Zhoushan Jinmao Machinery Manufacturing Factory

Segment screw and barrel Screw elements for counter-rotating parallel twin screw extruder Specification: Parallel twin screw diameter: Φ 18-Φ 177mm The building block screw consists of core spindle and several hollow screw segments which can be replaced easily for different materials. The mixing components adopts building block type, which can be mounted and replaced conveniently. Such design makes it possible to process several kinds of materials with one screw. Base Materials: W6Mo5Cr4V2 38CrMoAlA(JIS SACM 645) 42CrMo(AISI 4140) S45C Bimetallic Alloy Materials: 1)Fe-based alloy 2)Ni-based alloy 3)Co-based alloy 4)NiCo-based alloy 5)Wolfram carbide Bimetallic alloy level: Alloy powder including 40% Wolfram Carbon Alloy powder including 25% Wolfram Carbon Alloy powder including 9.5% Wolfram Carbon Processing Technology: Heat treatment High-frequency quenching Nitriding treatment Hard-chrome electroplating Bimetallic alloy welding Technical Parameter: Nitrided layer depth:0.50-0.80mm Nitrided hardness: 950-1100HV Nitrided brittleness: Less than 2 level Surface roughness: Ra 0.4μm Linearity of screw: 0.015mm/m Hard-chrome plating hardness after nitriding: ≥950HV Chrome-plating layer depth: 0.025~0.10mm Bimetallic layer depth: 3-5 mm We can manufacture all types of screws and barrels according to clients’ requirement.