Energy-saving vacuum double cavity holding furnace

Abstract

An energy-saving vacuum double cavity holding furnace comprises a vacuum furnace shell mechanism, a heating mechanism and a degassing crucible mechanism, wherein the vacuum furnace shell mechanism is provided with a furnace shell, an inner shell, reinforcing ribs, a furnace cover, a sand injecting opening and a furnace bottom, wherein a vacuum cavity is formed between the inner shell and the furnace shell, the heating mechanism is provided with an electric heating wire, a power distribution box, magnesia and a thermocoupler, and the degassing crucible mechanism is provided with a crucible, a degassing brick, a gas inlet tube and a degassing control valve. The temperature of the heating mechanism and the temperature of the degassing crucible mechanism are preserved through a vacuum furnace sleeve, the thermal insulating effect is improved, heat of the crucible is directly conducted through the magnesia filled into the periphery of the electric heating wire, the working temperature on the surface of the electric heating wire is lowered, the temperature difference between the electric heating wire and the crucible is balanced, and the service life of the electric heating wire is prolonged. The carbon fiber reinforcing ribs arranged in the crucible are adopted to effectively prevent fracture of the crucible; the degassing brick arranged on the bottom of the crucible is adopted to replace the rotor degassing procedure, the degassing effect and the degassing efficiency are improved, and energy and cost are saved.

Description

technical field [0001] The invention relates to the field of aluminum alloy casting, in particular to an energy-saving vacuum double-chamber holding furnace. Background technique [0002] In the process of casting aluminum alloy products, in order to ensure continuous production, each production line is equipped with two well-type heat preservation furnaces to heat and heat the molten aluminum and use them in turn. The effect is not ideal. Not only does it increase and deteriorate the environment of the work area, but also needs to use air conditioners to cool down in summer, which consumes a lot of energy; the current electric heating wire and the crucible rely on air conduction, which not only has a large temperature difference between the two, but also shortens the life of the electric heating wire. , the control accuracy is also poor; the graphite ceramic crucible used is not only costly, but also easy to crack and has a short life; the refining degassing must use the ro...

AI Technical Summary

Problems solved by technology

[0002] In the process of casting aluminum alloy products, in order to ensure continuous production, each production line is equipped with two well-type heat preservation furnaces to heat and heat the molten aluminum and use them in turn. The effect is not ideal. Not only does it increase and deteriorate the environment of the work area, but also needs to use air conditioners to cool down in summer, which consumes a lot of energy; the current electric heating wire and the crucible rely on air conduction, which not only has a large temperature difference between the two, but also shortens the life of the electric heating wire. , the control accuracy is also poor; the graphite ceramic crucible used is not only costly, but also easy to crack and has a short life; the refining degassing must use the rotor degasser, which increases the consumables and cost; the use of immersion electric heaters or surface heating devices The high-quality holding furnace not only has less functions but high investment, but also high cost of use

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