40000 uf Capacitor Welding Machine 30KVA 380V 50Hz

Product Specification

Product Parameters

Product Introduction

The HFTR-20000 is an industrial-grade, high-power spot and projection welding machine. The system stores electrical energy in a capacitor bank and releases a high welding current within milliseconds. It resolves common manufacturing challenges such as incomplete penetration in high-strength steel, difficulties in welding highly conductive non-ferrous metals, and grid voltage fluctuations caused by high-power equipment. By utilizing a low-power charging and high-power discharging process, the machine delivers a peak short-circuit current of 150KA while minimizing power consumption and reducing grid requirements, serving as a reliable tool for high-standard production lines.

Product Selling Points

150KA Peak Current for Thick Plates and Projection Welding

The maximum short-circuit current of 150KA breaks through surface oxide layers and impurities instantly to form a solid molten nugget. It ensures that the tensile strength of joints meets strict engineering standards for both multi-layer high-strength steel welding and large-specification nut/bolt projection welding.

40000μF Capacitor Capacity for Stable Continuous Discharge

Equipped with a high-capacity 40000μF capacitor bank, the machine maintains stable energy reserves. Even under high-frequency and fast-paced continuous spot welding conditions, the energy output wave remains accurate and consistent without degradation.

Millisecond-Level Fast Discharge to Prevent Deformation and Discoloration

The welding energy is completely released within a few milliseconds. The heat is highly concentrated at the center of the weld joint, and the process completes before thermal energy can conduct to the surrounding areas. This prevents surface discoloration and structural warping, eliminating the need for post-weld grinding.

Low Demand on Factory Power Grids

Traditional high-power welding equipment draws large instantaneous power, which can lower factory grid voltage. The HFTR-20000 draws power from the grid smoothly and slowly during the charging phase. It operates reliably even in facilities with limited electrical power capacity without affecting surrounding machinery.

Product Application Fields

This equipment is designed for high-difficulty and high-strength metal welding applications across several major industries:

Automotive and Component Manufacturing

Welding of high-strength steel structural components, joining of hot-stamped steel plates, and high-strength projection welding of automotive nuts and bolts.

New Energy Battery and Power Storage

Reliable connection and welding of highly conductive non-ferrous metals such as copper busbars, aluminum busbars, and nickel tabs.

Low-Voltage Electrical and Metal Fabrication

Silver contact welding, circuit breaker component assembly, and spot welding for sheet metal enclosures requiring high-quality surface finishes.

HAIFEI Manufacturing Advantages

Digital Control of Charging Voltage

The Haifei intelligent control system regulates the capacitor charging voltage with single-digit precision. Fluctuations in external grid voltage do not affect the internal stored energy, ensuring identical welding quality from the first workpiece to the last.

50% Rated Duty Cycle

A 50% duty cycle allows the machine to support long-duration, high-intensity operations. It can be integrated into automated flexible welding cells or robotic production lines to match fast manufacturing cycles.

Reduced Consumables and Downtime Costs

Due to the short discharge time, the copper electrode tips experience low thermal radiation and minimal metal adhesion. The slower wear rate reduces the frequency of electrode dressing and replacement, decreasing production line downtime.

FAQ

Q1:Does this equipment generate heavy splash during welding? How is the splash controlled to protect the workpiece surface?

A:The welding splash generated by an energy storage welder is typically much lower than that of traditional AC welders. Due to the extremely short discharge time (in milliseconds), the energy is released instantanously and strictly concentrated, preventing extensive thermal diffusion of the metal. Furthermore, by adjusting the pre-pressing time and implementing a proper pressure curve in the control system, close contact between the electrodes and the workpiece is ensured before discharging, minimizing splash and protecting the workpiece surface from burns.

Q2:What are the specific environmental temperature and humidity requirements for the welding workshop?

A:The equipment integrates industrial-grade control boards and capacitor components. It is recommended to maintain the working environment temperature between 0°C and 40°C, with a relative humidity not exceeding 85% (non-condensing). During high-temperature or high-humidity seasons, the workshop should maintain proper ventilation or be equipped with air conditioning to ensure the long-term stable operation of the electronic components and the capacitor bank.

Q3:Is it complicated to adjust the welding parameters if workpieces of different thicknesses or materials are used?

A:The operation is highly intuitive. The Haifei control system supports the storage of multiple parameter recipes. Technicians only need to adjust digital parameters such as charging voltage (to control energy output), pre-pressing time, and holding time directly on the touchscreen, or directly recall pre-saved process recipes. The setup process can be completed within a few minutes.

Q4:What determines the electrode pressure when welding high-strength steel or thick plates? What are the consequences of insufficient pressure?

A:The electrode pressure is primarily determined by the integrated pneumatic cylinder and the input air supply pressure, which can be precisely regulated via a pressure reducing valve. When welding high-strength steel or thick plates, insufficient electrode pressure will result in excessive contact resistance, leading to severe splash, surface burns, or defective welds due to the inability to form a proper molten nugget.