KR20200021142A - Method of manufacturing vehicle chassis part made of aluminum alloy - Google Patents

Method of manufacturing vehicle chassis part made of aluminum alloy Download PDF

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KR20200021142A
KR20200021142A KR1020180096529A KR20180096529A KR20200021142A KR 20200021142 A KR20200021142 A KR 20200021142A KR 1020180096529 A KR1020180096529 A KR 1020180096529A KR 20180096529 A KR20180096529 A KR 20180096529A KR 20200021142 A KR20200021142 A KR 20200021142A
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South Korea
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aluminum alloy
jig
alloy material
chassis part
manufacturing
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KR1020180096529A
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Korean (ko)
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권순일
유아미
이명환
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주식회사 동서기공
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/12—Straightening vehicle body parts or bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/14—Machines with evacuated die cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The present invention relates to a manufacturing method of an automobile chassis part of an aluminum alloy material using high-vacuum high-pressure casting. The manufacturing method comprises: a step of forming an automobile chassis part of an aluminum alloy material by high-vacuum high-pressure casting; a step of heat-treating the formed automobile chassis part; and a step of correcting the heat-treated automobile chassis part. The correcting step is achieved by interposing the heat-treated chassis part between a fixed jig and a movable jig between which a forming space of the automobile chassis part is formed to combine the fixed jig and the movable jig for a prescribed period of time under a prescribed temperature. Accordingly, mechanical properties of an automobile chassis part of an aluminum alloy material can be improved by heat treatment, and a twisting phenomenon occurring in a heat treatment process can be corrected to the original part shape by the correction which is a subsequent process. Consequently, a strength condition generally required as a chassis part can be satisfied while applying an aluminum alloy material as an automobile chassis part.

Description

알루미늄합금소재 자동차 차체부품의 제조방법{METHOD OF MANUFACTURING VEHICLE CHASSIS PART MADE OF ALUMINUM ALLOY}Manufacturing method of automobile body parts of aluminum alloy material {METHOD OF MANUFACTURING VEHICLE CHASSIS PART MADE OF ALUMINUM ALLOY}

본 발명은 알루미늄합금소재의 자동차 차체부품을 제조하는 방법에 관한 것으로서, 보다 상세하게는 고진공 고압주조를 이용한 알루미늄합금소재 자동차 차체부품의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing automotive body parts of aluminum alloy material, and more particularly to a method for manufacturing automotive body parts of aluminum alloy material using high vacuum high pressure casting.

최근의 소재기술의 발달과 차체 경량화의 요구에 따라 알루미늄합금소재의 자동차 차체부품이 개발되고 있으며, 특히 고진공 고압주조를 이용한 제조공법이 활발하게 개발되고 있다.In accordance with the recent development of material technology and the demand for lighter body weight, automotive body parts of aluminum alloy materials have been developed. In particular, manufacturing methods using high vacuum and high pressure casting have been actively developed.

일반적으로 고압주조는 고온에서 고속, 고압으로 복잡, 정밀한 금형에 용탕을 충진시켜 고정도, 고강도의 주물을 단시간에 대량생산하는 주조방식이고, 특히 고진공 고압주조는 도 1에 도시된 바와 같이 금형을 합형하고 성형공간을 진공으로 만드는 사출준비 단계(a), 주탕 및 사출 단계(b), 응고 단계(c), 제품취출 단계(d) 및 스프레이 단계(e)로 구성된다.In general, high pressure casting is a casting method for mass production of high precision and high strength castings in a short time by filling molten metal with complex, precise molds at high temperature and high speed, and high pressure. It consists of an injection preparation step (a), a pouring and injection step (b), a solidification step (c), a product takeout step (d), and a spray step (e), which mold and mold the molding space into a vacuum.

문제는, 이러한 고진공 고압주조로 성형된 알루미늄합금소재는 여전히 기존의 스틸 내지 주철과 같은 강도가 달성되지 못하는 관계로 일반적으로 자동차 차체부품으로서 요구되는 조건에 부합하지 못한다는 문제가 있었다.
The problem is that the aluminum alloy material formed by such high vacuum high pressure casting still does not meet the conditions required for automobile body parts in general, since strength such as steel or cast iron is still not achieved.

