What is the role of electromagnetic stirring, and what are the advantages of vacuum induction furnace smelting?

What does electromagnetic stirring do?

① It can accelerate the physical and chemical reaction speed in the smelting process;

② Make the molten metal liquid composition uniform;

③ The temperature of the metal liquid in the crucible tends to be uniform, which leads to the complete completion of the reaction during smelting;

④ The result of the stirring overcomes the effect of its own static pressure, turning the melted bubbles in the depth of the crucible to the liquid surface, which facilitates gas discharge and reduces the gas inclusion content of the alloy.

⑤ Vigorous stirring enhances the mechanical erosion of the crucible by the metal liquid, which affects the life of the crucible;

⑥ Accelerate the decomposition of crucible refractory at high temperature, which constitutes re-contamination of molten alloy.

What are the advantages of vacuum induction furnace smelting?

① There is no air and slag pollution, the smelted alloy is pure and the performance level is high;

② Smelting under vacuum creates good degassing conditions, and the gas content of the steel and alloy smelted is low;

③ Under vacuum conditions, the metal is not easy to be oxidized;

④ Impurities (Pb, Bi, etc.) brought in by raw materials can be partially volatile under vacuum, so that the material can be purified;

⑤ When smelting in a vacuum induction furnace, carbon can be used for deoxidation. The deoxidation product is a gas and the purity of the alloy is high;

⑥ can accurately adjust and control chemical composition;

Return material can be used.