{"id":3123,"date":"2023-10-07T10:05:47","date_gmt":"2023-10-07T02:05:47","guid":{"rendered":"https:\/\/maxtormetal.com\/?post_type=product&#038;p=3123"},"modified":"2026-06-17T23:39:13","modified_gmt":"2026-06-17T15:39:13","slug":"lames-de-cisaille-a-rouleaux","status":"publish","type":"product","link":"https:\/\/maxtormetal.com\/fr\/product\/roller-shearing-blades\/","title":{"rendered":"Lames de Cisaille Rotative pour M\u00e9tal"},"content":{"rendered":"<h2>Lames de cisaille \u00e0 rouleaux et couteaux circulaires de haute pr\u00e9cision<\/h2>\r\n<p>Chez Maxtor Metal, nous fabriquons des couteaux circulaires (slitter) et des lames de cisaille \u00e0 rouleaux pour les lignes de refendage haute vitesse et les cisailles de rives, o\u00f9 ils agissent comme des outils de coupe superpos\u00e9s. Gr\u00e2ce \u00e0 des mouvements rotatifs synchronis\u00e9s des lames sup\u00e9rieures et inf\u00e9rieures, ces outils r\u00e9alisent un refendage longitudinal continu et sans copeaux sur des bobines de m\u00e9tal lamin\u00e9 \u00e0 froid, \u00e0 chaud et en alliages sp\u00e9ciaux avanc\u00e9s. Con\u00e7us pour r\u00e9sister \u00e0 des charges dynamiques s\u00e9v\u00e8res, ces outils s'int\u00e8grent parfaitement aux environnements de traitement des m\u00e9taux les plus exigeants au monde.<\/p>\r\n<h3>1.1 Technical Specification Matrix<\/h3>\r\n<table width=\"878\">\r\n<tbody>\r\n<tr>\r\n<td width=\"198\">\r\n<p><strong>Parameter Class<\/strong><\/p>\r\n<\/td>\r\n<td width=\"680\">\r\n<p><strong>Technical Specification Details<\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"198\">\r\n<p><strong>Compatible Machinery<\/strong><\/p>\r\n<\/td>\r\n<td width=\"680\">\r\n<p>Deployed on global high-precision slitting lines and side trimmers including <strong>FIMI, SMS Group, Danieli, Andritz, Stamco, and Herr-Voss Stamco<\/strong>. Demands total compliance with rigid spindle systems requiring high dynamic balance and zero axial play.<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"198\">\r\n<p><strong>Material Base Options<\/strong><\/p>\r\n<\/td>\r\n<td width=\"680\">\r\n<p>Standard H13 (4Cr5MoSiV1); Modified Cr-Mo-W H13; Modified Cr-Mo-Ni H13; Modified Cr-Mo-V-Mo H13; W+Ni Composite Modified H13; Mo+W Composite Modified H13; DC53\/LD High-Vanadium Cold-Work Steel; Matrix Steels (Caldie \/ Viking); Performance Powder Metallurgy High-Speed Steels (ASP 23 \/ CPM M4 \/ Vanadis 4 Extra).<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"198\">\r\n<p><strong>Hardness Spectrum<\/strong><\/p>\r\n<\/td>\r\n<td width=\"680\">\r\n<p>* <strong>Standard\/Modified H13:<\/strong> HRC 54\u201357 (Heavy Mid-Thick Plates) \/ HRC 57\u201360 (Thin\/High-Frequency Lines)<\/p>\r\n<p>* <strong>DC53\/LD:<\/strong> HRC 60\u201362<\/p>\r\n<p>* <strong>Matrix Steel:<\/strong> HRC 59\u201361<\/p>\r\n<p>* <strong>Powder Metallurgy Steel (ASP 23):<\/strong> HRC 62\u201364.<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"198\">\r\n<p><strong>Dimensional Tolerances<\/strong><\/p>\r\n<\/td>\r\n<td width=\"680\">\r\n<p>* <strong>Thickness Tolerance:<\/strong> \u00b10.002 mm to \u00b10.005 mm (High-Precision Lines; distinct from standard \u00b10.01 mm commercial engineering blueprints\u2014see Section 4.3 for deep analysis)<\/p>\r\n<p>* <strong>Flatness &amp; Parallelism:<\/strong> &lt;0.003 mm to 0.005 mm<\/p>\r\n<p>* <strong>Axial Runout:<\/strong> \u22640.005 mm (prevents periodic gap fluctuation and severe burrs)<\/p>\r\n<p>* <strong>Unnoted Tolerances:<\/strong> Compliance with ISO 2768-mK standards.<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"198\">\r\n<p><strong>Surface Topography<\/strong><\/p>\r\n<\/td>\r\n<td width=\"680\">\r\n<p>* <strong>Cutting Edge &amp; Lateral Faces:<\/strong> Ra &lt;0.2\u03bcm to 0.4\u03bcm via ultra-precision grinding and mirror polishing .<\/p>\r\n<p>* <strong>Non-Working Surfaces:<\/strong> Ra &lt;1.6\u03bcm.<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"198\">\r\n<p><strong>Target Slitting Stock<\/strong><\/p>\r\n<\/td>\r\n<td width=\"680\">\r\n<p>Low-carbon cold-rolled coils, hot-rolled pickled plates, electrical silicon steel sheets, copper\/aluminum alloy strips, stainless steels, and Ultra-High-Strength Steels (UHSS, yield strength \u2265900 MPa, tensile strength up to \u22651200 MPa, such as automotive hot-stamped steel, martensitic steel, and DP1180).<\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h2>Pr\u00e9sentation technique des lames de cisaille \u00e0 rouleaux<\/h2>\r\n<h3>2.1 The Mechanics of &#8220;Shear-Heavy Compression&#8221;<\/h3>\r\n<p>Rotary slitting is not a simple separation process; it is a complex, continuous &#8220;shear-heavy compression&#8221; operation. As the metal coil passes through the overlapping upper and lower rotary blades, the material undergoes three distinct deformation phases:<\/p>\r\n<ol>\r\n<li><strong>Elastic Deformation:<\/strong> The initial contact where the knife edge indents the strip surface.<\/li>\r\n<li><strong>Plastic Shear:<\/strong> The blade penetrates deeper, forcing the material past its yield point along a localized shear plane.<\/li>\r\n<li><strong>Fracture Zone Initiation:<\/strong> Micro-cracks propagate from both the upper and lower knife tips until they meet, cleanly separating the material without chip generation.<\/li>\r\n<\/ol>\r\n<p>During high-speed operations, the tool is subjected to severe cyclic mechanical impacts coupled with intense friction along the blade flanks. This localized friction generates extreme instantaneous flash temperatures. If the blade material lacks sufficient thermal stability or hot hardness, the cutting edge quickly undergoes localized tempering, leading to plastic deformation, accelerated abrasive wear, and eventual micro-chipping.<\/p>\r\n<p>The peak shearing force per knife pair is calculated using the following empirical model:<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7790 size-full\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Maxtor-Metal-Circular-Slitter-Knife-Maximum-Cutting-Force-Formula.jpg\" alt=\"Maximum cutting force calculation formula: F_max = 0.7 * tensile strength (sigma_b) * thickness (t) * square root of blade diameter divided by two times cutting engagement (Delta).\" width=\"365\" height=\"119\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Maxtor-Metal-Circular-Slitter-Knife-Maximum-Cutting-Force-Formula.jpg 365w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Maxtor-Metal-Circular-Slitter-Knife-Maximum-Cutting-Force-Formula-300x98.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Maxtor-Metal-Circular-Slitter-Knife-Maximum-Cutting-Force-Formula-18x6.jpg 18w\" sizes=\"(max-width: 365px) 100vw, 365px\" \/><\/p>\r\n<p>Where:<\/p>\r\n<ul>\r\n<li>Fmax is the peak shearing force per knife pair.<\/li>\r\n<li>\u03c3b is the ultimate tensile strength of the strip material.<\/li>\r\n<li>t is the strip thickness.<\/li>\r\n<li>d is the blade outer diameter.<\/li>\r\n<li>\u0394 is the total cutting engagement (penetration depth).<\/li>\r\n<\/ul>\r\n<h3>2.2 Microstructural Wear Diagnostics<\/h3>\r\n<p>To ensure stable tool performance, the blade microstructure must resist three primary wear mechanisms:<\/p>\r\n<ul>\r\n<li><strong>Adhesive Wear (Galling):<\/strong> Occurs predominantly when slitting soft or highly ductile materials like stainless steel or aluminum. The high pressure causes localized micro-welding between the strip and the blade flank, tearing away small particles of the blade matrix during operation.<\/li>\r\n<li><strong>Abrasive Wear:<\/strong> Caused by hard micro-constituents (such as iron oxides on hot-rolled pickled bands or highly abrasive silicon carbide structures in electrical steels) plowing into the tool steel matrix. Resistance depends entirely on the volume fraction and uniform distribution of primary alloy carbides (M<sub>6<\/sub>C, MC, M<sub>23<\/sub>C<sub>6<\/sub>).<\/li>\r\n<li><strong>Thermal Fatigue (Heat Checking):<\/strong> Continuous thermal cycling between ambient and flash temperatures induces cyclic tensile and compressive stresses at the cutting edge, leading to microscopic networks of perpendicular thermal cracks.<\/li>\r\n<\/ul>\r\n<h2>Applications industrielles des lames de cisaille \u00e0 rouleaux<\/h2>\r\n<h3>3.1 Automotive UHSS Processing (DP980 \/ DP1180 Lines)<\/h3>\r\n<ul>\r\n<li><strong>Equipment Type:<\/strong> Heavy-duty, high-rigidity precision slitting lines featuring active anti-deflection locking arbors.