Apparatus for controlling the gas carburization of steel

Details Apparatus for controlling the gas carburization of steel Apparatus for controlling the gas carburization of steel

1985-03-22

1986-05-27

Brody, Christopher W.

Metallurgical apparatus

With control means responsive to sensed condition

With analyzer or computation means

266 81, 266 87, 266 90, C21D 1100

Patent

active

045911320

ABSTRACT:
In the gas carburization of steel, a steel part is exposed in a carbon-enriched atmosphere of a furnace to a diffusion process to form a boundary layer with an increased carbon content, determined as a function of the distance from the surface. The values of importance for the diffusion process are determined intermittently and used as control parameters to affect the diffusion process. The flow of carbon diffusing directly through the surface of the steel part serves as the measured value. The supply of the carburizing gas is controlled as a function of this value.

REFERENCES:
patent: 2980415 (1961-04-01), Beard
patent: 4035203 (1977-07-01), Hermite et al.
patent: 4049473 (1977-09-01), Davis et al.
Article, Stahl und Eisen 80 (1960, No. 26, pp. 1952-1954).
Article, Zeitschrift fur Wirtschaftliche Fertigung, No. 9, Sep. 1968, pp. 456-464.

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