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What Are The Advantages Of Spot Welding By Spot Welding Machine
Jan 16, 2019

Spot welding machine is the welding of welded parts at individual points on the contact surface of the joint. Spot welding machine requires metal to have better plasticity. When welding, first clean the surface of the welded piece, then overlap and assemble the welded sheet metal, press it between the two columnar copper electrodes, and apply pressure to tighten it. When the current is large enough, a large amount of resistance heat is generated at the contact of the plate, which quickly heats the metal in the hottest area of the center to the state of high plasticity or melting, forming a lenticular liquid molten pool. Continue to maintain pressure, disconnect current, metal cooling, forming a solder joint. Spot welding machine is only used for welding of overlap structure of thin plate, metal mesh and cross reinforcement structure parts without sealing requirement, because there is a certain distance between solder joints. If the columnar electrode is replaced by the disc electrode, the electrode tightly compresses the weld and rotates, and the weld is continuously fed between the disc electrodes, and then connected with the pulse electrification. A continuous and overlapping weld can be formed to form a weld, which is seam welding. It is mainly used for the welding of thin overlap structure parts with high sealing requirements or joint strength requirements, such as oil tank, water tank, etc. Spot welder machine can be divided into 85 Closed (pneumatic and hydraulic); 8594 There are power frequency welding machine (using 50 Hz AC power), pulse welding machine (DC pulse welding machine, energy storage welding machine, etc.), frequency conversion welding machine (such as low frequency welding machine). Principle of spot welder 85 Resistance welding has the characteristics of high production efficiency, low cost, material saving and easy automation, so it is widely used in aviation, aerospace, energy, electronics, automobile, light industry and other industrial sectors. It is one of the important welding processes.