Granite precision measuring tools (square rulers, straightedges, Angle rulers, etc.) play a key role in many high-end fields due to their high precision, high stability and strong corrosion resistance.
In precision mechanical processing, it is used for calibrating the straightness of guide rails and the flatness of worktables in CNC machine tools, machining centers and other equipment. With a thermal expansion coefficient as low as (4-8) ×10⁻⁶/℃, it can resist the influence of temperature rise during the operation of machine tools. When inspecting precision parts, its low-roughness surface will not scratch the workpiece and is resistant to oil corrosion.
The aerospace and defense industries have strict requirements for precision. Granite measuring tools are used to calibrate the tenon fixtures of aircraft engine blades and inspect the mating surfaces of missile cabins, etc. Its high damping characteristic can absorb the vibration in the workshop. It has strong chemical stability and can adapt to the special process environment of the aerospace workshop, ensuring the manufacturing accuracy of key components.
In the field of electronics and semiconductor manufacturing, granite measuring tools are used for the calibration of guide rails in equipment such as photolithography machines and wafer dicing machines, as well as for the inspection of chip packaging fixtures. Its characteristic of no metal ion precipitation avoids contaminating the semiconductor clean workshop, ensuring the precision of nano-scale lithography and the quality of SMT patch soldering.
Metrology testing and research institutions use granite measuring tools as benchmarks to calibrate other metal measuring tools. They have excellent long-term accuracy retention, and the flatness change after 10 years of use is ≤±0.5μm/m. It is also often used as a high-precision measurement reference in materials science and optical engineering experiments.
In addition, granite measuring tools are also applied in the manufacturing of medical devices and optical instruments, such as calibrating the joints of surgical robots and the bases of astronomical telescope brackets, to ensure that the equipment achieves sub-millimeter positioning accuracy and aberration-free observation effects. With outstanding performance, granite precision measuring tools have become the "precision cornerstone" of high-end manufacturing.
Post time: May-22-2025