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Wear-resistant aluminum alloy

An aluminum alloy and alkali-resistant technology, applied in the field of wear-resistant aluminum alloys, can solve problems such as complicated operation and difficult quality control, and achieve the effect of improving alkali corrosion resistance and hardness

Active Publication Date: 2015-12-23
佛山市金色恒辉铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex operation and difficult quality control of existing methods for improving the hardness of aluminum-silicon alloys. The present invention provides a high-hardness wear-resistant aluminum alloy by adding alloy elements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 12% silicon, 6% magnesium, 0.2% chromium, 0.3% titanium, 0.04% manganese, 0.16% ytterbium, 0.1% tungsten by weight, and the balance is aluminum, into the melting furnace, melting at 1050°C, and casting Forming to obtain wear-resistant aluminum alloy.

Embodiment 2

[0014] Add 13% silicon, 5% magnesium, 0.14% chromium, 0.2% titanium, 0.05% manganese, 0.1% ytterbium, 0.13% tungsten by weight, and the balance is aluminum, into the melting furnace, melting at 1000 ° C, and casting Forming to obtain wear-resistant aluminum alloy.

Embodiment 3

[0016] Add 11% silicon, 4% magnesium, 0.1% chromium, 0.4% titanium, 0.08% manganese, 0.18% ytterbium, 0.15% tungsten by weight, and the balance is aluminum, into the melting furnace, melting at 1100°C, and casting Forming to obtain wear-resistant aluminum alloy.

[0017] .

[0018] Corrosion resistance test: the alloy is immersed in the corrosion medium 1% NaOH for 1 month, and the corrosion rate is 0.01~0.015g / (m 2 h), which is better than the 0.025~0.03g / (m 2 h).

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Abstract

The invention discloses a wear-resistant aluminum alloy which consists of the following components in percentage by weight: 11-13% of silicon, 4-6% of magnesium, 0.1-0.2% of chromium, 0.2-0.4% of titanium, 0.04-0.08% of manganese, 0.1-0.18% of ytterbium, 0.1-0.15% of tungsten and the balance of aluminum. By adopting the composition, the hardness of the wear-resistant aluminum alloy can be obviously improved by about 30% from about 490 before to about 620, and the alkali corrosion of the obtained alloy is obviously improved.

Description

technical field [0001] The invention belongs to the field of aluminum alloys, and in particular relates to a wear-resistant aluminum alloy. Background technique [0002] Aluminum-silicon alloy is a common aluminum alloy. Changes in the ratio of aluminum to silicon can have a great impact on hardness. For example, when the silicon content is less than 7%, the aluminum-silicon alloy has good ductility, and the silicon content exceeds the aluminum-silicon eutectic. (11.7% silicon), the silicon particles in the alloy increase significantly, and the hardness and wear resistance of the alloy also increase significantly. The existing method uses electrochemical treatment of the aluminum-silicon alloy to erode the surface aluminum and retain the silicon in the matrix , in order to further improve its wear resistance and hardness, but this method has the problems of complicated operation and difficult control of processing quality. Contents of the invention [0003] The purpose of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02
Inventor 蒋伟锋
Owner 佛山市金色恒辉铝业有限公司
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