Introduction to vacuum arc furnace
It is an electric furnace in which a molten metal is directly heated by an electric arc in a vacuumed furnace body. The gas in the furnace is thin, and the arc is mainly caused by the vapor of the molten metal. In order to stabilize the arc, DC is generally supplied. According to the characteristics of smelting, it is divided into metal remelting furnace and casting furnace. According to whether the electrodes are consumed (melted) during the smelting process, they are divided into self-consumption furnaces and non-consumer furnaces. Most of the industrial applications are self-consumption furnaces. Vacuum arc furnaces are used to smelt special steel, reactive and refractory metals such as titanium, molybdenum and niobium.