解決策 以下へのアップグレード: SK5 または 440C for higher primary carbide density, extending run-times by 200%. For a complete framework on when to regrind versus scrap strip blades — including measurable chipping thresholds, minimum stock removal depth, and a five-step shop-floor decision protocol — see the Regrinding Industrial Strip Blades: Sharpening vs Scrap Guide.
表面仕上げ(刃先 Ra < 0.8µm): 多段階の縦方向研磨によって実現されます。この平滑性により、切削力が均等に分散され、微小破壊を防ぎます。.
寸法精度: Compliance with ISO 2768-mK ensures that every millimeter of the 500m coil is within industrial “Medium” to “Fine” tolerance standards.
8. Blade Strip Steel Manufacturing Process & Quality Inspection
Precision Cold Rolling: Achieving thickness within ±0.01 mm.
Continuous Bright Annealing: Removing work-hardening stresses for uniform grain structure.
Edge Grinding: CNC controlled beveling to meet Ra < 0.8µm.
Hardness Testing: Rockwell C testing every 50 meters of the coil.
Surface Inspection: Automatic optical inspection (AOI) for scratches or pits.
For guidance on how to read and validate the Material Test Certificate (MTC) that accompanies each coil — including EN 10204 3.1 certificate verification, chemistry cross-check, and 9-point hardness mapping — see theTool Steel MTC Reading & QA Checklist for Strip Blades.
Blade Strip Steel counterBlade Strip Steel hardness test
9. Case Study: Performance Benchmarks
Case 1: Urschel-type Grid Dicer Optimization
Client: Frozen Vegetable Processor.
Initial Condition: Standard 420 blades failing every 8 hours due to corner cracking.
エンジニアリングソリューション: 移行しました 440C Strip Steel with a revised tempering profile (HRC 54).
Outcome: Blade life extended to 24 hours; 200% improvement in uptime. For a detailed QA validation protocol and ROI analysis behind this material transition — including heat-treatment window definition, retained austenite control, and field trial KPI design — see Validating 440C Dicer Blades at HRC 56–58: Heat-Treatment, QA & ROI. Engineering teams who have completed the 440C qualification process above often find that the next OEE lever is coil length. See コイル交換頻度の削減によるOEE利益の向上 for the changeover math and a blade strip producer pilot case.
Case 2: High-Speed PE Film Slitting
Client: Flexible Packaging Manufacturer.
Initial Condition: Frequent “snagging” and film tearing using standard slitter blades.
エンジニアリングソリューション: Implemented C100S Carbon Steel with Ra 0.4µm edge finish.
Outcome: Increase in slitting speed by 25% with zero reported film tears.
10. よくある質問(FAQコーナー)
Q: Why use SK5 instead of Stainless?
A: SK5 allows for higher peak hardness (HRC 62), making it superior for non-corrosive slitting of abrasive materials like textiles.
Q: What is the maximum thickness available?
A: The maximum thickness is 2.0mm. Beyond this, the increased cross-section significantly raises the slotting resistance during grid manufacturing, making thinner profiles (0.5–1.2mm) more practical for most dicing applications.
Q: Do you provide blades with slots already cut?
A: No, we provide the base material (strip steel) in coils for your manufacturing process.
Q: How does thickness tolerance affect my grid assembly?
A: In a dicing grid, errors accumulate. A ±0.01 mm tolerance ensures that the grid slots align perfectly across the entire width of the machine.
Q: Is 440C harder than 420?
A: Yes. 440C has higher carbon, allowing it to reach HRC 56-58, whereas 420 typically ranges from HRC 48-52.
Q: Can you provide a 500m coil without any welds?
A: Yes, we specialize in high-integrity, single-piece long coils to prevent machine jams.
Q: What surface finish should I choose for meat dicing?
A: We recommend the Ra < 0.8µm edge finish to prevent protein adhesion.
Q: What causes “edge rolling” (dulling)?
A: Usually, the hardness is too low for the material being cut. Increasing HRC or switching to a higher carbon grade (C100S) is the solution.
Q: Does your steel meet ISO 2768-mK standards?
A: Yes, all our precision strip steel is manufactured to these tolerances. Each coil ships with an EN 10204 3.1 Material Test Certificate covering chemistry, hardness, and heat number traceability. For a step-by-step guide on how to read and verify these documents — including how to cross-check chemistry against ASTM A681/ISO 4957 and map hardness uniformity — see the Tool Steel MTC Reading & QA Checklist for Strip Blades.
Q: Why is Ra < 1.6µm used for the body?
A: This allows for sufficient grip in machine holders while maintaining a smooth enough profile to prevent debris buildup.
Q: How should I store high-carbon coils?
A: Keep them in their original VCI packaging in a dry, temperature-controlled warehouse.
Q: Can this steel be used for medical-grade dicers?
A: Yes, 440C is frequently used in medical/surgical cutting tools due to its purity and hardness.
Q: What is the benefit of the 300m and 500m coil lengths?
A: It reduces the frequency of coil changes, significantly increasing the OEE (Overall Equipment Effectiveness) of automated lines.
Q: Can you provide custom widths like 15.5mm?
A: Yes, we provide custom slitting within the 7mm to 100mm range.
Q: How do I select between C75 and SK5?
A: Choose C75 if your blade needs to flex significantly without breaking; choose SK5 if edge retention is the absolute priority.
Whether you are an importer, distributor, wholesaler or end-user, we welcome you to join us with a minimum MOQ, no hassle for inquiry and more freedom for purchasing.