Qingyun Hongsheng Machinery Parts Co., Ltd. is one of the most reliable manufacturers and suppliers of reaction sintered silicon carbide ceramic in China. We warmly welcome you to wholesale high quality reaction sintered silicon carbide ceramic at low price from our factory. If you have any enquiry about quotation, please feel free to email us.
Silicon carbide ceramic is a ceramic material with silicon carbide (SiC) as the main component, which has high strength, high temperature resistance and corrosion resistance, and is widely used in industrial fields.
The production process mainly includes hot pressing sintering, pressureless sintering, reaction sintering and other methods, through controlling the sintering temperature (1450-2450℃) and adding additives (such as boron carbide, alumina) to achieve densification
Products Description
The reaction sintered silicon carbide ceramic products have the following outstanding features:
Excellent mechanical properties: Extremely high hardness (Mohs scale 9.0-9.5 close to that of diamond), with a bending strength of 400-600 megapascals, and maintaining high strength even at a temperature of 1600°C.
Outstanding thermal properties: High thermal conductivity (120 - 220 W/m·K), low thermal expansion coefficient (about 4.0×10^{-6}/K), capable of withstanding high temperatures up to 1400 - 1600°C, and strong resistance to thermal shock (temperature difference exceeding 800°C).
Outstanding chemical stability: Resistant to acid and alkali corrosion, having the strongest oxidation resistance among all non-oxide ceramics, suitable for corrosive and high-temperature environments.
Durability and versatility: The durability is over 10 times that of ordinary ceramics, and it also possesses semiconductor properties (unlike ordinary insulating ceramics), making it suitable for extreme working conditions.
Silicon carbide ceramics, due to their high hardness, high temperature resistance, corrosion resistance, high thermal conductivity and excellent wear resistance, play a crucial role in various industrial fields. The main applications are as follows:
I. High Temperature and Metallurgical Industry
High-temperature furnaces: Manufacturing kiln furnaces, crucibles, burner nozzles, furnace support components, etc., capable of operating stably at temperatures above 1600°C.
Refractory materials: Used for blast furnace linings, refractory bricks, and insulation boards, resisting erosion by molten metals and significantly extending equipment lifespan.
Metal smelting: As deoxidizers to enhance steel water purity, or made into continuous casting diversion rings, thermocouple protection tubes, optimizing smelting efficiency.
2. Mechanical Manufacturing and Wear Resistance Field
Sealing components: Mechanical sealing rings used in chemical pumps and water pumps, with corrosion resistance tens of times that of ordinary metals, significantly improving service life.
Bearings and cutting tools: High-speed bearings, guide rails, and coated cutting tools, suitable for high-temperature and high-load conditions, reducing equipment wear.
Wear-resistant pipes: Mining transportation pipes, impeller linings, with wear resistance 5-20 times that of cast iron.
3. Semiconductor and Electronic Industry
Semiconductor equipment: Grinding discs, fixtures for wafer processing, resistant to high temperatures and chemical corrosion, ensuring processing accuracy.
Heat dissipation substrates: Heat dissipation substrates for high-power devices (such as IGBT, LED), with a thermal conductivity of 270 W/m·K, improving heat dissipation efficiency.
Electronic components: Lightning arresters, voltage-sensitive resistors, etc., electrical materials that utilize their nonlinear conductivity characteristics.
4. Chemical and Environmental Protection Field
Corrosion-resistant equipment: Valves, reactor linings, pipes, able to withstand strong acids and strong bases (such as 98% concentrated sulfuric acid).
Environmental applications: High-temperature smoke exhaust filters (such as waste incineration), catalytic honeycomb ceramic carriers for automotive exhaust.
Energy components: Fuel cell connectors, solar thermal power absorption heaters, with a temperature resistance of over 1000°C.
5. Special and Emerging Fields
Nuclear industry: Nuclear fuel cladding tubes, waste containers, resistant to neutron irradiation and high temperatures.
Bulletproof materials: Composite bulletproof ceramics through toughening treatment, with high hardness and low density (3.10-3.15 g/cm³).
Photovoltaic industry: Components for transporting polysilicon etching liquids, solving high wear and strong corrosion problems.
Silicon carbide ceramics are driving technological innovation in new energy (hydrogen fuel cells, photovoltaics), semiconductors, and high-end equipment, and are the preferred materials for extreme conditions such as high temperature, corrosion, and high wear.
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why choose our products
1. 20 years of experience in casting cast iron plate, quality assurance, timely delivery
2. Perfect machining and inspection equipment can directly provide finished parts and meet the inspection requirements of customers
3. It has independent import and export rights and can export products to all parts of the world
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