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Why do false welds appear in spot welding process of aluminum sheet


Latest company news about Why do false welds appear in spot welding process of aluminum sheet

There are three main reasons for wrong welding in the spot welding process of aluminum plate:


First reason is that the welding pressure is too high, because the aluminum plate has high electrical conductivity and soft material, and the welding pressure reduces the contact resistance, and the heat generated is not enough to produce a qualified nugget

The second reason is that the oxide film formed on the surface of the aluminum plate is too thick and has not been cleaned.The solution is to pickle the surface prior to welding or mechanical treatment (e.g. grinding, sandblasting, etc.).


The third is the improper selection of spot welding machine.The thermal and electrical conductivity of aluminum sheets is very high and requires the use of hard specifications and DC spot welders, such as intermediate frequency inverter DC spot welders or energy storage spot welders.


Guangdong Hwashi Technology INC. is specialized in the production of series resistance welding machine (spot welding, touch welding, seam welding, row welding, butt welding) and industrial robots (six axis mechanical arm, welding robot, and loading robot, transfer robot, grinding and polishing robot, painting robot, glue robot) research and development, design, production, sales, service as one of the high-tech enterprises.Products are mainly used in household appliances, kitchen appliances, lighting, hardware tools, electrical and electrical, instrumentation, 3C electronic industry, auto and motorcycle parts, military aviation and other fields.According to customer needs, we can develop and customize various welding machines, automatic welding equipment and welding assembly lines, assembly lines, etc., to provide appropriate overall automation solutions for enterprise transformation and upgrading, and help enterprises quickly realize the service of transformation and upgrading from traditional production mode to middle and high-end production mode.

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