Welding method and welding device
US5446257A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1994 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Mar 28, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
During melting and jointing members 2, 3 to weld the members by applying a laser beam 5 to the members while supplying a filler wire 13 to the locally heated portion of the members, welding plasma intensities are measured by sensors 8, 9 from both sides of the locally heated portion with reference to an advancing direction of welding. When the welding plasma intensities measured from both sides of the locally heated portion are largely different from each other, the relative deviation between the laser beam 5 and the filler wire 13 is large, so that a good welding may be difficult to be carried out. Based on this recognitions, the relative position between the laser beam 5 and the filler wire 13 is corrected during welding to prevent occurrence of weld inferiority, so that the occurrence of weld inferiority due to the relative deviation between the the laser beam 5 and the filler wire 13 can be effectively prevented, thereby scrapped inferior members can be decreased providing a reduction of costs of materials and an improvement of weld efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.