High-performance trapezoidal aluminum alloy material and production method thereof
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A technology of aluminum alloy materials and production methods, which is applied in the direction of metal processing equipment, mechanical cleaning, manufacturing tools, etc., can solve the problems of reducing the strength and service life of the hub, uneven composition and performance, and coarse grains of finished products. Uniform and delicate, less impurities, uniform composition effect
Active Publication Date: 2020-07-28
河南中孚技术中心有限公司
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Problems solved by technology
[0004] At present, the cast aluminum alloy products used in the wheel hub industry have defects such as many pinholes, uneven composition and performance, and internal looseness. The unstable quality cannot meet the qualified industry standards, resulting in coarse grains, pinholes, and many impurities in the finished product. Defects, which greatly reduce the strength and service life of the hub
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Embodiment 1
[0047] Example 1: A high-performance trapezoidal aluminum alloy material, its composition by weight percentage is: silicon Si 7.4%, iron Fe≤0.12%, copper Cu 0.42, magnesium Mg 0.4%, titanium Ti 0.1%, total impurity content < 0.02%, the balance is aluminum.
[0048] The production method of above-mentioned high-performance trapezoidal aluminum alloy material, its steps are as follows:
[0049]A. First add the cold material of the same composition, the addition amount is 15-20% of the furnace capacity, and then add the electrolytic aluminum liquid ingredients, Fe≤0.07% and Si≤0.04% in the electrolytic aluminum liquid, turn on the electromagnetic stirring and heat up at the same time, let the cold material melt To achieve a mixed melt with uniform composition;
[0050] B. When the temperature reaches above 750°C, sprinkle a certain amount of slagging agent, turn on the electromagnetic stirring for 30 to 40 minutes, and then perform slag removal on the surface of the aluminum liq...
Embodiment 2
[0070] Embodiment 2: The production method of this embodiment is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is: a high-performance trapezoidal aluminum alloy material, and its composition is by weight percentage: silicon Si 7.5% , iron Fe ≤0.12%, copper Cu 0.46, magnesium Mg 0.45%, titanium Ti 0.15%, total impurity content <0.02%, and the balance is aluminum.
Embodiment 3
[0071] Embodiment 3: The production method of this embodiment is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is: a high-performance trapezoidal aluminum alloy material, and its composition is by weight percentage: silicon Si 7.4~ 7.5%, iron Fe ≤0.12%, copper Cu 0.42-0.46, magnesium Mg 0.4-0.45%, titanium Ti 0.1-0.15%, total impurity content <0.02%, and the balance is aluminum.
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Abstract
The invention discloses a high-performance trapezoidal aluminum alloy material, which comprises the following components in percentage by weight: 7.4% to 7.5% of Si, not more than 0.12% of F3, 0.42% to 0.46% of Cu, 0.4% to 0.45% of Mg, 0.1% to 0.15% of Ti, less than 0.02% of total content of impurities and the balance of aluminum. The production method comprises the following steps of adding a cold material with the same component and a proportion of 15% to 20% of the capacity of a smelting furnace, adding electrolytic aluminum liquid materials, realizing component uniformity of aluminum liquid through electromagnetic stirring treatment, adding the alloy materials in sequence, obtaining a pure aluminum solution through refining, degasification box and filter box steps, achieving horizontalcasting through balance regulation, enabling the regulating amount of the aluminum liquid to be matched with the rotating speed of a casting machine, reasonably distributing a cooling mode, cooling water flow and pressure, forming an optimal state from liquid to crystallization in a cooling area of a crystallizer, and ensuring the grain size of the trapezoidal aluminum alloy. The high-performancetrapezoidal aluminum alloy material has the advantages of uniform product component, high strength, fine grain size, level 1 pinhole degree, low hydrogen content and few impurities, and the mechanical properties of an alloy product are comprehensively improved.
Description
[0001] 1. Technical field: [0002] The invention relates to a composition of a high-performance trapezoidal aluminum alloy material and a production method thereof, which are widely used in the production of materials for automobile hubs, through refining, degassing, filtering, horizontal casting and Candinius-Propez The advanced cooling process of the casting unit can effectively improve the strength and performance stability of the product, so that the product has the advantages of bright surface, fine grain size, first-class pinhole degree, and low hydrogen content. [0003] 2. Background technology: [0004] At present, the cast aluminum alloy products used in the wheel hub industry have defects such as many pinholes, uneven composition and performance, and internal looseness. The unstable quality cannot meet the qualified industry standards, resulting in coarse grains, pinholes, and many impurities in the finished product. Defects greatly reduce the strength and service l...
Claims
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Application Information
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