Conical Twin Screw and Double Holes Barrel

Material: High quality alloy steel 1)38CrMoAlA(JIS SACM645) Heat treatment Nitriding treatment Sprayed corrosion-resistant and wear-resistant bimetallic layer Electroplated hard chrome layer Technical indicators Nitriding depth: 0.5~0.8mm Nitriding hardness: 900~1000Hv Nitride brittleness: less than one grade Surface roughness: Ra0.4 Screw straightness: 0.015mm After nitriding surface chromium plating hardness: greater than 950Hv Chromium plating thickness: 0.025~0.085mm Scope of application: PVC wood plastic, PE wood plastic, ultra-high molecular plate, unfired brick supporting plate, 1:2 and above high calcium gusset plate, high calcium pipe, high calcium profile, soft PVC sheet, PVC foam board and other common plastics, PP, PE, ABS, PVC, raw material granulation, production of pipe, profile, sheet and other products.