{"id":7675,"date":"2026-05-14T15:00:00","date_gmt":"2026-05-14T07:00:00","guid":{"rendered":"https:\/\/maxtormetal.com\/?p=7675"},"modified":"2026-05-13T14:15:44","modified_gmt":"2026-05-13T06:15:44","slug":"bottom-circular-knives-that-pair-with-top-knives-for-burr-free-slits","status":"publish","type":"post","link":"https:\/\/maxtormetal.com\/fr\/bottom-circular-knives-that-pair-with-top-knives-for-burr-free-slits\/","title":{"rendered":"Couteaux circulaires inf\u00e9rieurs : Comment les associer aux couteaux sup\u00e9rieurs pour une coupe sans bavure"},"content":{"rendered":"<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"771\" height=\"764\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Knife-Rings1.jpg\" alt=\"Couteaux circulaires inf\u00e9rieurs : Comment les associer aux couteaux sup\u00e9rieurs pour une coupe sans bavure\" class=\"wp-image-7186\" style=\"width:461px;height:auto\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Knife-Rings1.jpg 771w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Knife-Rings1-300x297.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Knife-Rings1-150x150.jpg 150w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Knife-Rings1-768x761.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Knife-Rings1-12x12.jpg 12w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Knife-Rings1-600x595.jpg 600w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Knife-Rings1-100x100.jpg 100w\" sizes=\"(max-width: 771px) 100vw, 771px\" \/><\/figure><\/div><ul><li>Ce que les lecteurs vont apprendre : associer les couteaux circulaires inf\u00e9rieurs aux couteaux sup\u00e9rieurs pour un refendage du papier sans bavures<\/li>\n\n<li>Port\u00e9e : param\u00e8tres de r\u00e9glage, mat\u00e9riaux et g\u00e9om\u00e9trie, tol\u00e9rances et contr\u00f4le qualit\u00e9, d\u00e9pannage et maintenance<\/li>\n\n<li>R\u00e9sultat : un TRS plus \u00e9lev\u00e9, une dur\u00e9e de vie des outils prolong\u00e9e, une qualit\u00e9 stable et un TCO r\u00e9duit<\/li><\/ul><p><strong>Derni\u00e8re mise \u00e0 jour\u00a0:<\/strong>&nbsp;2026-05-12<\/p><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>Note:<\/strong>&nbsp;V\u00e9rifiez toujours la g\u00e9om\u00e9trie des couteaux, le chevauchement\/la pression et les proc\u00e9dures de s\u00e9curit\u00e9 par rapport au manuel de votre bobineuse-refendeuse d'origine (OEM) et \u00e0 la conception des porte-couteaux. Les plages ci-dessous sont des points de d\u00e9part et doivent \u00eatre valid\u00e9es sur votre ligne \u00e0 basse vitesse avant de lancer la production.<\/p><\/blockquote><h2 class=\"wp-block-heading\" id=\"78ff3593-780d-4eb2-abfd-d6d1634021b6\">Principes fondamentaux du refendage par cisaillement<\/h2><p>Le refendage par cisaillement est une \u201c coupe en ciseaux \u201d contr\u00f4l\u00e9e entre un couteau sup\u00e9rieur et un couteau inf\u00e9rieur. Lorsque la paire est correctement r\u00e9gl\u00e9e, la bande se s\u00e9pare avec un minimum de peluchage, peu de poussi\u00e8re et une largeur de coupe constante. Si le r\u00e9glage est incorrect, la m\u00eame ligne peut d\u00e9river vers des bavures, du gla\u00e7age, de l'\u00e9chauffement et du broutement.<\/p><p>Pour obtenir des coupes sans bavures, il faut voir les choses ainsi : vous n'achetez pas un couteau circulaire inf\u00e9rieur de mani\u00e8re isol\u00e9e. Vous construisez un syst\u00e8me de coupe coordonn\u00e9 qui comprend le couteau sup\u00e9rieur, les porte-couteaux et les param\u00e8tres de r\u00e9glage qui maintiennent la stabilit\u00e9 du point de coupe.<\/p><h3 class=\"wp-block-heading\" id=\"a8377383-2883-42e7-862d-7685a9f8710b\">R\u00f4les respectifs des couteaux sup\u00e9rieurs et inf\u00e9rieurs<\/h3><p>Le couteau sup\u00e9rieur fournit g\u00e9n\u00e9ralement l'ar\u00eate de coupe menante et l\u201c\u201d entr\u00e9e \u00bb dans la bande. Le couteau inf\u00e9rieur fait office de contre-ar\u00eate et d\u00e9finit la ligne d'appui o\u00f9 se produit r\u00e9ellement le cisaillement. Si l'un des couteaux pr\u00e9sente un faux-rond, des dommages sur l'ar\u00eate ou une g\u00e9om\u00e9trie de face irr\u00e9guli\u00e8re, le point de coupe se d\u00e9place lors de la rotation des couteaux.<\/p><p>Dans la plupart des configurations de cisaillement, le couteau inf\u00e9rieur doit \u00e9galement rester stable sur le plan dimensionnel sous l'effet de la charge lat\u00e9rale. C'est cette stabilit\u00e9 qui vous permet d'utiliser des r\u00e9glages moins agressifs tout en obtenant une coupe nette.<\/p><h3 class=\"wp-block-heading\" id=\"8396f4f4-c44f-4610-94b3-64c8fd6a779d\">M\u00e9canique du cisaillement : chevauchement, charge lat\u00e9rale, angle d'engagement<\/h3><p>Trois variables de r\u00e9glage font l'essentiel du travail :<\/p><ul><li><strong>Chevaucher<\/strong>: la profondeur de p\u00e9n\u00e9tration des couteaux l'un dans l'autre sur leur trajectoire de coupe. Un chevauchement trop faible peut laisser des fibres non coup\u00e9es ; un chevauchement excessif augmente l'\u00e9chauffement et l'usure de l'ar\u00eate.