Screw and barrel of rubber machine
Product Description
Material selection of quality aluminum 38-Cr-Mo (38CrMOALA)
Cold feed pin barrel screw
Screw diameter: Φ60-Φ300
Aspect Ratio: L / D = 12 ~ 18
Cold feed rubber screw
Screw diameter: Φ30-Φ300
Aspect Ratio: L / D = 8 ~ 20
Hot feed rubber screw
Screw diameter: Φ40-Φ300
Aspect Ratio: L / D = 8 ~ 20
Quenched and tempered hardness: HB240 ° ~ 280 °
Nitride hardness: HV850 ° ~ 1000 °
Nitriding depth: 0.45 ~ 0.7mm
Nitriding brittleness: ≤ 2
Surface roughness: Ra0.4
Screw Straightness: 0.015mm
After nitriding the surface of hard chromium plating degree: ≥ 900HV
Chromium plating thickness: 0.05 ~ 0.10mm
Two-alloy hardness: HRC56 ° ~ 65 ° (alloy using nickel-based alloys)
Alloy depth: 0.8 ~ 2.0m
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