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Article | REF: M7955 V1

Continuous annealing

Author: Charles BRUN

Publication date: December 10, 1996

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4. The future of continuous annealing

4.1 Surface quality and flatness of continuously annealed steels

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4.1.1 Surface defects

Continuous annealing eliminates the need for separate operations, thus eliminating a large number of handling operations. These handling operations, difficult to avoid in coil annealing, are the source of defects (scratches, bumps).

During coil annealing, the prolonged contact between the windings at high temperature can lead to the formation of micro-welds. When unwound after annealing, these micro-welds...

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