Injection Extruder Conical Twin Bimetallic Screw and Barrel

Product Details

The screw consists of threads and cylinders. The screw has long holes along the center line and can pass through cooling water. The tail of the screw is installed in the thrust bearing to avoid the screw being pushed out by reaction force when pushing the rubber. The screw must be heat-resistant, wear-resistant, and wear-resistant. Therefore, when the screw is processed, heat treatment is performed, and the surface is plated with chromium or nitrided. 


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1) Advanced Nitriding Technology. 

2) Bimetallic screw barrel has longer service life than the general nitrided screw

3) Wear resistance, corrosion resistance, high temperature resistance, high pressure resistance

4) Applications: : nylon plus glass fiber, PC plus glass fiber, PMMA, magnetic powder, ceramic powder, aluminum magnesium powder, iron powder, copper powder, bakelite injection molding, high temperature high speed injection molding, etc.


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Specification:

screw diameter

ø20-ø500mm

Maximum screw length

10000mm

Barrel inner bore diameter

ø500mm



Material

A.38crmoala in high quality
B.alloy steel in high quality

Technology

A.nitriding treatment
B.alloy coating spraying
C.heating treatment
D.screw fully hardening
E.vacuum quenching
F.electroplate hard chrome

Technical parameter

A:depth of nitrition layer: 0.6-0.8mm
B:nitriding treatment for 7 day and night, surface hardness HV>900
C:fragility of nitriding: less than grade 1
D:surface roughness: ra0.4um
E:streightness of screw: 0.015mm
F:depth of bimetallic layer>2mm
G:hardness of alloy platig: HRC 62-72
H:surface of hardness of chrome coating layer: HRC 62-72
I:thickness of chrome coating layer: 0.03-0.06mm



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Packaging:

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Company Information


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