Rare earth aluminum alloy conductor and preparation method thereof

An aluminum alloy conductor and aluminum alloy technology, applied in metal rolling and other directions, can solve problems such as poor elongation, flexibility and creep resistance, poor electrical conductivity of wires and cables, and weak corrosion resistance of electrical aluminum, etc. Achieve the effects of improving corrosion resistance, facilitating processing, improving creep resistance and thermal stability

Inactive Publication Date: 2011-07-20
安徽省惠尔电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production of electrical round aluminum rods, there are several quality indicators that are very important: one is the resistivity, the size of the resistivity directly affects the conductivity of the final product-wire and cable, and the factors that determine the resistivity are mainly related to the raw materials. Chemical composition is related, especially in aluminum alloys, if copper, iron and other impurity elements are added, the conductive effect of wires and cables will be deteriorated; the second is mechanical properties, when ordinary electrical aluminum is used as a conductor, the elongation of wires and cables, Both flexibility and creep resistance are poor, and the safety and stability of use are low; the third is corrosion resistance, ordinary electrical aluminum is not strong in corrosion resistance, and its service life is relatively short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Casting process

[0020] 1. Ingredients

[0021] 8480kg aluminum ingot (99.70% aluminum content, 0.05% Si content, 0.07% Fe content), 80Kg copper aluminum alloy (26% Cu content), 117kg rare earth aluminum alloy (10% rare earth content), 28kg boron aluminum alloy (3.5% B content), 10kg refining agent (NaCl KCl Na 3 AlF 6 ·ZnCl 2 ).

[0022] In this embodiment, the iron content in the aluminum ingot is sufficient to make the iron content in the prepared rare earth aluminum alloy conductor meet the requirements, so no additional iron and aluminum alloys are added in this embodiment.

[0023] 2. Feeding method

[0024] When feeding, the copper-aluminum alloy, rare-earth aluminum alloy is evenly added in batches from the cupola along with the aluminum ingots to ensure that the composition is as uniform as possible.

[0025] 3. Heat preservation process

[0026] The temperature of the aluminum alloy liquid obtained after melting aluminum ingots, copper-aluminum allo...

Embodiment 2

[0049] 1. Casting process

[0050] 1. Ingredients

[0051] 6390kg aluminum ingot (99.70% aluminum content, 0.06% Si content, 0.10% Fe content), 78Kg copper aluminum alloy (24% Cu content), 121kg rare earth aluminum alloy (10% rare earth content), 21kg boron aluminum alloy (3.5% B content), 8kg refining agent (NaCl·KCl·Na 3 AlF 6 ·ZnCl 2 ).

[0052] In this embodiment, the iron content in the aluminum ingot is sufficient to make the iron content in the prepared rare earth aluminum alloy conductor meet the requirements, so no additional iron and aluminum alloys are added in this embodiment.

[0053] 2. Feeding method

[0054] When feeding, the copper-aluminum alloy, rare-earth aluminum alloy is evenly added in batches from the cupola along with the aluminum ingots to ensure that the composition is as uniform as possible.

[0055] 3. Heat preservation process

[0056] The temperature of the aluminum alloy liquid obtained after melting aluminum ingots, copper-aluminum alloy...

Embodiment 3

[0080] 1. Casting process

[0081] 1. Ingredients

[0082] 8520kg aluminum ingot (0.07% Si content, 0.12% Fe content), 395kg aluminum-iron alloy (21% Fe content), 139Kg aluminum-copper alloy (26% Cu content), 126kg rare earth aluminum alloy (9.8% rare earth content), 28kg boron Aluminum alloy (3.5% B content), 10kg refining agent (NaCl KCl Na 3 AlF 6 ·ZnCl 2 ).

[0083] 2. Feeding method

[0084] When feeding, the aluminum-iron alloy and aluminum-copper alloy are evenly added in batches from the cupola along with the aluminum ingots to ensure that the ingredients are as uniform as possible.

[0085] 3. Heat preservation process

[0086] The temperature of the aluminum alloy liquid obtained after melting aluminum ingots, copper-aluminum alloys, aluminum-iron alloys and rare earth aluminum alloys flows into the holding furnace is controlled at 720-750°C; the volume of the aluminum alloy liquid entering the holding furnace is its aluminum alloy liquid When half of the tota...

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Abstract

The invention relates to a rare earth aluminum alloy conductor and a preparation method thereof. The rare earth aluminum alloy comprises the following components in percentage by weight: 0.20-0.35% of copper, 0.12-0.20% of rare earth elements, 0.05-0.15% of iron, 0.02-0.10% of silicon and balance of aluminum and inevitable impurities. The rare earth aluminum alloy conductor is prepared from the raw material by a smelting process and a continuous casting and tandem rolling process. The rare earth aluminum alloy conductor prepared in the invention improves the adverse effect of stress in the drawing and twisting processes on the structure of the conductor. According to the rare earth aluminum alloy conductor provided by the invention, the strength is increased by 10%, the elongation reaches30%, the resistance to corrosion is improved by 1.5 times and the resistivity is kept within 0.02810 ohm.mm<2> / m.

Description

technical field [0001] The invention belongs to the field of wire and cable conductor materials, and in particular relates to a rare earth aluminum alloy conductor and a preparation method thereof. Background technique [0002] In the production of electrical round aluminum rods, there are several quality indicators that are very important: one is the resistivity, the size of the resistivity directly affects the conductivity of the final product-wire and cable, and the factors that determine the resistivity are mainly related to the raw materials. Chemical composition, especially in aluminum alloys, if copper, iron and other impurity elements are added, the conductive effect of wires and cables will be deteriorated; the second is mechanical properties, when ordinary electrical aluminum is used as a conductor, the elongation of wires and cables, The flexibility and creep resistance are poor, and the safety and stability of use are low; the third is corrosion resistance, ordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/14C22C1/02C22C1/06B21B1/46
Inventor 萨意达・尼卡因
Owner 安徽省惠尔电气有限公司
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