Application range of emery
人气： Article Source: Unknown Popularity: 发表时间：2018-12-27 -Published time: 2018-12-27
Key words: Carborundum prices Emery, Emery prices, Emery manufacturers http://srjzg.com At present, the artificial production of corundum is carried out in an electric furnace, and the materials used are ground quartz sand and high quality coke. At high temperatures, carbon first becomes monoxide; carbon monoxide scavenges oxygen in silicon oxide to restore silicon. At high temperatures, silicon improves and reacts with unacted coke to form silicon carbide, which is gold 1411 sand. Salt and sawdust are also added to the material. The intention of the plant is to allow the pores in the reaction mixture to grow to satisfy the pores in order to take out the released gas. Silicon carbide was formed at 1600 ° C, but it only began to form a hexagonal arrangement and gradually grow into large crystals during 1900-2000 IC. This process took about 10-40 hours. After that, slowly cool the protector, and take out the unreacted materials, the reverberating intermediate products and the product emery. Artificial corundum (97% containing SiC) used in industry is usually colored, the most common being black or green. These colors are related to other impurities in the emery. Emery is first used in the industry as a grinding material. Its hardness is very large, so it can be used to grind solid materials such as porcelain products, Dali right, granite, etc., and it can also be used to process resistant materials, such as Xiao Rivet. However, because of its brittle function, it is less useful than corundum (platinum oxide).
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