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Twin Screw

Twin Screw

Overview

Twin Screw, listed by Zhejiang Zhongyang Screw Manufacturing Co., Ltd in Zhoushan, Zhejiang. Published figures include materials (alloy sleeve/liner) 4Cr5MoSiV1 (SKD61, H13) C2 D2, surface roughness Ra 0.4 μm and linearity 0.015 mm/m.

Technical specifications

Materials (Screw/Barrel Base)38CrMoAlA (SACM645) 31CrMoV9 (1.8519) 34CrAlNi7 (1.8550)
Materials (Alloy Sleeve/Liner)4Cr5MoSiV1 (SKD61, H13) C2 D2
Surface RoughnessRa 0.4 μm
Linearity0.015 mm/m
Nitrided HardnessHV 850 – 1000
Nitrided Depth0.5 – 0.8 mm
Chrome Coating Thickness0.03 – 0.05 mm

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