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Help CenterScrew and Barrel for Extruders
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Specifications
Screw and barrel for extruders.We produce high quality parallel twin screw and barrel with ten-year experiences in screw and baScrew and barrel for extruders
We are a professional manufacturer of screw and barrel that has been in this line for 10 years,we can supply and design all kinds of screw&barrel according to your requirments.
1.Material:
1):38CrMoALA (JIS SACM645)
This kind of material is applicable to double alloy and common molding screw
2):9Gr18MoV
3):42CrMo
2.Technics:
1):Heat-treatment
2):Nitriding-treatment
3):Spray bimetallic-alloy coating
3.Technical parameter:
1):Depth of Nitration Layer:0.5-0.8mm
2):Hardness of Nitration:900-1000HV
3):Fragility of Nitration:Less than grade 1
4):Roughness of the surface:Ra0.4
5):Straightness of the screw:0.015mm
6):Surface hardness of Nitrated Cr coating Layer:>=950Hv
7):The thickness of Chrome-plating layer:0.025-0.085mm
8):Depth of alloy Layer:>2mm
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