What materials are commonly used to manufacture conical screw barrels?- Zhoushan Jiading Plastic Machinery Co., Ltd.

Conical screw barrels, also known as extruder barrels or extrusion screws, are commonly used in plastic and rubber processing machinery. These barrels are typically made from high-quality materials to ensure durability and resistance to wear and corrosion. The specific materials used may vary depending on the application and requirements.

1.Nitrided Steel: Nitrided steels, such as 41CrAlMo7, are often used for the construction of screw barrels. These steels are heat-treated and surface-nitrided to improve wear resistance, hardness, and corrosion resistance.

2.Bimetallic Lining: In some cases, the barrel may have a bimetallic lining. This involves applying a layer of wear-resistant material, such as an alloy containing tungsten carbide or Stellite, to the inner surface of the barrel. The outer layer is typically made of a more cost-effective material, such as carbon steel.

3.Tool Steel: Tool steels, such as H13 or D2, are used for applications involving high temperatures and demanding processing conditions. These steels offer excellent toughness, wear resistance, and thermal conductivity.

4.High-Speed Steel (HSS): High-speed steels, like M2 or M42, are known for their exceptional hardness, heat resistance, and wear resistance. They are suitable for processing abrasive materials or applications requiring high temperatures.

5.Powder Metallurgy: Powder metallurgy techniques can be used to manufacture screw barrels. Various materials, including stainless steel, tool steel, or high-speed steel, can be processed using powder metallurgy to achieve desirable properties such as improved wear resistance and corrosion resistance.

6.Tungsten Carbide: Tungsten carbide is an extremely hard and wear-resistant material. It is often used as a coating or as inserts in critical wear areas of the screw barrel to enhance durability.

The selection of materials for conical screw barrels depends on factors such as the specific application, the types of materials being processed, the required processing conditions (temperature, pressure, etc.), and the desired service life. Manufacturers may use different combinations or variations of the above materials to achieve the desired performance characteristics.

Extruder conical twin screw barrel

Specification:

45/90, 45/100, 50/105, 51/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 65/138, 70/135, 70/140, 75/150, 80/143, 80/156, 92/188, 105/216, 110/220