Preparation method of moderate strength Al-Mg-Si alloy rods and alloy wires through natural ageing treatment

A technology of natural aging and aluminum alloy rods, applied in metal rolling, cable/conductor manufacturing, electrical components, etc., can solve the problems of artificial aging of high-strength aluminum-magnesium-silicon alloy rods or alloy wires, and achieve reduced production costs and stable performance Effect

Active Publication Date: 2012-11-07
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that artificial aging is required in the preparation of medium-strength aluminum-magnesium-silicon alloy rods or alloy wires in the prior art, and to provide a process for preparing aluminum alloy rods through natural aging treatment after continuous casting, rolling and quenching

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  • Preparation method of moderate strength Al-Mg-Si alloy rods and alloy wires through natural ageing treatment

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Effect test

Embodiment 1

[0050] 1. Materials

[0051] Aluminum ingots, aluminum-silicon master alloys, aluminum-magnesium master alloys, and aluminum-rare-earth master alloys with certain composition requirements are selected as raw materials.

[0052] The specific composition requirements of aluminum ingots are as follows: Fe﹤0.20wt%, Si﹤0.07wt%, Cu﹤0.01wt%, Mg﹤0.02wt%, Zn﹤0.04wt%, B﹤0.04wt%, Cr﹤0.004wt%, ( Mn+Ti+Cr+V)﹤0.02wt%, the content of each other impurity element shall not exceed 0.03%wt%, and the total content of impurity elements shall not exceed 0.10wt%. (In this embodiment, electrical aluminum ingots with the brand Al99.7E are used)

[0053] The silicon content in the aluminum-silicon master alloy is 20wt%; the aluminum rare earth master alloy contains 10wt% mixed rare earths, of which the cerium content is not less than 45wt%; the magnesium ingot is the primary magnesium ingot of the brand Mg9998.

[0054] 2. Method

[0055] as per figure 1 In the process flow shown, the aluminum ingo...

Embodiment 2

[0058] 1. Materials

[0059] Aluminum ingots, aluminum-silicon master alloys, aluminum-magnesium master alloys, and aluminum-rare-earth master alloys with certain composition requirements are selected as raw materials.

[0060] The specific composition requirements of aluminum ingots are as follows: Fe﹤0.20wt%, Si﹤0.07wt%, Cu﹤0.01wt%, Mg﹤0.02wt%, Zn﹤0.04wt%, B﹤0.04wt%, Cr﹤0.004wt%, ( Mn+Ti+Cr+V)﹤0.02wt%, the content of each other impurity element shall not exceed 0.03%wt%, and the total content of impurity elements shall not exceed 0.10%. (In this embodiment, electrical aluminum ingots with the brand Al99.7E are used)

[0061] The silicon content in the aluminum-silicon master alloy is 20wt%; the aluminum-rare-earth master alloy contains 10wt% mixed rare earths, of which the cerium content is not less than 45wt%; the magnesium content in the aluminum-magnesium master alloy is 50wt%.

[0062] 2. Method

[0063] as per figure 1 In the process flow shown, the aluminum ingots ...

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Abstract

The invention relates to the field of wire materials and in particular discloses a preparation method of moderate strength Al-Mg-Si alloy rods and alloy wires through a natural ageing treatment. The preparation method includes the steps of alloying treatment, refining, ladle analysis and adjustment, secondary refining, casting, rolling, quenching, natural ageing treatment and the like. Compared with preparation methods of Al-Mg-Si alloy rods, an artificial ageing treatment is usually not needed for the Al-Mg-Si alloy rods and alloy wires drawn by the alloy rods prepared by the method, moderate strength Al-Mg-Si alloy wires which meet using requirements of overhead transmission conductors can be obtained only through the natural ageing, and the production cost of Al-Mg-Si alloy wires is greatly reduced on the premise that using requirements for aluminum alloy wires for overhead conductors are satisfied completely.

Description

technical field [0001] The invention relates to the field of wire materials, and specifically discloses a method for preparing a natural aging-treated medium-strength aluminum-magnesium-silicon alloy rod and alloy wire. Background technique [0002] Overhead power transmission wires are generally composed of two parts: conductor material and reinforcement material. The conductor material can be divided into two types: pure aluminum and aluminum alloy, and the supporting material is generally steel strand or other composite materials. At present, the most widely used overhead transmission wire in China is steel-cored aluminum stranded wire, and its conductor material is industrial pure aluminum. The main performance indicators are: the tensile strength of the aluminum single wire is between 60MPa and 205MPa, and the DC resistivity Between 0.02759Ω·mm 2 / m (62.5%IACS) and 0.028264Ω·mm 2 / m (61%IACS). [0003] With the development of conductor alloying, new types of overhead...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/06C22F1/05B21B1/16B21C1/02B21C1/12H01B13/00
Inventor 郑秋刘斌党朋曾伟蔡西川王晨生
Owner SHANGHAI ELECTRIC CABLE RES INST
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