Conical(Parallel)Twin Screw&Ballel
Conical(Parallel)Twin Screw&Ballel


Conical twin-screw series:
Professional equipment, precision production, all kinds of screw barrel are made of high quality alloy steel 38CrMoALA manufacturing, product after nitriding by the anion has a very high wear and corrosion resistance, and increased life expectancy and so on, can replace imported products. Strict implementation of the technical indicators are "JB/T8538-1997" and the ISO9002 standards.
Screw the compression ratio according to different products and different formulations of the design.

Product specifications and technical indicators:
Screw barrel Specifications:
Ø45/90, Ø45/100, Ø50/105, Ø51/105,
Ø55/110, Ø60/125, Ø65/120, Ø65/132,
Ø68/143, Ø70/140, Ø75/150, Ø80/143,
Ø80/156, Ø92/188.
Quenched hardness: HB240 ° ~ 280 °
Nitride hardness: HV850 ° ~ 1000 °
Nitriding depth: 0.45 ~ 0.7mm
Nitriding brittleness: ≤ two
Surface roughness: Ra0.4
Screw Straightness: 0.015mm
After the nitride hard chromium plated Degree: HV ≥ 900HV
Chrome plating thickness: 0.05 ~ 0.10mm
Alloy Depth: 0.8 ~ 2.0mm
Double Alloy hardness: HRC56 ° ~ 65 ° (alloy using nickel-based alloys)

High quality alloy steel
① 38CrMoALA (JIS SACM645)
② 42CMo (JIS SCM440)
③ 9Cr18MoV
④ CW6Mo5Cr4V2

Heat treatment:
Hard chrome plating layer
High-frequency quenching
Spray corrosion resistance, wear double metal layer
Vacuum hardening

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