JP2019136739A - Dissimilar metal conjugate - Google Patents

Dissimilar metal conjugate Download PDF

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JP2019136739A
JP2019136739A JP2018021927A JP2018021927A JP2019136739A JP 2019136739 A JP2019136739 A JP 2019136739A JP 2018021927 A JP2018021927 A JP 2018021927A JP 2018021927 A JP2018021927 A JP 2018021927A JP 2019136739 A JP2019136739 A JP 2019136739A
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metal material
aluminum
iron
based metal
joining
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宏 安江
Hiroshi Yasue
宏 安江
加津昭 片桐
Kazuaki Katagiri
加津昭 片桐
泰正 深谷
Yasumasa Fukaya
泰正 深谷
己烈 尹
Kyyoul Yun
己烈 尹
廣茂 小河
Hiroshige Ogawa
廣茂 小河
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TOKAI GIKEN KOGYO KK
Gifu University NUC
Gifu Prefecture
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TOKAI GIKEN KOGYO KK
Gifu University NUC
Gifu Prefecture
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Priority to JP2018021927A priority Critical patent/JP2019136739A/en
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Abstract

To provide a junction technique for dissimilar metals which dispenses with the beveling of a metal material or a filler material.SOLUTION: A dissimilar metal junction method enables the junction of a ferrous metal material 10 with an aluminum-based metal material 20 by melting an end face 12 of a ferrous metal material 10 on heating a vicinity of an end face of the ferrous metal material 10 with a laser welder 40 with the end face 12 of the ferrous metal material 10 butted with the end face 22 of an aluminum-based metal material 20, and by melting an end face of the aluminum-based metal material 20 on heat conducted from the ferrous metal material 10 to the aluminum-based material 20 to form a weld zone 30 at a butt part of the ferrous metal material 10 with the aluminum-based metal material 20.SELECTED DRAWING: Figure 1

Description

本発明は、鉄系金属とアルミニウム系金属などの異種金属材料を突合せ溶接にて接合した異種金属接合体及び異種金属接合方法に関する。   The present invention relates to a dissimilar metal joined body and a dissimilar metal joining method in which dissimilar metal materials such as an iron metal and an aluminum metal are joined by butt welding.

従来、鉄系金属材料とアルミニウム系金属材料などの異種金属材料の突合せ溶接を行う場合、突合せ部を開先加工し、開先加工した部分に、ニッケル基合金などの溶加材を挿入して加熱し、異種金属同士を接合させる接合方法があった（例えば、引用文献１参照）   Conventionally, when performing butt welding of dissimilar metal materials such as iron-based metal materials and aluminum-based metal materials, the butt portion is grooved, and a filler metal such as a nickel-based alloy is inserted into the groove-machined portion. There was a joining method in which different metals were joined by heating (see, for example, cited document 1)

特開２０１７−０８０７９１号公報JP 2017-080791 A

ところが、上記従来の異種金属の接合方法では、接合前に金属材料の先端に開先加工をする必要があり、また、接合する金属材料の他に溶加材が必要となるなど、接合工程が煩雑であるという問題があった。   However, the conventional dissimilar metal joining method requires a beveling process at the tip of the metal material before joining, and requires a joining material such as a filler material in addition to the metal material to be joined. There was a problem of being complicated.

本発明は、こうした問題に鑑みなされたもので、金属材料の開先加工や溶加材を必要としない異種金属の接合技術を提供することを目的とする。   This invention is made | formed in view of such a problem, and it aims at providing the joining technique of the dissimilar metal which does not require the groove processing of a metal material, or a filler metal.

本発明は、上述の課題の少なくとも一部を解決するためになされたものであり、以下の適用例として実現することが可能である。なお、本欄における括弧内の参照符号や補足説明等は、本発明の理解を助けるために、後述する実施形態との対応関係を示したものであって、本発明を何ら限定するものではない。   SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following application examples. Note that the reference numerals in parentheses and supplementary explanations in this column show the correspondence with the embodiments described later in order to help understanding of the present invention, and do not limit the present invention at all. .

