PE blowing film screw barrel, PE film extrusion screw barrel, bimetallic screw barrel, barrier screws, plastic extrusion screw barrel Specification: Screw diameter: Ø 20mm-Ø 220mm Mould clamping force: 250T-3200T Shot weight: 30G-30000G Products could appeal in different mold weight; Different material, different portion, different mold design. Base Materials: (1)38CrMoAlA(JIS SACM645) (2)42CrMo(AISI 4140) (3)4Cr5MoSi V1 (JIS SKD-61) 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 Technics: Heat treatment High-frequency quenching Nitriding treatment Hard-chrome electroplating Bimetallic alloy welding Bimetallic alloy centrifugal casting Technical parameter: Nitrided layer depth: 0.5-0.8mm Nitrided hardness: 900-1000HV Nitrided brittleness: Less than grade 1 Surface roughness: Ra0.4 Linearity of screw: 0.015mm Hard-chrome pl…

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