System and method of short circuiting arc welding
US5148001A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1990 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Sep 4, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/46
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
There is provided an improvement in a short circuiting arc welding system comprising a work station with a consumable electrode and workpiece, a D.C. power supply with a positive and a negative terminal, high frequency current control means for applying a welding circuit with a given time-based profile across the work station while the electrode is short circuited and while the electrode is spaced from the workpiece, a welding current circuit means including a first means for creating a first inductive reactance in series with the current control means and work station whereby the welding current follows the time-based profile in accordance with the first inductive reactance. The improvement comprises a background current circuit means between the power supply and the work station and in parallel with the current control means and first means for applying continuously a background current across the work station. This background current circuit means includes a second means for creating a second inductive reactance substantially greater than the first inductive reactance and a resistor means for controlling the background current flowing continuously from the power supply to the wo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.