Technical Parameter of Injection Screw Barrel
Base Material 1) 38CrMoAlA(JIS SACM645);2) Cr12MOV(JIS SKD-11) ;
3) 4Cr5MoSiV1(JIS SKD-61) ;4) 42CrMo(AISI 4140)
Bimetallic Alloy Materials 1) Fe-based alloy 2) Ni-based alloy/Deloro alloy
3) Co-based alloy 4) NiCo-based alloy
5) Tungsten carbide/Wolfram carbide
Double-alloy level Level A – containing Tungsten of 40%
Level B – containing tungsten of 25%
Level C – containing tungsten of 15%
Surface Treatment Heat Treatment
High Frequency Treatment
Nitriding treatment(120 Hours):
Depth of Nitrided Layer: 0.5-0.8 mm
Hardness of Nitrided Layer: 900-1020Hv (HRC56°-65°)
Hard Chrome Plating treatment:
Thickness of Hard Chrome Plating Layer: 0.05-0.10mm
Hardness of Hard Chrome Plating Layer: ≥950HV
Nickel alloy plating.treatment:
Bimetallic Barrel/Cylinder: Centrifugal Casting (Inlay Alloy)
Bimetallic Screw: Plasma Alloy Coating Spraying
Depth of Bimetallic Layer: 2mm
Hardness of Bimetallic Layer: HRC55°-72°
Spraying corrosion wear-resisting dual metal layers
