Systems and methods providing controlled AC arc welding processes
US9120172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2012 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Apr 11, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Systems and methods for providing controlled AC arc welding processes. In arc welding power source embodiments, configurations of main and auxiliary bridge circuits allow for the directional switching of the output welding current through the welding output circuit path and selectively provide one or more high impedance paths to rapidly decay the arc current. The high impedance path aids in the low spatter transfer of molten metal balls from a consumable electrode to a workpiece and further aids in the maintaining or the re-establishing of an arc between the consumable electrode and the workpiece when a molten metal ball is transferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.