KR20060014921A - Heat treatment method of aluminum extruding object and a aluminum extruding object manufacture by the heat treatment method - Google Patents

Heat treatment method of aluminum extruding object and a aluminum extruding object manufacture by the heat treatment method Download PDF

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KR20060014921A
KR20060014921A KR1020040063670A KR20040063670A KR20060014921A KR 20060014921 A KR20060014921 A KR 20060014921A KR 1020040063670 A KR1020040063670 A KR 1020040063670A KR 20040063670 A KR20040063670 A KR 20040063670A KR 20060014921 A KR20060014921 A KR 20060014921A
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aluminum
heat treatment
extrudate
temperature
heating
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KR100604592B1 (en
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하세홍
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신양금속공업 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
    • 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
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon

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  • Crystallography & Structural Chemistry (AREA)
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Abstract

본 발명은 알루미늄 압출물의 열처리 방법과 그 열처리 방법으로 제조된 알루미늄 압출물에 관한 것으로, 그 목적은 경량이되, 내구성 있는 금속제품을 널리 공급하는 것이다.The present invention relates to a heat treatment method of an aluminum extrudate and an aluminum extrudate produced by the heat treatment method, the object of which is to provide a lightweight, durable metal products widely.

이를 위한, 본 발명에 따른 알루미늄 압출물의 열처리 방법은;To this end, the heat treatment method of the aluminum extrudate according to the present invention;

알루미늄 압출물을 열처리 로에서 140℃이상 175℃이하의 온도로 13시간 30분 가열하는 열처리공정을 포함한다.And a heat treatment step of heating the aluminum extrudate at a temperature of 140 ° C. or more and 175 ° C. or less for 13 hours 30 minutes in a heat treatment furnace.

이에 따라, 본 발명에 따른 알루미늄 압출물에 의해, 자동차 부품등 경량이되, 내구성 있는 제품을 필요로 하는 기술분야에 널리 공급한 이점이 있다.Accordingly, the aluminum extrudate according to the present invention has the advantage of being widely supplied to the technical field requiring lightweight, durable products such as automobile parts.

알루미늄 압출물, 알루미늄 열처리Aluminum Extruded, Aluminum Heat Treatment

Description

알루미늄 압출물의 열처리 방법과 그 열처리 방법으로 제조된 알루미늄 압출물{ HEAT TREATMENT METHOD OF ALUMINUM EXTRUDING OBJECT AND A ALUMINUM EXTRUDING OBJECT MANUFACTURE BY THE HEAT TREATMENT METHOD }HEAT TREATMENT METHOD OF ALUMINUM EXTRUDING OBJECT AND A ALUMINUM EXTRUDING OBJECT MANUFACTURE BY THE HEAT TREATMENT METHOD}

도 1은 종래 알루미늄 압출물의 압출방법을 보인 공정 블럭도이고,1 is a process block diagram showing a conventional extrusion method of aluminum extrudates,

도 2는 종래의 열처리공정에서 사용된 원자재의 화학성분과 종래 열처리방법을 통해 생산된 압출물의 기계적강도를 보인 시험성적서이고,Figure 2 is a test report showing the mechanical strength of the raw materials used in the conventional heat treatment process and the mechanical strength of the extrudate produced by the conventional heat treatment method,

도 3은 본 발명에 따른 알루미늄 압출물의 열처리 방법을 발췌하여 보인 열처리 상태도이고,3 is a heat treatment state diagram showing an extract of the heat treatment method of the aluminum extrudate according to the present invention,

도 4는 본 발명에 따른 열처리방법을 통해 나타난 알루미늄 압출물의 기계적 강도를 보인 시험성적서이다.Figure 4 is a test report showing the mechanical strength of the aluminum extrudate shown through the heat treatment method according to the present invention.

