Electric-resistance-welded pipe welding apparatus
US9162268B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2010 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Sep 28, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric-resistance-welded pipe welding apparatus includes: an impeder that is disposed in the inner portion of a metal strip which is bent into the cylindrical shape, and is disposed spanning over from the upstream to the downstream of a position in which the induction coil is present when viewed along a traveling direction of the metal strip; and a metallic shield plate that is disposed further upstream than an upstream end of the impeder and is disposed in a position which is further downstream than the rolls when viewed along the traveling direction, the metallic shield plate including a hole portion through which the metal strip bent into the cylindrical shape passes, and the metallic shield plate shielding a magnetic flux generated in the induction coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.