Steel sheet assembly, method of manufacturing steel sheet assembly, and spot welding process
US12208462B2 · kind B2 · utility
0Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2021 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Nov 30, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A welding process used in a method of manufacturing a steel sheet assembly includes spot welding steel sheets performed for a heat time of 0.08 seconds or more using a convex electrode with a tip radius of curvature of 20 mm or more or a flat electrode such that the weld force F (kN) for initial 0.03 seconds of the heat time satisfies formula: F<0.00125×(1+0.75×tall)+3 where TS (MPa) denotes an average strength of the steel sheets and represents a weighted mean value of a thickness of each of the steel sheets, and tall (mm) denotes a total thickness of the steel sheets (the sum of the thicknesses of the steel sheets).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.