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

1;알루미늄 압출공정 10;압출공정1; aluminum extrusion process 10; extrusion process

20;교정공정 30;열처리공정20; calibration process 30; heat treatment process

40;완제품 절단공정40; finished product cutting process

본 발명은 알루미늄 압출물에 관한 것으로 더욱 상세하게는 알루미늄 압출물을 열처리 로에서 140℃이상 175℃이하의 온도로 13시간 30분 가열하는 열처리공정을 포함하는 알루미늄 압출물의 열처리 방법과 그 열처리 방법으로 제조된 알루미늄 압출물에 관한 것이다.The present invention relates to an aluminum extrudate, and more particularly, to an aluminum extrudate heat treatment method and a heat treatment method comprising a heat treatment step of heating the aluminum extrudate in a heat treatment furnace at a temperature of 140 ℃ 175 ℃ 13 hours 30 minutes. It relates to a manufactured aluminum extrudate.

본 출원인은 도 1에 도시한 바와 같이, 압출공정(10), 교정공정(20), 열처리공정(30), 완제품 절단공정(40)으로 알루미늄을 압출하여 왔다.As shown in FIG. 1, the applicant has extruded aluminum into an extrusion process 10, a calibration process 20, a heat treatment process 30, and a finished product cutting process 40.

압출공정(10)은 알루미늄 원자재를 압출하기 용이한 온도로 예열하고, 마찬가지로 예열된 압출기(11)의 다이스(Dies)를 통과하며 소정형상의 단면을 갖는 알루미늄 압출물(2)(이하, "압출물"이라 칭한다,)을 뽑아 내는 공정이며, 이 압출물(2)은 냉각수(40~60℃)로 냉각한다.The extrusion process 10 preheats the aluminum raw material to a temperature which is easy to extrude, and similarly passes through the dies of the preheated extruder 11 and has an aluminum extrudate 2 having a predetermined cross section (hereinafter, "extruded"). Water), and this extrudate 2 is cooled by cooling water (40-60 degreeC).

교정공정(20)은 상기한 바와 같이, 길게 압출된 압출물(2)의 불량(예:캠버 (Camber), 벤트(Beant))을 교정기(21)로 교정하여 이 압출물(2)의 진직도를 유지할 수 있도록 하는 공정이다.As described above, the straightening process 20 corrects the defects (e.g., camber and vent) of the long extruded extrudate 2 with the calibrator 21 to correct the It is a process to maintain the straightness.

열처리공정(30)은 상기한 압출물(2) 자체의 경도를 향상시키도록 하는 목적으로 열처리 로(31)에서 시행하는 것이다.The heat treatment step 30 is performed in the heat treatment furnace 31 for the purpose of improving the hardness of the extrudate 2 itself.

그런 다음, 이 압출물(2)을 수요자가 소망하는 길이에 맞게 컷팅 머신(41)으로 절단하는 완제품 절단공정(40)에서 압출물(2)의 1차적인 가공이 완료되고, 이 압출물(2)을 포장하는 포장공정(50)을 끝으로 알루미늄 압출물(2) 완제품의 제조가 완료된다.Then, the primary processing of the extrudate 2 is completed in the finished product cutting process 40 of cutting the extrudate 2 into the cutting machine 41 to the desired length. 2) the end of the packaging process 50 for packaging the finished product of the aluminum extrudate (2) is completed.

여기서, 도 2에 도시한 바와 같이, 알루미늄 원자재는 97.5중량%의 알루미늄 과, 0.62중량%의 Si와, 0.31중량%의 Fe와, 0.21중량%의 Cu와, 0.02중량%의 Mn과, 1.1중량%의 Mg와, 0.18중량%의 Cr과, 0.02중량%의 Zn과, 0.04중량%의 Ti로 이루어진 Al-Mg-Si계열의 열처리용 알루미늄 합금인 A6061-T6이다.As shown in Fig. 2, the aluminum raw material is 97.5% by weight of aluminum, 0.62% by weight of Si, 0.31% by weight of Fe, 0.21% by weight of Cu, 0.02% by weight of Mn, and 1.1% by weight. A6061-T6, which is an Al-Mg-Si series heat treatment aluminum alloy composed of% Mg, 0.18 wt% Cr, 0.02 wt% Zn, and 0.04 wt% Ti.

