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What are the influencing factors of welding nuggets in automatic spot welders?

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发布日期:2020-01-02 15:15:10【 Browse: -Release Date: 2020-01-02 15:15:10 [Large Middle Small]

Because the contact area of the electrode determines the current density of the automatic spot welder , the resistivity of the electrode material and the thermal conductivity are related to the generation and dissipation of heat. Therefore, the shape and material of the electrode have a significant effect on the formation of nuggets.

自动点焊机

The electrode pressure of the automatic spot welder has a significant effect on the total resistance R between the two electrodes. As the electrode pressure increases, R significantly decreases, but the increase in the welding current is not large. Reduced heat production. Therefore, the strength of the solder joint always decreases as the welding pressure increases. The solution is to increase the welding current while increasing the welding pressure.

1. As the electrode deforms and wears, the contact area increases, and the strength of the solder joint will decrease. In order to ensure the nugget diameter and solder joint strength, the welding time and welding current can be made up within a certain range. In order to obtain a solder joint of a certain strength, high current and short time (strong specification, also known as hard standard) can be adopted, and low current and long time (weak specification, also known as soft standard) can be adopted.

2. Select hard standards as well as soft standards, depending on the performance, thickness of the metal and the power of the welding machine used. There is an upper limit to the current and time required to weld the metal. In order to ensure the nugget length and welding point strength, the welding time and welding current can be made up within a certain range. In order to obtain solder joints of a certain strength, high current and short time (strong specification, also known as hard standard) can be adopted, and low current and long time (weak specification, also known as soft standard) can be adopted.

Suzhou Anjia Automation Equipment Co., Ltd. is a professional welding equipment manufacturer, focusing on the development and sales of energy-efficient resistance welding machines, automatic welding equipment and industrial non-standard special welding equipment. Anjia focuses on how to improve welding quality, welding efficiency and reduce welding. cost. If you are interested in our automatic spot welding machine, please contact us: 400-8333-566.





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