According to the properties of crucible materials, the smelting methods of induction melting furnace can be divided into two types: alkaline crucible smelting method and acid crucible smelting method.

The basic crucible smelting method can be divided into melting method and oxidation method. Acid crucible smelting method is limited to melting method. Because of the low refractoriness of the crucible material, the oxidation smelting can not be carried out.

Alkaline crucible smelting is the most widely used smelting method. It can be used for smelting low-alloy steel, stainless steel, heat-resistant steel, tool and die steel, electrothermal alloy, corrosion-resistant alloy, superalloy, etc.

The application of acid crucible smelting method is limited to smelting high manganese steel, chromium manganese nitrogen heat resistant steel, high speed tool steel, high carbon abrasive steel, heat resistant steel, etc. The smelting steel must have high silicon content and free of Al, Ti, B, Zr and other oxidizable elements.

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