Plasma arc torch having an electrode with internal passages
US7375303B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 2005 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Sep 9, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrode for a plasma arc cutting torch which minimizes the deposition of high emissivity material on the nozzle, reduces electrode wear, and improves cut quality. The electrode has a body having a first end, a second end in a spaced relationship relative to the first end, and an outer surface extending from the first end to the second end. The body has an end face disposed at the second end. The electrode also includes at least one passage extending from a first opening in the body to a second opening in the end face. A controller can control the electrode gas flow through the passages as a function of a plasma arc torch parameter. Methods for operating the plasma arc cutting torch with the electrode are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.