Carburizing agent there are many kinds of raw materials, production processes are different, there are wooden carbon carbon, coal, coke, graphite, in which all kinds of classification, there are many small species.

High quality carburizing agent generally refers to the graphite carbon, under the condition of high temperature, carbon atoms arranged in graphite morphology, so called graphite. Graphite can reduce the content of impurity in recarburizer, increasing carbon content of carburizing agent, reducing sulfur content. Carbon in cast use, can greatly increase the amount of scrap, reduce the amount of pig iron or no iron.