Production line equipment and process for preparing high-purity magnesium alloy through continuous vacuum smelting

Abstract

Production line equipment for preparing a high-purity magnesium alloy through continuous vacuum smelting comprises a vacuumizing assembly, a control mechanism, a heating volatilization furnace, a magnesium steam filter device, a cooling crystallizer, a vacuum receiver, a crystal melting furnace, an alloy melting furnace and an alloy forming device, wherein the control mechanism, the heating volatilization furnace, the magnesium steam filter device, the cooling crystallizer, the vacuum receiver, the crystal melting furnace, the alloy melting furnace and the alloy forming device are connected with the vacuumizing assembly. The vacuumizing assembly can carry out vacuumizing treatment on the interiors of the heating volatilization furnace, the magnesium steam filter device, the cooling crystallizer, the vacuum receiver, the crystal melting furnace, the alloy melting furnace and the alloy forming device under control of the control mechanism. Through the improvement of the structures of thecooling crystallizer, the vacuum receiver, the crystal melting furnace and the alloy melting furnace in the magnesium alloy production line equipment, the equipment can rapidly, efficiently, safely and automatically complete production of the ultrahigh-purity magnesium alloy under the conditions of whole-process vacuum and inert gas shielding so as to prepare the high-purity magnesium alloy withhigh quality and mass.

Description

technical field [0001] The invention relates to the technical field of industrial magnesium alloy preparation devices, in particular to a production line equipment and process for preparing high-purity magnesium alloys by continuous vacuum smelting. Background technique [0002] Magnesium alloy is a high-performance light-weight structural material made of magnesium. Its specific gravity is similar to that of plastic, and its rigidity and strength are no less than that of aluminum. It has strong shock resistance, anti-electromagnetic, thermal conductivity, and electrical conductivity. Magnesium alloy is light in weight, its density is only 1.7 kg / m3, which is 2 / 3 of aluminum and 1 / 4 of steel, its strength is higher than that of aluminum alloy and steel, and its specific stiffness is close to that of aluminum alloy and steel. Excellent castability and dimensional stability, easy processing, low scrap rate, good damping coefficient, greater than aluminum alloy and cast iron, v...

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Problems solved by technology

[0005] In the process of producing magnesium alloys in the prior art, there are mainly the following significant defects: 1. The containers used to smelt metal magnesium or magnesium alloys mainly include low-carbon steel crucibles and stainless steel containers, regardless of low-carbon steel crucibles or stainless steel containers Its own corrosion resistance is poor at high temperature, and impurities in the container are easy to contaminate magnesium and magnesium alloys; Commonly used metals such as magnesium, metallic iron, and metallic aluminum all have active chemical properties and are easily oxidized by air. During smelting, in order to prevent the oxidation of metal raw materials, it is usually necessary to add a covering agent to the upper part of the furnace body, but the oxygen barrier covering The addition of additives will cause secondary pollution to the magnesium alloy in the furnace body, affecting the purity and quality of its finished product; 3. The existing smelting equipment has low smelting efficiency, and cannot be automated and continuous production, resulting in a longer cycle time for the preparation of magnesium alloy finished products. long, and the equipment is usually large in size, and its safety cannot be guaranteed

4. For some magnesium alloys manufactured under vacuum conditions, the manufacturing process is intermittent operation, which cannot be continuously and automatically produced, and the process is complex, with many impurities mixed in the process, and the equipment consumes high energy and the output is low.

5. The traditional magnesium alloy manufacturing process cannot effectively solve the problem of secondary pollution, causing my country's high-purity magnesium gold industry to lag far behind developed countries. According to relevant reports, 75% of domestic high-grade magnesium alloys still rely on imports

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