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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.
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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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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.
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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.
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304 316 stainless steel is mainly used in kitchens, cabinets, home appliances, automobiles, electrical, transportation, construction, civil engineering and many other fields. Its excellent corrosion resistance and unique mechanical properties, physical properties and process properties give stainless steel a wide range of application prospects.
Read articleAs the Russia-Ukraine war continues and global oil prices continue to rise, lightweight new energy vehicles are becoming more and more popular. The quality of the vehicle determines fuel consumption. Lightweighting the vehicle body can significantly reduce the weight of the vehicle, and the fuel usage can be significantly reduced. If the car body needs to be lightweight, it must be made of aluminum alloy.
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In ventilation ducts, home appliances, automobiles, kitchen supplies, packaging tool boxes and other industries, in order to extend the service life of products and enhance the corrosion resistance of materials, coated steel plates are becoming more and more widely used. Resistance spot welding and projection welding of galvanized steel plates have low contact resistance...
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