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1. (WO2015123311) METHOD OF JOINING DISSIMILAR MATERIALS

Pub. No.:    WO/2015/123311    International Application No.:    PCT/US2015/015437
Publication Date: Fri Aug 21 01:59:59 CEST 2015 International Filing Date: Thu Feb 12 00:59:59 CET 2015
IPC: B23K 11/20
B23K 11/11
B23K 11/24
Applicants: MAGNA INTERNATIONAL INC.
HILL, John
GABBIANELLI, Gianfranco
BYRNE II, James
SINGH, Jaswinder
CHELLMAN, Mari
BEALS, Randy
Inventors: HILL, John
GABBIANELLI, Gianfranco
BYRNE II, James
SINGH, Jaswinder
CHELLMAN, Mari
BEALS, Randy
Title: METHOD OF JOINING DISSIMILAR MATERIALS
Abstract:
The invention provides a method of joining dissimilar materials, such as aluminum to steel, by applying low pressure and heat to minimize distortion of the materials and the heat affected zone. The method includes applying current to a weld element, at least partially melting a portion of the first material with the heated weld element, and passing through the at least partially melted portion of the first material with the weld element. The method further includes contacting the second material with the heated weld element, and melting a portion of the weld element and a portion of the second material in contact with one another to form a weld. The weld element is designed with a head to trap the first material between the head and the second material, and a vent for receiving the at least partially melted first material as the weld element passes through.