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A kind of extinction golden electrophoretic aluminum alloy and preparation method thereof

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

Inactive Publication Date: 2021-09-07
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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  • A kind of extinction golden electrophoretic aluminum alloy and preparation method thereof
  • A kind of extinction golden electrophoretic aluminum alloy and preparation method thereof
  • A kind of extinction golden electrophoretic aluminum 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 present invention provides a matte golden electrophoretic aluminum alloy and a preparation method thereof. While ensuring the hardness and strength of the aluminum alloy by adding Zn elements, rare earth elements are also added to solve the problem of reduced corrosion resistance caused by the addition of Zn elements; in addition, Several rare earth elements form a compound system and interact with Zn elements to synergize, effectively further increase the strength of aluminum alloy, and make aluminum alloy have significant corrosion resistance, ensuring that the aluminum alloy plate has a uniform, stable, and refined Grains help to improve the effect of subsequent surface treatment, reduce the distribution of sub-grain damage to grain boundaries during surface treatment, improve the corrosion fatigue resistance of aluminum alloys, and increase the corrosion fatigue life by more than 75%. The matting golden aluminum alloy generally solves the problem that the surface treatment of the aluminum alloy in the prior art cannot solve the intergranular corrosion and exfoliation behavior of the aluminum alloy, and the problems of poor surface properties such as corrosion resistance and weather resistance.

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 Patents(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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