parallel twin screw and barrel

The bimetallicparallel twin screw and barrel for many kinds of plastic extruder in many specifications. Abrasion resistant and corrosion resistant Material:High quality alloy steel 1)38CrMoAlA 2)42CrMo 3)9Cr18MoV Technics:1)Heat-treatment 2)Nitriding treatment 3)Hard-chrome electroplated 4)Bimetallic-alloy coating spraying Technical parameter Nitriding depth:0.50-0.80mm Nitriding hardness:900-1000HV Nitriding brittleness:Less than grade 1 Surface roughtness: Ra0.4 Depth of nitration case:0.4-0.7mm Hardness of nitration:HV900-1060 (HRc56°-65°) Roughness of the surface:Ra 0.4μm Screw straightness: 0.015mm/m Chrome plating thickness: 0.01-0.1mm Bimetal coating thickness 1.5-2.0mm Material: Base material 38CrMoAlA, Welded inlay on the flight, prolong life of screw. Easy wearing parts of barrel feed inlet made from imported anti-wear alloy can be improvde abrasion performance. Twin screw and barrel made: CINCINNATI, BATTENFELD, KRUSSMAFFEI, BAUSANO and AMUT model spares