<\/li>\r\n<li><strong>Work Material Profile:<\/strong> Dual-Phase (DP) steels, automotive hot-stamped boron steels, and martensitic steels with yield strengths ranging from 900 MPa to 1100 MPa.<\/li>\r\n<li><strong>Recommended Material Solution:<\/strong> High-Vanadium modified cold-work steel (DC53 \/ LD).<\/li>\r\n<li><strong>Engineered Clearances:<\/strong> Axial side clearance must be set to <strong>14% to 18% of the sheet thickness<\/strong>. Setting a standard clearance under-provisions the shear plane, causing an exponential spike in cutting force that can lead to catastrophic blade fracturing.<\/li>\r\n<li><strong>Operational Parameter Limit:<\/strong> Maximum slitting speed should be regulated to 80 m\/min to 120 m\/min to control mechanical shock and thermal loading on the refined grain boundaries.<\/li>\r\n<\/ul>\r\n<h3>3.2 High-Speed Electrical Silicon Steel Slitting<\/h3>\r\n<ul>\r\n<li><strong>Equipment Type:<\/strong> Ultra-precision, vibration-damped looping slitter lines running at high frequencies.<\/li>\r\n<li><strong>Work Material Profile:<\/strong> Non-oriented and grain-oriented electrical silicon steel sheets (0.20 mm to 0.50 mm thick) featuring highly abrasive silicon content.<\/li>\r\n<li><strong>Recommended Material Solution:<\/strong> Mo+W Composite Modified H13 or Performance Powder Metallurgy HSS (ASP 23).<\/li>\r\n<li><strong>Engineered Clearances:<\/strong> Axial side clearance strictly locked at <strong>8% to 10% of the strip thickness<\/strong>; radial overlap controlled precisely within <strong>2 mm to 0.4 mm<\/strong>.<\/li>\r\n<li><strong>Operational Parameter Limit:<\/strong> Slitting velocities up to 300 m\/min to 400 m\/min. Surface finishes must maintain Ra &lt;0.2\u03bcm with a mirror polish to eliminate micro-abrasion and minimize secondary iron dust generation.<\/li>\r\n<\/ul>\r\n<h3>3.3 Heavy-Gauge Hot-Rolled Pickled Coil Processing<\/h3>\r\n<ul>\r\n<li><strong>Equipment Type:<\/strong> Heavy-duty industrial slitter lines and side trimmers.<\/li>\r\n<li><strong>Work Material Profile:<\/strong> Hot-rolled pickled plate, carbon steel, and low-alloy structural steels with thicknesses \u22653 mm.<\/li>\r\n<li><strong>Recommended Material Solution:<\/strong> Standard H13 (4Cr5MoSiV1) or Cr-Mo-Ni Modified H13 for large diameters (&gt;400 mm).<\/li>\r\n<li><strong>Engineered Clearances:<\/strong> Axial side clearance set to <strong>10% to 12% of the plate thickness<\/strong>; radial overlap set between <strong>6 mm and 1.0 mm<\/strong> to ensure complete structural separation across heavy cross-sections.<\/li>\r\n<li><strong>Operational Parameter Limit:<\/strong> Designed for heavy-impact, low-speed processing ranges (30 m\/min to 60 m\/min). Relies on high base impact toughness to prevent macro-chipping under high-tonnage loads.<\/li>\r\n<\/ul>\r\n<h3>3.4 Stainless Steel Precision Strip Slitting (300\/400 Series)<\/h3>\r\n<ul>\r\n<li><strong>Equipment Type:<\/strong> High-precision slitting lines equipped with secondary tension control loops and non-marring separating tools.<\/li>\r\n<li><strong>Work Material Profile:<\/strong> Austenitic (e.g., SUS304\/316) and ferritic (e.g., SUS430) stainless steel precision strips with highly adhesive surface properties.<\/li>\r\n<li><strong>Recommended Material Solution:<\/strong> Cr-Mo-Ni Modified H13 or Matrix Steel (Caldie) combined with physical vapor deposition or special coatings.<\/li>\r\n<li><strong>Engineered Clearances:<\/strong> Side clearance set at <strong>9% to 11% of the material thickness<\/strong> to compensate for the high work-hardening rate of austenitic matrices.<\/li>\r\n<li><strong>Operational Parameter Limit:<\/strong> Operating speeds of 100 m\/min to 180 m\/min. Utilizing DLC or advanced surface treatments prevents cold-welding and adhesive material buildup on the blade face.<\/li>\r\n<\/ul>\r\n<h3>3.5 Ultra-Thin Non-Ferrous Foil Processing (Copper &amp; Aluminum)<\/h3>\r\n<ul>\r\n<li><strong>Equipment Type:<\/strong> Light-gauge precision foil slitters utilizing specialized micro-shim packs.<\/li>\r\n<li><strong>Work Material Profile:<\/strong> High-conductivity copper strips, transformer aluminum foils, and battery-grade current collector foils down to ultra-thin gauges.<\/li>\r\n<li><strong>Recommended Material Solution:<\/strong> High-performance Powder Metallurgy Steel (ASP 23) to achieve maximum structural homogeneity.<\/li>\r\n<li><strong>Engineered Clearances:<\/strong> Ultra-low side clearances ranging from <strong>6% to 8% of foil thickness<\/strong>; radial overlap minimized to <strong>15 mm to 0.25 mm<\/strong> to avoid material folding.<\/li>\r\n<li><strong>Operational Parameter Limit:<\/strong> Running speeds up to 500 m\/min. Requires a mirror finish (Ra \u22642\u03bcm) across both cutting flanks to eliminate localized drag and edge deformation.<\/li>\r\n<\/ul>\r\n<h3>3.6 Generic Light-Gauge Cold-Rolled Carbon Steel Centers<\/h3>\r\n<ul>\r\n<li><strong>Equipment Type:<\/strong> Standard commercial steel service center slitting equipment.<\/li>\r\n<li><strong>Work Material Profile:<\/strong> Cold-rolled commercial carbon steel coils (SPCC, SECC) with tensile strengths under 450 MPa and thicknesses between 0.5 mm and 2.0 mm.<\/li>\r\n<li><strong>Recommended Material Solution:<\/strong> Standard H13 (4Cr5MoSiV1) or Cr-Mo-V-Mo Modified H13.<\/li>\r\n<li><strong>Engineered Clearances:<\/strong> Standard side clearance fixed at <strong>10% of the material thickness<\/strong>; radial overlap maintained at a constant <strong>3 mm to 0.5 mm<\/strong>.<\/li>\r\n<li><strong>Operational Parameter Limit:<\/strong> Highly stable, continuous operation speeds up to 200m\/min, emphasizing extended maintenance intervals and straightforward regrinding profiles.<\/li>\r\n<\/ul>\r\n<h2>4.Probl\u00e8mes de D\u00e9faillance Courants et Solutions Techniques<\/h2>\r\n<h3>4.1 Catastrophic Structural Cracking or Large-Scale Chipping<\/h3>\r\n<ul>\r\n<li><strong>Root Cause Analysis:<\/strong> Using highly brittle, conventional cold-work tool steels (like D2 or SKD11) when slitting heavy-gauge plates (\u22653mm) or high-strength steels under severe locking loads. These traditional steels lack sufficient fracture toughness under heavy, combined shear and compression forces, leading to deep, catastrophic transgranular cleavage failures.<\/li>\r\n<li><strong>Solution d&#039;ing\u00e9nierie :<\/strong> Transition the blade base to standard H13 (4Cr5MoSiV1) or a specialized Cr-Mo-Ni modified H13 matrix. For high-strength applications up to 1500MPa, upgrade to low-carbon high-toughness matrix steel (Caldie\/Viking). This shift optimizes core impact energy absorption while maintaining a high structural yield point.<\/li>\r\n<li><strong>Engineering Trade-off:<\/strong> Increasing the base toughness usually requires reducing the volume of primary un-dissolved chromium carbides. This lowers the material&#8217;s absolute abrasive wear resistance, requiring more frequent, controlled maintenance grinding.<\/li>\r\n<\/ul>\r\n<h3>4.2 Rapid Edge Softening and Thermal Collapse (Mushrooming)<\/h3>\r\n<ul>\r\n<li><strong>Root Cause Analysis:<\/strong> Continuous, high-speed friction along the blade flanks generates localized heat that exceeds the material&#8217;s initial tempering temperature. This triggers a microstructural conversion from tempered martensite to over-tempered ferrite, lowering the edge hardness and causing the blade profile to deform or &#8220;mushroom&#8221;.<\/li>\r\n<li><strong>Solution d&#039;ing\u00e9nierie :<\/strong> Deploy Cr-Mo-W or Mo+W composite modified H13 alloys. The synchronized additions of Tungsten (W) and Molybdenum (Mo) precipitate secondary ultra-fine M<sub>6<\/sub>C and MC carbides during hot processing. These carbides remain highly stable at elevated temperatures, providing excellent hot hardness and thermal fatigue resistance.<\/li>\r\n<li><strong>Engineering Trade-off:<\/strong> The high concentration of refractory elements (W, Mo) increases the material&#8217;s sensitivity to grinding burn during resharpening, requiring highly controlled grinding feeds and specialized vitrified CBN wheels.