Method of arc welding using dual serial opposed torches
US5990446A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Mar 27, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K10/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An improved method of arc welding uses a single power supply connected to opposed welding torches placed on both sides of a workpiece. Each torch is connected to a different polarity lead of the power supply and forms a separate arc with the workpiece. When a current is supplied to the first torch, it is guided from the first electrode, through the first arc, the workpiece, the second arc, and to the electrode of the second torch. This guiding function improves the penetration, concentration, as well as the directional stability of the arc. This permits the effective and efficient welding of relatively thick workpieces using existing equipment at low current levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.