Spot welding method for aluminum material and aluminum material
US12233472B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2020 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | May 7, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This spot welding method for an aluminum material comprises: a processing step in which, in a plan view, a circular emboss expanded in a direction of superposition on a second aluminum plate side is formed at a position-to-be-welded of a first aluminum plate; an arrangement step in which positions-to-be-welded are superimposed while the expansion side of the emboss faces the second aluminum plate, and the positions-to-be-welded are arranged between a pair of electrodes; a pressing step in which the superimposed aluminum plates are pinched between the electrodes, and a central side excluding a peripheral edge of the emboss is pressed; and an electrification step of performing pressing and electrification. An electrode having a tip diameter larger than the diameter of a root part of the expansion part of the emboss is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.