With the continuous development of society, people's demand for ceramic products is getting higher and higher, and precision processing has emerged. To perform precision machining, in addition to the use of high-precision processing machinery, ceramic molds also need to be high-precision, and then introduced a series of precision ceramic molds.
Compared to ordinary ceramic molds, precision ceramic molds have significant wear resistance. When the blanks plastically degenerate in the mold cavity, they move and slide along the outside of the cavity, causing intense friction between the outside of the cavity and the blank. , resulting in the mold due to wear and take effect. Therefore, the wear resistance of the mold is one of its most fundamental and most important functions.
Hardness is an important factor influencing wear resistance. Under normal circumstances, the higher the hardness of a precision ceramic mold, the smaller the amount of wear and the better the wear resistance. In addition, the hardness of precision ceramic molds will also depend on the type, number, state, size, and dispersion of carbides in the material.
Ceramic molds are often used in poor conditions, and are often subject to greater conformity, resulting in brittle fractures. In order to avoid sudden breakage of the ceramic mold during use, the precision ceramic mold must have high strength and toughness, which depends on the carbon content, grain size, and structural condition of the material.
During the use of the mold, due to the effect of residual stress will also cause its fatigue fracture, so the improved precision ceramic mold should have good fatigue fracture function, it is mainly depends on its strength, toughness, hardness, and inclusions in the material The content.
In addition, low-temperature performance is also one of the features of precision ceramic molds. Precision ceramic molds should have high resistance to tempering, ensuring that the molds can also have higher hardness and strength at higher temperatures. Helps extend its useful life.