<\/li>\n\n<li><strong>Side load<\/strong>: la force lat\u00e9rale qui maintient les couteaux en contact. Une force trop faible favorise le flottement et le poudrage ; une force trop \u00e9lev\u00e9e acc\u00e9l\u00e8re l'usure et peut provoquer du gla\u00e7age.<\/li>\n\n<li><strong>Angle d'engagement (pincement)<\/strong>: le faible angle qui rend la coupe progressive sur toute la largeur de la bande au lieu de frapper toute la largeur d'un coup.<\/li><\/ul><p>DIENES note que la g\u00e9n\u00e9ration de poussi\u00e8re et les probl\u00e8mes de qualit\u00e9 de coupe proviennent souvent de la stabilit\u00e9 de l'angle de cisaillement\/du point de coupe et de la g\u00e9om\u00e9trie du syst\u00e8me, plut\u00f4t que d'une \u201c simple lame \u00e9mouss\u00e9e \u201d (<em><strong><a href=\"https:\/\/www.dienesusa.com\/dust-generation-caused-by-the-shear-angle-cutting-point-and-the-geometry-of-the-knife-and-system\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">DIENES : causes de la g\u00e9n\u00e9ration de poussi\u00e8re<\/a>)<\/strong><\/em>. Traisez le chevauchement, la charge lat\u00e9rale et l'angle d'engagement comme un syst\u00e8me coupl\u00e9 : modifiez-en un, puis v\u00e9rifiez \u00e0 nouveau les autres.<\/p><h3 class=\"wp-block-heading\" id=\"bd26999d-c795-41c9-8b8a-42a959f8d2d1\">Cisaillement tangentiel vs cisaillement enveloppant dans la transformation du papier<\/h3><p>Dans&nbsp;<strong>cisaillement tangentiel<\/strong>, la bande est coup\u00e9e au point de tangence avec un enveloppement minimal. Il est g\u00e9n\u00e9ralement plus facile \u00e0 inspecter et \u00e0 r\u00e9gler car la zone de coupe est visible et le chemin de tension de la bande est direct.<\/p><p>Dans&nbsp;<strong>cisaillement enveloppant<\/strong>, la bande s'enroule autour de l'un des couteaux, ce qui augmente le contact et am\u00e9liore parfois l'amorce de la coupe sur les qualit\u00e9s difficiles. En contrepartie, les configurations enveloppantes peuvent \u00eatre plus sensibles \u00e0 la tension, \u00e0 la contamination et \u00e0 l'accumulation de chaleur. Si votre proc\u00e9d\u00e9 a tendance \u00e0 g\u00e9n\u00e9rer de la poussi\u00e8re ou du gla\u00e7age, commencez par un enveloppement mod\u00e9r\u00e9 et donnez la priorit\u00e9 \u00e0 la stabilit\u00e9 du point de coupe avant d'augmenter l'agressivit\u00e9.<\/p><h2 class=\"wp-block-heading\" id=\"12d701ef-1bbb-4ed5-b4fd-aa344629dbb6\">Param\u00e8tres de r\u00e9glage par type de papier<\/h2><div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/11\/Circular-knives.jpg\" alt=\"Param\u00e8tres de r\u00e9glage par type de papier\" class=\"wp-image-5540\" style=\"width:520px;height:auto\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/11\/Circular-knives.jpg 1000w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/11\/Circular-knives-300x300.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/11\/Circular-knives-150x150.jpg 150w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/11\/Circular-knives-768x768.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/11\/Circular-knives-12x12.jpg 12w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/11\/Circular-knives-600x600.jpg 600w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/11\/Circular-knives-100x100.jpg 100w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div><p>Le papier se comporte diff\u00e9remment selon sa qualit\u00e9 : le papier mousseline (tissue) peut se d\u00e9chirer et pelucher sous une charge lat\u00e9rale trop \u00e9lev\u00e9e ; les papiers couch\u00e9s peuvent glacer lorsque l'interface s'\u00e9chauffe ; le carton peut entra\u00eener des vibrations du syst\u00e8me si les porte-couteaux ne sont pas rigides.<\/p><p>L'objectif n'est pas de trouver un r\u00e9glage \u201c parfait \u201d unique. L'objectif est de standardiser une plage de d\u00e9part par type de papier, puis de v\u00e9rifier et de documenter les r\u00e9glages que votre machine et vos porte-couteaux peuvent maintenir de mani\u00e8re constante.<\/p><h3 class=\"wp-block-heading\" id=\"3a013653-d513-4399-ad75-ed603e13f973\">Plages de d\u00e9part recommand\u00e9es : papier mousseline, papier fin, couch\u00e9, carton<\/h3><p>Use these as&nbsp;<strong>plages de d\u00e9part<\/strong>, puis ajustez par petites \u00e9tapes. La g\u00e9om\u00e9trie des couteaux de votre constructeur d'origine (OEM) et la conception des porte-couteaux peuvent d\u00e9caler la plage optimale.