Method for minimizing surface carbide formation during box annea

Details Method for minimizing surface carbide formation during box annea Method for minimizing surface carbide formation during box annea

1990-07-20

1992-04-21

Woo, Jay H.

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148256, C23C 800

Patent

active

051064359

ABSTRACT:
A method for minimizing surface carbide formation during box annealing of DQSK steels includes as a first step treating the surface of an aluminum-killed steel suitable for production of DQSK product with an aqueous solution containing about 0.1 to 1.0 moles of phosphate ion per liter. This treatment is applied to provide a surface phosphorus concentration on the steel of at least about 10 mg P/ft.sup.2. The treated steel is then box annealed at a temperature of at least about 1250.degree. F. in a hydrogen-rich atmosphere which is non-oxidizing to steel.

REFERENCES:
patent: 2501846 (1950-03-01), Gifford
patent: 2748037 (1956-05-01), Burnham
patent: 3104993 (1963-09-01), Slevert et al.
patent: 3308042 (1967-03-01), Lozano et al.
patent: 3382110 (1968-05-01), Lozano et al.
W. H. McFarland, "Surface Carbides in Batch Annealed Cold Rolled Steel", 1988 Mechanical Working and Steel Processing Proceedings, pp. 155 through 162, Oct. 23-26, 1988.

Affiliated with

Also associated with

Rating

Method for minimizing surface carbide formation during box annea 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 for minimizing surface carbide formation during box annea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for minimizing surface carbide formation during box annea will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1583382