Use High Carbon Silicon 6818

In order to obtain special steel with qualified chemical composition and ensure the quality of steel, deoxidation must be carried out in the final stage of steelmaking. Because of the great chemical affinity between silicon and oxygen, ferrosilicon is a strong deoxidizer for steelmaking, and it can be used for precipitation and diffusion deoxidation.

Adding a certain amount of silicon to steelmaking can significantly improve the strength, hardness, and elasticity of steel. Especially when smelting special steel such as structural steel and tool steel, deoxidizers must be used.

High carbon silicon 6818 is used as a deoxidizer and alloying agent in the steelmaking industry, and as an inoculant and spheroidizing agent in the cast iron industry.

Cast iron is an important metal material in modern industry. It is cheaper than steel and easier to melt and smelt. It has excellent casting properties and much better seismic resistance than steel. In particular, ductile iron has mechanical properties equal to or close to that of steel performance.

Adding a certain amount of ferrosilicon to cast iron can prevent the formation of carbides in the iron and promote the precipitation and spheroidization of graphite. In the production of ductile iron, ferrosilicon is an important inoculant and spheroidizing agent.

Our company can supply High carbon silicon with different contents and specifications:

high carbon silicon lump (10-50mm);

high carbon silicon granule (1-3mm, 3-8mm);

high carbon silicon powder (0-3mm, 0-5mm, 0-8mm);

high carbon silicon briquette ( 10-50mm).

The content and specifications can also be customized.

The background of High carbon silicon varieties

For a long time, alloys for converters have not been adjusted. The traditional alloy variety structure is relatively simple, that is, Q195, Q235 steel grades adopt Mnsi+FeSi+SiAiCaBa+Sic+carburizer processes, HRB335, HRB400 steel grades adopt MnSi+Fesi+AiSi+carburizer production process.

In the production of stainless steel austenite 200 series-300 series and martensite 400, silico-manganese alloy and ferrosilicon are required. However, as the resources of silico-manganese alloy and ferrosilicon are becoming tighter and tighter, market prices have been rising all the way, which has gradually increased the cost of converter steelmaking and reduced the profitability of steel. 

Moreover, the recovery rate of traditional alloys is greatly affected by the converter operation, and the amount of tapping, the end temperature, and the amount of slag make the alloy composition in the finished product fluctuate greatly. As a result, the chemical composition of the smelted steel is unstable, and the qualified rate of the internal control index of the finished product is low. 

In order to save costs and improve processes, High carbon silicon has gradually become the ideal substitute for silico-manganese alloys and ferrosilicon.

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