JP2002362157A - Door beam made of aluminum alloy - Google Patents
Door beam made of aluminum alloyInfo
- Publication number
- JP2002362157A JP2002362157A JP2001165979A JP2001165979A JP2002362157A JP 2002362157 A JP2002362157 A JP 2002362157A JP 2001165979 A JP2001165979 A JP 2001165979A JP 2001165979 A JP2001165979 A JP 2001165979A JP 2002362157 A JP2002362157 A JP 2002362157A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- door beam
- cut
- flange
- bending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000005452 bending Methods 0.000 claims abstract description 26
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 229910009369 Zn Mg Inorganic materials 0.000 claims description 2
- 229910007573 Zn-Mg Inorganic materials 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract 2
- 230000035882 stress Effects 0.000 description 12
- 230000032683 aging Effects 0.000 description 7
- 229910018571 Al—Zn—Mg Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910018464 Al—Mg—Si Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車のドアの内
部に固定され、側面衝突の際に衝撃を吸収して乗員を保
護するドアビームに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door beam which is fixed inside a door of an automobile and protects an occupant by absorbing an impact in a side collision.
【０００２】[0002]
【従来の技術】自動車用のドアビーム材として、軽量化
のためアルミニウム合金押出材が使用されるようになっ
た。ドアビームにはブラケット方式とブラケットレス方
式があり、前者は、例えば特開平５−２５４３４４号公
報に記載されたように、その両端部に取付用の鋼製ブラ
ケットを固定し、アセンブリ工程においてブラケットの
部分をボルト・ナット等によりドア内部に固定するもの
である。また、後者は、例えば実開平６−４２３４４号
公報に記載されたように、ドアビーム材の端部をそのま
ま取付部とし、ブラケットを用いることなく直接ボルト
・ナット等によりドア内部に固定するものである。2. Description of the Related Art Extruded aluminum alloys have been used as door beam materials for automobiles in order to reduce weight. Door beams are classified into a bracket type and a bracket-less type. The former uses, as described in, for example, Japanese Patent Application Laid-Open No. 5-254344, a steel bracket for mounting fixed to both ends of the door beam. Is fixed inside the door with bolts and nuts. In the latter case, for example, as described in Japanese Utility Model Application Laid-Open No. 6-42344, the end of the door beam material is used as a mounting portion as it is, and directly fixed to the inside of the door with bolts and nuts without using a bracket. .
【０００３】[0003]
【発明が解決しようとする課題】上記ブラケット方式及
びブラケットレス方式とも、ドアビームの重量軽減及び
狭いドア内部における取付空間の確保等のため、前記実
開平６−４２３４４号公報に記載されたドアビームのよ
うに、アルミニウム合金押出材の端部を一方のフランジ
側から他方のフランジ側へ向けて斜めに切り落し、続い
て該端部に塑性変形を加えて所定形状に成形する場合が
あり得る。しかし、その場合、塑性変形により端部に大
きい残留応力が生じ、アルミニウム合金の組成によって
は応力腐食割れを起こすことが考えられる。特に、ドア
ビームの軽量化を図るため、高強度のＡｌ−Ｚｎ−Ｍｇ
系アルミニウム合金を用いると、例えば特開平９−２６
８３４２号公報にも記載されているように、耐応力腐食
割れ性（耐ＳＣＣ性）の悪化が懸念される。In both the bracket type and the bracketless type, the door beam described in Japanese Utility Model Application Laid-Open No. 6-42344 is used to reduce the weight of the door beam and secure a mounting space inside a narrow door. Then, the end of the extruded aluminum alloy may be cut off obliquely from one flange side to the other flange side, and then the end may be plastically deformed and formed into a predetermined shape. However, in this case, it is conceivable that a large residual stress is generated at the end due to plastic deformation, and stress corrosion cracking is caused depending on the composition of the aluminum alloy. Particularly, in order to reduce the weight of the door beam, a high-strength Al-Zn-Mg
When a series aluminum alloy is used, for example,
As described in Japanese Patent No. 8342, there is a concern that stress corrosion cracking resistance (SCC resistance) may be deteriorated.
