Spot welding method
US11007598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2016 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Jan 2, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention provides a spot welding method for a member to be welded constituted of a plurality of steel sheets that are overlapped with each other at at least a welding zone, in which at least an overlapped face of at least one of the plurality of steel sheets at the welding zone is coated with zinc plating, a total sheet thickness t (mm) of the plurality of steel sheets is 1.35 mm or more, a squeeze time St (seconds) from the time when welding electrodes are brought into contact with the member to be welded to the time when electric current flow for welding starts satisfies “0.020≤St”, and a hold time Ht( seconds) after welding from the time when electric current flow for welding between the welding electrodes ends to the time when the welding electrodes and the member to be welded are brought out of contact satisfies “0.015t2+0.020≤Ht”.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.