Bimetallic Screw and Barrel

Bimetallic Screw and Barrel

Specification:

Screw diameter:15mm-300mm

Maximal length:8000mm

Barrel inner diameter:15-300mm

Maximal length:4000mm

Different bimetallic alloys are available for different raw materials.

Technical Information :                                           

Material:38CrMoAlA(JIS SACM645)- base material

       Ni based alloy powder + 10% tungsten carbide -bimetallic material

Technics:1)Heat treatment

       2)Nitriding treatment

       3)Bimetallic build up welding-screw

       4)Bimetallic centrifugal casting-barrel

Technical parameter:

Nitrided layer depth:0.5-0.8mm

Bimetallic layer depth: 3mm

Hardness: 58- 62HRC

Surface roughness: Ra0.4

Linearity of screw:0.015mm