【０００４】一方、高強度Ａｌ−Ｚｎ−Ｍｇ系アルミニ
ウム合金押出材の耐ＳＣＣ性を改善するには、塑性変形
後、焼鈍処理又は高い温度での時効処理を行って、材料
強度を低下させるとともに残留応力を除去することが考
えられる。しかし、これではドアビームの軽量化が達成
できず、高強度Ａｌ−Ｚｎ−Ｍｇ系アルミニウム合金を
用いる意味がない。そこで、本発明は、アルミニウム合
金押出材、例えば４００Ｎ／ｍｍ２以上の引張強度を有
する高強度Ａｌ−Ｚｎ−Ｍｇ系アルミニウム合金押出材
を用い、これに端部の切断及び塑性変形を加えたドアビ
ームにおいて、その耐ＳＣＣ性を改善することを目的と
する。On the other hand, in order to improve the SCC resistance of a high-strength Al-Zn-Mg-based aluminum alloy extruded material, after plastic deformation, an annealing treatment or an aging treatment at a high temperature is performed to reduce the material strength and It is conceivable to remove the residual stress. However, in this case, the weight of the door beam cannot be reduced, and there is no point in using a high-strength Al-Zn-Mg-based aluminum alloy. Therefore, the present invention uses an aluminum alloy extruded material, for example, a high-strength Al-Zn-Mg-based aluminum alloy extruded material having a tensile strength of 400 N / mm 2 or more, and a door beam obtained by adding an edge cut and plastic deformation to the extruded material. In order to improve the SCC resistance.
【０００５】[0005]
【課題を解決するための手段】本発明に係るアルミニウ
ム合金製ドアビームは、内外フランジとそれらを連結す
るウエブからなるアルミニウム合金押出材製であり、そ
の端部が一方のフランジ側から他方のフランジ側へ向け
斜めに切り落され、当該他方のフランジ側を切り落とさ
れた側に向けて変位させる塑性変形が端部に加えられ
て、その一部が取付部とされ、さらに、斜めに切り落と
された端部の前記一方のフランジまでの長さをＬとし、
変位の開始箇所までの長さをＭとしたとき、Ｌ＞Ｍであ
ることを特徴とする。前記塑性変形は例えば曲げ加工に
より行われ、ウエブの座屈を実質的に伴わないのが望ま
しい。An aluminum alloy door beam according to the present invention is made of an aluminum alloy extruded material comprising inner and outer flanges and a web for connecting the inner and outer flanges, and has an end portion extending from one flange side to the other flange side. Plastic deformation is applied to the end portion, which is displaced diagonally toward the cut-off side, and the other flange side is displaced toward the cut-off side, a part of which is used as a mounting portion, and further, the end portion which is cut off obliquely. L is the length of the part to the one flange,
When the length to the starting point of the displacement is M, L> M. The plastic deformation is performed by, for example, bending, and it is preferable that the buckling of the web does not substantially occur.
【０００６】[0006]
【発明の実施の形態】図面を参照してより具体的に説明
すると、図１に例示する押出材１は互いに平行なフラン
ジ２、３とそれらを垂直に連結するウエブ４（一対）か
らなり、まず、その端部がフランジ２側からフランジ３
側に向け斜めに切り落とされる（ａ）。続いて、その端
部において、フランジ３側を切り落とされた側に向けて
変位させる塑性変形が加えられ、その一部が取付部５と
される（ｂ）。この取付部５にはボルト穴等が形成さ
れ、そこにブラケットが取り付けられるか（ブラケット
方式）、又は取り付けられずに（ブラケットレス方
式）、ドアビームとしてドア内部に固定される。ただ
し、ブラケットの取付面又はドアパネルへの取付面とな
る側は、フランジ３側でもウエブ４側でもよい。DESCRIPTION OF THE PREFERRED EMBODIMENTS More specifically, referring to the drawings, the extruded material 1 shown in FIG. 1 comprises flanges 2 and 3 parallel to each other and a web 4 (a pair) for vertically connecting them. First of all, the end is moved from the flange 2 side to the flange 3 side.
