External Refining Agents for Cast Steel

ISO9001 cast-iron molten metal cleaning agents The function of external refining agents is to remove non-metallic inclusions from molten steel, such as oxides, carbides, sulfides, and phosphides.   Ductile iron refining treatment fluxes In fact, even the cleanest molten iron or steel in the furnace can generate secondary slag and absorb large amounts of gas during the tapping process; therefore, secondary refining agents must be used in the ladle outside the furnace. The function of Steel Purifying Agents is to remove gases and inclusions mixed into the molten iron or steel, refine the grain size, homogenize the microstructure, and improve machinability. After the ladle is filled with molten iron or steel, the floating slag is skimmed off, a slag-removing agent is sprinkled on top, and the mixture is held at temperature for 2 minutes before pouring begins. Sometimes, you may feel that you have skimmed the slag from the surface of the molten steel many times. However, the castings stil…