KR20060066381A - Method for fabricating a bumper back beam using aluminum foam - Google Patents

Method for fabricating a bumper back beam using aluminum foam Download PDF

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Publication number
KR20060066381A
KR20060066381A KR1020040104966A KR20040104966A KR20060066381A KR 20060066381 A KR20060066381 A KR 20060066381A KR 1020040104966 A KR1020040104966 A KR 1020040104966A KR 20040104966 A KR20040104966 A KR 20040104966A KR 20060066381 A KR20060066381 A KR 20060066381A
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South Korea
Prior art keywords
back beam
mold
bumper
bumper back
cutting
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KR1020040104966A
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Korean (ko)
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KR101028565B1 (en
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배철홍
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal
    • B60R2019/182—Structural beams therefor, e.g. shock-absorbing made of metal of light metal, e.g. extruded

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

본 발명은 발포 알루미늄을 이용하여 차량용 범퍼 백빔을 제조하여 충돌 성능을 향상시킴과 동시에 경량화가 가능하도록;The present invention is to manufacture a bumper back beam for a vehicle using foamed aluminum to improve the crash performance and at the same time light weight;

단순 사각의 단면 형상을 갖는 스틸소재의 범퍼 백빔을 제작하는 스틸재 백빔 제조 단계; 상기 범퍼 백빔의 일단면에 대하여 그 길이방향으로 형성된 커팅라인을 따라 이를 절단하여 벌리는 백빔 커팅 단계; 상기 범퍼 백빔의 커팅부를 외측으로 하여 범퍼 백빔을 형틀 금형의 하형에 삽입하는 백빔의 형틀 금형 삽입 단계; 상기 형틀 금형 상의 범퍼 백빔의 커팅부를 통하여 발포진행 중인 발포 알루미늄을 범퍼 백빔의 내부에 삽입하는 발포 알루미늄 삽입 단계; 상기 형틀 금형의 상형을 하강하여 형틀 금형을 합형함으로써, 상기 커팅부가 벌어진 범퍼 백빔을 오므려 그 내부에서 상기 알루미늄의 발포가 진행되도록 하는 금형 합형 및 알루미늄 발포 단계; 상기 형틀 금형을 다시 분리하여 알루미늄이 발포 완료된 범퍼 백빔을 취출하는 범퍼 백빔 제조 완성단계를 포함하는 발포 알루미늄을 이용한 범퍼 백빔의 제조방법을 제공한다.Steel back beam manufacturing step of manufacturing a bumper back beam of steel material having a simple rectangular cross-sectional shape; A back beam cutting step of cutting the gap along a cutting line formed in a longitudinal direction with respect to one end surface of the bumper back beam; A mold inserting step of a back beam for inserting the bumper back beam into the lower mold of the mold with the cutting part of the bumper back beam outward; A foamed aluminum inserting step of inserting the foamed aluminum in the foaming process into the interior of the bumper backbeam through the cutting portion of the bumper backbeam on the mold; Forming the mold by lowering the upper mold of the mold, thereby closing the bumper back beam in which the cutting unit is opened to mold the aluminum in the mold; Provided is a method for producing a bumper back beam using foamed aluminum, including the step of manufacturing the bumper back beam to remove the foamed bumper back beam by separating the mold again.

발포 알루미늄, 범퍼 백빔 Foam Aluminum, Bumper Back Beam

Description

발포 알루미늄을 이용한 범퍼 백빔의 제조방법{METHOD FOR FABRICATING A BUMPER BACK BEAM USING ALUMINUM FOAM}Manufacturing method of bumper back beam using foamed aluminum {METHOD FOR FABRICATING A BUMPER BACK BEAM USING ALUMINUM FOAM}

도 1은 일반적인 차량용 프런트 범퍼의 분해 사시도, 1 is an exploded perspective view of a general vehicle front bumper;

도 2은 본 발명의 실시예에 따른 발포 알루미늄을 이용한 범퍼 백빔의 제조방법에 따른 공정 블록도, 및2 is a process block diagram according to a method for manufacturing a bumper back beam using foamed aluminum according to an embodiment of the present invention, and

도 3은 본 발명의 실시예에 따른 발포 알루미늄을 이용한 범퍼 백빔의 제조방법에 따른 공정도이다. Figure 3 is a process chart according to the manufacturing method of the bumper back beam using foamed aluminum according to an embodiment of the present invention.

