JP2021065927A - Method for joining aluminum material - Google Patents

Method for joining aluminum material Download PDF

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JP2021065927A
JP2021065927A JP2019195190A JP2019195190A JP2021065927A JP 2021065927 A JP2021065927 A JP 2021065927A JP 2019195190 A JP2019195190 A JP 2019195190A JP 2019195190 A JP2019195190 A JP 2019195190A JP 2021065927 A JP2021065927 A JP 2021065927A
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aluminum
wrought material
jig
aluminum wrought
hot water
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JP7184730B2 (en
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今村　美速
Yoshihaya Imamura
美速 今村
智恵子 今井
Chieko Imai
智恵子 今井
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Kobe Steel Ltd
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Priority to PCT/JP2020/023270 priority patent/WO2020255891A1/en
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Abstract

To provide a method for joining an aluminum material, even when an aluminum material having a firm oxide film is made into a complicated three-dimensional shape to be joined, capable improving joining strength without complicating working.SOLUTION: A first aluminum extension material 15 is arranged at an internal space divided between a first fixture 11 and a second fixture 13 arranged so as to face the first fixture 11 and having a molten metal feed port 21 along the first fixture 11. An aluminum molten metal 17 is pressurized and injected from the molten metal feed port 21 toward the first aluminum extension material 15 so as to be collide with the surface of the first aluminum extension material 15, and the collision position of the first aluminum extension material 15 with the aluminum molten metal 17 is dug down. The aluminum molten metal 17 is fluidized into the internal space along the surface of the first aluminum extension material 15 around the collision position together with the removal by the digging down of the first aluminum extension material 15.SELECTED DRAWING: Figure 2B

Description

本発明は、アルミニウム材の接合方法に関する。 The present invention relates to a method for joining aluminum materials.

複数の金属材を面接合する技術として、クラッド圧延がある。クラッド圧延は、複数の金属材を圧延ロールに圧下して、金属材同士を熱間又は冷間で圧着させる技術である。クラッド圧延では、圧着面の変形により酸化被膜が破壊されるため、アルミニウム合金等の、表面に酸化被膜が形成されやすい材料であっても良好な圧着面を得ることができる。
このようなクラッド圧延で金属材を圧着する場合、酸化被膜を確実に破壊するために圧下率を高くする必要があり、複数回の圧延が必要となることもある。このため、複数の金属材の間に中間層を配置し、中間層の一部を液相化して圧延することにより圧下率を低減させる技術が提案されている（特許文献１）。 Clad rolling is a technique for surface joining a plurality of metal materials. Clad rolling is a technique in which a plurality of metal materials are pressed onto a rolling roll to press the metal materials together hot or cold. In clad rolling, the oxide film is destroyed by the deformation of the pressure-bonded surface, so that a good pressure-bonded surface can be obtained even with a material such as an aluminum alloy in which an oxide film is easily formed on the surface.
When crimping a metal material by such clad rolling, it is necessary to increase the rolling reduction ratio in order to reliably break the oxide film, and it may be necessary to roll a plurality of times. Therefore, a technique has been proposed in which an intermediate layer is arranged between a plurality of metal materials, and a part of the intermediate layer is liquid-phased and rolled to reduce the rolling reduction ratio (Patent Document 1).

国際公開第２０１３／０６５１６０号公報International Publication No. 2013/065160

これらの技術は、平坦な板の接合しか行うことができず、接合体も必然的に板状となるため、自動車部品のプレス成型品などの三次元形状を有する部材の接合には採用できない。
ところで、さまざまな形状を有する部材を、形状の制約を受けずに面接合する技術として、ろう付け接合や固相拡散接合が考えられる。ろう付けは、接合面全体に満遍なくろう材を広げる必要があるため、施工が難しく、更に専用のろう材や熱処理炉の準備が必要となる。また、固相拡散接合技術は、アルミニウム合金のような酸化被膜が形成されやすい金属材料には、拡散による原子の移動を酸化被膜がブロックするため適用できなかった。 Since these techniques can only join flat plates and the joined body is inevitably plate-shaped, they cannot be used for joining members having a three-dimensional shape such as press-molded products of automobile parts.
By the way, brazing bonding and solid phase diffusion bonding can be considered as a technique for surface bonding members having various shapes without being restricted by the shape. Brazing is difficult because it is necessary to spread the brazing material evenly over the entire joint surface, and it is also necessary to prepare a dedicated brazing material and a heat treatment furnace. Further, the solid phase diffusion bonding technique cannot be applied to a metal material such as an aluminum alloy in which an oxide film is easily formed because the oxide film blocks the movement of atoms due to diffusion.

そして、近年、鋼材に代わる軽量な構造材としてアルミニウム材の適用が積極的に進められている。このアルミニウム材に対しては、上記した面接合する技術の場合よりも更に高い接合強度を実現させる要望が高い。例えば、接合面に突起部を設けることで、接合面での滑りが抑止されて接合強度を向上させることができるが、加工が煩雑となり、施工性やコストの面で課題が多い。 In recent years, the application of aluminum as a lightweight structural material to replace steel has been actively promoted. There is a high demand for this aluminum material to realize a higher bonding strength than in the case of the above-mentioned surface bonding technique. For example, by providing a protrusion on the joint surface, slippage on the joint surface can be suppressed and the joint strength can be improved, but the processing becomes complicated and there are many problems in terms of workability and cost.

そこで本発明は、酸化被膜を生じやすいアルミニウム材を、複雑な三次元形状にして接合する場合であっても、加工を煩雑にすることなく接合強度を向上できるアルミニウム材の接合方法を提供することを目的とする。 Therefore, the present invention provides a method for joining an aluminum material, which can improve the joining strength without complicating processing, even when the aluminum material which easily forms an oxide film is joined in a complicated three-dimensional shape. With the goal.

本発明は下記の構成からなる。
（１） 第１治具と、前記第１治具に対向して配置されて給湯口を有する第２治具と、の間に画成される内部空間に、第１アルミニウム展伸材を前記第１治具に沿わせて配置する工程と、
アルミニウム溶湯を、前記給湯口から前記第１アルミニウム展伸材に向けて加圧して注入し、前記第１アルミニウム展伸材の表面に衝突させて、前記第１アルミニウム展伸材の前記アルミニウム溶湯との衝突位置を掘り下げる工程と、
前記アルミニウム溶湯を、前記第１アルミニウム展伸材の掘り下げによる除去分と共に、前記衝突位置の周囲の前記第１アルミニウム展伸材の表面に沿って前記内部空間に流動させる工程と、
をこの順で実施するアルミニウム材の接合方法。
（２） 第１治具と、前記第１治具に対向して配置されて給湯口を有する第２治具と、の間に画成される内部空間に、第１アルミニウム展伸材を前記第１治具に沿わせて配置し、第２アルミニウム展伸材を前記第１アルミニウム展伸材から離間させて前記第２治具に沿わせて配置する工程と、
アルミニウム溶湯を、前記給湯口から前記内部空間に向けて加圧して注入し、前記第２アルミニウム展伸材に貫通孔を形成する工程と、
前記アルミニウム溶湯を、前記貫通孔を通じて前記内部空間に加圧して注入して、前記第１アルミニウム展伸材の表面に衝突させて、前記第１アルミニウム展伸材の前記アルミニウム溶湯との衝突位置を掘り下げる工程と、
前記アルミニウム溶湯を、前記第１アルミニウム展伸材の掘り下げによる除去分と共に、前記衝突位置の周囲の前記第１アルミニウム展伸材及び前記第２アルミニウム展伸材の表面に沿って前記内部空間に流動させる工程と、
をこの順で実施するアルミニウム材の接合方法。 The present invention has the following configuration.
(1) The first aluminum wrought material is placed in the internal space defined between the first jig and the second jig which is arranged so as to face the first jig and has a hot water supply port. The process of arranging along the first jig and
The molten aluminum is pressurized and injected from the hot water supply port toward the first aluminum wrought material, collides with the surface of the first aluminum wrought material, and is combined with the molten aluminum of the first aluminum wrought material. The process of digging into the collision position of
A step of flowing the molten aluminum into the internal space along the surface of the first aluminum wrought material around the collision position together with a portion removed by digging the first aluminum wrought material.
A method of joining aluminum materials in this order.
(2) The first aluminum wrought material is placed in the internal space defined between the first jig and the second jig which is arranged so as to face the first jig and has a hot water supply port. A step of arranging the second aluminum wrought material along the first jig, separating the second aluminum wrought material from the first aluminum wrought material, and arranging the second aluminum wrought material along the second jig.
A step of forming a through hole in the second aluminum wrought material by pressurizing and injecting molten aluminum from the hot water supply port toward the internal space.
The molten aluminum is pressurized and injected into the internal space through the through hole to collide with the surface of the first aluminum wrought material, and the collision position of the first aluminum wrought material with the molten aluminum is determined. The process of digging down and
The molten aluminum flows into the internal space along the surfaces of the first aluminum wrought material and the second aluminum wrought material around the collision position together with the amount removed by digging the first aluminum wrought material. And the process of making
A method of joining aluminum materials in this order.

本発明によれば、酸化被膜が生じやすいアルミニウム材を、複雑な三次元形状にして接合する場合であっても、加工を煩雑にすることなく接合強度を向上できる。 According to the present invention, even when an aluminum material on which an oxide film is likely to be formed is bonded into a complicated three-dimensional shape, the bonding strength can be improved without complicating the processing.

図１は、アルミニウム材を接合する治具を模式的に示す要部構成図である。FIG. 1 is a configuration diagram of a main part schematically showing a jig for joining aluminum materials. 図２Ａは、治具の内部空間に第１アルミニウム展伸材を配置した様子を示す工程説明図である。FIG. 2A is a process explanatory view showing a state in which the first aluminum wrought material is arranged in the internal space of the jig. 図２Ｂは、図２Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。FIG. 2B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 2A. 図３Ａは、アルミニウム溶湯が内部空間に充填され、凝固するまでの様子を段階的に示す工程説明図である。FIG. 3A is a process explanatory view showing the state in which the molten aluminum is filled in the internal space and solidified in stages. 図３Ｂは、アルミニウム溶湯が内部空間に充填され、凝固するまでの様子を段階的に示す工程説明図である。FIG. 3B is a process explanatory view showing the state in which the molten aluminum is filled in the internal space and solidified in stages. 図３Ｃは、アルミニウム溶湯が内部空間に充填され、凝固するまでの様子を段階的に示す工程説明図である。FIG. 3C is a process explanatory view showing the state in which the molten aluminum is filled in the internal space and solidified in stages. 図３Ｄは、アルミニウム溶湯が内部空間に充填され、凝固するまでの様子を段階的に示す工程説明図である。FIG. 3D is a process explanatory view showing the state in which the molten aluminum is filled in the internal space and solidified in stages. 図３Ｅは、アルミニウム溶湯が内部空間に充填され、凝固するまでの様子を段階的に示す工程説明図である。FIG. 3E is a process explanatory view showing the state in which the molten aluminum is filled in the internal space and solidified in stages. 図４Ａは、治具内の内部空間にアルミニウム展伸材を配置した様子を示す工程説明図である。FIG. 4A is a process explanatory view showing a state in which the aluminum wrought material is arranged in the internal space inside the jig. 図４Ｂは、図４Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。FIG. 4B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 4A. 図５Ａは、治具内の内部空間に複数の貫通孔と凹部を設けた様子を示す工程説明図である。FIG. 5A is a process explanatory view showing a state in which a plurality of through holes and recesses are provided in the internal space inside the jig. 図５Ｂは、図５Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。FIG. 5B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 5A. 図６Ａは、治具内の内部空間に一対のアルミニウム展伸材を配置した様子を示す工程説明図である。FIG. 6A is a process explanatory view showing a state in which a pair of aluminum wrought materials are arranged in the internal space inside the jig. 図６Ｂは、図６Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。FIG. 6B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 6A. 図７Ａは、治具内の内部空間に下孔を有するアルミニウム展伸材を配置した様子を示す工程説明図である。FIG. 7A is a process explanatory view showing a state in which an aluminum wrought material having a pilot hole is arranged in the internal space inside the jig. 図７Ｂは、図７Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。FIG. 7B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 7A. 図８Ａは、治具内の内部空間に一対の管状のアルミニウム展伸材を配置した様子を示す工程説明図である。FIG. 8A is a process explanatory view showing a state in which a pair of tubular aluminum wrought materials are arranged in the internal space inside the jig. 図８Ｂは、図８Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。FIG. 8B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 8A.

