Welding process and welded joints
US6336583B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2000 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Feb 25, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for forming a welded joint between abutting pieces of steel. The welded joint is produced by first forming a strength weld and then depositing additional weld metal on the toe of the strength weld to form a toughness weld. The fusion interface of the toughness weld forms a minimum angle with the direction of the maximum tensile load across the welded joint. The toughness weld toe is separated from the heat-affected zone of the strength weld to effectively prevent propagation of a crack initiated at the toughness weld toe into the heat-affected zone of the strength weld. The welded joint so produced is substantially resistant to failure by brittle fracture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.