Technological process of producing aluminum alloy through electrolytic aluminum liquid

Abstract

The invention relates to a technological process of an aluminum alloy, and in particular relates to a technological process of producing an aluminum alloy through electrolytic aluminum liquid. The technological process comprises the following steps of: pouring electrolytic aluminum liquid into a smelting furnace; adding an aluminum ingot to lower the temperature; performing on-the-spot sample analysis on ingredients; adjusting the temperature; adding other components; electromagnetically agitating; refining at the first time; removing dross on the surface of the aluminum liquid; transferring into a converter; refining at the second time; removing the dross on the surface of the aluminum liquid; performing the on-the-spot sample analysis on the ingredients; standing after the ingredients are qualified; purifying; performing grain refining; filtering through a ceramic filtering plate; carrying out hot-top casting in a water cooling manner; inspecting; cutting the qualified product by a saw; homogenizing; and then packaging and warehousing. The technological process has the beneficial effects that the ingredients are controlled, and all technological steps are coordinated, so that the problem of low quality of aluminum alloy caused by directly producing by electrolytic aluminum liquid can be solved, and an aluminum alloy production process bringing low cost and little pollution is brought; the produced aluminum alloy is higher in quality; the labor force is saved; the technological process can be reduced; the development of the nowadays society and enterprise is met highly.

Description

technical field [0001] The invention relates to an aluminum alloy process flow, more specifically a process flow for producing aluminum alloy by electrolytic aluminum liquid. Background technique [0002] Aluminum alloy is a general term for aluminum-based alloys. The main alloying elements are copper, silicon, magnesium, zinc, manganese, and the secondary alloying elements are nickel, iron, titanium, chromium, lithium, etc. Aluminum alloy has low density, but relatively high strength, which is close to or exceeds high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel. . With the rapid development of science and technology and industrial economy in recent years, the demand for aluminum alloy welded structural parts is increasing, and the research on the weldability of aluminum alloys is...

AI Technical Summary

Problems solved by technology

[0005] The traditional aluminum alloy preparation generally adopts the aluminum ingot remelting method. The process method consumes a lot of energy during the smelting process, the metal burns a lot, and at the same time causes serious pollution to the environment. Therefore, a method that can directly use electrolytic aluminum liquid to produce The process of aluminum alloy, while the production process of electrolytic aluminum mainly uses cryolite-alumina as electrolyte and carbon material as electrode. The electrolyte problem is generally between 950-970 ° C, so the problem of electrolytic aluminum liquid also has a higher temperature. However, the refining temperature of molten aluminum only needs to be 700-800°C. If the temperature is not suitable and there are few spontaneous crystal nuclei, it is easy to cause structural defects such as coarse grains during casting. The oxidation of aluminum leads to more oxidation inclusions in the electrolytic aluminum liquid, and due to the high temperature, the hydrogen has a high saturation content in the aluminum liquid, so there is a large amount of hydrogen in the electrolytic aluminum liquid, and at the same time, the Fe in the electrolytic aluminum liquid The content of Si and Si is also relatively large, which has a serious impact on the quality of subsequent processed products. Therefore, a process flow that can directly use electrolytic aluminum liquid to produce aluminum alloy is needed.

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