Laser welding method
US4745257A · kind A · utility
18Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Apr 14, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser welding method and apparatus for welding stacked coated members in which voids in the welds are positively eliminated. A spacer is disposed between the two members to be welded. This provides a path for discharging gas formed by heating the coating material. The method and apparatus of the invention are useful for the laser welding of base members coated with metals having a lower melting point than the metal of the base, paints and oils. Preferably, the width of the gap is in a range of 0.1 mm to 0.5 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.