KR20030032281A - The manufacturing method of aluminium alloy which used in overhead transmission line - Google Patents

The manufacturing method of aluminium alloy which used in overhead transmission line Download PDF

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Publication number
KR20030032281A
KR20030032281A KR1020010063979A KR20010063979A KR20030032281A KR 20030032281 A KR20030032281 A KR 20030032281A KR 1020010063979 A KR1020010063979 A KR 1020010063979A KR 20010063979 A KR20010063979 A KR 20010063979A KR 20030032281 A KR20030032281 A KR 20030032281A
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South Korea
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aluminum
melt
alloy
transmission line
aluminum melt
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KR1020010063979A
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Korean (ko)
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김수연
이인호
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엘지전선 주식회사
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Priority to KR1020010063979A priority Critical patent/KR20030032281A/en
Publication of KR20030032281A publication Critical patent/KR20030032281A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium

Abstract

PURPOSE: A manufacturing method of an aluminium alloy wire rod for power transmission line is provided to compose aluminum alloy melt by injecting an alloy material into aluminum melt, thereby melting the alloy material into the aluminum melt so as to manufacture a heat resistant aluminum alloy wire rod for power transmission line. CONSTITUTION: In a process for forming aluminum alloy melt by injecting an alloy material into aluminum melt(2) inside a melting furnace(3), thereby melting the alloy material into the aluminum melt so as to manufacture a heat resistant aluminum alloy wire rod for power transmission line, the manufacturing method of the aluminium alloy wire rod for power transmission line is characterized in that the alloy ingots(1) are melted into the aluminum melt(2) by injecting porous alloy ingots(1) into the aluminum melt(2) inside the melting furnace(3), wherein the porous alloy ingots are manufactured by blowing an inert gas into the alloy ingots during its molding process, so the alloy ingots have lower specific gravity than the aluminum melt(2).

Description

가공 송전선용 알루미늄 합금 선재의 제조 방법{The manufacturing method of aluminium alloy which used in overhead transmission line}The manufacturing method of aluminum alloy which used in overhead transmission line}

본 발명은 가공 송전선용 알루미늄 합금 선재를 제조하기 위하여 용해로 내부의 알루미늄 용융물에 합금 재료를 투입 용해하여 알루미늄 합금 용융물을 조성하는 과정에서, 알루미늄 용융물보다 비중이 작아지도록 주형 과정에서 불활성 기체를 불어넣어 다공질화된 합금괴를 알루미늄 용융물에 투입하는 구성으로 상기 알루미늄 용융물에서 부유하면서 용해되는 다공질 합금괴의 조성 성분이 상기 알루미늄 용융물의 상부에서 하부로 균일하게 분산되게 하므로서 알루미늄 합금 용융물을 정확한 함량으로 균일하게 조성하는 방법에 관한 것이다.In the present invention, in the process of forming an aluminum alloy melt by injecting an alloying material into the aluminum melt inside the melting furnace to produce an aluminum alloy wire for the overhead transmission line, by blowing an inert gas in the casting process so that the specific gravity is smaller than the aluminum melt A composition in which the oxidized alloy ingot is introduced into the aluminum melt, and the composition of the porous alloy ingot dissolved in the aluminum melt is uniformly dispersed from the top to the bottom of the aluminum melt, thereby uniformly forming the aluminum alloy melt in an accurate amount. It is about how to.

대도시 지역의 에너지 사용 급증 및 전력 수요의 지속적인 증가로 인하여 가공 송전선망의 고전압화, 대전류화가 진행되고 있다.Due to the rapid increase in energy use in metropolitan areas and the continuous increase in electric power demand, high voltage and high current of overhead transmission lines are progressing.

종래의 가공 송전선망에 사용되는 가공 송전선은 알루미늄 선재를 원재료로 제조되었으나 내열성이 부족하기 때문에 가공 송전선망의 고전압화, 대전류화 추세에 대응하기 위하여 내열성이 우수한 알루미늄 합금 선재로 대체되고 있다. 내열성 알루미늄 합금을 제조하려면 알루미늄에 지르코늄, 실리콘, 철 등의 성분을 정확한 함량으로 균일하게 합금해야 한다.The overhead transmission line used in the conventional overhead transmission line is made of aluminum wire as a raw material, but because of lack of heat resistance, in order to cope with the trend of high voltage and large current of the overhead transmission line network has been replaced by aluminum alloy wire having excellent heat resistance. In order to manufacture heat-resistant aluminum alloys, aluminum must be uniformly alloyed with zirconium, silicon, iron, and the like in an accurate content.

