The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2020
Filed:
Oct. 06, 2016
Constellium Neuf-brisach, Biesheim, FR;
CONSTELLIUM NEUF-BRISACH, Biesheim, FR;
Abstract
The invention relates to a method for manufacturing a stamped motor vehicle bodywork or shell-structure component made of an aluminium alloy, comprising the steps of manufacturing a metal sheet or strip with a thickness of 0 to 3.5 mm made of an alloy with the following composition (wt %): Si: 0.60-0.85; Fe: 0.05-0.25; Cu: 0.05-0.30; Mn: 0.05-0.30; Mg: 0.50-0.00; Ti: 0.02-0.15; V: 0.00-0.15; other elements <0.05 each and <0.15 in total, remainder aluminium, with Mg<−2.67×Si+2.87, solution heat treating and quenching, pre-tempering, ageing for 72 hours to 6 months, stamping, tempering at a temperature of around 205° C. with a dwell time of 180 to 480 minutes or tempering at an equivalent time and temperature, painting and 'bake hardening' at a temperature of 150 to 190° C. for 15 to 30 min. The invention also relates to a stamped motor vehicle bodywork or shell-structure component, further referred to as 'body in white' produced by such a method.