Introduction to the four types of welding systems for resistance welding machines

1、Single-phase AC resistance welding machine: the welder is the most common at present. Using a single-phase AC control system and transformer, it can meet the needs of most mild steel welding. However, with the national control of industrial electricity capacity, welding plate thickness of the workpiece caused a huge burden and impact on the power grid. The advent of three other welding methods has solved this problem.

2、Mid-frequency inverter welding machine: This is the most advanced resistance welding technology. After transformer rectification, DC power is output through electrodes, which can maximize power factor, ensure welding quality and save 30% energy (compared with single-phase AC). In addition, this welder has excellent welding effect when welding some special materials, such as aluminum, aluminum alloy, galvanized sheet, etc. The main technical points of this welder are the welding controller and the transformer.

3、Third-stage rectifier welder: This kind of welder is mainly used for spot convex welding, and its main feature is to realize high-power welding with less influence on the power grid. Now also used for flash welding and resistance welding of seam welding.

4、AC inverter welding system: This kind of welder is mainly used for seam welding. Its main feature is to keep the three-phase balance, which has a small impact on the power grid and high energy-saving power factor.

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