High Hardness Unpressurized Silicon Carbide Nozzle - China Suppliers & Factory with Wear and Corrosion Resistance
The Mohs hardness of silicon carbide is as high as 9.2-9.3, and its microhardness is much higher than that of cemented carbide and alumina ceramics. This makes the nozzle effectively resistant to direct scouring and cutting wear of high-speed particles such as emery, glass beads, steel shots, etc.
Under the same working conditions, its wear life is more than 10 times that of tungsten steel (cemented carbide) nozzles and 5-8 times that of alumina ceramic nozzles, which is close to the level of hot-pressed boron carbide nozzles. The frequency of downtime and replacement is greatly reduced, the production efficiency is improved, and the comprehensive cost of use is reduced.
Silicon carbide is a compound with extremely strong covalent bonds and extremely stable chemical properties. It does not react with any known acid, alkali and salt solutions at room temperature, and can withstand the erosion of strong acids, strong alkali and various corrosive solvents for a long time.
This property makes it particularly good in strong corrosion conditions such as wet sandblasting in the chemical industry, chemical spraying in wastewater treatment plants, and lime slurry injection in flue gas desulfurization (FGD), without structural damage or performance degradation due to chemical corrosion.
Through precisely controlled sintering aids and processes, our pressureless sintered silicon carbide achieves a density close to theoretical values (>98%), with a uniform structure and no internal defects, ensuring consistent performance.
Compared with hot press sintering, the pressureless sintering process is easier to prepare nozzle products with complex shapes and larger sizes, meeting the diverse needs of customers.
Pressureless sintering avoids expensive hot-pressing molds and extremely high equipment costs, and provides a much more competitive price than hot-pressed sintered boron carbide and reactive sintered silicon carbide while maintaining excellent performance.
Silicon carbide features an exceptionally high Mohs hardness of 9.2-9.3. Its microhardness is significantly superior to cemented carbide and alumina ceramics, allowing it to withstand high-speed abrasive particles like emery, glass beads, and steel shots.
Under identical operating conditions, the wear life of silicon carbide nozzles is over 10 times longer than tungsten steel (cemented carbide) nozzles and 5-8 times longer than alumina ceramic nozzles, closely matching the performance of hot-pressed boron carbide nozzles.
Yes. Because silicon carbide consists of extremely strong covalent bonds, it is chemically stable and does not react with any known acid, alkali, or salt solutions at room temperature, ensuring long-term corrosion resistance.
They are highly suited for harsh chemical environments, including wet sandblasting in chemical processing, chemical spraying in wastewater treatment plants, and lime slurry injection during flue gas desulfurization (FGD).
Pressureless sintering achieves a high density (>98%) and uniform, defect-free structures. It allows for the production of complex shapes and larger sizes more easily, and is highly cost-effective by eliminating the need for expensive hot-pressing molds.