Ultrasonic Copper Aluminum Conversion 20Khz 3000w Welding for Motor and Transformer
|Weight of horn||18KG||22KG||28KG|
|Dimension of Horn||530*210*230mm||550*220*240mm||550*250*240mm|
Ultrasonic wire harness welding uses high-frequency vibration waves to transmit to the surface of two wire harness workpieces to be welded. Under pressure, the surfaces of the two wire harness workpieces are rubbed together to form a fusion between molecular layers. The advantage is that it is fast and energy-saving. High fusion strength, good electrical conductivity, no spark, close to cold processing; the disadvantage is that the welded metal parts should not be too thick (generally less than or equal to 5mm), the solder joints should not be too large, and need to be pressurized.
Ultrasonic wire harness welding machines do not require flux and external heating, are not deformed by heat, have no residual stress, and require less pre-weld treatment on the surface of the weldment. Not only similar metals, but also between different metals can be welded. Sheets or filaments can be welded to the slab. Ultrasonic welding of good electrical conductors is much less energy than current welding and is commonly used for the soldering of leads for transistors or integrated circuits. When used for sealing welding of drugs and explosive materials, it can avoid the general welding of contaminated drugs due to dissolved objects, and will not explode due to heat. It is the use of ultrasonic waves to weld metal wires. It consists of a power box, transducer, pneumatic host and tool head. In addition, control components such as hubs, traverse devices, and microprocessors are included. The power box converts the usual external voltage (~220V, 50 or 60Hz) into 20000Hz (20KHz), voltage of more than 1 volt, and then is controlled by the power box to output and act on the transducer. A transducer is a highly efficient electrical component that converts electrical energy into mechanical energy. Compared with ordinary motors, there are two major differences between transducers: first, the transducer converts electrical energy into linear vibration instead of rotation; secondly, it works very efficiently and can convert 95% of electrical energy. After conversion by the transducer, mechanical energy is applied to the welding head. The ultrasonic horn is made of titanium alloy and is machined to a specific shape according to acoustic principles to ensure maximum energy transfer.c
When the generator issues an overload alarm, it should be checked as follows
1. No-load test, if the working current is normal, it may be that the welding head is in contact with the object that should not be touched or the parameter adjustment between the welding head and the welding seat is faulty.
2. When the no-load test is not normal, first observe whether there is crack in the welding head, whether the installation is firm, then remove the welding head and carry out the no-load test to eliminate whether there is a problem with the transducer + horn, and eliminate it step by step. . After eliminating the possibility of failure of the transducer + horn, replace the new horn to determine.
3. Sometimes there is a situation where the no-load test is normal, but it cannot work normally. It may be that the internal parts of the acoustic energy such as the welding head change, resulting in poor sound energy transmission. Here is a simple judgment method: hand touch method. The normal working welding head or horn surface is very uniform when working, and the hand feels velvety smooth. When the sound energy is not smooth, the hand feels like bubbles or burrs. Exclusion methods are used to eliminate problematic parts. The same situation can occur when the generator is not normal, because normally the transducer input waveform should be a smooth sine wave, which can also occur when there are spikes or abnormal waveforms on the sine wave. At this time, another pruning acoustic energy element can be substituted for discrimination.