Energy storage spot welding machine

Capacitor Storage Spot Welder, Brand: Shanghai Haojing. Capable of welding common ferrous metals like steel and iron, as well as non-ferrous alloys such as stainless steel, copper, silver, and nickel. Also performs dissimilar metal welding, high-strength steel welding, hot-formed steel spot welding, and stud welding. Delivers high weld strength and aesthetically pleasing weld points. All Shanghai Haojing capacitor storage spot welders feature digital control via a user-friendly touchscreen interface for intuitive operation. Machine performance can be expanded through PC programming. Custom fixture designs are available to accommodate diverse workpiece welding requirements, and automated special-purpose machines can be engineered to enhance production efficiency.
Product Introduction:

Capacitor-storage spot/projection welders operate by pre-charging high-capacity capacitors via a smaller transformer, then discharging the stored energy through a high-power welding transformer to join components. The key advantage of capacitor-storage spot welding machines lies in their short discharge duration and high instantaneous current, resulting in minimal post-weld thermal effects such as deformation and discoloration. Low-power models are ideal for precision component welding, while high-power units excel at multi-spot welding, ring welding, and sealing applications.

Product Features:

1. Low grid requirements with minimal impact on the power supply
Operating on the principle of charging capacitors via a low-power transformer before discharging through a high-power resistance welding transformer, this machine remains largely unaffected by grid fluctuations. Its low charging power also results in significantly less grid impact compared to AC spot welders or secondary rectifier spot welders with equivalent welding capacity.
2. Short discharge time, minimal heat affect zone
With discharge durations under 20ms, the welding process completes before generated resistive heat can conductively spread, minimizing deformation and discoloration of welded parts.
3. Stable welding energy
Charging ceases only when the voltage reaches the preset value before transitioning to discharge welding, ensuring minimal energy fluctuation and consistent weld quality.
4. Ultra-high current capability, ideal for multi-spot, ring projection welding, and pressure-sealing projection welding processes
5. No water cooling required, saving energy consumption
Extremely short discharge times prevent overheating during prolonged operation. The discharge transformer and secondary circuits of energy storage welders rarely require water cooling.

Product Applications:

Beyond welding common ferrous metals like steel, iron, and stainless steel, energy storage spot welders are primarily used for bonding non-ferrous metals such as copper, silver, nickel alloys, and dissimilar metal welding. They find extensive use across industrial production and manufacturing sectors including: construction, automotive, hardware, furniture, home appliances, kitchenware, metal utensils, motorcycle components, electroplating, toys, lighting fixtures, microelectronics, eyewear, and more. Energy storage projection welders also serve as a highly reliable welding method for high-strength steel, hot-formed steel spot welding, and nut projection welding in the automotive manufacturing industry.