The use of carburizer in casting can greatly increase the amount of scrap steel, reduce the amount of pig iron, or use no pig iron. The feeding method of furnace smelting should be put into the furnace with waste steel and other materials, and the small dosage can be added to the surface of the molten iron. However, it is important to avoid large quantities of iron and water in order to prevent excessive oxidative effects and insufficient carbon content of me for more information by