Method and apparatus for heat treating camshafts

Details Method and apparatus for heat treating camshafts Method and apparatus for heat treating camshafts

1985-05-20

1986-08-05

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1057, 219 1049R, 219 1067, 148147, 148150, 266127, 266129, H05B 640

Patent

active

046045104

ABSTRACT:
A method and apparatus for heat treating camshafts includes a retractable shield positioned between a previously hardened surface and a surface being heat treated. During the induction heating and quenching cycle, a coolant is delivered to the hardened surface to maintain the temperature thereof below the tempering temperature. The shield prevents the coolant from contacting the unhardened surface and interfering with the heating and quenching thereof.

REFERENCES:
patent: 2295777 (1942-09-01), Denneen et al.
patent: 3622138 (1971-11-01), Kostyal
patent: 3784780 (1974-01-01), Laughlin et al.
patent: 3944446 (1976-03-01), Bober
patent: 3967089 (1976-06-01), Seulen et al.
patent: 3986710 (1976-10-01), Day et al.
patent: 4438310 (1984-03-01), Cachat

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