We are a professional manufacturer of screw&barrel which has been in the line for 8 years,we can make all kinds of screw&barrel according to your requirments.
The conical twin-screw&barrel for extruder in all specifications
Abrasion resistant and corrosion resistant.
Material:High quality alloy steel
1)38CrMoAlA
2)9Cr18MoV
Technics:1)Heat-treatment
2)Nitriding treatment
3)Spray bimetallic-alloy coating
Technical parameter
Nitriding depth:0.50-0.80mm
Nitriding hardness:900-1000HV
Nitriding brittleness:Less than grade 1
Surface roughness:Ra0.4
Linearity of the screw:0.015mm
Hardness of the chrome plating after nitriding:More than 950HV
Chrome plating thickness:0.025-0.085mm