C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/48
C21D 1/18 (2006.01) C21D 1/26 (2006.01) C21D 8/02 (2006.01) C21D 9/46 (2006.01) C21D 9/52 (2006.01)
Patent
CA 1109371
A B S T R A C T In a continuous heat-treatment process, cold-rolled steel strip having a thickness of 0.05 to 1 mm, e.g. for producing tin plate, is heated to 650-850°C and held in this temperature range for more than 1s. The strip is then quenched for less than 12 seconds in an aqueous bath at above 75 C, the strip emerging at below 550°C. Temperatures, times, and subsequent steps such as over- aging and final cooling are chosen depending on the hard- ness desired.
303884
Centre de Recherches Metallurgiques-Centrum Voor Research In de
Marks & Clerk
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