It is cut off diagonally toward the side (a). Subsequently, plastic deformation is performed at the end to displace the flange 3 toward the cut-off side, and a part of the plastic deformation is used as the mounting portion 5 (b). A bolt hole or the like is formed in the mounting portion 5 and a bracket is mounted therein (bracket type) or is not mounted (bracketless type), and is fixed as a door beam inside the door. However, the side to be the mounting surface of the bracket or the mounting surface to the door panel may be the flange 3 side or the web 4 side.
【０００７】図１に示すように、塑性変形後の押出材１
の斜めに切り落とされた端部の左端（ａ点）からフラン
ジ２の左端（ｂ点）までの直線長さがＬであり、押出材
１の同じく左端（ａ点）から変位の開始箇所（ｃ点）ま
での直線長さがＭであり、Ｌ＞Ｍとされている。また、
Ｎはａ点から曲げ部の中心までの距離、Ｈはフランジ３
側の最大変位量、θは切断角度を表す。Ｈは主として取
付部の位置という設計上の観点で決められるが、角度θ
及び距離Ｎは小さい方がウエブ高さの低い箇所で塑性変
形を行うことができるようになり、耐ＳＣＣ性の面から
望ましい。As shown in FIG. 1, an extruded material 1 after plastic deformation
The straight length from the left end (point a) of the diagonally cut end to the left end (point b) of the flange 2 is L, and the displacement start point (c) from the same left end (point a) of the extruded material 1 The length of the straight line up to the point) is M, and L> M. Also,
N is the distance from point a to the center of the bent part, H is the flange 3
The maximum displacement amount on the side, θ represents the cutting angle. H is mainly determined from the design point of view of the position of the mounting portion, but the angle θ
The smaller the distance N is, the more the plastic deformation can be performed at a portion where the web height is low, which is desirable from the viewpoint of SCC resistance.
【０００８】上記塑性変形は、例えば図２〜図３に示す
ように、一対のプレス曲げ型６、７を使用し、押出材１
を水平に保持し、上型６の下面及び下型７の上面の間で
フランジ３を挟むプレス型曲げにより行うことができ
る。このプレス型曲げの曲げ部は２箇所（曲げ半径
Ｒ１、Ｒ２）であり、ウエブ４は曲げ部において面内曲
げを受ける。上型６には一対のウエブ４をそれぞれ収容
する溝８が形成されているため、プレス型曲げの際にウ
エブ４に直接加圧力が付加されない。The plastic deformation is carried out by using a pair of press bending dies 6 and 7 as shown in FIGS.
Is held horizontally, and press-type bending which sandwiches the flange 3 between the lower surface of the upper die 6 and the upper surface of the lower die 7 can be performed. The press-type bending has two bending portions (bending radii R 1 and R 2 ), and the web 4 is subjected to in-plane bending at the bending portions. Since the upper die 6 is formed with the grooves 8 for accommodating the pair of webs 4 respectively, no pressing force is directly applied to the webs 4 at the time of press die bending.
【０００９】曲げ半径Ｒ２の曲げ部において、変位の開
始箇所（ｃ点）及びその近傍では、それよりさらに左側
の領域に比べてウエブ４の高さが高く、変形後の残留応
力が大きくなるはずであり、また、曲げ変形に際して面
外への座屈が起こりやすい。しかし、Ｌ＞Ｍの場合、Ｌ
≦Ｍの場合と比較して座屈が抑制される。これは、Ｌ＞
Ｍの場合は、ウエブ４の曲げ変形に対しフランジ２によ
る拘束が弱いか又は拘束が実質的にない（フランジ２が
切り落とされているため）ことが影響しているものと推
測される。後述する実施例によれば、ウエブの座屈が局
部的に残留応力を大きくしている可能性がある。[0009] In the bending the bending portion of the radius R 2, the start point (c point) and the vicinity thereof of the displacement, the height of the web 4 is high, the residual stress increases after deformation than further to the left of the region than it In addition, out-of-plane buckling is likely to occur during bending deformation. However, if L> M, then L
Buckling is suppressed as compared with the case of ≤M. This is L>
In the case of M, it is presumed that the restraint by the flange 2 is weak or substantially free from the bending deformation of the web 4 (because the flange 2 is cut off), which is an influence. According to the embodiment described later, the buckling of the web may locally increase the residual stress.
