الوصف

The conical twin barrel for extruder in many specifications. Keywords:conical twin screw barrel, bimetallic screw barrel, extruder screw barrel The conical twin barrel Abrasion resistant and corrosion resistant Technics:1)Heat-treatment 2)Nitriding treatment 3)Bimetallic-alloy coating spraying Technical parameter Nitriding depth:0.***0.*0mm Nitriding hardness:*******0HV Nitriding brittleness:Less tha grade 1 Surface roughness:Ra0.4 Linearity of the screw:0.**5mm Hardness of the chromium plating after nitriding :more than **0HV Chrome plating thickness:0.****0.**5