Special aluminum alloy material for steel-aluminum composite radiator and preparation method thereof

An aluminum alloy material and composite technology, which is applied in the field of aluminum alloy materials and its preparation, can solve the problems of large differences in aluminum alloy elements, affecting the appearance of finished products, processing, deformation, etc.

Inactive Publication Date: 2017-03-15
ZHEJIANG RONGRONG IND
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] 5. The product is severely deformed due to the rapid cooling of the blank during the mold opening process after die-casting, which seriously affects the appearance of the finished product and subsequent processing
[0010] In terms of production technology and process, t

Method used

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Embodiment Construction

[0026] In order to further understand and recognize the structural features of the present invention and the effect achieved, a detailed description of the preferred embodiment is provided as follows:

[0027] The role and influence of each element in die-casting aluminum alloy are as follows:

[0028] 1. Silicon (Si)

[0029] Silicon is the main element of most die cast aluminum alloys. It can improve the casting properties of the alloy. Silicon and aluminum can form a solid solution. At 577 °C, the solubility of silicon in aluminum is 1.65%, at room temperature is 0.2%, and when the silicon content reaches 11.7%, silicon and aluminum form a eutectic, which improves the high-temperature moldability of the alloy. Reduce shrinkage, no hot cracking tendency, binary aluminum-based alloy has high corrosion resistance, when the content of silicon in the alloy exceeds the eutectic composition, and there are many impurities such as copper and iron, the hard spots of free silicon ap...

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PUM

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Abstract

The invention relates to a special aluminum alloy material for a steel-aluminum composite radiator. The special aluminum alloy material is characterized by comprising, by mass, 12.2 to 13.3% of Si, 2.6 to 2.8% of Cu, 0.4 to 0.5% of Mg, 0.1 to 0.25% of Mn, 0.01 to 0.023% of Sn, 0.03 to 0.05% of Ni, 0.07 to 0.1% of Ti, 0.7 to 1.1% of Zn, 0.8 to 0.95% of Fe, 0.03 to 0.04% of Pb, 0.0025 to 0.003% of Hg, 0.001 to 0.0015% of Cd, 0.015 to 0.023% of rare earth elements (RE) and 0.1 to 0.15% of Zr, with the balance being Al. According to a technical scheme in the invention, the contents of silicon, magnesium, iron and copper in the aluminum alloy are optimized, so aluminum alloy for a deep-cavity thin-wall die casting of the radiator is easy to mold, reduced in the phenomenon of mold sticking and improved in corrosion resistance; and the rare earth elements and elemental zirconium are added into the aluminum alloy, so harmful elements and gases are removed, molten aluminum is purified, and the strength, plasticity and pressure resistance of the aluminum alloy are improved.

Description

technical field [0001] The invention relates to an aluminum alloy material and a preparation method thereof, in particular to a special aluminum alloy material for a steel-aluminum composite radiator and a preparation method thereof. Background technique [0002] Traditional radiators are mostly made of cast iron and steel, which have poor thermal conductivity, heavy weight, large volume, small heat dissipation surface area, and low heat dissipation efficiency. In order to increase heat dissipation, the number of heat dissipation units is often increased by increasing the heat dissipation surface area. , which not only increases the cost, but also increases the volume of the radiator, which leads to an increase in the space for installing the radiator. In addition, the surface of the radiator made of cast iron is rough, the surface treatment is difficult, and the radiator made of steel has many solder joints. The loss is large, the production efficiency is low, the appearanc...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/02C22C1/03
Inventor 田森林
Owner ZHEJIANG RONGRONG IND
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