Bimetallic Tungsten Carbide screw barrels
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• Specification
  Screw diameter: Ø12-300MM L/D:15-45
  Barrel diameter:  Ø25-500MM      Length:300-1000MM

• Material
  Bimetallic Alloy Materials:Fe-based alloy,Ni-based alloy/Deloro alloy ,Co-based alloy,NiCo-based alloy 
  Tungsten carbide/Wolfram carbide
  Bimetallic Alloy level:Level A - containing Tungsten of 40%,Level B - containing tungsten of 25%,Level C - containing tungsten of 9.5%

  
  Bimetallic layer analysis

  38CrMoAlA: Cr, C, Si, Mn, Mo, Al, Ni, Cu, P, S
  40Cr: Cr, Mn, C, Si, Ni, S, P, Cu
  Stainless steel: Cr, Ni, Ti, Mn, N, Nb, Mo, Si, Cu
  SKD61: C, Si, Mn, Cr, Mo, V, S, P
  Ferrous alloy: Fe, Cr, Si, Ni, B
  Nickel alloy: Ni, Cr, Co, Wc, B
  Tungsten alloy: W, Ni, Fe, Cu

• Parameter

  Nickel alloy plating.treatment:

  Bimetallic Barrel Centrifugal Casting (Inlay Alloy)

  Bimetallic Screw: Plasma Alloy Coating Spraying

  Depth of Bimetallic Layer: >2mm

  Hardness of Bimetallic Layer: HRC55°-65°

• Feature

  Barrel: Painting a 2-3mm layer alloy inside with anti-friction, corrosion-resist, temperature-resist feature.compared with nitriding barrel, stay longer life for using.Good for producing special plastic such as engineering  plastic, polysulfone, PPO , PVC with high Calcium etc.

  Screw: adopting spray technology of HP/HVOP fully alloy covering. bimetallic screw with corrosion-resist is suitable for Nylon, PVC, PC,PMMA etc while bimetallic screw with anti-wear for Nylon fiber, magnetic powder, Aluminum magnesium powder, Bakelite injection molding etc.