Different materials joint structure
US10640153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2018 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Jan 27, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/20
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A subframe structure includes a frame front part and a frame rear part in a vehicle front-rear direction. The frame front part and the frame rear part are joined together. The frame front part has a higher strength than the frame rear part. The subframe has different strengths from part to part. The frame front part is made of a galvannealed steel plate (GA steel plate) subjected to an electrodeposition coating. The frame rear part is made of a hot-dip galvanized steel plate (GI steel plate) subjected to an electrodeposition coating. A rear cross member of an aluminum die-casting and a rear cross panel of a hot-dip galvanized steel plate (GI steel plate) are integrally joined together by a friction stir welding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.