<\/li>\r\n<\/ul>\r\n<h3>4.3 Strip Camber, Snaking, and Inconsistent Slit Widths<\/h3>\r\n<ul>\r\n<li><strong>Root Cause Analysis:<\/strong> Excessive cumulative thickness errors in the knife and spacer assembly, or severe axial runout (\u22650.005mm) along the slitter arbor. This causes the relative clearance between the upper and lower knives to oscillate dynamically during rotation, shifting the shear plane and inducing lateral wandering in the strip.<\/li>\r\n<li><strong>Solution d&#039;ing\u00e9nierie :<\/strong> Implement strict micro-metric manufacturing controls to guarantee thickness tolerances within \u00b10.002mm and keep the axial runout under \u22640.005mm. All tooling setups should utilize high-precision ground spacers and be assembled over high-rigidity spindles.<\/li>\r\n<li><strong>Engineering Trade-off:<\/strong> Achieving these tight tolerances requires temperature-controlled grinding rooms and comprehensive metrology verification, which increases initial tooling costs.<\/li>\r\n<li><strong>Engineering Note: The Operational Divide Between \u00b10.01 mm and \u00b10.002 mm Thickness Tolerances<\/strong>\r\n<p>In standard mechanical blueprints, a thickness tolerance of \u00b10.01 mm or wider is commonly specified. However, for the high-precision applications championed in this white paper, a micron-level tolerance of \u00b10.002 mm to \u00b10.005 mm is mandatory. The critical technical factors dictating this divide include:<\/p>\r\n<ul>\r\n<li><strong>Multi-Knife Setup &amp; Cumulative Error Effect<\/strong>: In basic slitting operations where only 2 to 5 cuts are performed per arbor, a single-knife tolerance of \u00b10.01 mm results in a negligible total cumulative error. However, in high-capacity, multi-knife precision lines (e.g., electrical silicon steel or ultra-thin electronic foils) requiring 20 to 50 cuts simultaneously, a \u00b10.01 mm tolerance compounds into a massive cumulative axial drift of \u00b10.2 mm to \u00b10.5 mm. This severely misaligns the downstream knives relative to the arbor centerline, making ultra-precise setups impossible.<\/li>\r\n<li><strong>Tooling Setup Dynamics: Manual Shimming vs. Automated Blind-Assembly:<\/strong> Conventional industrial lines operating with \u00b10.01 mm knives heavily rely on skilled operators to manually measure and compensate for gaps using ultra-thin copper shims (typically 0.01 mm to 0.05 mm thick) during setup. Conversely, high-automation, world-class slitting lines (such as those from FIMI, SMS Group, or Danieli) require &#8220;blind-assembly&#8221;\u2014where knives and precision spacers are stacked sequentially onto the arbor and locked mechanically based on pure computational data, with zero manual shimming allowed. This operational paradigm mandates a strict \u00b10.002 mm manufacturing tolerance.<\/li>\r\n<li><strong>Gauge-Specific Clearance Sensitivity: <\/strong>The optimal axial side clearance is usually engineered at 8% to 12% of the work material thickness. For heavy-gauge plates (\u22653 mm), the nominal clearance spans hundreds of microns, rendering a \u00b10.01 mm knife thickness variation statistically insignificant. However, when slitting ultra-thin foils or electrical steels (\u22640.1 mm), the ideal side clearance drops to approximately 0.01 mm. Under these extreme bounds, a \u00b10.01 mm knife tolerance will either close the gap to zero (causing immediate blade collision and edge chipping) or double it (causing severe vertical burrs and material deformation).<\/li>\r\n<li><strong> Manufacturing Feasibility &amp; Asset Lifecycle TCO: <\/strong>Producing a knife with a \u00b10.01 mm tolerance requires only standard precision surface grinding. Achieving a reliable \u00b10.002 mm tolerance requires climate-controlled grinding facilities (to eliminate thermal expansion drift), deep cryogenic treatment (to stabilize the microstructure against residual stress warping), and sequential mirror lapping. While ultra-precision tooling demands a higher initial capital expenditure, it eliminates manual shimming downtime, protects high-cost arbor bearings from dynamic axial imbalances, and delivers a substantially lower Total Cost of Ownership (TCO) in high-throughput lines. For teams commissioning or auditing a new knife stack, the <strong><a class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/maxtormetal.com\/fr\/oem-slitter-knife-blueprint-spindle-fit-audit-checklist\/\" target=\"_blank\" rel=\"noopener\"><em>OEM Slitter Knife Spindle Fit Audit Checklist<\/em><\/a><\/strong> provides a structured workflow for verifying ISO bore fits, TIR gates, and spacer parallelism before the tooling touches coil.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3>4.4 Excessive Secondary Burr Formation on Strip Edges<\/h3>\r\n<ul>\r\n<li><strong>Root Cause Analysis:<\/strong> The horizontal clearance between the upper and lower blades has widened beyond the optimal material deformation limits, or the blade edges have undergone micro-chipping. This forces the material to undergo tearing and tensile failure rather than clean shearing, leaving thick, vertical burrs along the bottom edge of the strip.<\/li>\r\n<li><strong>Solution d&#039;ing\u00e9nierie :<\/strong> Readjust the horizontal clearance to match the specific material criteria (e.g., 8%\u201312% for soft carbon steels, 14%\u201318% for high-strength steels). If the burrs are caused by micro-abrasion of the blade edge, upgrade to an atomized Powder Metallurgy steel (ASP 23) to ensure a highly uniform carbide structure at the micron level.<\/li>\r\n<li><strong>Engineering Trade-off:<\/strong> Setting tighter clearance profiles demands exceptional machine stiffness and precise operator alignment, as any deflection can cause the blades to rub, accelerating tool wear.<\/li>\r\n<\/ul>\r\n<h3>4.5 Micro-Crack Propagation from Flank Wear (Heat Checking)<\/h3>\r\n<ul>\r\n<li><strong>Root Cause Analysis:<\/strong> Repeated thermal shocks where the blade edge heats up rapidly in the cut and cools outside the cut create cyclic thermal stresses. This leads to the formation of micro-cracks perpendicular to the cutting edge, which can grow into large chips over time.<\/li>\r\n<li><strong>Solution d&#039;ing\u00e9nierie :<\/strong> Utilize a Cr-Mo-V-Mo modified H13 steel with elevated Molybdenum content to enhance tempering stability and refine grain structures. Additionally, integrate deep cryogenic treatment down to -196\u2103 post-quenching to relieve residual micro-stresses and prevent sub-surface crack initiation.<\/li>\r\n<li><strong>Engineering Trade-off:<\/strong> The added thermal fatigue resistance slightly lowers the maximum achievable room-temperature hardness, reducing the tool&#8217;s effectiveness when slitting highly abrasive surfaces.<\/li>\r\n<\/ul>\r\n<h3>4.6 Edge Galling and Material Pickup when Slitting Aluminum\/Stainless<\/h3>\r\n<ul>\r\n<li><strong>Root Cause Analysis:<\/strong> Severe adhesive wear forces soft, ductile materials to cold-weld onto the unprotected carbon steel matrix of the knife flank. As the strip moves past, these adhered fragments break free, pulling tiny chunks of the tool steel matrix with them and scratching the slitted product.<\/li>\r\n<li><strong>Solution d&#039;ing\u00e9nierie :<\/strong> Apply an ultra-smooth Diamond-Like Carbon (DLC) coating or a thin chromium-nitride layer to the blade flanks. Ensure the cutting edge and faces are mirror-polished to a surface finish of Ra &lt;0.2\u03bcm to minimize physical mechanical locking points.<\/li>\r\n<li><strong>Engineering Trade-off:<\/strong> Thin, hard coatings like DLC are susceptible to peeling if the underlying steel matrix deforms under heavy impact, meaning they can only be applied to highly rigid base materials.<\/li>\r\n<\/ul>\r\n<h2>5.Guide d'Ing\u00e9nierie des Mat\u00e9riaux<\/h2>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7793 size-full aligncenter\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Toughness-vs.-Wear-Resistance-Spectrum1.jpg\" alt=\"Maxtor Metal rotary slitter knife material selection guide \u2014 toughness-to-wear-resistance spectrum: Standard H13 (heavy plates, high impact toughness) \u2192 Matrix Steel (high impact) \u2192 DC53 (UHSS applications) \u2192 Powder Metallurgy ASP 23 (ultimate wear resistance for silicon steel and high-speed lines)\" width=\"1000\" height=\"175\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Toughness-vs.-Wear-Resistance-Spectrum1.jpg 1000w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Toughness-vs.-Wear-Resistance-Spectrum1-300x53.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Toughness-vs.