JPH10314933A - Method of joining aluminum material to iron material - Google Patents
Method of joining aluminum material to iron materialInfo
- Publication number
- JPH10314933A JPH10314933A JP12550497A JP12550497A JPH10314933A JP H10314933 A JPH10314933 A JP H10314933A JP 12550497 A JP12550497 A JP 12550497A JP 12550497 A JP12550497 A JP 12550497A JP H10314933 A JPH10314933 A JP H10314933A
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- JP
- Japan
- Prior art keywords
- aluminum
- flux
- joining
- heating
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、アルミニウム材
料と鉄材料のろう付による接合方法に関するものであっ
て、特に自動車等の輸送機器、電気製品等の構成部材の
製造に好適な接合方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining method by brazing an aluminum material and an iron material, and more particularly to a joining method suitable for manufacturing components such as transportation equipment such as automobiles and electric products.
【０００２】なお、この明細書において、「アルミニウ
ム」および「鉄」の語は、それぞれの合金をも含む意味
で用いる。[0002] In this specification, the terms "aluminum" and "iron" are used to include their respective alloys.
【０００３】[0003]
【従来の技術】アルミニウム材料と鉄材料との異種材料
の接合においては、脆弱な金属間化合物が生成されるた
め、通常の溶接やろう付では優れた継手を作ることは困
難とされている。そのため、超音波接合等の固相接合に
よる方法を採ったり、ろう付による場合でも、鉄材料の
表面にめっきや溶射等によりＡｇ、Ｓｎ、Ｚｎ、Ａｌ等
の層を形成し、アルミニウムろう材に対してぬれ易くす
る等の特別な処理がなされる。2. Description of the Related Art In the joining of dissimilar materials of an aluminum material and an iron material, a brittle intermetallic compound is generated, so that it is difficult to form an excellent joint by ordinary welding or brazing. For this reason, even when employing a method such as ultrasonic bonding or solid-phase bonding or brazing, a layer of Ag, Sn, Zn, Al, or the like is formed on the surface of the iron material by plating or thermal spraying to form a layer on the aluminum brazing material. Special processing, such as making it easier to wet, is performed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、固相接
合では、接合に時間がかかる上に金属間化合物の生成を
抑制することができず、継手強度に問題があった。ま
た、ろう付では、鉄材料の表面処理により比較的良好な
結果が得られるものの、継手強度には依然として問題が
あった。However, in solid-state joining, it takes a long time to join, and it is not possible to suppress the formation of an intermetallic compound, and there is a problem in joint strength. Further, in brazing, although relatively good results can be obtained by surface treatment of an iron material, there is still a problem in joint strength.
【０００５】この発明は、このような技術背景に鑑み、
短時間の作業で強い接合強度を得られるアルミニウム材
料と鉄材料の接合方法を目的とする。The present invention has been made in view of such technical background,
An object of the present invention is to provide a method for joining an aluminum material and an iron material that can obtain a strong joining strength in a short time.
【０００６】[0006]
【課題を解決するための手段】この発明のアルミニウム
材料と鉄材料の接合方法は、前記目的を達成するため
に、基本的に、アルミニウム材料（１）とアルミニウム
めっきされた鉄材料（２）との接合部に、ろう材成分お
よびフラックス成分の圧粉成形体からなるフラックス含
有ろう材（４）を配置し、前記接合部を加熱して前記フ
ラックス含有ろう材（４）を溶融させ、これらの材料
（１）（２）を接合することを特徴とする。In order to achieve the above object, the method for joining an aluminum material and an iron material according to the present invention basically includes an aluminum material (1) and an aluminum-plated iron material (2). A flux-containing brazing material (4) composed of a green compact of a brazing material component and a flux component is arranged at the joint of (1), and the joint is heated to melt the flux-containing brazing material (4). It is characterized by joining the materials (1) and (2).
【０００７】また、前記接合方法において、前記加熱
は、大気中で前記アルミニウム材料（１）を介してレー
ザを照射して熱伝導加熱により行うことが好ましい。さ
らに、前記アルミニウム材料（１）または鉄材料（２）
の少なくとも一方の接合部に凹部（３）を形成し、該凹
部（３）内に前記フラックス含有ろう材（４）を配置す
ることが好ましい。Further, in the bonding method, it is preferable that the heating is performed by heat conduction heating by irradiating a laser through the aluminum material (1) in the atmosphere. Further, the aluminum material (1) or the iron material (2)
Preferably, a concave portion (3) is formed in at least one of the joints, and the flux-containing brazing material (4) is disposed in the concave portion (3).