본 발명은 발포 알루미늄을 이용한 범퍼 백빔의 제조방법에 관한 것으로서, 보다 상세하게는 발포 알루미늄을 이용하여 차량용 범퍼 백빔을 제조하여 충돌 성능을 향상시킴과 동시에 경량화가 가능하도록 하는 발포 알루미늄을 이용한 범퍼 백빔의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a bumper back beam using foamed aluminum, and more particularly, to manufacture a bumper back beam for a vehicle using foamed aluminum to improve collision performance and to reduce the weight of the bumper back beam using foamed aluminum. It relates to a manufacturing method.

일반적으로 차량용 범퍼는, 차량이 다른 차량이나 물체와의 충돌시, 그 충격을 흡수하여 승차자의 안전을 도모하기 위해 차량의 전,후단부의 소정 부위에 배치되는 완충부재이다. BACKGROUND ART In general, a vehicle bumper is a shock absorbing member disposed at a predetermined portion of the front and rear ends of a vehicle in order to absorb the impact and to protect the occupant when the vehicle collides with another vehicle or an object.                         

이러한 차량용 범퍼는, 도 1에서 도시한(프런트 범퍼) 바와 같이, 차량의 전,후방(리어 범퍼는 미도시)에 차체 장착용 스테이(10)을 통하여 차폭방향으로 장착되는 범퍼 백빔(20)과, 상기 범퍼 백빔(20)의 전방에 배치되는 충격흡수부재(미도시), 그리고 상기 범퍼 백빔(20)과 충격흡수부재(미도시)를 은폐 보호하는 범퍼 커버(30) 등으로 구성된다.Such a vehicle bumper includes a bumper back beam 20 mounted in the vehicle width direction through the vehicle body mounting stay 10 on the front and rear of the vehicle (the rear bumper is not shown), as shown in FIG. 1 (front bumper). And a shock absorbing member (not shown) disposed in front of the bumper back beam 20, and a bumper cover 30 to conceal and protect the bumper back beam 20 and the shock absorbing member (not shown).

종래의 상기 범퍼 백빔(20)은, 내부에 중공부를 갖도록 2장의 레일(21)을 소정의 형상으로 성형하여 서로 맞대어 용접하고, 그 내부에는 보강부재(미도시)를 설치하며, 양측에는 차체에 장착하기 위한 스테이(10)을 일체로 용접하여 구성하는 것이 일반적이다. The conventional bumper back beam 20 is formed by forming two rails 21 into a predetermined shape so as to have a hollow portion therein, and welding them to each other, and installing reinforcing members (not shown) therein, and on both sides of the vehicle body. It is common to comprise the stay 10 for integrally welding.

이러한 범퍼 빔(20)은 차량의 충돌시, 그 형상이 변형되면서 충격을 충분히 흡수하여 승차자를 보호할 수 있도록 하는 완충부재인 만큼 충돌 성능을 충분히 고려하여 설계된다. The bumper beam 20 is designed in consideration of the collision performance as it is a shock absorbing member that can absorb the shock sufficiently to protect the occupant while deforming the shape of the vehicle collision.

그러나 최근에는 상기 범퍼 빔(20)의 제작시, 충돌 성능에 국한되지 않고, 차량의 경량화의 추세에 맞추어 범퍼 빔(20)을 경량소재로 제작하고자 하는 연구가 활발하게 진행되고 있으며, 이러한 연구의 과정에서 발포 알루미늄 소재의 적용이 고려되고 있다.However, in recent years, the manufacture of the bumper beam 20 is not limited to crash performance, and researches are being actively made to manufacture the bumper beam 20 as a lightweight material in accordance with the trend of lightening the vehicle. In the process, application of foamed aluminum material is under consideration.

