Method and device to build-up, clad, or hard-face with minimal admixture
US8203099B2 · kind B2 · utility
18Cited by
35References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2007 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jul 7, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/05
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric arc device and methods to build up, clad, join, or overlay an alloyed metal onto a parent metal with minimal admixture. The methods employed in the electric arc device provide a high frequency waveform with a high amplitude pulse, a low amplitude background current, and a special shorting routine, to alleviate the problem of generating too much ad-mixture. A fast transition from a peak current level to a background current level along with a shorting response and a plasma boost pulse reduces the droplet size and reduces the heat input required to achieve good welding performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.