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Intermediate cold rolling

The use of an intermediate cold rolling step between hot dipping with Al-Si and diffusion annealing, to produce a near final thickness strip with increased Si content. The surface finish after dipping is also improved.

Advantages result in the:
- Magnetic properties
- Flatter strip
- Reduced coating thickness and increased uniformity therefore more consistent properties ad easier pickling.
- Removal of need for cold rolling to final thickness in the potentially brittle high Si state post diffusion annealing.

Informations connexes

Reported by

THYSSENKRUPP ELECTRICAL STEEL GMBH
Castroper Strasse 228
44791 BOCHUM
Germany
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