Specifications:

Screw diameter: 15-300mm

Large length: 8000mm

Inner diameter of barrel: 15-300mm

Large 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

Centrifugally cast bimetallic alloy

Technical parameters:

Nitriding depth: 0.50mm-0.80mm

Nitriding hardness: 58-62HRC

Surface roughness: Ra 0.4

Screw straightness: 0.015mm

Double alloy depth: 3mm