screw and barrel for extruder

Size:screw diameter ø20-ø500mm

Maximum screw length :10000mm

Barrel inner bore diameter :ø500mm

Material 38CrMoAlA

40CrMo

42CrMo

High quality alloy steel

Technology :nitriding treatment

          Alloy coating sparying

          Heating treatment

          Screw fully hardening

Specification:Depth of nitrition layer 0.5-0.8mm

           Nitriding treatment,surface hardness:HV≥900-1000

           Fragility of nitrition :less than grade 1

           Surface roughtness :Ra 0.4um

           Surface of hardness of nitrated Cr coating layer ≥950HV

           Thickness of Cr coating layer :0.03-0.08mm

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

We can manufacture various kinds of screw barrels according to the customers requirement