MFDC SPOT WELDING

Medium Frequency Direct Current Spot Welder: Replacing Traditional Arc and Gas Welding with Faster, Stronger Connections

how ERSM’s spot welder help you optimize your production

Spot Welding Machines: Fast, Precise, and Cost-Effective Metal Joining

Spot welding is an efficient and reliable welding process that joins metal pieces by applying heat and pressure to the contact points. Known for its fast welding speed and strong, durable welds, spot welding eliminates the need for filler materials or flux. This process is highly adaptable to fluctuations in power supply, making it ideal for high-volume production environments.

Advantages of Spot Welding:

Quick welding speeds and precise results without added materials.

Energy-efficient with reduced operational costs and shorter welding cycles.

Strong welds suitable for thin metals, including low-carbon steel and galvanized sheets.

Ideal for industries such as automotive manufacturing, electronics, and construction.

Spot welding is perfect for applications like high-strength steel welding, hot-formed steel welding, and resistance brazing in electrical components, offering a high-quality and cost-effective solution for your manufacturing needs.

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Medium Frequency Inverter MFDC Spot Welding machine

  • Fast Welding Speed & Strong Welds: Delivers fast welding with strong welds and no need for flux additives.
 
  • Adaptable to Power Fluctuations: It handles power grid fluctuations and voltage drops well, storing energy in the inverter to supply the load.
 
  • Precise Current Control: Provides faster, more accurate current control, allowing better analysis compared to low-frequency systems.
 
  • Fast Current Response: Medium frequency technology adjusts welding current up to 20 times faster than traditional methods.
 
  • Reliable Welding Process: Offers a more reliable welding process, with DC welding better for certain resistance welding applications.
 
  • Versatile Applications: Suitable for welding low-carbon steel, galvanized sheets, high-strength steel, hot-formed steel, nut projection welding in automotive manufacturing, and brazing copper wires in electrical industries.

See for yourself: the Video of the ERSM® MFDC Spot Welder

The MFDC spot welder offers a more reliable welding process, especially in applications involving resistance welding. It uses DC welding for certain metals, which delivers better results compared to AC welding systems, ensuring stronger and more consistent welds.

Medium Frequency Dc Discharge Curve

The international advanced MFDC resistance welding technology and the full range of MFDC spot and projection welding machines.

Main Specification
Rated power(KVA)110
Duty cycle(%)20
Sec.voltage of transformer(V)12.5
Diameter*stroke(mm)Փ140*100
Weld force(KN/0.5MPa)7.7
Usage Requirements
Power supplier380V/50Hz/3Ph
Max.primary current (A)100
Specification of power cord(mm2)3*25+2*16
Air pressure(MPa)≥0.6
Specification of inlet jointՓ13.5-G1/2
Cooling water flux (L/min)8
Pressure of the cooling water(MPa)0.15~0.3
Specification of colling water inlet jointՓ16.5-G1/2

International advanced level of
metal connection technology

A metal connection method that does not require welding materials

spot weld

SPOT WELING

SPR

CLINCHING

SELF CLINCHING

STUD WELDING

INSERTION

Frequently Asked Questions

The medium frequency inverter spot welding machine offers numerous benefits, including 50% energy savings compared to conventional power frequency systems, fast welding speed, strong welds without the need for flux, and precise current control. It is also adaptable to power grid fluctuations, with low power consumption, reduced voltage distortion, and compact design. Additionally, it maintains high power factor (over 95%), improving efficiency and reducing operational costs.

This welding machine can effectively handle power grid fluctuations and voltage drops, thanks to the inverter’s ability to store and supply energy to the load. This ensures that the welding process remains stable and consistent, even when power conditions are not ideal.

Yes, this welding machine is highly versatile and suitable for welding a wide range of metals, including low-carbon steel, galvanized sheets, high-strength steel, hot-formed steel, as well as performing nut projection welding in automotive manufacturing and resistance brazing for copper wires in the electrical industry.

This machine reduces operational costs by improving energy efficiency, shortening welding cycles, and preventing damage to the thyristor system, which is common in traditional machines. This leads to energy savings and reduced maintenance costs, making it an ideal choice for large-scale, high-volume production environments.

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