1) The installation is not carried out in strict accordance with the operating procedures;
2) The inspection is not in place and the maintenance is not timely;
3) When replacing the roller skin, the surface treatment is not in place, the tightening torque is uneven or not in place;

4) There is a problem with the quality of the roll skin (such as: the cooperation with the roll body, the dimensional accuracy of the machined surface, etc.);
5) Failure to strictly follow the startup tightening requirements, etc.
6) The operating temperature of the equipment is high and unstable;
7) The material of the equipment is unknown and the coefficient of linear expansion cannot be obtained or calculated.
It was found that the two grinding rollers had wear problems, the wear depth of the 2# grinding roller was 2-8mm, and the wear depth of the 3# grinding roller was 1-5mm. If no repair measures are taken, the production of the enterprise will be seriously affected. In order not to delay the construction period, Soleil carbon nanopolymer material technology was selected for rapid processing. The material has excellent adhesion, compression resistance and high temperature resistance, and has been very mature in the application of vertical grinding roller wear repair, and has achieved good results.