Method of spot welding aluminum alloys

Details Method of spot welding aluminum alloys Method of spot welding aluminum alloys

1993-12-16

1995-02-21

Evans, Geoffrey S.

Electric heating

Metal heating

For bonding with pressure

219119, B23K 1118

Patent

active

053918541

ABSTRACT:
A method of spot welding aluminum alloy workpieces having electrical conductivity of 18.about.57% IACS and Vickers hardness of 26.about.200 is disclosed. The aluminum alloy workpieces are spot welded by a pair of welding electrodes having an electrical conductivity of not less than 92% IACS and a Vickers hardness of 50.about.130. The differences of the electrical conductivity and Vickers hardness between the welding electrodes and the aluminum alloy workpieces are in a range of 41.about.87% IACS and not larger than 99, respectively.

REFERENCES:
patent: 3751626 (1973-08-01), Binger et al.
patent: 4972047 (1990-11-01), Puddle et al.

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