［適用例１］
本発明に係る異種金属接合体（１）は、
鉄系金属材料（１０）と、アルミニウム系金属材料（２０）と、前記鉄系金属材料（１０）の端面（１２）と前記アルミニウム系金属材料（２０）の端面（２２）とを突き合せた状態で、前記鉄系金属材料（１０）の端面（１２）近傍を加熱手段（４０）により加熱することにより前記鉄系金属材料（１０）と前記アルミニウム系金属材料（２０）の突合せ部分に形成された溶融部（３０）と、を備えていることを要旨とする。 [Application Example 1]
The dissimilar metal joined body (1) according to the present invention is:
The iron-based metal material (10), the aluminum-based metal material (20), the end surface (12) of the iron-based metal material (10), and the end surface (22) of the aluminum-based metal material (20) were butted together. In the state, the vicinity of the end face (12) of the iron-based metal material (10) is heated by the heating means (40) to form a butt portion of the iron-based metal material (10) and the aluminum-based metal material (20). And the melted part (30).

このような異種金属接合体（１）では、鉄系金属材料（１０）の端面（１２）とアルミニウム系金属材料（２０）の端面（２２）とを突き合せた状態で、加熱手段（４０）により鉄系金属材料（１０）の端面（１２）近傍を加熱すると鉄系金属材料（１０）からアルミニウム系金属材料（２０）へ熱が伝導する。   In such a dissimilar metal joined body (1), the heating means (40) in a state where the end face (12) of the iron-based metal material (10) and the end face (22) of the aluminum-based metal material (20) face each other. When the vicinity of the end face (12) of the iron-based metal material (10) is heated by heat, heat is conducted from the iron-based metal material (10) to the aluminum-based metal material (20).

すると、伝導した熱により鉄系金属材料（１０）の端面（１２）とアルミニウム系金属材料（２０）の端面（２２）とが溶融し溶融部（３０）が形成される。このようにして溶融部（３０）が形成されることにより、鉄系金属材料（１０）とアルミニウム系金属材料（２０）とが接合され、異種金属接合体（１）が形成される。   Then, the end surface (12) of the iron-based metal material (10) and the end surface (22) of the aluminum-based metal material (20) are melted by the conducted heat to form a melted part (30). Thus, by forming a fusion | melting part (30), an iron-type metal material (10) and an aluminum-type metal material (20) are joined, and a dissimilar metal joined body (1) is formed.

つまり、鉄系金属材料（１０）及びアルミニウム系金属材料（２０）に開先加工や溶加材を必要とせずに異種金属接合体（１）を形成することが可能となる。   That is, it is possible to form the dissimilar metal joined body (1) without requiring groove processing or a filler material in the iron-based metal material (10) and the aluminum-based metal material (20).

［適用例２］
また、本発明の異種金属接合方法は、鉄系金属材料（１０）の端面（１２）とアルミニウム系金属材料（２０）の端面（２２）とを突き合せ、前記鉄系金属材料（１０）の端面（１２）近傍を加熱手段（４０）により加熱することにより前記鉄系金属材料（１０）と前記アルミニウム系金属材料（２０）の突合せ部分に溶融部（３０）を形成することにより前記鉄系金属材料（１０）と前記アルミニウム系金属材料（２０）とを接合することを要旨とする。 [Application Example 2]
Moreover, the dissimilar metal joining method of this invention butt | matches the end surface (12) of an iron-type metal material (10), and the end surface (22) of an aluminum-type metal material (20), and the said iron-type metal material (10) By heating the vicinity of the end face (12) with a heating means (40), a molten part (30) is formed at the butt portion of the iron-based metal material (10) and the aluminum-based metal material (20), thereby the iron-based material. The gist is to join the metal material (10) and the aluminum-based metal material (20).

