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Resistance welding includes spot welding, butt welding, projection welding, and seam welding, which belongs to the category of pressure welding. In recent years, it has occupied an important position in welding science and technology. They are widely used in vehicles, construction, pipelines, hardware, sheet metal, aviation, aerospace, energy, electronics, and light industry.

The welding of carbon brushes and carbon brush wires is mainly done by resistance spot welding machine butt welding machine. It is widely used in power tools, automobiles, motorcycles, electric motors, generators, small kitchen appliances, shavers, and electric vehicles.

The spatter during spot welding is caused by the expansion of the metal at the welded area when resistance spot welding or projection welding is heated, forming liquefied metal and plastic rings. They continue to grow under the influence of temperature, causing the air pressure in the melting zone to continue to increase. The uneven wall thickness of the plastic ring allows liquid to overflow.

The welding of high-strength steel has evolved from laser arc welding to friction stir welding and then fully utilizing the resistance heat of the workpiece itself, that is, using resistance spot welding machine butt welding machine, in only 30 years.

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.

There 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.

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.

301L stainless steel is mainly used for tram frame steel. It is an austenitic stainless steel with lower Cr and Ni content and higher N content, which reduces the carbon content of the original 301 steel to improve the intergranular corrosion resistance of the welding zone.

Metal filters are generally welded using resistance spot welding machines. They are mainly used in kitchens, machinery, mining, petroleum, chemicals, medicine and other fields. The products formed include air conditioners, air purifiers, range hoods, dust collectors, etc.