[선행기술문헌] 특허등록 제10-1188450호 (등록일자: 2012.09.27.)[Previous Technical Document] Patent Registration No. 10-1188450 (Registration Date: September 27, 2012)

특허등록 제10-1359386호 (등록일자: 2014.01.29.)                   Patent Registration No. 10-1359386 (Registration Date: 2014.01.29.)

특허등록 제10-1694944호 (등록일자: 2017.01.04.)
Patent Registration No. 10-1694944 (Registration Date: 2017.01.04.)

따라서, 본 발명의 목적은 알루미늄합금소재의 자동차 차체부품을 개발하는 방안으로서 고진공 고압주조를 이용할 경우, 일반적으로 자동차 차체부품으로서 요구되는 강도 조건에 부합할 수 있도록 개선된 알루미늄합금소재 자동차 차체부품의 제조방법을 제공하는 데 있다.Accordingly, an object of the present invention is to develop an automotive alloy component of an aluminum alloy material, and when using high vacuum high pressure casting, it is generally possible to meet the strength condition required for an automotive alloy component. It is to provide a manufacturing method.

상기 목적을 달성하기 위해 본 발명은 알루미늄합금소재 자동차 차체부품의 제조방법에 있어서, 고진공 고압주조로 알루미늄합금소재의 자동차 차체부품을 성형하는 단계와, 성형된 자동차 차체부품을 열처리하는 단계와, 열처리된 자동차 차체부품을 교정하는 단계를 포함하되, 상기 교정하는 단계는, 상기 자동차 차체부품의 성형공간이 형성된 가동지그와 고정지그의 사이에 상기 열처리된 차체부품을 개재시켜 상기 가동지그와 고정지그를 일정한 온도 하에서 일정한 시간 동안 합형함으로써 달성되는 것을 특징으로 하는 알루미늄합금소재 자동차 차체부품의 제조방법을 제공한다.In order to achieve the above object, the present invention provides a method for manufacturing a vehicle body part of an aluminum alloy material, the step of molding a vehicle body part of the aluminum alloy material by high vacuum high pressure casting, the step of heat-treating the molded vehicle body parts, heat treatment Comprising a step of calibrating the vehicle body parts, wherein the step of calibrating, the movable jig and the fixing jig by interposing the heat treated body parts between the movable jig and the fixing jig in which the molding space of the vehicle body parts are formed. The present invention provides a method for manufacturing an automotive body part of an aluminum alloy material, which is achieved by molding for a certain time under a constant temperature.

여기서, 상기 가동지그와 고정지그는 구리(Cu)를 함유하는 고열전도성 금속재질로 이루어지고, 각기 열선이 삽입되어 온도제어가 이루어질 수 있도록 구비됨으로써, 상기 가동지그와 고정지그의 합형은 250~350℃의 온도조건에서 30초 이내의 시간동안 수행되도록 하는 방법을 취할 수도 있다.Here, the movable jig and the fixed jig is made of a high thermal conductivity metal material containing copper (Cu), and each of the movable jig and the fixed jig is formed so that the temperature control is inserted by inserting the heating wire, 250 ~ 350 It is also possible to take a method to be carried out for a time within 30 seconds at a temperature condition of ℃.

이 경우, 상기 가동지그와 고정지그는 구리(Cu), 베르늄동(BeCu), 구리텅스텐(WCu) 중의 어느 하나로 이루어진 것일 수 있다.In this case, the movable jig and the fixed jig may be made of any one of copper (Cu), berylnium copper (BeCu), and copper tungsten (WCu).

이상과 같이 본 발명에 따른 알루미늄합금소재 자동차 차체부품의 제조방법에 의하면, 고진공 고압주조된 알루미늄합금소재의 자동차 차체부품을 열처리를 통해 기계적 특성을 향상시킬 수 있음은 물론, 열처리 과정에서 발생하게 되는 뒤틀림 현상은 후속공정인 교정을 통해 원래의 부품 형상으로 바로잡아줄 수 있으므로, 결국 알루미늄합금소재를 자동차 차체부품으로 적용하면서도 일반적으로 차체부품으로서 요구되는 강도 조건을 만족시킬 수 있다.According to the manufacturing method of the aluminum alloy material automotive body parts according to the present invention as described above, the mechanical properties of the automotive body parts of the high-pressure high-pressure cast aluminum alloy material can be improved through heat treatment, as well as occurring during the heat treatment process Since the warpage phenomenon can be corrected to the original part shape through the subsequent process of calibration, it is possible to apply the aluminum alloy material as a vehicle body part while satisfying the strength condition generally required as the body part.

