twin parallel screw and barrel 1.38CrMoALA(JIS SACM645) 2.42CrMo(JIS SCM440) 3.9Cr18MoV 4.CW6Mo5Cr4V2

twin parallel screw and barrel

Size:

screw diameter:Φ20-Φ500mm

Maximum screw length:10000mm

Barrel inner bore diameter:Φ500mm

Material:   

38CrMoAlA   

high quality alloy steel

Technology:

nitriding treatment,

alloy coating spraying,

heating treatment,

screw fully hardening,

Depth of nitrition layer: 0.5-0.8mm

Nitriding treatment, surface hardness: HV≥900-1100

Fragility of nitrition: less than grade 1

Surface roughness: Ra 0.4um

Streightness of screw: 0.015m

Used for granulation,PP, PE, PA, PC, ABS,AS etc

We can manufacture various kinds of screw barrels according to the customer’s requirement

twin parallel screw and barrel 38crmoala for film blowing machine