以下、本発明の実施形態について、図面を参照して詳細に説明する。
図１は、アルミニウム材を接合する治具１００を模式的に示す要部構成図である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a configuration diagram of a main part schematically showing a jig 100 for joining aluminum materials.

治具１００は、互いに対向して配置される第１治具１１と、第２治具１３と、を備える。第１治具１１と第２治具１３とは、不図示の移動機構によって、互いに離反及び接近する方向に移動自在となっている。第１治具１１と第２治具１３との間に画成される内部空間には、第１治具１１に沿わせて板状の第１アルミニウム展伸材１５が配置される。第１アルミニウム展伸材１５と第２治具１３との間には隙間１９が設けられる。第２治具１３は、内部空間に連通する給湯口２１を有する。 The jig 100 includes a first jig 11 and a second jig 13 that are arranged so as to face each other. The first jig 11 and the second jig 13 are movable in a direction in which they are separated from each other and approach each other by a moving mechanism (not shown). In the internal space defined between the first jig 11 and the second jig 13, a plate-shaped first aluminum wrought material 15 is arranged along the first jig 11. A gap 19 is provided between the first aluminum wrought material 15 and the second jig 13. The second jig 13 has a hot water supply port 21 that communicates with the internal space.

第１治具１１は、第１アルミニウム展伸材１５の一方の面（外側面）１５ａに当接する当接面１１ａを有し、第１アルミニウム展伸材１５を支持する。第１アルミニウム展伸材１５は、第１治具１１の当接面１１ａに載置した形態であってもよく、不図示の固定手段を用いて当接面１１ａに固定する形態であってもよい。第２治具１３は、第１アルミニウム展伸材１５の他方の面（内側面）１５ｂとの間に隙間１９を有して、第１アルミニウム展伸材１５に対向して配置される。 The first jig 11 has a contact surface 11a that abuts on one surface (outer surface) 15a of the first aluminum wrought material 15 and supports the first aluminum wrought material 15. The first aluminum wrought material 15 may be placed on the contact surface 11a of the first jig 11, or may be fixed to the contact surface 11a by using a fixing means (not shown). Good. The second jig 13 has a gap 19 between the first aluminum wrought material 15 and the other surface (inner side surface) 15b, and is arranged so as to face the first aluminum wrought material 15.

第２治具１３の給湯口２１は、不図示のアルミニウム溶湯１７の供給源に接続され、アルミニウム溶湯１７を隙間１９に供給する。給湯口２１は、少なくとも隙間１９と接続される出口部２１ａで、第１アルミニウム展伸材１５の内側面１５ｂの垂直方向に沿って形成されていることが好ましい。また、給湯口２１の軸線方向は、第１アルミニウム展伸材１５の内側面１５ｂの垂直方向から傾斜していてもよい。この給湯口２１の開口形状は、円形、楕円形、正方向、長方形、三角形等の種々の形状にすることができる。 The hot water supply port 21 of the second jig 13 is connected to a supply source of the molten aluminum 17 (not shown), and supplies the molten aluminum 17 to the gap 19. The hot water supply port 21 is at least an outlet portion 21a connected to the gap 19 and is preferably formed along the vertical direction of the inner side surface 15b of the first aluminum wrought material 15. Further, the axial direction of the hot water supply port 21 may be inclined from the vertical direction of the inner side surface 15b of the first aluminum wrought material 15. The opening shape of the hot water supply port 21 can be various shapes such as a circular shape, an elliptical shape, a positive direction, a rectangular shape, and a triangular shape.

矢印Ｆ１で示すように、給湯口２１から内部空間の隙間１９にアルミニウム溶湯１７を注入すると、アルミニウム溶湯１７は、まず、第１アルミニウム展伸材１５の表面（内側面１５ｂ）に衝突する。次いで、流動方向を変更して第１アルミニウム展伸材１５の内側面１５ｂに沿って流動する。 As shown by the arrow F1, when the molten aluminum 17 is injected from the hot water supply port 21 into the gap 19 of the internal space, the molten aluminum 17 first collides with the surface (inner side surface 15b) of the first aluminum wrought material 15. Next, the flow direction is changed to flow along the inner side surface 15b of the first aluminum wrought material 15.

これにより、第1アルミニウム展伸材の内側面１５ｂと第２治具１３との間の隙間１９にアルミニウム溶湯１７が充填される。アルミニウム溶湯１７が凝固すると、第１アルミニウム展伸材１５とアルミニウム溶湯１７とが一体にされた接合体が得られる。 As a result, the molten aluminum 17 is filled in the gap 19 between the inner side surface 15b of the first aluminum wrought material and the second jig 13. When the molten aluminum 17 solidifies, a bonded body in which the first aluminum wrought material 15 and the molten aluminum 17 are integrated is obtained.

上記した治具１００は、第１治具１１と第２治具１３とが鉛直方向に重なる縦型の構成であるが、水平方向に重なる横型の構成であってもよい。治具１００の各部のレイアウトは、図示を省略している、第１治具１１及び第２治具１３の各支持機構、第１アルミニウム展伸材１５を型内に固定する固定部材、アルミニウム溶湯を給湯口２１に供給する供給部、型温度を制御する温度制御部、等の各部の配置形態に応じて適宜選択できる。 The jig 100 described above has a vertical configuration in which the first jig 11 and the second jig 13 overlap in the vertical direction, but may have a horizontal configuration in which the first jig 11 and the second jig 13 overlap in the horizontal direction. The layout of each part of the jig 100 is not shown, the support mechanisms of the first jig 11 and the second jig 13, the fixing member for fixing the first aluminum wrought material 15 in the mold, and the molten aluminum. Can be appropriately selected according to the arrangement form of each part such as the supply part for supplying the hot water supply port 21 and the temperature control part for controlling the mold temperature.

第１アルミニウム展伸材１５には、２０００系、３０００系、４０００系、５０００系、６０００系、７０００系のアルミニウム合金、又は１０００系の純アルミニウムの展伸材が利用できる。溶接性の観点から、特に５０００系、６０００系、７０００系のアルミニウム合金であることが好ましい。 As the first aluminum wrought material 15, 2000 series, 3000 series, 4000 series, 5000 series, 6000 series, 7000 series aluminum alloys, or 1000 series pure aluminum wrought material can be used. From the viewpoint of weldability, 5000 series, 6000 series, and 7000 series aluminum alloys are particularly preferable.

第１アルミニウム展伸材１５は、板材に限らず、押出形材（パイプ材や、中空、中実、異形断面の形材）、鍛造材（板材、リブ付材）であってもよい。さらに、第１アルミニウム展伸材１５の表面に、予備処理としてブラスト処理、エッチング処理、ブラシ研磨処理等の各種表面処理を施してもよい。その場合には、第１アルミニウム展伸材１５の表面の有機物が除去され、第１アルミニウム展伸材１５と、アルミニウム溶湯１７が凝固したアルミニウム鋳物との接合品質が向上する。 The first aluminum wrought material 15 is not limited to a plate material, and may be an extruded shape material (pipe material, hollow, solid, or deformed cross-section shape material) or a forged material (plate material, ribbed material). Further, the surface of the first aluminum wrought material 15 may be subjected to various surface treatments such as a blast treatment, an etching treatment, and a brush polishing treatment as preliminary treatments. In that case, the organic matter on the surface of the first aluminum wrought material 15 is removed, and the bonding quality between the first aluminum wrought material 15 and the aluminum casting in which the molten aluminum 17 is solidified is improved.

アルミニウム溶湯１７の材料としては、例えば、ＡＣ４Ｃ、ＡＣ４ＣＨ、ＡＣ２Ｂ（ＪＩＳ Ｈ ５２０２）、又はＡＤＣ１２（ＪＩＳ Ｈ ５３０２）等が挙げられる。以下、第１アルミニウム展伸材１５等のアルミニウム展伸材、及びアルミニウム溶湯１７を「アルミニウム材」と呼ぶこともある。 Examples of the material of the molten aluminum 17 include AC4C, AC4CH, AC2B (JIS H 5202), ADC 12 (JIS H 5302) and the like. Hereinafter, the aluminum wrought material such as the first aluminum wrought material 15 and the molten aluminum 17 may be referred to as an “aluminum material”.

また、ここでいう内部空間とは、第１アルミニウム展伸材１５及びアルミニウム溶湯１７よりも融点の高い素材からなる治具１００（第１治具１１、第２治具１３）によって形成され、アルミニウム溶湯１７が流動する流路である。この流路は、治具１００に形成された空洞や溝と第１アルミニウム展伸材１５とで画成される空間であってもよい。第１治具１１と第２治具１３により画成される内部空間の形状は任意であり、使用する第１アルミニウム展伸材１５の形状、及びその接合面の形状等に応じた適宜な形状に設定される。 Further, the internal space referred to here is formed by a jig 100 (first jig 11, second jig 13) made of a material having a melting point higher than that of the first aluminum wrought material 15 and the molten aluminum 17, and is made of aluminum. This is a flow path through which the molten metal 17 flows. This flow path may be a space defined by a cavity or groove formed in the jig 100 and the first aluminum wrought material 15. The shape of the internal space defined by the first jig 11 and the second jig 13 is arbitrary, and an appropriate shape according to the shape of the first aluminum wrought material 15 to be used, the shape of the joint surface thereof, and the like. Is set to.

＜アルミニウム材の接合方法の基本手順＞
以下に説明するアルミニウム材の接合方法は、アルミニウム展伸材とアルミニウム溶湯とを簡単、かつ高強度に接合する方法であって、基本的に以下の工程（１）、（２）をこの順で実施するものである。
（１）アルミニウム溶湯１７を、給湯口２１から第１アルミニウム展伸材１５に向けて加圧して注入し、第１アルミニウム展伸材１５の表面（内側面）１５ｂに衝突させて、第１アルミニウム展伸材１５のアルミニウム溶湯１７との衝突位置を掘り下げる工程。
（２）アルミニウム溶湯１７を、第１アルミニウム展伸材１５の掘り下げによる除去分と共に、衝突位置の周囲の第１アルミニウム展伸材１５の表面（内側面）１５ｂに沿って内部空間に流動させる工程。 <Basic procedure for joining aluminum materials>
The method of joining the aluminum material described below is a method of joining the aluminum wrought material and the molten aluminum with high strength easily and with high strength. Basically, the following steps (1) and (2) are performed in this order. It is to be carried out.
(1) The molten aluminum 17 is pressurized and injected from the hot water supply port 21 toward the first aluminum wrought material 15 and collides with the surface (inner side surface) 15b of the first aluminum wrought material 15 to cause the first aluminum. A process of digging into the collision position of the wrought material 15 with the molten aluminum 17.
(2) A step of flowing the molten aluminum 17 into the internal space along the surface (inner side surface) 15b of the first aluminum wrought material 15 around the collision position together with the amount removed by digging the first aluminum wrought material 15. ..