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><th>Type de mat\u00e9riau (exemple)<\/th><th>Chevauchement (mm)<\/th><th>Charge lat\u00e9rale (lbf)<\/th><th>Angle d'engagement (\u00b0)<\/th><th>Risque typique si trop agressif<\/th><\/tr><tr><td>Papier mousseline \/ papier souple<\/td><td>0.3\u20130.6<\/td><td>1\u20132<\/td><td>0.25<\/td><td>Plissement, d\u00e9chirure<\/td><\/tr><tr><td>Papier fin (plage de d\u00e9part g\u00e9n\u00e9rale)<\/td><td>0.4\u20130.75<\/td><td>2\u20134<\/td><td>0.25\u20130.5<\/td><td>Poudrage, usure de l'ar\u00eate<\/td><\/tr><tr><td>Papier couch\u00e9 l\u00e9ger<\/td><td>0.4\u20130.8<\/td><td>1\u20133<\/td><td>0.25\u20130.5<\/td><td>Poussi\u00e8re, \u00e9chauffement, polissage de l'ar\u00eate<\/td><\/tr><tr><td>Papier \u00e9tiquette<\/td><td>0.5\u20130.8<\/td><td>1\u20134<\/td><td>0.25\u20130.5<\/td><td>Accumulation d&#039;adh\u00e9sif<\/td><\/tr><tr><td>Carton pour bo\u00eete pliante<\/td><td>0.8\u20131.2<\/td><td>3\u20136<\/td><td>0.5\u20130.75<\/td><td>\u00c9crasement des fibres<\/td><\/tr><tr><td>Carton duplex<\/td><td>1.0\u20131.5<\/td><td>4\u20138<\/td><td>0.5\u20130.75<\/td><td>D\u00e9collement des bords<\/td><\/tr><\/tbody><\/table><\/figure><p><em>Ce sont des valeurs pratiques<\/em>&nbsp;<strong><em>Windows de d\u00e9marrage<\/em><\/strong>&nbsp;<em>couramment utilis\u00e9es dans le fa\u00e7onnage. Les d\u00e9finitions et les valeurs optimales varient selon le diam\u00e8tre des couteaux, la conception du porte-couteau et la vitesse de d\u00e9filement de la bande \u2014 v\u00e9rifiez \u00e0 basse vitesse et documentez votre plage de stabilit\u00e9 par nuance.<\/em><\/p><p>Pour adopter une approche op\u00e9rateur ax\u00e9e sur des r\u00e9glages de refendage s\u00fbrs et r\u00e9p\u00e9tables, le guide de Valmet sur les contr\u00f4les de positionnement et la v\u00e9rification syst\u00e9matique est une r\u00e9f\u00e9rence utile (<a href=\"https:\/\/www.valmet.com\/insights\/articles\/up-and-running\/performance\/SlitterAdjustments\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\"><em><strong>Valmet : r\u00e9glages des refendeuses<\/strong><\/em><\/a>).<\/p><h3 class=\"wp-block-heading\" id=\"34947c5b-f747-408f-af31-c6563664a001\">Flux de travail de v\u00e9rification : alignement, chevauchement, pression, contr\u00f4les \u00e0 basse vitesse<\/h3><p>Un moyen rapide de pr\u00e9venir les \u201c bavures myst\u00e8res \u201d consiste \u00e0 v\u00e9rifier le syst\u00e8me de coupe toujours dans le m\u00eame ordre :<\/p><ul><li><strong>Alignement<\/strong>: confirmez que les couteaux suivent pr\u00e9cis\u00e9ment la trajectoire de la bande ; v\u00e9rifiez l'absence de jeu dans les porte-couteaux.<\/li>\n\n<li><strong>Chevaucher<\/strong>: d\u00e9finissez le chevauchement cible, puis confirmez qu'il se maintient sur tout l'arbre.<\/li>\n\n<li><strong>Pression \/ charge lat\u00e9rale<\/strong>: augmentez uniquement jusqu'\u00e0 obtenir un contact stable sans \u00e9chauffement.<\/li>\n\n<li><strong>Contr\u00f4les \u00e0 basse vitesse<\/strong>: faites tourner \u00e0 basse vitesse et inspectez les bords avant de passer \u00e0 la vitesse de production.<\/li><\/ul><p>Correctement effectu\u00e9e, cette proc\u00e9dure transforme le r\u00e9glage en un processus contr\u00f4l\u00e9 plut\u00f4t qu'en une suite d'essais et d'erreurs.<\/p><h3 class=\"wp-block-heading\" id=\"549beda7-fd4b-4563-b039-3a8286ac539b\">Adaptation \u00e0 la vitesse : ajustez la charge lat\u00e9rale et l'angle d'engagement avec prudence<\/h3><p>Lorsque vous augmentez la vitesse de ligne, vous avez g\u00e9n\u00e9ralement besoin d'un peu plus de stabilit\u00e9 au point de coupe. Proc\u00e9dez aux modifications avec prudence :<\/p><ul><li>Augmentez la charge lat\u00e9rale par petits paliers et surveillez la hausse de temp\u00e9rature et le gla\u00e7age.<\/li>\n\n<li>Ajustez l'angle d'engagement uniquement lorsque la lisi\u00e8re pr\u00e9sente un mode de d\u00e9faillance clair (bavures, bord effiloch\u00e9 ou usure irr\u00e9guli\u00e8re).<\/li>\n\n<li>Re-v\u00e9rifiez le faux-rond et la rigidit\u00e9 du porte-couteau si des vibrations apparaissent apr\u00e8s un changement de vitesse.<\/li><\/ul><div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-22.jpeg\" alt=\"Operational infographic showing overlap, side load, and cant angle ranges by paper grade\" class=\"wp-image-7677\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-22.jpeg 1536w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-22-300x200.jpeg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-22-1024x683.jpeg 1024w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-22-768x512.jpeg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-22-18x12.jpeg 18w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-22-600x400.jpeg 600w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\" id=\"4cb4af60-7b81-46d5-8782-15f171e50ed9\">Couteaux circulaires inf\u00e9rieurs : s\u00e9lection technique<\/h2><div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"939\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/12\/Rotary-slit-blade.jpg\" alt=\"Couteaux circulaires inf\u00e9rieurs : s\u00e9lection technique\" class=\"wp-image-5614\" style=\"aspect-ratio:1.3333333333333333;object-fit:cover;width:576px;height:auto\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/12\/Rotary-slit-blade.jpg 1000w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/12\/Rotary-slit-blade-300x282.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/12\/Rotary-slit-blade-768x721.