이와 같은 비율로 이루어진 알루미늄 합금을 압출공정(10)에서 압출하고, 열처리 공정(30)의 열처리 로(31)에서 180℃의 온도로 8시간 ~ 9시간 30분을 가열하여 열처리하였다.The aluminum alloy formed in such a ratio was extruded in the extrusion process 10, and heat-treated by heating 8 hours to 9 hours 30 minutes at a temperature of 180 ° C. in the heat treatment furnace 31 of the heat treatment process 30.

상기한 바와 같이 본 출원인에 의해 시행되었던, 종래의 열처리방법으로는 도 2에 나타난 바와 같이, 인장강도(Tensile Strength) 값이 328 N/㎟로 나타나고, 내력(Internal Force)이 303 N/㎟, 연신율(Elongation)은 14%, 경도(Hardness)는 54~59HRB(로크웰경도)로 나타나는 것을 알 수 있다.("한국생활환경시험연구원" 시험성적서1)As described above, the conventional heat treatment method, which was carried out by the present applicant, as shown in FIG. 2, a tensile strength value of 328 N / mm 2 and an internal force of 303 N / mm 2, Elongation is 14% and Hardness is 54 ~ 59HRB (Rockwell hardness). (Research Report 1)

그러나, 이 압출물(2)의 경우, 자동차의 브레이크 계통의 주요부품으로 사용되기 때문에 사용자가 요구하는 기계적 강도에 미달되어 사용자들로부터 강도에 대한 신뢰도가 떨어지는 문제가 있었다.However, in the case of the extrudate 2, since it is used as a main part of the brake system of an automobile, there is a problem that the reliability of the strength is lowered from the users because it is less than the mechanical strength required by the user.

또한, 압출물의 전체적인 경도가 국부적으로 54~59HRB로 불균일하게 형성되어 사용자측에서 전수경도를 측정 후, 납품을 요구해 원가가 상승되고, 생산성이 저하되는 문제가 있었다.In addition, the overall hardness of the extrudate is locally formed non-uniformly 54 to 59 HRB, after measuring the total hardness on the user side, there is a problem that the cost is increased and the productivity is lowered due to the delivery.

본 발명은 상술한 바와 같은 종래의 문제점을 해결하기 위해 안출된 것으로서, 본 발명의 목적은 완성되는 제품의 중량을 경량화하되, 내구성 있는 제품을 통 해 신뢰도가 향상된 고강도 알루미늄 합금을 널리 공급하는데 있다.The present invention has been made to solve the conventional problems as described above, the object of the present invention is to provide a high-strength aluminum alloy with improved reliability through a durable product, while reducing the weight of the finished product.

이러한 목적을 달성하기 위한 본 발명은;The present invention for achieving this object is;

알루미늄 원자재를 알루미늄 압출기의 다이스를 통해 소정형상으로 압출하는 압출공정과, 상기 압출공정에서 압출된 알루미늄 압출물의 진직도를 교정하는 교정공정과, 상기 교정공정을 거친 알루미늄 압출물을 가열하는 열처리공정과, 상기 열처리공정을 통해 열처리된 알루미늄 압출물을 절단하는 완제품 절단공정으로 이루어진 알루미늄 압출물 제조방법에 관한 것으로,An extrusion process of extruding aluminum raw material into a predetermined shape through a die of an aluminum extruder, a calibration process of correcting the straightness of the aluminum extrudates extruded in the extrusion process, a heat treatment process of heating the aluminum extrudate after the calibration process; The present invention relates to a method for producing an aluminum extrudate, comprising a finished product cutting process of cutting the heat-treated aluminum extrudate.