上記の工程によれば、アルミニウム溶湯を、図１に矢印Ｆ１で示すように、治具１００内の内部空間に配置された第１アルミニウム展伸材１５に向けて加圧して注入することで、アルミニウム溶湯１７が第１アルミニウム展伸材１５の内側面１５ｂに勢いよく衝突する。このとき、第１アルミニウム展伸材１５の衝突位置では、アルミニウム溶湯１７の衝突による外力が第１アルミニウム展伸材１５に作用して、第１アルミニウム展伸材１５の衝突位置が掘り下げられる。つまり、アルミニウム溶湯１７によって衝突位置の材料表層が徐々に除去されて、衝突位置に減肉部が形成される。減肉部は、アルミニウム溶湯１７の衝突が続けられることで、その衝突エネルギーによって第１アルミニウム展伸材１５の厚さ方向へ更に成長（減肉）する。アルミニウム溶湯１７の衝突方向は、第１アルミニウム展伸材１５の内側面１５ｂの垂直方向であるのが好ましいが、内部空間の形状等に応じて適宜変更してもよい。この衝突方向は、給湯口２１の軸線方向を変更することや、給湯口２１に適宜な形状のゲートを設けること等により調整可能である。 According to the above step, as shown by the arrow F1 in FIG. 1, the molten aluminum is pressurized and injected toward the first aluminum wrought material 15 arranged in the internal space inside the jig 100. The molten aluminum 17 vigorously collides with the inner side surface 15b of the first aluminum wrought material 15. At this time, at the collision position of the first aluminum wrought material 15, an external force due to the collision of the molten aluminum 17 acts on the first aluminum wrought material 15, and the collision position of the first aluminum wrought material 15 is dug down. That is, the material surface layer at the collision position is gradually removed by the molten aluminum 17, and a thinned portion is formed at the collision position. As the collision of the molten aluminum 17 continues, the thinned portion further grows (thinns) in the thickness direction of the first aluminum wrought material 15 due to the collision energy. The collision direction of the molten aluminum 17 is preferably the direction perpendicular to the inner side surface 15b of the first aluminum wrought material 15, but it may be appropriately changed depending on the shape of the internal space and the like. This collision direction can be adjusted by changing the axial direction of the hot water supply port 21 or by providing a gate having an appropriate shape at the hot water supply port 21.

衝突後のアルミニウム溶湯１７は、第１アルミニウム展伸材１５の衝突位置から内側面１５ｂに沿って広がり、接合面となる内側面１５ｂを覆う。これにより、第１アルミニウム展伸材１５の内側面１５ｂと、アルミニウム溶湯１７が凝固したアルミニウム鋳物とが固相拡散接合された、高強度な接合状態が得られる。上記したアルミニウム溶湯１７の供給開始から内部空間の充填完了までの時間は、内部空間の容積にもよるが、１秒以下、好ましくは０．８秒以下、さらに好ましくは０．５秒以下である。このような短時間で、第１アルミニウム展伸材１５とアルミニウム鋳物３３とが高強度に接合された接合体が得られる。 The molten aluminum 17 after the collision spreads from the collision position of the first aluminum wrought material 15 along the inner side surface 15b and covers the inner side surface 15b which is a joint surface. As a result, a high-strength bonded state is obtained in which the inner side surface 15b of the first aluminum wrought material 15 and the aluminum casting in which the molten aluminum 17 is solidified are solid-phase diffusion-bonded. The time from the start of supply of the molten aluminum 17 to the completion of filling of the internal space depends on the volume of the internal space, but is 1 second or less, preferably 0.8 seconds or less, and more preferably 0.5 seconds or less. .. In such a short time, a bonded body in which the first aluminum wrought material 15 and the aluminum casting 33 are bonded with high strength can be obtained.

また、治具１００は、図１に矢印Ｆ２で示すように、隙間１９から溢れ出たアルミニウム溶湯１７を貯留するオーバーフロー（不図示）を備えることが好ましい。オーバーフローは、一般的な射出成形技術で使用される構造のものが利用できる。 Further, as shown by an arrow F2 in FIG. 1, the jig 100 preferably includes an overflow (not shown) for storing the molten aluminum 17 overflowing from the gap 19. The overflow can be of a structure used in general injection molding techniques.

治具１００の内部空間にオーバーフローを接続した場合には、給湯口２１へアルミニウム溶湯１７を供給する際、まず、アルミニウム溶湯１７を給湯口２１から隙間１９に充填させる。そして、アルミニウム溶湯１７が隙間１９から溢れ出し、オーバーフローへ流れ着いてオーバーフローに貯留された後、アルミニウム溶湯１７の供給を停止する。これによれば、アルミニウム溶湯１７は隙間１９内を淀むことなく流動する。 When the overflow is connected to the internal space of the jig 100, when the molten aluminum 17 is supplied to the hot water supply port 21, the molten aluminum 17 is first filled in the gap 19 from the hot water supply port 21. Then, the molten aluminum 17 overflows from the gap 19, flows to the overflow and is stored in the overflow, and then the supply of the molten aluminum 17 is stopped. According to this, the molten aluminum 17 flows in the gap 19 without stagnation.

治具１００は、第１治具１１，第２治具１３の少なくともいずれかを加熱・保温するヒータを備えることが好ましい。その場合、ヒータを制御する不図示の温度コントローラは、隙間１９にアルミニウム溶湯１７が注入される前に予めヒータを加熱しておき、第１アルミニウム展伸材１５、第２治具１３を４００℃〜５００℃に保持する。これによれば、アルミニウム溶湯１７の流路となる隙間１９が、例えば３ｍｍ以下の薄肉であっても、隙間１９を流動するアルミニウム溶湯１７が流動途中で凝固せず、淀みのないスムーズな湯流れとなる。 The jig 100 preferably includes a heater that heats and retains at least one of the first jig 11 and the second jig 13. In that case, the temperature controller (not shown) that controls the heater preheats the heater before the molten aluminum 17 is injected into the gap 19, and heats the first aluminum wrought material 15 and the second jig 13 at 400 ° C. Keep at ~ 500 ° C. According to this, even if the gap 19 serving as the flow path of the molten aluminum 17 is, for example, a thin wall of 3 mm or less, the molten aluminum 17 flowing through the gap 19 does not solidify in the middle of the flow, and a smooth flow without stagnation. It becomes.

隙間１９内に流動するアルミニウム溶湯１７が、隙間１９内に充填された後、冷却されて凝固したら、第１治具１１と第２治具１３とを相互に離間する。そして、第１アルミニウム展伸材１５とアルミニウム鋳物とが接合された接合体を治具１００から取り出す。この接合体においては、第１アルミニウム展伸材１５の接合面がアルミニウム鋳物と固相拡散接合されている。なお、アルミニウム鋳物は、給湯口２１により成形される部分等の不要箇所（オーバーフロー等）が、適宜に切断される。 When the molten aluminum 17 flowing in the gap 19 is filled in the gap 19 and then cooled and solidified, the first jig 11 and the second jig 13 are separated from each other. Then, the joint body in which the first aluminum wrought material 15 and the aluminum casting are joined is taken out from the jig 100. In this joint, the joint surface of the first aluminum wrought material 15 is solid-phase diffusion bonded to the aluminum casting. In the aluminum casting, unnecessary parts (overflow, etc.) such as a portion formed by the hot water supply port 21 are appropriately cut.

以下、上記したアルミニウム溶湯１７を隙間１９へ注入して、第１アルミニウム展伸材１５とアルミニウム鋳物３３とを接合する工程を、それぞれ異なる接合形態を有する第１〜第６の接合形態を例に説明する。なお、接合形態はこれらの形態に限らず、互いの形態を組み合わせることもできる。 Hereinafter, the steps of injecting the above-mentioned molten aluminum 17 into the gap 19 and joining the first aluminum wrought material 15 and the aluminum casting 33 will be described by taking the first to sixth joining forms having different joining forms as an example. explain. The joining form is not limited to these forms, and each form can be combined.

＜第１の接合形態＞
図２Ａは、治具の内部空間に第１アルミニウム展伸材を配置した様子を示す工程説明図である。図２Ｂは、図２Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。 <First joining form>
FIG. 2A is a process explanatory view showing a state in which the first aluminum wrought material is arranged in the internal space of the jig. FIG. 2B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 2A.

（突起部の形成）
図２Ａに示すように、第１治具１１と第２治具１３とを離間させ、平板状の第１アルミニウム展伸材１５を治具間に挿入し、第１アルミニウム展伸材１５を第１治具１１に沿わせて設置する。そして、第１治具１１と第２治具１３とを、所定の位置まで接近させて固定する。この状態で給湯口２１からアルミニウム溶湯１７を注入する。すると、図２Ｂに示すように、第１アルミニウム展伸材１５のアルミニウム溶湯１７の衝突位置の表層が徐々に除去されて、衝突位置に減肉部３１が形成される。また、衝突後のアルミニウム溶湯は、第１アルミニウム展伸材１５の内部空間に表出した内側面１５ｂに沿って流動して、アルミニウム溶湯１７を覆う。 (Formation of protrusions)
As shown in FIG. 2A, the first jig 11 and the second jig 13 are separated from each other, the flat plate-shaped first aluminum wrought material 15 is inserted between the jigs, and the first aluminum wrought material 15 is inserted. 1 Install along the jig 11. Then, the first jig 11 and the second jig 13 are brought close to a predetermined position and fixed. In this state, the molten aluminum 17 is injected from the hot water supply port 21. Then, as shown in FIG. 2B, the surface layer of the first aluminum wrought material 15 at the collision position of the molten aluminum 17 is gradually removed, and the thinned portion 31 is formed at the collision position. Further, the molten aluminum after the collision flows along the inner side surface 15b exposed in the internal space of the first aluminum wrought material 15 to cover the molten aluminum 17.

そして、治具を冷却してアルミニウム溶湯１７が凝固した後は、第１アルミニウム展伸材１５の接合面となる内側面１５ｂがアルミニウム鋳物３３で覆われる。また、アルミニウム鋳物３３には、上記の減肉部３１でアルミニウム溶湯１７が凝固した突起部３５が一体に形成される。突起部３５は、第１アルミニウム展伸材１５を厚さ方向に凹ませた領域に形成され、給湯口２１の軸方向に沿って突出している。本構成の突起部３５は、第１アルミニウム展伸材１５の厚さ内に形成される。 Then, after the jig is cooled and the molten aluminum 17 is solidified, the inner side surface 15b, which is the joint surface of the first aluminum wrought material 15, is covered with the aluminum casting 33. Further, in the aluminum casting 33, a protrusion 35 in which the molten aluminum 17 is solidified is integrally formed in the thinned portion 31 described above. The protrusion 35 is formed in a region where the first aluminum wrought material 15 is recessed in the thickness direction, and protrudes along the axial direction of the hot water supply port 21. The protrusion 35 of this configuration is formed within the thickness of the first aluminum wrought material 15.

突起部３５は、第１アルミニウム展伸材１５とアルミニウム鋳物３３との接合面積を増加させ、面外に突出することによって、接合面での滑り止め効果を発揮する。例えば、第１アルミニウム展伸材１５とアルミニウム鋳物３３との接合体に、接合面と平行な向きの外力や、接合面内のねじり力が作用した場合に、突起部３５が、第１アルミニウム展伸材１５とアルミニウム鋳物３３との係合部となって、接合面での剥離が生じにくくなる。突起部３５が形成されることで、第１アルミニウム展伸材１５とアルミニウム鋳物３３とを平坦面同士の面接続した場合と比較して、接合強度を大きく向上できる。 The protrusion 35 increases the joint area between the first aluminum wrought material 15 and the aluminum casting 33 and projects out of the plane to exert a non-slip effect on the joint surface. For example, when an external force in a direction parallel to the joint surface or a twisting force in the joint surface acts on the joint body of the first aluminum wrought material 15 and the aluminum casting 33, the protrusion 35 expands the first aluminum. It becomes an engaging portion between the drawn material 15 and the aluminum casting 33, and peeling at the joint surface is less likely to occur. By forming the protrusion 35, the joint strength can be greatly improved as compared with the case where the first aluminum wrought material 15 and the aluminum casting 33 are surface-connected between the flat surfaces.

