Ti alloy poppet valve and surface treatment thereof

Details Ti alloy poppet valve and surface treatment thereof Ti alloy poppet valve and surface treatment thereof

1999-10-04

2000-10-17

Chambers, A. Michael

Fluid handling

With casing, support, protector or static constructional...

Jacketed

251368, 1231883, F16L 700

Patent

active

061316032

ABSTRACT:
A poppet valve in an internal combustion engine of a vehicle consists of a valve body which comprises a valve stem and a valve head at one end of the valve stem. An oxidized layer is formed on portions of the valve body which contacts another valve-operating member. On the oxidized layer, a carburized layer is formed to cover the whole surface to increase wear resistance and fatigue strength of the valve.

REFERENCES:
patent: 5370364 (1994-12-01), Kenmoku et al.
patent: 5441235 (1995-08-01), Narasimhan et al.
patent: 5662745 (1997-09-01), Takayama et al.

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