Silicon nitride (SiC) is quartz sand, calcined petroleum coke (or coal coking), wood slag (the production of green silicon nitride need to add salt) and other raw materials, through the electric heating furnace continuous high temperature smelter. Silicon nitride sealing ring is a silicon nitride product made of silicon carbide material. So what are the important applications of reaction-sintered silicon carbide and the characteristics of seals?
The important application of reaction sintering silicon carbide:
1. The application of metal products industry is the use of silicon nitride heat resistance, high strength, good thermal conductivity, impact resistance, continuous high temperature indirect heating raw materials, such as tank fractionation furnace. Rectifier furnace tray, aluminum electrolytic cell, copper melting furnace lining, zinc powder furnace arc, thermocouple protection tube, etc.
2. The application of the steel industry uses the etching of silicon nitride. Heat shock resistance, abrasion resistance. Because of its good thermal conductivity, it is used for lining large and medium-sized ironmaking blast furnaces to enhance the service life.
3. The metallurgical industry concentrator industry uses silicon nitride strength is only second to gold steel, strong wear resistance, is a strong wear resistance, high wear resistance of the pipeline, centrifugal impeller, pump room, rotary machinery, mining lining ideal raw materials, good wear resistance. The service life of plastic is 5 to 20 times, and it is one of the ideal raw materials for airline sports arenas.
4. The application of heat transfer coefficient in the industrial production level of decorative building materials porcelain and sand wheel pieces. The characteristics of radiant heat and high fever intensity, the production and manufacturing of sheet metal kiln can not only reduce the kiln volume, but also improve the storage volume and product quality of the kiln, and reduce the production time, which is the ideal indirect material for the firing of ceramic pigments.
5. The application of environmental protection and energy saving level has good thermal conductivity and heat resistance, and the heat exchanger saves 20%, fuel consumption 20%, fuel consumption 35%, and the production efficiency is increased by 20-30%. In particular, the wear resistance of the discharge water supply pipe used in the mining processing plant is 6 to 7 times that of ordinary metal composite materials.
Reaction-sintered silicon carbide seal ring features:
1, heat resistance
Because of the characteristics of silicon nitride materials, silicon nitride seals have high temperature resistance, and different processes have different types of heat resistance characteristics. Reaction-sintered silicon nitride seals can be applied from 1300 degrees, and non-pressure calcined silicon nitride seals can reach 1600 degrees.
2. Corrosion resistance
The silicon nitride sealing ring can be applied from the strong acid and alkali nature, and the sealing effect is not easy to reduce.
3, wear resistance
Reaction-sintered silicon carbide seal rings according to a certain carding process, so that the plan is highly precise and smooth, coupled with the wear resistance of silicon carbide materials, silicon nitride seal rings can be used to rub each other. Continuous high temperature characteristics do not easily reduce damage characteristics.
4. Ductility
Reactivity sintered silicon carbide raw materials as long as there is a certain processing technology, it can be converted into a variety of patterns of wool embryo, secondary processing, to make consumers want goods.
Post time: Sep-11-2023