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MTVR-4801 dc spot welding machine

Welding machine MTVR-4801 is designed for contact spot welding by direct (rectified) current of metal structures and high-duty products.

Technological capabilities of this welding machine allow welding of a wide range of products. The thickness of the material to be welded depends on the material type and quality requirements to the welded joint.

The welding machine provides the diameter of the cast core of the welded point which corresponds to production instructions of aerospace and branch instructions with the increased requirements for the quality of the welded joint.

Welding thickness ranges

Low carbon steel 0.5+0.5 to 5.0+5.0 mm
Low alloy steel 0.5+0.5 to 3.5+3.5 mm
Stainless steel 0.5+0.5 to 3.0+3.0 mm
Titanium alloys 0.5+0.5 to 3.0+3.0 mm
Chromium-nickel alloys 0,3+0,3 to 1,5+1,5 mm
Copper alloys 0.5+0.5 to 1.0+1.0 mm
Aluminum alloys 0.5+0.5 to 1.5+1.5 mm

Advantages of the welding machine MTVR-4801

  • It is produced of Russian raw materials that have all the necessary certificates
  • High dynamic characteristics of the drive of the welding force
  • Uniform load on the grid by 3 phases
  • More efficient power consumption and higher efficiency compared to AC machines
  • DC power supply with 7000 A diodes
  • Liquid cooling of the welding current source and secondary circuit
  • The machine is equipped with a control system based on an industrial PC, which allows to:
  1. Differentiate the access rights of personnel (technologist / welder)
  2. Create and edit welding programs
  3. Log welding points
  4. Form the pulses of the welding current in the necessary shape
  5. Carry out a smooth and step-by-step adjustment of the welding current
  6. Stabilize the welding current when the mains voltage changes

Additional options:

  • Autonomous liquid closed cooling system
  • Autonomous compressor device
  • Electrodes for contact welding of various configurations
  • Assembly and welding devices 




         *Please pay attention that the technical specification and the appearance of the equipment placed on this web-site are only for informational purpose and are not a public offer. The producer reserves the right to make any changes.

         **Copying the data without permission of the web-site administration is prohibited.

Mains voltage at 50Hz frequency 3x380V
The highest secondary current 48 kA
Rated continuous secondary current 11,2 kA
Maximum power in case of short circuit 248 kVA
Power at 50% duty cycle 82 kVA
Compression force of electrodes:
- the largest at compressed air pressure of 0.5 MPa
- the smallest at compressed air pressure of 0.1 MPa

2000 daN
120 daN
Nominal stick-out 1200 mm
Nominal spacing 250 mm
Upper electrode stroke:
- full (working + additional)
- working

100 mm
5 to 30 mm
Limits of idle voltage adjustment 1.4 to 3.7 V
Welding power adjustment:
- stepped
- phase

16 steps
25 — 100 %
Electrode compression drive pneumatic straight
Cooling of current-carrying parts forced liquid
Overall dimensions of the machine (L×W×H), no more than 2750х1190х2610 mm
Weight, not more than 2700 kg
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