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:
May. 26, 2020
Filed:
Jun. 30, 2016
Constellium Neuf-brisach, Biesheim, FR;
Jean-Philippe Masse, Grenoble, FR;
Ravi Shahani, Voreppe, FR;
Constellium Neuf-Brisach, Biesheim, FR;
Abstract
The invention relates to a method for the laser welding of monolithic semi-finished products made from aluminium alloy, without filler wire, known to the person skilled in the art as 'remote laser welding', comprising the following steps: supplying at least two aluminium alloy semi-finished products, of which at least one is a rolled sheet of composition (wt.-%): Si: 2.5-14, preferably 2.7-5.0; Fe: 0.05-0.80, preferably 0.15-0.60; Cu: ≥0.20, preferably ≥0.10, also <0.05, and even <200, also 100 ppm; Mg: 0.05-0.80, preferably 0.20-0.40; Mn: ≥0.70, preferably ≥0.30; Cr: <0.35; Ti: 0.02-0.30; Sr up to 500 ppm; Na up to 200 ppm; Sb up to 0.15%, other elements <0.05 each and <0.15 total, remainder aluminium, on the condition that A: 5.2 Fe+1.95 Si−0.5 Cu−Mg≥7.0; and welding semi-finished products made from aluminium alloy, without filler wire, a method known the person skilled in the art as 'remote laser welding'.