Contact: Manager Li
Address: North of Shuiyun Village, Yuchuan Industrial Agglomeration Area, Jiyuan City
What is Emery?
American Archerson mixed clay with coke and put it in an iron bowl in an attempt to convert carbon into diamond using an electric arc. But as a result, glittering hexagonal crystals were found near the electrodes, which were different from the cubic octahedron of natural diamond. Acheson thinks this may be a new compound formed by the reaction of carbon and alumina in clay. Since there is an alumina mineral called corundum in nature, he combined the two English words of carbon and corundum as the name of this new compound, which Chinese scholars translated into "corundum". Later it became known that this compound was silicon carbide formed by the reaction of silica in clay with carbon at high temperatures. The unit cell has a face-centered cubic structure, and each unit cell contains 4 C atoms and 4 Si atoms. Similar to diamond structure. Silicon carbide is second only to diamond, boron carbide and cubic boron nitride in hardness and ranks fourth among inorganic materials. At present, high-density silicon carbide can be prepared by hot-pressing sintering. It has high strength and good oxidation resistance, and does not deform at high temperatures. It can be used as a turbine blade on a high temperature gas turbine, and can also be used as a wear-resistant sealing material. Bulletproof products such as silicon carbide, SiC, scientific name silicon carbide. Pure is colorless crystal. The density is 3.06 to 3.20. The hardness is very high, about 9 degrees on the Mohs scale. Generally, it is colorless powdery particles. After grinding, it can be used as grinding powder, can be used to make polishing paper, and can also be used to make friction surfaces of grinding wheels and vermiculite. It is made by sand and appropriate amount of carbon placed in an electric furnace to strengthen the heat. Natural corundum, also known as garnet, is a silicate mineral. Grinding materials made by hydraulic sorting, machining, screening and classification. There is a long history of production and use. In ancient China, there were historical examples of using emery to grind crystal glass and various jade. In the 1840s it was exported to Toyo. It is divided into three categories: coarse, medium and detailed. The coarse mesh is black and red, the middle mesh is light red, and the fine mesh is red and white. The size of each mesh is uniform, the particle shape is uniform, and the edges are called angular crystals. They have sharp edges and high grinding force. For stone industrial grinding marble and other soft materials. Glass industry grinding glass burrs, television picture tubes, optical instruments, lenses, prisms, clocks and glasses. Metal blasting, derusting and grinding. Printing industry grinding offset plate, and light industry processing plastic samples, leather, sandpaper and other uses. The grinding power of natural corundum is slightly lower than that of electric furnace white corundum, but it is strong-willed and has the characteristics of a shell-shaped section mouth. Its advantages are high smoothness of the grinding parts, few and shallow sand marks. The grinding surface is fine and uniform, which can improve product quality and make this product unique. The natural diamond grinding time is short, the benefit is high, and the price is low, which can make up for the short life.
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