发明名称 |
METHOD OF USING COPPER BASED ELECTRODES TO SPOT-WELD ALUMINUM |
摘要 |
A method for spot-welding aluminum workpieces with copper electrodes that comprises the steps of: (a) super heating copper and one or more elements X that normally have little or no solubility in copper at room temperature, such super heating being a temperature at which X is soluble in copper, X being selected from te group of Mo, Ta, V, and W, and other elements that form monostectic or peritectic phases with copper and aluminum devoid of a eutectic, X being present in an amount of 4-15% by weight of the copper; (b) rapidly cooling in the solid solution to room temperature to retain such elements in solid solution; (c) either concurrently or subsequent to step (b), forming the solid solution as an electrode shape; and (d) passing current through the electrode shape to effect spot-welding of the aluminum workpieces. 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.
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申请公布号 |
CA2204076(A1) |
申请公布日期 |
1997.11.06 |
申请号 |
CA19972204076 |
申请日期 |
1997.04.30 |
申请人 |
FORD MOTOR COMPANY OF CANADA, LIMITED |
发明人 |
ALLOR, RICHARD L.;WHITE, DAWN R.;JONES, JERALD E. |
分类号 |
B23K11/11;B23K35/02;B23K35/04;B23K35/22;B23K35/40;C22C1/04;(IPC1-7):B23K11/10;B23K11/18 |
主分类号 |
B23K11/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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