WELDING & CUTTING
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OK 84.76
 
Sugar Mill Roller Dry and Wet Arcing
OK 84.76C is a basic coated high efficiency high chromium carbide type electrode for roughening the wet mill rollers used in the sugarcane crushing. It provides an electric arc of spray type, depositing weld metal in the form of fi ne globules in the grooves of the mill roll thus increasing its gripping and dragging power.
 
Enormous rollers are used in the sugarcane crushing process, which are subjected to excessive wear during the season. These rollers have to be continuously roughened, even when the crushing is in full swing. These are smothered in crushed, sludgy cane and the surface is wet. OK 84.76C accommodate these conditions and deposit a dispersion of small, hard and wearresistant globules that fastens to the sidewalls of the ridges of the roller.
 
It can be observed that the roughness created on the surface of the mill roll increases its productivity considerably, permitting better utilization of the grounded material, which in turn increases the quantity of the sugarcane to be processed.
 
SPECIAL FEATURES
  • Spray type arc for better distribution of the globules
  • Good bonding with the rollers, even in wet condition
HARDNESS : 57 – 64 HRC
 
WELDING PROCEDURE
  • Hold the electrode at right angles to the fl ans of the profile
  • Use "cold welding" technique; avoid excessive heat in the weld area
  • Use DC positive, for better results
DEPOSITION DATA
Deposition rate : 2.2 kg / hr
Deposition Effi ciency : 69%
Metal Recovery : 205%
 
WELDING CURRENT : DC +/- , AC 70
 
Size (mm) Length (mm) Current Range (Amp)
3.15 450 110-130
4.00 450 160-210
 
 
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