Thermal working method of metal material containing helium and thermal working apparatus therefor
US5731567A · kind A · utility
5Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1995 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Nov 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of performing thermal working to metal material containing helium, which comprises the steps of previously feeding current through a thermally working portion of the metal material containing helium to thereby reduce a helium content in the portion without melting the portion and then heating and melting the portion to improve the defects of the metal structure of the metal material containing helium. As a result, the improvement and removal of defects of the metal structure can be achieved by reducing a helium content in the thermally working portion of the metal material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.