상기 알루미늄 압출물 제조방법의 열처리공정은 상기 알루미늄 압출물을 열처리 로에서 140℃이상 175℃이하의 온도로 13시간 30분 가열하는 것을 특징으로 한다.The heat treatment step of the method for producing an aluminum extrudate is characterized in that the aluminum extrudate is heated in a heat treatment furnace at a temperature of more than 140 ℃ 175 ℃ 13 hours 30 minutes.

또한, 열처리공정은 상기 알루미늄 압출물의 온도를 상온에서 140℃가 되도록 2시간 동안 승온시키는 제 1가열단계와;In addition, the heat treatment process includes a first heating step of raising the temperature of the aluminum extrudate for 2 hours to be 140 ℃ at room temperature;

상기 제 1가열단계에서 승온된 알루미늄 압출물의 온도를 140℃가 유지되도록 가열하는 제 2가열단계와;A second heating step of heating the temperature of the aluminum extrudate heated in the first heating step to maintain 140 ° C .;

상기 제 2가열단계에서 140℃의 온도로 승온된 알루미늄 압출물의 경도가 증가되는 온도인 175℃가 되도록 2시간 30분 동안 승온시키는 제 3가열단계와;A third heating step of raising the temperature for 2 hours and 30 minutes so that the hardness of the aluminum extrudate heated to a temperature of 140 ° C. in the second heating step increases to 175 ° C .;

상기 제 3가열단계에서 175℃로 가열된 알루미늄 압출물을 175℃로 7시간 동안 가열하는 제 4가열단계로 이루어진 것을 특징으로 한다.The fourth heating step of heating the aluminum extrudate heated to 175 ℃ in the third heating step for 7 hours at 175 ℃.

또한, 본 발명은 화학성분이 97.5중량%의 알루미늄과, 0.62중량%의 Si와, 0.31중량%의 Fe와, 0.21중량%의 Cu와, 0.02중량%의 Mn과, 1.1중량%의 Mg와, 0.18중량%의 Cr과, 0.02중량%의 Zn과, 0.04중량%의 Ti로 이루어진 Al-Mg-Si계열의 A6061-T6 알루미늄 합금에 관한 것으로,In addition, the present invention has a chemical composition of 97.5% by weight of aluminum, 0.62% by weight of Si, 0.31% by weight of Fe, 0.21% by weight of Cu, 0.02% by weight of Mn, 1.1% by weight of Mg, Al-Mg-Si series A6061-T6 aluminum alloy consisting of 0.18% by weight of Cr, 0.02% by weight of Zn, and 0.04% by weight of Ti,

상기 열처리공정을 통해 407N/㎟ 이상 414 N/㎟이하의 인장강도와, 338N/㎟ 이상 372 N/㎟이하의 내력과, 18%~19%의 연신율과, 64HRB ~ 66HRB의 로크웰 경도값을 갖는 것을 특징으로 한다.Through the heat treatment process, it has a tensile strength of 407 N / mm 2 or more and 414 N / mm 2 or less, a yield strength of 338 N / mm 2 or more and 372 N / mm 2 or less, an elongation of 18% to 19%, and a Rockwell hardness value of 64HRB to 66HRB. It is characterized by.

이하, 첨부한 예시도를 참조하여 본 발명에 따른 알루미늄 압출물의 열처리 방법과, 그 열처리 방법으로 제조된 알루미늄 압출물 하나의 바람직한 실시예에 대해 상세히 설명한다.Hereinafter, with reference to the accompanying drawings illustrating a heat treatment method of the aluminum extrudate according to the present invention, and one preferred embodiment of the aluminum extrudate produced by the heat treatment method in detail.

