Suspension smelting furnace for continuously producing cast ingots

Abstract

The invention discloses a suspension smelting furnace for continuously producing cast ingots. The furnace comprises a smelted finished product bin, a feeder and a smelting chamber, a finished product bin door and a first deflation valve are arranged at one end of the finished product bin, the other end of the finished product bin is connected with a vacuum pump set, the smelting chamber is connected with the finished product bin, the feeder and the vacuum pump set, the smelting chamber is provided with a smelting chamber door, the feeder is provided with a feeder cover and a second deflation valve, the other end of the feeder is connected to a vacuum pump group, a rotating shaft is installed in the smelting chamber, a motor is installed outside the smelting chamber so that the rotating shaft can drive a crucible to rotate by 180 degrees, a first electric cylinder and a second electric cylinder are arranged in the smelting chamber, the first electric cylinder and the second electric cylinder are located on the two sides of the rotating shaft, U-shaped clamps are located between the first electric cylinder and the second electric cylinder, a split type crucible is installed between the U-shaped clamps, the split type crucible is fixed to the middle of the rotating shaft, a third electric cylinder is installed at the bottom of the smelting chamber, and the third electric cylinder is connected with a conical supporting head. By means of the design, continuous production of the cast ingots cooled along with the crucible can be achieved, and production efficiency is improved.

Description

technical field [0001] The invention relates to a suspension smelting furnace, in particular to a suspension smelting furnace for continuous production of ingots. Background technique [0002] Suspension smelting equipment refers to placing a water-cooled oxygen-free copper crucible with slits in a high-frequency exchange magnetic field under vacuum or filling with protective gas, and using electromagnetic force to keep the molten metal and the crucible wall in a non-contact state for smelting. It can greatly reduce the pollution of the crucible to the smelted metal and improve the purity of the metal. The magnetic field generated by the high-frequency current passing through the crucible slit will be transmitted to the heated material, and the induced current generated by the material will heat itself, and at the same time, the heated charge and the magnetic field interact to generate a thrust from the surface of the material to the center, which prevents The charge is in ...

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Problems solved by technology

The magnetic field generated by the high-frequency current passing through the crucible slit will be transmitted to the heated material, and the induced current generated by the material will heat itself, and at the same time, the heated charge and the magnetic field interact to generate a thrust from the surface of the material to the center, which prevents The charge is in contact with the crucible wall. At present, vacuum suspension melting equipment has the advantages of being able to produce high-quality metals or alloys with high purity, high melting point, fear of oxidation, pollution, and difficult uniform composition, and is widely used. The disadvantage is that the capacity is difficult to increase. The larger the capacity, the higher the heat dissipation requirements of the crucible, so the melting of ultra-high melting point metals can only be carried out in a crucible with a small capacity. After the crucible cools down, it will form an ingot for direct processing or use other types of melting furnaces for casting. processing

After the ingot smelting in the existing suspension melting furnace is completed, the alloy needs to stay in the vacuum chamber for a certain period of time to cool the alloy to prevent the alloy from being oxidized at high temperature. When taking the material, it is necessary to break the vacuum to take the material, and then the next batch of material needs to be vacuumized again Melting, long production cycle, resulting in low production efficiency

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