Method of heat treating using eddy current temperature determina

Details Method of heat treating using eddy current temperature determina Method of heat treating using eddy current temperature determina

1986-02-28

1987-06-23

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

266 87, 266 90, C21D 154

Patent

active

046750576

ABSTRACT:
A method and apparatus for the heat treating of quench hardenable ferrous alloy workpieces utilizing periodic eddy current excitation and reflection to determine the in-line cooling rate from the critical temperature of the workpiece material and comparing the in-line cooling rate against a standard rate for establishing acceptance or rejection of the quenched workpiece.

REFERENCES:
patent: 3756870 (1973-09-01), Kasper et al.
patent: 4059795 (1980-10-01), Mordwinkin
patent: 4230987 (1979-02-01), Mordwinkin
patent: 4359210 (1982-11-01), Peterson
patent: 4427463 (1984-01-01), Spies

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