High temperature resistance wear resistance high hardness silicon carbide grinding drum can be customized

(1) High temperature resistance, small coefficient of thermal expansion
Silicon carbide is made at high temperatures. In some high temperature environment, the material is required to have a certain processing strength, and meet the processing accuracy, and silicon carbide ceramics can achieve these two points. The highest use temperature of silicon carbide is about 800℃, and the bearing temperature of steel is only 250℃. By rough calculation, the average thermal expansion coefficient of SIC is 4.4×10-6/ C in the range of 25~1400℃. The thermal expansion coefficient of SIC is much smaller than that of other abrasives and high temperature materials. For example, the coefficient of thermal expansion of corundum can be as high as (7~8)× 10-6/℃.

(2) High thermal conductivity
The high thermal conductivity of SIC is another important characteristic of its physical properties. The thermal conductivity of silicon carbide is much higher than that of other refractory materials and abrasives, about 4 times that of corundum. Silicon carbide thermal expansion coefficient is low, high thermal conductivity, making its products in the process of heating and cooling under less thermal stress, which is also silicon carbide products thermal shock resistance is particularly good reason.

(3) Corrosion resistance
Silicon carbide because of its melting point (decomposition temperature), chemical inertia and thermal shock resistance is high, can be used for a variety of silicon carbide ceramic products, such as ceramic products furnace grinding tools, ceiling plate and sagger, zinc smelting industrial vertical cylinder distillation furnace with silicon carbide brick, aluminum electrolytic cell lining, crucible, small furnace material.