How To Use Spot Welder

1. When welding, the position of the electrode rod should be adjusted first, so that the electrode arms are kept parallel to each other when the electrode is just pressed to the weldment.

2. The number of current adjustment switch stages can be selected according to the thickness and material of the weldment. After the power is turned on, the power indicator should be on. The pressure of the electrode can be adjusted by adjusting the spring pressure nut and changing its compression degree.

3. After completing the above adjustments, you can turn on the cooling water before turning on the power to prepare for welding. The procedure of the welding process: the welding piece is placed between the two electrodes, step on the foot pedal, and the upper electrode is in contact with the welding piece and pressurized. When the foot pedal is further depressed, the power contact switch is turned on, so the transformer starts to work The circuit is energized to heat the weldment. When the pedal is released after welding for a certain period of time, the electrode rises. The power of the spring is used to cut off the power and then return to the original state. The single-point welding process is over.

4. Weldment preparation and assembly: Before welding the steel weldment, all dirt, oil, scale and rust must be removed. For hot rolled steel, it is best to remove the oxide scale by pickling, sandblasting or using a grinding wheel. Although uncleaned weldments can be spot welded, the service life of the electrodes is severely reduced, while the production efficiency and quality of spot welding are reduced. Welding can be directly applied to medium and low carbon steel with thin coating.