Structure of metal container having trunk pipe and branch pipe, and manufacturing method and apparatus therefor
US5444206A · kind A · utility
9Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1991 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Sep 17, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a welded metal container by first arc welding a branch pipe to a trunk pipe. The arc welding of the pipes together causes both of the pipes to be thermally deformed. The end surfaces of the pipes are then cut by a laser cutting or mechanical cutting process so that the ends of the trunk pipe are in parallel and perpendicular to the end of the branch pipe. Subsequently flanges are laser welded to the ends of the pipes without further thermally deforming the pipes. The metal container made by this process can be used as a sheath for a gas insulated switch gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.