The difference between induction melting furnace and electric arc furnace, which steelmaking is better? Pros and cons? …

1. Features in terms of refining ability

Electric arc furnaces are better than induction melting furnaces in terms of removal of phosphorus, sulfur and oxygen.

2. High recovery rate of smelted alloy elements

The yield of alloying elements smelted by induction melting furnace is higher than that of electric arc furnace. The volatilization and oxidation loss of elements are large under the high temperature of the arc. The burning loss rate of alloy elements during smelting in induction melting furnace is lower than that of electric arc furnace. In particular, the burning loss rate of alloy elements in the return material loaded with the furnace is much higher than that of the induction melting furnace. In the induction melting furnace smelting, it can effectively recover the alloying elements in the return material. During electric arc furnace smelting, the alloying elements in the return material are first oxidized into the slag, and then reduced from the slag to the molten steel, and the burning loss rate is significantly increased. The alloy element recovery rate of induction melting furnace is significantly higher than that of electric arc furnace when returning material is smelted.

3. Low carbon increase in molten steel during smelting

The induction melting furnace relies on the principle of induction heating to melt the metal charge without the carbon increase of the molten steel. The electric arc furnace relies on graphite electrodes to heat the charge through the electric arc. After melting, the molten steel will increase carbon. Under normal conditions, when smelting high-alloy nickel-chromium steel, the minimum carbon content in electric arc furnace smelting is 0.06%, and in induction melting furnace smelting, it can reach 0.020%. The carbon increase in the electric arc furnace smelting process is 0.020%, and that of the induction melting furnace is 0.010%.

4. Electromagnetic stirring of molten steel improves the thermodynamic and dynamic conditions of the steelmaking process  The movement conditions of the molten steel in the induction melting furnace are better than those of the electric arc furnace. The electric arc furnace must be equipped with a low-frequency electromagnetic stirrer for this purpose, and its effect is still not as good as an induction melting furnace.

5. The process parameters of the smelting process are easy to control. The temperature, refining time, stirring intensity and constant temperature of the induction melting furnace during smelting are all more convenient than electric arc furnaces and can be carried out at any time. Due to the above-mentioned characteristics of the induction melting furnace, it occupies a relatively important position in the smelting of high-alloy steels and alloys.