Abrasion resistant copper alloy, copper alloy powder for build-up cladding, and engine cylinder head
US6531003B2 · kind B2 · utility
1Cited by
2References
11Claims
0Family size
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Key dates
| Filing date | Feb 22, 1999 |
| Grant date | Mar 11, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2201/0475
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A valve seat (2) is formed by build-up cladding by irradiating a laser beam on a copper alloy powder (4) provided in the rim of a port (3) formed in an engine cylinder head (1). The copper alloy powder (4) consists of copper (Cu), 6-9 wt % nickel (Ni), 1-5 wt % silicon (Si), and 1-5 wt % of one of molybdenum (Mo), tungsten (W), tantalum (Ta), niobium (Nb) and vanadium (V). Due to this composition, the valve seat (2) has few microcracks and excellent abrasion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.