Process for narrow gap welding of aluminum alloy thick plates
US4019018A · kind A · utility
11Cited by
4References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Jan 29, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/23
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The narrow gap butt welding of aluminum and aluminum alloy plates of a thickness more than 20 mm with a non-consumable electrode is conducted by inserting a filling material into a welding groove, applying a direct current of more than 300 A between said non-consumable electrode which does not have a sharp end and said plates to be welded with straight polarity, maintaining an arc length from 0.5 to 5 mm and shielding the welding groove area with a shielding gas comprising at least 50% helium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.