특히, 본 발명은 알루미늄합금소재의 특성상 열처리에 따른 뒤틀림(변형)을 바로잡아주기 위한 최적화된 교정 방법을 제공하는바, 고열전도성 금속재질의 가동지그와 고정지그를 이용하여 뒤틀린 차체부품을 개재시킨 상태에서 250~350℃의 일정한 온도 하에서 30초 이내의 일정한 시간 동안 합형시키는 공정을 개발해냄으로써 종래 달성하지 못하였던 고강도의 알루미늄합금소재 자동차 차체부품을 제공할 수 있게 하였다는 데 큰 의의가 있다.In particular, the present invention provides an optimized calibration method for correcting the distortion (deformation) due to the heat treatment due to the characteristics of the aluminum alloy material bar interposed between the twisted body parts using a movable jig and a fixing jig of high thermal conductivity metal material Under the constant temperature of 250 ~ 350 ℃ in the state, by developing a process for forming a certain time within 30 seconds, it is significant that it was possible to provide a high-strength aluminum alloy material automotive body parts that could not be achieved conventionally.

도 1은 종래의 고진공 고압주조를 설명한 개략도,
도 2는 본 발명의 실시예에 따른 알루미늄합금소재 자동차 차체부품의 제조방법을 도시한 순서도,
도 3은 도 2의 제조방법을 구성하는 열처리 단계까지 수행된 알루미늄합금소재의 자동차 차체부품을 도시한 사시도,
도 4는 도 3의 자동차 차체부품에 도 2의 제조방법을 구성하는 교정 단계가 적용되는 모습을 도시한 개략도,
도 5 및 도 6은 도 4의 교정 단계가 수행되는 교정기의 작동 전, 후의 모습을 도시한 사시도이다.1 is a schematic diagram illustrating a conventional high vacuum high pressure casting,
Figure 2 is a flow chart showing a method of manufacturing a vehicle body parts aluminum alloy material according to an embodiment of the present invention,
3 is a perspective view illustrating a vehicle body part of an aluminum alloy material which is performed until the heat treatment step constituting the manufacturing method of FIG.
4 is a schematic view showing a state in which the calibration step constituting the manufacturing method of Figure 2 is applied to the vehicle body parts of Figure 3,
5 and 6 are perspective views showing the state before and after the operation of the calibrator in which the calibration step of FIG. 4 is performed.

본 발명의 실시예에 따른 알루미늄합금소재 자동차 차체부품의 제조방법은 도 2에 나타난 바와 같이 알루미늄합금소재를 자동차 차체부품의 형상으로 성형하는 고진공 고압주조 단계(S1), 주조된 성형품으로부터 탕도(runner) 등이 주조방안을 절단하고 버(burr)를 제거하는 주조방안 절단 및 사상 단계(S2), 정리하여 얻어지는 자동차 차체부품을 열처리하는 단계(S3), 열처리된 자동차 차체부품을 교정하는 단계(S4), 교정된 자동차 차체부품을 접합, 절단 및 홀 가공 등을 하는 가공 단계(S5), 마지막으로 가공된 자동차 차체부품을 조립하는 단계(S6)를 포함하여 구성된다.According to an embodiment of the present invention, a method of manufacturing an aluminum alloy material automotive body part includes a high vacuum high pressure casting step (S1) of molding an aluminum alloy material into a shape of an automotive body part as illustrated in FIG. runner) cutting the casting method and removing the burr, and cutting (finding step) (S2), heat treating the car body parts obtained by arranging (S3), and correcting the heat treated car body parts ( S4), a machining step (S5) for joining, cutting, and hole-processing the corrected vehicle body part, and finally, assembling the processed vehicle body part (S6).

