Method of pipe welding
US6204478A · kind A · utility
22Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2000 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | May 10, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of welding the ends of two pipes at the open root between the spaced ends by an STT electric arc welder, which comprises: selecting a welding wire having 0.06-0.15% by weight carbon, 0.90-1.40% by weight manganese, and 0.45-0.75% by weight silicon, as well as phosphorous, copper, stainless steel alloys and sulfur; maintaining the sulfur at a given percentage level of the selected wire in the specific range of 0.015 to 0.035% by weight; and maintaining said phosphorous at a given percentage level of said selected wire in the specific range of less than about 0.015%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.