Method and system to use AC welding waveform and enhanced consumable to improve welding of galvanized workpiece
US10052706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2015 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Apr 3, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C2/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Embodiments of the present invention comprise a system and method to weld or join coated materials using an arc welding system alone, or in combination with a hot wire system, where the arc welding system uses a welding current having an AC current portion to build a droplet for transfer to the workpiece. In further embodiments, the workpiece is coated with a material, such as zinc, and the arc welding system uses an AC welding waveform which is capable of welding coated workpieces with little or no porosity or spatter and can achieve enhanced performance. Additional embodiments use an enhanced electrode to provide optimum porosity performance. Such embodiments allow for the welding of coated material with little or no porosity and spatter, and at a high welding rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.