Shanghai Alpha Machinery Co., Ltd.

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Segment element for twin extruder

What is the PM-HIP technologic way?
PM-HIP, that is in order to process high-alloy in powder metallurgy (PM) techniques way into high-density composite materials by hot isostatic pressing (HIP), as below:

Image of Screw Element - PM-HIP Technologic Way

Image of Screw Element - PM-HIP FumaceTill now there are only a few companies in world could use this advanced PM-HIP techniques in plastic machine parts process field, specially to make HIP bushs inside segment barrels ID of Twin screw extruders.

PM-HIP Fumace in company ⇒
Selection of Alpha's PM-HIP aloys
Alloy Base Hardness Wear
resistance
Corrosion
resistance
Thermal
expansion
Alloy Elements
(Weight- %)
Alpha 101A Fe 58 ~ 64 12.1 Cr:20 V:8 C:2.5
Alpha 201A Co 52 ~ 54 11.9 Cr:28 W:15 C:2.5
Alpha 301A Co 58 ~ 60 10.5 Cr:35 W:20 Mo:2.5

Segment screw, kneading disk that is nitrided, or high-speed steel quenched

Image of Screw Element Image of Screw Element

Bush form inside Segment barrel ID

Image of Screw Element - Bush form inside Segment barrel ID

HPL gearbox
Image of Screw Element - HPL gearbox HPL gearbox for co-rotating twin screw extruder could bear high torque and high screw speed, it is the most advanced drive way all over the world for twin extruder. The radial force on output axes is zero so that its carrying capacity and service life could be raised up maximum. The bearings inside gearbox is adopted SKF from Sweden and INA from Germany, our gearbox could be used in high dependability, long service life, high screw speed and high torque way.


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