Bottom-blowing induction melting furnace and auxiliary refining method in the furnace

Bottom-blowing induction melting furnace, which consists of furnace lining, breathable bricks, cover plates, upper frame bricks, induction coils, insulating fibers and shells; the furnace body is composed of a gas source connector, a gas regulator, a flow meter, and a gas transmission connected in series. The hose, the metal bellows, the gas transmission joint, the pressure gauge and the regulating valve constitute the gas supply system. The gas supply system is connected with the gas pipe joint through the metal bellows to supply gas to the furnace body. The invention also discloses an auxiliary refining method in a bottom-blowing induction melting furnace. The method is implemented after all induction melting furnaces used for special steel, alloy steel, and metal smelting are melted. The specific method is as follows: Inert gas; adjust the regulating valve according to the working conditions, the pressure of the inert gas delivered to the ventilating brick is 0.1~1.1MPa, the flow rate is 100~700 1/s; the auxiliary refining time in the furnace is 3-5min. It is suitable for intermediate frequency smelting applications with a capacity of less than 250kg. The furnace has a simple structure, good air permeability, uniform foam formation, and the auxiliary refining process in the furnace has good operability and good effect.

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