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What is ceramic sleeve?
Recently 95% alumina ceramic sleeve lined pipes, elbows and T pipes have been largely applied in lithium battery material conveying system. The main raw material of wear resistant ceramic ring is a special kind of ceramic with AL2O3 as the and the rare metal oxide as the flux, which is melted by high temperature at 1700 °C. The big diameter ceramic sleeve is always a big problem for the ceramic tube manufacturers since it’s very difficult to control the deformation rate of the ceramic sleeve after it’s sintering.
In addition, the flatness of ceramic casing is also an important factor affecting the size of lithium battery materials. We did a lot of analysis and improved our manufacturing techniques to solve both of these problems. Now it can help lithium battery delivery systems better solve these problems, with better material purity, longer service life and better economic benefits.
Applications
The combination of high rigidity of ceramic and high elasticity of steel gives the pipe unmatchable features as an abrasion resistant, heat resistant and corrosion resistant material for use in the fields of power generation, metallurgy, mining, and chemical industry etc. It has many advantages over steel pipes, cast stone pipes, and steel-plastic compound pipes.
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Sleeve lined process
For different production environments, our company has developed a wear-resistant pipe for a variety of media, based on the temperature, wear and corrosion requirements of the field media, and for the initial application of the scene, our company to provide wear-resistant ceramic ring for the Lined composite straight pipe design to meet the on-site wear resistance, heat resistance and corrosion resistance requirements, in view of this program for the new design (formerly ceramic chip technology, there are many gaps, easy to wear).
Technical index of binder
| Item | Data | Characteristics of binder |
|---|---|---|
| Density (g/cm3) | 1.32 |  |
| Compressive strength (MPa) | 40 | |
| Shear Strength MPa | 26 | |
| Impact toughness Kj/m2 | 10 | |
| Hardness HB | 9.5 | |
| Elastic Modulus GPa | 2.2 | |
| Expansion coefficient 10-6/℃ | 20.1 | |
| Softening temperature℃ | 263 | |
| Coking temperature℃ | 335 | |
| Acid resistance（24H） | Stability | Test solution : 15%H2SO4 |
| Alkali resistance（24H） | Stability | Test solution: NaOH |
Transport and installation precautions
Matters needing attention for transportation and installation of ceramic pipe
The ceramic composite pipe has high hardness and good toughness, but it should be put gently in the process of transportation and installation to avoid serious collision, especially to avoid direct contact with metal instruments or impact on the ceramic layer on the end surface.
The ceramic lined bending pipe is installed with directivity. When the bending pipe is installed, the direction indicated by the arrow on the surface of the bending pipe should be consistent with the flow direction of the conveying medium.
When installing the pipe, the pipe should be aligned with the center line and level should be adjusted to make sure that both ends meet accurately.The displacement of both ends should be controlled within 1.0mm.
When the flexible pipe joint is used to connect and install the pipe, the inserted lengths of both ends of the flexible pipe joint shall be adjusted symmetrically.Since the thermal expansion coefficient of the composite pipe is about 1/3 of that of steel, the expansion clearance can be reduced by 3-5mm.
When using flange connection, the flange end shall be flush with the end of the composite pipe.
Due to the excellent welding performance of the composite pipe, the pipe connection can be conducted by welding. However, when welding, 45o-60o “V” type slope Angle is 2-4mm and gap is 0.8-1.2mm.