-Wear-Resistance-Spectrum1-768x134.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Toughness-vs.-Wear-Resistance-Spectrum1-18x3.jpg 18w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Toughness-vs.-Wear-Resistance-Spectrum1-600x105.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\r\n<p>The performance of a rotary slitter knife depends heavily on its underlying alloy chemistry and carbide morphology. Standard cold-work steels like D2 and SKD11 feature large, coarse primary chromium eutectic carbides (M<sub>7<\/sub>C<sub>3<\/sub>). Under the high cyclic compression loads of modern slitting lines, these large carbides act as structural stress concentrators, often leading to catastrophic edge chipping or sudden cracking. To address these challenges, advanced tool steels utilize tailored alloying strategies:<\/p>\r\n<h3>5.1 Standard H13 (4Cr5MoSiV1)<\/h3>\r\n<p>A medium-carbon, high-chromium hot-work steel featuring an exceptionally tough, dislocation-tempered martensitic matrix. It relies on a balanced Cr-Mo-V composition to deliver excellent impact energy absorption and resistance to thermal shock, making it an ideal choice for heavy-gauge hot-rolled processing lines. However, its lower volume fraction of primary hard carbides limits its long-term resistance to abrasive wear.<\/p>\r\n<p>5.2 Modified H13 Variants (Co-Alloying Schemes)<\/p>\r\n<ul>\r\n<li><strong>Cr-Mo-W System (+W):<\/strong> Micro-additions of Tungsten form highly stable, hard M<sub>6<\/sub>C complex carbides. This modification significantly boosts secondary hardening peaks, hot hardness, and edge retention without sacrificing base impact toughness, making it well-suited for high-frequency silicon steel slitting.<\/li>\r\n<li><strong>Cr-Mo-Ni System (+Ni):<\/strong> Nickel additions strengthen the martensitic matrix through solid solution strengthening, lowering the ductile-to-brittle transition temperature and improving transverse mechanical properties. This modification helps prevent catastrophic axial cracking in large-diameter tools (&gt;400mm) subjected to high lateral clamping forces.<\/li>\r\n<li><strong>Cr-Mo-V-Mo System (High Mo):<\/strong> Increasing the Molybdenum ratio improves grain refinement and significantly enhances tempering resistance. This structure resists thermal softening and micro-crack propagation under continuous, high-speed friction.<\/li>\r\n<li><strong>W+Ni Composite System:<\/strong> Combines the high-hardness precipitation of Tungsten carbides with the matrix-strengthening properties of Nickel. This dual approach creates an excellent balance of deformation resistance and toughness, ideal for slitting uneven or warped metal strips.<\/li>\r\n<li><strong>Mo+W Composite System:<\/strong> Leverages a balanced combination of Molybdenum and Tungsten to maximize thermal stability and grain refinement. This composition provides excellent hot hardness and thermal fatigue resistance during the high-speed slitting of ultra-thin electrical steels.<\/li>\r\n<\/ul>\r\n<h3>5.3 DC53 \/ LD (High-Vanadium Modified Cold-Work Steel)<\/h3>\r\n<p>An advanced cold-work steel developed to overcome the toughness limitations of standard SKD11\/D2 alloys. By increasing the Vanadium (V) content, it forms fine, evenly dispersed MC-type vanadium carbides that refine the grain structure. At an operating hardness of HRC 60\u201362, DC53 provides twice the impact toughness of SKD11, substantially reducing the risk of edge chipping when processing high-strength automotive sheets up to 1100MPa.<\/p>\r\n<h3>5.4 Matrix Steels (Caldie \/ Viking)<\/h3>\r\n<p>Engineered with a low-carbon, high-alloy matrix formula that minimizes the formation of large, brittle eutectic carbides during solidification. These steels combine the high matrix hardness of a high-speed steel (HRC 59\u201361) with the excellent impact ductility of an H13 hot-work alloy. This makes them highly effective at resisting fatigue cracking and structural failure under severe mechanical loads (1100MPa to 1500MPa).<\/p>\r\n<h3>5.5 Powder Metallurgy High-Speed Steels (ASP 23 \/ CPM M4)<\/h3>\r\n<p>Produced via gas atomization and Hot Isostatic Pressing (HIP), this process bypasses conventional ingot casting to eliminate carbide segregation. The resulting microstructure consists of an ultra-fine, highly uniform dispersion of sub-micron vanadium and tungsten carbides embedded within a high-alloy matrix. Operating at HRC 62\u201364, these materials offer an excellent combination of abrasive wear resistance, compressive strength, and toughness. For high-demand, automated slitting lines, PM steels can extend tool life by 5 to 10 times compared to standard H13 alloys.<\/p>\r\n<h2>6.Traitement Thermique et \u00c9quilibre de Duret\u00e9<\/h2>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7794 size-full aligncenter\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Vacuum-Heat-Treatment-Thermal-Cycle-Profile1.jpg\" alt=\"Figure 1: Maxtor Metal R&amp;D Lab - Vacuum Thermal Hardening &amp; Deep Cryogenic Cycle Profile (-196\u00b0C )\" width=\"1000\" height=\"425\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Vacuum-Heat-Treatment-Thermal-Cycle-Profile1.jpg 1000w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Vacuum-Heat-Treatment-Thermal-Cycle-Profile1-300x128.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Vacuum-Heat-Treatment-Thermal-Cycle-Profile1-768x326.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Vacuum-Heat-Treatment-Thermal-Cycle-Profile1-18x8.jpg 18w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Vacuum-Heat-Treatment-Thermal-Cycle-Profile1-600x255.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\r\n<h3>6.1 Vacuum Thermal Hardening and Tempering Operations<\/h3>\r\n<p>Achieving the proper balance between wear resistance and structural toughness requires precise control over the heat treatment process. Maxtor Metal&#8217;s standard thermal hardening cycle for high-alloy rotary slitter knives includes:<\/p>\r\n<ol>\r\n<li><strong>Double Stage Pre-heating:<\/strong> Blades are heated slowly to 550\u2103 and then to 850\u2103 inside a high-vacuum furnace (10<sup>-4<\/sup> mbar). This minimizes thermal stress gradients and prevents distortion across the blade&#8217;s geometry.<\/li>\r\n<li><strong>High-Temperature Austenitizing:<\/strong> The temperature is raised to the material&#8217;s specific austenitizing range (typically 1020\u2103 to 1050\u2103 for modified H13 alloys; up to 1180\u2103 for PM variants) to dissolve alloy elements into the parent austenite matrix while preserving refined grain boundaries.<\/li>\r\n<li><strong>Controlled Gas Quenching:<\/strong> High-pressure nitrogen gas (4 bar to 10 bar) is forced through the chamber to quench the blades rapidly, transforming the austenite into a hard, un-tempered martensitic structure.<\/li>\r\n<li><strong>Triple Sub-Critical Tempering:<\/strong> To relieve internal quenching stresses and optimize toughness, the knives undergo at least three separate tempering cycles at temperatures ranging from 540\u2103 to 560^\u2103. This process triggers secondary hardening by precipitating fine alloy carbides and converts unstable retained austenite into stable tempered martensite.<\/li>\r\n<\/ol>\r\n<h3>6.2 Deep Cryogenic Treatment Mechanics<\/h3>\r\n<p>Deep cryogenic processing is highly recommended for high-performance slitting operations. Immediately following the initial gas quench, the blades are cooled gradually inside a specialized cryogenic chamber down to -196\u2103 and held at this temperature for 24 to 36 hours.<\/p>\r\n<ul>\r\n<li><strong>Complete Austenite Conversion:<\/strong> This process drives the transformation of remaining unstable retained austenite into hard martensite, eliminating structural weak points that can cause dimensional shifting or warping during operation.<\/li>\r\n<li><strong>Eta (\u03b7) Carbide Precipitation:<\/strong> Cryogenic conditioning creates micro-structural stresses that encourage the precipitation of ultra-fine, nano-scale eta-carbides during subsequent tempering stages. This significantly improves the tool&#8217;s micro-abrasive wear resistance and helps maintain a sharp cutting edge over extended production runs.