Welding power control apparatus for consumable-electrode type pulse arc welding, and a method therefor
US5866873A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Jan 29, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/092
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A welding power control apparatus that removes the effects of shorting and noise to accurately detect droplet separation, thereby reducing spatter during droplet separation and when shorting occurs, and stabilizing welding results is achieved. Welding conditions such as welding voltage, welding current, shorting, and droplet separation are detected. Based on thus detected welding conditions, a pulse wave configuration unit generates a steady-state pulse wave and a compensation pulse wave. The steady-state pulse wave is defined by a pulse height for a pulse period and a base height lower than the first pulse height for a base period. The compensation pulse wave defined by a compensation pulse height lower than the pulse height for a compensation period followed by the pulse wave based on said detected welding conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.