There are many varieties of refractory materials on the market, but the quality is similar, and the price is concave and convex. How can we find refractory materials in such a market, the primary reason is that we do not understand how to identify good quality refractory materials.

How to distinguish fire resistant materials has always been a problem in this profession. In recent years, although the inspection methods and skills of refractory materials and products have been continuously improved and improved, because the test conditions of the laboratory are not completely consistent with the practical conditions of use, the test results under the specific conditions of the laboratory can not predict the operation function of the practical application of refractory materials and infer its service life. However, the current test method can still be used as a useful means to determine the quality of fire resistance data. After testing, it can check the quality of the factory and check whether the incoming data meet the requirements of the standard, determine the quality of the material, control the production process, study the nature of the product after use, and seek the path of progress and quality improvement.

During the use of refractory materials, they are subjected to physical, chemical, mechanical and other effects at high temperatures, simple melting and softening, or are corroded by melting, or collapse damage, etc., so that the operation is suspended and the material is tarnished. Therefore, the demand refractories must have the nature of being able to adapt to various operating conditions. The quality of refractory materials depends on its nature, it is the specification for evaluating the quality of the system, in the production is to formulate and improve the production process, and to see whether the production process is correct and stable. The correct and reasonable selection of refractory materials is also based on their properties.