このような異種金属接合方法によれば、適用例１に記載の異種金属接合体（１）での説明と同様の効果を得ることができる。   According to such a dissimilar metal joining method, the same effect as the explanation in the dissimilar metal joined body (1) described in Application Example 1 can be obtained.

鉄系金属材料とアルミニウム系金属材料の接合時の様子を示す概念図である。It is a conceptual diagram which shows the mode at the time of joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース１）を示す図である。It is a figure which shows the test result (case 1) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース２）を示す図である。It is a figure which shows the test result (case 2) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース３）を示す図である。It is a figure which shows the test result (case 3) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース４）を示す図である。It is a figure which shows the test result (case 4) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース５）を示す図である。It is a figure which shows the test result (case 5) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース６）を示す図である。It is a figure which shows the test result (case 6) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース７）を示す図である。It is a figure which shows the test result (case 7) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース８）を示す図である。It is a figure which shows the test result (case 8) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース９）を示す図である。It is a figure which shows the test result (case 9) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース１０）を示す図である。It is a figure which shows the test result (case 10) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース１１）を示す図である。It is a figure which shows the test result (case 11) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合後の試験結果（ケース１２）を示す図である。It is a figure which shows the test result (case 12) after joining of an iron-type metal material and an aluminum-type metal material. 鉄系金属材料とアルミニウム系金属材料の接合結果を示す写真である。It is a photograph which shows the joining result of an iron-type metal material and an aluminum-type metal material. 異種金属接合体の試験片の接合断面の拡大写真である。It is an enlarged photograph of the joint section of the test piece of a dissimilar metal joined body. 異種金属接合体の引張強さの結果を示す図である。It is a figure which shows the result of the tensile strength of a dissimilar metal joined body. 異種金属接合体の引張試験における試験片の荷重と変位の関係を示す図である。It is a figure which shows the relationship between the load and displacement of a test piece in the tension test of a dissimilar metal joined body.

以下、本発明が適用された実施形態について図面を用いて説明する。なお、本発明の実施の形態は、下記の実施形態に何ら限定されることはなく、本発明の技術的範囲に属する限り種々の形態を採りうる。   Embodiments to which the present invention is applied will be described below with reference to the drawings. The embodiment of the present invention is not limited to the following embodiment, and can take various forms as long as they belong to the technical scope of the present invention.

図１は、本発明が適用された異種金属接合方法により鉄系金属材料１０とアルミニウム系金属材料２０の接合時の様子を示す概念図である。   FIG. 1 is a conceptual diagram showing a state at the time of joining an iron-based metal material 10 and an aluminum-based metal material 20 by a dissimilar metal joining method to which the present invention is applied.

図１に示すように、加熱手段４０として、固体レーザ発振器を用いたレーザ溶接機４０を用いる。レーザ溶接機４０は、レーザ発振器４２から発振されるレーザ光を集光レンズ４４で集光し、接合箇所に照射する。   As shown in FIG. 1, a laser welding machine 40 using a solid laser oscillator is used as the heating means 40. The laser welding machine 40 condenses the laser light oscillated from the laser oscillator 42 with the condensing lens 44 and irradiates the joint portion.

本実施形態では、レーザ溶接機４０のレーザ発振器４２として、固体レーザを用いているが、ＹＡＧレーザ、炭酸ガスレーザ、半導体レーザ、気体レーザあるいは液体レーザなどを用いてもよい。   In the present embodiment, a solid-state laser is used as the laser oscillator 42 of the laser welding machine 40, but a YAG laser, a carbon dioxide gas laser, a semiconductor laser, a gas laser, a liquid laser, or the like may be used.

