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What Inspections Do Spot Welders Need?
Sep 25, 2018

What does the spot welding machine need to do to check 1, step down the pedal welding machine does not work, the power indicator is not on: A. check the power supply voltage is normal; check the control system is normal. B. Check whether the foot switch contact, AC contactor contact, split shift switch is in good contact or burned. 2. The power indicator is on, the workpiece is pressed and not welded: a. Check whether the pedal stroke is in place and whether the pedal 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. Insufficient strength of welding workpiece: a. Check whether the electrode pressure is too small, check whether the electrode rod is tightened. 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. Abnormal sound of AC contactor during welding: a. Check whether the input voltage of AC contactor is lower than its own release voltage 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. Overheating of the welding machine: a. Check whether the insulation resistance between the electrode base and the body is bad, resulting in local short circuit. B. Check whether the inlet pressure, water flow, water supply temperature is appropriate, check whether the water system is blocked by dirt, resulting in poor cooling so that the electrode arm, electrode rod, electrode head overheating. C. Check whether the contact surface between the copper flexible connection and the electrode arm, the electrode rod and the electrode head is oxidized seriously, resulting in the increase of contact resistance and heating seriously. 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, making the welder overload and heating.