종래에는 용해로 내부의 알루미늄 용융물에 상기한 성분들로 조성된 합금괴를 투입하고 상기 알루미늄 용융물을 금속 재질의 교반기로 교반하여 상기 합금괴를 용해시키므로서 알루미늄 합금 용융물을 조성하였으며, 조성된 알루미늄 합금 용융물을 원재료로 알루미늄 합금 선재를 제조했다. 그러나 상기한 알루미늄 합금 용융물의 조성 방법은 합금괴가 알루미늄 용융물보다 비중이 커서 용해로의 바닥으로 가라않으므로 합금괴의 조성 성분이 알루미늄 용융물에 균일하게 분산되지 않으며, 또한 교반기의 금속 성분이 알루미늄 용융물에 혼합되기 때문에 알루미늄 합금 용융물이 정확한 함량으로 균일하게 조성되지 않으므로, 이러한 알루미늄 합금 용융물로 제조된 알루미늄 합금 선재의 전기적, 기계적 특성이 저하된다는 문제점이 있다.Conventionally, an alloy ingot composed of the above components was introduced into an aluminum melt inside a melting furnace, and the aluminum ingot was formed by stirring the aluminum melt with a metal stirrer to dissolve the alloy ingot. The aluminum alloy wire was manufactured from the raw materials. However, in the composition method of the aluminum alloy melt described above, since the alloy ingot has a specific gravity greater than that of the aluminum melt and does not go to the bottom of the melting furnace, the composition of the alloy ingot is not uniformly dispersed in the aluminum melt, and the metal components of the stirrer are mixed in the aluminum melt. Since the aluminum alloy melt is not uniformly formulated to the correct content, there is a problem that the electrical and mechanical properties of the aluminum alloy wire made of such aluminum alloy melt is reduced.

본 발명의 목적은 알루미늄 용융물보다 비중이 작아지도록 주형 과정에서 불활성 기체를 불어넣어 다공질화된 합금괴를 용해로 내부의 알루미늄 용융물에 투입하는 구성으로 상기 알루미늄 용융물에서 부유하는 다공질 합금괴의 조성 성분이 상기 알루미늄 용융물의 상부에서 하부로 균일하게 분산되게 하므로서 알루미늄 합금 용융물을 정확한 함량으로 균일하게 조성하는 용해 방법을 제공하는데 있다.An object of the present invention is to inject a porous alloy ingot into the aluminum melt in the melting furnace by blowing an inert gas in the molding process so that the specific gravity is smaller than the aluminum melt in the composition of the porous alloy ingot floating in the aluminum melt It is to provide a dissolution method for uniformly dispersing the aluminum alloy melt in the correct content by allowing the aluminum melt to be uniformly dispersed from the top to the bottom.

도 1은 본 발명의 조성 방법의 구성도1 is a block diagram of a composition method of the present invention

도 2는 종래의 조성 방법의 구성도2 is a block diagram of a conventional composition method

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 합금괴2 : 알루미늄 용융물1: alloy ingot 2: aluminum melt

3 : 용해로4 : 교반기3: melting furnace 4: stirrer

본 발명의 알루미늄 합금 용융물의 조성 방법은 알루미늄 용융물(2)보다 비중이 작아지도록 주형 과정에서 불활성 기체를 불어넣어 다공질화된 합금괴(1)를 용해로(3) 내부의 알루미늄 용융물(2)에 투입하여 용해시키는 특징이 있다.In the composition method of the aluminum alloy melt of the present invention, an inert gas is blown during the molding process so that the specific gravity is smaller than that of the aluminum melt (2), and the porous alloy ingot (1) is introduced into the aluminum melt (2) inside the melting furnace (3). It is characterized by dissolving.

도면과 실시예를 참조하여 본 발명을 상세하게 설명한다.The present invention will be described in detail with reference to the drawings and examples.

