Stone polishing is an important process for stone conservation. Some stones can be polished directly, and polishing is mainly to increase the brightness of the stone surface.
Stone polishing is generally carried out according to the procedure of rough grinding → semi-fine grinding → fine grinding → fine grinding → polishing, and some of the rough grinding steps can be omitted, mainly depending on whether the surface of the original stone has undergone preliminary treatment.
①Coarse grinding: the grinding disc is required to take a deep knife, the grinding efficiency is high, the grinding pattern is coarse, and the ground surface is rough. It mainly removes the saw blade marks left by the stone in the previous process and the smoothness of the stone , The modeling surface is ground in place; ②Semi-fine grinding: remove the traces of rough grinding, form new finer lines, and make the stone surface smooth and smooth; ③Fine grinding: The pattern, particles and color of the stone surface after fine grinding have been clearly displayed, the surface is fine and smooth, and there is a weak gloss; ④Fine grinding: The surface of the stone after the precision grinding has no traces of naked eyes. The surface is getting smoother, and the gloss can reach up to 55 degrees or more; ⑤ Polishing: Use a stone polishing machine marble cnc cutting and polishing machine for sale to grinding the stone from coarse to fine stone from No. 50 to No. 3000 to make the ground bright and smooth as new. The polished stone surface is as bright as a mirror, and its gloss can reach over 85 degrees. According to different types of stone, different polishing processes are used.
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