【００１０】一方、曲げ半径Ｒ１の曲げ部においては逆
方向の曲げ（曲げ戻し）が行われ、これによりフランジ
３側が長さ方向に平行で平面的とされた取付部５が形成
されている。しかし、取付部５の形態はこれに限定され
ず、必要であれば、フランジ３側が長さ方向に平行でな
くても、また平面的でなくてもよい。この曲げ部では、
ウエブ４の高さが曲げ半径Ｒ１の曲げ部に比べて低く、
そのため残留応力が比較的小さいと思われ、また面外へ
の座屈も起こりにくい。On the other hand, bending in the bending portion of the radius R 1 of the backward bending (unbending) is performed, thereby attaching portion 5 in which the flange 3 side is a plane parallel to the length direction is formed . However, the form of the mounting portion 5 is not limited to this. If necessary, the flange 3 side may not be parallel to the length direction or may not be planar. In this bend,
The height of the web 4 is bent lower than the bent portion of the radius R 1,
Therefore, the residual stress is considered to be relatively small, and buckling out of the plane hardly occurs.
【００１１】なお、図４、５は主としてＬ＜Ｍの場合の
プレス型曲げ方法を例示するもので、一対のプレス曲げ
型１６、１７のうち上型１６が、下型１７との間でフラ
ンジ３を挟む第１型１６ａ（前記上型６と同様に溝１８
を有する）と、フランジ２の上面に当接して押出材１を
下型１７の上面に押し付ける平らな第２型１６ｂからな
る。距離Ｎ（図１参照）が距離Ｌより十分大きいときは
第１型１６ａは不要である。4 and 5 mainly exemplify a press bending method in the case of L <M, in which the upper die 16 of the pair of press bending dies 16 and 17 has a flange between the lower die 17. The first die 16a sandwiching the third die 3 (the groove 18 similar to the upper die 6)
) And a flat second die 16 b that abuts against the upper surface of the flange 2 and presses the extruded material 1 against the upper surface of the lower die 17. When the distance N (see FIG. 1) is sufficiently larger than the distance L, the first mold 16a is unnecessary.
【００１２】Ａｌ−Ｚｎ−Ｍｇ系アルミニウム合金は熱
処理型で、人工時効処理により強度を向上させて用いら
れるが、加工性の面から人工時効処理は塑性変形後が望
ましい。人工時効処理後の強度は４００Ｎ／ｍｍ２以上
であることが望ましく、本発明では、Ｚｎを約４〜９％
及びＭｇを約０．５〜２％含むＡｌ−Ｚｎ−Ｍｇ系アル
ミニウム合金が使用できる。また、この押出材は、耐Ｓ
ＣＣ性の面から繊維状組織が多い方が望ましい。粗大な
再結晶組織は粒界から割れやすいためである。さらに、
塑性変形が加えられた部位に生じる最大の引張残留応力
が素材の０．２％耐力以下であることが望ましい。この
条件は、Ｌ＞Ｍの場合に通常達成される。[0012] The Al-Zn-Mg-based aluminum alloy is a heat-treated type and is used after increasing its strength by artificial aging. However, from the viewpoint of workability, the artificial aging is preferably after plastic deformation. The strength after the artificial aging treatment is desirably 400 N / mm 2 or more, and in the present invention, the Zn content is about 4 to 9%.
And an Al-Zn-Mg-based aluminum alloy containing about 0.5 to 2% of Mg. In addition, this extruded material is resistant to S
From the viewpoint of CC properties, it is desirable that the fibrous structure be large. This is because a coarse recrystallized structure is easily broken from a grain boundary. further,
It is desirable that the maximum tensile residual stress generated at the portion where the plastic deformation is applied is not more than 0.2% proof stress of the material. This condition is usually achieved when L> M.
【００１３】上記押出材の断面形状は、前記公報等にも
記載され周知であるが、典型的には、互いに平行な内外
フランジとそれらを連結する互いに平行な一対のウエブ
からなる。このなかには、フランジ端部が左右に突出し
ていない口型断面のようなものも含まれる。ただし、こ
の典型例のみに限定されるわけではなく、請求項の文言
に沿った種々の断面形状が考えられる。The cross-sectional shape of the above-mentioned extruded material is well-known in the above-mentioned publications and the like. This includes a mouth-shaped cross section in which the flange ends do not protrude left and right. However, the present invention is not limited to this typical example, and various cross-sectional shapes according to the language of the claims can be considered.
