Internal combustion engine valve
US5611306A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Aug 8, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L3/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is provided an internal combustion engine valve having a body, a head, and a contact surface disposed on a head surface to be adapted to periodically enter into gas-sealing engagement with a valve seat, said contact surface being formed in alloy deposit welded to said valve head, by a high density energy beam such as a plasma beam or a laser beam, on said head surface, a cobalt based composition of said alloy deposit, measured at said contact surface, consisting essentially of PA0 carbon: 2.2 to 2.6 weight percent; PA0 silicon: 1.1 to 1.3 weight percent; PA0 manganese: 2.6 to 3.1 weight percent; PA0 nickel: not more than 1.5 weight percent; PA0 chromium: 28 to 31 weight percent; PA0 iron: 10 to 11 weight percent; PA0 tungsten: 13.5 to 15.5 weight percent; balancing cobalt and inevitable amount of impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.