Method for resistance spot welding of a sandwich material and corresponding device
US10562126B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 12, 2015 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Jun 12, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/172
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for resistance spot welding a metallic material to a sandwich material that includes a plastic core layer with two metallic cover layers may involve positioning a first electrode onto a surface of the metallic material, positioning an opposing second electrode onto a surface of the metallic cover layer that is apart from the metallic material, heating a region to be welded in such a manner that the plastic core layer in the region to be welded softens, moving the electrodes together to displace the softened plastic from the region to be welded until the two cover layers make contact with one another in a contact region, and welding the metallic cover layers to the metallic material in the contact region by a flow of electrical current across the first and second electrodes. A device by way of which a simple structure with a limited heat-affected zone is also disclosed for performing such methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.