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Capacitor Discharge Projection Welding Machine

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We hold expertise in the manufacturing of Capacitor Discharge Projection Welding Machines. Operating on the principle of capacitor discharge, these capacitor discharge for projection welding machines use mains input power for controlling and charging capacitors that store the energy. The built in control further ensures that stored energy is always constant irrespective of the fluctuations in voltage.


  • The demand on input power (required for charging of capacitors) is less
  • Saves KVA demand and helps in reducing operational costs
  • Suitable for areas where voltage fluctuation is a common problem, availability of power is scarce & cost of high KVA installation is prohibitive
  • Welded parts are clean & undistorted as there is insufficient time for heat to pass on beyond the welding area, thus providing a smooth finish

Operating Process:

  • Stored energy when required is discharged into weldment via pulse transformer and weld is carried out in milliseconds
  • In process actual welding area is only molten & fused together
  • Preset pressure switch automatically maintain consistent weld quality
  • Welding electrodes are mounted in C-shaped quick response press mechanism
  • Hydraulic /pneumatic operation of electrode movement
  • Conservative design & use of proven components like electrolytic capacitors, solid-state switches, ensure long welding life & ease of operations

Usage by Welders: Welders use fabricated frame structure for housing:

  • Capacitor banks
  • Control circuits
  • Charging & discharging transformers

Please Note: All recommended electrode materials are suitable for welders.


  • Large scale reduction in KVA demand
  • Joint free of blackening & discoloration
  • No water-cooling required for electrodes
  • No effect of voltage fluctuation on quality of welds
  • Welding of similar & dissimilar metals
  • Minimum/ nil heating of components during welding operations
  • Maintenance costs of electrode / fixture are low
  • Provides possibility of welding heat sensitive parts
  • Less cost involved in installation & operation of machines


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