Method of joining aluminium alloy sheets of the AA7000-series
US9352377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2012 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Jan 16, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49954
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for producing a joint in at least two overlapping metal work pieces using a joining tool to obtain a mechanical joint between the overlapping work pieces, in particular joining by mechanical folding or pressure joining At least one of the first work piece and second work piece is a sheet material made of an aluminum alloy of the AA7000-series. A heat-treatment is applied to at least the work piece of 7000-series sheet material within 120 minutes prior to the production of the joint and/or for at least part of the time during production of the joint to temporarily reduce the tensile strength in the joining area of at least the work piece of said 7000-series sheet material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.