Process for improving the cold formability of heat-treatable...

Details Process for improving the cold formability of heat-treatable... Process for improving the cold formability of heat-treatable...

C - Chemistry, Metallurgy

21

D

148/50.2

C21D 1/18 (2006.01) C21D 1/25 (2006.01) C21D 1/26 (2006.01) C21D 1/32 (2006.01) C21D 8/00 (2006.01)

Patent

CA 2026307

29.08.1990 - 1 - WE/Su 89/308 Z2 Abstract The invention relates to a process for improving the cold formability of hot rolled or cold rolled heat-treatable steels. The characterizing feature of the invention is that with a composition of (in % by weight) 0.32 - 0.54 % C 0.05 - 0.40 % Mn 0.41 - 1.5 % Si 0.02 - 0.15 % Al maximum 0.05 % Cr maximum 0.05 % S maximum 0.03 % P maximum 0.02 % N residue iron and unavoidable impurities prior to the final cold forming and quench hardening with subsequent tempering is performed for at least 15 hours at temperatures between 620 and 680 C to substantially complete graphitization, while with a composition of 0.55 - 1.3 % C 0.20 - 0.30 % Mn 0.41 -- 0.90 % Si 0.02 - 0.15 % Al maximum 0.05 % Cr maximum 0.010 % S -2- maximum 0.03 % P maximum 0.02 % N residue iron and unavoidable impurities said annealing lasts for at least 8 hours.

Affiliated with

Also associated with

Rating

Process for improving the cold formability of heat-treatable... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for improving the cold formability of heat-treatable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for improving the cold formability of heat-treatable... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1912807