Alumina ceramic sealing ring Industrial machinery ceramic ring high
hardness insulation abrasion resistant
product name:Alumina insulating ceramics
Characteristics of alumina ceramic ring:
Alumina industrial ceramics have high hardness, high strength, and
insulation, wear resistance, corrosion resistance, and are used in
machinery manufacturing, aerospace, petrochemical and other fields.
Because of its superior performance, alumina industrial ceramics
have been more and more widely used in modern society to meet the
needs of daily use and special properties.
1 High temperature resistance : It has high thermal stability and
high temperature resistance, and can work stably in high
temperature environment for a long time without deformation,
softening or thermal expansion.
2 Corrosion resistance : The surface of the ceramic material is
flat and has good corrosion resistance. It can work stably in
strong corrosive media such as acid, alkali and salt for a long
time.
3 Wear resistance : It has high wear resistance and impact
resistance, and can effectively withstand the erosion of the medium
and particle wear, thus extending the service life of the ceramic
ring.
4 Stability : It has good stability, can maintain stable
performance in long-term use, and is not susceptible to external
interference and influence, thereby improving the reliability and
stability of the ceramic ring.
products index:
| Ceramic characteristic table |
| | name | 99% AL2O3 | 95% AL2O3 |
| physical propertyessential component | essential component | AL2O3≥99% | AL2O3≥95% |
| Density(g/cm3) | 3.85 | 3.6 |
| water absorption% | 0 | 0 |
| sintering temperature | 1690 | 1670 |
| material characters | Hardness(HV) | 1700 | 1600 |
| break off strength | >6500 | >2900 |
| compressive strength | 30000 | 25000 |
| thermal response | maximum service tempera- ture | 1500 | 1400 |
| thermal expansion coefficient | 8 | 7.8 |
| 10-6/℃ |
| 0-1000℃ |
| Heat shock resistance T(℃) | 200 | 220 |
| thermal conductivity W/m.k | 31 | 22 |
| electrical specification | volume resistivity Ω.cm | >1012 | >1012 |
| Insulation destructive power KT/m | 18 | 16 |
| dielectric constant 1MHZ(E) | 9.2-10.5 | 9.0-10 |
Company workshop equipment:
