Specifications:

Screw diameter: 15-300mm

Maximum length: 8000mm

Inner diameter of barrel: 15-300mm

Maximum length: 4000mm

Different alloy materials can be selected according to different raw materials

Base material:

1)38CrMoAlA(JIS SACM645)

Alloy material:

1) Nickel base alloy + tungsten carbide

Treatment process:

heat treatment

Nitriding treatment

Spraying bimetal alloy

Centrifugal casting of bimetal alloy

Technical parameters:

Nitriding depth: 0.50mm-0.80mm

Nitriding hardness: 58-62hrc

Surface roughness: RA 0.4

Straightness of screw: 0.015mm

Double alloy depth: 3mm