（固相拡散接合）
また、第１アルミニウム展伸材１５の接合面とアルミニウム鋳物３３とは、互いに固相拡散接合され、高い接合強度が得られる。このように、第１アルミニウム展伸材１５とアルミニウム鋳物３３とが固相拡散接合されることについては、次のように推測できる。 (Solid phase diffusion bonding)
Further, the joint surface of the first aluminum wrought material 15 and the aluminum casting 33 are solid-phase diffusion bonded to each other, and high bonding strength can be obtained. As described above, it can be inferred that the first aluminum wrought material 15 and the aluminum casting 33 are solid-phase diffusion-bonded as follows.

図３Ａ〜図３Ｅは、アルミニウム溶湯が流路に充填され、凝固するまでの様子を段階的に示す工程説明図である。 3A to 3E are process explanatory views showing a stepwise state in which the molten aluminum is filled in the flow path and solidified.

図３Ａに示すように、アルミニウム溶湯の流路となる隙間１９に、第１アルミニウム展伸材１５を、その内側面１５ｂ（接合面）を露出させて配置する。一般に、金属材である第１アルミニウム展伸材１５の内側面１５ｂには、酸化膜や油分等の有機物、塵埃等の異物を含む表層３７が形成されており、金属母材がそのまま表出していることはない。 As shown in FIG. 3A, the first aluminum wrought material 15 is arranged in the gap 19 which is the flow path of the molten aluminum so that the inner side surface 15b (joint surface) thereof is exposed. Generally, a surface layer 37 containing an oxide film, an organic substance such as oil, and a foreign substance such as dust is formed on the inner surface 15b of the first aluminum wrought material 15 which is a metal material, and the metal base material is exposed as it is. There is no such thing.

次に、アルミニウム溶湯を、図２Ａに示す給湯口２１から高圧で隙間１９に向けて噴射する。すると、給湯口２１及び隙間１９には時系列的に２つの流れが発生する。すなわち、アルミニウム溶湯１７の液滴を含む先行流と、先行流に続いて隙間１９内を流動するアルミニウム溶湯からなる後行流とが発生する。 Next, the molten aluminum is sprayed from the hot water supply port 21 shown in FIG. 2A toward the gap 19 at high pressure. Then, two flows are generated in the hot water supply port 21 and the gap 19 in chronological order. That is, a leading flow containing droplets of the molten aluminum 17 and a trailing flow composed of the molten aluminum flowing in the gap 19 following the leading flow are generated.

つまり、図３Ｂに示すように、隙間１９内で第１アルミニウム展伸材１５に沿って溶滴４１を含む先行流が移動すると、先行流に含まれる溶滴４１は、その移動途中で隙間１９の内壁面との接触や、流路内の周囲雰囲気によって抜熱されて一部が凝固し、微粒子４３となる。 That is, as shown in FIG. 3B, when the preceding flow containing the droplet 41 moves along the first aluminum wrought material 15 in the gap 19, the droplet 41 contained in the preceding flow moves in the gap 19 during the movement. The heat is removed by the contact with the inner wall surface of the aluminum and the surrounding atmosphere in the flow path, and a part of the heat is solidified to become fine particles 43.

発生した微粒子４３は、先行流の中で第１アルミニウム展伸材１５との衝突を繰り返し、図３Ｃに示すように第１アルミニウム展伸材１５の表層３７を削り取る。すると、第１アルミニウム展伸材１５には、表層３７が除去された新生面４５が露出する。 The generated fine particles 43 repeatedly collide with the first aluminum wrought material 15 in the preceding flow, and scrape off the surface layer 37 of the first aluminum wrought material 15 as shown in FIG. 3C. Then, the new surface 45 from which the surface layer 37 has been removed is exposed on the first aluminum wrought material 15.

そして、図３Ｄに示すように、上記した先行流に次いでアルミニウム溶湯１７である後行流が第１アルミニウム展伸材１５の位置に到達すると、図３Ｅに示すように新生面４５がアルミニウム溶湯１７によって覆われる。第１アルミニウム展伸材１５に新生面４５が露出してから、その新生面４５がアルミニウム溶湯１７で覆われるまでの時間は極めて短い。したがって、新生面４５には、アルミニウム鋳物３３との接合強度に影響を及ぼす厚さの酸化膜が形成されることない。 Then, as shown in FIG. 3D, when the trailing flow, which is the molten aluminum 17 following the preceding flow, reaches the position of the first aluminum wrought material 15, the new surface 45 is formed by the molten aluminum 17 as shown in FIG. 3E. Be covered. The time from the exposure of the new surface 45 to the first aluminum wrought material 15 until the new surface 45 is covered with the molten aluminum 17 is extremely short. Therefore, an oxide film having a thickness that affects the bonding strength with the aluminum casting 33 is not formed on the new surface 45.

そして、第１アルミニウム展伸材１５の新生面４５を、アルミニウムの融点より低い固相接合温度にしてアルミニウム溶湯１７で覆い、隙間１９のアルミニウム溶湯１７を所定の圧力と時間で保持する。この工程により、第１アルミニウム展伸材１５の新生面４５と、アルミニウム溶湯１７が凝固したアルミニウム鋳物３３との間に固相拡散が生じ、双方が固相拡散接合される。こうして、第１アルミニウム展伸材１５の接合面（新生面４５）は、高強度な固相拡散接合状態でアルミニウム鋳物３３と接合される。 Then, the new surface 45 of the first aluminum wrought material 15 is covered with the molten aluminum 17 at a solid phase bonding temperature lower than the melting point of aluminum, and the molten aluminum 17 in the gap 19 is held at a predetermined pressure and time. By this step, solid-phase diffusion occurs between the new surface 45 of the first aluminum wrought material 15 and the aluminum casting 33 in which the molten aluminum 17 is solidified, and both are solid-phase diffusion-bonded. In this way, the joint surface (new surface 45) of the first aluminum wrought material 15 is joined to the aluminum casting 33 in a high-strength solid-state diffusion bonding state.

上記のように、第１アルミニウム展伸材１５を治具１００の内部空間に接合面を露出させて配置し、隙間１９にアルミニウム溶湯１７を高圧で注入することで、第１アルミニウム展伸材１５の接合面に新生面を形成する。形成した新生面は、直ちにアルミニウム溶湯１７で覆われる。そのため、第１アルミニウム展伸材１５とアルミニウム鋳物３３とは容易に固相拡散接合され、高強度に接合される。 As described above, the first aluminum wrought material 15 is arranged in the internal space of the jig 100 with the joint surface exposed, and the molten aluminum 17 is injected into the gap 19 at a high pressure to form the first aluminum wrought material 15. A new surface is formed on the joint surface of the aluminum. The formed new surface is immediately covered with the molten aluminum 17. Therefore, the first aluminum wrought material 15 and the aluminum casting 33 are easily solid-phase diffusion bonded and bonded with high strength.

ここでのアルミニウムの溶滴は、圧力をかけたアルミニウム溶湯を噴射した際に生じる溶湯の飛沫であるが、これに限らない。アルミニウムの溶滴は、他の公知の手段により生成した溶滴であってもよい。また、溶滴の生成、新生面の形成、新生面を溶湯で覆う各工程は、大気中で行うことができるが、真空中や不活性ガス雰囲気中で実施してもよい。その場合、新生面での酸化膜の形成をより確実に防止できる。 The aluminum droplets here are droplets of the molten metal generated when the molten aluminum solution under pressure is sprayed, but the droplets are not limited to this. The aluminum droplet may be a droplet produced by other known means. Further, each step of forming droplets, forming a new surface, and covering the new surface with a molten metal can be performed in the atmosphere, but may be performed in a vacuum or in an inert gas atmosphere. In that case, the formation of an oxide film on the new surface can be prevented more reliably.

また、隙間１９へのアルミニウム溶湯１７の注入時に、不図示のヒータにより第１アルミニウム展伸材１５、第１治具１１、第２治具１３を加熱、保温した場合には、例えば、厚さが３ｍｍ以下の薄肉部を形成する際、この薄肉部となる領域にアルミニウム溶湯１７をスムーズに流動させることができる。これにより、アルミニウム鋳物３３を、欠肉やブローホールが殆ど存在しない高品質な状態にできる。 When the first aluminum wrought material 15, the first jig 11, and the second jig 13 are heated and kept warm by a heater (not shown) when the molten aluminum 17 is injected into the gap 19, for example, the thickness is increased. When forming a thin-walled portion having a thickness of 3 mm or less, the molten aluminum 17 can be smoothly flowed in the region to be the thin-walled portion. As a result, the aluminum casting 33 can be brought into a high quality state with almost no filling or blow holes.

また、隙間１９から溢れ出るアルミニウム溶湯１７の一部を、不図示のオーバーフローに排出することで、隙間１９内のアルミニウム溶湯１７の流れをスムーズにできる。これによって、流路内でのアルミニウム溶湯１７の淀みが抑制される。 Further, by discharging a part of the molten aluminum 17 overflowing from the gap 19 to an overflow (not shown), the flow of the molten aluminum 17 in the gap 19 can be smoothed. As a result, the stagnation of the molten aluminum 17 in the flow path is suppressed.

第１アルミニウム展伸材１５とアルミニウム鋳物３３との固相拡散接合に関しては、以下に説明する他の接合形態についても同様の効果が得られる。そのため、以降の各接合形態については、固相拡散接合に関しての説明は省略する。 Regarding the solid-phase diffusion bonding between the first aluminum wrought material 15 and the aluminum casting 33, the same effect can be obtained with other bonding forms described below. Therefore, the description of the solid phase diffusion bonding will be omitted for each of the following bonding forms.

＜第２の接合形態＞
図４Ａは、治具内の内部空間にアルミニウム展伸材を配置した様子を示す工程説明図である。図４Ｂは、図４Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。 <Second joining form>
FIG. 4A is a process explanatory view showing a state in which the aluminum wrought material is arranged in the internal space inside the jig. FIG. 4B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 4A.

本接合形態の第１治具１１Ａには、図４Ａに示すように、第１アルミニウム展伸材１５との当接面１１ａにおける給湯口２１に対向する位置に、凹部５１を設けている。凹部５１は、給湯口２１の軸線Ｌを中心に、給湯口２１の開口面積より大きい開口面積であることが好ましい。給湯口２１の開口が円形である場合、凹部５１の内径は、給湯口２１の内径よりも大径にするのが好ましい。 As shown in FIG. 4A, the first jig 11A of the present joint form is provided with a recess 51 at a position facing the hot water supply port 21 on the contact surface 11a with the first aluminum wrought material 15. The recess 51 preferably has an opening area larger than the opening area of the hot water supply port 21 around the axis L of the hot water supply port 21. When the opening of the hot water supply port 21 is circular, the inner diameter of the recess 51 is preferably larger than the inner diameter of the hot water supply port 21.

図４Ｂに示すように、アルミニウム溶湯１７を給湯口２１から第１アルミニウム展伸材１５に向けて注入すると、前述の第１の接合形態の場合と同様に、第１アルミニウム展伸材１５のアルミニウム溶湯１７との衝突位置に減肉部３１（図２Ｂ参照）が形成される。この減肉部が軸線Ｌに沿って成長し、第１アルミニウム展伸材１５を厚さ方向に貫通して湯道１５ｃを形成する。減肉部が薄くなりアルミニウム溶湯１７が第１アルミニウム展伸材１５を貫通すると、給湯口２１と凹部５１とが連通して、アルミニウム溶湯１７が湯道１５ｃを通じて凹部５１に充填される。 As shown in FIG. 4B, when the molten aluminum 17 is injected from the hot water supply port 21 toward the first aluminum wrought material 15, the aluminum of the first aluminum wrought material 15 is similar to the case of the first joining form described above. A wall thinning portion 31 (see FIG. 2B) is formed at a collision position with the molten metal 17. This thinned portion grows along the axis L and penetrates the first aluminum wrought material 15 in the thickness direction to form a runner 15c. When the thinned portion becomes thin and the molten aluminum 17 penetrates the first aluminum wrought material 15, the hot water supply port 21 and the recess 51 communicate with each other, and the molten aluminum 17 is filled in the recess 51 through the runner 15c.

