Alumina ceramic dry pressing molding method: This molding process is only used for workpieces with simple shapes, inner thickness exceeding 1mm, and diameter and length not exceeding 4:1. There are two methods: uniaxial and biaxial. Presses are divided into mechanical chamber presses and hydraulic presses. There are fully automatic and semi-automatic molding methods available. The maximum pressure of the press is 200 megapascals, and it can produce about 15-50 workpieces per minute. Due to the average pressure distribution of the hydraulic press stroke, the height of the pressed workpiece will also vary depending on the filling powder. On the contrary, mechanical pressure will generate corresponding pressure with the amount of powder filled. After sintering, the size is easily reduced, which affects the quality of the product. Therefore, the uneven distribution of powder during the dry pressing process is particularly important for filling and has a significant impact on the precise dimensional control of the manufactured alumina wear-resistant ceramic parts.