Development Of Core Frame For Burning For Deflection Magnetic Core

With excellent performance, mullite-corundum materials has been widely used in the kiln furniture at home and abrod. So far the high grade mullite-corundum core frame for burning materials for deflection magnetic core have not been developed because the research on this subject state late in China. Based on analyzing every kiln furniture materials, mullite and corundum are selected as the main material of the core frame for burning. Then, the sintering temperature can be lowered with adding three types of additives. Through studying their influence on the performance and composition of the product, the best dose of additive is ascertained. After that, through changing the relative content of mullite and corundum, mullite and corundum is interlocking with each other so that the structure is optimized and the product's performance is developed. At last, through adding corundum powder and alumina super-powder, and prolong the heat preservation time, the thermal expansion coefficient can be lowered, the thermal shock resistance is excellent, and the temperature mechanical performance is high. In industrial experiment, the product in which mullite is main composition has better performance, lower cost, and longer working life. The working life of eighty times reach advanced level at home.