Electrode interface bonding
US6433300B1 · kind B1 · utility
7Cited by
5References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 2001 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | May 31, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3442
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrode for a plasma arc torch and method of fabricating the same are disclosed, and wherein the electrode comprises a copper holder defining a cavity in a forward end. An emissive element and separator assembly is positioned in the cavity, and no brazing materials are used to secure the components of the electrode. An intermetallic compound is formed between the emissive element and the separator, and a eutectic alloy is formed between the separator and metallic holder by independent heating steps. A crimping process is also disclosed for further strengthening the electrode and increasing the operational life span thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.