Method for manufacturing camshaft

Details Method for manufacturing camshaft Method for manufacturing camshaft

1985-01-02

1986-06-17

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making composite or hollow article

419 5, 419 6, 419 46, 419 54, 419 55, 74567, B22F 700

Patent

active

045955565

ABSTRACT:
A composite camshaft having a plurality of ferrous fitting members, such as cam lobes and journals, firmly bonded to a steel shaft by sintering in the presence of a liquid phase. The fitting members are fabricated as a green compact from metal powders and pre-sintered to axially shrink the compact by one-half a preselected allowance of shrinkage. Thereafter the pre-sintered fitting members are fitted on the shaft and sintered to axially shrink the compact by the remaining allowance of shrinkage and metallurgically join the shaft.

REFERENCES:
patent: 4236923 (1980-12-01), Takahashi et al.
patent: 4503009 (1985-03-01), Asaka

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