Waste plastic extrusion machine plays a vital role in the process of waste plastic recycling. However, the screw is one of the core components of the plastic recycling extruder machine, its wear resistance directly affects the operating efficiency and life of the machine. So, is the screw of plastic pellet machine extruder easy to wear? And how to improve the wear resistance of the screw?

Why the screw of waste plastic extrusion machine is worn?

• High temperature and high-pressure environment: The internal working environment of the waste plastic extrusion machine is high temperature, and the plastic material is easy to damage the screw surface under high temperatures.
• Characteristics of plastic granules: Different kinds of plastics have different hardness and abrasion resistance, and certain plastic granules may cause greater wear to the screw surface.
• Working intensity and frequency: Continuous high-frequency work may lead to screw fatigue and wear, especially for large or high-capacity plastic recycling extruder machines.

How to improve the wear resistance of plastic pelletizer screw?

Choose high-wear-resistant materials

Adopt high wear-resistant and high-strength alloy steel material to manufacture screws, such as using alloy steel with high surface hardness or coating treatment to improve the anti-wear performance of waste plastic extrusion machine screws.

Surface treatment technology

Using surface spraying, carburizing and other technologies to form a higher hardness surface protection layer to improve the wear resistance and service life of the waste plastic extrusion machine screw surface.

Regular maintenance

Regularly check and clean the waste plastic extrusion machine screw surface to avoid factors such as residue or metal powder to accelerate wear. Reasonable lubrication and maintenance can also extend the service life of the plastic pellet machine extruder screw. Timely replacement of worn screw can avoid further damage to other parts, to protect the stable operation of the plastic granulator.

Control the processing parameters

Reasonable control of processing parameters also has an important impact on the wear resistance of the plastic recycling extruder machine screw. For example, controlling the working temperature, rotational speed, pressure and other parameters of the pelletizing machine, and reasonably adjusting the operating parameters can reduce the stress on the waste plastic recycling pelletizing machine screw, reduce the degree of wear and tear, and improve the wear resistance.

Screw design optimization

Optimization of screw design is also an important means to improve wear resistance. Improve the structure and geometry of the waste plastic extrusion machine screw to make it more uniformly subjected to force and wear, reduce the degree of localized wear, and improve the overall wear resistance.