도 3은 본 발명에 따른 알루미늄 압출물의 열처리 방법을 발췌하여 보인 열처리 상태도이고, 도 4는 본 발명에 따른 열처리방법을 통해 나타난 알루미늄 압출물의 기계적성질을 보인 시험성적서이다.(이하, 설명 편의상, 종래의 구성과 동일한 구성은 동일명칭과 동일부호를 붙여 설명하고, 상세한 설명에서의 압출물은 미도시됨)3 is a heat treatment state diagram showing the heat treatment method of the aluminum extrudate according to the present invention, Figure 4 is a test report showing the mechanical properties of the aluminum extrudate shown through the heat treatment method according to the present invention. The same configuration as in the description of the same name and the same reference numerals, the extrudate in the detailed description is not shown)

도 3을 참조하면, 본 발명에 따른 알루미늄 압출물의 열처리 방법은 상술한 열처리 공정(30)의 열처리 로(31)에서 140℃이상 175℃이하의 온도로 13시간 30분 가열하는 것을 특징으로 한다.Referring to Figure 3, the heat treatment method of the aluminum extrudate according to the present invention is characterized in that for 13 hours 30 minutes at a temperature of 140 ° C or more and 175 ° C or less in the heat treatment furnace 31 of the above-described heat treatment process (30).

또한, 이 열처리 방법은 크게 제 1가열단계(31a)와, 제 2가열단계(31b), 제 3가열단계(31c), 제 4가열단계(31d)로 이루어진다.In addition, this heat treatment method is largely composed of a first heating step 31a, a second heating step 31b, a third heating step 31c, and a fourth heating step 31d.

제 1가열단계(30a)는 열처리 로(31)에 알루미늄 압출물(미도시)(이하, "압출 물"이라 칭한다.)을 투입하고 나서, 이 압출물을 서서히 승온(140℃)시키는 단계로서, 후술하는 제 2, 3, 4가열단계(30b)(30c)(30d)에서의 열처리효율을 극대화하도록 점진적으로 승온시키는 것이다. 즉, 갑자기 높은 온도로 압출물을 가열하게 되면, 압출물 표면의 경도만 상승하게 되므로, 취성이 급증하는 문제가 있기 때문에, 열처리 로(31) 내의 온도가 140℃에 도달하기 까지 2시간이 소요되도록 천천히 승온시키면 압출물 내부까지 고르게 승온된다.The first heating step 30a is a step in which an aluminum extrudate (not shown) (hereinafter, referred to as "extruded water") is introduced into the heat treatment furnace 31, and then gradually heated up (140 ° C) of the extrudate. In order to maximize the heat treatment efficiency in the second, third, and fourth heating steps 30b, 30c, and 30d, which will be described later, the temperature is gradually increased. That is, suddenly heating the extrudate at a high temperature, since only the hardness of the extrudate surface rises, there is a problem that brittleness rapidly increases, it takes 2 hours until the temperature in the heat treatment furnace 31 reaches 140 ℃. If the temperature is raised as slowly as possible, the temperature rises evenly inside the extrudate.

이 제 1가열단계(30a)에서 소망하는 온도까지 압출물이 승온되고, 열처리 로(31) 내의 온도가 올라가면, 제 2가열단계(30b)가 이어진다.In the first heating step 30a, the extrudate is heated up to a desired temperature, and when the temperature in the heat treatment furnace 31 rises, the second heating step 30b is continued.

제 2가열단계(30b)는 제 1가열단계(30a)에서 승온된 온도인 140℃를 유지시켜 압출물의 경도와 강도를 1차적으로 높이므로서, 강인한 재질이 형성되도록 하는 것이다. 이 제 2가열단계(30b)의 소요시간도 2시간을 시행하는 것이 가장 바람직하다.The second heating step (30b) is to maintain a temperature of 140 ℃ the temperature heated in the first heating step (30a) to increase the hardness and strength of the extrudate primarily, so that a strong material is formed. Most preferably, the time required for the second heating step 30b is also performed for 2 hours.

이와 같이, 제 2가열단계(30b)를 통해 압출물의 온도가 1차적으로 140℃에 도달하면, 제 3가열단계(30c)가 이어진다.As such, when the temperature of the extrudate primarily reaches 140 ° C. through the second heating step 30b, the third heating step 30c is followed.

