Grinding Roll is the core component of the vertical mill, and the grinding roller bearing is the heart of the grinding roller. The normal operation of the grinding roller bearing is the key to the reliable operation of the vertical mill.
However, the bearing of the vertical grinding roller is often worn out, which will inevitably affect the operation of the entire equipment.
Common vertical grinding roller bearing wear faults are mainly due to the following reasons:
1. Poor bearing quality
After grinding, the bearing with poor quality has obviously large vibration, and the feeding amount is low, which can easily lead to bearing damage. In order to reduce the interruption of the entire vertical grinding system after bearing damage, it is necessary to use good quality bearings to reduce the process. Cumbersome, affecting the process of work.
2. The amount of lubricating oil for the grinding roller is insufficient
Insufficient amount of lubricating oil will cause serious friction between the grinding roller and the bearing, and generate a lot of heat, which cannot be dissipated in time. The poor lubrication effect will affect the operation of the machine and reduce its service life.
3. The type of lubricating oil is poor
Lubricants must be of good quality and cost-effective in order to achieve certain benefits.
The type of lubricating oil is poor and the lubricating effect is not good, so that a good oil film cannot be formed between the bearing and the slideway, and the quality of the oil is poor. The bearing temperature is high, the service life of the bearing is seriously shortened, the waste of materials is caused, the progress of the whole project is seriously affected, and the profit of the enterprise is reduced.
4. Uneven distribution of grinding materials
Daily observation and recording of the grinding materials, it can be found that when there are many layers of materials, the work of the grinding roller will increase, the corresponding wear will be more serious, and the accumulation of materials will also be caused.
After the material enters the grinding, it is easy to deviate from the center of the grinding disc, which causes the long-term high-load operation of the grinding roller bearing and damages the bearing.
In view of the wear of the bearing position of the vertical grinding roller, the traditional method is to use welding, spraying, brush plating and other cladding techniques. However, in the face of some sudden emergencies, large equipment, complicated disassembly and other equipment problems, these processes are obviously the most important. There is more than enough.
With the development of science and technology, a new process method has appeared using Soleil carbon nanopolymer material for smearing and repairing. The material is a high-performance two-component polymer material reinforced by carbon nanomaterials.
Its biggest advantage is that the comprehensive performance of the material is greatly improved by adding special nanomaterials, and it can be well bonded to various metals, concrete, glass, plastic, rubber and other materials.
It has good temperature resistance and chemical resistance. At the same time, it has good machinability and wear resistance, and can be used for wear and reconstruction of various metals.