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Preparation method of aluminum alloy tube busbar

A technology of aluminum alloy tubes and tube busbars, which is applied in the field of electric power, can solve problems such as potential safety hazards, and achieve good mechanical properties, reduce corona discharge, and good metallographic structure

Active Publication Date: 2018-03-09
湖北兴和电力新材料股份有限公司
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Problems solved by technology

At present, replacing solid copper cables with hollow aluminum alloy tubular conductors is the most effective method for power transmission in large substations. However, when the outer diameter of aluminum alloy tubular conductors is greater than or equal to ∮200, the manufacturing method generally adopts extrusion molding. The disadvantage is that the extruded aluminum alloy pipe is a seamed pipe, and its mechanical strength δb ≦ 215Mpa, δ0.2 ≦ 185Mpa, when installed in a large span of a substation, there are hidden dangers in safety

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  • Preparation method of aluminum alloy tube busbar
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Embodiment Construction

[0019] The present invention will be described in detail below through preferred embodiments, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so that the protection scope of the present invention can be defined more clearly.

[0020] A kind of preparation method of aluminum alloy pipe bus bar of the present invention, prepare according to the following steps:

[0021] (1) Heat and melt 99.70% of the aluminum ingots for remelting in a heating furnace. The aluminum ingots for remelting must contain the following chemical components in weight percentages: Si: 0.20-0.60%; Fe: 0.30-0.40%; Cu: 0.10~0.20%; Mn: 0.08~0.12%; Mg: 0.45~0.70%; Cr: 0.08~0.12%; Zn: 0.08~0.12%; Re: 0.07~0.18%; Ti: 0.08~0.12%; ~0.20%, the balance is Al; heat up the furnace charge and fully melt it. During the heating process, remove the scum on the surface of the molten aluminum and stir it 2~3 times, each time for 2~3 minutes, so that the...

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Abstract

The invention discloses a preparation method of an aluminum alloy tube busbar and belongs to the technical field of electric power. The aluminum alloy tube busbar is prepared from the following chemical components in percentage by weight: 0.20-0.60% of Si, 0.30-0.40% of Fe, 0.10-0.20% of Cu, 0.08-0.12% of Mn, 0.45-0.70% of Mg, 0.08-0.12% of Cr, 0.08-0.12% of Zn, 0.07-0.18% of Re, 0.08-0.12% of Ti,0.08-0.20% of Zr and the balance of Al. An aluminum alloy tube prepared by the preparation method of the aluminum alloy tube busbar is a seamless tube, has relatively high conductivity, and meanwhile, has very good mechanical properties at relatively high temperatures.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a pipe busbar, in particular to a preparation method of an aluminum alloy pipe busbar. Background technique [0002] With the continuous improvement of the national economy, the rapid growth of my country's electricity demand, the increase of transmission capacity, the increase of voltage level, the construction of 500--750KV ultra-high voltage power grid, and the start of construction of 1000KV AC and +800KV DC power stations. According to "Made in China 2025", the construction of electric power equipment, one of the ten major areas of breakthrough development, puts forward higher requirements for the aluminum alloy tubular busbar of the UHV power distribution device: large carrying capacity and mechanical strength Good, can run at high temperature. [0003] At present, the method of adding elements such as rare earth (RE) and zirconium (ZR) to AI-MG-SI alloy is used at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/00C22F1/04B21C37/06
CPCB21C37/06C22C1/026C22C1/03C22C1/06C22C21/00C22F1/04
Inventor 陈树理
Owner 湖北兴和电力新材料股份有限公司
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