Laser clad valve for internal combustion engine
US4787736A · kind A · utility
18Cited by
4References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 15, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Jun 15, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12937
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In an engine valve comprising a valve body of an iron base material, a Stellite or similar alloy is clad on the body using a laser beam with a sufficient energy to form a cladding layer as a valve face such that the iron from the body-forming iron base material is diffused into the cladding layer throughout its thickness through an interface layer between the cladding layer and the valve body, whereby the cladding layer has 5 to 15 wt % of iron diffused and the interface layer has an iron content continuously decreasing from the iron content of the body-forming iron base material to that of the cladding layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.