Method of monitoring a heat treatment with carbon penetration

Details Method of monitoring a heat treatment with carbon penetration Method of monitoring a heat treatment with carbon penetration

1991-08-16

1993-03-02

Kastler, Scott

Metal treatment

Process of modifying or maintaining internal physical...

With measuring, testing, or sensing

266 81, C21B 724, C21D 1100

Patent

active

051906007

ABSTRACT:
A probe (14) comprises a tubular electrical conductor (15) supported by a sleeve of insulating material (16). The two ends of the conductor are connected to couplings (23, 24) for the circulation of a reducing gas through the entire length of the conductor, as well as to an electric circuit (20) kept at a constant voltage and hence permitting measurement of the resistance in a segment (15c) of the conductor which is exposed to the atmosphere of a furnace, the resistivity of the segment varying as a function of the carbon content of the wall of the conductor.

REFERENCES:
patent: 2811037 (1957-10-01), Beard
patent: 3011873 (1961-12-01), Davis, II

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