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Film Blowing Machine Screw Barrel

產(chǎn)品介紹

Technology Index:
Material 38CrMoAIA Surface Roughness Ra0.4
Diameter Φ20-Φ300 Screw Straightness 0.015mm
L/D Ratio L/D=15~55 Cr-Plated Surface Hardness after Nitriding HV≥900HV
Tempering Hardness HB240°~280° Cr-Plating Layer Depth 0.05~0.10mm
Nitriding Layer Hardness HV850°~1000° Bimetallic Layer Depth 0.8~2.0mm
Nitriding Layer Depth 0.45~0.7mm Bimetallic Layer Hardness HRC56°~65°
(nickel-based alloys)
Nitriding Fragility ≤Grade Two

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