Silicon carbide ceramic bushings have shown significant advantages in the industrial field due to their unique physical and chemical properties, and are widely used in extreme working conditions such as high temperature, wear resistance, and corrosion resistance.
Some silicon carbide ceramic bushings & sealing rings produced by Mingrui Ceramics
The following describes the performance advantages and specific applications of silicon carbide ceramic bushings from two aspects: performance advantages and specific applications.
Performance advantages of silicon carbide ceramic bushings
1. High hardness and wear resistance
The Mohs hardness of silicon carbide ceramics can reach 9-9.5, second only to diamond, and has extremely high wear resistance.
In a high wear environment, the wear rate of silicon carbide ceramic bushings is much lower than that of traditional metal materials, and the service life is significantly extended.
Suitable for high-particle scouring and high-friction working conditions, such as mining machinery, sand mills, etc.
2. High temperature resistance
Silicon carbide ceramics can work stably in high temperature environments above 1600°C, and the mechanical properties do not decrease at high temperatures.
Low thermal expansion coefficient, good dimensional stability, suitable for working conditions with drastic temperature changes.
Commonly used in high temperature parts such as high temperature furnaces, combustion chambers, and aircraft engines.
3. Corrosion resistance
It has excellent corrosion resistance to corrosive media such as strong acids, strong alkalis, and organic solvents.
In the fields of chemical, pharmaceutical, and hydrometallurgical industries, it can replace traditional metal bushings to avoid failure caused by corrosion.
4. Self-lubricity and low friction coefficient
Silicon carbide ceramics have a smooth surface and low friction coefficient, which can reduce energy loss and wear.
Some carbon-added silicon carbide ceramic bushings further reduce the friction coefficient and extend the service life by adding self-lubricating materials such as graphite.
5. High strength and thermal shock resistance
Silicon carbide ceramics have high bending strength and compressive strength and can withstand large mechanical loads.
Excellent thermal shock resistance, suitable for fast hot and cold alternation conditions, such as glass manufacturing, ceramic sintering, etc.
6. Lightweight
The density of silicon carbide ceramics is only about 40% of that of steel, which can significantly reduce the weight of equipment and improve energy efficiency.
Specific applications of silicon carbide ceramic bushings
1. Mining and metallurgical industry
Application scenarios: ore crushing, screening, high-wear fluid transportation, mineral processing equipment, etc.
Advantages: Silicon carbide ceramic bushings can withstand high wear and strong corrosion, and the service life is more than 5 times that of traditional materials, reducing maintenance costs.
2. Chemical and pharmaceutical industries
Application scenarios: reactors, pumps, valves, pipeline linings, etc.
Advantages: Resistant to strong acid and alkali corrosion, ensuring long-term stable operation of equipment and avoiding pollution and leakage.
3. Aerospace and automotive industry
Application scenarios: aviation engine combustion chamber lining, turbine blades, automotive braking systems, turbochargers, etc.
Advantages: high temperature resistance, lightweight, high strength, improving equipment performance and reliability.
4. Mechanical seals and bearings
Application scenarios: high-speed rotating equipment, pumps, compressors, etc.
Advantages: self-lubrication, low friction, wear resistance, extend the life of seals and bearings, and reduce energy consumption.
5. Energy and environmental protection fields
Application scenarios: flue gas desulfurization nozzles, desulfurization and dust removal equipment in thermal power plants, waste incinerators, etc.
Advantages: high temperature resistance, corrosion resistance, adaptability to harsh working conditions, and improve equipment efficiency.
6. Electronics and semiconductor industries
Application scenarios: wafer processing equipment, semiconductor manufacturing equipment, etc.
Advantages: high purity, corrosion resistance, good insulation performance, meet the needs of precision manufacturing.
7. Papermaking and printing industries
Application scenarios: paper machine rollers, printing press rollers, etc.
Advantages: wear resistance, corrosion resistance, improve equipment operation efficiency and product quality.
Silicon carbide ceramic bushings have broad application prospects in mining, chemical industry, aerospace, mechanical seals and other fields due to their excellent properties such as high hardness, high temperature resistance, corrosion resistance, and self-lubrication. With the continuous advancement of material preparation technology, the performance of silicon carbide ceramic bushings will be further improved, and the scope of application will continue to expand, becoming an indispensable key material under extreme working conditions.
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