Method for providing removable weld backing
US7028881B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | May 5, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K37/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Method for welding objects having limited backside access to a cavity behind a region to be welded. The method includes inserting a fugitive backing material in an installation state into a first portion of the cavity proximate the region to be welded and then transforming the fugitive backing material to a rigid state. The method further includes forming a weld in the region and then transforming the fugitive backing material to a removable state and removing the fugitive backing material from the cavity. The method may also include placing a pre-formed weld backing in the cavity and filling the cavity with a fugitive backing material. The method further includes transforming the fugitive backing material to a rigid state, forming a weld, and transforming the fugitive backing material to a removable state. The method may further include removing the fugitive backing material and removing the pre-formed weld backing from the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.