WELDING & CUTTING
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OK TUBRODUR 15.73
 
Flux-Cored Wire for Can Cast Roll Rebuilding
OK Tubrodur 15.73 is a versatile hardfacing flux-cored wire producing a highly alloyed steel deposit, which is especially suitable for applications involving wear at elevated temperatures. This special alloy is resistant to fatigue and impact at those temperatures owing to its hot hardness properties.
 
1.6 and 2.4 mm wires are to be used with a shielding gas - either C02 or Ar + 20%C02 mixture. 3.0 and 4.0 mm wires are for the submerged arc process and should be used with OK Flux 10.61.
 
Machinable with only cemented carbide tools before cooling below about 100°C. On cooling to room temperature the machinability is considerably poor and reheating to 100°C does not improve the machinability significantly.
 
ALLOY BASE
Fe, C, Mn, Cr, Ni, Mo, Nb, V
 
SPECIAL FEATURES
  • Roll reclamation - concast and other hot rolls
  • Non-scaling and non-sticking characteristics
APPLICATIONS
Hardfacing of different kinds of shafts, valve seats, concast rolls and any other part subjected to wear and corrosion at higher temperatures.
 
PROPERTIES
Hardness : 45-51 HRC
 
WELDING PROCEDURE FOR SUBMERGED ARC WELDING
  • OK Tubrodur 15.73 should be deposited on DC (+/-). Negative polarity gives a higher deposition rate and less fusion of the base material and is recommended when the minimum possible dilution of the weld metal is desired
  • Except at the start, preheat is not required while hardfacing solid carbon steel shafts having diameter upto about 200 mm
  • When multi-pass welding is being done, the interpass temperature should preferably not fall below 300°C
CURRENT RANGE : (DC+/-)
 
Diameter
(mm)
Welding
position
Current
(Amps)
Voltage
(Volts)
1.6 F.H 150-300 24-30
2.4 F.H 280-460 24-32
3.0 F 300-450 25-33
4.0 F 400-600 30-36
 
 
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