Method for producing cold-rolled steel sheet

Details Method for producing cold-rolled steel sheet Method for producing cold-rolled steel sheet

1988-10-17

1992-01-07

Yee, Deborah

Metal treatment

Compositions

Heat treating

148 123, 148 12F, C21D 948

Patent

active

050788094

ABSTRACT:
A method for producing cold-rolled steel sheets which comprises the steps of: producing slabs containing 0.001-0.003 wt. % C, 0.004 wt. % or less N and 0.03-0.20 wt. % P, providing that P(wt. %).times.N(wt. %).ltoreq.3.times.10.sup.-4 wt. % is satisfied; hot-rolling the slabs into hot-rolled steel strips; cold-rolling the hot-rolled steel strips at 60-95% reduction ratio into cold-rolled steel strips; and annealing continuously the cold-rolled strips at temperature of recrystallization temperature to Ac.sub.3 transformation point temperature. The slabs further include 0.0005-0.0030 wt. % B. The hot-rolling is performed at finishing temperature ranging Ar.sub.3 transfromation point to Ar.sub.3 transformation +100.degree. C., at cooling temperature of 750.degree. C. and less.

REFERENCES:
patent: 3826692 (1974-07-01), Kinoshita
patent: 3879232 (1975-04-01), Gondo et al.
patent: 3897280 (1975-07-01), Gondo et al.
patent: 3988174 (1976-10-01), Kawano
patent: 4001052 (1977-01-01), Nakazato et al.
patent: 4040873 (1977-08-01), Nakaoka et al.
patent: 4145235 (1979-03-01), Gondo et al.
patent: 4410372 (1983-10-01), Takahashi et al.
patent: 4445946 (1984-05-01), Takahashi et al.
patent: 4496400 (1985-01-01), Irie et al.
patent: 4576656 (1986-03-01), Satoh et al.
patent: 4576657 (1986-03-01), Satoh et al.
patent: 4676844 (1987-06-01), Satoh et al.

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