In the forefront of precision manufacturing and scientific research exploration, every trace of error may become a "roadblock" that prevents breakthroughs. As the key equipment to achieve high precision motion control, the performance of precision static pressure air floating motion platform is directly related to the quality and success of the results. Among the many influencing factors, the granite base, with its unparalleled characteristics, has become the core element of ensuring the excellent performance of the platform.
Granite, after millions of years of geological changes tempered, the internal structure is dense and uniform, mainly by quartz, feldspar and other minerals closely intertwined. This naturally formed unique structure gives the granite base a series of outstanding properties.
Extremely stable, isolated from outside interference
Vibration in the external environment is the enemy of accuracy for precision static pressure air floating platform. The vibration generated by the operation of large machinery and equipment in the factory floor and surrounding traffic may be transmitted to the moving platform through the ground. However, the granite base is like a solid "earthquake resistant fortress." Its complex crystal structure can effectively block and attenuate vibration, and through practical tests, the vibration amplitude transmitted to the platform can be reduced by more than 80%. In the semiconductor chip manufacturing workshop, the photolithography process requires the positioning accuracy to reach the nanometer level, and the precision static pressure air floating movement platform supported by the granite base can ensure the stable operation of the chip lithography equipment in the complex vibration environment, accurately complete the engraving of the circuit pattern, and greatly improve the yield of chip manufacturing.
Good thermal stability, not afraid of temperature changes
Temperature fluctuations will cause many materials to expand and shrink, which will affect the accuracy of the equipment. However, the granite base shows extraordinary thermal stability, and its coefficient of thermal expansion is extremely low, generally at 5-7 ×10⁻⁶/℃. In the field of astronomy, the precision static pressure air floating movement platform used for fine tuning of large telescope lenses, with granite base, even in the face of drastic changes in temperature difference between day and night, it can ensure that the positioning accuracy of the lens is maintained at the sub-micron level, helping astronomers to clearly capture the subtle changes of distant celestial bodies and explore the mysteries of the deep universe.
High hardness and wear resistance to ensure long-term use
In the long run of precision static pressure air floating platform, although there is air floating support between the platform and the base, there is still a certain degree of friction. Granite hardness is high, Mohs hardness can reach 6-7, with excellent wear resistance. In the materials science laboratory, the frequently used precision static pressure air floating movement platform, its granite base can effectively resist long-term friction loss, compared with the ordinary base, can extend the maintenance cycle of the platform by more than 50%, reduce equipment maintenance costs, and ensure the continuity of scientific research work.
The choice of granite base for precision static pressure air floating movement platform is the ultimate pursuit of precision, stability and durability. In the fields of semiconductor manufacturing, optical instrument manufacturing, aerospace, scientific research and testing, which require almost strict accuracy, the precision static pressure air floating movement platform supported by the granite base is playing an irreplaceable key role, promoting the development of various industries towards higher precision.
Post time: Apr-09-2025