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In battery electrolyte injection equipment, the performance of core components directly depends on material selection. Three high-performance ceramic materials, namely alumina, zirconia, and silicon carbide, have become key material selections for the core components of liquid injection pumps due to their respective unique physical properties. Their performance advantages directly determine the accuracy, stability and service life of liquid injection equipment.
Alumina ceramics are widely used as the basic preferred material in precision liquid injection components. Their Mohs hardness can reach 8.5-9 grades, far exceeding that of ordinary metal materials. Leveraging excellent wear resistance, they can effectively resist fluid friction and contact wear between components during the reciprocating movement of the liquid injection pump plunger, maintain precise dimensional accuracy during long-term use and avoid liquid injection deviation problems caused by wear. At the same time, alumina ceramics have excellent chemical stability and can resist corrosion by most battery electrolytes. They operate stably under conventional liquid injection working conditions and will not chemically react with the electrolyte to generate impurities that contaminate the battery cells. Additionally, their preparation processes are mature, and they have excellent cost-effectiveness while ensuring high performance. They can meet the equipment cost control needs of large-scale industrial production, making them ideal materials for balancing performance and cost.
Zirconia ceramics, with their ultimate precision and toughness, have become the core material suitable for high-end precision liquid injection equipment. Thanks to their unique phase transformation toughening mechanism, it boasts toughness over three times that of conventional ceramics. They can effectively resist mechanical impacts and stresses during the liquid injection process, prevent brittle cracking and damage of components and significantly improve the service life and operational stability of equipment. These materials feature an extremely low wear rate and can achieve ppm-level impurity control, ensuring that the purity of the electrolyte is not contaminated. They are precisely suited for production scenarios with stringent requirements for impurity content, such as power batteries and high-end consumer electronic batteries. At the same time, zirconia ceramics can achieve extremely high machining precision. Combined with precision grinding processes, they can control the dimensional error of liquid injection components within the micron level and ensure that the liquid injection precision is stably maintained within 0.3%, perfectly meeting the stringent standards for liquid injection consistency in high-end battery production.
Silicon carbide ceramics, by virtue of their outstanding high-temperature resistance, corrosion resistance and thermal conductivity, are suitable for precision liquid injection requirements under extreme working conditions. Their Mohs hardness reach as high as 9.5, close to that of diamond, and their wear resistance is far superior to that of traditional ceramic materials, enabling them to maintain the surface finish and dimensional stability of components for a long time. In terms of high-temperature resistance, silicon carbide ceramics can work stably in high-temperature environments of 1600℃, and their thermal expansion coefficient is 1/3 that of zirconia. Even under working conditions with large temperature fluctuations, they can effectively avoid dimensional deformation caused by thermal expansion and contraction, ensuring stable liquid injection precision. In addition, they have extremely strong chemical stability and excellent resistance to corrosive media such as strong acids, strong alkalis, and hydrofluoric acid, performing outstandingly in liquid injection equipment for special electrolyte systems.
Alumina, zirconia and silicon carbide ceramics, with their unique performance advantages, form a comprehensive performance coverage. The precise application of these three materials provides highly adaptable solutions for core liquid injection components for battery production in different fields, serving as a core support for driving the development of battery liquid injection equipment toward high precision, high stability and wide working condition adaptability.
http://www.ascendtechs.com
Guangzhou Ascend Precision Machinery Co.,Ltd.
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