A steelmaking process that smelts metals and other materials using arc heat effects. Three-phase AC arc furnaces for steelmaking are the most common direct heating electric arc furnaces. In the steelmaking process, since there is no flammable gas in the furnace, oxidizing or reducing atmospheres and conditions can be formed according to the process requirements, so it can be used for smelting high-quality non-alloy steel and alloy steel.