What are the characteristics of the melting period of the metal charge of the induction melting furnace?

① The metal charge of the induction melting furnace gradually melts, and the molten steel is gradually formed. The relative surface area of the molten steel is large, and the molten pool is relatively shallow, which is very conducive to degassing and removal of non-metallic inclusions. The removed inclusions account for 70% of the total inclusions. above;

② Most gases can be removed during the melting period. Hydrogen can remove 70-80%, nitrogen can remove 60-70%, and oxygen can remove 30-40%;

③ The metal charge emits a large amount of gas during the heating and melting process, which reduces the vacuum degree;

④ In the melting process of the metal charge, the temperature of the metal material around the crucible wall is the highest (especially the middle and lower part), and is the first to melt. Due to the combined effect of eddy current heat, radiant heat, and conduction heat, the entire metal charge gradually sinks automatically, and the molten steel The temperature is stable.