Method of manufacturing a camshaft

Details Method of manufacturing a camshaft Method of manufacturing a camshaft

1996-04-10

1998-07-14

Cuda, Irene

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

420 31, B23P 1560

Patent

active

057785309

ABSTRACT:
A camshaft made of cast iron containing at least one element selected from the group consisting of Bi, Te, Se, As, Sb and Sn in a total amount of 0.0001 to 0.1 weight %, preferably, 0.001 to 0.1 weight %. The cast iron may further contain at least one elements selected from the group consisting of Ni, Cu and Co in an amount of 0.2 to 5.0 weight %. Furthermore, in the camshaft of the present invention, a carbide area ratio at the sliding surface of the cam lobe portion is not less than 40%, the chilled carbide has an average grain diameter of not more than 15 .mu.m, and the sliding surface of the cam lobe portion has a hardness of not less than HRC 53.

REFERENCES:
patent: 4798178 (1989-01-01), Greulich
patent: 5028281 (1991-07-01), Hayes.
patent: 5205187 (1993-04-01), Ebbinghaus
patent: 5230382 (1993-07-01), Swars

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