Sintering System and Molding Requirements for Grinding Ball Production Line

- Apr 04, 2018-

Grinding ball production line can effectively add the sintering aid during the production process. During the operation process, the appropriate sintering aid can reduce the sintering temperature, which can effectively improve the microstructure of the ceramic and effectively improve it. Its mechanical properties, and then improve the wear resistance of porcelain balls.

The quality of the sintering aid used in the grinding ball production line is effectively including its quantity, chemical composition, fineness, and phase composition. The sintering aid generally uses its SiO2-CaO-MgO ternary system for formulation. Should avoid the use of high-temperature gas evolution and phase change of sintering aids, so as to avoid new defects, and affect the product densification and pass rate, reduce product competitiveness.

Grinding ball production line molding, the equipment in the process of production is mainly used isostatic pressing technology, its equipment to a certain extent to overcome other molding methods hollow, layered, low density and density of non-uniform defects. The particle size, shape, and additives of the raw materials all affect isostatic pressing.

The molding pressure and holding time of the grinding ball production line influence the density, sintering shrinkage, and sintering temperature of the green body. Therefore, in the process of operation, appropriate raw materials and scientific molding processes are used to ensure that the green body has good sintering characteristics to some extent.

The sintering system of the grinding ball production line, high sintering temperature and long holding time will promote the growth of Al2O3 crystals and increase the amount of liquid phase. This will not only reduce the strength but also reduce the wear resistance. Of course, the temperature is too low, the sintered density decreases, and the wear resistance of the ceramic ball decreases.