Multifunctional device capable of achieving aluminum alloy refining gas and impurity removal and mechanical stirring

Abstract

The invention discloses a multifunctional device capable of achieving aluminum alloy refining gas and impurity removal and mechanical stirring. The multifunctional device comprises a pit furnace. A graphite crucible is arranged in the pit furnace. A lifting table is arranged on one side of the pit furnace and provided with a supporting plate, the supporting plate is provided with a stepping motor, and the stepping motor is located above the pit furnace. A rotation shaft of the stepping motor is connected with a rotor, and the rotor is provided with a gas storage chamber, a rotary disc and a bell jar. The rotor is provided with a gas hole to communicate with the gas storage chamber. The rotary disc and the bell jar are internally provided with a plurality of gas holes to communicate with the rotor. The rotary disc is further provided with S-shaped stirring bars. The rotary disc is composed of four symmetric annular blades. The lower end faces of the blades are streamline type hook faces, and screw holes are formed in the upper end faces of the blades. According to the device, equipment can be obviously simplified, the smelting technology is optimized, the production cost is reduced, and the product quality is improved.

Description

technical field [0001] The invention relates to the field of aluminum alloy smelting, in particular to a multifunctional device integrating degassing and impurity removal and mechanical stirring for aluminum alloy refining, which belongs to the innovative technology of aluminum alloy material melting and preparation. Background technique [0002] The basic purpose of alloy smelting is to prepare alloy melt with high purity and meet the requirements of chemical composition, so as to create conditions for casting into ingots of various shapes. The quality of the melt has an important influence on the processing performance and end-use performance of the alloy material. The performance that alloy materials can achieve is not only guaranteed by chemical composition, but also process conditions are extremely important influencing factors. Because whether it is the metal blank supplied by the smelter or the scrap in the furnace, it often contains impurities, gases, oxides or othe...

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Problems solved by technology

However, the traditional refining degassing and mechanical stirring are operated separately, the equipment is complicated, the floor area is large and the cost is expensive; and only a single refining method is often used in smelting, the effect of degassing and impurity removal is limited, even if there is An example of mixed filling of gas and flux, but it cannot guarantee the uniform supply of gas and flux at the same time, and the flux is easy to block in the pipeline, which greatly limits the purification effect of flux and gas; and only one vertical with a larger aperture is set when degassing. The air inlet makes the bubbles distributed unevenly in the aluminum alloy melt, and the residence time is short, which affects the degassing effect; finally, the mechanical stirring adopts the central stirring method, which has little effect on the miniaturization of the bubbles, or is often higher than the liquid level , causing the oxide film on the surface of the melt to be easily damaged, increasing the suction and polluting the aluminum liquid

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