Properties, manufacturing processes and uses of hard material silicon carbide

Silicium carbide’s stable chemical properties, excellent thermal conductivity, small 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-quality refractory material that is resistant to heat, low in weight, highly strong and energy-saving. Silicon carbide low in grade (with about 85% SiC) can be used as a deoxidizer. It improves steel’s quality and speed, as well as the ability to control its chemical composition. Also, silicon carbonide is widely used in the manufacture of silicon carbiderods for electric heating components.
Mohs hardness of silicon carbide is exceptionally high. (9.5 is second only to hardest diamond in the entire world). Silicon carbide also has great thermal conductivity. Pure silicon carbide is pure and colorless. However, industrially made brown to black can be caused by iron-containing impureties. Because of the protective silica film on its surface, the crystal has a rainbow-like glow.
Physiological properties of silicon carbonide
American Acheson accidentally discovered silicone carbide during his 1891 fused diamant experiment. Because it looked like a mixture, the name emery came to be used. It was created by Acheson, in 1893. Today’s smelting process of silicon carbide is known as the Acheson oven. 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 is an inert, transparent crystal. 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 hexagonal and rhombohedral (or cubic) SiC. The variety of stacking sequences used to create -SiC in the crystal structure can result in different types. Over 70 species have been detected. 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 temperature of 2000 ° C, it can be heated in an electric furnace.
It is essential because it has a high degree of hardness. The application range for silicon carbide, (SiC), however, exceeds the normal one. High-temperature resistance, thermal conductivity, and electrical conductivity make Silicon Carbide a popular kiln furnishings material for shuttle or tunnel kiln. This makes it an essential element of electric heating. 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 blocks to high temperature. It consists primarily of the furnace bottom, top walls and removable sidewalls. Both ends of the core are connected to electrodes. The firing process used in an electric furnace’s firing system is called buried powder fire. 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 si. Each electric furnace group is fitted with a series of transformers. However, one electric heater is provided during production. The single transformer adjusts the voltage to match the characteristics of each electrical load in order to maintain constant power. 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 for Silicon 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 properties, shorter deoxidation times, and energy savings. A great advantage of electric furnaces is their efficiency in steelmaking. They can reduce the amount of raw and other materials used, improve working conditions, and increase the overall economic benefit.

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

Inquiry us