Electric ARC welder system with waveform profile control for cored electrodes
US7166817B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2004 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jan 10, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/1068
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric arc welder for creating a welding process in the form of a succession of AC waveforms between a particular type of cored electrode, with a sheath and core, and a workpiece by a power source comprising an high frequency switching device for creating the individual waveforms in said succession of waveforms, each waveform having a profile is formed by the magnitude of each of a large number of short current pulses generated at a frequency of at least 18 kHz where said profile is determined by the input signal to a wave shaper controlling said short current pulses; a circuit to create a profile signal indicative of said particular type of electrode; and a select circuit to select said input signal based upon said profile signal whereby said wave shaper causes said power source to crate a specific waveform profile for said particular type of cored electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.