Method and device for underwater electrical welding
US4894512A · kind A · utility
5Cited by
5References
8Claims
0Family size
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Inventors
Key dates
| Filing date | Jun 30, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Jun 30, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0061
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Method of underwater arc welding comprising the steps of placing a welding electrode nearby a parent material to be welded, immerged in water; generating a high frequency voltage between the electrode and the parent material for starting a striking arc and supplying a high frequency current to said electrode, after said striking arc has been initiated; generating a welding voltage for producing a weld at the parent material and; simultaneously sustaining the high frequency current, superimposed to the welding current, for stabilizing said welding arc during the time duration of the underwater arc welding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.