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Semihard aluminum wire, overhead wire and preparation method of semihard aluminum wire

A technology for overhead power transmission wires and hard aluminum, which is applied in the direction of root rod/rod/wire/strip conductor, and the manufacture of extensible conductors/cables, etc. Complexity and other issues, to achieve the effect of simple and convenient construction, energy-saving construction characteristics, and simple operation

Active Publication Date: 2012-09-19
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since these two processes involve factors such as annealing process and deformation control at the same time, the production process is relatively complicated, and the process control is also difficult, resulting in insufficient stability and large fluctuations in the performance of the final semi-duralumin wire.

Method used

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  • Semihard aluminum wire, overhead wire and preparation method of semihard aluminum wire
  • Semihard aluminum wire, overhead wire and preparation method of semihard aluminum wire
  • Semihard aluminum wire, overhead wire and preparation method of semihard aluminum wire

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 The schematic diagram of the preparation process of aluminum rod, semi-hard aluminum single wire and overhead transmission wire is shown. The main process includes aluminum ingot smelting, casting, rolling, drawing, stranding and other processes. The specific steps are as follows:

[0039] Aluminum ingots with an aluminum content of not less than 99.70% are selected and melted in a shaft furnace; then the molten aluminum is refined in a holding furnace at a refining temperature of 710-730°C, first using solid refining flux NaCl (the amount of NaCl added is 8kg / t aluminum liquid) to cover the surface of the aluminum liquid for refining treatment, and then use a chlorine-nitrogen mixed gas to blow into the aluminum liquid (the volume percentage of chlorine in the chlorine-nitrogen mixed gas is 20%) for refining treatment, and then the aluminum liquid is static Leave for 50 minutes. When the aluminum liquid flowing out from the holding furnace passes thr...

Embodiment 2

[0047] Aluminum ingots with an aluminum content of not less than 99.70% are selected and melted in a shaft furnace; then the molten aluminum is refined in a holding furnace at a refining temperature of 710-730°C, and the solid refining flux CaF is first used 2 (CaF 2 The amount of addition is 6kg / t aluminum liquid) to cover the surface of the aluminum liquid for refining treatment, and then use a chlorine-nitrogen mixed gas to blow into the aluminum liquid (the volume percentage of chlorine in the chlorine-nitrogen mixed gas is 20%) for refining treatment, Then the molten aluminum was left to stand for 50 minutes. When the aluminum liquid flowing out from the holding furnace passes through the launder, it is filtered by foam ceramic bricks (the main impurity elements and their weight percentages in the filtered aluminum liquid are controlled as: Si≤0.11%, Fe≤0.25%, Cu≤0.01 %, V+Ti+Mn+Cr≤0.02%), and then enter the crystallization wheel of the casting machine for continuous cas...

Embodiment 3

[0054] Aluminum ingots with an aluminum content of not less than 99.70% are selected and melted in a shaft furnace; then the molten aluminum is refined in a holding furnace at a refining temperature of 710-730°C, first using solid refining fluxes NaCl and KCl (addition of NaCl The amount is 3kg / t aluminum liquid, and the addition amount of KCl is 4kg / t aluminum liquid) to cover the surface of aluminum liquid for refining treatment, then adopt chlorine-nitrogen mixed gas to blow into aluminum liquid (the volume of chlorine gas in the chlorine-nitrogen mixed gas is 100% Min content is 20%) carry out refining treatment, then aluminum liquid stands still for 40 minutes. When the aluminum liquid flowing out from the holding furnace passes through the launder, it is filtered by foam ceramic bricks (the main impurity elements and their weight percentages in the filtered aluminum liquid are controlled as: Si≤0.11%, Fe≤0.25%, Cu≤0.01 %, V+Ti+Mn+Cr≤0.02%), and then enter the crystalliza...

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Abstract

The invention belongs to the field of electrotechnics, relates to an aluminum rod with a specific state, a semihard aluminum single wire, an overhead electric transmitting wire with the semihard aluminum single wire serving as a conductor layer and a preparation method of the semihard aluminum single wire. The aluminum rod with the specific state is prepared by controlling a casting process of the aluminum rod, and an aluminum single wire conductor which has the semihard characteristic and is stable in performance is directly prepared by controlling a drawing process. The preparation method of the semihard aluminum single wire has the advantages of being short in flow and simple to operate and the like. The prepared semihard aluminum single wire conductor consumes little electric energy and is stable in performance. The overhead electric transmitting wire made by enabling the semihard aluminum single wire to serve as a conductor material has the advantages of being energy-saving and good in construction characteristic and the like.

Description

technical field [0001] The invention belongs to the technical field of electric engineering, and relates to an aluminum rod with a specific state, a semi-hard aluminum single wire, an overhead power transmission wire with the semi-hard aluminum single wire as a conductor layer, and a preparation method thereof. Background technique [0002] The overhead transmission wire is composed of conductive materials and supporting materials. The conductive materials include aluminum and aluminum alloys. The supporting materials include galvanized steel wires, aluminum-clad steel wires, carbon fiber or other composite material mandrels, etc. At present, the most widely used overhead transmission wire is steel-cored aluminum stranded wire, and its conductor material is hard aluminum wire. The main performance indicators are that the strength is not less than 160MPa, and the DC resistivity at 20 °C is not more than 0.028264Ω·mm 2 / m. In order to reduce the power loss in the process of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/02H01B13/008
Inventor 刘斌蔡西川党朋黄国飞徐睿郑秋
Owner SHANGHAI ELECTRIC CABLE RES INST
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