Process for the improved heat treatment of steels using direct e

Details Process for the improved heat treatment of steels using direct e Process for the improved heat treatment of steels using direct e

1980-12-10

1983-09-13

Skiff, Peter K.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148150, 148154, C21D 140

Patent

active

044040474

ABSTRACT:
A process for the energy efficient heat treatment of steels wherein a steel workpiece is rapidly heated to a temperature above the A.sub.3 temperature of the steel to convert the steel to austenite, the workpiece is then rapidly quenched in a liquid quench medium to convert the austenite to a predominantly martensitic microstructure, and the steel is then tempered by rapid heating while the workpiece is under tension, the tempering serving to convert the steel to a tempered martensitic form. The present invention virtually eliminates the problem of quench cracking and minimizes quench distortion as well as providing a finished product with improved uniformity, improved surface quality, and improved mechanical properties.

REFERENCES:
patent: 3532560 (1970-10-01), Tomioka et al.
patent: 3699797 (1972-10-01), Tournoy
patent: 3847002 (1974-11-01), Suzuki et al.
patent: 3929524 (1975-12-01), Filatov et al.
patent: 4252578 (1981-02-01), Dumont et al.
patent: 4321098 (1982-03-01), Hayden

Affiliated with

Also associated with

Rating

Process for the improved heat treatment of steels using direct e 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 the improved heat treatment of steels using direct e, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the improved heat treatment of steels using direct e will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1728594