Method and apparatus for initiating welding arc using chemical spray
US7109433B2 · kind B2 · utility
2Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2003 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0672
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus for initiating an arc (e.g., a welding arc) by placing liquid droplets containing ions in the gap between an electrode and a workpiece. This is done while a potential difference is applied between the electrode and the workpiece. The presence of the ions renders the gap between the electrode and the workpiece more conductive, thereby reducing the voltage threshold needed to initiate an arc between the electrode and the workpiece. When the voltage threshold reaches the level of the applied potential difference, the arc will be initiated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.