The extruder screw is an important part of the extruder and is generally made of high-strength steel or alloy steel. The function of the extruder is to melt the plastic and extrude it into shape. In this process, the role of the screw is very critical. The rotation of the screw sends the plastic particles into the heating zone. In the heating zone, the plastic melts to form a continuous molten fluid, which is then ejected by the extruder head. Therefore, the quality and performance of the extruder screw are crucial to the production effect and product quality of the extruder.
According to different plastic materials and production process requirements, extruder screws can be divided into various types such as single screw, twin screw and mixed screw. Among them, single-screw extruder is the most common type and is suitable for most plastic extrusion production. Twin-screw extruders are suitable for producing plastic products that require high precision and quality, such as medical devices, high-end pipes, etc. The mixing screw is improved on the basis of single screw and twin screw. It can adapt to the requirements of a variety of materials and production processes and is widely used in various fields.
During the production and use of the extruder screw, attention should be paid to the maintenance and care of the screw. Due to long-term heating, corrosion and wear, the surface of the screw is prone to adhere to some impurities and corrosive substances. If not cleaned in time, these impurities and corrosion will affect the production efficiency and product quality of the extruder. Therefore, maintenance work such as cleaning, trimming and lubrication of the screw must be carried out regularly during use to ensure good operation and long-lasting use of the extruder screw.