【００１４】[0014]
【実施例】表１に示す組成のＡｌ−Ｍｇ−Ｓｉ系アルミ
ニウム合金を常法により溶解し、直径２００ｍｍの鋳塊
に鋳造し、それを４７０℃×８ｈｒでソーキングし、押
出温度４５０℃、押出速度８ｍ／分で押し出し、ファン
により常温まで強制冷却した。押出材の断面形状は、図
６及び図７に示す２種類である。この押出材に対し人工
時効処理を行った後、ＪＩＳ１３Ｂ試験片を採取して下
記要領で機械的性質の測定を行った。また、人工時効処
理を行ったものと行わないものを用意し、それぞれにつ
いて長さ３００ｍｍに切断し、さらに端部の切断及びプ
レス型曲げ（図２〜図５参照）を行った後、下記要領で
耐ＳＣＣ性の測定を行った。各試験Ｎｏ．ごとの押出材
断面形状、プレス型曲げ後の押出材端部形状（記号の意
味は図１と同じ）、プレス型曲げ前の人工時効の有無を
表２に示す。また測定結果を同じく表２に示す。EXAMPLE An Al-Mg-Si-based aluminum alloy having the composition shown in Table 1 was melted by a conventional method, cast into an ingot having a diameter of 200 mm, soaked at 470 ° C for 8 hours, and extruded at 450 ° C. It was extruded at a speed of 8 m / min, and was forcibly cooled to room temperature by a fan. The cross-sectional shapes of the extruded material are two types shown in FIGS. After performing an artificial aging treatment on the extruded material, a JIS13B test piece was sampled, and the mechanical properties were measured in the following manner. In addition, one with and without artificial aging treatment was prepared, each was cut to a length of 300 mm, and the end was cut and press-bent (see FIGS. 2 to 5). Was used to measure the SCC resistance. Each test No. Table 2 shows the cross-sectional shape of the extruded material, the end shape of the extruded material after press-type bending (the meaning of the symbol is the same as in FIG. 1), and the presence or absence of artificial aging before press-type bending. Table 2 also shows the measurement results.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
【００１７】機械的性質；ＪＩＳＺ２２４１に基づいて
引張試験を行い、引張強さ、０．２％耐力及び伸びを測
定した。 耐ＳＣＣ性；供試材の全体を９０℃に加熱した腐食促進
液に浸漬し、２００分までの割れの有無を観察し、２０
０分以内で割れが生じたものを×、２００分以上割れな
かったものを○と評価した。なお、腐食促進液は、Ｃｒ
Ｏ３：３６ｇ／リットル、Ｋ２Ｃｒ２Ｏ７：３０ｇ／リ
ットル、ＮａＣｌ：３ｇリットルの混合水溶液とした。Mechanical properties: Tensile tests were conducted in accordance with JISZ2241 to measure tensile strength, 0.2% proof stress and elongation. SCC resistance: The entire test material was immersed in a corrosion accelerating solution heated to 90 ° C., and observed for cracks for up to 200 minutes.
A sample that cracked within 0 minutes was evaluated as x, and a sample that did not crack for 200 minutes or more was evaluated as ○. The corrosion promoting liquid was Cr
O 3: 36 g / l, K 2 Cr 2 O 7: 30g / l, NaCl: was mixed aqueous solution of 3g liters.
【００１８】表２に示すように、全て０．２％耐力が４
００Ｎ／ｍｍ２以上の高強度であるにも関わらず、Ｌ＞
Ｍの範囲では、耐ＳＣＣ性が良好であった。なお、Ｌ≦
Ｍの範囲では、供試材のウエブ（特に変位の開始点近
傍）に面外への座屈が生じていたが、Ｌ＞Ｍの範囲では
座屈が生じていなかった。Ｌ≦Ｍの範囲では座屈により
局部的に残留応力が大きくなり、耐ＳＣＣ性が悪化した
可能性がある。As shown in Table 2, the 0.2% proof stress was all 4
Despite having a high strength of 00N / mm 2 or more, L>
In the range of M, the SCC resistance was good. Note that L ≦
In the range of M, buckling occurred out of plane on the web of the test material (especially near the starting point of displacement), but in the range of L> M, buckling did not occur. In the range of L ≦ M, the residual stress locally increases due to buckling, and the SCC resistance may have deteriorated.
