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Properties, manufacturing processes and uses of hard material silicon carbide

Silicium carbide’s stable chemical properties, excellent thermal conductivity, low thermal extension coefficient and outstanding abrasion resistant make it ideal for many other applications than just abrasives. You can make the inner wall stronger and increase its lifetime by one to twofold. Use high-grade refractory material that is resistant to heat, low in weight and high in strength. It also has an excellent energy-saving feature. Silicon carbide low in grade (containing approximately 85% SiC) can be used as a deoxidizer. It improves steel’s quality and speed, as well as the ability to regulate chemical composition. Also, silicon carbonide is often used in the manufacture of silicon carbide electrodes.
Mohs hardness of silicon carbide is very high. (9.5 is the hardest diamond in the entire world). This semiconductor has excellent thermal conductivity. Pure silicon carbide is pure and colorless. However, industrially made brown to black can be caused by iron-containing impureties. Because of its protective silica surface, the crystal has a rainbow-like appearance.
Physiological properties of silicon carbonide
American Acheson accidentally discovered silicone carbide during the fused diamant experiment in 1891. Because it looked like a mixture, the name emery came to be used. It was created by Acheson, in 1893. It’s still in operation today. By heating quartz SIO2 or carbon, the core of a resistance furnace uses carbonaceous as its material. The heat is used to form silicon carbide.

Material structure of silicon caride
Pure silicon carbide has a transparent color and is colorless. Silicon carbide used in industrial applications can range from light yellow to dark green. Pure silicon carbide has a range of transparency. A silicon carbide crystal is broken down into cubic silicon carbide (or hexagonal) or rhombohedral siC. Many different types of -SiC exist due to various stacking sequences. There have been more than 70 such species. SiC changes to SiC after 2100 °C. Quartz sand can be used in the production of silicon carbide. You can make various size products by crushing the refined silicon carbid block, washing it with acid or alkali, and then sieving, magnetally, or water-separating, it.

Making silicon carbide
Silica carbide, due to its low content of natural material is mostly man-made. One common process is to use quartz sand mixed with coke. Next, you need to add silica or petroleum coke. Once it has reached a high temperature, it can be heated to approximately 2000° C.
It is the essential abrasive Silicon carbide (SiC), which has a high hardness but it also offers a wider range of applications than other abrasives. High-temperature resistance, thermal conductivity, as well as its essential role in electric heating, make Silicon Carbide (SiC), a popular choice for kiln furniture material. SiC products require SiC smelting blocs [or SiC particles], which are high-temperature resistant and super hard. SiC pellets have been called once: silicon carbide. This is different to natural emery which can also be known as garnet. SiC melting blocks used quartz, petroleum coke, and others in industrial production. They can be used for their raw materials as well, or to recycle auxiliary materials. After they have been processed, these materials are prepared for furnaces. By adding the proper amount salt, you can make green silicon caride wood chips. These are made at high temperatures. One individual silicon carbide electric furnace is what heats SiC smelting bricks at high temperature. It is composed of the furnace bottom, end wall with an electrode inlaid inside and removable sidewalls. Both ends of the core are connected to electrodes. Blown powder firing is the common name for the method of firing an electric furnace. Heating begins once the furnace core has been activated. Heating begins at 2500 °C, or slightly higher (2600-2700° C). SiC becomes synthesized at 1450 °C. SiC mainly forms at 1800 °C. SiC will begin to decay at 2600° C. SiC, though, can still be formed from the decomposed si. Each electric furnace group is fitted with a series of transformers. However, one electric heater is supplied during production. It adjusts the voltage to match the characteristics and power requirements of each electrical load. Heat the heater for 24 hours. After cooling off, the charging can be slowly removed.
Utilization of silicon carbide
It can also be used in the steelmaking process as a deoxidizer or to enhance cast-iron construction. It can also serve as the raw material of making silicon trichloride. It is the first raw material of the silicone resin industry. It is an innovative type of composite silicon carbide, that can replace traditional silicon powder carbon to deoxidize. The process is more stable than that of the original. It has better chemical and physical properties, shorter deoxidation times, and energy savings. The value of steelmaking lies in its efficiency. This can help improve the quality of steel and decrease the amount of raw material and other auxiliary materials. Also, it has the potential to reduce environmental pollution and enhance working conditions. Electric furnaces have many economic advantages.

Lemondedudroit, Lemondedudroit advance material Tech Co., Ltd., an experienced manufacturer of Silicon carbide, has more 12 years in chemical products research, development, and manufacturing. Contact us to inquire about high-quality Silicon carbide.

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