Electrode diffusion bonding
US6657153B2 · kind B2 · utility
10Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jan 14, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49147
- 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. The emissive element, separator, and metallic holder are heated to accelerate diffusion bonding between the emissive element and separator, and between the separator and metallic holder. 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.