quality Wear Resistant Ceramic Pipe & Alumina Ceramic Pipe manufacturer

When choosing 92% or 95% alumina ceramic sheets, you need to consider multiple factors such as the use environment, performance requirements, and cost. The following are some reference points: Use environment Chemical environment: If the ceramic sheet will be exposed to corrosive chemicals such as strong acids and alkalis, 95% alumina ceramic sheets are a more suitable choice due to their higher alumina content and better corrosion resistance. For example, in application scenarios such as the lining of chemical raw material storage tanks and the inner wall of chemical delivery pipelines, 95% alumina ceramic sheets can better resist chemical erosion and extend the service life of equipment.   Temperature environment: For high temperature environments, 95% alumina ceramic sheets have better high temperature resistance and can withstand higher temperatures without deformation or performance degradation. For example, in high temperature applications such as high temperature components of aircraft engines and heating element supports of industrial furnaces, 95% alumina ceramic sheets are more reliable. If the ambient temperature is relatively low, 92% alumina ceramic sheets can usually meet the requirements and have certain cost advantages. Mechanical environment: In high-friction, high-impact mechanical environments, such as wear-resistant linings of mining machinery, material conveying pipelines in the cement industry, etc., the high hardness and high wear resistance of 95% alumina ceramic sheets can better resist wear and impact, reduce replacement frequency, and improve equipment operation efficiency. However, if the mechanical stress is small, 92% alumina ceramic sheets can also provide sufficient wear resistance and reduce costs.     Performance requirements Strength and hardness: The bending strength of 95% alumina ceramic sheets is ≥ 300MPa, and the Vickers hardness is ≥1200HV10; while the bending strength of 92% alumina ceramic sheets is ≥ 280MPa, and the Vickers hardness is ≥1000HV10. If the equipment or components need to withstand greater pressure, wear, or impact, such as the lining plates and ceramic plungers of mining machinery, the high strength and high hardness of 95% alumina ceramic sheets can provide better support and wear resistance, and extend the service life.   Fracture toughness: The fracture toughness of 95% alumina ceramic sheets is 3.2MPa・m^(1/2), which is slightly higher than the 3.0MPa・m^(1/2) of 92% alumina ceramic sheets. In working conditions where there may be impact or stress concentration, the fracture toughness of 95% alumina ceramic sheets is more advantageous, which can reduce the risk of ceramic sheet rupture and improve the safety and reliability of components.   Electrical insulation performance Alumina ceramics have excellent electrical insulation performance. 95% alumina ceramics have better insulation performance, higher resistivity, and more stable dielectric constant. Using 95% alumina ceramics can improve the stability and reliability of the circuit, reduce the risk of leakage and short circuit, and ensure the normal operation of electronic equipment.   Cost factors The production cost of 92% alumina ceramic sheets is relatively low, and the price is cheaper. In some cases where the performance requirements are not extremely stringent and the budget is limited, such as ceramic pipes, ordinary ceramic linings, etc., 92% alumina ceramic sheets are a more cost-effective choice, which can reduce production costs while meeting basic usage requirements.

To judge the quality of wear-resistant ceramic lining glue, you can start from the following aspects:   Appearance and packaging Glue appearance: High-quality glue usually has a uniform texture, without precipitation, stratification or agglomeration. If the glue has obvious particles, turbidity, discoloration, or is uneven, it may mean that there is a problem with the quality.   Packaging label: The product name, model, specification, production date, shelf life, ingredients, instructions for use, precautions, and other information should be marked on the packaging of regular products. If the label is incomplete or unclear, it may be an irregular product, and its quality is difficult to guarantee.   Physical property test Bond strength: This is a key indicator to measure the quality of glue. It can be tested by tensile test, shear test, and other methods. According to relevant standards, the ceramic sheet bonded by glue is stretched or sheared with the substrate, and the maximum force value at the time of destruction is measured and converted into bond strength. Generally speaking, the shear strength of good quality glue should not be less than 15MPa at room temperature when steel-ceramic bonding.   Hardness: Appropriate hardness helps the glue maintain good performance in wear-resistant applications. It can be measured by tools such as Shore hardness tester. Generally, the hardness of wear-resistant ceramic lining glue is ideal between Shore D 70-90. Too hard or too soft may affect its wear resistance and impact resistance.   Flexibility: Evaluated by bending test or flexibility tester. Paste the ceramic sheet coated with glue on the flexible substrate, then bend it to observe whether the glue cracks or falls off. High-quality glue can still maintain good bonding state under a certain degree of bending deformation, showing good flexibility and being able to adapt to slight deformation of the equipment during operation. Chemical performance test Corrosion resistance: Soak the ceramic sheet coated with glue in different chemical media, such as acid, alkali, salt solution, etc., and observe the changes in the appearance and bonding properties of the glue after a certain period. After soaking for a specified time, good quality glue should not have obvious swelling, discoloration, shedding, etc., and the decrease in bonding strength should not exceed the specified value. For example, in the acid resistance test, after soaking in a 5% sulfuric acid solution for 24 hours, the glue performance remains stable.   High temperature resistance: Use instruments such as thermogravimetric analyzers and differential scanning calorimeters to simulate the use environment of glue at different temperatures, and observe its thermal stability, weight loss, and glass transition temperature. Good wear-resistant ceramic lining glue should be able to maintain the stability of its physical and chemical properties within the normal operating temperature range of the equipment, and no decomposition, carbonization, etc. will occur.   Practical application test Simulated working condition test: According to the actual working conditions of the equipment, such as the material flushing speed, particle size, temperature, humidity, etc., a similar working condition environment is simulated in the laboratory, and the test pieces with ceramic sheets are tested. Observe the wear resistance and bonding performance of the glue under the simulated working conditions. If the ceramic sheet can remain firmly bonded for a long time under the simulated working conditions, and the glue has no obvious wear and damage, it means that the glue quality is good.   Long-term use tracking: For the glue that has been used in the actual equipment, long-term tracking observation is carried out. Understand its durability, reliability, etc., during actual operation. The quality of the glue is comprehensively evaluated by regularly checking the bonding state of the ceramic sheet and the wear of the glue. If the ceramic sheet is still firmly bonded after long-term use and the glue has no obvious failure phenomenon, it means that the quality of the glue is reliable.   Quality certification and test report Quality certification: Check whether the glue has passed relevant international or domestic quality certifications, such as ISO 9001 quality management system certification, ISO 14001 environmental management system certification, etc. These certifications indicate that the manufacturer follows certain standards and specifications in the production process, and the product quality is guaranteed to a certain extent.   Test report: The manufacturer is required to provide a test report issued by an authoritative third-party testing agency. The report should include the test results of various performance indicators of the glue, such as bonding strength, hardness, corrosion resistance, high temperature resistance, etc. The test report can intuitively reflect the quality level of the glue and ensure that it meets relevant standards and usage requirements.