Alumina Ceramic Ring Slice
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Advantages of Alumina Ceramic Ring Slice
The material of alumina ceramic ring has a Mohs hardness of 9, second only to diamond and silicon carbide, which enables it to effectively resist the impact and wear of hard particles. After surface polishing, the friction coefficient of the alumina ceramic ring can be reduced to 0.1-0.2, significantly reducing the wear between the sealing ring and the shaft sleeve, reducing energy loss, and extending equipment life.
Applications of Alumina Ceramic Ring Slice
1. Alumina eramic ring slice is a very wear-resistant precision ceramic material.
2. Alumina eramic ring slice which is widely used in electronics, steel, smelting, machinery, coal, mining.
3. Alumina eramic ring slice which is widely used in chemical, medical, military, aviation, photovoltaic semiconductor and other fields.
4. Companies with a lot of mechanical equipment wear can choose different types of products according to different needs.
Size,Performance index
Alumina ceramic performance index (Notice of Correct in Leakeage Rate）
NO. | Property | Unit | Alumina |
1 | Al2O3 | % | >99.3 |
2 | SiO2 | % | — |
3 | Density | g/cm3 | 3.88 |
4 | Water absorption | % | 0.01 |
5 | Compressive strength | MPa | 2300 |
6 | 20℃ leakage rates | Torr・L/sec | >10-11=1.33322×10-12Pa・m3/sec |
7 | Twisting in high temperature | mm | 0.2 allowed in 1600℃ |
8 | Bonding in high temperature | not bonded in 1600℃ | |
9 | 20—1000℃ coefficient of thermal expansion | mm.10-6／℃.m | 8.2 |
10 | Thermal conductivity | W/m.k | 25 |
11 | Electric insulation strength | KV/mm | 20 |
12 | 20℃direct current insulation resistance | Ohm/cm | 1014 |
13 | High-temperature insulation resistance | 1000℃ MΩ | ≥0.08 |
1300℃ MΩ | ≥0.02 | ||
14 | Thermal shock resistance | 4 times not cracked in 1550℃ | |
15 | Maximum working temperature | ℃ | 1800 |
16 | Hardness | Mohs | 9 |
17 | Flexural strength | Mpa | 350 |
Our factory
Slip casting moulding: Inject the prepared slurry into the gypsum mold and let it stand for a period of time to allow the gypsum mold to absorb moisture. The slurry forms a uniform body on the inner wall of the mold.
Isostatic pressing: During the isostatic pressing procedure, binders are blended with the ceramic powder. As a result of this process, the powder transforms into freely flowing granules that can effortlessly fill the molds.
Extrusion moulding: Suitable for long tube products, the powder is extruded into shape through an extruder.
Why Choose Us?
1.25 years of professional production industrial ceramics factory.
2. High quality products with low price.
3. High precision parts with lowest tolerance.
4. Show time for production.
5. Has a group of experienced, professional and efficient R&D team.
6. Has a good reputation in China and abroad.
7. MOQ is not limited, small quantity is welcome.
8. Vigorous team and good after-sales service.
Certificates
Feedback
1. If you have any questions or questions, please contact us and we will communicate with you as soon as possible.
2. For any other satisfaction, please also feedback to us to make our service better and better.
