2015年4月23日星期四

Effects of organizational structure on performance of refractory materials

Influence of refractory materials under various physical, chemical reactions at highfibertemperature in the process of using the occurrence of corrosion, wear, or split and cause damage. Therefore, refractory material must have the ability to adapt to various working conditions, and the performance and composition and structure is closely related to the.
Chemical composition is the basic characteristics of refractory materials; the main component is the basic feature ofrefractory material, so the composition and quantity directly determines the performance of refractory materials. Refractory products at the same time, mineral composition, product properties are the comprehensive reflection of minerals and micro structure, and therefore cannot only from the chemical composition analysis of the effect on the properties of products. The refractory material of mineral composition and depends on the chemical composition and process conditions. Although the same chemical composition. If the different processing conditions. The crystalline phase and the number of mineral species will also have the difference, the different properties of refractory materials. However, it must be stressed that refractory material macro organizationalcastable  refractorystructure is an important factor which influences the performance, and performance index and can reflect the internal structure ofrefractories. For example: – densification properties of porosity, density, true density body Zhi said gas permeation properties of the ease of permeability: properties thermal properties of linear expansion coefficient, thermal conductivity, heat capacity and thermal conductivity; representation properties mechanical properties and high temperature strength, high temperature often pits, bending strength high temperature tensional strength, high temperature creep and elastic modulus; as, refractoriness, refractoriness under load, high temperature and volume stability, thermal shock resistance and slag resistance of high temperature performance.
Therefore, the use of departments must be from the characteristics and process of thermal equipment requirements, carefully selected according to the chemical composition, mineral structure, refractory material and macro microstructure and performance indicators, in order to achieve the desired effect

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