stone crafts are used in many fields in the market. Polishing is required during production. Polishing can well reflect the gloss of stone art and make it more beautiful. The polishing materials are mainly chromium oxide, white corundum, aluminum oxide and oxalic acid. 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 and the principle of physical chemistry.
Particle grinding: When the abrasive particles are from coarse grinding to coarse grinding and polishing, the traces of abrasive grinding on the surface of stone art, from coarse to fine to no traces visible to the naked eye, the surface will appear smooth, flat and fine, when the depth When it 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". The polishing grindstone is between "dry and wet". As a result, the concentration of the polishing stone increases, thereby achieving the strengthening effect, and the gloss of the product begins to meet the requirements, and the gloss reaches 85 degrees or higher.
The polishing grindstone 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. To achieve the desired effect, 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 stone arts cannot reach the above gloss after fine grinding, such as Shanxi black, black gold sand, Jining black, etc. The gloss after grinding is only between 20 and 30 degrees, which is not explained by the previous principle of particle grinding. This product is polished "dry and wet". During the temperature rise and fall, the polishing process is strengthened and physical and chemical reactions occur. , After the product undergoes "dry polishing, wet polishing", the gloss gradually increases, and the gloss reaches more than 85 degrees.
