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:
Mar. 23, 2021
Filed:
Mar. 16, 2016
GM Global Technology Operations Llc, Detroit, MI (US);
David Yang, Shanghai, CN;
Wu Tao, Tianmen, CN;
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A method of laser welding a workpiece stack-up () that includes at least two overlapping metal workpieces () comprises advancing a laser beam () relative to a plane of a top surface () of the workpiece stack-up () from a start point () to an end point () along a beam travel pattern () at a high laser beam travel speed of greater than 8 meters per minute. The two or more overlapping metal workpieces () may be steel workpieces or they may be aluminum workpieces, and at least one of the metal workpieces () includes a surface coating (). Advancing the laser beam () along the beam travel pattern () forms a weld joint (), which includes resolidified composite workpiece material derived from each of the metal workpieces () penetrated by a molten weld pool (), that fusion welds the metal workpieces () together. The relatively high laser beam travel speed contributes to improve strength properties of the weld joint ().