Electric arc welder system with waveform profile control for cored electrodes
US9006609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2013 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Jan 29, 2033 |
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 a high frequency switching device for creating the individual waveforms in the 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 the profile is determined by the input signal to a wave shaper controlling the short current pulses; a circuit to create a profile signal indicative of the particular type of electrode; and a select circuit to select the input signal based upon the profile signal whereby the wave shaper causes the power source to create a specific waveform profile for the particular type of cored electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.