Welding shield gas and welding method
US7208695B2 · kind B2 · utility
3Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | May 30, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/05
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A welding shield gas comprising an inert gas and nitrogen gas, where the concentration of the nitrogen gas is 1 to 95 vol %; or comprising an inert gas and a helium gas, where the concentration of the helium gas is 35 to 95 vol %; or comprising an inert gas, nitrogen gas, and a helium gas, wherein the concentration of the nitrogen gas is not less than 1 vol % and less than 65 vol % and the concentration of the helium gas is 35 to 95 vol %. This shield gas can be used in the non-consumable electrode arc welding of a welded material consisting of stainless steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.