The effect of the roll forming method on the preparation of zirconia ceramic ball blanks and the effect of sintering temperature on the volume density, crushing strength and self-wear performance of the ceramic grinding balls. The results show that the submicron level 3mol% produced by the gel solid phase synthesis method Y_2O_3-ZrO_2 ceramic powder is suitable for the preparation of spherical blanks with high volume density, good roundness and uniform size by rolling method.
The microcrystalline ceramic grinding balls obtained under the sintering condition of holding at 1500 ℃ for 2 h are in a fast grinding machine The self-wear rate is the lowest, the microstructure is uniform, the grain size is about 0.5 μm, the bulk density is 5.97 g/cm~3, and the average crush strength of φ2.75 mm and φ6.36 mm ceramic grinding balls reaches 326 and 1377, respectively. kg.
