Why Can Ultrasonic Welding Of Metal Products

Why Can Ultrasonic Welding Of Metal Products

Date:Feb 23, 2021

Ultrasonic welding uses an ultrasonic generator to convert 50/60 Hz current into 15, 20, 30 or 40KHz high frequency electrical energy. The converted high-frequency electric energy is again converted into mechanical motion of the same frequency through the transducer, and then the mechanical motion is transmitted to the welding head through a set of horn devices that can change the amplitude. The welding head transfers the received vibration energy to the joint of the workpiece to be welded. In this area, the vibration energy is converted into heat energy by friction to melt the plastic. Ultrasound can be used not only to weld hard thermoplastics, but also to process fabrics and films. The main components of an ultrasonic welding system include ultrasonic generator, transducer/horn/welding head triple group, mold and frame.


The principle of ultrasonic metal welding is a special method of connecting the same or dissimilar metals by using the mechanical vibration energy of the ultrasonic frequency (over 16KHz). When metal is ultrasonically welded, it neither delivers current to the workpiece nor applies high temperature heat source to the workpiece, but under static pressure, the wire frame vibration energy is transformed into friction work, deformation energy and limited temperature rise between the workpieces. . The metallurgical bonding between the joints is a solid state welding that is realized without the base material melting. Therefore, it effectively overcomes the spatter and oxidation caused by resistance welding. Ultrasonic metal welding machine can perform single-point welding, multi-point welding and short strip welding on thin wire or sheet materials of non-ferrous metals such as copper, silver, aluminum, and nickel. It can be widely used in the welding of SCR leads, fuse pieces, electrical leads, lithium battery pole pieces, and tabs.


Applications:


Daily necessities industry: powder box, makeup mirror, hair comb, lock ring, thermos cup, sealed container, seasoning bottle, water pipe joint, handle, bottle cap, food container, car lampshade, car water tank... etc.

Toy industry: all kinds of ball toys, stationery, water guns, plastic gifts, musical toys, and all kinds of plastic toys...etc.

Electrical industry: electronic clocks, steam irons, vacuum cleaners, telephones, computer keyboards, electric fans, batteries... etc.

Automobile manufacturing industry: car lights, rear mirrors, interiors, bumpers, various plastic products... etc.

Electronics industry: Mainly produces many plastic-related products such as power supplies, adapters, chargers, and mobile phone cases.


Welding products will involve more and more areas, and will continue to improve in terms of technology. In terms of metal welding, ultrasonic welding will become the mainstream trend in the future and be widely used.


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