Copper alloy electrode for resistance weld and its manufacturing method

An electrode manufacturing and copper alloy technology, applied in the direction of electrode features, manufacturing tools, welding medium, etc., can solve the problems of reducing the toughness of cermets, coating cracking, and the thermal expansion coefficient is very different, reducing the friction coefficient and improving the working life. , the effect of reducing the bonding phenomenon
CN1775453AInactive Publication Date: 2006-05-24้™ˆ้“ฎ +1
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
้™ˆ้“ฎ
Publication Date
2006-05-24
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The present invention relates to a resistance welding copper alloy electrode and its production method. It is characterized by that in said electrode, on the matrix of electrode end portion at least three layers of materials are distributed, they are metal alloy layer contacted with said matrix, intermediate metal alloy composite material layer and external surface metal alloy layer. Besides, said invention also provides the concrete steps of its production method. Said copper alloy electrode has high working reliability and long working life.
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Description

(1) Technical field

[0001] The invention relates to a resistance welding copper alloy electrode and a manufacturing method thereof. (2) Background technology

[0002] Due to the excellent corrosion resistance of galvanized and galvanized aluminum sheets (including electroplating, hot-dip and evaporation plating), they have been more and more widely used in the fields of automobiles, home appliances, and construction in recent years. Especially in the automotive industry, galvanized sheets have been widely used to produce parts such as car bodies and welded by resistance welding. However, during resistance welding of galvanized steel sheets, the service life of resistance welding electrodes (including electrode heads, electrode caps, electrode plates and electrode wheels) is significantly shorter than that of uncoated steel sheets. When welding uncoated steel plates, the service life of resistance welding electrodes (such as Cu-Cr-Zr alloy electrodes) is usually more than 10...

Claims

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