- Time:Apr 28, 2023
Refractoriness refers to the ability of a material to maintain its structural integrity and chemical stability at elevated temperatures. The load softening temperature is the temperature at which a material begins to deform and flow under a given load. The sintering temperature refers to the lowest temperature at which a chemical reaction occurs between material particles to form a solid material during the process of pressurizing the powder material at a certain temperature. These three concepts are all related to the properties and behavior of materials in high temperature environment, but with different emphases.
1. Refractoriness
Refractoriness refers to the ability of a material to maintain its physical and chemical stability in high temperature environments. It is usually expressed in terms of the material's melting point, or melting temperature, which is the lowest temperature at which the material begins to soften or melt. In practical applications, refractoriness can also be expressed as the degree of weight loss of materials after being eroded by high temperature within a certain period of time. High-refractoriness materials are mainly used in high-temperature industrial fields, such as furnace walls, heat insulation layers, castables, etc.
2. Load Softening Temperature
The load softening temperature is the temperature at which a material begins to deform and flow under a given load. It is an important parameter to describe the material's ability to resist deformation and plastic deformation. This parameter is usually determined by a thermal expansion test or a thermal bending test. The higher the load softening temperature, the better the material’s resistance to deformation at high temperatures, and it is suitable for applications that bear high temperature loads, such as kiln tuyeres, sintered furnace linings, etc.
3. Sintering Temperature
The sintering temperature refers to the lowest temperature at which a chemical reaction occurs between material particles to form a solid material during the process of pressurizing the powder material at a certain temperature. The sintered material has high density and strength, making it suitable for various applications in high temperature environments. The sintering temperature depends on the composition and particle size of the original material, as well as the pressure and heating conditions. The lower the sintering temperature, the better the sintering performance of the material, which can improve the manufacturing efficiency and reduce the manufacturing cost.