接合する材料としては、鉄系金属材料１０とアルミニウム系金属材料２０を用い、図１に示すように、板状に形成した鉄系金属材料１０の一端面と板状に形成したアルミニウム系金属材料の一端面とを突合せる。そして、鉄系金属材料１０とアルミニウム系金属材料２０の突合せ部分の近傍の鉄系金属材料１０側に、レーザ溶接機４０からレーザ光を照射する。   As materials to be joined, an iron-based metal material 10 and an aluminum-based metal material 20 are used, and as shown in FIG. 1, one end face of the iron-based metal material 10 formed in a plate shape and an aluminum-based metal material formed in a plate shape. Butt one end face. Then, the laser beam is irradiated from the laser welding machine 40 to the iron metal material 10 side in the vicinity of the butted portion of the iron metal material 10 and the aluminum metal material 20.

ここで、「突合せ部分の近傍の鉄系金属材料１０側」とは、鉄製金属材料１０とアルミニウム系金属材料２０とを突合せてレーザ溶接機４０で加熱した場合に、鉄系金属製材料１０の端面が溶融し、かつ、鉄系金属材料１０からアルミニウム系金属材料２０に伝わる熱によりアルミニウム系金属材料２０が溶融するために必要となる、鉄系金属材料１０の端面からの位置を意味している。   Here, “the iron-based metal material 10 side near the butted portion” means that the iron-based metal material 10 and the aluminum-based metal material 20 are butted together and heated by the laser welding machine 40. It means a position from the end surface of the iron-based metal material 10 that is necessary for the end surface to melt and the aluminum-based metal material 20 to be melted by the heat transmitted from the iron-based metal material 10 to the aluminum-based metal material 20. Yes.

なお、本実施形態では、鉄系金属材料１０として、ＳＰＨＣ：熱間圧延鋼板、ＳＰＣＣ：冷間圧延鋼板、ＳＰＦＨ：自動車用熱間圧延高張力鋼板、ＳＰＦＣ：自動車用加工性冷間圧延高張力鋼を用い、アルミニウム系金属材料２０として、Ａ５０５２：アルミニウム合金（Ａｌ−Ｍｇ系合金）、Ａ１０５０：純アルミニウム、Ａ６０６１：アルミニウム合金(Ａｌ−Ｍｇ−Ｓｉ系合金）を用いている。   In this embodiment, the ferrous metal material 10 includes SPHC: hot rolled steel plate, SPCC: cold rolled steel plate, SPFH: hot rolled high strength steel plate for automobiles, and SPFC: workable cold rolled high tension for automobiles. Steel is used, and A5052: aluminum alloy (Al—Mg alloy), A1050: pure aluminum, and A6061: aluminum alloy (Al—Mg—Si alloy) are used as the aluminum metal material 20.

このように鉄系金属材料１０とアルミニウム系金属材料２０との突合せ部分の近傍の鉄系金属材料１０側にレーザ光を照射すると、鉄系金属材料１０が加熱され、加熱された際の熱が鉄系金属材料１０側からアルミニウム系金属材料２０側に伝わる。   As described above, when the iron-based metal material 10 side near the butt portion between the iron-based metal material 10 and the aluminum-based metal material 20 is irradiated with laser light, the iron-based metal material 10 is heated, and the heat at the time of heating is increased. It is transmitted from the iron-based metal material 10 side to the aluminum-based metal material 20 side.

そして、突合せ部分で鉄系金属材料１０とアルミニウム系金属材料２０が溶融し、鉄系金属とアルミニウム系金属によって溶融部３０が形成され、鉄系金属材料１０とアルミニウム系金属材料２０とが接合されて異種金属接合体１が形成される。   Then, the iron-based metal material 10 and the aluminum-based metal material 20 are melted at the abutting portion, and a melting part 30 is formed by the iron-based metal and the aluminum-based metal, and the iron-based metal material 10 and the aluminum-based metal material 20 are joined. Thus, the dissimilar metal joined body 1 is formed.

