Technical Specification

Tempering hardness: 240~280HV

Nitrided Hardness: 900-1020HV

Depth of nitriding: 0.5mm-0.8mm

Nitriding brittleness:≦2 grade

Surface roughness:Ra 0.4um

Straightness of the screw/barrel:0.015mm

Screw type:

Aiming at different plastic property,the screw can be chosen from:

Ordinary,gradual,mutant,pinned,separating and exhausting types.

The compression ratio of screw can be designed according to different raw materials and requirements of clients.