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TEM Machine 38crmoai 25mm Extruder Screw Element
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TEM Machine 38crmoai 25mm Extruder Screw Element

Application:Extruder
Min Order:1 piece
Place of Origin:Jiangsu,China
Customization:Customized logo
Package:wooden case
Availability:
Quantity:
  • zhitian

twin screw extruder parts


TEM Machine 38crmoai 25mm Extruder Screw Element


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PROCESSING RANGE ¢15.6-¢350MM

Co-rotating twin screw elements for

- APV -KOBE -OMC
- Buhler -KraussMaffei -Theysohn
- Buss -Berstorff- -Toshiba
- Clextral -Labtech -USEON
- Coperon -Lantai - others
- JSW -Leistritz
- Keya -Maris

Types of the Screw Segments

* Convey Screw Segment
* Mixing Screw Segment
* Kneading Block & Disk
* Transition Screw Element
* Deep groove transfer element
* Screw element for side feeder
* 1-flighted,2-flighted,3-flighted screw elements


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BASIC KNOWLEDGE OF TWIN SCREW THREAD ELEMENT COMBINATION

The combination of twin screw thread elements in a co-rotating parallel twin-screw extruder can vary based on the desired functionality and material processing requirements. Here are some basic knowledge points about twin screw thread element combinations:

  • CONVEYING ELEMENTS: These elements are responsible for material transport and can have various groove shapes and configurations. They can be forward conveying or reverse conveying, and their thread configurations can be single-end, double-end, or triple-end.

  • SINGLE-START THREADED ELEMENTS: Single-start screw elements excel in solid conveying and are commonly used in the feeding section. They are suitable for materials with poor fluidity, offering higher output capacity, torque, and mixing characteristics compared to multi-start threads.

  • DOUBLE-START THREAD VS. TRIPLE-START THREAD: Double-start threads have a larger lead and deeper grooves, resulting in lower shear rates. They are ideal for processing powder materials, especially those sensitive to shear. Double-start threads allow for higher screw speeds, boosting production capacity. On the other hand, triple-start screw elements generate higher shear rates and shear forces due to shallower grooves, which enhances thermal conductivity and plasticization. However, they may not be suitable for shear-sensitive materials.

  • LEAD VARIATION AND FEATURES: The lead variation of a threaded element influences its characteristics. In a production-oriented scenario, using a thread with a larger lead can increase production rates. For heat-sensitive polymers, a larger lead reduces material residence time, minimizing thermal degradation.

These principles provide a solid foundation for understanding twin screw thread element combinations. However, it's important to note that the specific choice of screw elements will depend on the extrusion process requirements, material properties, and desired outcomes.

twin screw extruder element

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