how to use the indentation machine:
1. indentation machine should first adjust the position of the electrode rod when welding, so that when the electrode is just pressed to the weldment, the electrode arms should be kept parallel to each other.
2. the selection 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 light should be on. the electrode pressure can be adjusted by adjusting the spring pressure nut and changing the compression degree of the identification machine.
3. after completing the above adjustments, you can turn on the cooling water first and then turn on the power to prepare for welding. indentation machine in the welding process: the weldment is placed between the two electrodes, the foot pedal is pressed, and the upper electrode is brought into contact with the weldment and pressurized. when the foot pedal is continued to be pressed, the power contact switch is turned on, and the transformer starts the working secondary circuit is energized to heat the weldment. when the foot pedal is released after welding for a certain period of time, the electrode rises, the power of the spring is first cut off and then restored to the original state, the single-point welding process is over.
4. weldment preparation and assembly of indentation machine: steel weldments must be cleaned of all dirt, oil, oxide scale and rust before welding. for hot-rolled steel, the welded area is first pickled, sandblasted or cleaned with a grinding wheel . although uncleaned weldments can be spot welded, the service life of the electrode is severely reduced, and the production efficiency and quality of spot welding are also reduced. for medium and low carbon steel with a thin coating can be directly welded.