Aluminium alloy conductor for automotive wires and manufacturing method thereof

A technology for aluminum alloy conductors and manufacturing methods, which is applied in the direction of metal/alloy conductors, cable/conductor manufacturing, conductors, etc., can solve the problems of low elongation, poor fatigue resistance and bending performance of aluminum, and low strength of pure aluminum, etc., to achieve Enhanced tensile strength, improved tensile strength, improved corrosion resistance

Active Publication Date: 2010-12-22
安徽中青欣意铝合金电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent CN 101017712A copper-clad aluminum-magnesium alloy wire in the application of automobile wiring harness, although the cost and weight of the automobile can be reduced by using this alloy, but due to the complicated preparation process and immature technology, it is difficult to promote it on a large scale, and the market prospect Not very good
Automobile wiring harness requ

Method used

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  • Aluminium alloy conductor for automotive wires and manufacturing method thereof
  • Aluminium alloy conductor for automotive wires and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An aluminum alloy conductor for automobile wires, the mass percentage ratio of the aluminum alloy conductor is:

[0025] Including 0.3-0.8wt% iron, iron element can be selected as 0.4%, 0.5%, 0.6%, 0.7%, 0.05-0.20wt% silicon, silicon element can be selected as 0.1%, 0.12%, 0.15%, 0.18% , 0.1~0.5wt% magnesium, such as can be selected as 0.2%, 0.3%, 0.4%, 0.1~0.3wt% copper, such as can be selected around 0.15%, 0.2%, 0.25%, and 0.001~0.04wt% boron , for example, can be selected as 0.01%, 0.03%, and the rest is aluminum and unavoidable impurities. At least one of zirconium and yttrium is also included, and the corresponding content is 0.1-2.0 wt%, for example, it can be selected as 0.2%, 0.4%, 0.5%, 0.8%, 1.1%, 1.3%, 1.6%, 1.8%, 1.9%.

Embodiment 2

[0027] A method for manufacturing an aluminum alloy conductor for an automobile wire, the steps are:

[0028] First, add industrial pure aluminum with a purity greater than 99.7% into the shaft furnace, raise the temperature to 710-760°C to dissolve it completely, then raise the temperature to 740-800°C, add the above-mentioned elements in sequence, and use an electric stirring device to fully stir them evenly. After it is completely melted, heat it at 720-780°C for 20 minutes, add refining agent for degassing and slag removal, and heat it for another 20 minutes before analyzing it in front of the furnace. After the composition meets the requirements, cast it at 580-670°C , the rod is rolled at 450-500°C, and the rolled aluminum alloy rod is subjected to heat preservation treatment at 220-320°C for 2-4 hours, and then the aluminum alloy rod is drawn into an aluminum alloy monofilament, and then multiple aluminum alloy monofilaments are drawn The strands are twisted, and finall...

Embodiment 3

[0031] Select the aluminum ingot with grade Al99.70%, add aluminum-iron master alloy, aluminum-silicon master alloy, aluminum-magnesium master alloy, aluminum-copper master alloy, aluminum-boron master alloy, aluminum-zirconium master alloy, aluminum-yttrium master alloy, each of the alloys The contents of the elements are shown in Table 1.

[0032] After smelting, casting and rolling into alloy rods, the rods are annealed in the middle, and the aluminum alloy rods are drawn into 0.3mm aluminum alloy monofilaments. After annealing, the process temperature, time and various properties are shown in Table 2.

[0033] Table 1

[0034]

[0035] Table 2

[0036]

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Abstract

The invention discloses an aluminium alloy conductor for automotive wires, which has the advantages of high heat resistance, conductivity, tensile strength, extensibility and fatigue resistance, and a manufacturing method thereof. The alloy contains 0.3 to 0.8 weight percent of iron, 0.05 to 0.20 percent of silicon, 0.1 to 0.5 weight percent of magnesium, 0.1 to 0.3 weight percent of copper, 0.001 to 0.04 weight percent of boron, 0.001 to 0.04 weight percent of zirconium, 0.001 to 0.04 weight percent of yttrium, and the balance of aluminium and inevitable impurities, wherein one or two elements, except the aluminium and the inevitable impurities, account for 0.1 to 2.0 weight percent. The manufacturing method comprises the following steps of: adding the iron, silicon, magnesium, copper, boron, zirconium, yttrium and aluminium into a smelting furnace; smelting, and casting and rolling; performing intermediate annealing treatment; drawing into aluminium alloy filaments with the diameterof 0.5mm; and stranding into wire cores, and performing annealing treatment. The conductor prepared by the method has the tensile strength of 210MPa and above, the elongation at break of over 10 percent, the conductivity of over 58 percent, and excellent heat resistance and flexibility.

Description

technical field [0001] The invention relates to an aluminum alloy conductor and a manufacturing method thereof, in particular to an aluminum alloy conductor for automobile wires and a manufacturing method thereof. Background technique [0002] At present, due to the shortage of copper resources and the high price of copper, the fields related to the use of copper will be greatly affected, including the automotive field. With the substantial improvement of the performance and functions of automobiles, the wiring harnesses for automobiles are also increasing. Today, the wiring harnesses for automobiles basically use copper conductors, and very few use copper-clad aluminum or aluminum alloys, but in There are very few in China, and foreign countries have done more in-depth research in this area. [0003] Copper is the most ideal choice for automobile wiring harness conductors. As the competition in the automobile industry becomes more and more fierce, people work hard on autom...

Claims

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Application Information

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IPC IPC(8): H01B1/02H01B13/00H01B7/00B60R16/02
Inventor 林泽民
Owner 安徽中青欣意铝合金电缆有限公司
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