実際に、鉄系金属材料１０とアルミニウム系金属材料２０の接合を行う場合の条件（パラメータ）として、レーザ出力：Ｘ［Ｗ］、レーザ光の移動速度：Ｙ［ｍ／ｓ］、Ｖ、レーザ光の照射周波数（単位時間当たりの照射パルス数）：Ｚ［Ｈｚ］、レーザ照射口と鉄系金属材料１０の表面との間の距離：ｄ［ｍｍ］、窒素ガスなどの不活性ガスのガス流量：Ｑ［ｌ／ｍｉｎ］となる。   Actually, as conditions (parameters) for joining the iron-based metal material 10 and the aluminum-based metal material 20, laser output: X [W], laser beam moving speed: Y [m / s], V, laser Light irradiation frequency (number of irradiation pulses per unit time): Z [Hz], distance between laser irradiation port and surface of iron-based metal material 10: d [mm], gas of inert gas such as nitrogen gas Flow rate: Q [l / min].

（実際の接合例）
図２〜図１３に、実際接合を行った際の試験条件と試験結果を示す。図２〜図１３は、鉄系金属材料１０とアルミニウム系金属材料２０の接合後の試験結果（ケース１~ケース１２）を示す図である。各試験ケースにおいて使用した鉄系金属材料１０とアルミニウム系金属材料２０を以下の（１）〜（１２）に示す。 (Actual joining example)
2 to 13 show test conditions and test results when actual joining is performed. 2 to 13 are diagrams showing test results (case 1 to case 12) after joining the iron-based metal material 10 and the aluminum-based metal material 20. FIG. The iron-based metal material 10 and the aluminum-based metal material 20 used in each test case are shown in the following (1) to (12).

（１）ケース１(図２参照）
・鉄系金属材料１０：ＳＰＨＣ、板厚ｔｉ：１．５［ｍｍ］
・アルミニウム系金属材料２０：Ａ５０５２、板厚ｔａ：１．５［ｍｍ］ (1) Case 1 (see Fig. 2)
Iron-based metal material 10: SPHC, plate thickness t i : 1.5 [mm]
Aluminum-based metallic material 20: A5052, thickness t a: 1.5 [mm]

（２）ケース２(図３参照）
・鉄系金属材料１０：ＳＰＨＣ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ５０５２、板厚ｔａ：１．５［ｍｍ］ (2) Case 2 (see Fig. 3)
Iron-based metal material 10: SPHC, plate thickness t i : 0.8 [mm]
Aluminum-based metallic material 20: A5052, thickness t a: 1.5 [mm]

（３）ケース３(図４参照）
・鉄系金属材料１０：ＳＰＨＣ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ１０５０、板厚ｔａ：１．５［ｍｍ］ (3) Case 3 (see Fig. 4)
Iron-based metal material 10: SPHC, plate thickness t i : 0.8 [mm]
Aluminum-based metallic material 20: A1050, thickness t a: 1.5 [mm]

（４）ケース４(図５参照）
・鉄系金属材料１０：ＳＰＨＣ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ５０５２、板厚ｔａ：１．５［ｍｍ］ (4) Case 4 (see Fig. 5)
Iron-based metal material 10: SPHC, plate thickness t i : 0.8 [mm]
Aluminum-based metallic material 20: A5052, thickness t a: 1.5 [mm]

（５）ケース５(図６参照）
・鉄系金属材料１０：ＳＰＨＣ、板厚ｔｉ：１．５［ｍｍ］
・アルミニウム系金属材料２０：Ａ１０５０、板厚ｔａ：０．８［ｍｍ］ (5) Case 5 (see Fig. 6)
Iron-based metal material 10: SPHC, plate thickness t i : 1.5 [mm]
Aluminum-based metal material 20: A1050, plate thickness t a : 0.8 [mm]

（６）ケース６(図７参照）
・鉄系金属材料１０：ＳＰＨＣ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ１０５０、板厚ｔａ：０．８［ｍｍ］ (6) Case 6 (see Fig. 7)
Iron-based metal material 10: SPHC, plate thickness t i : 0.8 [mm]
Aluminum-based metal material 20: A1050, plate thickness t a : 0.8 [mm]

