The raw material of screw and barrel is 38CrMoAlA, nitriding treatment, with nitride layer thickness 0.5~0.8mm, hardness over 950HV.
According to different processed raw material, we recommend use different coating screw and barrel for much long lifetime.
PA66+Fiber glass Bi-metal screw and barrel
PC + imflaming Special designed screw and barrel
PC + transparency Chromated screw and barrel
POM Special designed screw and barrel
PA +GF 30% + Corundum Full hardened screw and bimetal barrel
For color plates or plastic bend & extension test Optimize screw L/D ratio for good plasticizing capacity, mix screw.
