Poppet valve

Details Poppet valve Poppet valve

1975-12-30

1978-02-14

Cline, William R.

Valves and valve actuation

Valve

Materials

291567B, 123188AA, 228112, F16K 2400

Patent

active

040734749

ABSTRACT:
An upset-forged poppet valve wherein at least the head portion and a part of the neck is made of a high temperature super alloy while the remaining portion is made of a conventional valve steel, said two materials being connected by friction welding before said valve is forged. The method comprises two steps of first friction-welding two rods of said two materials and then forming the connected single rod into the poppet valve by upset-forging.

REFERENCES:
patent: 1607968 (1926-11-01), Spire
patent: 1772482 (1930-08-01), Ford
patent: 1948793 (1934-02-01), Lewis, Jr.
patent: 2115733 (1938-05-01), Krivobok
patent: 3497349 (1970-02-01), Eppich
patent: 3735910 (1973-05-01), Watson et al.

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