Process for carburizing ferrous metals

Details Process for carburizing ferrous metals Process for carburizing ferrous metals

1980-04-22

1981-12-22

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 166, 148 203, C21D 148

Patent

active

043069185

ABSTRACT:
A process for carburizing steel in a furnace under an atmosphere derived from the decomposition of an oxygenated hydrocarbon containing up to three carbon atoms, no more than one carbon to carbon bond, and a carbon to oxygen ratio of from 1 to 2 such as alcohols, aldehydes, ethers, esters and mixtures thereof. The oxygenated hydrocarbon injected into the furnace produces an atmosphere under which an initial rapid stage of carburization takes place. After the initial rapid stage of carburization gaseous nitrogen is blended into the oxygenated hydrocarbon atmosphere throughout the remainder of the process with a concurrent reduction in the rate of injection of oxygenated hydrocarbon while maintaining volumetric flow through the furnace during the entire carburizing cycle. During the entire carburizing cycle, the carbon potential of the furnace atmosphere can be controlled by addition of a hydrocarbon gas enriching or carburizing agent.

REFERENCES:
patent: 2673821 (1954-03-01), Stutzman
patent: 3201290 (1965-08-01), Wyss
patent: 4049472 (1977-09-01), Arndt
patent: 4145232 (1979-03-01), Solomon
patent: 4154629 (1979-05-01), Asai et al.

Affiliated with

Also associated with

Rating

Process for carburizing ferrous metals 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 carburizing ferrous metals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for carburizing ferrous metals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2366366