Fixtures, controls, handling and automated welding project planning.
Aluminum is a chemically active metal. It is easy to form an oxide film (Al2O3) on the surface that prevents the metal from further interacting with the surrounding medium. In the atmospheric medium, it has high corrosion resistance.
Read articleThere is an oxide film on the surface of the aluminum alloy, which can easily form copper-aluminum compounds with copper electrodes, thus affecting the life of the electrode. In order to ensure the life of the electrode and welding quality, Xinxing generally recommends the following treatments.
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Because copper alloy has good electrical and thermal conductivity, its spot weldability is quite poor. Thin plates are mostly welded by resistance spot welding machines, and thick ones are welded by resistance brazing.
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This is related to the performance and structure of low carbon steel. Its carbon content is low, below 0.2%. It has low strength, low hardness, good toughness and weldability, and a wide range of welding parameters. Generally, low carbon steel with a thickness of 0.5-3.5mm does not require special measures and can be simply welded with a single-phase power frequency AC power spot welder.
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Last time when we were installing a flash butt welding machine for a customer, an operator asked how to use the counting and pause functions. At that time, we were stunned. Such a simple question came up blank. The settings above are the same as those on the DTN stainless steel spot welder controller.
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In addition to flash butt welding machines, whether it is spot welding machine, projection welding machine, butt welding machine or seam welding machine, Xinxing says that the surface of the workpiece must be cleaned before operation. Why?
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Only by installing a more intelligent controller-type resistance welding machine can the butt welding machine have constant current control, constant voltage control and constant heat control. Xinxing's pneumatic spot welders, pneumatic butt welders, pneumatic projection welders, pneumatic seam welders and automatic welders all have this function.
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Resistance welding includes: spot welding, butt welding, projection welding, and seam welding. Its principle is: place two metal workpieces between electrodes, press them tightly and then energize them. The current flows through the welding area and then uses the resistance heat of the workpiece itself to heat the workpiece, so that the welded part reaches a local melting or high-temperature plastic state.
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Before using a newly purchased flash butt welding machine, you will generally feel a little at a loss. Xinxing Welding recommends that you please pay attention to some matters before welding, during welding and after welding according to the instructions.
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