Segment screw and barrel

Segment screw and barrel

Screw elements for counter-rotating parallel twin screw extruder
Specification:
Parallel twin screw diameter: Φ 18-Φ 177mm

The building block screw consists of core spindle and several hollow screw segments which can be replaced easily for different materials. The mixing components adopts building block type, which can be mounted and replaced conveniently. Such design makes it possible to process several kinds of materials with one screw.

Base Materials:

1)W6Mo5Cr4V2

2)38CrMoAlA(JIS SACM 645)

3)42CrMo(AISI 4140)

4)S45C

Bimetallic Alloy Materials:

1)Fe-based alloy

2)Ni-based alloy

3)Co-based alloy

4)NiCo-based alloy

5)Wolfram carbide

Bimetallic alloy level:

Alloy powder including 40% Wolfram Carbon

Alloy powder including 25% Wolfram Carbon

Alloy powder including 9.5% Wolfram Carbon

Processing Technology:

Heat treatment

High-frequency quenching

Nitriding treatment

Hard-chrome electroplating

Bimetallic alloy welding

Technical Parameter:

Nitrided layer depth:0.50-0.80mm

Nitrided hardness: 950-1100HV

Nitrided brittleness: Less than 2 level

Surface roughness: Ra 0.4μm

Linearity of screw: 0.015mm/m

Hard-chrome plating hardness after nitriding: ≥950HV

Chrome-plating layer depth: 0.025~0.10mm

Bimetallic layer depth: 3-5 mm

We can manufacture all types of screws and barrels according to clients’ requirement.

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