KR100256760B1 - Aluminium alloy for automobile frame - Google Patents

Aluminium alloy for automobile frame Download PDF

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Publication number
KR100256760B1
KR100256760B1 KR1019950035217A KR19950035217A KR100256760B1 KR 100256760 B1 KR100256760 B1 KR 100256760B1 KR 1019950035217 A KR1019950035217 A KR 1019950035217A KR 19950035217 A KR19950035217 A KR 19950035217A KR 100256760 B1 KR100256760 B1 KR 100256760B1
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frame
aluminum alloy
alloy composition
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strength
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KR1019950035217A
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Korean (ko)
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KR970021345A (en
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한도석
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정몽규
현대자동차주식회사
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    • 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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Body Structure For Vehicles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: An aluminum alloy composition for automobile frame is provided, which has superior physical properties such as strength, toughness and corrosion resistance, substantially decreases production cost by using low cost materials, and can be applied to a component for gravity casting due to superior fluidity. CONSTITUTION: The aluminum alloy composition for gravity casting comprises 8.0 to 9.0 wt.% of Si, 0.2 wt.% or less of Cu, 0.4 to 0.6 wt.% of Mg, 0.5 to 0.7 wt.% of Mn, 0.2 wt.% or less of Fe, 0.3 wt.% or less of Zn, 0.05 wt.% or less of Ti, 0.05 to 0.40 wt.% of Sb and 88.55 to 91.05 wt.% of Al. The aluminum alloy composition can be used usefully as a material for a side frame and a cross frame of various automobile frames including H type frame, X type frame, back-bone type frame, platform type frame, truss type frame and mono-coque type frame due to superior physical properties such as strength, toughness and corrosion resistance. Furthermore, the aluminum alloy composition can be also used as a component material in which superior physical properties are required in terms of strength, toughness and corrosion resistance besides an automobile frame.

Description

[발명의 명칭][Name of invention]

자동차 프레임용 알루미늄합금 조성물Aluminum alloy composition for automobile frame

[발명의 상세한 설명]Detailed description of the invention

[산업상 이용분야][Industrial use]

본 발명은 알루미늄합금에 관한 것으로서, 더욱 상세하게는 물성이 우수한 자동차 프레임용 알루미늄합금 조성물에 관한 기술이다.The present invention relates to an aluminum alloy, and more particularly to a technique related to an aluminum alloy composition for automobile frames excellent in physical properties.

[종래기술][Private Technology]

자동차의 프레임은 자동차가 주행 중에 받은 노면으로부터의 충격이나 화물의 하중 등에 의하여 생기는 굽음, 비틀림, 인장, 진동 등에 충분히 견딜수 있는 강도와 강성을 지녀야하며 또한 가벼워야 한다. 이울러 상기와 같은 물성적인 우수함과 동시에 자동차 프레임은 그 제작에 있어서 작업성 그리고 내구성 및 내식성이 우수하여야 한다.The frame of the vehicle must be strong and rigid enough to withstand bending, torsion, tension, vibration, etc. caused by the impact from the road surface or the load of the cargo received while driving. In addition to the above excellent physical properties, the automobile frame should be excellent in workability and durability and corrosion resistance in the production.

종래에는 이와 같은 프레임으로의 물성 및 조건을 만족시키기 위해 하기한 조성으로 이루어진 알루미늄합금을 사용하여 프레임을 제조하여 왔다.Conventionally, in order to satisfy the properties and conditions of such a frame, a frame has been manufactured using an aluminum alloy having the following composition.

그러나 상기와 같은 조성으로 이루어진 알루미늄합금을 사용하여 만들어진 프레임은 인장강도, 항복강도, 내식성 등의 물성이 나쁘다는 문제점이 있다.However, a frame made of the aluminum alloy having the composition described above has a problem in that physical properties such as tensile strength, yield strength and corrosion resistance are bad.

또한 합금조성물 성분 중 가격이 고가인 Ti의 사용량이 많아 생산원가 측면에서도 상업적 경쟁력이 뒤떨어진다는 문제점이 있다.In addition, there is a problem that commercial use is inferior in terms of production cost due to the large amount of Ti, which is expensive in the alloy composition.

[본 발명이 해결하려 하는 과제][PROBLEMS TO BE SOLVED BY THE INVENTION]

본 발명은 상기와 같은 종래기술의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 첫째 강도, 인성, 내식성 등의 물성이 우수한 자동차 프레임용 알루미늄합금 조성물을 제공하고, 둘째 저가인 재료를 사용하므로써 생산원가를 획기적으로 줄일 수 있는 자동차 프레임용 알루미늄합금 조성물을 제공하고, 세째 유동성이 우수하여 중력주조용 부품에도 적용가능한 작업성이 우수한 알루미늄합금 조성물을 제공하기 위함이다.The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to provide an aluminum alloy composition for automobile frames excellent in physical properties such as strength, toughness, corrosion resistance, etc. Therefore, to provide an aluminum alloy composition for automobile frames that can significantly reduce the production cost, and to provide an aluminum alloy composition excellent in workability, which is also excellent in fluidity and applicable to gravity casting parts.

