Aluminum welding process and mixture of reactants for use in...

Details Aluminum welding process and mixture of reactants for use in... Aluminum welding process and mixture of reactants for use in...

B - Operations, Transporting

23

K

B23K 23/00 (2006.01) B23K 35/34 (2006.01)

Patent

CA 2077234

ABSTRACT The invention provides a method and means of producing weld metal for use in joining two or more aluminum contain- ing pieces. The method includes the steps of providing a novel mixture of reactants comprising silicon, a reducing agent, a metallic compound which is exothermically reduced by the reducing agent, and a filler metal that does not react with the metallic compound. The mixture of reactants is then exothermically reacted so as to form the weld metal for joining the metallic pieces. At least about 90 percent by weight of the weld metal is produced by the silicon and the filler metal and at least about 90 percent by weight of the weld metal has a chemical composition substantially similar to that of at least one of the metallic pieces being joined.

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