To enhance the wear resistance of alumina abrasives, pay attention to the following three points:
1. The particle size of Al2O3 raw material will directly affect the wear resistance of alumina grinder. When the particle size of Al2O3 raw material is smaller, its wear principle will have plastic deformation and partial transgranular fracture, and then slight wear will occur. When the particle size of Al2O3 raw material is larger, its transgranular fracture will be greatly improved, thus serious wear will occur. Therefore, from the above According to the analysis of two points, the smaller the grain size of Al2O3 raw material, the better the wear resistance of alumina grinder
2. The sintering aid can reduce the sintering temperature of alumina abrasives, improve the microstructure of ceramics and the mechanical properties of alumina abrasives, and then improve the wear resistance of alumina abrasives.
3. The forming process, roll forming and isostatic pressing forming technology change the disadvantages of other forming such as hollow and layered. The size and shape of the raw materials just mentioned will also affect roll forming and isostatic pressing forming. Therefore, appropriate raw materials and mature forming technology should be used to ensure good sintering characteristics and improve the wear resistance of alumina abrasives.