polycrystalline mullite fiberIt is a kind of polycrystalline alumina fiber. The content of Al2O3 in the fibers is between 72% and 75%. Generally, Al2O3 content exceeds 80%, which is called polycrystalline alumina fiber.

Definition of concept:

polycrystalline mullite fiberThe main crystal phase is a single mullite phase. It is one of the polycrystalline alumina fibers with good thermal stability at high temperature, and the use temperature is above 1400 ℃.

Introduction:

Polycrystalline mullite fiber (PMF) is a new type of ultra-light high-temperature refractory fiber at home and abroad, and it is a kind of Al2O3-SiO2 ceramic fiber. The use temperature is 1500-1700 ℃, which is 200-400 ℃ higher than glass fiber.

Polycrystalline mullite fiber has been put on the market, providing a material basis for designers to design new equipment, develop new products and new processes. It provides an ideal means for industrial and mining enterprises with thermal equipment to transform old equipment, increase production and energy saving, and improve the environment.

Polycrystalline mullite fiber scope of application:

Polycrystalline mullite fiber products can be used as long-term insulation materials for high-temperature thermal equipment below 1600 ℃, such as silicon carbide electric furnaces, molybdenum silicide electric furnaces, various steel heating furnaces, mechanical forging furnaces, etc., Can significantly improve the thermal efficiency of equipment, greatly save energy, improve productivity and product quality.

It can be used for heat insulation of various high-temperature industrial kilns; ceramic kilns; and mechanical metallurgy heating furnaces; heat lining of heat treatment furnaces and other industrial furnaces; high-temperature fire barriers; insulation materials such as doors, kiln cars, expansion joints; glass Furnace insulation.

Inpolycrystalline mullite fiberIn the production process, it is necessary to accurately control the hot air temperature, material pressure, number of revolutions, drying, medium temperature treatment, high temperature heat treatment temperature and time and other process data. Otherwise, the fiber furnace lining will shrink, crush, crack, and fall off after use, causing fire channeling, which will not only damage the instruments and equipment of the industrial furnace, but also cause safety production problems of the industrial furnace and bring huge losses to heat treatment users.