In the automatic spot welding machine , the former can use a smaller current (several thousands of amperes), while the latter must use a large current (tens of thousands of amperes). Resistivity depends not only on the type of metal, but also on the heat treatment state, processing method, and temperature of the metal.
Full-automatic spot welder materials with high temperature strength and high yield strength metal are prone to defects such as spatter shrinkage cracks during spot welding. At this time, large electrode pressure is required.
If necessary, it is necessary to apply more forging pressure after power off, which will cause poor weldability. There is also a metal (such as aluminum alloy) with a narrow plastic temperature range.
Welding process parameter fluctuations will become very sensitive. If it is required to use equipment with precisely controlled process parameters, and the follower of the electrode is required to be good, the weldability is poor.
The sensitivity of the material of the automatic spot welder to the thermal cycle is affected by the thermal cycle of the welding. This requires a metal that has a tendency to be quenched. To prevent these defects, corresponding technical measures should be taken. Therefore, the weldability of a metal with a high thermal cycle sensitivity is also poor.
Suzhou Anjia Automation Equipment Co., Ltd. is a professional welding equipment manufacturer, focusing on the development and sales of energy-efficient resistance welding machines, automatic welding equipment and industrial non-standard special welding equipment. Anjia focuses on how to improve welding quality, welding efficiency and reduce welding. cost. If you are interested in our automatic spot welding machine, please contact us: 400-8333-566.
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