Extruder Bimetallic Screw Barrel PVC Pipe Extrusion Screw Barrel

Twin screw barrel, conical twin screw barrel, PVC pipe extruder screw barrel, Plastic Extruder Bimetallic Screw and BarrelSpecification:Screw diameter: 15mm-300mmMaximal length: 8000mmBarrel inner diameter: 15-300mmMaximal length: 4000mmDifferent bimetallic alloys are available for different raw materials.Base Materials:(1)38CrMoAlA(JIS SACM645)(2)42CrMo(AISI 4140)(3)9Cr18MOVBimetallic alloy materials:(1)Fe-based alloy(2)Ni-based alloy/Deloro alloy(3)Co-based alloy(4)NiCo-based alloy(5)Tungsten carbide/Wolfram carbideTechnics:Heat treatmentHigh-frequency quenchingNitriding treatmentHard-chrome electroplatingBimetallic alloy weldingBimetallic alloy centrifugal castingTechnical parameter:Nitrided layer depth: 0.5-0.8mmNitrided hardness: 900-1000HVNitrided brittleness: Less than grade 1Surface roughness: Ra0.4Linearity of screw: 0.015mmHard-chrome plating hardness after nitriding: ≥ 950HVChrome-plating layer depth: 0.025-0.085mm…