Bimetallic screw & barrel for plastic machine
The conical twin screw and barrel for extruder that can strengthen the performance of the plastic products.We are a professional manufacturer of screw and barrel which has been in the line for many years,we can make all kinds of screw and barrel according to your requirments.
The conical twin screw and barrel for extruder in specifications of Dia.35-92MM
Abrasion resistant and corrosion resistant.
1.Material:High quality alloy steel
1)38CrMoAlA
2)9Cr18MoV
2.Technics:1)Heat-treatment
2)Nitriding treatment
3)Spray bimetallic-alloy coating
3.Technical parameter
4.Nitriding depth:0.50-0.80mm
5.Nitriding hardness:900-1000HV
6.Nitriding brittleness:Less than grade 1
7.Surface roughness:Ra0.4
8.Linearity of the screw:0.015mm
9.Hardness of the chrome plating after nitriding:More than 950HV
10.Chrome plating thickness:0.025-0.085mm