Product Description

The bimetallic parallel twin screw and barrel for many kinds of plastic extruder in many specifications. Abrasion resistant and corrosion resistant Material:High quality alloy steel 1)*8CrMoAlA 2)*2CrMo 3)9Cr*8MoV Technics:1)Heat-treatment 2)Nitriding treatment 3)Hard-chrome electroplated 4)Bimetallic-alloy coating spraying Technical parameter Nitriding depth:0.***0.*0mm Nitriding hardness:*******0HV Nitriding brittleness:Less than 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.**5mm The bimetallic parallel twin screw and barrel for many kinds of plastic extruder in many specifications. Abrasion resistant and corrosion resistant Material:High quality alloy steel 1)*8CrMoAlA 2)*2CrMo 3)9Cr*8MoV Technics:1)Heat-treatment 2)Nitriding treatment 3)Hard-chrome electroplated 4)Bimetallic-alloy coating spraying Technical parameter Nitriding depth:0.***0.*0mm Nitriding hardness:*******0HV Nitriding brittleness:Less than 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.**5mm