Apparatus for fusibly bonding a coating material to a metal article
US4243867A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1978 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Jun 26, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49314
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for fusibly bonding a powder coating material to a metal article includes a holding device for releasably supporting the article, a depositing device for controllably placing the powder coating material in a band onto a surface of the article, and a laser beam for controllably liquifying a portion of the band of powder and juxtaposed surface while minimizing heat transmission into the article and allowing rapid hardening of the portion of the band after removal of the laser beam to provide a surface layer having properties based substantially solely on the coating material and a relatively thin, strong region of interstitial bond between the surface layer and the article having properties based upon both the coating material and the article. An exemplary engine valve with a relatively fine metallurgical surface structure for increased hardness is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.