도 1은 본 발명에 의한 알루미늄 합금 용융물의 조성 방법을 개략적으로 도시한 것이고 도 2는 종래의 알루미늄 합금 용융물의 조성 방법을 개략적으로 도시한 것이다.1 schematically illustrates a method of forming an aluminum alloy melt according to the present invention, and FIG. 2 schematically illustrates a method of forming a conventional aluminum alloy melt.

합금 재료를 형성하는 일정한 함량의 지르코늄 분말, 실리콘 분말, 철 분말 등을 균일하게 혼합하고 용융하고 합금 용융물을 주형하며, 주형중인 합금 용융물에 질소, 아르곤 등의 불활성 기체를 불어넣어 다공질화시키므로서 알루미늄 용융물(2)보다 비중이 작은 다공질 합금괴(1)를 형성한다. 상기 다공질 합금괴(1)가 알루미늄 용융물(2)보다 비중이 작아지도록 주형 과정중인 합금 용융물에 다량의 불활성 기체를 고압으로 불어넣어 합금괴(1)의 다공성을 증가시킨다.Uniformly mix and melt a certain amount of zirconium powder, silicon powder, iron powder, etc. forming the alloying material, mold the alloy melt, and inject an inert gas such as nitrogen or argon into the alloy melt to be porous to make it aluminum. The porous alloy ingot 1 having a specific gravity smaller than that of the melt 2 is formed. The porous alloy ingot 1 is blown with a large amount of inert gas at a high pressure into the alloy melt during the molding process so that the specific gravity is smaller than that of the aluminum melt 2, thereby increasing the porosity of the alloy ingot 1.

용해로(3)에 알루미늄 괴를 넣고 고온으로 가열하여 용해시키므로서 알루미늄 용융물(2)을 형성한다. 상기 알루미늄 용융물(2)에 상기한 방법으로 다공질화된 합금괴(1)를 일정 함량 투입한다. 알루미늄 용융물(2)에 투입된 다공질 합금괴(1)는 상기 알루미늄 용융물(2)의 표면을 부유하며, 다공질 합금괴(1)가 부유하는 동안 알루미늄 용융물(2)에 일정한 속도로 용해된다. 알루미늄 용융물(2)의 표면에서 일정한 속도로 용해된 다공질 합금괴(1)의 조성 성분은 상기 알루미늄 용융물(2)의 상부에서 하부로 서서히 분산된다.An aluminum ingot is placed in the melting furnace 3 and heated to a high temperature to dissolve the aluminum melt 2. A predetermined amount of the porous alloy ingot 1 is introduced into the aluminum melt 2 as described above. The porous alloy ingot 1 introduced into the aluminum melt 2 floats the surface of the aluminum melt 2 and dissolves in the aluminum melt 2 at a constant rate while the porous alloy ingot 1 is suspended. The composition components of the porous alloy mass 1 dissolved at a constant rate on the surface of the aluminum melt 2 are gradually dispersed from the top of the aluminum melt 2 to the bottom thereof.

따라서 용해로 내부에 합금 재료를 교반하기 위한 금속 재질의 교반기(4)가 형성되지 않으므로 교반기(4)의 금속 성분이 알루미늄 용융물(2)로 혼합되지 않는다.Therefore, since the metal stirrer 4 for stirring the alloying material is not formed inside the melting furnace, the metal component of the stirrer 4 is not mixed into the aluminum melt 2.

다공질 합금괴(1)를 형성하는 지르코늄, 실리콘, 철 등의 조성 성분의 비중이 알루미늄 용융물(2)보다 크기 때문에 알루미늄 용융물(2)을 금속 재질의 교반기(4)로 교반하지 않아도 상기 다공질 합금괴(1)의 조성 성분이 그 자체 무게에 의하여 상기 알루미늄 용융물(2)의 상부에서 하부로 서서히 분산되므로 알루미늄 합금 용융물이 정확한 함량으로 균일하게 조성된다.Since the specific gravity of the compositional components such as zirconium, silicon, iron, etc. forming the porous alloy ingot 1 is greater than that of the aluminum melt 2, the porous alloy ingot does not need to be stirred with the metal stirrer 4. Since the composition component of (1) is gradually dispersed from the upper portion to the lower portion of the aluminum melt 2 by its own weight, the aluminum alloy melt is uniformly formed in the correct content.

