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 |