Method of producing a cold rolled steel sheet having a good agei

Details Method of producing a cold rolled steel sheet having a good agei Method of producing a cold rolled steel sheet having a good agei

1988-02-23

1990-03-13

Yee, Deborah

Metal treatment

Compositions

Heat treating

148 12F, 148134, C21D 948

Patent

active

049080733

ABSTRACT:
The present invention relates to the production of a cold rolled steel sheet having good ageing resistance and small anisotropy and adapted for deep drawing, which properties can satisfy concurrently the demands for the deep drawability and ageing resistance of the cold rolled steel sheet to be pressed and used for automotive exterior plate. The present invention has concurrently and satisfactorily solved the problems in the above described good ageing resistance and anisotropy, which problems had not hitherto been solved in the conventional method, by a method wherein a cold rolled steel sheet having such a limited composition that contains not more than 0.004% of C, 0.002-0.010% of a total amount of at least one element selected from Nb, Ti, V, Zr and W, and further occasionally contains not more than 0.0050% of B, is subjected to a continuous annealing at a temperature within the range of 700-950.degree. C. in the production of the cold rolled steel sheet according to the conventional method. The steel sheet obtained in the present invention can be advantageously used as a thin steel sheet adapted to be pressed, for example, into an automotive exterior plate.

REFERENCES:
patent: 4315783 (1982-02-01), Akisue et al.
patent: 4331488 (1982-05-01), Sudo et al.
patent: 4336080 (1982-06-01), Nakaoka et al.
patent: 4339284 (1982-07-01), Hashimoto et al.
patent: 4368084 (1983-01-01), Irie et al.

Affiliated with

Also associated with

Rating

Method of producing a cold rolled steel sheet having a good agei does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing a cold rolled steel sheet having a good agei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing a cold rolled steel sheet having a good agei will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-49314