상기한 발포 알루미늄은 차량 경량화에 기여할 수 있는 가장 대표적인 금속재료로, 경량성 뿐만 아니라 물과 공기의 투수성, 충격 흡수성, 흡차음성, 낮은 열전도성, 절연 특성, 내식성 등이 우수하여 자동차용 재료로 사용하게 되면 20% 경량화를 이룰 수 있어 차량의 경량화를 위한 대체 기술로 주목받고 있다.The above-mentioned foamed aluminum is the most representative metal material that can contribute to the weight reduction of the vehicle, and it is excellent in lightness as well as water and air permeability, shock absorption, sound absorption and sound resistance, low thermal conductivity, insulation properties, corrosion resistance, etc. When used, it is possible to achieve 20% weight reduction, which is attracting attention as an alternative technology for lightening the vehicle.

따라서, 본 발명은 상기한 바와 같이 발포 알루미늄을 이용하여 차체의 경량화를 가능하게 하기 위하여 발명된 것으로, 본 발명의 목적은 발포 알루미늄을 이용하여 차량용 범퍼 백빔을 제조하여 충돌 성능을 향상시킴과 동시에 경량화가 가능하도록 하는 발포 알루미늄을 이용한 범퍼 백빔의 제조방법을 제공함에 있다.Therefore, the present invention was invented to enable the weight reduction of the vehicle body using foamed aluminum as described above, and an object of the present invention is to manufacture a bumper back beam for a vehicle using the foamed aluminum to improve collision performance and at the same time reduce the weight. It is to provide a method for producing a bumper back beam using foamed aluminum to enable.

상기의 목적을 실현하기 위한 본 발명의 발포 알루미늄을 이용한 범퍼 백빔의 제조방법은 단순 사각의 단면 형상을 갖는 스틸소재의 범퍼 백빔을 제작하는 스틸재 백빔 제조 단계; 상기 범퍼 백빔의 일단면에 대하여 그 길이방향으로 형성된 커팅라인을 따라 이를 절단하여 벌리는 백빔 커팅 단계; 상기 범퍼 백빔의 커팅부를 외측으로 하여 범퍼 백빔을 형틀 금형의 하형에 삽입하는 백빔의 형틀 금형 삽입 단계; 상기 형틀 금형 상의 범퍼 백빔의 커팅부를 통하여 발포진행 중인 발포 알루미늄을 범퍼 백빔의 내부에 삽입하는 발포 알루미늄 삽입 단계; 상기 형틀 금형의 상형을 하강하여 형틀 금형을 합형함으로써, 상기 커팅부가 벌어진 범퍼 백빔을 오므려 그 내부에서 상기 알루미늄의 발포가 진행되도록 하는 금형 합형 및 알루미늄 발포 단계; 상기 형틀 금형을 다시 분리하여 알루미늄이 발포 완료된 범퍼 백빔을 취출하는 범퍼 백빔 제조 완성단계를 포함한다.Method for producing a bumper back beam using the foamed aluminum of the present invention for realizing the above object is a steel back beam manufacturing step of producing a bumper back beam of steel material having a simple rectangular cross-sectional shape; A back beam cutting step of cutting the gap along a cutting line formed in a longitudinal direction with respect to one end surface of the bumper back beam; A mold inserting step of a back beam for inserting the bumper back beam into the lower mold of the mold with the cutting part of the bumper back beam outward; A foamed aluminum inserting step of inserting the foamed aluminum in the foaming process into the interior of the bumper backbeam through the cutting portion of the bumper backbeam on the mold; Forming the mold by lowering the upper mold of the mold, thereby closing the bumper back beam in which the cutting unit is opened to mold the aluminum in the mold; And removing the mold back to complete a bumper back beam manufacturing step of taking out a bumper back beam in which aluminum is foamed.