[과제를 해결하기 위한 수단][Means for solving the problem]

상기와 같은 본 발명의 목적을 달성하기 위하여 본 발명은 자동차 프레임용 알루미늄합금 조성물에 있어서, Sb를 더욱 포함하는 자동차 프레임용 알루미늄합금 조성물을 제공한다. 이때 상기한 Sb는 전체알루미늄합금 조성물에 대하여 0.05~0.40 중량%, 더욱 바람직하게는 0.10~0.20중량 %를 포함하는 것이 바람직하다.In order to achieve the object of the present invention as described above, the present invention provides an aluminum alloy composition for an automobile frame, further comprising Sb. At this time, Sb is preferably 0.05 to 0.40% by weight, more preferably 0.10 to 0.20% by weight relative to the total aluminum alloy composition.

또한 본 발명은 하기한 조성으로 이루어진 알루미늄합금 조성물을 제공한다.The present invention also provides an aluminum alloy composition consisting of the following composition.

상기한 본 발명에 있어서, 상기한 Sb는 0.10-0.20중량%인 것이 바람직하다.In the present invention described above, the Sb is preferably 0.10-0.20% by weight.

[작용][Action]

이하 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail.

상기한 바와 같이 본 발명의 자동차 프레임용 알루미늄합금 조성물은 종래의 자동차 프레임용 소재로 사용되어오던 알루미늄합금 조성물에 Sb를 더욱 첨가하여 강도 및 내구성을 향상시켰다. 이와 같은 본 발명의 알루미늄합금 조성물은 Sb를 첨가하므로써 인장강도, 항복강도, 신율, 충격강도, 피로강도 등의 물성이 향상되었을 뿐만 아니라 종래의 알루미늄합금 조성물에서 사용되어오던 가격이 비싼 Ti의 첨가량을 줄일 수 있어 생산원가의 절감을 가져올 수 있다. 이때 Sb의 첨가량은 전체 알루미늄합금 조성물 중에 0.05-0.40 중량% 첨가하는 것이 바람직하며, 0.10-0.20인 것이 더욱 바람직하다. Sb의 첨가량이 0.05중량% 미만일 경우에는 강도, 내구성 등 물성의 향상효과가 미미하고 0.40중량%를 초과할 경우에는 첨가량의 증가에 따른 더 이상의 강도, 내구성 향상 효과가 미미해져 첨가에 다른 물성의 개선 효과에 의미가 없게 된다.As described above, the aluminum alloy composition for an automobile frame of the present invention further improves strength and durability by further adding Sb to an aluminum alloy composition which has been used as a conventional vehicle frame material. The aluminum alloy composition of the present invention has not only improved physical properties such as tensile strength, yield strength, elongation, impact strength, and fatigue strength by adding Sb, but also increases the amount of expensive Ti used in conventional aluminum alloy compositions. It can reduce the production cost. In this case, the amount of Sb added is preferably 0.05-0.40% by weight in the total aluminum alloy composition, more preferably 0.10-0.20. When the amount of Sb added is less than 0.05% by weight, the effect of improving the physical properties such as strength and durability is insignificant, and when the amount of Sb is exceeded by 0.40% by weight, further strength and durability improvement effects are insignificant due to the increase in the amount of addition. The effect is meaningless.

상기한 본 발명의 알루미늄합금 조성비는 Si 8.0-9.0 중량%, Cu 0.2중량%이하, Mg 0.4-0.6중량%, Mn 0.5-0.7중량%, Fe 0.2중량%이하, Zn 0.3중량%이하, Ti 0.05 중량%이하, Sb 0.05-0.40중량%, Al 91.05-88.55중량%로 이루어지는 것이 더욱 바람직하다.The aluminum alloy composition ratio of the present invention described above is Si 8.0-9.0 wt%, Cu 0.2 wt% or less, Mg 0.4-0.6 wt%, Mn 0.5-0.7 wt%, Fe 0.2 wt% or less, Zn 0.3 wt% or less, Ti 0.05 It is more preferable that it is made up by weight% or less, Sb 0.05-0.40 weight%, Al 91.05-88.55 weight%.

이와 같은 조성비를 갖을 경우 알루미늄 합금은 강도, 내구성의 측면에서 가장 우수하다.With such a composition ratio, aluminum alloy is the best in terms of strength and durability.

또한 상기한 본 발명에 따라 제조된 알루미늄합금은 유동성이 우수하여 중력주조용 부품에 적합한 작업성이 뛰어난 합금이다.In addition, the aluminum alloy prepared according to the present invention is an alloy excellent in workability and excellent workability suitable for gravity casting parts.