隙間１９及び凹部５１がアルミニウム溶湯１７で充填され、アルミニウム溶湯１７が凝固すると、給湯口２１から第１アルミニウム展伸材１５の湯道１５ｃまでの間、及び凹部５１には、第１アルミニウム展伸材１５の外側面１５ａと内側面１５ｂとを厚さ方向に挟む係止部５３が形成される。係止部５３は、給湯口２１から湯道１５ｃまでの間に形成される軸部５５と、凹部５１により形成されて軸部５５に接続される頭部５６と、を有する。この係止部５３は、第１アルミニウム展伸材１５を、湯道１５ｃから外側にはみ出た頭部５６が、隙間１９（図４（Ａ）参照）に形成されたアルミニウム鋳物３３との間で挟み込む。つまり、第１アルミニウム展伸材１５とアルミニウム鋳物３３とをリベット止めするように接合する。これにより、第１アルミニウム展伸材１５とアルミニウム鋳物３３との接合強度が向上する。 When the gap 19 and the recess 51 are filled with the molten aluminum 17 and the molten aluminum 17 solidifies, the first aluminum stretch is formed between the hot water supply port 21 and the runner 15c of the first aluminum wrought material 15 and in the recess 51. A locking portion 53 is formed that sandwiches the outer surface 15a and the inner surface 15b of the material 15 in the thickness direction. The locking portion 53 has a shaft portion 55 formed between the hot water supply port 21 and the runner 15c, and a head portion 56 formed by the recess 51 and connected to the shaft portion 55. In the locking portion 53, the first aluminum wrought material 15 is provided between the first aluminum wrought material 15 and the aluminum casting 33 in which the head portion 56 protruding outward from the runner 15c is formed in the gap 19 (see FIG. 4 (A)). Insert it. That is, the first aluminum wrought material 15 and the aluminum casting 33 are joined so as to be riveted. As a result, the joint strength between the first aluminum wrought material 15 and the aluminum casting 33 is improved.

＜第３の接合形態＞
図５Ａは、治具内の内部空間に複数の貫通孔と凹部を設けた様子を示す工程説明図である。図５Ｂは、図５Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。 <Third joint form>
FIG. 5A is a process explanatory view showing a state in which a plurality of through holes and recesses are provided in the internal space inside the jig. FIG. 5B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 5A.

本接合形態の第１治具１１Ｂと第２治具１３Ａは、前述した図４Ｂに示す係止部５３が複数箇所に形成されるように構成される。図５Ａに示すように、第２治具１３Ａには、複数（一例として３個）の給湯口２１が設けてある。また、第１治具１１Ｂには、それぞれの給湯口２１に対向する位置に、前述した凹部５１をそれぞれ設けている。 The first jig 11B and the second jig 13A of the present joining form are configured so that the locking portions 53 shown in FIG. 4B described above are formed at a plurality of locations. As shown in FIG. 5A, the second jig 13A is provided with a plurality of (three as an example) hot water supply ports 21. Further, the first jig 11B is provided with the above-mentioned recesses 51 at positions facing the hot water supply ports 21.

図５Ｂに示すように、アルミニウム溶湯１７を複数の給湯口２１から、それぞれ第１アルミニウム展伸材１５に向けて注入すると、第１アルミニウム展伸材１５の互いに異なる位置に、複数の係止部５３が形成される。この構成によれば、第１アルミニウム展伸材１５とアルミニウム鋳物３３との接合強度を更に向上できる。また、係止部５３を等間隔に配置して、均等な接合強度にすることや、場所によって配置間隔を広く又は狭くして、所望の接合強度分布にすることもできる。例えば、周囲と比較して高い接合強度が必要となる箇所が予めわかっている場合には、その箇所の係止部５３の配置密度を周囲より高めることで、接合体の機械的強度を効率よく向上できる。 As shown in FIG. 5B, when the molten aluminum 17 is injected from the plurality of hot water supply ports 21 toward the first aluminum wrought material 15, a plurality of locking portions are placed at different positions of the first aluminum wrought material 15. 53 is formed. According to this configuration, the joint strength between the first aluminum wrought material 15 and the aluminum casting 33 can be further improved. Further, the locking portions 53 can be arranged at equal intervals to obtain uniform bonding strength, or the arrangement intervals can be widened or narrowed depending on the location to obtain a desired bonding strength distribution. For example, when a location where a higher bonding strength is required compared to the surroundings is known in advance, the mechanical strength of the bonded body can be efficiently increased by increasing the arrangement density of the locking portion 53 at that location from the surroundings. Can be improved.

＜第４の接合形態＞
図６Ａは、治具内の内部空間に一対のアルミニウム展伸材を配置した様子を示す工程説明図である。図６Ｂは、図６Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。 <Fourth joining form>
FIG. 6A is a process explanatory view showing a state in which a pair of aluminum wrought materials are arranged in the internal space inside the jig. FIG. 6B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 6A.

本接合形態では、図６Ａに示すように、第１治具１１と第２治具１３との間の内部空間の第１治具１１側に配置された第１アルミニウム展伸材１５に対向して、第２アルミニウム展伸材６３を配置している。第２アルミニウム展伸材６３は、第１アルミニウム展伸材１５の内側面１５ｂとの間に隙間１９を有して、第２治具１３の当接面１３ａに沿わせて配置される。第２アルミニウム展伸材６３は、図示しない適宜の固定手段によって第２治具１３に固定される。その他の構成は、前述の図２Ａに示す構成と同様である。 In this joining mode, as shown in FIG. 6A, the internal space between the first jig 11 and the second jig 13 faces the first aluminum wrought material 15 arranged on the first jig 11 side. The second aluminum wrought material 63 is arranged. The second aluminum wrought material 63 has a gap 19 with the inner side surface 15b of the first aluminum wrought material 15 and is arranged along the contact surface 13a of the second jig 13. The second aluminum wrought material 63 is fixed to the second jig 13 by an appropriate fixing means (not shown). Other configurations are the same as those shown in FIG. 2A described above.

この構成では、第２治具１３に形成された給湯口２１の出口側が、第２アルミニウム展伸材６３によって塞がれている。 In this configuration, the outlet side of the hot water supply port 21 formed in the second jig 13 is closed by the second aluminum wrought material 63.

上記構成で給湯口２１からアルミニウム溶湯１７を加圧して注入すると、アルミニウム溶湯１７は、給湯口２１に対向する第２アルミニウム展伸材６３に衝突すると共に、この衝突位置の第２アルミニウム展伸材６３を圧力によって開孔させる。これにより、第２アルミニウム展伸材６３には、図６Ｂに示すように、給湯口２１に対応する形状の貫通孔６３ｃが形成される。 When the molten aluminum 17 is pressurized and injected from the hot water supply port 21 with the above configuration, the molten aluminum 17 collides with the second aluminum wrought material 63 facing the hot water supply port 21 and the second aluminum wrought material at this collision position. 63 is opened by pressure. As a result, as shown in FIG. 6B, the second aluminum wrought material 63 is formed with a through hole 63c having a shape corresponding to the hot water supply port 21.

第２アルミニウム展伸材６３に貫通孔６３ｃが形成されると、アルミニウム溶湯１７が給湯口２１から貫通孔６３ｃを通って隙間１９に注入される。 When the through hole 63c is formed in the second aluminum wrought material 63, the molten aluminum 17 is injected into the gap 19 from the hot water supply port 21 through the through hole 63c.

このとき注入されるアルミニウム溶湯１７は、給湯口２１と貫通孔６３ｃを通って第１アルミニウム展伸材１５に衝突する。そして、図２Ｂに示す場合と同様に、この衝突位置に減肉部３１が形成される。減肉部３１は、第１アルミニウム展伸材１５の厚さ方向に成長して、アルミニウム溶湯１７の凝固後に、アルミニウム鋳物３３による突起部３５を形成する。 The molten aluminum 17 injected at this time collides with the first aluminum wrought material 15 through the hot water supply port 21 and the through hole 63c. Then, as in the case shown in FIG. 2B, the wall thinning portion 31 is formed at this collision position. The thinned portion 31 grows in the thickness direction of the first aluminum wrought material 15 and forms a protruding portion 35 made of the aluminum casting 33 after the molten aluminum 17 is solidified.

本接合形態によれば、厚さ方向に重なる第１アルミニウム展伸材１５と第２アルミニウム展伸材６３とは、アルミニウム鋳物３３により内側面１５同士が接合されることで、一体にされる。また、給湯口２１の位置では、アルミニウム鋳物３３に、第１アルミニウム展伸材１５の厚さ方向に突出する突起部３５が形成される。そして、第２アルミニウム展伸材６３には貫通孔６３ｃが形成され、貫通孔６３ｃの内周面がアルミニウム鋳物３３と接合する。このように、突起部３５と貫通孔６３ｃが形成されることで、アルミニウム鋳物３３の第１アルミニウム展伸材１５と第２アルミニウム展伸材６３との接合強度を向上できる。また、アルミニウム溶湯１７の注入時に第２アルミニウム展伸材６３に貫通孔６３ｃを形成するため、例えば、予め下孔を加工する場合と比較して工数を低減でき、施工性を向上できる。 According to this joining form, the first aluminum wrought material 15 and the second aluminum wrought material 63, which overlap in the thickness direction, are integrated by joining the inner side surfaces 15 to each other by the aluminum casting 33. Further, at the position of the hot water supply port 21, a protrusion 35 is formed on the aluminum casting 33 so as to protrude in the thickness direction of the first aluminum wrought material 15. Then, a through hole 63c is formed in the second aluminum wrought material 63, and the inner peripheral surface of the through hole 63c is joined to the aluminum casting 33. By forming the protrusion 35 and the through hole 63c in this way, the joint strength between the first aluminum wrought material 15 and the second aluminum wrought material 63 of the aluminum casting 33 can be improved. Further, since the through hole 63c is formed in the second aluminum wrought material 63 when the molten aluminum 17 is injected, the number of man-hours can be reduced and the workability can be improved as compared with the case where the prepared hole is machined in advance.

＜第５の接合形態＞
図７Ａは、治具内の内部空間に下孔を有するアルミニウム展伸材を配置した様子を示す工程説明図である。図７Ｂは、図７Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。 <Fifth joining form>
FIG. 7A is a process explanatory view showing a state in which an aluminum wrought material having a pilot hole is arranged in the internal space inside the jig. FIG. 7B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 7A.

本接合形態では、図７Ａに示すように、前述した図６Ａに示す第２アルミニウム展伸材６３における給湯口２１と対向する位置に、予め下孔６３ｄを設けている。その他の構成は第４の接合形態と同様である。下孔６３ｄは、ドリル等により加工した貫通孔であってもよいが、板材の一部を除去した切り欠きであってもよい。つまり、ここでいう下孔６３ｄは、給湯口２１が隙間１９と連通すればよく、その形態は問わない。 In this joint form, as shown in FIG. 7A, a pilot hole 63d is provided in advance at a position facing the hot water supply port 21 in the second aluminum wrought material 63 shown in FIG. 6A described above. Other configurations are the same as those of the fourth joining form. The prepared hole 63d may be a through hole processed by a drill or the like, or may be a notch from which a part of the plate material is removed. That is, the prepared hole 63d referred to here may have any form as long as the hot water supply port 21 communicates with the gap 19.

