Screw Barrel for PVC Extruder


Product Description:
Steel Material 38CrMoALA, SKD61, SKD11, D2 etc.
Hardness after Heat Treatment HB240-280
Nitriding Treatment Time ≥ 96 hours
Surface Hardness 58-64 HRC
Nitrided Layer Thickness 0.5-0.8mm
Surface Roughness Ra0.4
Screw Straightness 0.015mm
Cr-Plated Surface Hardness after Nitriding ≥ 900HB
Chromium-Plating Layer Thickness 0.05-0.10 mm
Bimetallic Layer Hardness 58-65 HRC
Depth of Bimetallic Layer 0.8-2.0 mm

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