Method and apparatus for improved cutting life of a plasma arc torch
US8525069B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2012 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | May 18, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49117
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved electrode for use in a plasma arc torch. The electrode includes an electrode body, a cavity in a front face at a first end of the electrode body, and an insert disposed in the cavity. The first end of the electrode body is formed of high purity copper containing at least 99.81% copper. The insert has a first end and a second end and is formed of a high emissivity material. A diameter of the first end of the insert is less than a diameter of a second end of the insert. An electrode is compressed to retain the insert using radial compression. The invention also includes a method for forming the electrode, and a method of operation of an electrode in a plasma torch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.