특히, 상기 열처리 단계는 고진공 고압주조로 성형된 알루미늄합금소재 자동차 차체부품의 기계적 특성을 향상시키기 위해 수행하는 단계로서, 기존의 일반적인 알루미늄합금소재의 성형품에 대하여는 열처리 공정이 불가하였던 것을, 본 발명과 같이 고진공 고압주조로 성형한 경우에는 비로소 열처리 공정의 적용이 가능한 것을 실험을 통해 확인하고, 비로소 본 발명의 알루미늄합금소재 자동차 차체부품의 제조방법에 적용하기에 이르렀다. 본 발명에 적용가능한 열처리 방법으로는 T5 열처리, T6 열처리, T7 열처리가 존재함을 확인하였다.In particular, the heat treatment step is performed to improve the mechanical properties of the aluminum alloy material automotive body parts molded by high vacuum high pressure casting, the heat treatment process was impossible for the conventional molded products of aluminum alloy material, In the case of molding by high vacuum and high pressure casting, it was confirmed through experiments that the heat treatment process can be applied, and finally it was applied to the manufacturing method of the aluminum alloy material automobile body parts of the present invention. As a heat treatment method applicable to the present invention, it was confirmed that T5 heat treatment, T6 heat treatment, and T7 heat treatment exist.

이와 같은 열처리 단계(S3)를 거친 알루미늄합금소재의 자동차 차체부품(10)은 기계적 강도 및 강성이 향상되는 하나, 도 3에 도시된 바와 같이 제품(10)의 얇은 두께(3mm)로 인해 열처리 후 변형(뒤틀림)이 발생하게 되었으며(화살표 참조), 따라서 열처리 다음 단계로서 교정(straightening) 단계가 필수적으로 따르게 되었다.The automotive body part 10 of the aluminum alloy material which has undergone such a heat treatment step (S3) is improved in mechanical strength and rigidity, and as shown in FIG. 3, after heat treatment due to the thin thickness (3 mm) of the product 10. Deformation (twisting) has occurred (see arrow), so that the straightening step is essentially followed as a heat treatment next step.

알루미늄합금소재의 자동차 차체부품(10)에 대한 교정은 기존에 시도된바 없었기에 본 발명에서는 새로운 교정방법을 제안하게 되었으며, 도 4에 도시된 바와 같이 열처리되어 뒤틀어진 자동차 차체부품(10)을 상부의 가동지그(110)와 하부의 고정지그(120)의 사이에 개재시킨 다음 상,하 지그(110, 120)를 합형함으로써 지그(110, 120) 사이에 형성되는 성형공간에서 뒤틀어진 자동차 차체부품(10)이 제모습으로 복귀성형 되도록 한 것이다.Since the calibration of the automotive body parts 10 of the aluminum alloy material has not been attempted in the past, the present invention proposes a new calibration method, and as shown in FIG. The vehicle body twisted in the molding space formed between the jig 110, 120 by interposing between the upper movable jig 110 and the lower fixing jig 120 and then molding the upper and lower jig 110, 120. The part 10 is to be molded back to hair removal.

이때, 알루미늄합금소재의 자동차 차체부품(10)에 대하여는 교정 시 일정한 온도조건에서 일정한 시간동안 수행되어야 함을 확인하였으며, 특히 교정대상인 제품의 전체에 걸쳐 일정한 온도조건을 유지시키는 것이 중요한 사항인 관계로 본 발명에서는 가동지그(110)와 고정지그(120)의 재질로서 고열전도성 금속재질로 이루어지도록 한 것을 기술적 특징으로 삼게 되었다. 이러한 고열전도성 금속재질로서 구리(Cu), 베르늄동(BeCu), 구리텅스텐(WCu) 등을 들 수 있다.In this case, it was confirmed that the automotive body part 10 of the aluminum alloy material should be performed at a constant temperature condition for a predetermined time during calibration, and in particular, it is important to maintain a constant temperature condition throughout the entire product to be calibrated. In the present invention, as a material of the movable jig 110 and the fixed jig 120 is made to be made of a high thermal conductivity metal material as a technical feature. Copper (Cu), beryllium copper (BeCu), copper tungsten (WCu), etc. are mentioned as such a high thermally conductive metal material.

