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Structural Ceramics High Temperature Mechanical Properties

Hangzhou JWG Technology Co.Ltd | Updated: Oct 18, 2017

The application of ceramic materials, its development process is the progress of human civilization and civilization show. The development of ceramics generally through pottery → stoneware → porcelain → traditional ceramic or ordinary ceramic → advanced ceramics and other stages. For the title of advanced ceramics, in the literature is also the use of technical ceramics, modern technology ceramics, engineering ceramics title, Structural Ceramics this paper intends to use the title of engineering ceramics. Engineering ceramics are based on the required product performance, through strict composition ratio and production process control and the use of the corresponding equipment and manufacturing high-performance materials.

Compared with the metal material, Structural Ceramics the biggest advantage of ceramics is excellent high temperature mechanical properties, chemical resistance, high temperature oxidation, high strength wear resistance erosion, the proportion of small (about metal 1/3 ~ 2/3), thus In many occasions gradually replace the expensive ultra-high alloy steel or applied to the metal material simply can not do the occasion, Structural Ceramics such as in the raw materials industry, mining, metallurgy, chemical, nonferrous metals, petroleum, construction, building materials, cement and other industrial production process can not Or lack of equipment parts Protective materials and tools and media for making products. However, it should be noted that the biggest drawback of ceramic materials is brittleness, which has become a fatal weakness in the application of traditional ceramics. Even if the brittleness of the current engineering ceramics is greatly improved, its brittleness is still its work in high stress abrasive wear The environment is an unavoidable weakness.

As we all know, most ceramic materials and metal materials, Structural Ceramics compared to its poor plastic deformation, stress concentration and crack sensitive. Obviously, the use of ceramic as grinding cement grinding body, its reliability is worse than the metal material, even if the texture is more excellent structural ceramics, in use there will be abnormal circumstances, such as grinding body fragmentation, Structural Ceramics the greater impact on the work The environment does not meet and so on. So the ceramic ball is not suitable for relying on the impact force to do the work of crushing the cement mill mill positions, even in the two positions (for three warehouse grinding) or tail positions (for double-warehouse grinding), ceramic ball ball phenomenon also appears The record. Grinding cement appeared in the phenomenon of broken ball, reflecting two aspects: First, the quality of ceramic balls, Structural Ceramics the second is the grinding process and operation. Ceramic ball quality by its technical performance that is mechanical properties and physical and chemical properties to reflect. The technical performance of the ceramic abrasive body (ball) used for grinding cement is the following: the density, hardness, compressive strength, stiffness and fracture toughness are significant. We know that the hardness of the structural ceramics, Structural Ceramics pressure strength than the wear-resistant metal, and density, stiffness (elastic modulus), fracture toughness improvement is perfect, is to improve the quality of ceramic products and the use of the key.

Grinding ceramic ball is used for ball mill, vibration mill and other fine grinding equipment grinding body. Grinding ceramic ball with high hardness, bulk density, Structural Ceramics corrosion resistance and so on. Structural ceramic grinding body commonly used alumina, silicon carbide, silicon nitride and so on. Alumina ceramic grinding body, according to its different content of Al2O3, grinding ceramic ball microcrystal aluminum grinding ceramic ball, high alumina grinding ceramic balls.

Hangzhou JWG Technology Co.Ltd