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/12\/Rotary-slit-blade-13x12.jpg 13w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/12\/Rotary-slit-blade-600x563.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div><p>Les couteaux circulaires inf\u00e9rieurs remplissent deux fonctions \u00e0 la fois : ils fournissent la contre-ar\u00eate et maintiennent le point de coupe stable sous l'effet de la charge lat\u00e9rale et de la vitesse. Le choix consiste principalement \u00e0 adapter&nbsp;<strong>le mat\u00e9riau + la duret\u00e9<\/strong>,&nbsp;<strong>la g\u00e9om\u00e9trie du tranchant<\/strong>, et&nbsp;<strong>la g\u00e9om\u00e9trie du corps<\/strong>&nbsp;\u00e0 votre nuance de mati\u00e8re, votre vitesse et vos objectifs de productivit\u00e9.<\/p><p>Si vous avez besoin d'un aper\u00e7u g\u00e9n\u00e9ral des cat\u00e9gories de couteaux circulaires et des rev\u00eatements courants dans l'industrie, la page de MAXTOR METAL<strong><em>\u00a0<a href=\"https:\/\/maxtormetal.com\/fr\/produit\/lames-circulaires\/\" target=\"_blank\" rel=\"noreferrer noopener\">couteaux circulaires et lames<\/a>\u00a0<\/em><\/strong>r\u00e9sume les mat\u00e9riaux typiques, les options de rev\u00eatement et les points de contr\u00f4le d'inspection.<\/p><h3 class=\"wp-block-heading\" id=\"4fdbc8db-3ba1-48b0-a0e6-631922b9f36f\">Mat\u00e9riaux et duret\u00e9 : D2, M2, PM-HSS, carbure<\/h3><p>Le choix du mat\u00e9riau doit refl\u00e9ter ce qui cause r\u00e9ellement l'usure sur votre ligne :<\/p><ul><li><strong>D2<\/strong>: bonne r\u00e9sistance \u00e0 l'usure et \u00e0 la compression pour de nombreuses applications de fa\u00e7onnage ; choix courant pour obtenir des performances stables avec des r\u00e9aff\u00fbtages pr\u00e9visibles.<\/li>\n\n<li><strong>M2 (HSS)<\/strong>: duret\u00e9 \u00e0 chaud plus \u00e9lev\u00e9e que le D2 ; utile lorsque l'\u00e9chauffement au niveau du tranchant est un probl\u00e8me r\u00e9current.<\/li>\n\n<li><strong>PM-HSS<\/strong>: distribution des carbures plus uniforme que l'HSS conventionnel ; souvent choisi pour une meilleure r\u00e9gularit\u00e9 d'usure et moins de micro-\u00e9br\u00e9chures.<\/li>\n\n<li><strong>Carbure<\/strong>: excellente r\u00e9sistance \u00e0 l'usure et tenue de coupe, mais plus fragile ; il exige g\u00e9n\u00e9ralement un contr\u00f4le plus strict du faux-rond et des porte-couteaux stables pour \u00e9viter les \u00e9br\u00e9chures.<\/li><\/ul><p>Plut\u00f4t que de rechercher la duret\u00e9 maximale, donnez la priorit\u00e9 \u00e0 la r\u00e9gularit\u00e9 : un traitement thermique stable, une duret\u00e9 v\u00e9rifi\u00e9e et une g\u00e9om\u00e9trie compatible avec votre configuration.<\/p><h3 class=\"wp-block-heading\" id=\"757d69ad-5af2-4e26-9fd4-033f1279f726\">G\u00e9om\u00e9tries de tranchant : simple\/double\/creux, profil mince vs standard<\/h3><p>C'est de la g\u00e9om\u00e9trie du tranchant que d\u00e9pend l'absence de bavures.<\/p><ul><li><strong>Single bevel<\/strong>\u00a0les g\u00e9om\u00e9tries peuvent \u00eatre plus tol\u00e9rantes dans certaines configurations, mais elles risquent de concentrer la charge au point de coupe.<\/li>\n\n<li><strong>Double bevel<\/strong>\u00a0les tranchants peuvent \u00e9quilibrer la coupe, mais ils exigent une grande rigueur d'alignement et de chevauchement.<\/li>\n\n<li><strong>\u00c0 d\u00e9pouille concave<\/strong>\u00a0les tranchants peuvent r\u00e9duire la zone de contact et faciliter la coupe de certaines nuances, mais ils sont plus sensibles aux dommages et \u00e0 la qualit\u00e9 du r\u00e9aff\u00fbtage.<\/li><\/ul><p>Pour le choix entre corps mince et standard, tenez compte de la rigidit\u00e9 et de la chaleur : les profils minces peuvent r\u00e9duire la tra\u00een\u00e9e et la poussi\u00e8re dans certains syst\u00e8mes, mais un profil standard offre plus de stabilit\u00e9 lorsque la charge lat\u00e9rale et la vitesse augmentent.<\/p><h3 class=\"wp-block-heading\" id=\"9e76e943-91d4-495b-b991-ef9bbb16312d\">Contre-couteaux coupelles vs plats : choix selon la bande et la vitesse<\/h3><p>La g\u00e9om\u00e9trie du corps influe sur le contact de la paire de couteaux et sur la tol\u00e9rance du syst\u00e8me aux petits d\u00e9fauts d'alignement.<\/p><ul><li><strong>Les contre-couteaux coupelles<\/strong>\u00a0peuvent aider \u00e0 stabiliser la ligne de contact et \u00e0 r\u00e9duire la sensibilit\u00e9 dans certaines configurations \u00e0 grande vitesse et \u00e0 bande mince.<\/li>\n\n<li><strong>Les contre-couteaux plats<\/strong>\u00a0sont simples et largement utilis\u00e9s, mais ils peuvent \u00eatre moins tol\u00e9rants lorsque les porte-couteaux ou les arbres manquent de rigidit\u00e9.<\/li><\/ul><p>Le bon choix d\u00e9pend de votre bande, de votre vitesse et de la stabilit\u00e9 de l'ensemble de votre porte-couteau.