Is the welding circuit of medium frequency spot welding machine important?

Is the welding circuit of medium frequency spot welding machine important? The welding circuit is generally composed of the secondary winding of the solder resist transformer, hard conductor, soft conductor (composed of multiple layers of thin pure copper sheets or multiple sets of multi-core copper cables), electrode plate, electrode arm, electrode handle, electrode and Workpieces, etc.

Considering the mechanical structure, since the welding circuit must transmit large welding current and large mechanical force, it should meet the strength, stiffness and heat generation requirements. Each component of the welding circuit must have a sufficiently large cross-sectional size and good electrical and thermal conductivity. The contact resistance between components should be as small as possible, and water cooling should be used.

In addition to being related to factors such as the primary or secondary winding parameters of the transformer and the materials and dimensions of each component of the welding circuit, the short-circuit resistance of the welding circuit is also affected by the contact resistance at the connections of each component of the circuit. The contact resistance value at each connection is generally About 2~20μ. The short-circuit inductance of the welding circuit is composed of the leakage reactance of the solder resist transformer and the inductance of the circuit components, and increases with the penetration of magnetic materials.

There are two key indicators to measure the performance of the welding circuit of a mid-frequency spot welding machine, namely the short-circuit impedance of the welding circuit and the power factor of the welding machine. In order to reduce energy loss as much as possible and reduce the impact on the quality of the power grid, when designing and manufacturing welding machines, measures can be taken to reduce the leakage reactance of the transformer, reduce the area surrounded by the welding circuit, and reduce the contact resistance at the connections of each component. Measures should be taken to reduce the short-circuit impedance of the welding circuit, and the first two measures mentioned above should be taken to improve the power factor of the welding machine.

Suzhou Agera Automation Equipment Co., Ltd. is an enterprise engaged in the development of automated assembly, welding, testing equipment and production lines. It is mainly used in home appliance hardware, automobile manufacturing, sheet metal, 3C electronics industries, etc. According to customer needs, we can develop and customize various welding machines, automated welding equipment, assembly and welding production lines, assembly lines, etc., to provide appropriate automated overall solutions for enterprise transformation and upgrading, and help enterprises quickly realize the transformation from traditional production methods to mid-to-high-end production methods. Transformation and upgrading services. If you are interested in our automation equipment and production lines, please contact us: leo@agerawelder.com