알루미늄 용융물(2)의 표면에서 부유하는 다공질 합금괴(1)의 용해가 완료되는 시점이 알루미늄 합금 용융물이 정확한 함량으로 균일하게 조성되는 시점이므로 다공질 합금괴(1)의 용해가 완료되면 조성된 알루미늄 합금 용융물을 원재료로 사용하여 가공 송전선용 알루미늄 합금 선재를 제조한다.When the melting of the porous alloy ingots 1 floating on the surface of the aluminum melt 2 is completed, the time when the aluminum alloy melt is uniformly formed with the correct content is completed. The alloy melt is used as a raw material to produce aluminum alloy wire for overhead transmission lines.

본 발명에 의한 알루미늄 합금 용융물의 조성 방법은 주형 과정에서 불활성 기체를 불어넣어 다공질화된 합금괴를 용해로 내부의 알루미늄 용융물에 투입하여 부유시키는 구성으로 다공질 합금괴의 조성 성분이 상기 알루미늄 용융물의 상부에서 하부로 균일하게 분산되게 하여 알루미늄 합금 용융물을 정확한 함량으로 균일하게 조성하므로서 상기 알루미늄 합금 용융물로 제조되는 가공 송전선용 알루미늄 합금 선재의 전기적 기계적 특성을 대폭 향상시키는 효과가 있다.In the composition method of the aluminum alloy melt according to the present invention, the inert gas is blown during the casting process, and the porous alloy ingot is introduced into the aluminum melt in the melting furnace to float. The composition of the porous alloy ingot is formed at the top of the aluminum melt. By uniformly dispersing the lower portion of the aluminum alloy melt in an accurate amount, it is possible to greatly improve the electrical and mechanical properties of the aluminum alloy wire for the overhead transmission line manufactured from the aluminum alloy melt.

Claims (1)

가공 송전선용 내열 알루미늄 합금 선재를 제조하기 위하여 용해로(3) 내부의 알루미늄 용융물(2)에 합금 재료를 투입 용해하여 알루미늄 합금 용융물을 형성하는 과정에 있어서,In the process of forming an aluminum alloy melt by injecting and melting an alloying material into the aluminum melt (2) in the melting furnace (3) to manufacture a heat-resistant aluminum alloy wire for the overhead transmission line, 알루미늄 용융물(2)보다 비중이 작아지도록 주형 과정에서 불활성 기체를 불어넣어 다공질화된 합금괴(1)를 용해로(3) 내부의 알루미늄 용융물(2)에 투입하여 용해시키는 것을 특징으로 하는 가공 송전선용 알루미늄 합금 선재의 제조 방법.For overhead power transmission line, characterized in that the inert gas is blown during the molding process so that the specific gravity is smaller than that of the aluminum melt (2), and the porous alloy mass (1) is introduced into the aluminum melt (2) in the melting furnace (3) to dissolve. Method of manufacturing aluminum alloy wires.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100721635B1 (en) * 2006-02-03 2007-05-23 엘에스전선 주식회사 Method of manufacturing trapezoidal shaped xtacir, xtacir and overhead transmission line manufactured using the same
CN104625026A (en) * 2015-02-06 2015-05-20 秦皇岛开发区美铝合金有限公司 A356.2 aluminum alloy casting method

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JPH03211245A (en) * 1990-01-12 1991-09-17 Showa Alum Corp Manufacture of oxide dispersed aluminum alloy by using high energy density heat source
KR910016949A (en) * 1990-03-07 1991-11-05 마르셀 벙리어 Container for adding light metals to molten aluminum alloys

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03211245A (en) * 1990-01-12 1991-09-17 Showa Alum Corp Manufacture of oxide dispersed aluminum alloy by using high energy density heat source
KR910016949A (en) * 1990-03-07 1991-11-05 마르셀 벙리어 Container for adding light metals to molten aluminum alloys

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100721635B1 (en) * 2006-02-03 2007-05-23 엘에스전선 주식회사 Method of manufacturing trapezoidal shaped xtacir, xtacir and overhead transmission line manufactured using the same
CN104625026A (en) * 2015-02-06 2015-05-20 秦皇岛开发区美铝合金有限公司 A356.2 aluminum alloy casting method
CN104625026B (en) * 2015-02-06 2017-02-01 秦皇岛开发区美铝合金有限公司 A356.2 aluminum alloy casting method

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