上記構成で給湯口２１からアルミニウム溶湯１７を注入すると、図７Ｂに示すように、アルミニウム溶湯１７は、第２アルミニウム展伸材６３の下孔６３ｄを通って隙間１９に充填される。また、注入されたアルミニウム溶湯１７は、第１アルミニウム展伸材１５の内側面１５ｂに衝突し、第１アルミニウム展伸材１５に減肉部３１を形成する。減肉部３１は、第１アルミニウム展伸材１５の厚さ方向に成長する。そして、図２Ｂに示す場合と同様に、アルミニウム溶湯１７の凝固後に、アルミニウム鋳物３３の突起部３５を形成する。 When the molten aluminum 17 is injected from the hot water supply port 21 with the above configuration, the molten aluminum 17 is filled in the gap 19 through the prepared hole 63d of the second aluminum wrought material 63, as shown in FIG. 7B. Further, the injected molten aluminum 17 collides with the inner side surface 15b of the first aluminum wrought material 15 to form a wall thinning portion 31 on the first aluminum wrought material 15. The thinned portion 31 grows in the thickness direction of the first aluminum wrought material 15. Then, as in the case shown in FIG. 2B, after the molten aluminum 17 is solidified, the protrusion 35 of the aluminum casting 33 is formed.

本構成によれば、アルミニウム溶湯１７の注入前に第２アルミニウム展伸材６３に下孔６３ｄが設けられているため、給湯口２１に注入するアルミニウム溶湯１７が隙間１９に直接注入できる。これにより、隙間１９へのアルミニウム溶湯１７の充填をいち早く完了でき、タクトタイムを短縮できる。 According to this configuration, since the pilot hole 63d is provided in the second aluminum wrought material 63 before the injection of the molten aluminum 17, the molten aluminum 17 to be injected into the hot water supply port 21 can be directly injected into the gap 19. As a result, the filling of the molten aluminum 17 into the gap 19 can be completed quickly, and the tact time can be shortened.

図７Ａ，図７Ｂにおいては、下孔６３ｄを給湯口２１と略等しい大きさで示しているが、例えば、給湯口２１よりも開口面積を大きくしてもよい。その場合には、第２アルミニウム展伸材６３の第２治具１３に対する位置決め精度を軽減でき、施工性を向上できる。また、下孔６３ｄを給湯口２１よりも開口面積の小さい孔にする場合には、隙間１９内に供給されるアルミニウム溶湯１７の流速が速くなる。これにより、第１アルミニウム展伸材１５への衝突速度が増加して減肉部３１の形成を促進できる。また、第１アルミニウム展伸材１５の内側面１５ｂと、第２アルミニウム展伸材６３Ａの内側面６３ｂに沿って流動するアルミニウム溶湯１７の流速が速められ、前述した新生面の形成を更に促進できる。 In FIGS. 7A and 7B, the prepared hole 63d is shown to have a size substantially equal to that of the hot water supply port 21, but for example, the opening area may be larger than that of the hot water supply port 21. In that case, the positioning accuracy of the second aluminum wrought material 63 with respect to the second jig 13 can be reduced, and the workability can be improved. Further, when the prepared hole 63d is made into a hole having an opening area smaller than that of the hot water supply port 21, the flow velocity of the molten aluminum 17 supplied into the gap 19 becomes high. As a result, the collision speed with the first aluminum wrought material 15 is increased, and the formation of the thinned portion 31 can be promoted. Further, the flow velocity of the molten aluminum 17 flowing along the inner side surface 15b of the first aluminum wrought material 15 and the inner side surface 63b of the second aluminum wrought material 63A is increased, and the formation of the above-mentioned new surface can be further promoted.

＜第６の接合形態＞
次に、一対の管状のアルミニウム展伸材同士を接合する場合を説明する。
図８Ａは、治具内の内部空間に一対の管状のアルミニウム展伸材を配置した様子を示す工程説明図である。図８Ｂは、図８Ａに示す内部空間にアルミニウム溶湯を注入した様子を示す工程説明図である。 <Sixth joining form>
Next, a case where a pair of tubular aluminum wrought materials are joined to each other will be described.
FIG. 8A is a process explanatory view showing a state in which a pair of tubular aluminum wrought materials are arranged in the internal space inside the jig. FIG. 8B is a process explanatory view showing a state in which the molten aluminum is injected into the internal space shown in FIG. 8A.

図８Ａに示すように、ここで用いる一対のアルミニウム展伸材は、互いに径寸法の異なる管形状（円筒形状）である第１アルミニウム展伸材６５と第２アルミニウム展伸材６７である。第１アルミニウム展伸材６５と第２アルミニウム展伸材６７は、前述の第１治具として機能する略円柱状の中子７１に支持される。中子７１は、軸方向に沿って小径部７１ａと、小径部７１ａより大径な大径部７１ｂとを有する。小径部７１ａの外周面７３には、第１アルミニウム展伸材６５が内周面６５ａを当接させて支持される。大径部７１ｂの外周面７５には、第２アルミニウム展伸材６７が、内周面６７ａを当接させて支持される。中子７１は、小径部７１ａの外径が第１アルミニウム展伸材６５の内径と等しいか、わずかに小さく、大径部７１ｂの外径が第２アルミニウム展伸材６７の内径と等しいか、わずかに小さい。 As shown in FIG. 8A, the pair of aluminum wrought materials used here are a first aluminum wrought material 65 and a second aluminum wrought material 67 having different pipe shapes (cylindrical shapes). The first aluminum wrought material 65 and the second aluminum wrought material 67 are supported by a substantially cylindrical core 71 that functions as the first jig described above. The core 71 has a small diameter portion 71a along the axial direction and a large diameter portion 71b having a diameter larger than that of the small diameter portion 71a. The first aluminum wrought material 65 is supported by abutting the inner peripheral surface 65a on the outer peripheral surface 73 of the small diameter portion 71a. The second aluminum wrought material 67 is supported by abutting the inner peripheral surface 67a on the outer peripheral surface 75 of the large diameter portion 71b. In the core 71, whether the outer diameter of the small diameter portion 71a is equal to or slightly smaller than the inner diameter of the first aluminum wrought material 65, and the outer diameter of the large diameter portion 71b is equal to the inner diameter of the second aluminum wrought material 67. Slightly small.

また、中子７１に支持された第１アルミニウム展伸材６５と第２アルミニウム展伸材６７は、管端部が軸方向に関して互いに径方向に重なる重ね部７７を有する。重ね部７７においては、第１アルミニウム展伸材６５の外周面６５ｂと、第２アルミニウム展伸材６７の内周面６７ａとの間に径方向の隙間１９が形成される。 Further, the first aluminum wrought material 65 and the second aluminum wrought material 67 supported by the core 71 have an overlapping portion 77 in which the pipe end portions overlap each other in the radial direction with respect to the axial direction. In the overlapping portion 77, a radial gap 19 is formed between the outer peripheral surface 65b of the first aluminum wrought material 65 and the inner peripheral surface 67a of the second aluminum wrought material 67.

上記のように中子７１に支持された第１アルミニウム展伸材６５と第２アルミニウム展伸材６７と、中子７１の端面７１ｃとを覆って、前述の第２治具として機能する筒状割り型７９が配置される。筒状割り型７９は、図８Ａの上側に配置される一方の割り型７９Ａと、下方に配置される他方の割り型７９Ｂとを有する。 As described above, the tubular shape that covers the first aluminum wrought material 65 and the second aluminum wrought material 67 supported by the core 71 and the end face 71c of the core 71 and functions as the above-mentioned second jig. A split jig 79 is arranged. The tubular split mold 79 has one split mold 79A arranged on the upper side of FIG. 8A and the other split mold 79B arranged on the lower side.

一方の割り型７９Ａ、他方の割り型７９Ｂには、それぞれ給湯口２１が設けられている。給湯口２１は、割り型７９Ａ，７９Ｂのそれぞれに１箇所設けてもよく、複数箇所に設けてもよい。また、一方の割り型７９Ａと他方の割り型７９Ｂのいずれか一方にのみ、給湯口２１を設けた構成であってもよい。給湯口２１の内周側は、第２アルミニウム展伸材６７によって塞がれる。 One split type 79A and the other split type 79B are each provided with a hot water supply port 21. The hot water supply port 21 may be provided at one location on each of the split molds 79A and 79B, or may be provided at a plurality of locations. Further, the hot water supply port 21 may be provided only in either one of the split mold 79A and the other split mold 79B. The inner peripheral side of the hot water supply port 21 is closed by the second aluminum wrought material 67.

本構成によれば、給湯口２１からアルミニウム溶湯１７を注入すると、図８Ｂに示すように、給湯口２１に対向する第２アルミニウム展伸材６３の部分が開口して、貫通孔６７ｂが形成される。そして、アルミニウム溶湯１７は、形成された貫通孔６７ｂを通じて第１アルミニウム展伸材６５に衝突する。これにより、第１アルミニウム展伸材６５に減肉部３１が形成され、アルミニウム溶湯１７が隙間１９に充填される。 According to this configuration, when the molten aluminum 17 is injected from the hot water supply port 21, the portion of the second aluminum wrought material 63 facing the hot water supply port 21 opens to form a through hole 67b. To. Then, the molten aluminum 17 collides with the first aluminum wrought material 65 through the formed through hole 67b. As a result, the thinned portion 31 is formed in the first aluminum wrought material 65, and the molten aluminum 17 is filled in the gap 19.

アルミニウム溶湯１７の凝固後は、第１アルミニウム展伸材６５の減肉部３１の位置に、アルミニウム鋳物３３の突起部３５が形成される。 After the molten aluminum 17 is solidified, the protrusion 35 of the aluminum casting 33 is formed at the position of the thinned portion 31 of the first aluminum wrought material 65.

本接合形態によれば、管状のアルミニウム展伸材の場合でも、アルミニウム鋳物３３によって、互いの重ね部７７を高強度に接合できる。また、突起部３５と貫通孔６７ｂが形成されることで、アルミニウム鋳物３３の第１アルミニウム展伸材１５と第２アルミニウム展伸材６３との接合強度を更に向上できる。 According to this joining form, even in the case of a tubular aluminum wrought material, the overlapping portions 77 can be joined to each other with high strength by the aluminum casting 33. Further, by forming the protrusion 35 and the through hole 67b, the joint strength between the first aluminum wrought material 15 and the second aluminum wrought material 63 of the aluminum casting 33 can be further improved.

また、本接合形態においても、前述した図７Ｂに示すように、第２アルミニウム展伸材６７の給湯口２１に対向する部位に、前述した下孔を予め形成してもよい。その場合、アルミニウム溶湯１７を隙間１９に直接注入できるため、隙間１９へのアルミニウム溶湯１７の充填をいち早く完了でき、タクトタイムを短縮できる。 Further, also in this joint form, as shown in FIG. 7B described above, the prepared hole described above may be formed in advance at a portion of the second aluminum wrought material 67 facing the hot water supply port 21. In that case, since the molten aluminum 17 can be directly injected into the gap 19, the filling of the molten aluminum 17 in the gap 19 can be completed quickly, and the tact time can be shortened.

このように、本発明は上記の実施形態に限定されるものではなく、実施形態の各構成を相互に組み合わせることや、明細書の記載、並びに周知の技術に基づいて、当業者が変更、応用することも本発明の予定するところであり、保護を求める範囲に含まれる。 As described above, the present invention is not limited to the above-described embodiment, and can be modified or applied by those skilled in the art based on the combination of the configurations of the embodiments with each other, the description of the specification, and the well-known technique. This is also the subject of the present invention and is included in the scope for which protection is sought.

