Conical twin screw barrel

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Conical twin screw barrel

1. Technical parameters

Hardness: HB240-280

Nitriding hardness: HV850-1000

Nitride depth: 0.45-0.7mm

Nitriding brittleness: ≤ grade 2

Surface roughness: Ra 0.4

Straightness of screw: 0.015mm

After nitriding, the surface hardness of chromium plating layer: ≥ 900HB

Chromium plating thickness: 0.05-0.10mm

Double alloy hardness: HRC50-65

Double alloy depth: 0.8-2.0mm


2.材料和工艺

38CrMoAIA

42CrMo

CW6M05Cr4v2

9Cr18M0V


High quality duplex stainless steel

Zinc 3 # steel

High quality powder metallurgy material


Cold and hot spraying hard metal process

Advanced nitriding process

Corrosion resistance. Wear resistant bimetal spraying process


3. Specifications

Conical twin screw and barrel parameters