65/132 conical twin screw for extruder machine/double screw with wear resistance and anti-corrosion

Extrusion Twin Screw & Barrel Screw Diameter 55/110mm  45/90mm  65/132mm  92/188mm Application Sheet  Plate (door, windown,) Plastic processed Plastic  (wood) Technical Parameter Nitride Case Depth 0.5mm-0.8mm Nitride Hardness 1000-1100HV Nitride Brittleness ≤Grade One Surface Roughness Ra0.4um Screw Straightness 0.015mm Alloy Hardness HRC68-72 Alloy Depth 0.5mm-0.8mm Chromium Coating Thickness   0.025~0.10mm Material & Technologies SKD61(H13) Quality 38CrMoAIA (41CrAIMo7) Gr12MoV Quality Duplex Stainless Steel 42CrMo Quality Powder Metallurgy Materials          40Cr Hard Metal Cold/Thermal Spraying Technology Zinc 3# Steel  Advanced Nitriding Technology Anti-corrosion and Wear-resisting Duplex Metal Spraying Technology Technological Process 1.Rough Machining 2.Quenching and Tempering 3.Finish Machining 4.Nitriding 5 Sprey conating Bimetallic 6.Screw polishing REMARK: 1.    Screw structure, compression ratio and material…