[실시예]EXAMPLE

이하 본 발명의 바람직한 실시예 및 비교예를 기재한다. 그러나 하기한 실시예는 본 발명의 구성을 설명하고 본 발명의 효과를 입증하기 위한 본 발명의 일실시예일 뿐 본 발명이 하기한 실시예에 한정되는 것은 아니다.Hereinafter, preferred examples and comparative examples of the present invention are described. However, the following examples are only examples of the present invention for explaining the structure of the present invention and to demonstrate the effects of the present invention, and the present invention is not limited to the following examples.

[실시예]EXAMPLE

하기한 조성을 갖는 합금을 통상적인 알루미늄 합금의 제조 법에 따라 제조하였다.Alloys having the following compositions were prepared according to the conventional method for producing aluminum alloys.

[비교예][Comparative Example]

하기한 조성을 갖는 합금을 통상의 알루미늄 합금의 제조 방법에 따라 제조하였다.An alloy having the following composition was produced according to a conventional method for producing an aluminum alloy.

상기한 실시예와 비교예에 따라 제조된 합금의 인장강도, 항복강도, 및 신율을 통상의 방법으로 측정하여 그 결과를 하기한 표에 나타내었다.Tensile strength, yield strength, and elongation of the alloys prepared according to the above Examples and Comparative Examples were measured by conventional methods, and the results are shown in the following table.

[표 ]Table

[효과][effect]

상기한 바와 같이 본 발명의 실시예에 따라 제조된 자동차 프레임용 알루미늄합금은 비교예에 의하여 제조된 알루미늄합금에 비하여 인장강도인 경우 10%, 항복강도인 경우 13%, 그리고 신율인 경우 100% 개선된 우수한 물성을 갖고 있음을 알 수 있다.As described above, the aluminum alloy for automobile frame manufactured according to the embodiment of the present invention is 10% for tensile strength, 13% for yield strength, and 100% for elongation compared to the aluminum alloy prepared by the comparative example. It can be seen that it has excellent physical properties.

따라서 본원 발명에 따라 제조된 알루미늄합금 조성물은 강도, 인성, 내식성 등의 물성이 우수하여 자동차의 H형 프레임, X형 프레임, 백본형 프레임, 플랫포옴형 프레임, 트러스트형 프레임, 모노코크형 프레임등 다양한 프레임의 사이드 프레임, 크로스 프레임 등의 소재로서 유용하게 사용될 수 있다. 또한 본 발명은 자동차 프레임 이외에도 본 발명과 같이 강도, 인성, 내식성 등에 있어서 우수한 물성을 요구하는 부품의 소재로서 사용될 수 있다.Therefore, the aluminum alloy composition prepared according to the present invention is excellent in physical properties such as strength, toughness, corrosion resistance, H-frame, X-frame, backbone frame, platform form frame, trust frame, monocoque frame, etc. It can be usefully used as a material of a side frame, a cross frame and the like. In addition to the automobile frame, the present invention can be used as a material for parts that require excellent physical properties in strength, toughness, corrosion resistance and the like as the present invention.

Claims (1)

하기 조성으로 이루어진 중력주조용 알루미늄합금 조성물 :Gravity casting aluminum alloy composition consisting of: Si 8.0~9.0 중량% ; Cu 0.2 중량% 이하; Mg 0.4~0.6 중량% ; Mn 0.5~0.7 중량% 이하; Fe 0.2 중량% 이하; Zn 0.3 중량% 이하; Ti 0.05 중량% 이하; Sb 0.05~0.40 중량%; 및 Al 88.55~91.05중량%.Si 8.0-9.0 weight%; 0.2 wt% or less of Cu; Mg 0.4-0.6 weight%; Mn 0.5-0.7 wt% or less; Fe 0.2 wt% or less; Zn 0.3 wt% or less; Ti 0.05 wt% or less; Sb 0.05-0.40 weight percent; And Al 88.55-91.05% by weight.
KR1019950035217A 1995-10-12 1995-10-12 Aluminium alloy for automobile frame KR100256760B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912197A (en) * 2012-10-12 2013-02-06 宁波科达工贸有限公司 Aluminum-silicon-magnesium casting aluminum alloy and method for manufacturing same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63179041A (en) * 1987-01-20 1988-07-23 Showa Alum Corp Aluminum alloy for cylinder having excellent surface smoothness

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63179041A (en) * 1987-01-20 1988-07-23 Showa Alum Corp Aluminum alloy for cylinder having excellent surface smoothness

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912197A (en) * 2012-10-12 2013-02-06 宁波科达工贸有限公司 Aluminum-silicon-magnesium casting aluminum alloy and method for manufacturing same
CN102912197B (en) * 2012-10-12 2015-09-30 宁波科达工贸有限公司 A kind of aluminium silicon magnesium system cast aluminium alloy and preparation method thereof

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