screw barrel for rubber machine

Brief introduction of design Depth of Nitrated Layer: 0.5-0.8mm Hardness of nitration: 900-1020Hv Fragility of nitration: Less than grade 1Surface roughness: Ra 0.4um Hardness of Cr-coating Layer: ≥950Hv Thickness of Cr-coated Layer: 0.03-0.08mm Hardness of Bimetallic Layer: HRC55-72 Depth of Bimetallic Layer: >2mm Choosing mutiple-start design for feed zone, good for feeding of rubber powder.Applying in manufacturing Butyl rubber, natural rubber, nitrile rubber and styrene butadiene rubber. We supply various types of screw barrel ,if you have any inquiry,do not hesitate to inform us.