What are the common problems in precision spot welding machine welding?

Common problems in the welding of precision spot welding machines: the solder joints are not penetrated, and the spatter during welding causes the spot welding machine to fail to weld. Therefore, in the actual use of spot welding machine, should pay attention to the following matters.

1. spot welding machine overheats:

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

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

3. Check whether the contact surfaces such as copper flexible connection and electrode head are seriously oxidized, resulting in serious increase of contact resistance and heating.

4. Check the welding thickness. Whether the load continuous rate is up to standard, so that the welding machine is overheated.

2. spot welding machine has spatter during welding:

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

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

3. welding spot is not penetrated, nugget formation is poor or not formed:

1, spot welding is not penetrated, no lentil-like nugget structure. This 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 circuit, such as whether the power is sufficient and whether the welding transformer is damaged.