New series of torches for hardening “DONMET” 227

The design-engineering bureau of “DONMET” plant at the request of PRAO “Zaporozhkran”, Ukraine, has developed a new series of torches for hardening “DONMET” 227.

The torches are designed for hardening the rolling surface of travel wheels with a diameter of 250 up to 820 mm.

  • work on a mixture of oxygen and natural gas (methane);
  • a wide range of standard sizes of heads for wheels of different sizes
  • an economically viable alternative to hardening via high-frequency current
  • water cooling of the head to prevent overheating during prolonged operation.

For higher efficiency, the torches can be used in sets of several torches simultaneously.

Torch model,  order No. 227.000.00 227.000.01 227.000.02 227.000.03 227.000.04 227.000.05
Torch size, mm 150 160 130 110 90 75
Hose ID, mm 20 / 20
Heating area L x H ( at the outlet openings ), mm 133 х 22 142 х 22 118х22 100х22 78х22 67х22
Overall dimensions no more than, mm 150х50х1000 160х50х1000 130х50х1000 110х50х1000 90х50х1000 75х50х1000


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