【０００８】この発明においては、鉄材料（２）の表面
にアルミニウムめっきを施し、後述のアルミニウム系ろ
う材に対するぬれ性を改善してろう付性を向上を図る。
めっき方法は特に限定されないが、めっき層の厚さは５
〜２００μｍ程度が好ましい。In the present invention, the surface of the iron material (2) is plated with aluminum to improve the wettability to an aluminum-based brazing material described later to improve the brazing property.
The plating method is not particularly limited, but the thickness of the plating layer is 5
About 200 μm is preferred.
【０００９】前記フラックス含有ろう材（４）とは、粉
末状のろう材成分とフラックス成分とを均一に混合して
圧粉成形したものであり、先に本出願人が出願し特開平
６−３０４７７８号公報に記載された異種金属間接合用
のろう材を例示できる。具体的には、前記フラックス含
有ろう材は、３〜１５wt％のＳｉと残部Ａｌとからなる
Ａｌ−Ｓｉ系ろう材成分とフラックス成分とが重量比で
９９．９：０．１〜７０：３０の割合で配合された混合
粉末を、密度が理論値の９０％以上に圧粉固形化された
ものであって、接合部にろう材と適量のフラックスとを
同時に供給できるという特長がある。このようなフラッ
クス含有ろう材（４）を使用することにより、接合部の
酸化物を除去するだけでなく、Ａｌ−Ｆｅ金属間化合物
の生成を抑制して継手強度を向上させることができる。
また、溶融気化したフラックスが接合部を外部から遮断
し、ビード表面の酸化を防ぐことができる。なお、この
発明のアルミニウム材料と鉄材料とのろう付接合では、
ろう材成分とフラックス成分とが９９：１〜８５：１５
で配合されたものを使用することが好ましい。The flux-containing brazing material (4) is obtained by uniformly mixing a powdery brazing material component and a flux component and compacting the mixture. A brazing material for joining between dissimilar metals described in Japanese Patent No. 304778 can be exemplified. Specifically, the flux-containing brazing material has a weight ratio of an Al-Si-based brazing material component composed of 3 to 15 wt% of Si and the balance of Al to a flux component of 99.9: 0.1 to 70:30. The powder is solidified into a powder having a density of 90% or more of the theoretical value and has a feature that a brazing filler metal and an appropriate amount of flux can be simultaneously supplied to the joint. By using such a flux-containing brazing material (4), not only the oxide at the joint can be removed, but also the formation of the Al-Fe intermetallic compound can be suppressed to improve the joint strength.
Further, the melted and vaporized flux blocks the joint from the outside, thereby preventing oxidation of the bead surface. In the brazing joining of the aluminum material and the iron material according to the present invention,
The brazing filler metal component and the flux component are 99: 1 to 85:15.
It is preferable to use those blended in the above.
【００１０】また、ろう材溶融のための加熱は、接合部
へのレーザ照射や雰囲気加熱等の周知の手段で行う。こ
れらの加熱方法のうちでも、アルミニウム材料（１）を
介してレーザ熱伝導加熱により行うことが好ましい。こ
れは、フラックス含有ろう材（４）を直接加熱せずアル
ミニウム材料（１）ごしに加熱することにより、ろう材
（４）を均一かつ適正な温度に昇温させることができ、
局部的な高温化を回避できるからである。その結果、ろ
う材（４）の酸化が抑制され、非酸化雰囲気で加熱する
必要がなくなり大気中での加熱が可能となる。また、鉄
材料（２）側ではなくアルミニウム材料（１）側から加
熱するのは、アルミニウムの方が熱伝導率が高く熱効率
が良いからである。また、加熱源のレーザの種類は限定
されず、炭酸ガスレーザ、ＹＡＧレーザ等を例示でき
る。Heating for melting the brazing material is performed by a known means such as laser irradiation or atmosphere heating to the joint. Among these heating methods, it is preferable to perform heating by laser heat conduction through the aluminum material (1). This is because by heating the flux-containing brazing material (4) through the aluminum material (1) without directly heating it, the brazing material (4) can be heated to a uniform and appropriate temperature.
