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Capacitor Discharge Spot Welding Machine

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We offer customers Capacitor Discharge Spot Welding Machine. These spot and projection welding machines are designed to perfectly operate on the principle of capacitor discharge and welders use mains input power only for control & charging the capacitors that store energy. The superior built in control also ensures that stored energy is always constant irrespective of voltage fluctuations. Further, the demand on input power required for charging of capacitors is less that results in saving of large KVA demand, hence bringing reduction in operational costs. Our capacitor discharge for spot welding machines are a welcome investment, particularly for areas where:

  • Voltage fluctuations are common
  • Availability of power is scarce
  • Cost of high KVA installations is prohibitive

Working Principle:

  • Stored energy when required is discharged into weldment via pulse transformer & weld is carried out in few milli-seconds
  • In the involved process only actual welding areas is molten & fused together
  • Welded parts are clean & undistorted (as there is insufficient time for heat to spread beyond welding area), thus providing a smooth finish to the weld
  • Preset pressure switch helps in automatically maintaining consistent weld quality
  • Welders use fabricated frame structure for housing capacitor banks, control circuits charging & discharging transformers
  • The welding electrodes mounted in C-shaped quick response press mechanism
  • Hydraulic/pneumatic operated and electrode movement
  • Conservative design & use of proven components like electrolytic capacitors and solid-state switches
  • Machines provide long welding life & ease of operations
  • All recommended electrode materials are suitable for these welders

  • Large scale reduction in KVA demand
  • Excellent aesthetics as there is negligible blackening at weld joint
  • Machine can run on Genset
  • Very effective for components requiring mark-less spot welding
  • No effect of voltage fluctuation on weld quality

  • Spot Welding of Sheets
  • Spot Welding of Utensils
  • Spot Welding


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