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A nano-modified aluminum alloy material and its preparation method and energy-saving and environment-friendly power fittings produced therefrom

An aluminum alloy material, nano-modification technology, applied in the field of aluminum matrix composite materials and power fittings preparation, can solve the problems of poor processing performance, limitations, unsuitability for mass production, etc., and achieve damage load enhancement, installation and maintenance. The effect of convenience and large magnetic loss

Active Publication Date: 2021-03-09
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the first method improves the performance of the material greatly, but it has certain limitations, and it is easy to lead to poor processing performance of the material; the second method currently mainly uses powder metallurgy technology, which can greatly improve the strength of the matrix material, but Not suitable for mass production

Method used

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  • A nano-modified aluminum alloy material and its preparation method and energy-saving and environment-friendly power fittings produced therefrom
  • A nano-modified aluminum alloy material and its preparation method and energy-saving and environment-friendly power fittings produced therefrom
  • A nano-modified aluminum alloy material and its preparation method and energy-saving and environment-friendly power fittings produced therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of a nano-modified aluminum alloy material, the specific steps are as follows:

[0027] 1) Mix silicon powder and carbon nanotubes with a mass ratio of 7:3 and perform mechanical ball milling. By controlling the ball milling process parameters, the silicon powder and carbon nanotubes are fully mixed to construct a core-shell structure and obtain silicon-coated carbon nanotubes;

[0028] 2) Add the silicon-coated carbon nanotubes obtained in step 1) into the 6005 aluminum alloy matrix for semi-solid stirring, the amount of silicon-coated carbon nanotubes added is 0.25wt%, the stirring temperature is 600°C, the stirring time is 30min, and then the temperature is raised to Cast at 740°C to obtain nano-modified aluminum alloy casting rods.

[0029] Such as figure 1 Shown is the SEM photo of silicon-coated carbon nanotubes after ball milling. The mixed powder of carbon nanotubes and silicon powder is repeatedly impacted by the ball milling medium, and h...

Embodiment 2

[0032] A preparation method of a nano-modified aluminum alloy material, the preparation method is similar to that of Example 1, except that the mass ratio of silicon powder to carbon nanotubes is 7:6.

[0033] Performance tests were performed on the nano-modified aluminum alloy material prepared in this example, and the test results are shown in Table 1.

Embodiment 3

[0035] A preparation method of a nano-modified aluminum alloy material, the preparation method is similar to that of Example 1, except that the mass ratio of silicon powder to carbon nanotubes is 14:3.

[0036] Performance tests were performed on the nano-modified aluminum alloy material prepared in this example, and the test results are shown in Table 1.

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Abstract

The invention discloses a nano-modified aluminum alloy material and its preparation method and the energy-saving and environment-friendly electric fittings produced therefrom. The method comprises the following steps: 1) preparing silicon-coated carbon nanotubes: mixing silicon powder and carbon nanotubes Mechanical ball milling to fully mix silicon powder and carbon nanotubes to construct a core-shell structure to obtain silicon-coated carbon nanotubes; 2) Preparation of nano-modified aluminum alloy materials: adding silicon-coated carbon nanotubes obtained in step 1) to aluminum alloy Semi-solid stirring is carried out in the matrix, so that the added silicon-coated carbon nanotubes are uniformly dispersed in the aluminum alloy matrix, and then the temperature is raised for casting to obtain cast rods of nano-modified aluminum alloy materials. Compared with traditional malleable cast iron materials for electric fittings, the nano-modified aluminum alloy material prepared by the invention has the advantages of light weight, high strength and no galvanizing, and has higher strength than conventional aluminum alloys.

Description

technical field [0001] The invention belongs to the technical field of preparation of aluminum-based composite materials and electric power fittings, and in particular relates to a nano-modified aluminum alloy material, a preparation method thereof and energy-saving and environment-friendly electric power fittings produced therefrom. Background technique [0002] At present, cast iron fittings are still used on a large scale in my country's power distribution lines, which cause huge power loss at all times during operation. Moreover, the difficulty of galvanizing at this stage has also affected the production and supply of cast iron fittings. Earlier in the industry, aluminum alloy was used as an energy-saving fitting material, but the strength of aluminum alloy is insufficient, which limits its promotion and use in the field of fittings. In fact, materials are the biggest bottleneck in the development of high-performance and energy-saving fittings. [0003] In the existing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C21/00
CPCC22C1/101C22C1/1036C22C21/00C22C26/00C22C2026/002C22C1/1047
Inventor 蔡炜王利民卢才璇何卫汤超吴昊詹耿陈胜男
Owner STATE GRID CORP OF CHINA
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