<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-21.jpeg\" alt=\"Comparative diagram of dished vs flat bottom circular knives with pros\/cons\" class=\"wp-image-7676\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-21.jpeg 1536w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-21-300x200.jpeg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-21-1024x683.jpeg 1024w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-21-768x512.jpeg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-21-18x12.jpeg 18w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2026\/05\/image-21-600x400.jpeg 600w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\" id=\"783620d0-5494-4c6f-86c8-98114191a52c\">Tol\u00e9rances, finition et contr\u00f4le qualit\u00e9<\/h2><div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/06\/slitter111.jpg\" alt=\"Tol\u00e9rances, finition et contr\u00f4le qualit\u00e9\" class=\"wp-image-4867\" style=\"width:496px;height:auto\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/06\/slitter111.jpg 800w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/06\/slitter111-300x300.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/06\/slitter111-150x150.jpg 150w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/06\/slitter111-768x768.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/06\/slitter111-12x12.jpg 12w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/06\/slitter111-600x600.jpg 600w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2024\/06\/slitter111-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><\/div><p>M\u00eame un mat\u00e9riau r\u00e9sistant et une bonne g\u00e9om\u00e9trie ne peuvent compenser un couteau qui pr\u00e9sente un faux-rond. Dans le refendage par cisaillement, les tol\u00e9rances d\u00e9terminent si le point de coupe reste stable ou s'il \u201c d\u00e9vie \u201d lors de la rotation des couteaux.<\/p><h3 class=\"wp-block-heading\" id=\"a2966727-c73a-44f0-858f-ce5144e432f8\">Runout, concentricity, and face parallelism targets<\/h3><p>Your OEM\u2019s specification is the authority, but these are typical targets many plants use as a starting point for stability. The key is controlling&nbsp;<strong>slitter knife runout<\/strong>&nbsp;so the cutting point doesn\u2019t move as the pair rotates:<\/p><ul><li><strong>Radial\/axial runout (TIR)<\/strong>: keep as low as practical for your speed; tighter targets reduce chatter risk.<\/li>\n\n<li><strong>Concentricit\u00e9<\/strong>: the cutting edge should stay centered to avoid periodic load spikes.<\/li>\n\n<li><strong>Face parallelism<\/strong>: consistent faces help you hold overlap and side load without creating hot spots.<\/li><\/ul><p>If you see burrs that come and go at a fixed interval, treat it as a runout\/concentricity clue before you change overlap.<\/p><p>A practical way to make these targets actionable is to tie them to line speed tiers (example bands below). Use them as&nbsp;<strong>internal control targets<\/strong>&nbsp;unless your OEM specifies otherwise.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><th>Line speed<\/th><th>Typical application<\/th><th>Radial TIR<\/th><th>Axial face parallelism<\/th><th>Concentricit\u00e9<\/th><\/tr><tr><td>Low speed (&lt;150 m\/min)<\/td><td>General paper \/ board<\/td><td>\u22640.03\u20130.05 mm<\/td><td>\u22640.02 mm<\/td><td>\u22640.03\u20130.05 mm<\/td><\/tr><tr><td>Medium speed (150\u2013400 m\/min)<\/td><td>Coated paper \/ film<\/td><td>\u22640.02\u20130.03 mm<\/td><td>\u22640.01\u20130.015 mm<\/td><td>\u22640.02\u20130.03 mm<\/td><\/tr><tr><td>High speed (&gt;400 m\/min)<\/td><td>Film \/ battery \/ precision foil<\/td><td>\u22640.01\u20130.015 mm<\/td><td>\u22640.005\u20130.01 mm<\/td><td>\u22640.01\u20130.02 mm<\/td><\/tr><\/tbody><\/table><\/figure><p><em>Note: these are example control bands. Your knife diameters, holder stiffness, bearing condition, and inspection method (indicator setup) can shift what is achievable. Always follow OEM limits first.<\/em><\/p><h3 class=\"wp-block-heading\" id=\"fbb27c0c-0101-43cf-b27b-a8889a0dd936\">Inspection and traceability: gauges, reports, and regrind records<\/h3><h3 class=\"wp-block-heading\" id=\"bbe786db-98ae-45ea-9311-b3006cb1505c\">Surface finish (roughness) and why it matters<\/h3><p>Surface finish influences friction at the interface, which in turn affects heat generation, dusting, and pickup tendency (especially on coated grades and adhesive label stock). As a rule:&nbsp;<strong>improve geometry stability first<\/strong>, then use finish as a friction-control lever.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><th>Surface type<\/th><th>Typical recommendation<\/th><\/tr><tr><td>General paper slitting<\/td><td>Ra \u22640.4 \u03bcm<\/td><\/tr><tr><td>Precision foil \/ film<\/td><td>Ra 0.05\u20130.2 \u03bcm<\/td><\/tr><tr><td>High-speed coated materials<\/td><td>Highly polished finish recommended<\/td><\/tr><\/tbody><\/table><\/figure><p>Track what matters for repeatability:<\/p><ul><li>Incoming material certification and heat\/lot records<\/li>\n\n<li>Pre- and post-grind inspection results (runout, face parallelism)<\/li>\n\n<li>Regrind count, removed material, and restored edge geometry<\/li><\/ul><p>MAXTOR METAL supports \u00b5m-level inspection reports, material certificates, and serial-based regrind records, and can build custom OEM replacements from drawings or samples to keep matched knife sets consistent.