<\/li>\r\n<\/ul>\r\n<h3>6.3 Duplex Plasma Nitriding Profiles<\/h3>\r\n<p>For challenging slitting applications, such as processing abrasive silicon steels or heavy-gauge carbon plates, the blades can undergo a duplex plasma nitriding treatment. Conducted in a vacuum chamber using an ionized hydrogen-nitrogen gas mixture at temperatures below the tempering point (480\u2103 to 500\u2103), this process introduces atomic nitrogen into the steel&#8217;s surface lattice.<\/p>\r\n<ul>\r\n<li><strong>Case Depth Control:<\/strong> Creates a highly controlled diffusion zone with a depth of <strong>05 mm to 0.10 mm<\/strong>.<\/li>\r\n<li><strong>Surface-to-Core Hardness Gradient:<\/strong> The process yields a hard surface shell rated at <strong>HV 900\u20131100<\/strong>, while the core maintains its high toughness and impact resistance (HRC 54\u201357). This design successfully addresses the engineering challenge of combining high external wear resistance with high internal impact absorption.<\/li>\r\n<\/ul>\r\n<h2>7.G\u00e9om\u00e9trie de la Lame et Ing\u00e9nierie du Tranchant<\/h2>\r\n<p>The precision of a rotary slitting operation depends directly on maintaining correct geometric clearances and edge configurations:<\/p>\r\n<h3>7.1 Axial Side Clearance (\u0394x)<\/h3>\r\n<p>The horizontal gap between the upper and lower shearing edges is a critical parameter.<\/p>\r\n<ul>\r\n<li><strong>Standard Gauge Steels:<\/strong> Set between <strong>8% and 12% of the material thickness<\/strong>. If the clearance is too small, the upper and lower fracture lines will pass each other, causing secondary shearing, high material friction, and fast edge wear. If the gap is too large, the material will undergo tensile tearing, leaving thick, heavy burrs.<\/li>\r\n<li><strong>Ultra-High-Strength Steels (UHSS):<\/strong> The side clearance must be increased to <strong>14% to 18% of the sheet thickness<\/strong>. Because high-strength materials resist plastic deformation, a wider clearance is needed to let the shear cracks propagate naturally, preventing extreme force spikes that could crack or chip the blade.<\/li>\r\n<\/ul>\r\n<h3>7.2 Radial Overlap (h<sub>o<\/sub>)<\/h3>\r\n<p>The vertical engagement depth of the upper and lower blades is adjusted based on the material thickness and strength.<\/p>\r\n<ul>\r\n<li><strong>Thin Strip Materials (&lt;0.5mm):<\/strong> Typically requires a small positive overlap (<strong>2 mm to 0.4 mm<\/strong>) to ensure complete separation across the entire width of the cut.<\/li>\r\n<li><strong>Heavy-Gauge Plates (\u22653mm):<\/strong> The vertical overlap can be expanded up to <strong>0 mm<\/strong> to ensure reliable material separation. This requires a highly rigid spindle system to prevent the knives from deflecting or backing off under load.<\/li>\r\n<\/ul>\r\n<h3>7.3 Edge Profiling and Micro-Beveling<\/h3>\r\n<p>Standard sharp, 90\u00b0square edges are prone to micro-chipping when subjected to high impact forces. To prevent this, Maxtor Metal uses specialized edge conditioning:<\/p>\r\n<ul>\r\n<li><strong>Micro-Honing:<\/strong> The sharp edge is lightly honed using fine diamond media to create a uniform radius of 5\u03bcm to 15\u03bcm. This provides extra support to the cutting edge, reducing localized stress concentrations without increasing burr formation.<\/li>\r\n<li><strong>Flank Micro-Beveling (45\u00b0Protective Chamfer):<\/strong> For heavy-duty slitting operations, a tiny 0.05mm*45\u00b0protective chamfer is ground onto the cutting corner. This redirecting feature helps absorb high impact forces and prevents edge chipping caused by material variations or line vibrations.<\/li>\r\n<\/ul>\r\n<h2>8.Processus de Fabrication et Inspection de la Qualit\u00e9<\/h2>\r\n<p>Every rotary slitter knife is manufactured through a precise sequence of operations to ensure exceptional dimensional accuracy and structural integrity:<\/p>\r\n<h3>8.1 Material Forging<\/h3>\r\n<ul>\r\n<li><strong>Multi-Directional Forging:<\/strong> Ingots are forged using high-tonnage hydraulic presses across three dimensions, achieving a minimum forging reduction ratio of 5:1. This collapses dendritic structures and refines grain distributions.<\/li>\r\n<\/ul>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7791 size-full\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Multi-Directional-Forging1.jpg\" alt=\"Multi-Directional Forging(1)\" width=\"810\" height=\"793\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Multi-Directional-Forging1.jpg 810w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Multi-Directional-Forging1-300x294.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Multi-Directional-Forging1-768x752.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Multi-Directional-Forging1-12x12.jpg 12w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Multi-Directional-Forging1-600x587.jpg 600w\" sizes=\"(max-width: 810px) 100vw, 810px\" \/><\/p>\r\n<h3>8.2 Rough Machining &amp; Stress Relieving<\/h3>\r\n<ul>\r\n<li><strong>CNC Turning:<\/strong> Forged blanks are rough-turned to within +1.5mm of final dimensions, and center bores are pre-machined.<\/li>\r\n<li><strong>Stress-Relief Annealing:<\/strong> To eliminate residual stresses induced by forging and heavy machining, parts are heated to 650\u2103, held for 4 hours, and slowly cooled in the furnace. This ensures excellent dimensional stability during subsequent heat treatment.<\/li>\r\n<\/ul>\r\n<h3>8.3 Heat Treatment &amp; Cryogenic Processing (<em>refer to Section 6 for full cycle details<\/em>)<\/h3>\r\n<ul>\r\n<li>Blanks undergo vacuum gas hardening and deep cryogenic cycling down to -196\u2103, as detailed in Section 6. This achieves the target hardness profile while minimizing internal material stresses.<\/li>\r\n<\/ul>\r\n<h3>8.4 Precision Grinding &amp; Metrology Verification<\/h3>\r\n<ul>\r\n<li><strong>Rotary Surface Grinding:<\/strong> Blade faces are ground on high-precision rotary grinders equipped with hydrostatic spindles and automated thermal compensation systems.<\/li>\r\n<li><strong>Bore Grinding:<\/strong> The internal center bore is ground to tight tolerances (typically H5, +0.011 \/ -0mm) to ensure a precise slip-fit onto the slitter arbor, minimizing radial play.<\/li>\r\n<li><strong>Dual-Face Mirror Lapping:<\/strong> Working flanks undergo a sequential lapping process using diamond slurries to achieve a surface roughness of Ra &lt;0.2\u03bcm. This eliminates grinding marks and provides a mirror finish that reduces friction and prevents material adhesion.<\/li>\r\n<\/ul>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7792 size-full aligncenter\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Precision-Metrology-Inspection-Setup1.jpg\" alt=\"Maxtor Metal precision metrology inspection setup for rotary slitter knives \u2014 laser interferometer workflow for flatness and parallelism verification (&lt; 0.003 mm), and digital runout indicator workflow for axial runout stability testing (\u2264 0.005 mm)\" width=\"1000\" height=\"425\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Precision-Metrology-Inspection-Setup1.jpg 1000w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Precision-Metrology-Inspection-Setup1-300x128.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Precision-Metrology-Inspection-Setup1-768x326.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Precision-Metrology-Inspection-Setup1-18x8.jpg 18w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Precision-Metrology-Inspection-Setup1-600x255.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\r\n<h3>8.5 Final Quality Inspection Protocols<\/h3>\r\n<ul>\r\n<li><strong>Dimensional Inspection:<\/strong> Thickness and parallelism are verified inside a climate-controlled metrology room (20\u2103\u00b15\u2103) using laser interferometers and high-precision digital indicators. Parallelism must measure under 0.003mm to ensure uniform cutting clearance.<\/li>\r\n<li><strong>Axial Runout Testing:<\/strong> The finished knife is mounted on a certified reference mandrel and rotated under a high-resolution digital gauge to verify that axial runout remains \u22640.005mm.<\/li>\r\n<li><strong>Non-Destructive Testing (NDT):<\/strong> Every blade undergoes Magnetic Particle Inspection (MPI) or Liquid Penetrant Testing (LPI) across the cutting edges to confirm the total absence of micro-cracks or grinding burns.<\/li>\r\n<\/ul>\r\n<h2>9. \u00c9tudes de Cas<\/h2>\r\n<h3>Case Study 1: Resolving Edge Failure in an Automotive UHSS Slitting Line<\/h3>\r\n<p><em>The following data comes from Maxtor Metal&#8217;s project support for automotive steel service center, the customer name has been anonymized.