Method for manufacturing a structure component for a motor vehicle body
US11649536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2018 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Feb 2, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing a stamped component of motor vehicle bodywork or body structure from aluminium alloy comprising the steps of producing a metal sheet or strip of thickness between 1.0 and 3.5 mm in an alloy of composition (% by weight): Si: 0.60-0.85; Fe: 0.05-0.25; Cu: 0.05-0.30; Mn: 0.05-0.30; Mg: 0.50-1.00; Ti: 0.02-0.10; V: 0.00-0.10 with Ti+V≤0.10, other elements each <0.05, and <0.15 in total, remainder aluminium, with Mg<−2.67×Si+2.87, dissolving and steeping, pre-tempering, maturation for between 72 hours and 6 months, stamping, tempering at a temperature of around 205° C. with a hold time between 30 and 170 minutes or tempering at a time-temperature equivalent, painting and “bake hardening” of the paints at a temperature of 150 to 190° C. for 15 to 30 minutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.