그리고, 이와 같이 고열전도성 금속재질의 가동지그(110)와 고정지그(120)를 일정한 온도로 가열 및 유지시켜주기 위해 각 지그(110, 120)의 측면에 다수의 열선삽입공(111, 121)을 형성하여 이를 통해 삽입되는 열선(도면 미도시)을 통해 지그(110, 120)의 온도를 일정하게 조절할 수 있고 또한 균일하게 유지할 수 있다.In addition, in order to heat and maintain the movable jig 110 and the fixed jig 120 made of a high thermal conductive metal at a constant temperature, a plurality of hot wire insertion holes 111 and 121 are provided on the side surfaces of the jig 110 and 120. Forming the through-heat wire (not shown) through which it is possible to constantly adjust the temperature of the jig (110, 120) and to maintain uniform.

이상과 같이 작동하기 위한 가동지그(110)와 고정지그(120)의 설비는 도 5에 도시된 바와 같은 열간프레스식 교정기(100)로 구현될 수 있다.The facility of the movable jig 110 and the fixed jig 120 to operate as described above may be implemented as a hot press calibrator 100 as shown in FIG.

열간프레스식 교정기(100)는 하단의 고정대(101) 상에 고정지그(120)를 절연패드(102)를 매개로 하여 고정시키고, 상단의 가동측(103)에는 역시 절연패드(104)를 매개로 가동지그(110)를 연결시킨다.The hot press calibrator 100 fixes the fixing jig 120 through the insulating pad 102 on the fixing base 101 at the lower side, and also the insulating pad 104 on the movable side 103 of the upper side. The movable jig 110 is connected.

교정기(100)의 상단부에 탑재되는 유압실린더(105)는 가동지그(110)의 가동을 위한 구성으로서 이에 의해 가동지그(110)는 도 6에 도시된 바와 같이 하단의 고정지그(120)에 형합된다. 교정기(100)의 용량은 15톤 이상인 것으로 준비됨이 바람직하다.The hydraulic cylinder 105 mounted on the upper end of the calibrator 100 is configured for the operation of the movable jig 110, whereby the movable jig 110 is fitted to the fixing jig 120 at the bottom as shown in FIG. 6. do. The capacity of the calibrator 100 is preferably prepared to be 15 tons or more.

역시 교정기(100)의 상단부에 탑재되는 제어기(106)는 가동지그(110)와 고정지그(120)의 형합 시의 압력 및 지그(110, 120)의 온도, 형합 시간 등을 제어한다.The controller 106 mounted on the upper end of the calibrator 100 controls the pressure of the movable jig 110 and the fixed jig 120, the temperature of the jig 110, 120, and the molding time.

가동지그(110)와 고정지그(120)의 형합에 의한 알루미늄합금소재 자동차 차체부품(10)의 교정 시의 온도는 250~350℃인 것이 바람직하며, 이때의 교정시간은 30초 이내로 설정함이 바람직하다. 구체적으로 교정 온도가 250℃인 경우 교정 시간은 30초로 하고, 교정 온도가 300℃인 경우에는 교정 시간을 15초로 조정하며, 교정 온도가 350℃인 경우에는 교정 시간을 8초 정도로 단축시키는 것이 바람직하다.The temperature at the time of calibration of the aluminum alloy material automotive body part 10 by the combination of the movable jig 110 and the fixed jig 120 is preferably 250 to 350 ° C., at which time the calibration time is set within 30 seconds. desirable. Specifically, when the calibration temperature is 250 ° C, the calibration time is 30 seconds, when the calibration temperature is 300 ° C, the calibration time is adjusted to 15 seconds, and when the calibration temperature is 350 ° C, the calibration time is preferably shortened to about 8 seconds. Do.

이러한 교정 단계(S4)를 통해 열처리로 뒤틀어졌던 알루미늄합금소재의 자동차 차체부품(10)은 형합된 지그(110, 120)의 성형공간에 맞추어져 제 형태의 차체부품(10)으로 복귀 성형, 즉 교정(straightening)된다. 특히, 알루미늄합금소재 차체부품(10)의 두께가 3mm 정도로 비교적 얇은 것을 고려할 때 강도향상을 위한 열처리 단계(S3)의 수행 후 필연적으로 발생하는 뒤틀림 변형을 바로잡기 위해 상기 설명된 바와 같은 교정 단계(S4)는 필수적이다.The automotive body part 10 of the aluminum alloy material, which has been twisted by heat treatment through the correction step S4, is adapted to the molding space of the jig 110 and 120 to be molded and returned to the body part 10 of the first embodiment. Straightening. Particularly, considering that the thickness of the aluminum alloy body part 10 is relatively thin, such as 3 mm, the calibration step as described above to correct the distortion that is inevitably generated after the heat treatment step S3 for the improvement of strength ( S4) is essential.

