Method of producing a camshaft

Details Method of producing a camshaft Method of producing a camshaft

1985-05-06

1987-03-24

Albritton, C. L.

Electric heating

Metal heating

By arc

219121LF, 219121EG, B23K 2600, B23K 1500

Patent

active

046527249

ABSTRACT:
A method of producing a cast iron camshaft including the steps of applying a high-density energy source, such as a TIG arc, a laser beam, and an electron beam over the entire sliding surface of a cam to melt the surface portion and cooling the cam by dissipating the localized heat through the camshaft itself so as to form a double structure hardened layer consisting of a chilled layer having a large amount of cementite and a hardened layer of martensite. This method omits the preheating of the camshaft prior to the high-density energy irradiation.

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