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Solder joint strength will decrease. Factors such as oxygen, dirt, oil and other impurities affecting the surface of the workpiece increase the contact resistance. How to master the diameter of the flux cylinder of the electric welding machine In order to introduce the spot welding machine, ultrasonic metal welding machine, battery equipment, lithium battery special equipment, energy storage spot welding machine, automatic spot welding machine, AC spot welding machine, capacitor conduction Tape out automatic spot welding machine, lithium battery type automatic spot welding machine, automatic spot welding machine, automatic spot welding machine, AC parallel automatic spot welding machine, and other products, we will continue to introduce new knowledge to help everyone learn better .

Due to its advantages of small size, simple operation, convenient use, fast speed, and strong weld after welding, it is widely used in various fields, especially for parts that require high strength. Metals) are joined together, but the welding method is different) for permanent connection. After heat treatment, the welding seam has the same strength as the base metal and is well sealed, which solves the storage and transportation problems of gas and liquid containers. In the aging furnace, the electrode contact area determines the current density, the resistance and thermal conductivity of the electrode material are related to the generation and dissipation of heat, and the shape and material of the electrode have an important influence on the formation of the electrode nugget.

The deformation and wear of the welding head increases the contact area of ​​the welding spot and reduces the strength of the welding spot; factors such as oxides, dirt, oil and other impurities affecting the surface of the workpiece increase the contact resistance. An oxide layer that is too thick may even prevent current flow. Because the current density is too high, local conduction can produce spatter and surface burnout. The presence of the oxide layer will also affect the heating non-uniformity of each solder joint, resulting in fluctuations in the welding quality. Therefore, thorough cleaning of the workpiece surface is a necessary condition for obtaining high-quality connections. Only a small part of the heat generated by the spot welder is used to form the solder joint during thermal balance and heat dissipation welding.

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