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PVC Pipe and Profile Designed for Extruders Conical Twin Screw Barrel – Efficient Production, Wear Resistant, Factory Direct Sale Featured Image
  • PVC Pipe and Profile Designed for Extruders Conical Twin Screw Barrel – Efficient Production, Wear Resistant, Factory Direct Sale
  • PVC Pipe and Profile Designed for Extruders Conical Twin Screw Barrel – Efficient Production, Wear Resistant, Factory Direct Sale
  • PVC Pipe and Profile Designed for Extruders Conical Twin Screw Barrel – Efficient Production, Wear Resistant, Factory Direct Sale
  • PVC Pipe and Profile Designed for Extruders Conical Twin Screw Barrel – Efficient Production, Wear Resistant, Factory Direct Sale
  • PVC Pipe and Profile Designed for Extruders Conical Twin Screw Barrel – Efficient Production, Wear Resistant, Factory Direct Sale
  • PVC Pipe and Profile Designed for Extruders Conical Twin Screw Barrel – Efficient Production, Wear Resistant, Factory Direct Sale

PVC Pipe and Profile Designed for Extruders Conical Twin Screw Barrel – Efficient Production, Wear Resistant, Factory Direct Sale

Short Description:

Conical twin screw barrel is a key part of a plastic extrusion device, which, through the use of different types of screw structures, in combination with various molds and auxiliary machines, can produce a variety of products such as PVC pipe, profile, sheet, and board. The conical twin screw barrel features a cone-shaped design that can achieve good mixing and plastification effects, making it suitable for processing various types of plastic products.

The main characteristics of the conical twin screw barrel :

Efficient mixing capability: The conical twin screw employs a streamlined design where the materials can rub and cut against each other inside the barrel, leading to fast mixing and improving work efficiency as well as product quality.

Versatile production: By configuring different molds and auxiliary machines, various shapes and sizes of PVC, PP, PE, LDPE, HDPE, and other products can be manufactured.

Long service life: Due to its rational structure design, wear is minimal, and maintenance is convenient.


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    Construction

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    The conical twin screw barrel typically has a tapered or conical shape, with a larger diameter at the feed end and a smaller diameter at the discharge end. The conical design allows for increased processing capacity and improved material homogeneity.

    Screw Configuration: The twin screws in a conical twin screw barrel have a matching conical shape and rotate in opposite directions. The flight depth of the screws decreases gradually from the feed end to the discharge end, aiding in the melting and mixing process.

    Material and Coatings: Conical twin screw barrels are typically made of high-quality alloy steel, which provides excellent strength and durability. Surface treatments like nitriding or bimetallic cladding can be applied to enhance wear resistance and extend the barrel's lifespan.

    Screw Configuration: The conical twin screw barrel has two intermeshing screws that rotate in opposite directions. The screws typically have a deeper flight depth at the feeding section, gradually decreasing towards the discharge end. This configuration enhances the plasticizing efficiency and ensures good mixing of the molten plastic.

    Material and Coatings: The barrel is usually made of high-quality alloy steel to withstand the high temperatures and pressures involved in the plastic extrusion or injection molding processes. It may also feature a specialized coating or treatment, such as nitriding or bimetallic cladding, to enhance its wear resistance and prolong its lifespan.

    Heating and Cooling: The conical twin screw barrel is equipped with heating and cooling systems to precisely control the temperature during the plastic processing. Heating elements, such as electric heaters or heating/cooling jackets, are used to maintain the desired melt temperature, while water or oil circulation systems help regulate the barrel temperature.

    Applications: Conical twin screw barrels are commonly used in various plastic processing applications, including PVC pipe/profile extrusion, PVC window profile extruder.

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    Overall, conical twin screw barrels are designed to enhance the plastic processing capabilities of extruders by providing efficient plasticizing, melting, and mixing of materials.

    Models
    45/90 45/100 51/105 55/110 58/124 60/125 65/120 65/132
    68/143 75/150 80/143 80/156 80/172 92/188 105/210 110/220

    Technical Index

    1.Hardness after hardening and tempering: HB280-320.

    2.Nitrided Hardness: HV920-1000.

    3.Nitrided case depth: 0.50-0.80mm.

    4.Nitrided brittleness: less than grade 2.

    5.Surface roughness: Ra 0.4.

    6.Screw straightness: 0.015 mm.

    7.Surface chromium-plating's hardness after nitriding: ≥900HV.

    8.Chromium-plating depth: 0.025~0.10 mm.

    9.Alloy Hardness: HRC50-65.

    10.Alloy depth: 0.8~2.0 mm.

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