WELDING & CUTTING
India
 
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TERROWELD CF
 
Low Heat Input Strength Joints
A nickel-alloyed electrode for welding and repairing of cast irons, e.g. S.G.lron, malleable and grey iron castings etc.
 
The electrode deposits a high strength weld metal combined with good toughness of the weld joint, thus making it suitable for joining cast iron to mild steel.
 
ALLOY BASE
Ni, Fe, Si, Mn
 
SPECIAL FEATURES
  • Strength joints at low heat
  • Less sensitive to contaminated iron. Excellent weld bead appearance
APPLICATIONS
Joining of cast iron components, welding of cast iron to steel, rectification and build-up of defective castings giving good colour matching. Repairing of complicated and crack sensitive castings involving hydrostatic pressure and dissimilar thickness, heavy sections and joints under restraint such as pumps, differential housing, cast iron dies etc.
 
PROPERTIES
UTS : 36-39 kg / mm2
 
WELDING PROCEDURE
  • Clean the weld area of all scales, grease and dirt
  • The smallest possible electrode diameter and the lowest possible current should be used to restrict the width of the HAZ
  • Skip welding sequence may be used to limit the heating of the base metal
  • Although preheating is not required in most cases, when welding thick sections and malleable irons, preheating to about 250-300°C is advisable to minimize the shrinkage stresses and cracking
CURRENT RANGE : (AC 50, DC+/-)
 
Size (mm) Length (mm) Current Range (Amp)
3.15 350 65-95
4.00 350 85-115
5.00 350 140-160
 
 
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