In the smelting process of iron and steel products, due to the influence of smelting time, holding time, overheating time and other factors, the smelting loss of carbon in the molten iron increases, resulting in a decrease in the carbon content in the molten iron, resulting in the carbon content in the molten iron not reaching the desired level of refining Theoretical value.
There are many materials that can be used as recarburizers for cast iron. Commonly used are artificial graphite, Calcined Petroleum Coke, natural graphite, coke, anthracite and mixtures made of these materials.
Used in casting, cast iron, cast steel and castings, all have carbon requirements. Then the recarburizer is to increase the carbon content in the molten iron. Pig iron has a high carbon content, but the purchase price is higher than that of scrap steel. Therefore, increasing the input of scrap steel, reducing the input of pig iron, and adding recarburizers can play a role in reducing the cost of castings.
Therefore, because there are too many types of recarburizers, there are too many models and varieties, so there are many different choices in the final selection. Then you must pay attention to choosing the right recarburizer for casting production, except for the price factor. On the other hand, there is also a big factor in the quality of the castings required. Is it better to use low-sulfur and low-nitrogen or ordinary high-sulfur? Choose carefully.