Process for manufacturing high-strength parts of an automobile t

Details Process for manufacturing high-strength parts of an automobile t Process for manufacturing high-strength parts of an automobile t

1990-06-19

1992-03-24

Dean, R.

Metal treatment

Compositions

Heat treating

148 127R, 148 12F, C21D 802

Patent

active

050984896

ABSTRACT:
Steel containing, on a weight percent basis, 0.01 to 0.15% of carbon, 0.05 to 0.50% of silicon, 0.20 to 1.0% of manganese, 0.01 to 0.1% of aluminum, 0.3 to 2.0% of copper, 0.1 to 2.0% of nickel, 0.015 to 0.1% of niobium and 0.0005 to 0.0050% of calcium, the balance of its composition being iron and unavoidable impurities, is heated to a temperature of 1100.degree. C. to 1250.degree. C., and hot rolled. The hot-rolled steel is coiled at a temperature of 350.degree. C. to 500.degree. C. to prepare a hot-rolled steel sheet having a tensile strength not exceeding 65 kgf/mm.sup.2. The sheet is cold worked until a working strain of at least 15% is set up. The cold-worked product is heated at a temperature of 400.degree. C. to 550.degree. C. for 0.5 to three hours to yield a part having a tensile strength of at least 80 kgf/mm.sup.2 for an automobile, particularly its automatic transmission system.

REFERENCES:
patent: 3947293 (1976-03-01), Takechi et al.

Affiliated with

Also associated with

Rating

Process for manufacturing high-strength parts of an automobile t 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 manufacturing high-strength parts of an automobile t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for manufacturing high-strength parts of an automobile t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2007165