In general, carburetors are added with scrap steel and other materials, and can also be added in small quantities to the surface of molten iron or in batches. Attention: It is necessary to avoid large-scale oxidation of molten iron, to prevent insignificant carburization effects and damage to castings. When using carburizing agent in casting, the amount of carburizing agent should be selected based on the size and temperature of the furnace. Choose different types of carburizing agents according to the needs for different types of cast iron. There is a large distribution of carburetors in the market, ranging from 75 to 98.5. With the continuous improvement of product quality requirements in the market, there have been fluctuations in the market for carburetors, especially in the selection of graphitized carburetors, which has made an important leap. In this way, there will be relatively more options for choosing graphitized carburetors.