（７）ケース７(図８参照）
・鉄系金属材料１０：ＳＰＣＣ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ６０６１、板厚ｔａ：１．６［ｍｍ］ (7) Case 7 (see Fig. 8)
-Iron-based metal material 10: SPCC, plate thickness t i : 0.8 [mm]
Aluminum-based metallic material 20: A6061, thickness t a: 1.6 [mm]

（８）ケース８(図９参照）
・鉄系金属材料１０：ＳＰＣＣ、板厚ｔｉ：０．４［ｍｍ］
・アルミニウム系金属材料２０：Ａ１０５０、板厚ｔａ：０．４［ｍｍ］ (8) Case 8 (see Fig. 9)
-Iron-based metal material 10: SPCC, plate thickness t i : 0.4 [mm]
Aluminum-based metallic material 20: A1050, thickness t a: 0.4 [mm]

（９）ケース９(図１０参照）
・鉄系金属材料１０：ＳＰＦＨ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ１０５０、板厚ｔａ：０．４［ｍｍ］ (9) Case 9 (see Fig. 10)
-Iron-based metal material 10: SPFH, plate thickness t i : 0.8 [mm]
Aluminum-based metallic material 20: A1050, thickness t a: 0.4 [mm]

（１０）ケース１０(図１１参照）
・鉄系金属材料１０：ＳＰＦＨ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ５０５２、板厚ｔａ：１．５［ｍｍ］ (10) Case 10 (see FIG. 11)
-Iron-based metal material 10: SPFH, plate thickness t i : 0.8 [mm]
Aluminum-based metallic material 20: A5052, thickness t a: 1.5 [mm]

（１１）ケース１１(図１２参照）
・鉄系金属材料１０：ＳＰＦＣ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ６０６１、板厚ｔａ：１．６［ｍｍ］ (11) Case 11 (see FIG. 12)
Iron-based metal material 10: SPFC, plate thickness t i : 0.8 [mm]
Aluminum-based metallic material 20: A6061, thickness t a: 1.6 [mm]

（１２）ケース１２(図１３参照）
・鉄系金属材料１０：ＳＰＦＣ、板厚ｔｉ：０．８［ｍｍ］
・アルミニウム系金属材料２０：Ａ６０６１、板厚ｔａ：４．０［ｍｍ］ (12) Case 12 (see FIG. 13)
Iron-based metal material 10: SPFC, plate thickness t i : 0.8 [mm]
Aluminum-based metal material 20: A6061, plate thickness t a : 4.0 [mm]

図２〜図１３に示すように、いずれの試験ケースにおいても、レーザ溶接機４０のレーザ照射口と鉄系金属材料１０の表面との間の距離ｄが一定以下であれば良好な溶着状態を得ることができていることが分かる。   As shown in FIGS. 2 to 13, in any test case, if the distance d between the laser irradiation port of the laser welding machine 40 and the surface of the iron-based metal material 10 is not more than a certain value, a good welding state is obtained. You can see that you can get it.

また、図１４に、鉄系金属材料とアルミニウム系金属材料の接合結果を写真で示す。図１４（ａ）〜図１４（ｄ）のいずれの場合も鉄系金属材料１０とアルミニウム系金属材料２０との突合せ部分に溶融部３０が形成され、鉄系金属材料１０とアルミニウム系金属材料２０が接合されていることが目視にて確認できる。   FIG. 14 is a photograph showing the joining result of the iron-based metal material and the aluminum-based metal material. 14A to 14D, a melting portion 30 is formed at the abutting portion between the iron-based metal material 10 and the aluminum-based metal material 20, and the iron-based metal material 10 and the aluminum-based metal material 20 are formed. Can be visually confirmed.

