What is the role of foundry carburizer

What is the function of casting recarburizer:

The use of recarburizers in castings can increase the amount of scrap steel and reduce or eliminate the amount of pig iron. In the electric furnace smelting feeding mode, the recarburizer should be put into the furnace together with scrap steel and other ingredients. A small dose can be added on the surface of molten iron. However, a large amount of molten iron should be avoided to avoid excessive oxidation, resulting in insignificant carburization effect and insufficient carbon content in castings. The amount of carburant added should be determined according to the ratio of other raw materials to carbon content. For different types of cast iron, different types of recarburizers should be selected according to the needs. According to the characteristics of the recarburizer itself, pure carbon-containing graphitized materials are selected to reduce excessive impurities in pig iron. The choice of recarburizer can reduce the production cost of castings.

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