What are the factors causing the wear of the screw? It is helpful to delay the wear trend and prolong the service life of the parts.

The three factors can cause the screw wear of the cylinder screw, analyze and understand the cause of the problem, help the staff to prevent effectively, and can be repaired quickly in the later stage, thus improving the work efficiency.

1. The screw is rotated inside the barrel, the material is friction with the screw and the cylinder, and the working surface of the screw and the cylinder gradually wears away, which is an objective factor. Friction can shave off the inner surface of the cylinder, which gradually increases the diameter of the inner hole of the cylinder, and the diameter of the screw gradually shrinks. The diameter gap between the screw and the cylinder is increased with the wear of the two. As the resistance of the head and shunt plate has not changed, the leakage flow of the extruded material will undoubtedly increase, thus causing the production of extruder to decrease. And the hydrogen chloride gas produced by the decomposition of the material in the cylinder can corrode the screw and the cylinder.

2. Long-term use of high hardness of calcium carbonate and glass fiber will accelerate the wear of the screw and cylinder, because the harder the material will increase the friction coefficient and accelerate the wear.

3. Abnormal accident damage, such as material not plasticized, or material mixed with metal foreign matter, causing the screw to break. This is a subjective factor, and it is possible to avoid such problems by doing the material inspection.

The three factors that cause the wear of the cylinder screw are subjective and objective, and the existence of cognitive problems can be effectively prevented. Of course, the quality of products produced by different manufacturers is different than that of the same type of extruder barrel screw. The products of the Chinese plastic machine are more advantageous than those of similar products.