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Method for preparing aluminium magnesium silicon alloy rod base and preparing high-strength aluminium magnesium silicon alloy conductor

A technology of aluminum alloy rods and aluminum-silicon intermediate alloys, which is applied in the field of electrical engineering, can solve problems such as artificial aging treatment and unsatisfactory material properties, and achieve the effects of stable performance and reduced production costs

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

AI Technical Summary

Problems solved by technology

Patent CN101200783A mentions a method for preparing high-strength aluminum-magnesium-silicon alloy wire. The method is mainly characterized by the addition of aluminum-boron refiner, and the use of cryolite powder covering agent and sodium salt nitrogen solid-gas mixed refining agent. The patent’s The advantage is that when the strength of the aluminum alloy wire is guaranteed to be 315MPa, its electrical conductivity is not lower than 53% IACS, but the alloy billet still needs artificial aging treatment after drawing
Patent CN1485455A relates to a method of manufacturing non-heat-treated high-conductivity heat-resistant aluminum alloy wire, but the material properties do not meet the requirements of LHA1 and LHA2

Method used

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  • Method for preparing aluminium magnesium silicon alloy rod base and preparing high-strength aluminium magnesium silicon alloy conductor
  • Method for preparing aluminium magnesium silicon alloy rod base and preparing high-strength aluminium magnesium silicon alloy conductor

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Experimental program
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Effect test

Embodiment 1

[0039] Aluminum ingots, aluminum-silicon master alloys, aluminum-rare earth alloy aluminum ingots, aluminum-boron master alloys, and aluminum-magnesium master alloys are selected as raw materials.

[0040] The aluminum ingot is an electrician aluminum ingot with the brand name Al99.7E, and the specific composition (percentage, wt%) of the aluminum ingot is as follows: Fe<0.20, Si<0.07, Cu<0.01, Mg<0.02, Zn<0.04, B<0.01 0.04, Cr<0.004, (Mn+Ti+Cr+V)<0.02, the content of each other impurity element shall not be greater than 0.03wt%, and the total content of impurity elements shall not be greater than 0.30wt%.

[0041] The silicon content in the aluminum-silicon master alloy is 11wt%; the aluminum-rare earth alloy contains 10wt% of mixed rare earths, and the cerium content in the mixed rare earths is not less than 45wt%; the boron content in the aluminum-boron master alloy is 1wt%; the aluminum-magnesium master alloy The content of magnesium in the medium is 50wt%. Such as figur...

Embodiment 2

[0044] Aluminum ingots, aluminum-silicon master alloys, aluminum-rare earth alloy aluminum ingots, aluminum-boron master alloys, and aluminum-magnesium master alloys are selected as raw materials.

[0045] The aluminum ingot is an electrician aluminum ingot with the brand name Al99.7E, and the specific composition (percentage, wt%) of the aluminum ingot is as follows: Fe<0.20, Si<0.07, Cu<0.01, Mg<0.02, Zn<0.04, B<0.01 0.04, Cr<0.004, (Mn+Ti+Cr+V)<0.02, the content of each other impurity element shall not be greater than 0.03wt%, and the total content of impurity elements shall not be greater than 0.30wt%.

[0046] The silicon content in the aluminum-silicon master alloy is 12wt%; the aluminum-rare earth alloy contains 8wt% of mixed rare earths, and the cerium content in the mixed rare earths is not less than 45wt%; the boron content in the aluminum-boron master alloy is 1wt%; the aluminum-magnesium master alloy The content of magnesium in the medium is 55wt%. Such as figure...

Embodiment 3

[0049] Aluminum ingots, aluminum-silicon master alloys, aluminum-rare earth alloy aluminum ingots, aluminum-boron master alloys, and aluminum-magnesium master alloys are selected as raw materials.

[0050] The aluminum ingot is an electrician aluminum ingot with the brand name Al99.7E, and the specific composition (percentage, wt%) of the aluminum ingot is as follows: Fe<0.20, Si<0.07, Cu<0.01, Mg<0.02, Zn<0.04, B<0.01 0.04, Cr<0.004, (Mn+Ti+Cr+V)<0.02, the content of each other impurity element shall not be greater than 0.03wt%, and the total content of impurity elements shall not be greater than 0.30wt%.

[0051] The silicon content in the aluminum-silicon master alloy is 9wt%; the aluminum-rare earth alloy contains 11wt% of mixed rare earths, and the cerium content in the mixed rare earths is not less than 45wt%; the boron content in the aluminum-boron master alloy is 1.5wt%; The content of magnesium in the alloy is 45wt%. Such as figure 1 As shown, the aluminum ingots ar...

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Abstract

The invention belongs to the field of electrotechnics, and provides a method for preparing an aluminium magnesium silicon alloy rod base and preparing a high-strength aluminium magnesium silicon alloy conductor. Through a smelting technique and refining especially the control of a rolling technique, an aluminium magnesium silicon alloy rod base with a specific state is prepared, and can be directly pulled, after the natural aging, to obtain an aluminium magnesium silicon alloy wire that accords with LHA1 and LHA2 requirements. As compared with a conventional technique, the aluminium magnesiumsilicon alloy rod base prepared by the method provided by the invention is stable in performance, and the aluminium magnesium silicon alloy wire prepared by the aluminium magnesium silicon alloy rod is stable in linearity without any artificial aging treating, thereby substantially reducing the cost for producing the aluminium magnesium silicon alloy wire and fully meeting the requirement of an aluminium alloy wire used for an overhead twisted wire.

Description

technical field [0001] The invention belongs to the field of electrotechnical technology. The patent of the invention relates to a process method for an aluminum alloy rod prepared through natural aging. After the aluminum alloy rod is drawn, it can meet the requirements of high-strength aluminum alloy wire for overhead power transmission conductors without other heat treatment processes. 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 support material is generally steel wire or other composite materials. At present, the most widely used overhead transmission wire in China is the steel cored aluminum stranded wire, and its conductor material is pure aluminum. At 0.02759(62.5%IACS) and 0.028264Ω·mm 2 / m(61%IACS). With the development of aluminum alloy materials, overhead power tra...

Claims

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Application Information

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IPC IPC(8): C22F1/04C22C1/03C22C1/06C22C21/00C22C21/02C22C21/08C22F1/043C22F1/047
Inventor 刘斌蔡西川党朋郑秋曾伟
Owner SHANGHAI ELECTRIC CABLE RES INST
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