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　　 Aluminum wire press weld
　　 Wire ball welding machine
　　 Welding (bonding) machine
　　 Subsidiary machine
Ultrasonic generator create ultrasonic (usually 40-140KHz), and produce high frequency librations through transducer, through amplitude rod and pass to chopper. When chopper touch with the down-lead and the welding object, in the force of pressure and librations, the welding metal surface scrub with each other, and the oxide film was destroyed, and occurred plastic distortion, and cause two clear metal surface touch closely, thus achieve the linking of atom distance, and finally form a firm metal bonding.
The down-lead material that ultrasonic welding used, in most cases, is aluminum wire and gold wire, copper also can be used for ultrasonic welding technique, at present, foreign countries have popularize copper welding in some range, our company will also dedicate in the researching of copper wire welding technology.

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