1. Hardness: High-quality screw materials usually have higher hardness, which can be detected by hardness testing and other means. The higher the hardness, the better the wear resistance.
2. Corrosion resistance: Observe its performance when it comes into contact with corrosive substances. The material that is not easily corroded is better.
3. Toughness: Good toughness can avoid easy breakage or cracks during operation. Certain impact tests can be performed to evaluate.
4. Thermal stability: It can maintain stable performance under high temperature working environment without obvious deformation or performance degradation.
5. Wear degree: Check the surface wear of the screw after a period of use. The material with less wear is relatively good.
6. Chemical composition: Understand its specific chemical composition. Those that meet high standards are generally more reliable.
7. Manufacturing process: Excellent manufacturing process can also reflect the quality of the material to a certain extent, such as surface finish.
Yongte is professional manufacturer for high quality WPC production machines, we use wearing bimetallic screw and SKD coated barrel for WPC extruder machine, the using time can be two times compared with the normal screw barrel.
