1 if you buy spot welding machine is used in a lithium ion battery anode (aluminum and aluminum spot welding spot welding), because of its power and other technical requirements of low, usually made of plastic welding circuit into a metal welding machine can be used, the price of 1-2 million yuan; but if the high quality requirements, or choose.
professional metal welding machine
2 for the welding of copper, nickel and other materials, it must choose a professional ultrasonic metal spot welder.Plastic welding circuit into a metal welding machine for proofing process are still able to cope, but really to mass production, the big question is, is the first production stability.
3 for different welding parts and materials, the amplitude is the key, lines are important details.Ultrasonic welding on the amplitude of demand is like a double-edged sword, small welding, excessive damage, the direct requirement of welding machine must have amplitude continuous adjustable function, some companies will deliberately avoided this request, because they do not.
4 ultrasonic welding the best control mode is the energy control mode, namely control each welding power.If a device without energy control mode, only low-end products, quality control is not good.
The 5 bonding mode selection: head branch split head and the overall head two.Split head much in use by AMTECH, its only advantage is low replacement cost, the other is a technical disadvantages, such as the two material velocity caused by different heating.From a technical point of view, one horn is not comparable advantage.Another is the welding head welding quality: quality and quality and technical aspects related, our head in the user there is and Germany and the United States head comparison, has the same service life.False welding service life in other domestic manufacturers are very popular.
6 frame structure: one of the most important is the welding head and the two rod fixation, metal welding will face greater pressure, and lateral.This requires the welding head and the two rod fixation must be hard fixed mode.What is hard fixed mode, namely fixed is metal on metal tightened, corresponding to the plastic welding in the fixed ring pad is a rubber or nylon gasket as buffer, this method used in metal welding, equivalent to the Dutch act: no limit.
7 pressure control mechanism: the welder must have good pressure control mechanism, electric proportional valve or a precision pressure regulator valve with feedback control valve, can better control of stable pressure.
Power rating: 8 according to the international ultrasonic metal welding machine, 20K machine power capacity must be at least 3KW.Other domestic companies to power capacity often appears false nominal, that we only need and what they do plastic welder compare to, because the plastic welder nominal is too high nobody believed.In addition, the domestic other company transducer basic procurement, on behalf of the supplier for the success of Hangzhou: ultrasound, we need only on its website can be found in the 20kHz, the maximum input power of 2000W transducer.
9: welding layers due to battery multilayer structure, each layer generated between interlayer slip, so according to the principle of ultrasonic friction, netted design depth is basically to reach or exceed the thickness of the material, which is formed of relatively thick materials must do more deep lines; at the same time according to the ultrasonic welding shall be overcome material yield strength, so the copper foil will be in accordance with the grain shape, such as grain, the surface of the copper or aluminum molding caused by mechanical stretch will be large, this is also to a multilayer welding surface layers of easy fracture reason.So ultrasonic welding for layers choice is limited.In addition: ultrasonic wave in material attenuation is another problem, thicker materials, considering the attenuation, it needs to increase the amplitude, it is very easy to form and head contact materials after welding, representation for blackening and severe fever.
10 for certain domestic company launched the double-headed machine, a stunt and speculation.We just need to ask a question: why Europe and the United States technology so advanced, they are the introduction of similar products?Double machine launched: 1 reasons for increased power; 2 welding layers increases.The first reason, the company actual single spot welding machine is not up to their nominal power; for the second reason, based on the technical reason is the aforementioned attenuation problem, but they can avoid another problem: ultrasonic since it is based on the relative friction welding, friction, which in technology on the requirements of the two welding head to work absolutely reverse, how they do it?The welding head and the whole acoustic components necessary frequency offset exists, such as the generator of automatic tracking, the two systems can not do the reverse, unless using two sets of series control system, can they do?If the generator is not automatic tracking, can rely on manual tuning can achieve?A joke.So that the product is purely speculation gimmicks and.