제 3가열단계(30c)는 1차적으로 제 1, 2가열단계(30a)(30b)에서 승온된 열처리 로(31)의 온도를 175℃로 한번 더 승온시켜 상술한 제 1가열단계(30a)에서 1차적으로 상승되어 있는 압출물(미도시)의 온도를 2차적으로 한번 더 열처리하는 것으로, 2시간 30분을 더 가열한다.In the third heating step 30c, the first heating step 30a is first performed by first raising the temperature of the heat treatment furnace 31 heated in the first and second heating steps 30a and 30b to 175 ° C. By further heat-treating the temperature of the extrudate (not shown), which is primarily elevated at, is further heated for 2 hours and 30 minutes.

이 제 3가열단계(30c)에서 압출물 내부까지 175℃로 승온되면, 이 승온된 온도인 175℃로 지속적인 가열이 이루어지도록 하는 제 4가열단계(30d)가 이어지는 데, 이 제 4가열단계(30d)는 175℃로 승온된 상태에서 7시간을 가열하여 본 발명에 따른 압출물의 강도가 극대하되는 것이다.When the temperature is raised to 175 ° C. from the third heating step 30c to the inside of the extrudate, the fourth heating step 30d for continuous heating to the elevated temperature of 175 ° C. is followed by the fourth heating step ( 30d) is heated for 7 hours in a state where the temperature is raised to 175 ° C to maximize the strength of the extrudate according to the present invention.

이와 같이, 본 발명에 따른 방법으로 열처리가 완료된 압출물을 상온(常溫)에서 서서히 냉각시키면 압출물의 강도가 높게 형성된다.As such, when the extrudate is heat-treated slowly at room temperature by the method according to the present invention, the strength of the extrudate is formed high.

상술한 제 1, 2, 3, 4가열단계(30a)(30b)(30c)(30d)에서의 설정온도 및 가열시간은 도시하지 않은 열처리 로(31)의 콘트롤러에 입력된 프로그램에 의해 전환되는 것으로, 설정온도와 설정시간의 오차가 거의 없다.The set temperature and heating time in the above-described first, second, third, and fourth heating stages 30a, 30b, 30c, 30d are switched by a program input to the controller of the heat treatment furnace 31 (not shown). There is almost no error between the set temperature and the set time.

본 발명에 따른 압출물의 원자재로 사용된 A6061-T6의 화학성분은 도 2에 나타난 바와 같이, 알루미늄 97.5중량%에 Si(규소)0.62중량%, Fe(철) 0.31중량%, Cu(구리) 0.21중량%, Mn(망간) 0.02중량%, Mg(마그네슘) 1.1중량%, Cr(크롬) 0.18중량%, Zn(아연) 0.02중량%와 0.04중량%의 Ti(티탄)로 종래와 동일하게 이루어진 것이다.(괄호 내의 수치는 JIS 규격에 따른 A6061-T6의 화학성분 데이터임.)As shown in Figure 2, the chemical composition of A6061-T6 used as a raw material of the extrudate according to the present invention is 97.5% by weight of aluminum, 0.62% by weight of Si (silicon), 0.31% by weight of Fe (iron), and Cu (copper) 0.21. Mg (manganese) 0.02% by weight, Mg (magnesium) 1.1% by weight, Cr (chromium) 0.18% by weight, Zn (zinc) 0.02% by weight and 0.04% by weight of Ti (titanium) in the same manner as before (The figures in parentheses are the chemical composition data of A6061-T6 according to JIS standard.)

