Cyanide-free carburizing process and composition

Details Cyanide-free carburizing process and composition Cyanide-free carburizing process and composition

1977-07-05

1979-05-08

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 19, 148 20, 148 27, 148 29, C21D 148

Patent

active

041534816

ABSTRACT:
A cyanide-free molten salt carburizing process and composition comprising an alkali metal salt bath having a cover of finely divided graphite particles in a size range of about 100 mesh to about 300 mesh. The bath is operated in the temperature range of about 1550.degree. F. to 1900.degree. F. and is provided with mechanical agitation to produce entrainment of air through the surface cover and sufficient mobility of carbon monoxide coated graphite particles to produce carbon diffusion by contact into the surface of the parts immersed in the bath. Total graphite content is between about 11/2% to about 7% of the active portion of the bath. The graphite is preferably of the synthetic type so as to produce an ash content below about 1%.

REFERENCES:
patent: 1796248 (1931-03-01), Freudenberg
patent: 2568860 (1951-09-01), Leininger et al.

Affiliated with

Also associated with

Rating

Cyanide-free carburizing process and composition does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cyanide-free carburizing process and composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyanide-free carburizing process and composition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1232282