Common problems in the welding of precision spot welders: the welding point is not penetrated, and the welding spatters, which makes the spot welder unable to weld. Therefore, in actual use of the spot welding machine, the following items should be paid attention to.

　　1. Overheating of the spot welder:

　　1. Check whether the insulation resistance between the electrode holder and the body is poor, causing a local short circuit.

　　2. Check whether the inlet water pressure, water flow rate, and water supply temperature are appropriate, and whether the system is blocked by dirt, which causes the electrode arm to overheat due to poor cooling.

　　3. Check whether the contact surface of copper flexible joints, electrode tips, etc. is seriously oxidized, resulting in a serious increase in contact resistance and heating.

　　4. Check the welding thickness. Whether the load continuity rate meets the standard, so that the welding machine is overloaded and heated.

　　2. Splashes during welding of spot welder:

　　1. Check whether the current is too large or the pressure is too small.

　　2. Insufficient strength of the welding workpiece: the current is getting smaller and smaller during welding, and the welding is not strong.

　　3. The solder joints are not penetrated, and the nugget is poorly formed or not formed:

　　1. There is no penetration during spot welding and no lentil-like nugget structure. This kind of defect is dangerous, it will greatly reduce the strength of the solder joint.

　　2. Debug welding parameters. If it is confirmed that there is no problem with the parameters, you need to check the main power supply circuit, such as whether the power supply is sufficient and whether the welding transformer is damaged.