Method of manufacturing a Ti alloy poppet value
US6354001B1 · kind B1 · utility
10Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | May 16, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49309
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A bar material is made of an (&agr;+&bgr;) or a near &agr; Ti alloy which comprises a regular &agr; structure, and the end thereof is heated at a temperature above its &bgr; transformation point by an electric forging device to form an enlarged portion. The enlarged portion is immediately formed by hot forging to make a valve head of a poppet valve which is employed in an internal combustion engine. The valve head comprises an acicular &agr; structure which provides higher fatigue and tensile strengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.