<\/em><\/p>\r\n<ul>\r\n<li><strong>Customer Profile:<\/strong> A major tier-1 automotive steel service center processing advanced high-strength steels.<\/li>\r\n<li><strong>The Challenge:<\/strong> The facility was using conventional D2\/SKD11 rotary knives to slit 1.6mm thick DP1180 high-strength steel coils. The blades suffered from frequent, unpredictable micro-chipping and large-scale fracturing along the cutting edges. This required the line to be shut down for knife changes every 12,000 meters of production, resulting in low equipment efficiency and high maintenance costs.<\/li>\r\n<li><strong>Engineering Intervention:<\/strong> Maxtor Metal\u2019s application engineering analyzed the application and replaced the brittle D2 knives with <strong>DC53 High-Vanadium cold-work steel<\/strong> blades heat-treated to HRC 60\u201362. The new setup included deep cryogenic treatment to eliminate internal material stresses. Additionally, the horizontal cutting clearance was increased from a standard 10% up to <strong>16% of the sheet thickness<\/strong> to accommodate the material&#8217;s high yield strength.<\/li>\r\n<li><strong>Quantifiable Results:<\/strong>\r\n<ul>\r\n<li><strong>Tool Life Extension:<\/strong> Single-line slitting distance increased from 12,000 meters to over <strong>2<\/strong><strong>5,000 meters<\/strong> before requiring a regrind.<\/li>\r\n<li><strong>Chipping Reduction:<\/strong> Catastrophic blade cracking was completely eliminated.<\/li>\r\n<li><strong>\u00c9conomies de co\u00fbts :<\/strong> Reduced annual tooling costs by 52% and decreased weekly downtime hours by 78%. <em>(The reduction in catastrophic chipping events eliminated unplanned line stoppages, which accounted for the disproportionate reduction in downtime relative to knife life extension.)<\/em><\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3>Case Study 2: Eliminating Edge Softening and Burr Issues in Silicon Steel Slitting<\/h3>\r\n<p><em>The following data comes from Maxtor Metal&#8217;s project support for a motor laminations manufacturer, the customer name has been anonymized.<\/em><\/p>\r\n<ul>\r\n<li><strong>Customer Profile:<\/strong> A manufacturer of high-efficiency electrical transformers and electric vehicle motor laminations.<\/li>\r\n<li><strong>The Challenge:<\/strong> The plant was slitting ultra-thin, highly abrasive 0.35mm grain-oriented electrical silicon steel coils at a high speed of 250m\/min. They used standard H13 tool steel blades, which suffered from rapid thermal softening and edge wear due to the high friction heat generated during operation. This led to excessive edge burrs (&gt;0.05mm), causing the slitted strips to fail insulation tests.<\/li>\r\n<li><strong>Engineering Intervention:<\/strong> Maxtor Metal implemented a <strong>Mo+W Composite Modified H13<\/strong> tool steel solution, hardened to HRC 58\u201360. The blades underwent an advanced vacuum heat treatment process followed by a <strong>08 mm deep plasma nitriding<\/strong> cycle to create a hard surface shell (HV 1000) over a tough core. The blade faces were also mirror-polished to a surface finish of Ra 0.15\u03bcm to minimize friction.<\/li>\r\n<li><strong>Quantifiable Results:<\/strong>\r\n<ul>\r\n<li><strong>Qualit\u00e9 des bords :<\/strong> Edge burrs were maintained consistently under <strong>015 mm<\/strong>, passing all quality checks.<\/li>\r\n<li><strong>Regrind Intervals:<\/strong> The continuous production volume between blade regrinds extended from 35,000 meters to <strong>210,000 meters<\/strong>. <em>(The extended interval reflects the particularly aggressive abrasive wear mode of silicon steel, where surface treatment and alloy selection have a compounding effect on tool life.)<\/em><\/li>\r\n<li><strong>Dust Reduction:<\/strong> Highly polished blade flanks minimized friction, significantly reducing airborne iron dust along the slitting line.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h2>Foire aux questions (FAQ)\u00a0<\/h2>\r\n<h3>Question: Pourquoi devrions-nous utiliser des aciers \u00e0 outils H13 modifi\u00e9s plut\u00f4t que les aciers conventionnels D2\/SKD11 pour le refendage de m\u00e9taux lourds ?<\/h3>\r\n<p><strong>A1 :<\/strong> Les aciers conventionnels D2\/SKD11 pr\u00e9sentent des carbures de chrome (M<sub>7<\/sub>C<sub>3<\/sub>7C3) larges et fragiles dans leur microstructure. Lorsqu'ils sont soumis aux forces de compression et d'impact cycliques \u00e9lev\u00e9es des lignes de refendage modernes, ces grands carbures agissent comme des concentrateurs de contraintes, provoquant souvent des fissures soudaines sur le tranchant ou une d\u00e9faillance catastrophique de la lame. Les aciers H13 modifi\u00e9s utilisent une matrice martensitique plus tenace et uniforme qui r\u00e9siste \u00e0 la fissuration sous de lourdes charges, ce qui en fait un choix beaucoup plus fiable pour les applications exigeantes.<\/p>\r\n<h3>Question: Comment une micro-addition de tungst\u00e8ne (W) am\u00e9liore-t-elle les performances des couteaux de refendage H13 ?<\/h3>\r\n<p><strong>A2:<\/strong> Lors du traitement thermique, le tungst\u00e8ne se combine au carbone pour former des carbures fins et durs de type M<sub>6<\/sub>6C. Ces micro-carbures augmentent la r\u00e9ponse au durcissement secondaire du mat\u00e9riau et maintiennent une duret\u00e9 \u00e9lev\u00e9e \u00e0 haute temp\u00e9rature, emp\u00eachant le tranchant de s'amollir en raison de la chaleur de friction lors du refendage \u00e0 haute vitesse.<\/p>\r\n<h3>Question: Quel r\u00f4le joue le nickel (Ni) dans les lames de cisaille \u00e0 rouleaux de grand diam\u00e8tre ?<\/h3>\r\n<p><strong>A3:<\/strong> Le nickel renforce la matrice d'acier par durcissement en solution solide, ce qui am\u00e9liore la t\u00e9nacit\u00e9 aux chocs \u00e0 basse temp\u00e9rature et les propri\u00e9t\u00e9s m\u00e9caniques transversales. Pour les lames de grand diam\u00e8tre (&gt;400 mm), cette t\u00e9nacit\u00e9 suppl\u00e9mentaire emp\u00eache l'outil de se fissurer axialement sous des forces de serrage lat\u00e9ral \u00e9lev\u00e9es.<\/p>\r\n<h3>Question: Quand est-il n\u00e9cessaire de passer \u00e0 des aciers issus de la m\u00e9tallurgie des poudres (PM) haute performance comme l'ASP 23 ?<\/h3>\r\n<p><strong>A4:<\/strong> Les aciers PM sont fortement recommand\u00e9s pour les lignes de refendage automatis\u00e9es \u00e0 haut volume ou lors du traitement de mat\u00e9riaux fins et abrasifs tels que les aciers \u00e9lectriques au silicium, o\u00f9 la qualit\u00e9 du bord est critique. Le proc\u00e9d\u00e9 de m\u00e9tallurgie des poudres \u00e9limine la s\u00e9gr\u00e9gation des carbures, cr\u00e9ant une structure exceptionnellement uniforme qui pr\u00e9vient les micro-\u00e9br\u00e9chures et prolonge la dur\u00e9e de vie de l'outil de 5 \u00e0 10 fois par rapport aux aciers conventionnels.<\/p>\r\n<h3>Question: Quelle est la cause principale des bords ondul\u00e9s ou en forme de serpent sur une bande refendue ?<\/h3>\r\n<p><strong>A5:<\/strong> Les bords ondul\u00e9s sont g\u00e9n\u00e9ralement caus\u00e9s par un jeu de coupe instable pendant le fonctionnement, souvent d\u00fb \u00e0 un faux-rond axial (runout) sup\u00e9rieur \u00e0 \u22640,005 mm ou \u00e0 des variations d'\u00e9paisseur cumul\u00e9es dans l'assemblage des lames et des entretoises. Cela permet aux couteaux d'osciller l\u00e9g\u00e8rement pendant leur rotation, ce qui fait varier dynamiquement le jeu horizontal et fait d\u00e9vier la coupe.<\/p>\r\n<h3>Question: Comment les variations de tol\u00e9rances d'\u00e9paisseur affectent-elles une configuration de refendage multi-lames ?<\/h3>\r\n<p><strong>A6:<\/strong> Sur un arbre de refendage \u00e9quip\u00e9 de plusieurs lames et entretoises, les erreurs d'\u00e9paisseur individuelles s'accumulent sur l'ensemble de l'assemblage. Si les tol\u00e9rances des lames individuelles ne sont pas maintenues entre \u00b10,002 mm et \u00b10,005 mm, l'erreur totale accumul\u00e9e d\u00e9salignera les couteaux sup\u00e9rieurs et inf\u00e9rieurs, entra\u00eenant des jeux de coupe irr\u00e9guliers, une mauvaise qualit\u00e9 de chant et une usure pr\u00e9matur\u00e9e des outils.<\/p>\r\n<h3>Question: Pourquoi les aciers automobiles \u00e0 ultra-haute r\u00e9sistance n\u00e9cessitent-ils des jeux de coupe horizontaux plus larges ?