Bonded valve seat and method

Details Bonded valve seat and method Bonded valve seat and method

1997-02-25

1999-01-19

McMahon, Marguerite

Internal-combustion engines

Valve

Valve seat relation

C23C 2802, F16K 142

Patent

active

058604014

ABSTRACT:
An improved method of metallurgically bonding two dissimilar materials to form, for example, a valve seat for an internal combustion engine. The bonding process is coupled by pressing pressure and the application of heat. The process is controlled so that the temperature of the lower melting point material never exceeds its solidus temperature but is close to it. Plastic deformation occurs in the base material but the base material is not liquefied.

REFERENCES:
patent: 3766633 (1973-10-01), Lehrheuer
patent: 4723518 (1988-02-01), Kawasaki et al.
patent: 4791259 (1988-12-01), Pfaffmann
patent: 4831976 (1989-05-01), Pozniak et al.
patent: 4896638 (1990-01-01), Shepley
patent: 5586530 (1996-12-01), Adachi et al.
European Search Report dated Jul. 8, 1997.

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