Patent ID: 6503339
Filing Date: 2003-01-07
Classification: B21B,C21D,C22C

Abstract:
A method to produce hot-strip from casting in slabs, thin slabs, or strip made of a steel with (in mass %):0.001 to 0.1% C 0.05 to 3.0% Si up to 0.85% Al with Si+2 Al&lE;3.0% 0.05 to 2.0% Mn, the balance being substantially iron, impurities and alloying additions of P, Sn, N, Ni, Co, Ti, Nb, Zr, V, B, Sb up to a total of 1.5% comprising: hot rolling the steel slabs, the thin slabs or the strips either directly from casting heat or after a renew heating to T&gE;900Â° C.; and performing two or more metal forming passes in a two-phase region austenite/ferrite in a course of a finishing rolling step to produce the hot strip.