For casting, cast iron, cast steel, castings will have a requirement for carbon, then the carburizer as the name suggests is to increase the carbon content in liquid iron, for example, in smelting commonly used charge for pig iron, scrap, return charge, pig iron carbon content is high, but the purchase price relative to scrap is higher than one section, so increase the amount of scrap, reduce the amount of pig iron, The addition of carburizer can play a certain role in reducing the cost of castings.
The use of carburizer can not only supplement the burning loss of carbon in the process of steel smelting, ensure the requirements of specific grades of carbon content of steel, but also can be used for post-furnace adjustment. As an important raw material of molten iron in induction furnace, the quality and usage of carburizer directly affect the state of molten iron.
The carbon content in the ladle can be adjusted by adding a specific grade of carburizer to the ladle after slag removal and degassing treatment to achieve the purpose of a multi-number package. The materials used in carburizing agent are mainly graphite, graphite, electrode block, coke, silicon carbide and other materials. The electrode block and silicon carbide carburizer commonly used have the advantages of high carbon content and strong oxidation resistance, but the production process is complicated and the cost is high. Using coke powder and graphite as carburizing materials, the production cost is lower than that of electrode block materials, but the ash and sulfur content are high, the carbon content is low, and the carburizing effect is not good.
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