A granite slab is a precision reference measuring tool made from natural stone materials. It serves as an ideal benchmark for inspecting instruments, precision tools, and mechanical components, especially for high-precision measurements. Known for its stability and accuracy, it is widely used in metrology and quality control processes.
Granite slabs are highly resistant to damage from heavy objects, but they should still be handled with care. Compared to precision measuring tools made from cast iron or steel, granite plates offer superior accuracy and long-term stability. For example, a 1000×630mm '00' grade granite slab has been tested and maintained its original precision even after one year of storage.
These slabs are manufactured from high-quality rock layers that have undergone millions of years of natural aging, ensuring excellent dimensional stability. This means you don’t have to worry about deformation caused by temperature changes. The granite used is carefully selected and subjected to strict physical testing, resulting in a fine-grained, hard material. Since granite is non-metallic, it doesn't exhibit magnetic properties or plastic deformation, making it ideal for precise applications.
Granite slabs are known for their high hardness, which ensures excellent precision retention over time. They are also resistant to rust, corrosion, and chemical damage. Unlike metal tools, they do not become magnetized or change shape under normal conditions. Additionally, they can withstand heavy loads and maintain their performance in various environments.
Thanks to the long-term natural aging process, granite has a uniform structure and a very low linear expansion coefficient. This eliminates internal stresses and prevents deformation, ensuring consistent accuracy and rigidity. Its high hardness and strong wear resistance make it a durable and reliable choice for precision measurement tasks.
In our next article, we’ll dive deeper into the common knowledge about granite slabs, brought to you by Hebei Zhaoji Precision Mold Casting Tool Co., Ltd. Stay tuned!
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