【００１９】[0019]
【発明の効果】本発明によれば、アルミニウム合金押出
材、特に高強度Ｚｎ−Ｍｇ系アルミニウム合金押出材を
用い、これに端部の切断及び塑性変形を加えたドアビー
ムにおいて、その耐ＳＣＣ性を改善することができる。According to the present invention, an aluminum alloy extruded material, in particular, a high strength Zn-Mg based aluminum alloy extruded material, whose end is cut and plastically deformed, has a SCC resistance of a door beam. Can be improved.
【図１】 本発明に係るドアビームの塑性変形前（ａ）
及び塑性変形後の側面図である。FIG. 1 (a) before plastic deformation of a door beam according to the present invention.
It is a side view after plastic deformation.
【図２】 プレス曲げ型を用いた塑性変形方法を説明す
る図（左右に上型の側面図を示す）である。FIG. 2 is a view for explaining a plastic deformation method using a press bending die (side views of the upper die are shown on the left and right).
【図３】 プレス曲げ型を用いた塑性変形方法を説明す
る図である。FIG. 3 is a diagram illustrating a plastic deformation method using a press bending die.
【図４】 プレス曲げ型を用いた塑性変形方法を説明す
る図である。FIG. 4 is a diagram illustrating a plastic deformation method using a press bending die.
【図５】 プレス曲げ型を用いた塑性変形方法を説明す
る図である。FIG. 5 is a diagram illustrating a plastic deformation method using a press bending die.
【図６】 実施例に用いた押出材の断面図である。FIG. 6 is a cross-sectional view of an extruded material used in Examples.
【図７】 同じく実施例に用いた押出材の断面図であ
る。FIG. 7 is a cross-sectional view of the extruded material used in the example.
１ 押出材 ２、３ フランジ ４ ウエブ 1 Extruded material 2, 3 Flange 4 Web
Claims (3)
からなるアルミニウム合金押出材製ドアビームであり、
その端部が一方のフランジ側から他方のフランジ側へ向
け斜めに切り落され、当該他方のフランジ側を切り落と
された側に向けて変位させる塑性変形が端部に加えられ
て、その一部が取付部とされ、さらに、斜めに切り落と
された端部の前記一方のフランジまでの長さをＬとし、
変位の開始箇所までの長さをＭとしたとき、Ｌ＞Ｍであ
ることを特徴とするアルミニウム合金製ドアビーム。1. A door beam made of an aluminum alloy extruded material comprising inner and outer flanges and a web connecting them,
The end is cut obliquely from one flange side to the other flange side, and plastic deformation for displacing the other flange side toward the cut-off side is applied to the end, and a part of the plastic deformation is applied. L is the length of the end portion cut off obliquely to the one flange,
A door beam made of an aluminum alloy, wherein L> M, where M is the length up to the starting point of the displacement.
ｌ−Ｚｎ−Ｍｇ系アルミニウム合金押出材であることを
特徴とする請求項１に記載されたアルミニウム合金製ド
アビーム。2. The extruded aluminum alloy has high strength A
The aluminum alloy door beam according to claim 1, which is an extruded l-Zn-Mg-based aluminum alloy.
