C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
C21D 8/02 (2006.01) B21B 1/28 (2006.01) B21D 31/00 (2006.01)
Patent
CA 2174605
The invention relates to a method of working a hot-rolled stainless steel strip, particularly an austenitic stainless strip, with the intention of reducing the thickness and enhancing the mechanical strength of the strip. The method is characterized by - cold-rolling the hot-rolled strip with at least a 10% thickness reduction to a thickness which is at least 2% and at most 10% greater than the intended final thickness of the finished product; - annealing the thus cold-rolled strip at a temperature of between 1,050°C and 1,250°C; and - cold-stretching the strip after the annealing process so as to plasticize and permanently elongate the strip and therewith reducing its thickness by 2-10%.
Herre Christer
Ljungars Sten
Avesta Sheffield Aktiebolag
Avestapolarit Aktiebolag (publ)
Fetherstonhaugh & Co.
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