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In the modern industrial field, high carbon silicon has become the focus of attention due to its unique properties. Do you understand what high-carbon silicon is? Let's take a closer look at high-carbon silicon and its benefits, and find out why it's so popular in so many industries.
High-carbon silicon, also known as silicon-carbon alloy, is a new type of alloy. Its main components include silicon and carbon, with silicon content usually above 55% and carbon content above 15%. In addition, it contains a small amount of silicon dioxide, phosphorus, sulfur and other components.
High Carbon Silicon is mainly used in the steel industry in the deoxidizing process of converter smelting. It can replace the traditional deoxidizers such as ferrosilicon, silicon carbide and carbon enhancers, and can make the chemical composition, mechanical properties and internal control quality of steel better than that of steel treated by the traditional process.
Due to the good affinity between silicon and oxygen, the silicon element high carbon silicon contains interacts with oxygen during steelmaking to remove oxygen from the molten steel. This process forms steel slag floating on the surface of the molten steel, thus realizing the purpose of deoxidation efficiently.
In addition, the use of high carbon silicon can effectively shorten the reduction time, reduce power consumption in the production process, significantly improve the efficiency of steelmaking.
High carbon silicon has the advantage of slag collection. Adding a certain percentage of high carbon silicon to molten steel can promote rapid agglomeration of oxides in the steelmaking process, which facilitates subsequent filtration and treatment. This property makes the steel purer and greatly improves the density and hardness of the steel, laying the foundation for the production of high-quality steel.
The decomposition and oxidation of high carbon silicon in the converter releases a large amount of heat, which raises the temperature and pressure in the furnace and creates good conditions for the deoxidation and desulfurization reactions. Stable and appropriate furnace temperature helps to ensure the smooth running of the steelmaking process and improve the quality and productivity of steel.
At present, the price of ferroalloy materials is generally high. As a new type of metallurgical material, the price of high carbon silicon is lower than traditional metallurgical materials. It can replace expensive metallurgical materials such as ferrosilicon, and can achieve the desired effect of use. The use of high carbon silicon can help manufacturers effectively save costs and increase profit margins, so it is favored by many enterprises.
Silicon-carbon alloys, as important alloy additives, are commonly used in the production of ferroalloys. Adding silicon carbon alloy to iron water can significantly improve the quality and performance of iron, and at the same time, improve the fluidity of iron, reduce the porosity, so as to make the casting quality more stable and reliable.
Silicon-carbon alloy is an excellent deoxidizer in the steelmaking process. It can effectively remove oxygen from steel and combine with oxygen to form gas, reduce the amount of gas residue in steel, improve the purity and uniformity of steel, reduce inclusions, and give steel better processing performance and corrosion resistance.
In the casting process, silicon-carbon alloy can act as a densifier. It can effectively change the morphology and distribution of carbides in iron to make it more uniform, which in turn improves the strength and toughness of the alloy. This is critical for the production of castings with high mechanical property requirements.
Pure silicon metal and carbon materials are mixed in a specific ratio, and appropriate amounts of flux and additives are added. The mixing process ensures that the raw materials are well blended to guarantee the homogeneity and stability of the subsequent smelting process.
The mixed raw materials are put into special electric furnaces or melting furnaces for high-temperature smelting. During the smelting process, the metal silicon in the mixture reacts with carbon to form a silicon-carbon alloy through precise control of the heating temperature and the action of the reducing agent.
The silicon carbon alloy obtained from smelting may still contain certain impurities, which need to be refined and purified. The refining process includes slag removal, deoxidation and desulfurization to improve the purity and performance of the alloy.
Refined and purified SiC alloys can be molded according to specific needs. Through pressing, sintering, casting and other processes, they are prepared into products of different shapes and sizes.
Quality control is crucial in the production process of silicon carbon alloys. Through testing methods such as chemical analysis, physical property testing and metallurgical microscope observation, we ensure that the composition and properties of the products meet the standard requirements.
For a long time, the recovery rate of traditional alloys has been greatly affected by converter operation. Uncertainties in steel production, critical temperature and slag quantity of steel enterprises lead to obvious fluctuations of alloy composition in the finished products, which in turn results in low pass rate of finished products' internal control indexes.
The iron and steel industry is in urgent need of new alloys to solve these inherent problems, and high carbon silicon happens to have the corresponding advantages. With the steel industry's production capacity continues to grow, the market demand for high carbon silicon has shown a steady growth trend.
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