The granite slab is a precision reference measuring tool made of natural stone materials. It is an ideal datum for inspection of instrumentation, precision tools and mechanical parts. It is especially suitable for high-precision measurement. Granite slab is a precision reference measuring tool made of natural stone material. It is an ideal datum for inspection of instrumentation, precision tools and mechanical parts. The use of the granite platform is becoming more and more extensive. It is very necessary to remind you to understand the maintenance method of the granite platform. Here is a brief introduction:
1. Granite plate working surface shall not have defects such as sand holes, shrinkage, scratches, bumps, pores, cracks, slag inclusions, etc., which seriously affect the appearance and performance;
2. The depression or corner of the non-working surface of the granite plate allows repair;
3. The vertical tolerance of the side of the granite slab to the working surface and the verticality tolerance of the two adjacent sides of the slab are in accordance with the 12 levels specified in GB/T1184;
4. The concentrated load area in the center of the granite slab working face, the applied rated load and the allowable deflection value;
5. If a threaded hole (or groove) is provided on the flat surface of the 0th grade and the 1st grade, the part should be no higher than the working surface;
6. When using the diagonal method or grid method to test the flatness of the flat working surface, the fluctuation of the air level and the plane fluctuation of the working surface should be checked.
The above is an introduction to the small knowledge of the granite platform. I hope to help you. If you have any questions, please contact our company, we will find a way to help you solve it http://news.chinawj.com.cn
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