Process for producing deep-drawing cold rolled steel strip by co

Details Process for producing deep-drawing cold rolled steel strip by co Process for producing deep-drawing cold rolled steel strip by co

1981-10-15

1983-08-09

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

75123B, 148 36, C21D 804

Patent

active

043976999

ABSTRACT:
Process for producing a deep-drawing cold rolled steel strip by continuous annealing which comprises hot rolling a steel containing not more than 0.06% C, not more than 0.40% Mn, 0.0005 to 0.0020% B, the ratio of B/N being in the range from 0.5 to 1.5 and the balance being iron and unavoidable impurities, coiling the hot rolled steel strip at a temperature not higher than 680.degree. C., cold rolling and continuously annealing the hot rolled strip.
The process produces super deep-drawing cold rolled steel strips without overageing treatment.

REFERENCES:
patent: 3725143 (1973-04-01), Alworth et al.
patent: 3912549 (1975-10-01), Gondo et al.
patent: 3950191 (1976-04-01), Ito et al.
patent: 3988173 (1976-10-01), Kawano
patent: 3988174 (1976-10-01), Kawano
patent: 4001052 (1977-01-01), Nakazato et al.
patent: 4145235 (1979-03-01), Gondo et al.
patent: 4315783 (1982-02-01), Akisue et al.

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