Method of making and/or using copper based electrodes to spot-we

Details Method of making and/or using copper based electrodes to spot-we Method of making and/or using copper based electrodes to spot-we

1997-10-31

2000-11-07

Heinrich, Samuel M.

Electric heating

Metal heating

For bonding with pressure

219119, 164 46, 427 61, B23K 3504, B23K 1130

Patent

active

06144006&

ABSTRACT:
A method for spot-welding aluminum workpieces with copper electrodes that comprises the steps of: (a) dissolving copper and one or more alloying elements X to yield an alloy that increases the liquidus of Al when dissolved in molten Al, super heating the alloy of copper and one or more elements X that normally have little or nor solubility in copper at room temperature, such super heating being a temperature at which X is soluble in copper, X being selected from the group of Mo, Ta, V, and W, elements that form monotectic or peritectic phases with copper and aluminum devoid of an eutectic, X being present in an amount of 4-15% by weight of the copper; (b) rapidly cooling the alloy to room temperature to retain such elements in solid solution; (c) either concurrently or subsequent to step (b), forming the alloy as an electrode shape; and (d) passing current through the electrode shape to effect spot-welding of the aluminum workpieces when pressed thereagainst while extending the welding life of the electrode. Super heating and rapid cooling may be carried out by atomizing a melt of Cu and X with a pressurized gas that directs the spray onto a target for further cooling and eventual working or shaping.

REFERENCES:
patent: 1074285 (1913-09-01), Nolan
patent: 2069906 (1937-02-01), Vaders
patent: 2311750 (1943-02-01), Hensel et al.
patent: 3045331 (1962-07-01), Ang et al.
patent: 3116141 (1963-12-01), Rylander et al.
patent: 3128540 (1964-04-01), Gwyn et al.
patent: 3515542 (1970-06-01), Larsen
patent: 3909581 (1975-09-01), Stone et al.
patent: 4517033 (1985-05-01), Okumura et al.
patent: 4818283 (1989-04-01), Grunthler et al.
patent: 4840711 (1989-06-01), Joseph
patent: 5039478 (1991-08-01), Sankaranarayanan
patent: 5126528 (1992-06-01), Bush et al.
patent: 5188799 (1993-02-01), Mori et al.
patent: 5391854 (1995-02-01), Namba et al.
patent: 5611945 (1997-03-01), Kuwabara et al.

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