<\/h3>\r\n<p><strong>A7:<\/strong> Les mat\u00e9riaux \u00e0 haute r\u00e9sistance poss\u00e8dent des limites d'\u00e9lasticit\u00e9 \u00e9lev\u00e9es et une faible ductilit\u00e9. Si vous utilisez un jeu standard de 10 %, le mat\u00e9riau ne se fracturera pas proprement, provoquant un pic massif de force de coupe qui peut rapidement \u00e9mousser ou \u00e9br\u00e9cher la lame. Augmenter le jeu \u00e0 14 %\u201318 % permet aux fissures de cisaillement de se rejoindre naturellement, assurant une s\u00e9paration nette avec moins de contrainte sur l'outil.<\/p>\r\n<h3>Question: Quels sont les avantages du traitement cryog\u00e9nique profond \u00e0 -196\u00b0C pour les couteaux circulaires ?<\/h3>\r\n<p><strong>A8:<\/strong> Le traitement cryog\u00e9nique transforme l'aust\u00e9nite r\u00e9siduelle instable restante en martensite revenue stable et favorise la pr\u00e9cipitation d'eta-carbures ultrafins. Cela am\u00e9liore la stabilit\u00e9 dimensionnelle de l'outil, soulage les contraintes internes et garantit que le jeu de coupe ne d\u00e9rive pas lors de longues s\u00e9ries de production \u00e0 haute vitesse.<\/p>\r\n<h3>Question: Quel est le but de la nitruration plasma sur une lame de refendage, et cela rend-il l'outil cassant ?<\/h3>\r\n<p><strong>A9:<\/strong> La nitruration plasma diffuse de l'azote dans la surface de la lame pour cr\u00e9er une couche externe dure et r\u00e9sistante \u00e0 l'usure (0,05\u20130,10 mm de profondeur, HV 900\u20131100) tout en gardant le c\u0153ur tenace et r\u00e9sistant aux chocs. Comme la couche nitrur\u00e9e est mince et soutenue par un c\u0153ur robuste, elle am\u00e9liore consid\u00e9rablement la r\u00e9sistance \u00e0 l'usure sans rendre toute la lame cassante.<\/p>\r\n<h3>Question: Comment une face lat\u00e9rale polie miroir (Ra &lt; 0,2 \u00b5m) am\u00e9liore-t-elle les performances de coupe ?<\/h3>\r\n<p><strong>A10:<\/strong> Un fini miroir \u00e9limine les micro-traces de meulage o\u00f9 les fissures peuvent commencer, minimise la friction contre la bande en mouvement et aide \u00e0 emp\u00eacher les m\u00e9taux mous de coller \u00e0 l'outil. Il r\u00e9duit \u00e9galement la tra\u00een\u00e9e de friction et limite l'accumulation de poussi\u00e8re de fer le long de la ligne.<\/p>\r\n<h3>Question: Les rev\u00eatements DLC (Diamond-Like Carbon) peuvent-ils \u00eatre utilis\u00e9s pour le refendage d'aciers \u00e0 haute r\u00e9sistance ?<\/h3>\r\n<p><strong>A11:<\/strong> En g\u00e9n\u00e9ral, non. Bien que les rev\u00eatements DLC offrent un coefficient de frottement exceptionnellement bas, ils sont tr\u00e8s fins et rigides. Sous les forces de compression extr\u00eames requises pour refendre des aciers \u00e0 haute r\u00e9sistance, la matrice d'acier sous-jacente peut fl\u00e9chir l\u00e9g\u00e8rement, provoquant la fissuration et l'\u00e9caillage du rev\u00eatement DLC fragile. Le DLC est mieux adapt\u00e9 aux mat\u00e9riaux mous et collants comme l'aluminium ou le cuivre.<\/p>\r\n<h3>Question: Quel est le chevauchement radial vertical id\u00e9al pour le refendage de t\u00f4les en acier au carbone moyen ?<\/h3>\r\n<p><strong>A12:<\/strong> Pour les t\u00f4les en acier au carbone standard (1,0 mm \u00e0 2,5 mm d'\u00e9paisseur), le chevauchement radial vertical optimal se situe entre 0,3 mm et 0,6 mm. Cette profondeur permet d'obtenir une coupe nette sans exercer de contrainte inutile sur les roulements de l'arbre de la refendeuse.<\/p>\r\n<h3>Question: Comment pouvons-nous \u00e9viter l'\u00e9caillage des bords lors du refendage de bobines d'acier voil\u00e9es ou non planes ?<\/h3>\r\n<p><strong>A13:<\/strong> Les bobines voil\u00e9es cr\u00e9ent des mouvements lat\u00e9raux impr\u00e9visibles et des forces d'impact in\u00e9gales lors de leur passage \u00e0 travers les lames. Pour ces conditions, l'acier \u00e0 outils H13 modifi\u00e9 au W+Ni est recommand\u00e9. Il offre une grande t\u00e9nacit\u00e9 de matrice pour absorber les chocs soudains, combin\u00e9 \u00e0 un petit micro-chanfrein de protection sur l'ar\u00eate de coupe.<\/p>\r\n<h3>Question: Quels sont les crit\u00e8res de fabrication standard sans tol\u00e9rance pour les dimensions non critiques des couteaux ?<\/h3>\r\n<p><strong>A14:<\/strong> Toutes les dimensions non critiques ou non sp\u00e9cifi\u00e9es sont fabriqu\u00e9es conform\u00e9ment aux normes ISO 2768-mK, garantissant une qualit\u00e9 constante pour chaque pi\u00e8ce.<\/p>\r\n<h3>Question: \u00c0 quelle fr\u00e9quence les couteaux de refendage rotatifs doivent-ils \u00eatre inspect\u00e9s pour d\u00e9tecter des micro-fissures lors de la maintenance ?<\/h3>\r\n<p><strong>A15:<\/strong> Les couteaux doivent \u00eatre soigneusement nettoy\u00e9s et inspect\u00e9s par contr\u00f4le magn\u00e9toscopique (MPI) \u00e0 chaque cycle d'aff\u00fbtage programm\u00e9. Meuler par-dessus des micro-fissures existantes sans les \u00e9liminer compl\u00e8tement peut entra\u00eener l'approfondissement des fissures, provoquant une d\u00e9faillance soudaine du couteau lorsque l'outil est remis en service.<\/p>\r\n<h3>Question: Quel type de meule est recommand\u00e9 pour le r\u00e9aff\u00fbtage des couteaux en H13 modifi\u00e9 ?<\/h3>\r\n<p><strong>A16:<\/strong> Il est recommand\u00e9 d'utiliser des meules en Nitrure de Bore Cubique (CBN) \u00e0 liant vitrifi\u00e9, utilis\u00e9es avec un liquide de refroidissement synth\u00e9tique soluble dans l'eau \u00e0 haut d\u00e9bit. \u00c9vitez d'utiliser des meules conventionnelles en oxyde d'aluminium avec des avances importantes, car la chaleur de friction g\u00e9n\u00e9r\u00e9e peut facilement provoquer un revenu localis\u00e9 et des br\u00fblures de meulage sur l'acier \u00e0 outils.<\/p>\r\n<h3>Question: Pourquoi une tol\u00e9rance d'al\u00e9sage serr\u00e9e est-elle importante pour les lignes de refendage \u00e0 haute vitesse ?<\/h3>\r\n<p><strong>A17:<\/strong> L'al\u00e9sage central est g\u00e9n\u00e9ralement fabriqu\u00e9 avec une tol\u00e9rance H5 pour assurer un ajustement serr\u00e9 et pr\u00e9cis sur l'arbre de la refendeuse. Tout jeu excessif entre l'al\u00e9sage et l'arbre provoquera une rotation l\u00e9g\u00e8rement excentr\u00e9e du couteau, entra\u00eenant des variations cycliques du chevauchement radial et cr\u00e9ant une coupe irr\u00e9guli\u00e8re avec des bavures intermittentes.<\/p>\r\n<h3>Question: Qu'est-ce qui cause la g\u00e9n\u00e9ration importante de poussi\u00e8re de fer autour de l'ensemble de refendage ?<\/h3>\r\n<p><strong>A18:<\/strong> L'exc\u00e8s de poussi\u00e8re de fer est g\u00e9n\u00e9ralement caus\u00e9 par le frottement du mat\u00e9riau contre des flancs de lame rugueux (Ra &gt;0,8 \u03bcm) ou par l'utilisation d'un jeu trop serr\u00e9, ce qui broie les bords coup\u00e9s. Le passage \u00e0 des faces de lame polies miroir (Ra &lt;0,2 \u03bcm) r\u00e9duit consid\u00e9rablement cette friction et diminue la quantit\u00e9 de poussi\u00e8re.<\/p>\r\n<h3>Question: Comment choisir entre l'acier de matrice (Caldie) et l'acier de m\u00e9tallurgie des poudres (ASP 23) ?<\/h3>\r\n<p><strong>A19:<\/strong> Choisissez l'acier de matrice si votre d\u00e9fi principal est la fissuration des lames ou les chocs m\u00e9caniques importants dus \u00e0 des plaques \u00e9paisses et dures. Choisissez l'acier de m\u00e9tallurgie des poudres si votre objectif principal est la r\u00e9sistance \u00e0 l'usure \u00e0 long terme et le maintien d'une ar\u00eate tr\u00e8s propre et sans bavure sur les lignes \u00e0 haute vitesse.<\/p>\r\n<h3>Question: Les aciers \u00e0 outils pour travail \u00e0 chaud standard peuvent-ils \u00eatre utilis\u00e9s pour des applications de refendage \u00e0 froid ?<\/h3>\r\n<p><strong>A20:<\/strong> Oui. L'acier H13 standard est un acier pour travail \u00e0 chaud, mais sa grande t\u00e9nacit\u00e9 aux chocs, son excellente ductilit\u00e9 et sa r\u00e9sistance \u00e0 la fatigue thermique en font un mat\u00e9riau de base exceptionnel pour les lignes de refendage d'acier au carbone lamin\u00e9 \u00e0 froid et \u00e0 chaud.<\/p>\r\n<p>Technical Reviewed by: Senior Metallurgical Specialist at Maxtor Metal.<\/p>\r\n<hr \/>\r\n<p>Choisir <a href=\"https:\/\/maxtormetal.com\/fr\/about\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #ffcc00;\"><em>Nanjing Metal Industrial<\/em><\/span><\/a>Les lames de cisaille rotatives pour une production de refendage de m\u00e9tal plus efficace et pr\u00e9cise, et profitez de l&#039;assurance de performances durables et de haute qualit\u00e9.