Aluminum alloy ingot for high-zinc car and production method thereof

Abstract

The invention discloses an aluminum alloy ingot for a high-zinc car and a production method thereof. The aluminum alloy ingot comprises the following components by weight percent: 1.5% to 4.0% of Cu, 10.5% to 12.0% of Si, 0.05 to 0.35% of Mg, 0% to 2.5% of Zn, 0% to 1.1% of Fe, 0% to 0.5% of Mn, 0% to 0.5% of Ni, 0% to 0.2% to Sn, 0% to 0.25% of other trace elements and the balance of Al. The gas-containing and slag-containing quantity of the aluminum alloy ingot is far below the industry level. The aluminum alloy ingot is homogeneous in alloy components, accurate to control, high in zinc content proportion and high in alloy intensity. The production method has the advantages of being low in cost as well as stable and controllable in production quality, and cannot generate pollution.

Description

technical field [0001] The invention relates to an aluminum alloy ingot and a production method thereof, in particular to a high-zinc aluminum alloy ingot for vehicles and a production method thereof. Background technique [0002] At present, there are generally two production methods for high-zinc aluminum alloy ingots for vehicles on the market: one is to use pure aluminum ingots as the base, add the required alloying elements according to the composition ratio requirements, and smelt the aluminum alloy ingots of the required grades; However, the cost of this preparation method is very high; the second is that the main raw materials used are waste aluminum materials, including recycled waste aluminum parts, scraps and waste aluminum wires in the process of producing aluminum products, etc., and then produced through smelting and preparation to meet the standard requirements recycled aluminum ingots, this production method has the following problems: [0003] 1) The sourc...

AI Technical Summary

Problems solved by technology

[0002] At present, there are generally two production methods for high-zinc aluminum alloy ingots for vehicles on the market: one is to use pure aluminum ingots as the base, add the required alloying elements according to the composition ratio requirements, and smelt the aluminum alloy ingots of the required grades; However, the cost of this preparation method is very high; the second is that the main raw materials used are scrap aluminum materials, including recycled scrap aluminum parts, scraps and scrap aluminum wires in the process of producing aluminum products, etc. recycled aluminum ingots, this production method has the following problems:

[0008] At present, the high-temperature smelting method is generally used in the industry, and the temperature is controlled at about 800°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, which increases the melt temperature. At the same time, it will increase the iron content of the melt. It is difficult to homogenize the alloy composition of the whole furnace melt through manual stirring, and the stability and accuracy of the aluminum ingot composition cannot be guaranteed; the refining process is immature, Generally, the refining agent is sprinkled directly into the furnace, and the effect of degassing and impurity removal is not good.

At the same time, the pollution control in the production process is not good, which seriously affects the environmental quality

[0009] To sum up, when using scrap aluminum to prepare high-zinc aluminum alloy ingots for vehicles, the technical problems faced are: the pretreatment quality of scrap aluminum, the accurate division of scrap aluminum, the energy consumption and burning loss of the smelting process Due to the above technical problems, there are high costs in production, components exceeding the standard or large segregation, high gas and slag content, unstable performance, and environmental problems. serious pollution problems