Two stage welder and method of operating same
US6717107B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2002 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Jun 3, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/092
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric arc GMAW welder is provided, which welder includes a high speed switching power supply with a controller for creating a first or second weld process across the gap between a workpiece and a welding wire advanced toward the workpiece. The first process uses a first current waveform and the second process uses a second current waveform. A circuit is provided for shifting between the first and second weld processes. The shifting circuit includes a counter for counting the waveforms in the first and second processes and a circuit to shift from the process being processed to the other weld process when the waveform count of the weld process being processed reaches a preselected number for such weld process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.