• Applications
  • Repairing and filling up of cavities of various kinds of cast iron products such as cylinder covers, motorbeds, casings and gears. Repairing of meehanite cast iron, alloy cast iron and malleable cast iron.
  • Characteristics on Usage
    • - W-NC is a graphite type coated electrode, depositing weld metal consisting of almost nickel.
    • - Hardening of heat affected zone is small and machining of the welds is comparatively easy.
    • - Therefore it is suitable for welding alloy cast iron of poor weldability, malleable cast iron and hydraulically pressured parts as well as common cast iron.
  • Notes on Usage
    • - Clean base metal before welding.
    • - If there is a possibility that cracking spreads, make the stopholes at both ends of repairing part.
    • - It is not necessary preheating and postheating in general but satisfactory results can be obtained by preheating at 100~200℃ in accordance with kind, shape and size of base metal.
    • - Keep bead length less than 50mm to disperse welding heat. Adopt back step, stepping stone or symmetry method by turns.
  • Sizes Available and Recommended Currents ( AC or DC ± )
  • Sizes Available and Recommended Currents ( AC or DC ± )
    Size mm (in) 2.6 (3/32) 3.2 (1/8) 4.0 (5/32)
    Length mm(in) 350 (14) 350 (14) 400 (16)
    F 60~90 80~120 120~150
  • Typical Chemical Composition of All-Weld Metal (wt%)
  • Typical Chemical Composition of All-Weld Metal (wt%)
    C Mn Si P S Ni Fe
    0.84 0.34 0.30 0.002 0.002 Rem 1.9
  • Typical Mechanical Properties of All-Weld Metal
  • Typical Mechanical Properties of All-Weld Metal
    T.S (N/mm²) Hardness (HRB)
    456 76
  • Welding positions
  • 용접자세