Cut-to-length and slitting: from mother coil to sheet and slit coil

ARTICLE

👁 1

⏱ 阅读约 2 分钟

cut-to-length · slitting · processing · burr · flatness

Cut-to-length lines produce fixed-length sheet; slitting lines cut wide coil into narrow coils. Control tension, levelling, knife clearance, burr and surface protection.

Downstream processing of stainless coil mainly involves cut-to-length (CTL) and slitting:

1) CTL: uncoil → level → cut to length → stack. Key controls: leveller settings (remove waviness/crossbow), length accuracy, shear burr, surface protection (interleaving paper/film).
2) Slitting: uncoil → rotary slitting → recoil. Key controls: knife clearance (typically 5%–8% of thickness), knife condition, tension and alignment, burr control, edge quality.
3) Shared concerns: incoming flatness and thickness tolerance, surface scratches, coiling tension, packaging and marking.

Suggested quality requirements:

• Length tolerance and diagonal difference for cut sheet.
• Width tolerance and maximum burr height for slit coil.
• Flatness and edge quality.
• Surface grade and permitted defects.
• Packaging (moisture and scratch protection) and marking (coil/heat/size).

CTL and slitting amplify defects: poor incoming flatness or wrong knife clearance shows up more clearly in the finished product, so inspect both incoming material and process parameters.

本文由 SteelWe 编辑与行业专家整理，内容仅供行业交流参考，不构成交易或投资建议。引用请注明来源。

Cut-to-length and slitting: from mother coil to sheet and slit coil

Cut-to-length lines produce fixed-length sheet; slitting lines cut wide coil into narrow coils. Control tension, levelling, knife clearance, burr and surface protection.

Downstream processing of stainless coil mainly involves cut-to-length (CTL) and slitting:

1) CTL: uncoil → level → cut to length → stack. Key controls: leveller settings (remove waviness/crossbow), length accuracy, shear burr, surface protection (interleaving paper/film).
2) Slitting: uncoil → rotary slitting → recoil. Key controls: knife clearance (typically 5%–8% of thickness), knife condition, tension and alignment, burr control, edge quality.
3) Shared concerns: incoming flatness and thickness tolerance, surface scratches, coiling tension, packaging and marking.

Suggested quality requirements:

• Length tolerance and diagonal difference for cut sheet.
• Width tolerance and maximum burr height for slit coil.
• Flatness and edge quality.
• Surface grade and permitted defects.
• Packaging (moisture and scratch protection) and marking (coil/heat/size).

CTL and slitting amplify defects: poor incoming flatness or wrong knife clearance shows up more clearly in the finished product, so inspect both incoming material and process parameters.

本文由 SteelWe 编辑与行业专家整理，内容仅供行业交流参考，不构成交易或投资建议。引用请注明来源。