이하, 본 발명의 바람직한 5가지의 실시예를 첨부한 도면을 참조로 상세하게 설명하면 다음과 같다.Hereinafter, the five preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2은 본 발명의 실시예에 따른 발포 알루미늄을 이용한 범퍼 백빔의 제조 방법에 따른 공정 블록도, 도 3은 본 발명의 실시예에 따른 발포 알루미늄을 이용한 범퍼 백빔의 제조방법에 따른 공정도로써, 본 발명의 실시예에 따른 발포 알루미늄을 이용한 범퍼 백빔의 제조방법은 먼저, 단순 사각의 단면 형상을 갖는 스틸소재의 범퍼 백빔(1)을 제작한다.(S10) 2 is a process block diagram according to a method of manufacturing a bumper backbeam using foamed aluminum according to an embodiment of the present invention, and FIG. 3 is a process diagram according to a method of manufacturing a bumper backbeam using foamed aluminum according to an embodiment of the present invention. In the method for manufacturing a bumper back beam using foamed aluminum according to an embodiment of the present invention, first, a bumper back beam 1 of steel material having a simple square cross-sectional shape is manufactured.

상기 스틸재 범퍼 백빔(1)은 그 두께를 0.9mm로 하여 제조하는 것이 바람직하며, 이는 종래의 두께인 1.4mm에 비하여 중량면에서 약 30% 이상의 절감효과를 예측할 수 있다.The steel bumper back beam 1 is preferably manufactured with a thickness of 0.9 mm, which can predict a saving effect of about 30% or more in weight compared to 1.4 mm, which is a conventional thickness.

이어서, 상기 제작된 스틸재 범퍼 백빔(1)의 일단면에 대하여 그 길이방향으로 커팅라인(CL)을 형성하여 그 커팅라인(CL)을 따라 절단하여 일정량 벌려 두게 된다.(S20)Subsequently, a cutting line CL is formed in the longitudinal direction with respect to one end surface of the manufactured steel bumper back beam 1, and the cutting line CL is cut along the cutting line CL to open a predetermined amount.

상기 범퍼 백빔(1)을 커팅하여 벌려두는 것은 그 커팅부(CP)를 통하여 발포 알루미늄을 삽입하기 위함이다.The bumper back beam 1 is cut and opened to insert the foamed aluminum through the cutting part CP.

그리고 상기 범퍼 백빔(1)의 커팅부(CP)를 외측으로 하여 범퍼 백빔(1)을 형틀 금형(3)의 하형(5)에 삽입한다.(S30) Then, the bumper back beam 1 is inserted into the lower mold 5 of the mold 3 with the cutting portion CP of the bumper back beam 1 facing outward.

이 때, 상기 형틀 금형(3)은 상형(7)과 하형(5)을 구비하며, 상형(7)과 하형(5)은 서로 대응하는 단면상에 상기 범퍼 백빔(1)의 최초 제작시의 치수를 갖는 형틀면(9)으로 이루어진다.At this time, the mold die 3 has an upper mold 7 and a lower mold 5, and the upper mold 7 and the lower mold 5 have dimensions at the time of initial manufacture of the bumper back beam 1 on cross sections corresponding to each other. It consists of a mold surface (9) having a.

이와 같이, 상기 형틀 금형(3)의 하형(5) 상에 일단면이 커팅되어 벌어진 범퍼 백빔(1)의 상기 커팅부(CP)를 통하여 발포진행 중인 발포 알루미늄(AL)을 그 내부에 삽입한다.(S40) In this way, the foamed aluminum AL in the foaming process is inserted through the cutting portion CP of the bumper back beam 1 having one end cut on the lower mold 5 of the die 3. (S40)                     

여기서, 상기 발포 알루미늄(AL)은 ADC12 다이캐스팅 제품의 스크랩을 5% 질산 수용액에 침지하여 표면에 존재하는 이형제 및 윤활제를 제거한 후, 에탄올, 물 순서로 세척하여 완전 건조시킨 다음, 전기로 내부에서 알루미늄 스크랩(ADC12)을 장입하고, 680℃에서 완전용해가 되면 증점제 투입 후, 교반자를 회전시키는 상태에서, 발포제 투입 후 적정시간 교반한 상태로 발포가 진행중인 발포 알루미늄을 사용하며, 상기 범퍼 백빔(1)의 내부에 주입하게 된다. In this case, the foamed aluminum (AL) is immersed in a 5% nitric acid solution to remove the release agent and lubricant on the surface by immersing the scrap of ADC12 die-casting product, ethanol, water and then completely dried, and then aluminum inside the electric furnace When the scrap (ADC12) is charged and completely dissolved at 680 ° C., after the thickener is added, the stirrer is rotated, and the foamed aluminum in the foaming is being used while stirring for an appropriate time after the blowing agent is added. Will be injected into the.

