single screw and barrels

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single screw and barrels
Posting date : Jul 21, 2009
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39-
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Screw and barrels for single screw -extruders Specifications:Ø15mm-Ø300mm Length/Diameter Ratio:15~55 Screw can be selected from ordinary,gradual, mutational,pinned,shielding,separating and exhausting types. Materials: Alloy-steel of high quality 1) 38CrMoAlA(JIS SACM645) 2) 9Cr18MoV Technical data: Nitrided Hardness: HV 900-1000 Nitrided Case Depth: 0.50mm-0.80mm Nitrided Brittleness: Less Than Grade 2 Surface Roughness: Ra 0.4 Screw Straightness: 0.015mm Surface Chromium-Plating's Hardness After Nitriding:≥900HB Chromium-Plating Depth: 0.05~0.10mm Alloy hardness: HRC50-65 Alloy depth: 0.8mm-2.0mm Advanced nitriding process Corrosion&Abrasion resistance bimetal spraying process

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