How Does A Spot Welder Work?

Spot welder is a device for metal welding. It uses resistor heating and pressure to connect two or more metal pieces together. It is widely used in the fields of industrial manufacturing and automobile manufacturing. It can complete welding work quickly and efficiently.

The working principle of spot welder mainly includes the following steps:

1. Pickled Metal Slices: Firstly, hold the metal piece that needs to be welded between the electrodes of the point welding machine. Generally speaking, the electrode is made of copper with better conductivity to ensure that the current can be passed smoothly.

2. Apply a Current: Spot welder will apply a certain current through the electrode. Under normal circumstances, Spot welder will apply thousands of ampel current to heat the metal videos locally. The current in the metal sheet will cause local heating of the metal and form a high temperature area.

3. Apply Pressure: While the current is heated, spot welder also applies a certain pressure. In this way, metal pieces will be squeezed while heating, causing plastic deformation of the metal sheet at the welding point, which helps the welding process.

4. Form the Welding Point: Through current heating and pressure, the metal sheet at the welding point will instantly melt and bond together. In general, welding time is only tens of milliseconds, and welding can be completed.

5. Cooling and Curing: After the welding is completed, the metal piece will quickly cool and solidify, forming a solid connection. This welding method is called "instantaneous welding", because the welding time is very short. It is suitable for large-scale production and efficient welding.

In general, the principle of spot welder's working principle is simple and clear. The instantaneous welding of metal pieces can be achieved through current heating and pressure. In the field of industrial manufacturing and automobile manufacturing, spot welder is an indispensable device. It can quickly and efficiently complete metal welding work to ensure the quality and reliability of the product. With the continuous progress of technology, spot welder's performance and accuracy will be further improved, bringing greater benefits and development opportunities to the manufacturing industry.