Silicon carbide pump is a high-performance industrial pump. It is widely used in chemical, metallurgical and environmental protection fields due to its excellent corrosion resistance, wear resistance and high temperature stability.
Main features of silicon carbide pump:
Corrosion resistance: Silicon carbide has strong resistance to corrosive media such as acids, alkalis and salts.
Wear resistance: High hardness, suitable for conveying media containing solid particles.
High temperature resistance: Can operate stably under high temperature environment.
Lightweight: Compared with metal pumps, silicon carbide pumps are lighter and easier to install and maintain.
In the production of silicon carbide pumps, black silicon carbide and green silicon carbide are two commonly used silicon carbide materials. Their main differences are purity, hardness and application scenarios.
| PROPERTIES | BLACK SILICON CARBIDE | GREEN SILICON CARBIDE |
| Chemical | 98%sic | 99%sic |
| hardness | 9.2mohs | 9.5mohs |
| color | black | green |
| cost | lower | lightly high |
| Toughness | Good | Good |
| Applications | Wear-resistant Corrosion-resistant General working conditions | High purity High hardness, working conditions with higher requirements for corrosion resistance |
Application in silicon carbide pumps
(1) Application of black silicon carbide
– Advantages:
– Low cost, suitable for large-scale production.
– Good toughness and strong impact resistance.
– Corrosion resistance and wear resistance are still better than most metal materials.
– Applicable scenarios:
– Transporting general corrosive media (such as acid and alkali solutions).
– Used in situations where wear resistance is required (such as media containing solid particles).
– Applicable to the chemical and environmental protection industries that do not require high purity.
(2) Application of green silicon carbide
– Advantages:
– High purity, suitable for high-purity media transportation.
– Higher hardness, excellent wear resistance.
– Excellent high temperature resistance.
– Applicable scenarios:
– Transporting high-purity chemicals (such as the semiconductor industry).
– Used for transporting high-temperature, high-pressure or highly corrosive media.
– Applicable to harsh working conditions with extremely high requirements for material purity and hardness.
3. Selection recommendations
– Selection based on media characteristics:
– If the medium being transported is highly corrosive but the purity requirement is not high, black silicon carbide can be selected.
– If the medium being transported is a high-purity chemical or has extremely high hardness requirements, it is recommended to select green silicon carbide.
– Based on cost considerations:
– Black silicon carbide has a lower cost and is suitable for projects with limited budgets.
– Green silicon carbide has a higher cost, but has better performance and is suitable for high-end applications.
4. Differences in manufacturing processes
– Black silicon carbide:
– The sintering temperature is relatively low, and the process control is relatively simple.
– The molding and processing difficulty is relatively low, which is suitable for mass production.
– Green silicon carbide:
– The sintering temperature is higher, and the process control requirements are more stringent.
– The processing is more difficult, and high-precision tools such as diamond tools are required.