이와 같이, 발포가 진행중인 발포 알루미늄(AL)이 주인된 범퍼 백빔(1)은 상기 형틀 금형(3)의 상형(7)이 하강하여 하형(5)과 합형됨으로서 그 커팅부(CP)가 휘어져 닫히게 되며, 그 내부에서 상기 알루미늄의 발포가 진행된다.(S50)As described above, the bumper back beam 1, which is predominantly foamed aluminum AL, is formed so that the upper die 7 of the die 3 is lowered to be combined with the lower die 5 so that the cutting portion CP is bent and closed. The foaming of the aluminum proceeds therein. (S50)

이 때, 사용되는 상기 발포 알루미늄(AL)은 40vol%~98 vol% 의 범위내의 기공을 갖는 다공질 금속으로 이루어지는 것이 바람직하다.At this time, the foamed aluminum (AL) to be used is preferably made of a porous metal having pores in the range of 40 vol% to 98 vol%.

이와 같이, 상기 발포 알루미늄(AL)이 상기 범퍼 백빔(1)의 내부에서 완전히 발포하여 냉각된 후에는 상기 형틀 금형(3)을 다시 분리하여 알루미늄이 발포 완료된 범퍼 백빔(1)을 취출함으로써, 본 발명의 발포 알루미늄(AL)을 이용한 범퍼 백빔(1)의 제조를 완료하게 된다. As described above, after the foamed aluminum AL is completely foamed and cooled inside the bumper back beam 1, the mold die 3 is separated again to take out the bumper back beam 1 in which aluminum is foamed. The manufacture of the bumper back beam 1 using the foamed aluminum AL of this invention is completed.

여기서, 상기 범퍼 백빔(1)의 커팅부(CP)는 상기 발포 알루미늄(AL)이 응고되는 과정에서, 범퍼 백빔(1)의 내부면과 완전히 접착되어 그 형상을 유지하게 된다.Here, the cutting part CP of the bumper back beam 1 is completely adhered to the inner surface of the bumper back beam 1 in the process of solidifying the foamed aluminum AL, thereby maintaining its shape.

이상에서 설명한 바와 같이, 본 발명에 따른 발포 알루미늄을 이용한 범퍼 백빔의 제조방법에 의하면, 발포 알루미늄을 이용하여 차량용 범퍼 백빔을 제작함으로써, 충돌 성능을 개선하여 차량의 안전성을 높일 수 있으며, 동시에, 경량화의 요구를 충족시킬 수 있는 등의 효과가 있다.As described above, according to the manufacturing method of the bumper back beam using the foamed aluminum according to the present invention, by manufacturing a vehicle bumper back beam using the foamed aluminum, it is possible to improve the safety of the vehicle by improving the collision performance, at the same time, lightweight It can meet the needs of the effect.

즉, 종래 스틸재 범퍼 백빔의 복잡한 형상을 단순화할 수 있으며, 그 두께를 감소하는 등의 이점을 갖는데, 기존의 스틸 백빔은 강성을 증대시키기 위해 안쪽으로 굽어진 형상을 하고 있으나, 본 발명에서는 고에너지 흡수성능이 있는 발포 금속이 내부에 충진되어 동등 이상의 충돌 성능을 확보하며, 스틸재 백빔의 형상을 보다 단순화하고, 그 두께를 감소(30%)시켜 공정 단순화 및 경량화(20%)를 달성할 수 있는 것이다. That is, the complicated shape of the conventional steel bumper back beam can be simplified, and the thickness thereof can be reduced, but the conventional steel back beam has an inwardly curved shape to increase rigidity, but in the present invention, Foamed metal with energy absorbing capacity is filled inside to secure more than equivalent collision performance, to simplify the shape of steel back beam, reduce the thickness (30%) and achieve the process simplification and light weight (20%). It can be.

