Method for control of the carburization of parts in a vacuum fur

Details Method for control of the carburization of parts in a vacuum fur Method for control of the carburization of parts in a vacuum fur

1977-08-08

1979-09-18

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 203, C21D 156

Patent

active

041681860

ABSTRACT:
A method and apparatus for the control of the carburizing of parts under vacuum in a vacuum furnace, with which as a carbon carrier a hydrocarbon gas is introduced controlled in the furance. As the control quantity a soot mist formation is used in such a manner that the occurrence of the soot mist is determined, that upon the occurrence of the soot mist the hydrocarbon addition is completely or partially interrupted, and that the hydrocarbon addition is again received if the soot mist formation has dampened out.

REFERENCES:
patent: 3693409 (1972-09-01), Yamagishi
patent: 4035203 (1977-07-01), L'Hermite et al.
Metals Handbook, 8th ed., vol. 2, Heat Treating, Cleaning and Finishing, ASM, 1964.

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