This is because local high temperature can be avoided. As a result, the oxidation of the brazing material (4) is suppressed, and it is not necessary to heat in a non-oxidizing atmosphere, and heating in the atmosphere becomes possible. The reason for heating from the aluminum material (1) side instead of the iron material (2) side is that aluminum has higher thermal conductivity and better thermal efficiency. The type of the laser as the heating source is not limited, and examples thereof include a carbon dioxide laser and a YAG laser.
【００１１】また、前記フラックス含有ろう材（４）が
直接加熱されないように、アルミニウム材料（１）また
は鉄材料（２）のいずれか一方または両方の接合部に、
ろう材（４）を配置するための凹部（３）を形成し、こ
れらを組付けることによりろう材（４）が露出しないよ
うにすることが好ましい。接合部にろう材配置用の凹部
（３）を設けることにより、ろう材（４）に対するレー
ザの直接照射が確実に回避されてろう材の酸化が抑制さ
れる。[0011] Further, in order to prevent the flux-containing brazing material (4) from being directly heated, one of or both of the aluminum material (1) and the iron material (2) is bonded to the joint.
It is preferable to form recesses (3) for arranging the brazing material (4) and to assemble them so that the brazing material (4) is not exposed. By providing the brazing filler metal recess (3) at the joint, direct irradiation of the brazing filler metal (4) with laser is reliably avoided, and oxidation of the brazing filler metal is suppressed.
【００１２】[0012]
【実施例】次に、この発明の接合方法の具体的実施例に
ついて、図面を参照しつつ説明する。Next, specific embodiments of the joining method of the present invention will be described with reference to the drawings.
【００１３】接合試験体として、図１に示すように、Ａ
３００３からなり厚さ３mmのアルミニウム板（１）およ
びＳＵＳ ３０４からなり厚さ１mmの鋼板（２）の重ね
継手を用いた。前記アルミニウム（１）の接合部には接
合予定幅の全幅に渡って凹部（３）が形成されている。
また、前記鋼板（２）は表面に厚さ２０μｍのアルミニ
ウムめっきが施されている。[0013] As shown in FIG.
A lap joint of an aluminum plate (1) made of 3003 and having a thickness of 3 mm and a steel plate (2) made of SUS 304 and having a thickness of 1 mm was used. A concave portion (3) is formed in the joint portion of the aluminum (1) over the entire width to be joined.
The surface of the steel plate (2) is plated with aluminum having a thickness of 20 μm.
【００１４】実施例に使用するフラックス含有ろう材
は、ろう材成分としてＡｌ粉末、Ｓｉ粉末を、フラック
ス成分としてＫＦとＡｌＦ３の共晶組成物の粉末を使用
し、これらの混合粉末を次の工程により圧粉成形したの
ち所要形状に二次成形した。The flux-containing brazing filler metal used in the examples uses Al powder and Si powder as the brazing filler metal components, and powder of a eutectic composition of KF and AlF 3 as the flux components. After compacting by the process, secondary molding was performed to the required shape.
【００１５】まず、前記ろう材成分組成として１０wt％
のＳｉと残部Ａｌとからなり、さらにこのろう材成分と
フラックス成分との割合が重量比で９５：５となるよう
に、混合粉末を調整した。一方、前記ろう材成分と同一
組成のＡｌ−Ｓｉ合金からなる板材により、外径３イン
チ×長さ２００mmの円筒形の容器を作成した。First, the composition of the brazing filler metal is 10 wt%.
The mixed powder was adjusted so that the weight ratio of the brazing filler metal component to the flux component was 95: 5. On the other hand, a cylindrical container having an outer diameter of 3 inches and a length of 200 mm was prepared from a plate made of an Al-Si alloy having the same composition as the brazing filler metal component.