<\/p><p>Below are simple&nbsp;<strong>templates<\/strong>&nbsp;you can copy into your internal work instructions. Adapt fields and limits to your OEM spec and measurement method.<\/p><p><strong>Example slitter knife QC checklist<\/strong><\/p><figure class=\"wp-block-table\"><table><tbody><tr><th>Inspection item<\/th><th>Target<\/th><th>R\u00e9sultat<\/th><th>Status<\/th><\/tr><tr><td>Radial TIR<\/td><td>\u22640.02 mm<\/td><td>____<\/td><td>PASS \/ FAIL<\/td><\/tr><tr><td>Axial runout<\/td><td>\u22640.01 mm<\/td><td>____<\/td><td>PASS \/ FAIL<\/td><\/tr><tr><td>Face parallelism<\/td><td>\u22640.01 mm<\/td><td>____<\/td><td>PASS \/ FAIL<\/td><\/tr><tr><td>Finition de surface<\/td><td>Ra \u22640.4 \u03bcm<\/td><td>____<\/td><td>PASS \/ FAIL<\/td><\/tr><tr><td>Edge condition<\/td><td>No chips \/ pickup<\/td><td>____<\/td><td>PASS \/ FAIL<\/td><\/tr><tr><td>Thickness tolerance<\/td><td>Within spec<\/td><td>____<\/td><td>PASS \/ FAIL<\/td><\/tr><tr><td>Holder cleanliness<\/td><td>Faire le m\u00e9nage<\/td><td>____<\/td><td>PASS \/ FAIL<\/td><\/tr><tr><td>Torque verified<\/td><td>Oui<\/td><td>____<\/td><td>PASS \/ FAIL<\/td><\/tr><\/tbody><\/table><\/figure><p><strong>Regrind record template<\/strong><\/p><figure class=\"wp-block-table\"><table><tbody><tr><th>Knife ID<\/th><th>Mat\u00e9riau<\/th><th>Original OD<\/th><th>Current OD<\/th><th>nombre de rebroy\u00e9s<\/th><th>Last run length<\/th><th>Observed wear<\/th><\/tr><tr><td>TK-2048<\/td><td>Carbure<\/td><td>220 mm<\/td><td>216 mm<\/td><td>4<\/td><td>28 km<\/td><td>Minor pickup<\/td><\/tr><tr><td>TK-2051<\/td><td>HSS<\/td><td>180 mm<\/td><td>176 mm<\/td><td>3<\/td><td>12 km<\/td><td>Edge rounding<\/td><\/tr><tr><td>TK-2055<\/td><td>Carbure<\/td><td>260 mm<\/td><td>255 mm<\/td><td>5<\/td><td>35 km<\/td><td>Stable<\/td><\/tr><\/tbody><\/table><\/figure><p><strong>Inspection frequency (typical)<\/strong><\/p><figure class=\"wp-block-table\"><table><tbody><tr><th>Inspection type<\/th><th>Typical frequency<\/th><\/tr><tr><td>Visual edge inspection<\/td><td>\u00c0 chaque quart de travail<\/td><\/tr><tr><td>Burr verification<\/td><td>Every roll change<\/td><\/tr><tr><td>TIR verification<\/td><td>Weekly or after knife crash<\/td><\/tr><tr><td>Surface finish check<\/td><td>After regrinding<\/td><\/tr><tr><td>Full dimensional inspection<\/td><td>Every regrind cycle<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\" id=\"5dead195-2e67-415e-bf4e-d14201a7af94\">Finishing and coatings: mirror polish, TiN\/TiAlN\/CrN<\/h3><p>Finishing and coatings should be selected for the failure mode you\u2019re seeing, not as a default upgrade.<\/p><ul><li><strong>Mirror polish<\/strong>\u00a0can reduce friction and help on grades that tend to dust or heat.<\/li>\n\n<li><strong>TiN \/ TiAlN \/ CrN coatings<\/strong>\u00a0can improve wear resistance and reduce galling, but only if the base edge geometry and runout are already under control.<\/li><\/ul><p>If coatings \u201cfail fast,\u201d it\u2019s often a sign of heat, overload, or unstable contact rather than a coating problem.<\/p><h2 class=\"wp-block-heading\" id=\"fcb6b305-2abd-4eda-ab50-452525ae3012\">R\u00e9solution des probl\u00e8mes de bavures, de poussi\u00e8re et de vibrations<\/h2><div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Bottom-slitter-knives-detail11.jpg\" alt=\"R\u00e9solution des probl\u00e8mes de bavures, de poussi\u00e8re et de vibrations\" class=\"wp-image-2960\" style=\"width:508px;height:auto\" srcset=\"https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Bottom-slitter-knives-detail11.jpg 800w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Bottom-slitter-knives-detail11-300x300.jpg 300w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Bottom-slitter-knives-detail11-150x150.jpg 150w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Bottom-slitter-knives-detail11-768x768.jpg 768w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Bottom-slitter-knives-detail11-600x600.jpg 600w, https:\/\/maxtormetal.com\/wp-content\/uploads\/2023\/10\/Bottom-slitter-knives-detail11-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><\/div><p>Troubleshooting is fastest when you change one variable at a time and verify at low speed. DIENES\u2019 overview of common shear slitting problems is a good reminder that dust is often an early indicator of a geometry or setup issue (<em><strong><a href=\"https:\/\/www.dienesusa.com\/6-of-the-most-common-problems-found-in-shear-slitting\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">DIENES: common problems<\/a>)<\/strong><\/em>.