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A corrosion-resistant aluminum alloy

A corrosion-resistant aluminum alloy and alloy technology, applied in the field of aluminum alloy materials, can solve the problems of easy corrosion and short service life of aluminum alloy parts, and achieve the effects of excellent corrosion resistance, good high-temperature mechanical properties, and satisfactory comprehensive performance.

Inactive Publication Date: 2015-08-05
邹平宏浩实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing aluminum alloys often cannot meet the requirements, because under the condition of contacting with seawater, the aluminum alloy parts are easily corroded and have a short service life. Therefore, it is necessary to develop new aluminum alloys for ship industry with good corrosion resistance alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A corrosion-resistant aluminum alloy, the chemical composition of the alloy is: 0.45wt% copper, 0.45wt% nickel, 0.45wt% chromium, 0.45wt% antimony, 0.15wt% strontium, and the rest is aluminum and unavoidable impurities. According to the above chemical composition and proportion, it is smelted and cast into the shell of the fish suction pump.

[0019] During the smelting process, it is necessary to: ① try to control and reduce the pollution of the alloy by impurity elements, especially Fe and Si; ② try to control and reduce the air absorption of the alloy, because after the alloy inhales air, it will cause pinholes in the casting and seriously affect the alloy mechanics. performance.

[0020] The shell of the fish suction pump is a casting with complex shape and structure. In the pouring process of the embodiment of the present invention, a stepped double-layer pouring system is adopted, and the following principles are followed: try to make the aluminum alloy melt enter...

Embodiment 2

[0022] A corrosion-resistant aluminum alloy, the chemical composition of the alloy is: 0.35wt% copper, 0.35wt% nickel, 0.35wt% chromium, 0.35wt% antimony, 0.13wt% strontium, and the rest is aluminum and unavoidable impurities.

[0023] Melting method is with embodiment 1.

Embodiment 3

[0025] A corrosion-resistant aluminum alloy, the chemical composition of the alloy is: 0.55wt% copper, 0.55wt% nickel, 0.55wt% chromium, 0.55wt% antimony, 0.18wt% strontium, and the rest is aluminum and unavoidable impurities.

[0026] Melting method is with embodiment 1.

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PUM

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Abstract

The invention belongs to the technical field of aluminum alloy materials, and particularly relates to corrosion resistant aluminum alloy. The corrosion resistant aluminum alloy comprises 0.3wt% to 0.6wt% of copper, 0.3wt% to 0.6wt% of nickel, 0.3wt% to 0.6wt% of chromium, 0.3wt% to 0.6wt% of antimony, 0.12wt% to 0.2wt% of strontium and the balance aluminum and inevitable impurities. The content of the sum of the inevitable impurities accounts for no more than 0.3wt% of the alloy, the content of silicon in the inevitable impurities accounts for no more than 0.015wt% of the alloy, and the content of iron in the inevitable impurities accounts for no more than 0.015wt% of the alloy. The corrosion resistant aluminum alloy has the advantages that the composition and the matching ratio of the alloy are optimized, the content of impurity elements especially the content of the iron and the content of the silicon in the alloy are controlled, so that the corrosion resistant performance of the corrosion resistant aluminum alloy is excellent, the high-temperature mechanical performance is good, and the comprehensive performance can satisfy the requirement.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials, and in particular relates to a corrosion-resistant aluminum alloy. Background technique [0002] Aluminum alloy materials are widely used in industries such as aviation, aerospace, ships, building materials, home appliances, telecommunications, and power cables because of their low density, high specific strength, good electrical conductivity, and large reserves, and play an important role. . At present, the aluminum alloys used in the shipbuilding industry, especially the aluminum alloy parts in contact with seawater, such as the shell of the fish suction pump, have high requirements on the corrosion resistance of aluminum alloys. However, the existing aluminum alloys often cannot meet the requirements, because under the condition of contact with seawater, the aluminum alloy parts are prone to corrosion and the service life is short. Therefore, it is necessary to develop new al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00
Inventor 李广富姜宏涛刘志顺朱安爱岳丽敏马迎迎任伟宋蓓蓓王继清李丽刘国强
Owner 邹平宏浩实业有限公司