Environment friendly low-gas-content aluminum alloy ingot and production method thereof

Abstract

The invention discloses an environment friendly low-gas-content aluminum alloy ingot which comprises the following components in percentage by weight: 1.6-3.3 percent of Cu, 9.8-11.8 percent of Si, 0-0.29 percent of Mg, 0-0.08 percent of Zn, 0-0.8 percent of Fe, 0-0.48 percent of Mn, 0-0.48 percent of Ni, 0-0.1 percent of Ti, 0-0.1 percent of Pb, 0-0.2 percent of Sn, 0-0.25 percent of other trace elements and the balance of aluminum. Meanwhile, the invention also discloses a production method of the environment friendly low-gas-content aluminum alloy ingot. The environment friendly low-gas-content aluminum alloy ingot has the advantages of low gas and dreg content, high aluminum liquid cleanness and good mechanical and machining properties. The production method has the advantages of low production cost and high efficiency and effectively solves the pollution problem of the secondary aluminum industry.

Description

technical field [0001] The invention relates to an aluminum alloy ingot and a production method thereof, in particular to an environment-friendly aluminum alloy ingot with low gas content and a production method thereof. Background technique [0002] At present, the aluminum-silicon alloys on the market have high content of impurities and harmful substances, high gas content, poor raw material sorting ability, high energy consumption, serious pollution and low efficiency. [0003] At present, the production method of aluminum alloy in the market generally uses pure aluminum ingot as the base, adds the required alloy elements according to the requirements of the composition ratio, and melts the aluminum alloy ingot of the required brand, but the cost of this preparation method is very high; another preparation method It is prepared by using waste aluminum materials, using recycled waste aluminum parts or scraps and waste aluminum wires in the process of producing aluminum pro...

AI Technical Summary

Problems solved by technology

[0002] At present, the aluminum-silicon alloys on the market have high content of impurities and harmful substances, high gas content, poor sorting ability of raw materials, high energy consumption, serious pollution and low efficiency.

[0003] At present, the production method of aluminum alloy in the market generally uses pure aluminum ingot as the base, adds the required alloy elements according to the requirements of the composition ratio, and melts the aluminum alloy ingot of the required brand, but the cost of this preparation method is very high; another preparation method It is prepared by using waste aluminum materials, using recycled waste aluminum parts or scraps and waste aluminum wires in the process of producing aluminum products as the main raw materials, and is smelted to produce recycled aluminum ingots that meet the standard requirements. The following problems exist in the process of aluminum alloy ingots:

[0009] At present, the high-temperature smelting method is generally adopted in the industry, and the temperature is controlled at about 850°C during the smelting process. This kind of smelting causes a lot of burning loss of raw materials and consumes a lot of energy; iron rakes are generally used for stirring during the smelting process. Increasing the iron content of the aluminum melt will increase the gas and slag content of the melt at the same time; the refining process is immature, and the refining agent is generally sprinkled directly into the furnace, and the degassing and impurity removal effects are not good

[0010] The method of preparing aluminum alloys from waste aluminum materials and the technical difficulties faced are summarized above. When using waste aluminum materials to prepare aluminum alloys, the main technical difficulties faced are: sorting quality and efficiency of waste aluminum materials, Burning loss control and efficiency of smelting, gas content control of melt and environmental pollution control, etc. Due to the above technical difficulties, problems such as low production efficiency, high cost, high gas content and serious environmental pollution will be encountered in production