【００１６】次いで、前記容器に前記混合粉末を充填し
たのち、容器を５００℃の炉中に配置し、炉内を１mmHg
以下の真空にして脱ガスした。さらに、４８０℃で熱間
プレスを用いて最大圧力４００トンにて熱圧成形するこ
とにより、混合粉末の圧粉体は固形化されるとともに容
器と実質的に一体化されて、所期組成のろう材を得た。
なお、脱ガスおよびプレスにより固形化された圧粉体は
高さ１１０mmとなった次いで、このろう材を、容器を除
去することなく熱間押出機により温度５００℃で直径２
mmの線材に押出成形し、実施例に使用するフラックス含
有Ａｌ合金ろう材を得た。Next, after the mixed powder is filled in the container, the container is placed in a furnace at 500 ° C., and the inside of the furnace is set to 1 mmHg.
It was degassed by applying the following vacuum. Further, by hot pressing at a maximum pressure of 400 tons using a hot press at 480 ° C., the green compact of the mixed powder is solidified and substantially integrated with the container to obtain the desired composition. Obtained brazing filler metal.
The compact compacted by degassing and pressing had a height of 110 mm. Then, the brazing material was heated at a temperature of 500 ° C. by a hot extruder at a temperature of 500 ° C. without removing the container.
It was extruded into a wire having a diameter of mm to obtain a flux-containing Al alloy brazing material used in the examples.
【００１７】一方、比較例では、前記フラックス含有ろ
う材（４）の代わりにＪＩＳ Ａ４０４３−ＢＹを使用
した。On the other hand, in the comparative example, JIS A4043-BY was used in place of the flux-containing brazing material (4).
【００１８】そして、図１に示すようにアルミニウム板
（１）と鋼板（２）の両端部を重ねるとともにアルミニ
ウム板（１）の凹部（３）内にフラックス含有ろう材
（４）あるいはＪＩＳ Ａ４０４３−ＢＹを配置した。
そして、アルミニウム板（１）側から炭酸ガスレーザを
照射して熱伝導加熱を行いろう付した。レーザ条件は、
実施例、比較例ともに、３．５ｋＷ，２ｍ／ｍｉｎとし
た。Then, as shown in FIG. 1, both ends of the aluminum plate (1) and the steel plate (2) are overlapped, and the flux-containing brazing material (4) or JIS A4043- is placed in the recess (3) of the aluminum plate (1). BY was placed.
Then, the aluminum plate (1) was irradiated with carbon dioxide gas laser to perform heat conduction heating and brazing. Laser conditions are
In both Examples and Comparative Examples, the power was 3.5 kW and 2 m / min.
【００１９】このようにして接合した重ね継手につい
て、常法により引張試験を行った。引張強度および破断
位置を表１に示す。The lap joint thus joined was subjected to a tensile test by a conventional method. Table 1 shows the tensile strength and the breaking position.
【００２０】[0020]
【表１】 [Table 1]
【００２１】表１の結果から、レーザ熱伝導加熱におい
てフラックス含有ろう材を使用することによりアルミニ
ウム材料と鉄材料とが良好に接合されることを確認でき
た。From the results shown in Table 1, it was confirmed that the use of the flux-containing brazing material in the laser heat conduction heating enables the aluminum material and the iron material to be joined well.
【００２２】[0022]
【発明の効果】以上説明したように、この発明は、アル
ミニウム材料とアルミニウムめっきされた鉄材料との接
合部に、ろう材成分およびフラックス成分の圧粉成形体
からなるフラックス含有ろう材を配置し、前記接合部を
加熱して前記フラックス含有ろう材を溶融させ、これら
の材料を接合するものであるから、接合部にろう材とと
もにフラックスが均一に供給される。そのため、酸化物
除去に加えて、Ａｌ−Ｆｅ金属間化合物の生成が抑制さ
れ、継手強度を向上させることができる。また、溶融気
化したフラックスが接合部を外部から遮断し、ビード表
面の酸化を防ぐこともできる。さらに、接合時間は従来
のろう付と同等であり、格別の時間を要さない。As described above, according to the present invention, a flux-containing brazing material comprising a compact formed of a brazing material component and a flux component is disposed at a joint between an aluminum material and an aluminum-plated iron material. Since the joining portion is heated to melt the flux-containing brazing material and join these materials, the flux is uniformly supplied to the joining portion together with the brazing material. Therefore, in addition to the removal of the oxide, the generation of the Al-Fe intermetallic compound is suppressed, and the joint strength can be improved. Further, the melted and vaporized flux blocks the joint from the outside, thereby preventing the bead surface from being oxidized. Furthermore, the joining time is equivalent to that of the conventional brazing, and does not require any special time.
