High Corrosion Resistance Single Screw and Barrel for Rubber Extruder Machine

Diameter of cold feed screw and barrel: Φ 30mm- Φ 300 mm Diameter of pin screw and barrel: Φ 75mm- Φ 200 mm L/D ratio: 12-18 Base Materials: (1)38CrMoAlA(JIS SACM645) (2)42CrMo(AISI 4140) (3)4Cr5MoSi V1 (JIS SKD-61) (4)9Cr18MOV (5)HPT 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 plating hardness after nitriding: ≥ 950HV Chrome-plating layer depth: 0.025-0.085mm Bimetallic layer depth: 3mm Warranty and service: 1 year Focus on quality and service. Experienced manufacturer, we w…