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Marble square box
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Product serial number
Marble measuring tools series
The marble box material is Jinanqing, the granite has black luster, the structure is precise and uniform in texture, the stability is good, the strength is high, the hardness is high. The working surface is scraped or precision grinding process, used to measure the straightness and verticality of the workpiece. And equipment installation.
The marble square box is used to detect the flatness and verticality of parts, workpieces, machine tables, guides and precision work. The square box has the advantages of high precision, no rust, acid and alkali resistance, non-magnetization, invariable type, good wear resistance and the like. It can be stable under heavy load and normal temperature.
Advantages of the marble square box:
The marble square box has a dense structure, a smooth surface and wear resistance, and a small roughness value. The marble is naturally aged for a long time, and the internal stress completely disappears, so that the material is stable and does not deform. Due to the magnetic reaction of marble-based non-metallic materials, there is no plastic deformation.
The marble square box has the advantages of high precision, no rust, acid and alkali resistance, non-magnetization, invariable type, good wear resistance and the like, and can be stable under heavy load and general temperature.
The marble square box is a precision reference measuring tool made of natural stone material. In use, even if you are hit by heavy objects, you can drop at most a few stones. Does not affect the accuracy of use.
Marble square box verification method: For a square box with a side length of 315 mm and below, a 1 mm gauge block is placed on both ends of the square box to be inspected, and a knife-shaped ruler is placed on the gauge block working surface, and then The tapping block of each of the tested points is tested, and the difference between the size of the equivalent block group just inserted and the size of the measuring block at both ends is the deviation between the two ends of the detected point. This test shall also be carried out on several sections in the longitudinal, transverse and diagonal directions of the square face. When the error directions in the straight lines of the measured positions are the same, the large value is taken. When the error directions are inconsistent, the sum of the large positive difference and the large negative difference is taken as the flatness of the plane of the examined surface.
Standard specifications and precision parameter tables for marble square boxes:
|Accuracy level (um)||
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