In the ultimate battle of "nanoprecision" in semiconductor manufacturing, even the slightest error in wafer cutting equipment could turn a chip into waste. The granite base is the unsung hero that controls the ±5um repeat positioning accuracy, rewriting the rules of precision manufacturing with its three natural wonders.
The "stabilizing anchor" against thermal deformation: The coefficient of thermal expansion of granite is as low as 5-7 ×10⁻⁶/℃, which is only one-third of that of metal materials. Under the heat impact generated by the high-speed operation of the wafer cutting equipment, ordinary materials will deform due to thermal expansion and contraction, causing the positioning of the cutting head to shift. However, the granite base can remain "motionless", fundamentally eliminating the positioning deviation caused by thermal deformation and laying a solid foundation for precision.
The "silent shield" of vibration absorption: The constant roar of machine tools and the continuous vibration of equipment in the workshop can be regarded as "fatal killers" to precision. The unique crystal structure of granite is like a natural shock absorber, capable of rapidly converting external vibrations and mechanical vibrations generated by equipment operation into heat energy for dissipation. While other bases are still "swaying" due to vibration, the granite base has created a stable platform for the cutting head that remains motionless, making ±5um accuracy possible.
Corrosion-resistant "Eternal Fortress" : Semiconductor workshops are filled with corrosive substances such as etching solutions and acid and alkali cleaners. In such an environment, metal bases will gradually rust and deform. Granite, with its inherent chemical stability, does not react with these chemical substances at all. No matter how many years it is used, it can maintain structural integrity and continuously ensure high-precision cutting.
From material talent to ultra-precision processing, the granite base has demonstrated with its strength that not all materials can meet the harsh challenges of semiconductor manufacturing. It is precisely because of these irreplaceable natural advantages that granite bases have become the key for wafer cutting equipment to achieve a repeat positioning accuracy of ±5um, and have further driven the semiconductor industry to continuously move towards higher precision!
Post time: May-14-2025