Due to its excellent properties, Si3N4 has been widely used in the metallurgical industry. For example, Si3N4 combined with SiC products have been widely used in blast furnace linings and side walls of aluminum electrolytic cells. Unfired bricks for blast furnace ceramic cups made from Si3N4 and corundum have also been produced and used in blast furnaces. The successfully developed Si3N4-Al2O3-SiC-C series iron channel material increases the primary iron flow (without repair); and the blast furnace body containing Si3N4 gunning has been used in Century Production as a new variety due to its good operation.
The main application of silicon nitride in bearings is to make hybrid bearings. Hybrid bearings are bearings in which the balls or rollers are made of silicon nitride and the inner and outer rings are made of metal. Silicon nitride is used as a ball or other roller in hybrid bearings, and its application market is also growing. Silicon nitride will show very similar characteristics to bearing steel when worn, that is, it will only peel off and form pitting, rather than completely broken. Although the friction resistance will increase the noise, the bearing can still operate. Even in the case of poor lubrication or even dry operation, or in the case of sudden material damage, it can continue to operate, showing a good emergency state.
Si3N4 is also widely used in other fields. Such as Venturi bushings of sulfuric acid industrial boiling furnace purification systems; sleeve shafts of acid pumps, magnetic pumps, high-pressure slow-flow pumps, and sealing rings of refrigeration compressors; temperature measuring thermocouple tubes for light metal smelting and melting; hydraulics of various washing plants The sand sinking port of the cyclone; used for furnace lining materials and various parts that require high temperature, wear resistance, and thermal shock resistance. More information about silicon nitride can be found on our company's official website. New and old users are welcome to check it out.
