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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

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