Controlled pressure butt welding process and apparatus for carrying it out
US4959519A · kind A · utility
3Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1989 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Feb 23, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a pressure butt welding process, in particular for welding chain link bent from round wire, the influence of disturbing factors on the quality of the welding result is compensated by measuring the welding forces F.sub.K exerted on the workpiece by the upsetting dies and setting and welding voltage applied to the workpiece according to the level of the measured forces F.sub.K. A control means adjusts the welding voltage via a thyristor control circuit and thereby the effective welding power in such a way that the welding forces F.sub.K remain constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.