以上の通り、本明細書には次の事項が開示されている。
（１） 第１治具と、前記第１治具に対向して配置されて給湯口を有する第２治具と、の間に画成される内部空間に、第１アルミニウム展伸材を前記第１治具に沿わせて配置する工程と、
アルミニウム溶湯を、前記給湯口から前記第１アルミニウム展伸材に向けて加圧して注入し、前記第１アルミニウム展伸材の表面に衝突させて、前記第１アルミニウム展伸材の前記アルミニウム溶湯との衝突位置を掘り下げる工程と、
前記アルミニウム溶湯を、前記第１アルミニウム展伸材の掘り下げによる除去分と共に、前記衝突位置の周囲の前記第１アルミニウム展伸材の表面に沿って前記内部空間に流動させる工程と、
をこの順で実施するアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、第１アルミニウム展伸材とアルミニウム鋳物との接合を、アルミニウム溶湯の供給によって瞬時に行うことができ、しかも互いの接合強度を向上できる。 As described above, the following matters are disclosed in this specification.
(1) The first aluminum wrought material is placed in the internal space defined between the first jig and the second jig which is arranged so as to face the first jig and has a hot water supply port. The process of arranging along the first jig and
The molten aluminum is pressurized and injected from the hot water supply port toward the first aluminum wrought material, collides with the surface of the first aluminum wrought material, and is combined with the molten aluminum of the first aluminum wrought material. The process of digging into the collision position of
A step of flowing the molten aluminum into the internal space along the surface of the first aluminum wrought material around the collision position together with a portion removed by digging the first aluminum wrought material.
A method of joining aluminum materials in this order.
According to this method of joining aluminum materials, the first aluminum wrought material and the aluminum casting can be joined instantly by supplying the molten aluminum, and the joining strength between them can be improved.

（２） 前記第１アルミニウム展伸材の前記衝突位置を貫通しない深さまで掘り下げる（１）に記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、アルミニウム展伸材にアルミニウム鋳物による突起部が形成されるため、突起部とアルミニウム展伸材との接合面積が増加して、接合強度を向上できる。 (2) The method for joining an aluminum material according to (1), wherein the first aluminum wrought material is dug down to a depth that does not penetrate the collision position.
According to this method of joining the aluminum material, since the protrusions made of the aluminum casting are formed on the aluminum wrought material, the joining area between the protrusions and the aluminum wrought material can be increased, and the joining strength can be improved.

（３） 前記第１アルミニウム展伸材の前記衝突位置を、前記アルミニウム溶湯の衝突により貫通させる（１）に記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、第１アルミニウム展伸材の全厚にわたってアルミニウム鋳物による突起部が形成されるため、アルミニウム展伸材とアルミニウム鋳物との接合強度をより向上できる。 (3) The method for joining an aluminum material according to (1), wherein the collision position of the first aluminum wrought material is penetrated by the collision of the molten aluminum.
According to this method of joining the aluminum material, since the protrusions made of the aluminum casting are formed over the entire thickness of the first aluminum wrought material, the joining strength between the aluminum wrought material and the aluminum casting can be further improved.

（４） 前記第１治具は、前記第２治具に形成された前記給湯口に対向する位置に、前記給湯口の開口面積より広い開口面積を有する凹部を有し、
前記第１アルミニウム展伸材が貫通して形成される湯道を通じて、前記凹部に前記アルミニウム溶湯を充填する（３）に記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、アルミニウム溶湯が充填された凹部には、アルミニウム溶湯の凝固後に、アルミニウム展伸材を厚さ方向に挟む係止部が形成される。この係止部がアルミニウム展伸材を挟み込むことで、アルミニウム展伸材とアルミニウム鋳物との接合強度を向上できる。 (4) The first jig has a recess formed in the second jig at a position facing the hot water supply port and having an opening area wider than the opening area of the hot water supply port.
The method for joining an aluminum material according to (3), wherein the recess is filled with the molten aluminum through a runner formed through the first aluminum wrought material.
According to this method of joining the aluminum material, a locking portion for sandwiching the aluminum wrought material in the thickness direction is formed in the recess filled with the molten aluminum after the molten aluminum is solidified. By sandwiching the aluminum wrought material between the locking portions, the joint strength between the aluminum wrought material and the aluminum casting can be improved.

（５） 前記第２治具の複数箇所に前記給湯口が設けられ、
前記第１治具の前記給湯口に対向する位置それぞれに前記凹部が設けられ、
それぞれの前記凹部に前記アルミニウム溶湯を充填する（４）に記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、アルミニウム鋳物が第１アルミニウム展伸材を貫通して凹部にまで至る箇所を複数形成することで、第１アルミニウム展伸材とアルミニウム鋳物との接合強度を更に向上できる。また、強度が必要な箇所に給湯口と凹部とを周囲と比較して多く設けることで、その箇所の接合強度を向上できる。 (5) The hot water supply port is provided at a plurality of locations of the second jig.
The recess is provided at each position of the first jig facing the hot water supply port.
The method for joining an aluminum material according to (4), wherein each of the recesses is filled with the molten aluminum.
According to this method of joining the aluminum material, the joining strength between the first aluminum wrought material and the aluminum casting is further increased by forming a plurality of places where the aluminum casting penetrates the first aluminum wrought material and reaches the recesses. Can be improved. Further, by providing a large number of hot water supply ports and recesses in places where strength is required as compared with the surroundings, it is possible to improve the joint strength at those places.

（６） 前記第１アルミニウム展伸材を配置する工程は、切り欠き又は貫通孔を有する第２アルミニウム展伸材を、前記切り欠き又は貫通孔によって前記給湯口が前記内部空間に露出される位置で、前記第１アルミニウム展伸材から離間させて前記第１治具に沿わせて設ける工程を更に有する（１）〜（５）のいずれか１つに記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、第１アルミニウム展伸材と第２アルミニウム展伸材の内側面同士の間にアルミニウム鋳物が形成され、第１アルミニウム展伸材と第２アルミニウム展伸材との接合強度が向上する。 (6) In the step of arranging the first aluminum wrought material, the second aluminum wrought material having a notch or a through hole is exposed at a position where the hot water supply port is exposed to the internal space by the notch or the through hole. The method for joining an aluminum material according to any one of (1) to (5), further comprising a step of providing the aluminum wrought material along the first jig at a distance from the first aluminum wrought material.
According to this method of joining the aluminum materials, an aluminum casting is formed between the inner surfaces of the first aluminum wrought material and the second aluminum wrought material, and the first aluminum wrought material and the second aluminum wrought material are formed. The joint strength of aluminum is improved.

（７） 前記アルミニウム展伸材は、平板形状である（１）〜（６）のいずれか１つに記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、平板状のアルミニウム展伸材を高強度にアルミニウム鋳物と接合できる。 (7) The method for joining an aluminum material according to any one of (1) to (6), wherein the aluminum wrought material has a flat plate shape.
According to this method of joining the aluminum material, the flat plate-shaped aluminum wrought material can be joined to the aluminum casting with high strength.

（８） 前記アルミニウム展伸材は、管形状である（１）〜（６）のいずれか１つに記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、管状のアルミニウム展伸材を高強度にアルミニウム鋳物と接合できる。 (8) The method for joining an aluminum material according to any one of (1) to (6), wherein the aluminum wrought material has a tube shape.
According to this method of joining the aluminum material, the tubular aluminum wrought material can be joined to the aluminum casting with high strength.

（９） 第１治具と、前記第１治具に対向して配置されて給湯口を有する第２治具と、の間に画成される内部空間に、第１アルミニウム展伸材を前記第１治具に沿わせて配置し、第２アルミニウム展伸材を前記第１アルミニウム展伸材から離間させて前記第２治具に沿わせて配置する工程と、
アルミニウム溶湯を、前記給湯口から前記内部空間に向けて加圧して注入し、前記第２アルミニウム展伸材に貫通孔を形成する工程と、
前記アルミニウム溶湯を、前記貫通孔を通じて前記内部空間に加圧して注入して、前記第１アルミニウム展伸材の表面に衝突させて、前記第１アルミニウム展伸材の前記アルミニウム溶湯との衝突位置を掘り下げる工程と、
前記アルミニウム溶湯を、前記第１アルミニウム展伸材の掘り下げによる除去分と共に、前記衝突位置の周囲の前記第１アルミニウム展伸材及び前記第２アルミニウム展伸材の表面に沿って前記内部空間に流動させる工程と、
をこの順で実施するアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、第２アルミニウム展伸材に形成する貫通孔を通じて、アルミニウム溶湯が第１アルミニウム展伸材との隙間に注入され、第１アルミニウム展伸材と第２アルミニウム展伸材とを、瞬時に高強度で接合できる。 (9) The first aluminum wrought material is placed in the internal space defined between the first jig and the second jig which is arranged so as to face the first jig and has a hot water supply port. A step of arranging the second aluminum wrought material along the first jig, separating the second aluminum wrought material from the first aluminum wrought material, and arranging the second aluminum wrought material along the second jig.
A step of forming a through hole in the second aluminum wrought material by pressurizing and injecting molten aluminum from the hot water supply port toward the internal space.
The molten aluminum is pressurized and injected into the internal space through the through hole to collide with the surface of the first aluminum wrought material, and the collision position of the first aluminum wrought material with the molten aluminum is determined. The process of digging down and
The molten aluminum flows into the internal space along the surfaces of the first aluminum wrought material and the second aluminum wrought material around the collision position together with the amount removed by digging the first aluminum wrought material. And the process of making
A method of joining aluminum materials in this order.
According to this method of joining the aluminum material, the molten aluminum is injected into the gap between the first aluminum wrought material and the second aluminum wrought material through the through hole formed in the second aluminum wrought material. It can be instantly joined to the drawn material with high strength.

（１０） 前記第１治具は、前記第２治具に形成された前記給湯口に対向する位置に、前記給湯口の開口面積より広い開口面積を有する凹部を有し、
前記第１アルミニウム展伸材が貫通して形成される湯道を通じて、前記凹部に前記アルミニウム溶湯を充填する（９）に記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、アルミニウム溶湯が充填された凹部には、アルミニウム溶湯の凝固後に、アルミニウム展伸材を厚さ方向に挟む係止部が形成される。この係止部がアルミニウム展伸材を挟み込むことで、アルミニウム展伸材とアルミニウム鋳物との接合強度を向上できる。 (10) The first jig has a recess formed in the second jig at a position facing the hot water supply port and having an opening area wider than the opening area of the hot water supply port.
The method for joining an aluminum material according to (9), wherein the recess is filled with the molten aluminum through a runner formed through the first aluminum wrought material.
According to this method of joining the aluminum material, a locking portion for sandwiching the aluminum wrought material in the thickness direction is formed in the recess filled with the molten aluminum after the molten aluminum is solidified. By sandwiching the aluminum wrought material between the locking portions, the joint strength between the aluminum wrought material and the aluminum casting can be improved.

（１１） 前記第２治具の複数箇所に前記給湯口が設けられ、
前記第１治具の前記給湯口に対向する位置それぞれに前記凹部が設けられ、
それぞれの前記凹部に前記アルミニウム溶湯を充填する（１０）に記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、アルミニウム鋳物が第１アルミニウム展伸材を貫通して凹部にまで至る箇所を複数形成することで、第１アルミニウム展伸材とアルミニウム鋳物との接合強度を更に向上できる。また、給湯口と凹部との配置密度を局所的に高めることで、接合強度をより向上できる。これによれば、特に強度が必要な箇所の接合強度を、周囲よりも簡単に高められる。 (11) The hot water supply port is provided at a plurality of locations of the second jig.
The recess is provided at each position of the first jig facing the hot water supply port.
The method for joining an aluminum material according to (10), wherein each of the recesses is filled with the molten aluminum.
According to this method of joining the aluminum material, the joining strength between the first aluminum wrought material and the aluminum casting is further increased by forming a plurality of places where the aluminum casting penetrates the first aluminum wrought material and reaches the recesses. Can be improved. Further, the joint strength can be further improved by locally increasing the arrangement density between the hot water supply port and the recess. According to this, the joint strength of the portion where the strength is particularly required can be easily increased as compared with the surroundings.