한편, 이상에서 설명된 알루미늄합금소재 자동차 차체부품의 제조방법은 본 발명의 이해를 돕기 위한 일 실시예에 불과하므로 본 발명의 권리범위 내지 기술적 범위가 상기에서 설명된 바에 한정되는 것으로 이해되어서는 곤란하다.On the other hand, since the manufacturing method of the aluminum alloy material vehicle body parts described above is only one embodiment to help the understanding of the present invention it is difficult to understand that the scope of the present invention to the technical scope is limited to those described above. Do.

본 발명의 권리범위 내지 기술적 범위는 후술하는 특허청구범위 및 그 균등범위에 의해 정하여진다.The scope of the invention to the technical scope of the present invention is defined by the claims to be described later and their equivalents.

10: 알루미늄합금소재의 자동차 차체부품
100: 열간프레스식 교정기
101: 고정대
102: 절연패드
103: 가동측
104: 절연패드
105: 유압실린더
106: 제어기
110: 가동지그
111: 열선삽입공
120: 고정지그
121: 열선삽입공10: automotive body parts of aluminum alloy material
100: hot press calibrator
101: fixture
102: insulation pad
103: movable side
104: insulation pad
105: hydraulic cylinder
106: controller
110: movable jig
111: hot wire insertion hole
120: fixed jig
121: hot wire inserter

Claims (3)

알루미늄합금소재 자동차 차체부품의 제조방법에 있어서,
고진공 고압주조로 알루미늄합금소재의 자동차 차체부품을 성형하는 단계와, 성형된 자동차 차체부품을 열처리하는 단계와, 열처리된 자동차 차체부품을 교정하는 단계를 포함하되,
상기 교정하는 단계는,
상기 자동차 차체부품의 성형공간이 형성된 가동지그와 고정지그의 사이에 상기 열처리된 차체부품을 개재시켜 상기 가동지그와 고정지그를 일정한 온도 하에서 일정한 시간 동안 합형함으로써 달성되는 것을 특징으로 하는 알루미늄합금소재 자동차 차체부품의 제조방법.In the manufacturing method of automobile body parts of aluminum alloy material,
Forming a car body part of an aluminum alloy material by high vacuum and high pressure casting, heat treating the molded car body part, and correcting the heat treated car body part,
The correcting step,
Aluminum alloy material automobile, characterized in that by molding the movable jig and the fixed jig for a certain time under a constant temperature between the movable jig and the fixed jig between the movable jig and the fixed jig formed the molding space of the vehicle body parts Method for manufacturing body parts. 제1항에 있어서,
상기 가동지그와 고정지그는 구리(Cu)를 함유하는 고열전도성 금속재질로 이루어지고, 각기 열선이 삽입되어 온도제어가 이루어질 수 있도록 구비됨으로써,
상기 가동지그와 고정지그의 합형은 250~350℃의 온도조건에서 30초 이내의 시간동안 수행되는 것을 특징으로 하는 알루미늄합금소재 자동차 차체부품의 제조방법.The method of claim 1,
The movable jig and the fixed jig are made of a high thermal conductive metal material containing copper (Cu), and each of the movable jig and the fixed jig is inserted to allow temperature control to be performed.
The combination of the movable jig and the fixed jig is a method of manufacturing an aluminum alloy material vehicle body parts, characterized in that performed for less than 30 seconds at a temperature condition of 250 ~ 350 ℃. 제2항에 있어서,
상기 가동지그와 고정지그는 구리(Cu), 베르늄동(BeCu), 구리텅스텐(WCu) 중의 어느 하나로 이루어진 것을 특징으로 하는 알루미늄합금소재 자동차 차체부품의 제조방법.The method of claim 2,
The movable jig and the fixed jig is made of any one of copper (Cu), bernium copper (BeCu), copper tungsten (WCu).
KR1020180096529A 2018-08-20 2018-08-20 Method of manufacturing vehicle chassis part made of aluminum alloy KR20200021142A (en)

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