Dual-layer sintered valve seat ring
US4424953A · kind A · utility
30Cited by
7References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 8, 1983 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Mar 8, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49409
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a dual-layer sintered valve seat ring having high stiffness and strength. The features of such ring are: fusion infiltration of Cu into the pores of a ferrous sintered body; hard alloy particles dispersed in the matrix of the valve seat body; the composition of the base and the ferrous sintered body; high density; and, diffusion of an alloying element of the hard particles around them and into the matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.