Process for the low pressure carburization of metal alloy parts

Details Process for the low pressure carburization of metal alloy parts Process for the low pressure carburization of metal alloy parts

1991-07-01

1993-04-27

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148216, 148223, C21D 900

Patent

active

052058735

ABSTRACT:
A low pressure carburization process for metal alloy parts uses a fuel mixture consisting of hydrogen with 2 to 60% by volume ethylene. The fuel mixture is heated to a temperature between 820.degree. and 1100.degree. C. A furnace installation for carrying out the process includes a double vacuum tank or vessel arrangement with internal carburizing gas distribution, an annular space surrounding the vessel, a cover, thermocouples and a microcomputer control arrangement.

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patent: 4836684 (1989-06-01), Murakami et al.
Chemical Abstracts, vol. 97, No. 14, Oct. 1982, p. 212, Abstract No. 113319g, Columbus, Ohio; J. H. Kaspersma et al.
Chemical Abstracts, vol. 91, No. 18, Oct. 1979, p. 218, Abstract No. 144330j, Columbus, Ohio; V. S. Krylov et al.
Advanced Materials & Processes, vol. 137, No. 3, Mar. 1990, pp. 41-44, 47-48, Materials Park, Ohio, E. J. Kubel, Jr., et al.

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