이와 같은 비율의 원소들로 이루어진 본 발명의 압출물을 상술한 열처리공정(30)의 온도조건에서 열처리를 시행했을 때, 도 4에 도시한 바와 같은 기계적성질을 나타낸다.("한국생활환경시험연구원" 시험성적서2)When the extruded product of the present invention consisting of elements in such a ratio is subjected to heat treatment at the temperature condition of the above-described heat treatment step 30, the mechanical properties as shown in Fig. 4 are shown. "Test report 2)

다시 말해서, 본 발명에 따른 열처리방법을 거친 후, 인장강도는 407N/㎟ 이상 414 N/㎟이하의 값을 나타내고, 내력은 338N/㎟ 이상 372 N/㎟이하의 나타내며, 연신율은 18%~19%, 로크웰경도는 64HRB ~ 66HRB의 값을 가지므로서, 도 2에 나타난 종래의 열처리방법으로 제조된 압출물의 인장강도(Tensile Strength)와 내력, 연신율, 경도등의 기계적 강도가 월등하게 향상된 것을 알 수 있다.In other words, after the heat treatment method according to the present invention, the tensile strength exhibits a value of 407 N / mm 2 or more and 414 N / mm 2 or less, the proof strength is 338 N / mm 2 or more and 372 N / mm 2 or less, the elongation is 18% ~ 19 %, Rockwell hardness has a value of 64HRB ~ 66HRB, it can be seen that the mechanical strength, such as tensile strength and tensile strength (extension, elongation, hardness) of the extrudate produced by the conventional heat treatment method shown in FIG. Can be.

이와 같이, 본 발명에 따른 알루미늄 압출물의 열처리 방법과 그 열처리 방법으로 제조된 알루미늄 압출물에 따르면, 알루미늄 소재의 열처리 온도를 단계적으로 상승시켜 균일한 온도를 유지함으로써, 강도가 향상됨에 따라, 사용자들의 신뢰를 얻은 이점이 있다.Thus, according to the heat treatment method of the aluminum extrudate according to the present invention and the aluminum extrudate manufactured by the heat treatment method, by increasing the heat treatment temperature of the aluminum material step by step to maintain a uniform temperature, as the strength is improved, There is an advantage gained trust.

또한, 알루미늄 특유의 경량이되, 강인한 재질을 필요로 하는 자동차 분야에서 그 제품의 우수성을 인정받고 있다.In addition, it is recognized for the superiority of the product in the automotive field that requires a unique lightweight and tough material.

본 발명은 상술한 특정 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 용이하게 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 본 발명 청구항의 기재 범위 내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and can be easily modified by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims of the present invention.

이상에서 상세하게 설명한 바와 같이, 본 발명에 따르면, 완성되는 제품의 중량을 경량화하되, 내구성 있는 제품을 통해 신뢰도가 향상된 고강도 합금을 널리 공급한 효과가 있다.As described in detail above, according to the present invention, while reducing the weight of the finished product, there is an effect of widely supplying a high strength alloy with improved reliability through a durable product.

또한, 알루미늄 특유의 경량이면서 철강제품 이상의 강인한 재질을 필요로 하는 자동차 분야에서 그 제품의 우수성을 인정받으므로서, 사용자들에게 신뢰를 얻은 효과가 있다.In addition, it is recognized that the superiority of the product in the automotive field that requires a tough material unique to aluminum and more than steel products, there is an effect that has earned the trust of users.

Claims (3)

