Granite has been a popular choice for precision assembly devices for many years. While metal may seem like a viable alternative for such high-precision products, there are several reasons why granite is the preferred material.
Firstly, granite has a high level of dimensional stability. This means that it is less likely to warp or flex under load or temperature changes. This is especially important in the case of precision assembly devices, as any slight warp or flex can result in errors in the assembly process. Metal, on the other hand, is known to expand and contract under heat which can have a negative impact on assembly accuracy.
Secondly, granite has a low coefficient of thermal expansion. This means that even with a temperature change, granite will not expand or contract significantly - ensuring accuracy is maintained. This is essential for precision assembly devices, as any changes in size or dimension can result in incorrect assembly.
Thirdly, granite has excellent damping properties. This means that vibrations are absorbed and dissipated quickly, resulting in a more stable working environment for the precision assembly devices. This factor alone is enough to justify the preference for granite over metal, where vibrations can result in errors in the assembly process.
Lastly, granite is a very hard and durable material. It is resistant to wear and is not susceptible to corrosion, making it a cost-effective choice in the long run. It also requires very little maintenance and can last for many years, making it an ideal investment for precision assembly devices.
In conclusion, while metal may seem like a viable option for precision assembly devices, granite is still the preferred material. Its dimensional stability, low coefficient of thermal expansion, excellent damping properties and durability make it an ideal choice for high-precision applications. It is also cost-effective in the long run, making it an investment worth making.
