Introduction:Marble flat platform, granite flat platform, T-shaped groove marble platform, testing platform, marking platform, marble workbench - Marble flat platform is a product required by many manufacturers who have special requirements for accuracy in inspection, testing, measurement, laboratory, etc. The service life of this platform can reach more than 20 years, and a longer service life has become one of the reasons for the increase in sales volume

Marble flat platform is a precision reference measuring tool made of natural stone materials, which is an ideal reference surface for the inspection of instruments, precision tools, and mechanical parts. Especially for high-precision measurement, due to its unique characteristics, cast iron plates pale in comparison.

Marble flat platformThe precision granite flat plate, granite inspection flat plate, and instrument platform are made of high-quality "Jinan green" stone material through mechanical processing and manual precision grinding. Black luster, precise structure, uniform texture, good stability, high strength, high hardness, able to maintain high precision under heavy load and general temperature, and has the advantages of non rusting, acid and alkali resistance, wear resistance, non magnetization, and invariance Granite slabs are suitable for measuring tools in mechanical factories.

The precision of the marble flat platform refers to the American National Standard, and the flatness tolerance is based on:GB4987-85 standard:

Level 000=1 × (1+d/1000) um

Level 00=2 × (1+d/1000) um

Level 0=4 × (1+d/1000) um

Level 1=8 × (1+d/1000) um

（D is the diagonal mm) (The measurement temperature is generally at 21 ± 2 ℃)

The main characteristics of marble flat platform are stable accuracy and easy maintenance. This is because:

① The marble platform has a dense organizational structure, smooth and wear-resistant surface, and low roughness values;

② After long-term natural aging, the internal stress of marble completely disappears, the material is stable, and it will not deform;

③ Acid, alkali, corrosion, and magnetic resistance;

④ Will not get damp or rust, easy to use and maintain;

⑤ Small coefficient of linear expansion, less affected by temperature;

⑥ After collision or scratch on the working surface, only pits will be formed, without any protrusions or burrs, which has no impact on the measurement accuracy.

The main disadvantage of rock slabs is that they cannot withstand excessive impact and knocking, and will deform due to high humidity. Their moisture absorption is1%.

Requirements for marble flat platform working face:

The working surface of the marble platform shall not have defects such as sand holes, shrinkage porosity, scratches, bumps, air holes, cracks, slag and rust that seriously affect its appearance and performance. The concave or fallen corners on the non working surface of the marble platform are allowed to be repaired.