<\/p>\r\n<h4><a href=\"https:\/\/maxtormetal.com\/fr\/brochures\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #ffcc00;\"><em>Ouvrir les Brochures<\/em><\/span><\/a><\/h4>\r\n<hr \/>\r\n<h2>Pourquoi Choisir METAL ?<\/h2>\r\n<ol>\r\n<li><strong> Service d'Importation Centralis\u00e9 et Sans Tracas<\/strong><\/li>\r\n<\/ol>\r\n<p>Profitez de la commodit\u00e9 d'une importation fluide. Du transport au d\u00e9douanement, nous g\u00e9rons l'ensemble du processus. Il vous suffit de payer la TVA et d'attendre l'arriv\u00e9e de vos marchandises.<\/p>\r\n<ol start=\"2\">\r\n<li><strong> Prix Comp\u00e9titifs<\/strong><\/li>\r\n<\/ol>\r\n<p>Nous avons vu nos lames exceller dans d'innombrables applications et sommes pr\u00eats pour tout projet que vous nous confierez. Attendez-vous \u00e0 la pr\u00e9cision, \u00e0 la durabilit\u00e9 et \u00e0 des prix comp\u00e9titifs in\u00e9gal\u00e9s.<\/p>\r\n<ol start=\"3\">\r\n<li><strong> ODM &amp; OEM Disponibles<\/strong><\/li>\r\n<\/ol>\r\n<p>Que vous fournissiez des dessins, des croquis ou des \u00e9chantillons, nous pouvons concevoir et fabriquer pour vous. Nous avons \u00e9galement la capacit\u00e9 d'aider \u00e0 modifier les conceptions et sp\u00e9cifications existantes pour am\u00e9liorer presque toutes les applications d'outillage industriel. Veuillez contacter notre \u00e9quipe de vente d\u00e9di\u00e9e pour discuter de vos besoins sp\u00e9cifiques.<\/p>\r\n<ol start=\"4\">\r\n<li><strong> Contr\u00f4le Qualit\u00e9 Rigoureux<\/strong><\/li>\r\n<\/ol>\r\n<p>Une s\u00e9rie de tests et d'inspections sont effectu\u00e9s pour contr\u00f4ler la qualit\u00e9, incluant l'inspection du premier article, l'inspection des mat\u00e9riaux entrants et les mat\u00e9riaux certifi\u00e9s, l'inspection qualit\u00e9 en cours de production, et l'inspection qualit\u00e9 finale.<\/p>\r\n<ol start=\"5\">\r\n<li><strong> Approvisionnement Flexible, Coop\u00e9ration Illimit\u00e9e<\/strong><\/li>\r\n<\/ol>\r\n<p>Que vous soyez un importateur, un distributeur, un grossiste ou un utilisateur final, nous vous accueillons. B\u00e9n\u00e9ficiez de faibles quantit\u00e9s minimales de commande (MOQ), de demandes sans tracas et d'une plus grande libert\u00e9 d'achat.<\/p>\r\n<ol start=\"6\">\r\n<li><strong> Suivi en Temps R\u00e9el de l'Avancement de la Production<\/strong><\/li>\r\n<\/ol>\r\n<p>Consid\u00e9rez-nous comme votre moniteur exclusif. Nous vous fournirons r\u00e9guli\u00e8rement des mises \u00e0 jour sur chaque \u00e9tape cruciale de votre cha\u00eene de production. Quelle que soit la distance, vous aurez un aper\u00e7u en temps r\u00e9el de l'avancement de votre produit.<\/p>\r\n<hr \/>\r\n<h2>Affichage de la lame de cisaillement \u00e0 rouleaux :<\/h2>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4853\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247111.jpg\" alt=\"lame de cisaillement \u00e0 rouleaux\" width=\"792\" height=\"525\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247111.jpg 1630w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247111-300x199.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247111-1024x678.jpg 1024w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247111-768x509.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247111-1536x1018.jpg 1536w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247111-18x12.jpg 18w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247111-600x398.jpg 600w\" sizes=\"(max-width: 792px) 100vw, 792px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4850\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/11.jpg\" alt=\"lame de cisaillement \u00e0 rouleaux\" width=\"791\" height=\"593\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/11.jpg 600w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/11-300x225.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/11-16x12.jpg 16w\" sizes=\"(max-width: 791px) 100vw, 791px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4851 size-full\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247211.jpg\" alt=\"lame de cisaillement \u00e0 rouleaux\" width=\"790\" height=\"706\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247211.jpg 790w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247211-300x268.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247211-768x686.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247211-13x12.jpg 13w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247211-600x536.jpg 600w\" sizes=\"(max-width: 790px) 100vw, 790px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4852 size-full\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247311.jpg\" alt=\"lame de cisaillement \u00e0 rouleaux\" width=\"790\" height=\"626\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247311.jpg 790w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247311-300x238.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247311-768x609.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247311-15x12.jpg 15w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u5200\u7247311-600x475.jpg 600w\" sizes=\"(max-width: 790px) 100vw, 790px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4854 size-full\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247211.jpg\" alt=\"lame de cisaillement \u00e0 rouleaux\" width=\"790\" height=\"590\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247211.jpg 790w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247211-300x224.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247211-768x574.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247211-16x12.jpg 16w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247211-600x448.jpg 600w\" sizes=\"(max-width: 790px) 100vw, 790px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4855 size-full\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247311.jpg\" alt=\"lame de cisaillement \u00e0 rouleaux\" width=\"790\" height=\"757\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247311.jpg 790w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247311-300x287.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247311-768x736.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247311-13x12.jpg 13w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/\u6eda\u526a\u673a\u5200\u7247311-600x575.jpg 600w\" sizes=\"(max-width: 790px) 100vw, 790px\" \/><\/p>\r\n<p>&nbsp;<\/p>\r\n<hr \/>\r\n<h2>Vid\u00e9o:<\/h2>\r\n<p><iframe loading=\"lazy\" title=\"Lame de cisaillement pour ligne de refendage de bobines Metal\" width=\"563\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/aYO-UviiYkg?feature=oembed&#038;enablejsapi=1&#038;origin=https:\/\/maxtormetal.com\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\r\n<hr \/>\r\n<h2>Blogs Associ\u00e9s :<\/h2>\r\n<ol>\r\n<li class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/maxtormetal.com\/fr\/choose-use-regrind-slitter-blades\/\" target=\"_blank\" rel=\"noopener\">Comment choisir, utiliser et r\u00e9aff\u00fbter les lames de d\u00e9coupe de plaques d&#039;acier\u00a0?<\/a><\/li>\r\n<li>\r\n<p class=\"elementor-heading-title elementor-size-default\">\u00a0<a href=\"https:\/\/maxtormetal.com\/fr\/metal-cutting-blade-materials-chinese-suppliers\/\" target=\"_blank\" rel=\"noopener\">8 types de mat\u00e9riaux pour lames de coupe en m\u00e9tal sont couramment utilis\u00e9s par les fournisseurs chinois.<\/a><\/p>\r\n<\/li>\r\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>1. High-Precision Roller Shearing Blades &amp; Rotary Slitter Knives At Maxtor Metal, we manufacture rotary slitter knives and roller shear blades for high-speed metal slitting lines and side trimmers, where they function as overlapping cutting tools. Operating through synchronized, paired upper and lower rotary movements, these tools execute continuous, chipless longitudinal slitting on cold-rolled, hot-rolled, [&hellip;]<\/p>\n","protected":false},"featured_media":3132,"template":"","meta":[],"product_cat":[107,114,98],"product_tag":[399,398],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.6 (Yoast SEO v23.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>High-Precision Rotary Slitter Knives &amp; Roller Shearing Blades<\/title>\n<meta name=\"description\" content=\"Industrial rotary sitter knives and roller shear blades for heavy-duty metal coil processing. 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