Claims (3)

단순 사각의 단면 형상을 갖는 스틸소재의 범퍼 백빔을 제작하는 스틸재 백빔 제조 단계;Steel back beam manufacturing step of manufacturing a bumper back beam of steel material having a simple rectangular cross-sectional shape; 상기 범퍼 백빔의 일단면에 대하여 그 길이방향으로 형성된 커팅라인을 따라 이를 절단하여 벌리는 백빔 커팅 단계;A back beam cutting step of cutting the gap along a cutting line formed in a longitudinal direction with respect to one end surface of the bumper back beam; 상기 범퍼 백빔의 커팅부를 외측으로 하여 범퍼 백빔을 형틀 금형의 하형에 삽입하는 백빔의 형틀 금형 삽입 단계; A mold inserting step of a back beam for inserting the bumper back beam into the lower mold of the mold with the cutting part of the bumper back beam outward; 상기 형틀 금형 상의 범퍼 백빔의 커팅부를 통하여 발포진행 중인 발포 알루미늄을 범퍼 백빔의 내부에 삽입하는 발포 알루미늄 삽입 단계;A foamed aluminum inserting step of inserting the foamed aluminum in the foaming process into the interior of the bumper backbeam through the cutting portion of the bumper backbeam on the mold; 상기 형틀 금형의 상형을 하강하여 형틀 금형을 합형함으로써, 상기 커팅부가 벌어진 범퍼 백빔을 오므려 그 내부에서 상기 알루미늄의 발포가 진행되도록 하는 금형 합형 및 알루미늄 발포 단계;Forming the mold by lowering the upper mold of the mold, thereby closing the bumper back beam in which the cutting unit is opened to mold the aluminum in the mold; 상기 형틀 금형을 다시 분리하여 알루미늄이 발포 완료된 범퍼 백빔을 취출하는 범퍼 백빔 제조 완성단계;를 포함하는 발포 알루미늄을 이용한 범퍼 백빔의 제조방법.And removing the mold back to remove the bumper back beam from which the aluminum is foamed. 청구항 1에 있어서, 상기 스틸재 범퍼 백빔은 The method of claim 1, wherein the steel bumper back beam 그 두께를 0.9mm로 하여 제조하는 것을 특징으로 하는 발포 알루미늄을 이용한 범퍼 백빔의 제조방법.A method for producing a bumper back beam using foamed aluminum, characterized in that the thickness is made 0.9 mm. 청구항 1에 있어서, 상기 발포 알루미늄은 The method according to claim 1, wherein the foamed aluminum 40vol%~98 vol% 의 범위내에서 기공을 갖는 다공질 금속으로 이루어지는 것을 특징으로 하는 발포 알루미늄을 이용한 범퍼 백빔의 제조방법.A method for producing a bumper backbeam using foamed aluminum, comprising a porous metal having pores within the range of 40 vol% to 98 vol%.
KR1020040104966A 2004-12-13 2004-12-13 Method for fabricating a bumper back beam using aluminum foam KR101028565B1 (en)

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CN107128268A (en) * 2017-05-13 2017-09-05 安徽省鸣新材料科技有限公司 A kind of automobile collision preventing structure of use foamed aluminium

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JP3645599B2 (en) * 1994-12-28 2005-05-11 株式会社ジェイエスピー Manufacturing method of door panel and foam composite
KR100522847B1 (en) * 2003-03-21 2005-10-19 주식회사 성우하이텍 Method for fabricating a vehicle bumper beam using solid aluminum foam and bumper beam produced by the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107128268A (en) * 2017-05-13 2017-09-05 安徽省鸣新材料科技有限公司 A kind of automobile collision preventing structure of use foamed aluminium

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