single screw and barrel for HDPE film.

Raw Material

1 38CrMoAIA(JIS SACM645)

2 42CrMo(JIS SCM440)

3 9Cr18MoV

Heat treatment

· Nitriding treatment

· Electroplated hard chromium coating

· Spray coating anticorrosion

· Wear resistant bimetallic coating

Technical Parameter

· Quenching and Tempering Hardness HB240~280

· Hardness of Nitriding HV900~1020

· Deepness of Nitriding Layer 0.5~0.8mm

· Nitriding Brittleness ≤Grade 1

· Surface Roughness: 0.045mm

· Screw Alignment: 0.015mm

· Hardness of Chrome Plating Coating after Nitriding ≥950HV

· Thickness of Chorme Plating Coating 0.03~0.08mm

· Hardness of Bimetallic Alloy HRC55-62

· Deepness of Bimerallic Alloy 1.5~2.0mm

· Hardness of Tungsten Carbide Layer HRC70-75

· Thickness of Tungsten Carbin Layer 0.8~1.5mm

· Deepness of Titanizing Layer 0.05~0.10mm

Process

· Laser Coating Tungsten Carbide

· PTA Melt-Welding Alloy

· Centrifugal Mould Bimetallic Alloy

· Advanced nitrogen oozes handicraft

· Vacuum Quenching

· Titanizing

· Nickel Plating

· Chorme Plating