また、図１５にＡ１０５０（純アルミニウム：図１５中に「Ａ］で示す））とＳＰＣＣ（冷間圧延鋼板：図１５中に「Ｂ」で示す）とを接合して形成した異種金属接合体１の２つの試験片の接合断面の拡大写真（拡大率１０倍）を示す。
図１５（ａ）及び図１５（ｂ）に示すように、いずれの試験片においても、異種金属が良好な溶け込み状態を示しており、溶接が良好に行われていることが分かる。 Further, a dissimilar metal joined body formed by joining A1050 (pure aluminum: indicated by “A” in FIG. 15) and SPCC (cold rolled steel sheet: indicated by “B” in FIG. 15) in FIG. 15. 1 shows an enlarged photograph (a magnification of 10 times) of a joining cross section of two test pieces.
As shown in FIGS. 15 (a) and 15 (b), in any of the test pieces, the dissimilar metal shows a good penetration state, and it can be seen that welding is performed well.

次に、図１６及び図１７に基づき、異種金属接合体１の引張試験結果について説明する。図１６は、引張強さの結果を示す図であり、図１７は、引張試験における試験片の荷重と変位の関係を示す図である。   Next, based on FIG.16 and FIG.17, the tension test result of the dissimilar metal joined body 1 is demonstrated. FIG. 16 is a diagram showing the results of tensile strength, and FIG. 17 is a diagram showing the relationship between the load and displacement of a test piece in a tensile test.

引張試験においては、異種金属接合体１として、Ａ１０５０（純アルミニウム）とＳＰＣＣ（冷間圧延鋼板）とを接合して形成した異種金属接合体１を用い、引張試験は、ＪＩＳ Ｚ ３１２１（突合せ溶接継手の引張試験方法）により行った。   In the tensile test, the dissimilar metal joined body 1 formed by joining A1050 (pure aluminum) and SPCC (cold rolled steel plate) was used as the dissimilar metal joined body 1, and the tensile test was conducted according to JIS Z 3121 (butt welding). The joint tensile test method).

図１６及び図１７に示すように、板厚：１．５［ｍｍ］、幅：１２．５［ｍｍ］、断面積：１８．７５［ｍｍ２］の試験片５つ（試験片Ｎｏ．１〜Ｎｏ．５）に対し、引張試験を行い、最大試験力：１．０９０〜１．３０１［ｋＮ］、引っ張り強さ５８．１〜６９．４［Ｎ／ｍｍ２］が得られており、十分な強度を有するものとなっている。 As shown in FIGS. 16 and 17, five test pieces (test piece No. 1) having a plate thickness: 1.5 [mm], a width: 12.5 [mm], and a cross-sectional area: 18.75 [mm 2 ]. To No. 5), a tensile test was performed, and a maximum test force: 1.090 to 1.301 [kN] and a tensile strength of 58.1 to 69.4 [N / mm 2 ] were obtained. It has sufficient strength.

また、図１７に示すように、いずれの試験片においても荷重１１４０［Ｎ］以上の破壊強度を有しているものとなっている。   Moreover, as shown in FIG. 17, any test piece has a breaking strength of 1140 [N] or more.

（異種金属接合方法の特徴）
以上のような異種金属接合方法によれば、レーザ溶接機４０などの加熱手段により鉄系金属材料１０を加熱すると、その熱が鉄系金属材料１０に突き合されているアルミニウム系金属材料２０に伝わり、鉄系金属材料１０の端面部分とアルミニウム系金属材料２０の端面部分とが溶融して溶融部３０が形成される。 (Features of different metal joining methods)
According to the dissimilar metal joining method as described above, when the iron-based metal material 10 is heated by heating means such as the laser welding machine 40, the heat is applied to the aluminum-based metal material 20 that is abutted against the iron-based metal material 10. The end surface portion of the iron-based metal material 10 and the end surface portion of the aluminum-based metal material 20 are melted to form the melted portion 30.

