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degassing screw and barrel for pelletizer or recycling machine

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degass or gas vented screw and barrel for pelletizer and recycling machine

Size: screw diameter:Φ20-Φ500mm

          Maximum screw length:10000mm

         Barrel inner bore diameter:Φ500mm

Material:    38CrMoAlA   

                  high quality alloy steel

Technology:  nitriding treatment,

                   alloy coating spraying,

                   heating treatment,

                   screw fully hardening,

Depth of nitrition layer: 0.5-0.8mm

Nitriding treatment, surface hardness: HV≥900-1000

Fragility of nitrition: less than grade 1

Surface roughness: Ra 0.4um

Streightness of screw: 0.015mm

Surface of hardness of nitrated Cr coating layer: ≥950HV

Hardness of Cr coating layer: HRC55-62

Thickness of alloy plating: 0.03-0.08mm

Depth of alloy layer:2mm

Used for granulation,PP, PE, PA, PC, ABS,AS etc

We can manufacture various kinds of screw barrels according to the customers requirement


degassing screw and barrel for pelletizer or recycling machine
 
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