徴とする請求項１又は２に記載されたアルミニウム合金
製ドアビーム。3. The aluminum alloy door beam according to claim 1, wherein the plastic deformation is caused by bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001165979A JP2002362157A (en) | 2001-06-01 | 2001-06-01 | Door beam made of aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001165979A JP2002362157A (en) | 2001-06-01 | 2001-06-01 | Door beam made of aluminum alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002362157A true JP2002362157A (en) | 2002-12-18 |
Family
ID=19008582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001165979A Pending JP2002362157A (en) | 2001-06-01 | 2001-06-01 | Door beam made of aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002362157A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007119904A (en) * | 2005-09-27 | 2007-05-17 | Aisin Keikinzoku Co Ltd | High-strength aluminum alloy extruded product with excellent impact absorption and stress corrosion cracking resistance and method of manufacturing the same |
| JP2007245987A (en) * | 2006-03-17 | 2007-09-27 | Fuji Heavy Ind Ltd | Aluminum alloy extrusions for automotive door beams |
| JP2011144396A (en) * | 2010-01-12 | 2011-07-28 | Kobe Steel Ltd | High strength aluminum alloy extruded material having excellent stress corrosion cracking resistance |
| JP2013100604A (en) * | 2012-12-27 | 2013-05-23 | Kobe Steel Ltd | High strength aluminum alloy extruded material for bumper reinforcement having excellent stress corrosion cracking resistance |
| CN107447141A (en) * | 2017-08-10 | 2017-12-08 | 广东和胜工业铝材股份有限公司 | A kind of electronic product casing high-strength aluminum alloy and preparation method thereof |
-
2001
- 2001-06-01 JP JP2001165979A patent/JP2002362157A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007119904A (en) * | 2005-09-27 | 2007-05-17 | Aisin Keikinzoku Co Ltd | High-strength aluminum alloy extruded product with excellent impact absorption and stress corrosion cracking resistance and method of manufacturing the same |
| JP2007245987A (en) * | 2006-03-17 | 2007-09-27 | Fuji Heavy Ind Ltd | Aluminum alloy extrusions for automotive door beams |
| JP2011144396A (en) * | 2010-01-12 | 2011-07-28 | Kobe Steel Ltd | High strength aluminum alloy extruded material having excellent stress corrosion cracking resistance |
| JP2013100604A (en) * | 2012-12-27 | 2013-05-23 | Kobe Steel Ltd | High strength aluminum alloy extruded material for bumper reinforcement having excellent stress corrosion cracking resistance |
| CN107447141A (en) * | 2017-08-10 | 2017-12-08 | 广东和胜工业铝材股份有限公司 | A kind of electronic product casing high-strength aluminum alloy and preparation method thereof |
| CN107447141B (en) * | 2017-08-10 | 2019-01-11 | 广东和胜工业铝材股份有限公司 | A kind of electronic product casing high-strength aluminum alloy and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107709590B (en) | Sheet metal for motor vehicle bodies with high mechanical strength | |
| CN110395093B (en) | Door beam | |
| CN106795592A (en) | Aluminum alloy product and preparation method | |
| JP6424841B2 (en) | Method of manufacturing molded member | |
| JP2010083381A (en) | Bumper system and method for manufacturing the same | |
| KR20050033455A (en) | Automobile strength member | |
| JP2002362157A (en) | Door beam made of aluminum alloy | |
| JP3772962B2 (en) | Automotive bumper reinforcement | |
| JP4111651B2 (en) | Al-Mg-Si aluminum alloy extruded material for door beam and door beam | |
| JP5288671B2 (en) | Al-Mg-Si-based aluminum alloy extruded material with excellent press workability | |
| JP6465040B2 (en) | Manufacturing method of molded member | |
| JP2007254833A (en) | Aluminum alloy extruded material for tube expanding | |
| JP4311634B2 (en) | Aluminum alloy extrusion for electromagnetic forming | |
| JP3691254B2 (en) | Al-Mg-Si alloy extruded profile for side member and method for producing the same | |
| JPH11264044A (en) | Door beam made of aluminum alloy and its production | |
| JP3272130B2 (en) | Energy absorbing member and method of manufacturing the same | |
| JP4086404B2 (en) | Aluminum alloy door beam | |
| JP2020066768A (en) | Manufacturing method of member made of 7000 series aluminum alloy | |
| JP2002327229A (en) | Extruded aluminum alloy material superior in crushing characteristics | |
| JP4707317B2 (en) | Aluminum blank for press molding | |
| JP3420595B2 (en) | Automotive operation pedal and method of manufacturing the same | |
| JP2001205365A (en) | Hemming method of aluminum alloy plate | |
| JP2005029064A (en) | Energy absorbing member for automobile frame made of aluminum alloy and method for manufacturing the same | |
| JP2001026834A (en) | Impact absorbing member | |
| JP4204105B2 (en) | Aluminum alloy extruded shape with excellent axial crushing properties |