Causes and Prevention of Edge Cracking in Steel Coils

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Effects of hot-rolled edge defects, cold-rolling reduction, and slitting process on edge cracking.

Common causes of edge cracking:

1) Hot-rolled edge temperature too low or edge defects not trimmed, which propagate during cold rolling.
2) Total cold-rolling reduction too large, or improper pass distribution.
3) Improper slitting tool clearance, or microcracks already present at the incoming strip edges.
4) Excessive coiling tension causing stress concentration at the edges.

Prevention: require the steel mill to trim edges cleanly, control the cold-rolling reduction schedule, and inspect edge quality before slitting; when edge cracking is found, trace the heat number and rolling records.

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。

Causes and Prevention of Edge Cracking in Steel Coils

Effects of hot-rolled edge defects, cold-rolling reduction, and slitting process on edge cracking.

Common causes of edge cracking:

1) Hot-rolled edge temperature too low or edge defects not trimmed, which propagate during cold rolling.
2) Total cold-rolling reduction too large, or improper pass distribution.
3) Improper slitting tool clearance, or microcracks already present at the incoming strip edges.
4) Excessive coiling tension causing stress concentration at the edges.

Prevention: require the steel mill to trim edges cleanly, control the cold-rolling reduction schedule, and inspect edge quality before slitting; when edge cracking is found, trace the heat number and rolling records.

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。