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><th>Symptom you see<\/th><th>Most likely root cause (first)<\/th><th>First checks (before changing settings)<\/th><th>Safe, reversible adjustments (one at a time)<\/th><\/tr><tr><td>Dusting \/ fuzzy edges<\/td><td>Cutting point not stable; overlap too high\/low; dull or micro-chipped edge<\/td><td>Check knife damage under magnification; verify holder bearings; verify alignment and runout<\/td><td>Nudge overlap in small steps; increase side load only until stable contact (avoid heat); reduce cant if rubbing\/heat appears<\/td><\/tr><tr><td>Burrs + glazing \/ heat tinting<\/td><td>Excessive side load, too much cant, finish mismatch, or rubbing from misalignment<\/td><td>Check temperature rise; check face parallelism; confirm contact line is progressive (not rubbing across full width)<\/td><td>Reduce side load first; then reduce cant slightly; verify overlap is not excessive; consider polish\/coating only after geometry is stable<\/td><\/tr><tr><td>Chatter \/ vibration (especially at speed)<\/td><td>Runout, stack-up looseness, holder stiffness\/resonance<\/td><td>Check spacers\/stack tightness; re-check radial\/axial runout; inspect shafts and bearings<\/td><td>Reduce side load; back down speed to confirm resonance; correct runout\/stack-up before increasing overlap or cant<\/td><\/tr><\/tbody><\/table><\/figure><p><em>Tip: if edge quality varies cyclically (good\u2013bad\u2013good at a fixed interval), treat it as a runout\/concentricity\/stack-up clue before changing overlap or pressure.<\/em><\/p><h3 class=\"wp-block-heading\" id=\"795b6028-1521-4833-9e77-ef97c614e816\">Dusting and fuzzy edges: overlap, side load, and edge sharpness<\/h3><p>If you see dusting or a fuzzy edge, start with the cutting point and contact stability:<\/p><ul><li>Reduce overlap slightly if fibers are being torn rather than sheared.<\/li>\n\n<li>Increase side load only until contact is stable; avoid crushing the interface.<\/li>\n\n<li>Inspect edge sharpness and micro-chipping; a \u201csharp-looking\u201d edge can still be damaged at the micro level.<\/li><\/ul><p>Also check holder bearings and shaft rigidity before chasing parameter changes.<\/p><h3 class=\"wp-block-heading\" id=\"6afac036-a500-4097-b743-81ddf28158b5\">Burrs and glazing: cant angle, heat, and finish mismatch<\/h3><p>Burrs and glazing often show up together when the interface runs hot.<\/p><ul><li>Add or refine cant angle only in small steps to get a progressive cut.<\/li>\n\n<li>Reduce side load if you see heat tinting, glazing, or rapid edge rounding.<\/li>\n\n<li>Match finish\/coating to the grade: a rougher finish can increase friction on sensitive coatings and make glazing more likely.<\/li><\/ul><h3 class=\"wp-block-heading\" id=\"d3d1e44f-e8d3-4456-97f3-590caef41be9\">Chatter and vibration: alignment, runout, and holder stability<\/h3><p>Chatter is typically a system stiffness problem first, and a knife problem second.<\/p><ul><li>Verify alignment and stack-up: loose spacers and unstable holders create periodic vibration.<\/li>\n\n<li>Re-check runout before increasing side load.<\/li>\n\n<li>If vibration starts only at higher speed, step back and confirm the holders can support the new speed without resonance.<\/li><\/ul><h2 class=\"wp-block-heading\" id=\"a3975f0c-c60a-479b-9a89-d4b09d5b0f5e\">Conclusion<\/h2><ul><li>Standardize parameters by grade and document verified settings<\/li>\n\n<li>Select materials\/geometries to match speed, grade, and uptime goals<\/li>\n\n<li>Inspect tolerances, finish, and track regrinds to extend tool life<\/li><\/ul><h2 class=\"wp-block-heading\" id=\"500d4d00-a94b-4135-9394-8ebe4dc5a755\">R\u00e9f\u00e9rences (s\u00e9lectionn\u00e9es)<\/h2><ul><li>DIENES: Dust generation caused by the shear angle, cutting point and the geometry of the knife and system \u2014\u00a0<a href=\"https:\/\/www.dienesusa.com\/dust-generation-caused-by-the-shear-angle-cutting-point-and-the-geometry-of-the-knife-and-system\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\"><em><strong>https:\/\/www.dienesusa.com\/dust-generation-caused-by-the-shear-angle-cutting-point-and-the-geometry-of-the-knife-and-system\/<\/strong><\/em><\/a><\/li>\n\n<li>Valmet: Slitter adjustments (positioning checks and systematic verification) \u2014\u00a0<a href=\"https:\/\/www.valmet.com\/insights\/articles\/up-and-running\/performance\/SlitterAdjustments\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\"><strong><em>https:\/\/www.valmet.com\/insights\/articles\/up-and-running\/performance\/SlitterAdjustments\/<\/em><\/strong><\/a><\/li>\n\n<li>Carolina Knife:\u00a0<em>Principles of shear slitting<\/em>\u00a0(definitions of overlap\/penetration and typical side load ranges) \u2014\u00a0<a href=\"https:\/\/www.carolinaknife.com\/wp-content\/uploads\/2020\/07\/Principles_of_shear_splitting-1.pdf\" target=\"_blank\" rel=\"noreferrer noopener nofollow\"><strong><em>https:\/\/www.carolinaknife.com\/wp-content\/uploads\/2020\/07\/Principles_of_shear_splitting-1.pdf<\/em><\/strong><\/a><\/li><\/ul><h2 class=\"wp-block-heading\" id=\"d459d63d-be33-433b-b551-431a11093285\">\u00c0 propos de l'auteur<\/h2><p><strong>Nancy Wu<\/strong>&nbsp;\u2014 Senior Manufacturing Engineer, Production Engineering (PE). 