What are the main reasons for tire shredder tooth plate wear?

Tire recycling machine wear is indispensable. I have told you a lot about gear wear before. Today I will tell you why the gear is worn.

The wear of the tire recycling machine tooth plate is chiseled. Take P Z2 50 ~ 50 0 type tire shredder tooth plate as an example. The material of the tooth plate is a high-manganese steel with a water-toughness treatment. Looking at the grinding surface of the tooth plate under a scanning electron microscope, it can be seen that the outside of the tooth plate is squeezed to a high and low level, and then pushed by the abrasive material to form a tongue-pressing grinding surface. On the grinding surface, many abrasives formed by short-angle sliding of the abrasive material can be seen. Marks, and micro cracks can be seen outside the tooth plate. The main reasons for tooth plate wear are the short-term sliding of the abrasive with respect to the tooth plate, the formation of large-scale cutting debris and repeated pressing of the abrasive, which cause the tooth plate data to be deformed repeatedly, resulting in fatigue and low-scale large data.The effective process of wear is:

① The material repeatedly squeezes and chisels the tooth plate. At the surface of the tooth plate area, or when extruding large protrusions, micro-cracks are formed at the root. This micro-crack continues to extend to form large-scale materials outside, and constitute abrasive debris.

② The material was repeatedly squeezed to form a large material of the tire shredder. The large-scale material was partially fractured or turned up, and the broken or turned up department followed the material that was hit by the extrusion to fall all the way down to form abrasive debris.

③ The material slides relative to the tooth plate for a short distance, and the cutting tooth plate forms abrasive debris. In order to control the wear of the tooth plate from the wear-resistant data, it mainly depends on the hardness and toughness. The data is hard, the extrusion depth of the material is shallow, the deformation of the data is small, and the cutting amount of the material for short-range sliding of the material is also small. The data is good in toughness, and it is strong in resisting fractures. It can eliminate brittle fractures in the process of compression and impact, and improve fatigue resistance and fatigue cracking.

The specifications of the tire recycling machine are different, the feeding granularity and sharpness are different, and the extrusion and impact forces on the tooth plate are different. Consideration should be given to the impact and tortuous stress of the impact. The material selection of large toothed plate for tire shredder should be made of high toughness and comprehensive functions. From the above analysis of wear effectiveness, we can choose a material with high hardness to resist extrusion and micro-cutting to take effect on tooth plate data, and a material with sufficient toughness to resist fatigue from chiseling. At the same time, the improvement of the structure of the tooth plate is stopped to reduce the relative sliding of the material and the tooth plate. This is not only not beneficial to the improvement of productivity, but also to the application life of the progressive data.