two-side circumgyrate parrallel twin-screw
Product Description
This series of two-side circumgyrate parrallel twin-screw & barrel are suit for manufa-cturing pip material,special shape material,plate material,sheet material,change plastic p-roperties and soft/hard PVC granule making,etc.PARALLEL TWIN-SCREW & BARREL STANDARDS:PX-Ø65/2、Ø80/2、Ø90/2、Ø105/2、Ø125/2、Ø146/2、Ø150/2Lenhth/Diameter Ratio:L/D=18-25The compression ratio of screw can be designed according to different raw materials a-nd products.TECHNICAL SPECIFICATIONS:Material : Quality 38CrMoAlAHardness After Hardening & Tempering : HB240-280Nitrided Hardness : HV850-1000Nitrided Case Depth: 0.45~0.7mmNitrided Brittleness: Less Than Grade 2Surface Roughness: Ra 0.4Screw Straightness: 0.015mmSurface Chromium-Plating''s Hardness After Nitriding:≥900HBChromium-Plating Depth: 0.05~0.10mmAlloy Hardness: HRC50-65Alloy Depth: 0.8~2.0mm