Si-C silicon-carbon alloy is a new type of alloy used in converters. Most of the wholesale users of silicon-carbon alloys replace ferrosilicon, silicon carbide, and recarburizers for the converter smelting deoxidation alloying process.
Si-C silicon-carbon alloy is a new type of alloy used in converters. Most of the wholesale users of silicon-carbon alloys replace ferrosilicon, silicon carbide, and recarburizers for the converter smelting deoxidation alloying process.
Optimization of silicon-carbon alloy variety structure:
1. Conducive to the reduction of production costs.
2. Improve the quality of molten steel.
3. Reduce the amount of alloy added.
4. Adjust the main alloy.
Silicon-carbon alloy replaces ferrosilicon, silicon carbide, and recarburizer, reduces the amount of deoxidizer, performs converter deoxidation alloying, and has a stable effect. The chemical composition, mechanical properties and internal control quality of the steel are better than traditional processes.
Tests and production use show that the use of Si-C alloy for the deoxidation alloy process of the converter greatly reduces the cost of steelmaking per ton of steel, creates considerable economic benefits, and improves the competitive advantage of steel in the market.
The background of the production of silicon-carbon alloy varieties:
For a long time, alloys for converters have not been adjusted. The traditional alloy variety structure is relatively simple, that is, Q195 and Q235 steel grades use Mnsi+FeSi+SiAiCaBa+Sic+ recarburizer technology, and HRB335 and HRB400 steel grades use MnSi+Fesi+AiSi+ Carbon agent production process. With traditional silico-manganese alloys, ferrosilicon resources are becoming increasingly tight, and market prices are rising all the way, making converter steelmaking costs gradually increase, reducing the profit margin of steel, and the recovery rate of traditional alloys is greatly affected by converter operations. 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 internal control indicators of the finished product is low.
