Indirect spot welding method
US10189111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2014 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | May 27, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/172
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This indirect spot welding is for welding members including at least two overlapping steel sheets that have a ferrite phase as a main phase by holding a welding electrode (23) against a steel sheet (21) from one side while applying pressure with the electrode (23), attaching a feeding point (24) to a steel sheet (22) at the other side at a location remote from the electrode (23), and allowing current to flow between the electrode (23) and the feeding point (24). This welding includes contacting magnetic rigid bodies (26-1, 26-2) to a peripheral area of the electrode (23) from the one side against which the electrode (23) is held and securing an overlapping region in the peripheral area of the electrode (23) by a magnetic force produced by the rigid bodies (26-1, 26-2), thereby obtaining a weld having fully satisfactory strength, regardless of the rigidity of the members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.