このようにして溶融部３０が形成されることにより鉄系金属材料１０とアルミニウム系金属材料２０とが接合され、異種金属接合体１を得ることができる。
このとき、鉄系金属材料１０及びアルミニウム系金属材料２０の突合せ部分に開先加工を施す必要がなく、また、溶加材なども必要としない。つまり、非常に簡易な方法で異種金属接合体を得ることができる。 By forming the melted portion 30 in this manner, the iron-based metal material 10 and the aluminum-based metal material 20 are bonded, and the dissimilar metal bonded body 1 can be obtained.
At this time, it is not necessary to perform groove processing on the butt portion of the iron-based metal material 10 and the aluminum-based metal material 20, and no filler material or the like is required. That is, a dissimilar metal joined body can be obtained by a very simple method.

［その他の実施形態］
以上、本発明の実施形態について説明したが、本発明は、本実施形態に限定されるものではなく、種々の態様を採ることができる。 [Other Embodiments]
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, A various aspect can be taken.

（１）上記実施形態では、加熱方法としてレーザ溶接を用いたが、鉄系金属材料１０の端部を加熱できればよいため、レーザ溶接の代わりに、アーク溶接、電子ビーム溶接、光ビーム溶接、テルミット溶接などの溶接方法を用いてもよい。 (1) In the above embodiment, laser welding is used as a heating method. However, since it is only necessary to heat the end of the iron-based metal material 10, arc welding, electron beam welding, light beam welding, thermit is used instead of laser welding. A welding method such as welding may be used.

（２）上記実施形態では、接合する鉄系金属材料１０及びアルミニウム系金属材料２０を板状に形成していたが、断面形状が円形や楕円形の棒材であってもよい。また、断面形状が円形、楕円形あるいは矩形の中空材であってもよい。 (2) In the above embodiment, the iron-based metal material 10 and the aluminum-based metal material 20 to be joined are formed in a plate shape, but a bar having a circular or elliptical cross section may be used. Further, a hollow material having a circular, elliptical or rectangular cross-sectional shape may be used.

１… 異種金属接合体 １０… 鉄系金属材料 １２… 端面 ２０… アルミニウム系金属材料 ２２… 端面 ３０… 溶融部 ４０… レーザ溶接機 ４２… レーザ発振器 ４４… 集光レンズ   DESCRIPTION OF SYMBOLS 1 ... Dissimilar metal joined body 10 ... Iron-type metal material 12 ... End surface 20 ... Aluminum type metal material 22 ... End surface 30 ... Melting part 40 ... Laser welding machine 42 ... Laser oscillator 44 ... Condensing lens

Claims (2)

鉄系金属材料と
アルミニウム系金属材料と、
前記鉄系金属材料の端面と前記アルミニウム系金属材料の端面とを突き合せた状態で、前記鉄系金属材料の端面近傍を加熱手段により加熱することにより前記鉄系金属材料と前記アルミニウム系金属材料の突合せ部分に形成された溶融部と、
を備えていることを特徴とする異種金属接合体。 An iron-based metal material and an aluminum-based metal material,
The iron-based metal material and the aluminum-based metal material are heated by heating the vicinity of the end surface of the iron-based metal material with a heating means in a state in which the end surface of the iron-based metal material and the end surface of the aluminum-based metal material are in contact with each other. A melted portion formed at the butting portion of
A dissimilar metal joined body characterized by comprising: 鉄系金属材料の端面とアルミニウム系金属材料の端面とを突き合せ、
前記鉄系金属材料の端面近傍を加熱手段により加熱することにより前記鉄系金属材料と前記アルミニウム系金属材料の突合せ部分に溶融部を形成する
ことにより前記鉄系金属材料と前記アルミニウム系金属材料とを接合する異種金属接合方法。 The end face of the iron-based metal material and the end face of the aluminum-based metal material are matched,
The vicinity of the end surface of the iron-based metal material is heated by a heating means to form a melted portion at a butt portion of the iron-based metal material and the aluminum-based metal material, thereby forming the iron-based metal material and the aluminum-based metal material. Dissimilar metal joining method to join.
JP2018021927A 2018-02-09 2018-02-09 Dissimilar metal conjugate Pending JP2019136739A (en)

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