12 years of experience in industrial blade manufacturing and grinding, with deep familiarity in D2, M2, H13, PM steels, and carbide processing and coating behavior. Skilled in high-precision CNC grinding programming.<\/p><p>Certifications: SME\u2013CMfgE, PMP, Six Sigma Black Belt, ASM International Certifications.<\/p><h2 class=\"wp-block-heading\" id=\"239ad33a-dfc6-44a3-bde4-2901d403984a\">FAQ<\/h2><h3 class=\"wp-block-heading\" id=\"4ce15eef-6114-4c03-a112-6ae645d2d6b7\">What causes burrs in paper shear slitting?<\/h3><p>Burrs usually come from an unstable cutting point: too much overlap, excessive side load, incorrect cant angle, or runout that moves the shear interface. Start by verifying alignment and runout, then adjust overlap and cant in small steps.<\/p><h3 class=\"wp-block-heading\" id=\"696003b5-057a-4626-9776-bfe80e2ffce7\">How do I set overlap and side load for tissue vs. paperboard?<\/h3><p>Start conservatively for tissue (low overlap and side load to avoid tearing) and increase both for paperboard only as the holder stack-up allows. Always validate at low speed and document the stable window for each grade.<\/p><h3 class=\"wp-block-heading\" id=\"d4d8603c-0dd1-4acd-aced-4551a8f2624f\">What is cant angle (toe-in) and how does it affect dusting?<\/h3><p>Cant angle makes the cut progressive across the web. Too little cant can increase tearing and dusting on some grades; too much can drive heat and uneven wear. Tune cant after overlap and side load are stable.<\/p><h3 class=\"wp-block-heading\" id=\"f60f12ce-3e1b-4997-86f8-b8173c37e5f4\">When should I choose a dished bottom circular knife instead of a flat one?<\/h3><p>Choose dished bottoms when you need a more forgiving contact line at higher speeds or on thinner webs, especially if small alignment variation is hard to eliminate. Flat bottoms work well when holders and shafts are rigid and runout is tightly controlled.<\/p><h3 class=\"wp-block-heading\" id=\"73b3b50c-291c-4f2d-95ea-348740bd07e5\">Which material is best for bottom circular knives: D2, HSS, PM-HSS, or carbide?<\/h3><p>There isn\u2019t one best material. D2 is a common baseline; HSS\/PM-HSS can handle heat and wear more consistently; carbide offers strong wear resistance but needs tighter runout control to avoid chipping. Match the material to your dominant wear mode and holder stability.<\/p><h3 class=\"wp-block-heading\" id=\"678a83ac-4a1a-493f-bf8c-f1cd44810d33\">What tolerances matter most for burr-free slits?<\/h3><p>Runout (axial and radial), concentricity, and face parallelism matter most because they keep the cutting point stable. If edge quality varies cyclically, treat it as a tolerance\/holder issue before changing overlap.<\/p><h3 class=\"wp-block-heading\" id=\"661f28c2-dbc4-416c-8026-892d0a43b993\">How do I reduce dust without overloading the knives?<\/h3><p>Verify the cutting point first: correct alignment, minimal runout, and a sharp, undamaged edge. Then tune overlap and side load in small increments, and keep cant angle only as high as needed for a progressive cut.<\/p>","protected":false},"excerpt":{"rendered":"<p>Last updated:&nbsp;2026-05-12 Note:&nbsp;Always verify knife geometry, overlap\/pressure, and safety procedures against your OEM slitter manual and holder design. The ranges below are starting points and must be validated on your line at low speed before running production. Shear slitting fundamentals Shear slitting is a controlled \u201cscissor cut\u201d between a top knife and a bottom knife. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7186,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,1209],"tags":[1230],"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>Bottom circular knives that pair with top knives for burr-free slits - Maxtor Metal | Custom Industrial Blade Manufacturer &amp; Supplier<\/title>\n<meta name=\"description\" content=\"Learn to pair top and bottom circular knives for burr-free slits: setup ranges by paper grade, selection criteria, QC tolerances, and fixes.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/maxtormetal.com\/fr\/bottom-circular-knives-that-pair-with-top-knives-for-burr-free-slits\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bottom circular knives that pair with top knives for burr-free slits\" \/>\n<meta property=\"og:description\" content=\"Learn to pair top and bottom circular knives for burr-free slits: setup ranges by paper grade, selection criteria, QC tolerances, and fixes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/maxtormetal.com\/fr\/bottom-circular-knives-that-pair-with-top-knives-for-burr-free-slits\/\" \/>\n<meta property=\"og:site_name\" content=\"Maxtor Metal | Custom Industrial Blade Manufacturer &amp; 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