알루미늄 원자재를 알루미늄 압출기의 다이스를 통해 소정형상으로 압출하는 압출공정과, 상기 압출공정에서 압출된 알루미늄 압출물을 가열하는 열처리공정과, 상기 열처리공정을 통해 열처리된 알루미늄 압출물의 진직도를 교정하는 교정공정과, 상기 교정공정을 거친 알루미늄 압출물을 절단하는 완제품 절단공정으로 이루어진 알루미늄 압출물 제조방법에 있어서,Extrusion process of extruding aluminum raw material into a predetermined shape through a die of an aluminum extruder, a heat treatment process for heating the aluminum extrudate extruded in the extrusion process, and calibration for correcting the straightness of the aluminum extrudate heat-treated through the heat treatment process In the aluminum extrusion product manufacturing method comprising a process, and a finished product cutting step of cutting the aluminum extrudate after the calibration process, 상기 알루미늄 압출공정의 열처리공정은 상기 알루미늄 압출물을 열처리 로 에서 140℃이상 175℃이하의 온도로 13시간 30분 가열하는 것을 특징으로 하는 알루미늄 압출물의 열처리 방법.The heat treatment step of the aluminum extrusion process is a heat treatment method of the aluminum extrudates, characterized in that for heating the aluminum extrudate at a temperature of more than 140 ℃ 175 ℃ 13 hours 30 minutes. 제 1항에 있어서,The method of claim 1, 상기 열처리공정은 상기 알루미늄 압출물의 온도를 상온에서 140℃가 되도록 2시간 동안 승온시키는 제 1가열단계와;The heat treatment process includes a first heating step of raising the temperature of the aluminum extrudate for 2 hours to be 140 ℃ at room temperature; 상기 제 1가열단계에서 승온된 알루미늄 압출물의 온도를 140℃가 유지되도록 가열하는 제 2가열단계와;A second heating step of heating the temperature of the aluminum extrudate heated in the first heating step to maintain 140 ° C .; 상기 제 2가열단계에서 140℃의 온도로 승온된 알루미늄 압출물의 경도가 증가되는 온도인 175℃가 되도록 2시간 30분 동안 승온시키는 제 3가열단계와;A third heating step of raising the temperature for 2 hours and 30 minutes so that the hardness of the aluminum extrudate heated to a temperature of 140 ° C. in the second heating step increases to 175 ° C .; 상기 제 3가열단계에서 175℃로 가열된 알루미늄 압출물을 175℃로 7시간 동안 가열하는 제 4가열단계로 이루어진 것을 특징으로 하는 알루미늄 압출물의 열처 리 방법.And a fourth heating step of heating the aluminum extrudate heated to 175 ° C. in the third heating step at 175 ° C. for 7 hours. 화학성분이 97.5중량%의 알루미늄과, 0.62중량%의 Si와, 0.31중량%의 Fe와, 0.21중량%의 Cu와, 0.02중량%의 Mn과, 1.1중량%의 Mg와, 0.18중량%의 Cr과, 0.02중량%의 Zn과, 0.04중량%의 Ti로 이루어진 Al-Mg-Si계열의 A6061-T6 알루미늄 합금에 있어서,The chemical composition is 97.5 weight percent aluminum, 0.62 weight percent Si, 0.31 weight percent Fe, 0.21 weight percent Cu, 0.02 weight percent Mn, 1.1 weight percent Mg, 0.18 weight percent Cr In the Al-Mg-Si series A6061-T6 aluminum alloy consisting of 0.02% by weight of Zn and 0.04% by weight of Ti, 상기 제 1항의 열처리공정을 통해 407N/㎟ 이상 414 N/㎟이하의 인장강도와, 338N/㎟ 이상 372 N/㎟이하의 내력과, 18%~19%의 연신율과, 64HRB ~ 66HRB의 로크웰 경도값을 갖는 것을 특징으로 하는 알루미늄 압출물.Tensile strength of 407 N / mm 2 or more and 414 N / mm 2 or less through the heat treatment process of claim 1, tensile strength of 338 N / mm 2 or more and 372 N / mm 2 or less, elongation of 18% to 19%, and Rockwell hardness of 64HRB to 66HRB Aluminum extrudate, characterized in that it has a value.
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CN103556089A (en) * 2013-10-28 2014-02-05 哈尔滨电机厂有限责任公司 Process for heat treatment of collecting ring aluminum fan blades of turbine generator
CN109321766A (en) * 2018-10-22 2019-02-12 昆明理工大学 A kind of aluminium-air cell anode material and preparation method thereof

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CN103556089A (en) * 2013-10-28 2014-02-05 哈尔滨电机厂有限责任公司 Process for heat treatment of collecting ring aluminum fan blades of turbine generator
CN109321766A (en) * 2018-10-22 2019-02-12 昆明理工大学 A kind of aluminium-air cell anode material and preparation method thereof
CN109321766B (en) * 2018-10-22 2021-02-05 昆明理工大学 Aluminum-air battery anode material and preparation method thereof

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