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Extinction golden electrophoresis aluminium alloy and preparation method thereof

A technology of aluminum alloy and aluminum-manganese alloy, applied in the direction of electrophoretic plating, electrolytic coating, coating, etc., can solve the problems of poor surface properties such as corrosion resistance and weather resistance, and cannot solve the problems of intergranular corrosion and denudation behavior of aluminum alloy , to achieve the effect of strong corrosion resistance, excellent corrosion resistance and grain refinement

Inactive Publication Date: 2020-10-30
佛山金兰铝厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention proposes a matte golden electrophoretic aluminum alloy and its preparation method to solve the problem that the surface treatment of aluminum alloy in the prior art cannot solve the intergranular corrosion and exfoliation behavior of aluminum alloy, and the surface properties such as corrosion resistance and weather resistance are poor. question

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  • Extinction golden electrophoresis aluminium alloy and preparation method thereof
  • Extinction golden electrophoresis aluminium alloy and preparation method thereof
  • Extinction golden electrophoresis aluminium alloy and preparation method thereof

Examples

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Embodiment 1

[0048] This example is used to illustrate a kind of matte golden electrophoresis aluminum alloy. It is prepared from raw materials, and the rare earth element is obtained by mixing cerium, praseodymium, and neodymium according to the ratio of 1:1:1; the corrosion fatigue life of the prepared aluminum alloy is increased by 75%, and in terms of mass percentage, the extinction The chemical composition of golden electrophoretic aluminum alloy is: Bi: 0.01%, Fe: 0.30%, Cu:: 0.14%, Mg: 0.5%, Sn: 0.01%, Mn: 0.01%, Zn: 0.03%, Ce: 0.001%, Pr: 0.001%, Nd: 0.001%, the balance is Al and unavoidable impurities, and the weight percentage of each impurity is not more than 0.05%.

[0049] This embodiment also provides a method for preparing the matte gold electrophoretic aluminum alloy, the method comprising the following steps:

[0050] S1. Add the aluminum ingots, bismuth ingots, pure copper, tin ingots, aluminum-manganese alloys, aluminum-iron alloys, and magnesium ingots into the melting...

Embodiment 2

[0055] This example is used to illustrate a kind of matte golden electrophoresis aluminum alloy. It is prepared from raw materials, and the rare earth element is obtained by mixing cerium, praseodymium, and neodymium according to the ratio of 3:1:7; the corrosion fatigue life of the prepared aluminum alloy is increased by 77%, and the extinction The chemical composition of golden electrophoretic aluminum alloy is: Bi: 0.20%, Fe: 0.30%, Cu:: 0.14%, Mg: 1.5%, Sn: 0.05%, Mn: 0.06%, Zn: 0.03%, Ce: 0.003%, Pr: 0.001%, Nd: 0.007%, the balance is Al and unavoidable impurities, and the weight percentage of each impurity is not more than 0.05%.

[0056] This embodiment also provides a method for preparing the matte gold electrophoretic aluminum alloy, the method comprising the following steps:

[0057] S1. Add the aluminum ingots, bismuth ingots, pure copper, tin ingots, aluminum-manganese alloys, aluminum-iron alloys, and magnesium ingots into the melting furnace in sequence, heat an...

Embodiment 3

[0062] This example is used to illustrate a kind of matte golden electrophoresis aluminum alloy. It is prepared from raw materials, and the rare earth element is obtained by mixing cerium, praseodymium, and neodymium according to the ratio of 2:1:4; the corrosion fatigue life of the prepared aluminum alloy is increased by 75%, and the extinction The chemical composition of golden electrophoretic aluminum alloy is: Bi: 0.05%, Fe: 0.25%, Cu:: 0.11%, Mg: 1.1%, Sn: 0.03%, Mn: 0.03%, Zn: 0.02%, Ce: 0.002%, Pr: 0.001%, Nd: 0.004%, the balance is Al and unavoidable impurities, and the weight percentage of each impurity is not more than 0.05%.

[0063] This embodiment also provides a method for preparing the matte gold electrophoretic aluminum alloy, the method comprising the following steps:

[0064] S1. Add the aluminum ingots, bismuth ingots, pure copper, tin ingots, aluminum-manganese alloys, aluminum-iron alloys, and magnesium ingots into the melting furnace in sequence, heat an...

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Abstract

The invention provides extinction golden electrophoresis aluminium alloy and a preparation method thereof. Zn element is added to ensure hardness and strength of aluminium alloy, and at the same time,rare earth elements are added to solve the problem that the corrosion resistance is reduced due to addition of Zn element; in addition, a few kinds of rare earth elements form a compounded system toact with the Zn element for synergistic interaction, so that the strength of aluminium alloy is effectively further improved, aluminium alloy is enabled to have remarkable corrosion resistance, an aluminium alloy plate is ensured to have uniform, stable and refined grains, following surface treatment effect is favorably improved, subgrain destruction boundary distribution is reduced during the surface treatment process, the corrosion fatigue resistance of aluminium alloy is improved, the corrosion fatigue life is prolonged by more than 75%, the best extinction golden aluminium alloy can be obtained, and the problems in the prior art that the aluminium alloy surface treatment cannot solve intercrystalline corrosion and denudation behaviors of aluminium alloy and the corrosion resistance, weather fastness and other surface performance are poor are solved on the whole.

Description

technical field [0001] The invention relates to the surface treatment of aluminum alloys, in particular to a matting golden electrophoretic aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy has the advantages of low density, high specific strength, and good processing performance, and is widely used. However, in reality, aluminum alloys are inevitably exposed to corrosive environments during the use process, such as salt spray, moisture, and local condensation. , under the combined action of corrosive media and loads, aluminum alloys are prone to corrosion damage such as intergranular corrosion, exfoliation, stress corrosion, and corrosion fatigue, making them less safe to use. Adding Zn content to aluminum alloys will increase the corrosion resistance of aluminum alloys. The use of strength, but it will lead to a decrease in the corrosion resistance of the aluminum alloy, and the difference in aging will lead to a large difference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/03C22F1/047C25D13/20
CPCC22C1/026C22C1/03C22C21/06C22F1/047C25D13/20
Inventor 黄荣清何炳智
Owner 佛山金兰铝厂有限公司
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