Exterior marble platform marble platform surface quality requirements

Marble is used as a work platform to detect, measure, benchmark crossed the plane of the appliance, the platform can perform many complex spatial geometry measurements with fast, accurate, simple, and economical advantages. Marble platform Appearance: 1, factory Make or registered trademarks; 2, the product name; 3, size and accuracy class; 4, product number and date of manufacture; 5, the implementation of standards Standard; 6, marble platform certificate; qualified There should be marked on the certificate number of qualified products; 7, marble platform should have three main support points supporting point positions meet the minimum distortion principles, and generally in the platform at the side of the 2/9 size larger than 1000 * 1000mm platform should have assisted support point. Marble platform surface quality requirements: 1. Face the platform should be uniform color, without cracks, dents and loose tissue, grinding marks, scratches and other defects affect the accuracy of the platform; 2, initial verification platform appeared depressed Face or off angle should not be repaired. Marble work surface subsequent verification platform allows the defect does not affect performance; 3. Face the platform surface roughness Ra of the maximum allowable value of 0.32-0.63 micron, 10 micron side; 4000 level and 00 Platform proposal does not set the carrying handle; 5, if 0 and 1 work surface platform screw holes (trenches), should not be higher than some of its Face. Note: The test methods and test the use of sight of the rest. Reference Standard: GB / T 20428-2006 Flat Rock national standards.