How are landscape boulders polished?

landscape boulders are used in many fields in the market, and they need to be polished during the production process. Polishing can well reflect the gloss of stone sculpture and make them more beautiful. The polishing materials are mainly chromium oxide (Cr2O3), white corundum (M1.0), aluminum oxide (Al2O3), oxalic acid (COOH2). There are generally two types of polishing stones: resin polishing block; resin polishing disc.

Put the polishing grindstone on the product to be processed, and use mechanical equipment to run quickly and "dry polishing, wet polishing" to achieve the polishing effect. There will be strong reflected light on the surface of the product, which is commonly referred to as gloss. The principle of polishing is mainly reflected in two aspects: the principle of particle grinding; the principle of physical chemistry.

When the abrasive particles are from coarse grinding to coarse grinding and polishing, the traces of abrasive grinding on the stone surface will change from coarse to fine to no traces visible to the naked eye, and the surface will appear smooth, flat and fine. When the depth reaches 110 microns, The processed surface has a mirror luster, which is radiant and bright in color. There are two polishing processes, namely "dry polishing and wet polishing".
When the polishing stone is between "dry and wet", physical and chemical effects occur on the stone product. Dry polishing means that the temperature of the stone surface increases to evaporate the water, resulting in an increase in the concentration of the polishing stone, thereby achieving a strengthening effect, and the gloss of the product begins to reach To meet the ideal requirements, the gloss is above 85 degrees or higher.
The polishing stone is used to polish the processed product. After the polished product is hot, add water to the surface of the plate to cool down. It is not allowed to add water continuously or in large quantities, otherwise the lubricating effect of water will make the polishing unsatisfactory. As a result, dry polishing cannot be used entirely. Excessively high temperatures will burn the board surface and cause cracks on the board surface.
Generally speaking, after the product is finely ground, the gloss of the product is about 40~50, and some stones cannot reach the above gloss after fine grinding, and the gloss of this kind of product is only between 20~30 degrees after fine grinding. The previous explanation of the principle of particle grinding is not enough. This product is polished "dry and wet", the temperature rises and falls, the polishing process is strengthened, and physical and chemical reactions occur. The product undergoes "dry polishing, wet polishing", The glossiness gradually increases, and the glossiness reaches above 85 degrees.