Silicon carbon alloy

Silicon carbon alloy, also known as high carbon silicon, is a new type of alloy for converters. Its primary components are silicon (Si) and carbon (C), along with small amounts of aluminum (Al), calcium (Ca), iron (Fe), and trace impurities such as manganese (Mn), phosphorus (P), and sulfur (S). The silicon content typically ranges from 50% to 70%, while the carbon content ranges from 10% to 30%. A higher silicon content broadens the application range of the silicon carbon alloy, but also increases the alloy's price.

Physical Properties

Density

Silicon carbon alloys have a lower density than steel but a higher hardness, exhibiting high strength, hardness, and toughness.

Electrical and Thermal Conductivity

Silicon carbon alloys also have superior electrical and thermal conductivity to steel, making them particularly advantageous in the manufacture of carbide cutting tools, automated machinery parts, and high-speed steel.

Melting Point

Silicon carbon alloys have a high melting point, reaching approximately 1680°C. This allows them to operate stably in high-temperature and high-pressure environments, making them suitable for manufacturing high-temperature resistant materials and high-temperature alloys.

Chemical Properties

Oxidation Resistance and Corrosion Resistance

Silicon carbon alloys exhibit excellent oxidation resistance and corrosion resistance, remain stable at high temperatures, and possess a low coefficient of expansion and excellent thermal stability. These properties enable them to operate and exist stably in a variety of media.

Deoxidation Properties

Silicon carbon alloys contain silicon. When added to the steelmaking process, the silicon reacts with oxygen, deoxidizing the molten steel and improving its hardness and quality. Furthermore, the silicon in the silicon carbon alloy has a good affinity for oxygen, preventing the molten steel from splashing.

Slag Collection Properties

Silicon carbon alloys also have the advantage of slag collection. Adding a certain proportion of silicon carbon alloy to molten steel can quickly aggregate oxides formed during the steelmaking process, facilitating filtration and processing, resulting in a purer molten steel and significantly improving its density and hardness.

Uses of Silicon Carbon Alloy

First, it can replace ferrosilicon, silicon carbide, and recarburizers in the deoxidation alloying process of converter steelmaking. This alloy consistently improves molten steel quality, enhances product quality, and enhances new properties.

Second, the use of silicon carbon alloys reduces the amount of alloy added, lowering steelmaking costs and thus increasing economic benefits.

Silicon carbon alloys are primarily used in the deoxidation alloying process of converter steelmaking. For a long time, the variety of alloys used in converters has been relatively limited. Traditional silicon-manganese alloy and ferrosilicon resources are becoming increasingly scarce, leading to rising market prices and increased converter steelmaking costs. The emergence of silicon-carbon alloys offers a new option for converter steelmaking, effectively addressing these issues.

The procurement process for silicon carbon alloys does involve some potential risks, which could adversely impact a company's production and operations.

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