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High conductivity flexible aluminum wire and manufacturing method thereof

A technology with high conductivity and manufacturing methods, which is applied in the direction of cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of increased investment and construction costs of transmission line projects, incomplete resistivity of alloy ingots, and unreachable conductivity. Achieve huge economic and social benefits, low resistivity, and increase the effect of carrying capacity

Inactive Publication Date: 2009-04-29
WUXI HUANENG ELECTRIC CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in order to reduce the loss of the line, it is mainly carried out by direct current transmission or increasing the cross section of the wire, but the investment and construction cost of the transmission line project has increased a lot
Chinese patent 99104364.2 discloses a high-conductivity boron-containing aluminum alloy manufacturing technology, but this patent is only applicable to the manufacturing process of aluminum rods. After drawing and extending, the resistivity of such aluminum rods will increase a lot, and the conductivity will also increase. Cannot achieve 63.5% IACS
However, Chinese patent 200410079600.8 discloses aluminum-based materials and preparation methods for high-conductivity aluminum wires containing rare earths and boron. Achieved 63.5% IACS

Method used

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  • High conductivity flexible aluminum wire and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: 10 tons of aluminum ingots of 99.80 grades are used for melting, and a spectrophotometer is used to analyze that the Si content in the molten aluminum is 0.05%; the Fe content is 0.13%, and the Cu content is 0.004%; nitrogen is blown at the bottom of the furnace in the holding furnace. Add 30kg of refining agent for purification treatment, and control the temperature at 750°C; add AL-B master alloy after 10 minutes to ensure that the boron content in the molten aluminum is controlled at 0.07-0.15%, stir for 3 minutes, and let it stand for 25 minutes , Open the valve of the holding furnace, the aluminum liquid flows into the gutter, and the double-layer glass fiber filter is used to filter impurities. The filtered aluminum liquid enters the crystallization wheel to ensure that the cooling water is uniform and effective, and the ingot rolling temperature is controlled at 450°C, the emulsion temperature is controlled at 55°C during rolling, and the final rolli...

Embodiment 2

[0020] Embodiment 2: 8 tons of aluminum ingots of 99.70A grade are used for melting, and a spectrophotometer is used to analyze that the Si content in the molten aluminum is 0.07%; the Fe content is 0.16%, and the Cu content is 0.004%; nitrogen is blown into the holding furnace at the bottom of the furnace Purify 32kg of refining agent and control the temperature at 740°C; add AL-B master alloy after 10 minutes to ensure that the boron content in the molten aluminum is controlled at 0.07-0.15%, stir for 5 minutes, and let it stand for 28 minutes. Open the valve of the holding furnace, the aluminum liquid flows into the gutter, and the impurities are filtered by double-layer glass fiber filter. The filtered aluminum liquid enters the crystallization wheel to ensure that the cooling water is uniform and effective, and the ingot rolling temperature is controlled at 460°C, the emulsion temperature is controlled at 60°C during rolling, and the final rolling temperature of the measur...

Embodiment 3

[0021] Example 3: 4 tons of 99.70A and 6 tons of 99.80 brand aluminum ingots are used for melting, and the Si content in the molten aluminum is analyzed by a spectrophotometer to be 0.06%; the Fe content is 0.15%, and the Cu content is 0.003%; nitrogen is used in the holding furnace 40kg of molten aluminum refining agent is blown into the bottom of the furnace for purification treatment, and the temperature is controlled at 730°C; after 10 minutes, AL-B master alloy is added, and the amount of AL-B master alloy added should ensure that the boron content in the aluminum liquid is controlled Stir for 5 minutes at 0.07-0.15%, after standing still for 25-30 minutes, open the valve of the holding furnace, the aluminum liquid flows into the gutter, and filter the impurities with a double-layer glass fiber filter. The filtered aluminum liquid enters the crystallization wheel to ensure that the cooling water is uniform and effective, and the ingot rolling temperature is controlled at 4...

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Abstract

The invention relates to a high conductivity annealed aluminum wire and a manufacturing method thereof, in particular to a conductor material fabrication technique used for overhead conductors of a transmission line. The components of the annealed aluminum wire includes Si having the weight percent being less than or equal to 0.08%; Fe having weight percent being less than or equal to 0.02%; Cu having weight percent being less than or equal to 0.005%; B having weight percent of 0.07-0.15%; and Al having the rest weight percent; the annealed aluminum wire can be used for reducing the consumption of the transmission line, thereby effectively lowering the operating cost.

Description

technical field [0001] The invention relates to a manufacturing technology of annealed aluminum wire, in particular to a high-conductivity annealed aluminum wire used for overhead power transmission lines and a manufacturing method thereof. Background technique [0002] At present, the commonly used transmission wires for overhead transmission lines are ordinary steel-cored aluminum stranded wires, and the aluminum wires used for ordinary steel-cored aluminum stranded wires are all made of hard aluminum wires with a conductivity of 61% IACS, and the general resistivity is 0.02790-0.028264Ω. mm 2 / m, while in overhead conductors, aluminum wires are mainly relied on to transmit current. If the resistivity of aluminum wires is high, the line loss will increase during power transmission, thereby increasing the line operating cost. Therefore, in order to reduce the loss of the line, it is mainly carried out by direct current transmission or increasing the cross section of the wi...

Claims

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Application Information

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IPC IPC(8): H01B1/02H01B5/02H01B13/00
Inventor 叶胜平项建新鞠霖
Owner WUXI HUANENG ELECTRIC CABLE
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