（１２） 前記第１アルミニウム展伸材と前記第２アルミニウム展伸材は、それぞれ平板形状である（９）〜（１１）のいずれか１つに記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、平板状のアルミニウム展伸材を高強度にアルミニウム鋳物と接合できる。 (12) The method for joining an aluminum material according to any one of (9) to (11), wherein the first aluminum wrought material and the second aluminum wrought material each have a flat plate shape.
According to this method of joining the aluminum material, the flat plate-shaped aluminum wrought material can be joined to the aluminum casting with high strength.

（１３） 前記第１アルミニウム展伸材と前記第２アルミニウム展伸材は、互いに径寸法の異なる管形状である（９）〜（１１）のいずれか１つに記載のアルミニウム材の接合方法。
このアルミニウム材の接合方法によれば、管状のアルミニウム展伸材を高強度にアルミニウム鋳物と接合できる。 (13) The method for joining aluminum materials according to any one of (9) to (11), wherein the first aluminum wrought material and the second aluminum wrought material have tube shapes having different diameters from each other.
According to this method of joining the aluminum material, the tubular aluminum wrought material can be joined to the aluminum casting with high strength.

１１，１１Ａ，１１Ｂ 第１治具
１３，１３Ａ 第２治具
１５，６５ 第１アルミニウム展伸材
１５ａ 外側面
１５ｂ 内側面（表面）
１７ アルミニウム溶湯
１９ 隙間
２１ 給湯口
３１ アルミニウム展伸材の減肉部
３３ アルミニウム鋳物
３５ 突起部
５１ 凹部
５３ 係止部
６３ｂ 内側面
６３ｃ 貫通孔
６３ｄ 下孔
６３，６３Ａ，６７ 第２アルミニウム展伸材
６５ｂ 外周面（表面）
６７ｂ 貫通孔
７１ 中子（第１治具）
７９ 筒状割り型（第２治具）
１００ 治具 11,11A, 11B 1st jig 13,13A 2nd jig 15,65 1st aluminum wrought material 15a Outer side surface 15b Inner side surface (surface)
17 Laminated aluminum 19 Gap 21 Hot water supply port 31 Thinned part of aluminum wrought material 33 Aluminum casting 35 Protruding part 51 Recessed part 53 Locking part 63b Inner surface 63c Through hole 63d Pilot hole 63, 63A, 67 Second aluminum wrought material 65b Outer surface (surface)
67b Through hole 71 Core (1st jig)
79 Cylindrical split type (second jig)
100 jig

Claims (13)

第１治具と、前記第１治具に対向して配置されて給湯口を有する第２治具と、の間に画成される内部空間に、第１アルミニウム展伸材を前記第１治具に沿わせて配置する工程と、
アルミニウム溶湯を、前記給湯口から前記第１アルミニウム展伸材に向けて加圧して注入し、前記第１アルミニウム展伸材の表面に衝突させて、前記第１アルミニウム展伸材の前記アルミニウム溶湯との衝突位置を掘り下げる工程と、
前記アルミニウム溶湯を、前記第１アルミニウム展伸材の掘り下げによる除去分と共に、前記衝突位置の周囲の前記第１アルミニウム展伸材の表面に沿って前記内部空間に流動させる工程と、
をこの順で実施するアルミニウム材の接合方法。 The first aluminum wrought material is placed in the internal space defined between the first jig and the second jig having a hot water supply port arranged opposite to the first jig. The process of arranging along the jig and
The molten aluminum is pressurized and injected from the hot water supply port toward the first aluminum wrought material, collides with the surface of the first aluminum wrought material, and is combined with the molten aluminum of the first aluminum wrought material. The process of digging into the collision position of
A step of flowing the molten aluminum into the internal space along the surface of the first aluminum wrought material around the collision position together with a portion removed by digging the first aluminum wrought material.
A method of joining aluminum materials in this order. 前記第１アルミニウム展伸材の前記衝突位置を貫通しない深さまで掘り下げる請求項１に記載のアルミニウム材の接合方法。 The method for joining an aluminum material according to claim 1, wherein the first aluminum wrought material is dug down to a depth that does not penetrate the collision position. 前記第１アルミニウム展伸材の前記衝突位置を、前記アルミニウム溶湯の衝突により貫通させる請求項１に記載のアルミニウム材の接合方法。 The method for joining an aluminum material according to claim 1, wherein the collision position of the first aluminum wrought material is penetrated by the collision of the molten aluminum. 前記第１治具は、前記第２治具に形成された前記給湯口に対向する位置に、前記給湯口の開口面積より広い開口面積を有する凹部を有し、
前記第１アルミニウム展伸材が貫通して形成される湯道を通じて、前記凹部に前記アルミニウム溶湯を充填する請求項３に記載のアルミニウム材の接合方法。 The first jig has a recess formed in the second jig at a position facing the hot water supply port and having an opening area wider than the opening area of the hot water supply port.
The method for joining an aluminum material according to claim 3, wherein the recess is filled with the molten aluminum through a runner formed through the first aluminum wrought material. 前記第２治具の複数箇所に前記給湯口が設けられ、
前記第１治具の前記給湯口に対向する位置それぞれに前記凹部が設けられ、
それぞれの前記凹部に前記アルミニウム溶湯を充填する請求項４に記載のアルミニウム材の接合方法。 The hot water supply port is provided at a plurality of places of the second jig.
The recess is provided at each position of the first jig facing the hot water supply port.
The method for joining an aluminum material according to claim 4, wherein each of the recesses is filled with the molten aluminum. 前記第１アルミニウム展伸材を配置する工程は、切り欠き又は貫通孔を有する第２アルミニウム展伸材を、前記切り欠き又は貫通孔によって前記給湯口が前記内部空間に露出される位置で、前記第１アルミニウム展伸材から離間させて前記第１治具に沿わせて設ける工程を更に有する請求項１〜５のいずれか１項に記載のアルミニウム材の接合方法。 The step of arranging the first aluminum wrought material is a step of arranging the second aluminum wrought material having a notch or a through hole at a position where the hot water supply port is exposed to the internal space by the notch or the through hole. The method for joining an aluminum material according to any one of claims 1 to 5, further comprising a step of providing the aluminum wrought material away from the first aluminum wrought material along the first jig. 前記第１アルミニウム展伸材は、平板形状である請求項１〜６のいずれか１項に記載のアルミニウム材の接合方法。 The method for joining an aluminum material according to any one of claims 1 to 6, wherein the first aluminum wrought material has a flat plate shape. 前記第１アルミニウム展伸材は、管形状である請求項１〜６のいずれか１項に記載のアルミニウム材の接合方法。 The method for joining an aluminum material according to any one of claims 1 to 6, wherein the first aluminum wrought material has a tube shape. 第１治具と、前記第１治具に対向して配置されて給湯口を有する第２治具と、の間に画成される内部空間に、第１アルミニウム展伸材を前記第１治具に沿わせて配置し、第２アルミニウム展伸材を前記第１アルミニウム展伸材から離間させて前記第２治具に沿わせて配置する工程と、
アルミニウム溶湯を、前記給湯口から前記内部空間に向けて加圧して注入し、前記第２アルミニウム展伸材に貫通孔を形成する工程と、
前記アルミニウム溶湯を、前記貫通孔を通じて前記内部空間に加圧して注入して、前記第１アルミニウム展伸材の表面に衝突させて、前記第１アルミニウム展伸材の前記アルミニウム溶湯との衝突位置を掘り下げる工程と、
前記アルミニウム溶湯を、前記第１アルミニウム展伸材の掘り下げによる除去分と共に、前記衝突位置の周囲の前記第１アルミニウム展伸材及び前記第２アルミニウム展伸材の表面に沿って前記内部空間に流動させる工程と、
をこの順で実施するアルミニウム材の接合方法。 The first aluminum wrought material is placed in the internal space defined between the first jig and the second jig having a hot water supply port arranged opposite to the first jig. A step of arranging the second aluminum wrought material along the tool, separating the second aluminum wrought material from the first aluminum wrought material, and arranging the second aluminum wrought material along the second jig.
A step of forming a through hole in the second aluminum wrought material by pressurizing and injecting molten aluminum from the hot water supply port toward the internal space.
The molten aluminum is pressurized and injected into the internal space through the through hole to collide with the surface of the first aluminum wrought material, and the collision position of the first aluminum wrought material with the molten aluminum is determined. The process of digging down and
The molten aluminum flows into the internal space along the surfaces of the first aluminum wrought material and the second aluminum wrought material around the collision position together with the amount removed by digging the first aluminum wrought material. And the process of making
A method of joining aluminum materials in this order. 前記第１治具は、前記第２治具に形成された前記給湯口に対向する位置に、前記給湯口の開口面積より広い開口面積を有する凹部を有し、
前記第１アルミニウム展伸材が貫通して形成される湯道を通じて、前記凹部に前記アルミニウム溶湯を充填する請求項９に記載のアルミニウム材の接合方法。 The first jig has a recess formed in the second jig at a position facing the hot water supply port and having an opening area wider than the opening area of the hot water supply port.
The method for joining an aluminum material according to claim 9, wherein the recess is filled with the molten aluminum through a runner formed through the first aluminum wrought material. 前記第２治具の複数箇所に前記給湯口が設けられ、
前記第１治具の前記給湯口に対向する位置それぞれに前記凹部が設けられ、
それぞれの前記凹部に前記アルミニウム溶湯を充填する請求項１０に記載のアルミニウム材の接合方法。 The hot water supply port is provided at a plurality of places of the second jig.
The recess is provided at each position of the first jig facing the hot water supply port.
The method for joining an aluminum material according to claim 10, wherein each of the recesses is filled with the molten aluminum. 前記第１アルミニウム展伸材と前記第２アルミニウム展伸材は、それぞれ平板形状である請求項９〜１１のいずれか１項に記載のアルミニウム材の接合方法。 The method for joining an aluminum material according to any one of claims 9 to 11, wherein the first aluminum wrought material and the second aluminum wrought material each have a flat plate shape. 前記第１アルミニウム展伸材と前記第２アルミニウム展伸材は、互いに径寸法の異なる管形状である請求項９〜１１のいずれか１項に記載のアルミニウム材の接合方法。 The method for joining an aluminum material according to any one of claims 9 to 11, wherein the first aluminum wrought material and the second aluminum wrought material have tube shapes having different diameters from each other.
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DE102010015426A1 (en) * 2010-04-19 2011-10-20 Audi Ag Producing composite component e.g. outer skin part of a motor vehicle body, by reinforcing by forming profiled molding and structural part produced by casting, where deformation of molded part is partially carried out into casting die
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Publication number Priority date Publication date Assignee Title
JP2004243364A (en) * 2003-02-13 2004-09-02 Aisin Takaoka Ltd Method and apparatus for producing die cast product
WO2007051652A1 (en) * 2005-11-07 2007-05-10 Friedrich-Alexander-Universität Erlangen-Nürnberg Shaped two-dimensional semifinished part, structured or hybrid component and method for producing such a semifinished part or component
DE102010015426A1 (en) * 2010-04-19 2011-10-20 Audi Ag Producing composite component e.g. outer skin part of a motor vehicle body, by reinforcing by forming profiled molding and structural part produced by casting, where deformation of molded part is partially carried out into casting die
DE102014014969A1 (en) * 2013-10-14 2015-04-16 Imperia Gesellschaft für angewandte Fahrzeugentwicklung mbH Hybrid component casting tool and method of making a hybrid component

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