Bimetallic Barrel Single Screw and Barrel 

Specification: Screw diameter: 15mm-300mm Maximal length: 8000mm Barrel inner diameter: 15-300mm Maximal length: 4000mm Different bimetallic alloys are available for different raw materials. 1. Tungsten carbide screw and barrel 2. Wear resisting 3. Low power 4. Low noise level 5. High quality material Application: Injection molding machine, extrusion Base Materials: (1)38CrMoAlA(JIS SACM645) (2)42CrMo(AISI 4140) (3)9Cr18MOV 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 Experienced manufacture…