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Seven Troubleshooting Of Spot Welding Machine
May 17, 2018

Spot welding machine troubleshooting 1, foot pedal welding machine does not work, power indicator light is not bright: A. check power voltage is normal; check the control system is normal. B. check foot switch contact points, AC contactor contacts and split shift switches for good contact or burnout. 2, the power indicator light is bright, the workpiece is tightly pressed and not welded: A. checks whether the foot pedal is in place, and whether the foot switch is in good contact. B. check whether the spring screw of the pressure bar is adjusted properly. 3. There should be no splash during welding: A. check whether the electrode head is oxidized seriously. B. check whether the welding workpiece is seriously corroded and poor contact. C. check whether the switch is too high. D. check whether the electrode pressure is too small and whether the welding procedure is correct. 4, solder joint indentation serious and extrusion: A. check whether the current is too large. B. check whether the welding workpiece is uneven. C. check whether the electrode pressure is too large, the shape of the electrode head and the cross section are suitable. 5, welding workpiece strength is insufficient: A. check the electrode pressure is too small, check whether the electrode rod is tight. B. check whether the welding energy is too small and whether the welding workpiece is seriously corroded, so that the solder joints are not properly contacted. C. checks whether there is too much oxide between the electrode head and the electrode rod, between the electrode rod and the electrode arm. D. checks whether the electrode head cross section is increased due to wear, resulting in reduced welding energy. E. to check whether the interface between electrode and copper is seriously oxidized. 6. The abnormal noise of the AC contactor during welding: A. checks whether the input voltage of the AC contactor is lower than the self releasing voltage of 300 volts during welding. B. check whether the power lead is too long or too long, resulting in too much voltage drop. C. check whether the network voltage is too low to work properly. D. check whether there is a short circuit in the main transformer, resulting in too much current. 7, welder overheating phenomenon: A. check whether the insulation resistance between the electrode holder and the body is bad, causing partial short-circuit. B. checks whether the inlet pressure, water flow and water supply temperature are appropriate, check whether there is dirt in the water system and cause the electrode arm, electrode, and electrode head to overheat because of the bad cooling. C. checks whether the contact surface of copper soft joint and electrode arm, electrode rod and electrode head is seriously oxidized, resulting in serious contact resistance and severe fever. D. check whether the electrode head cross section is increased due to excessive wear, which makes the welder overload and heat. E. check whether the welding thickness and load continuity rate exceed the standard, causing the overheating of the welder and the first failure. The welder of the spot welder presents an overheating phenomenon. First, check whether the insulation resistance between the electrode holder and the body can be bad, and form partial short-circuit. Second, check the water pressure, water flow, water temperature can be suitable, check whether the water system can be blocked by dirt, the formation of the formation of the electrode, electrode, electrode, electrode head overheating because of cooling. Third, check whether the copper soft joint and electrode arm, electrode rod and electrode head can oxidize tension, form war resistance and increase heat stress. Fourth, check whether the electrode head cross section can increase too much due to wear, which makes the welder overload and heat. Fifth, check whether the welding thickness and load continuity rate exceed the standard, so that the welder overload and heat. Second major faults, spot welding machine solder joints indentation tension and extrusion. First, check whether the current is too large. Second, check whether the welding workpiece can be uneven. Third, check whether the electrode pressure can be too large, and the shape and cross-section of the electrode can be suitable. Third major faults, spot welder foot pedal welding machine does not work, power indicator light is not bright. First, check whether the power supply voltage is normal; check whether the control system can be normal. Second, check the foot switch contact points, switch the contact points of the contacts, and the split shift switches can fight well or burn. Fourth major faults, the spot welder should not splash when welding. First, check the electrode head to oxidize the tension. Second, check whether the welding workpiece can be strained and rust is bad. Third, check the adjustment switch whether the position is too high. Fourth, check whether the electrode pressure is too small and whether the welding steps can be accurate. Fifth big faults. When the spot welder is welded, the switch is abnormal. First, check whether the incoming voltage of the switching device can be less than 300 volts when it is soldering. Second, check whether the power leads can be too long and form a large line voltage drop. Third, check whether the network voltage is too low to work properly. Fourth, check whether there is a short circuit in the main transformer, so that the current is too large. Sixth major faults, spot welder welding workpiece strength is insufficient. First, check whether the electrode pressure is too small, check whether the electrode rod can be fastened. Second, check whether the welding energy can be too small, whether the welding workpiece can be corroded or not, so that the solder joints will not be able to fight properly. Third, check whether there is too much oxide between electrode head and electrode rod, electrode rod and electrode arm. Fourth, check whether the electrode section can be increased due to wear and reduce the welding energy. Fifth, check whether the electrode and copper soft joint and joint surface can be oxidized. The seventh major failure, the power indicator light is bright, and the workpiece is compact without welding. First, check whether the foot pedal stroke can be in place, and whether the foot switch can fight well. Second, check whether the pressure bar spring screws can be properly mediated.