Manufacturing method of aluminum alloy thick wall tubular product with high strength and high electric conductivity for power equipment

A technology of power equipment and high conductivity, which is applied in the field of aluminum alloy pipe preparation, which can solve the problems of poor corrosion resistance, high quenching sensitivity, and high alloying degree, so as to improve production efficiency, meet order requirements, and save costs Effect

Active Publication Date: 2014-11-05
SHANDONG YUHANG SPECIAL ALLOY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the high-strength and high-conductivity aluminum alloy thick-walled pipes used in the protection of power equipment and facilities play a vital role in the protection of high-voltage wires and cables. At present, 6063 alloy is mostly used for high-strength and high-conductivity conductors. The strength of 6063 alloy is worse than that of 6082 alloy. Although 6082 alloy has high strength, it is not suitable for online quenching due to its high degree of alloying and high quenching sensitivity. The strength decreases during online quenching. , Corrosion resistance deteriorates. Although off-line quenching can increase the strength of the alloy, the production efficiency and yield are reduced. How to produce 6082 alloy high-strength and high-conductivity thick-walled pipes by on-line quenching, so that it has high strength, good plasticity, high specific strength, High electrical conductivity, high thermal conductivity, good corrosion resistance, no tendency to stress corrosion cracking, strong resistance to intergranular corrosion, good welding performance, constant corrosion resistance in the welding zone, good machinability, etc., suitable for various forms of Surface oxidation and anti-corrosion treatment, maintaining good performance in the environment of atmospheric acid-base, high cold, high heat, humidity, drought, wind and sand, is the problem to be solved by the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0028] The manufacturing method of the high-strength and high-conductivity aluminum alloy thick-walled pipe material for electric equipment of the present invention is specifically realized according to the following steps:

[0029] (1) The cast aluminum alloy is a six-series aluminum alloy round ingot, and the mass percentages of elements in the aluminum alloy ingot are as follows: Si is 1.21%, Fe is 0.12%, Cu is 0.09%, Mn is 0.91%, and Mg is 1.11 %, Cr is 0.23%, Zn is 0.159%, Ti is 0.05%, single impurity ≤ 0.05%, total impurity ≤ 0.15%, and the rest is Al; the ingot specification is Φ320mm×4000mm or the specification is Φ380mm×4000mm. When smelting No. 6 aluminum alloy round ingots, it is required to calculate ingredients, liquid slag removal, degassing, and to filter when casting.

[0030] (2) Cut the No. 6 aluminum alloy round ingot wagon with a specification of Φ320mm×4000mm or a specification of Φ380mm×4000mm, cut the head, cut the tail, take the low magnification, chemi...

Embodiment 2

[0037] The difference between this example and Example 1 is that the No. 6 aluminum alloy round ingot used in step (1) has a refining degree that meets the requirements of the primary oxide film, no metal compound segregation, and Mg:Si is not in accordance with the principle of 1.73:1 , but to make Si surplus, excess Si can improve hardness and strength, slag removal after melting, slag removal after smelting furnace refining, slag removal after holding furnace refining; once degassing after smelting furnace refining, holding furnace refining For the last degassing, after the holding furnace is refined, the degasser is degassed again. The degree of refining reaches the requirement of primary oxide film, there is no segregation of metal and non-metal compounds, and the quality of the melt is guaranteed. Other steps and parameters are the same as in Example 1.

Embodiment 3

[0039] The difference between this example and Example 1 is that in step (2), the wool material is homogeneous, the heating temperature is 560°C, and the temperature is kept for more than 10 hours. The primary oxide film requirements, other steps and parameters are the same as in Example 1.

[0040] The cooling method in the uniform fire system is strong wind cooling to 200 ° C and water cooling to achieve rapid cooling, ensure the maximum solid solution of strengthening elements, reduce the waiting time of the process for more than 24 hours, improve production efficiency, and process high-strength and high-conductivity thick-walled pipes After forming, the surface is treated with various oxidations or coatings, and the luster is beautiful without dark lines or dark lines, which not only ensures the performance but also improves the aesthetic feeling; low-magnification inspection of the oxide film can ensure the internal quality of the ingot and prevent the strength of the pipe...

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PUM

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Abstract

The invention discloses a manufacturing method of an aluminum alloy thick wall tubular product with high strength and high electric conductivity for power equipment. The manufacturing method comprises the following steps: (1) casting an aluminum alloy cast ingot; (2) cutting a rough material and homogenizing; (3) extruding an aluminum alloy thick wall tubular product; (4) carrying out an aging treatment after tension-drawing the aluminum alloy thick wall tubular product; (5) sampling, examining and packaging the aluminum alloy thick wall tubular product. A section bar product produced by the method can be used for satisfying the standard request, improving the labor productivity, saving the cost, satisfying the ordering requirement of users and improving the production efficiency by 13.5-21%, so that the section bar product is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of preparation of aluminum alloy pipes, in particular to a method for manufacturing high-strength and high-conductivity aluminum alloy thick-walled pipes for electric equipment. Background technique [0002] With the rapid development of global machinery manufacturing technology, new technologies, new materials, and new processes, the demand for high-strength and high-conductivity aluminum alloy thick-walled pipes is increasing. At present, the high-strength and high-conductivity aluminum alloy thick-walled pipes used in the protection of power equipment and facilities play a vital role in the protection of high-voltage wires and cables. At present, 6063 alloy is mostly used for high-strength and high-conductivity conductors. The strength of 6063 alloy is worse than that of 6082 alloy. Although 6082 alloy has high strength, it is not suitable for online quenching due to its high degree of alloying and high q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22F1/05B21C37/06
Inventor 王呈刚宋微许辉张建忠蔡文宗苏本显
Owner SHANDONG YUHANG SPECIAL ALLOY EQUIP
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