High Yield Extruder Screw Cylinder

High Yield Extruder Screw Cylinder
Product Details

High Yield Extruder Screw Cylinder


The extruder screw cylinder is all processed by 38 CrMoAlA alloy steel and subjected to nitriding, surface chromium-plating, tempering, high frequency quenching and fine grinding treatment. Extruder screw is the most important part in the plastic machine equipment. It is directly related to plasticizing effect and output of the plastic machine.


Advantage

1) Advanced Nitriding Technology  

2) Good Wear resistance and corrosion resistance

3) we uses special alloy powders being sprayed and welded on the screw's ridge,and uses different alloy and welding methods for the screw of different functions.


Specifications

Product

High Yield Extruder Screw Cylinder

Material

38 CrMoAlA(JIS SACM645); 42CrMo(JIS SCM440)

Hardness of nitrogen treatment

HV900°~1100°

Tempering hardeness

HV240°~280°

Depth of nitrogen layer:

0.6~0.8mm

Nitrided Brittleness

above 1 stage

Surface Roughness

Ra0.4 um

Screw straightness

0.015mm

Hardess of surface chromium-plating after Nitriding

HV≥950HV

Chromium plating Depth

0.025-0.085mm

Alloy Depth

2.5mm-4mm

Alloy hardness

HRC62°~72°

Heating-treatment

nitrogen ,electroplated hard -chrome finish,high frequency quenching


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