【００２３】また、前記加熱方法として、前記アルミニ
ウム材料を介してレーザを照射して熱伝導加熱により行
うことにより、前記フラックス含有ろう材は適正な温度
で均一に溶融されるから、ろう材の酸化が少なく、大気
中での加熱接合が可能となる。また、上述の理由により
大気中での加熱が可能となるが、大気中で加熱すること
により、接合作業や接合設備を簡略化できる。Further, as the heating method, the flux-containing brazing material is uniformly melted at an appropriate temperature by irradiating a laser through the aluminum material and performing heat conduction heating. And bonding by heating in the atmosphere becomes possible. Although heating in the air is possible for the above-described reason, the heating in the air simplifies the joining operation and the joining equipment.
【００２４】さらに、前記アルミニウム材料または鉄材
料の少なくとも一方の接合部に凹部を形成し、該凹部内
に前記フラックス含有ろう材を配置することにより、ろ
う材に対するレーザの直接照射が確実に回避されてろう
材の酸化が抑制される。Further, by forming a concave portion in at least one of the joining portions of the aluminum material and the iron material and arranging the flux-containing brazing material in the concave portion, direct irradiation of the brazing material with a laser is reliably prevented. Oxidation of the brazing material is suppressed.
【図１】この発明にかかるアルミニウム材料と鉄材料の
接合方法の一実施例を示す斜視図である。FIG. 1 is a perspective view showing one embodiment of a method for joining an aluminum material and an iron material according to the present invention.
１…アルミニウム材料（アルミニウム板） ２…鉄材料（鋼板） ３…凹部 ４…フラックス含有ろう材 DESCRIPTION OF SYMBOLS 1 ... Aluminum material (aluminum plate) 2 ... Iron material (steel plate) 3 ... Recess 4 ... Flux containing brazing material
Claims (3)
めっきされた鉄材料（２）との接合部に、ろう材成分お
よびフラックス成分の圧粉成形体からなるフラックス含
有ろう材（４）を配置し、前記接合部を加熱して前記フ
ラックス含有ろう材（４）を溶融させ、これらの材料
（１）（２）を接合することを特徴とするアルミニウム
材料と鉄材料の接合方法。A flux-containing brazing material (4) comprising a compact of a brazing material component and a flux component is disposed at a joint between an aluminum material (1) and an aluminum-plated iron material (2). A method for joining an aluminum material and an iron material, comprising heating the joining portion to melt the flux-containing brazing material (4) and joining the materials (1) and (2).
材料（１）を介してレーザを照射して熱伝導加熱により
行う請求項１に記載のアルミニウム材料と鉄材料の接合
方法。2. The method for joining an aluminum material and an iron material according to claim 1, wherein the heating is performed by heat conduction heating by irradiating a laser through the aluminum material (1) in the atmosphere.
料（２）の少なくとも一方の接合部に凹部（３）を形成
し、該凹部（３）内に前記フラックス含有ろう材（４）
を配置する請求項１また２のいずれかに記載のアルミニ
ウム材料と鉄材料の接合方法。3. A recess (3) is formed in at least one of the joining portions of the aluminum material (1) and the iron material (2), and the flux-containing brazing material (4) is formed in the recess (3).
The method for joining an aluminum material and an iron material according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12550497A JPH10314933A (en) | 1997-05-15 | 1997-05-15 | Method of joining aluminum material to iron material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12550497A JPH10314933A (en) | 1997-05-15 | 1997-05-15 | Method of joining aluminum material to iron material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10314933A true JPH10314933A (en) | 1998-12-02 |
Family
ID=14911765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12550497A Pending JPH10314933A (en) | 1997-05-15 | 1997-05-15 | Method of joining aluminum material to iron material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10314933A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008137034A (en) * | 2006-11-30 | 2008-06-19 | Honda Motor Co Ltd | Brazing filler metal and brazing method |
| JP2010253496A (en) * | 2009-04-23 | 2010-11-11 | Panasonic Corp | Soldering device and soldering method |
| US8350185B2 (en) | 2009-12-15 | 2013-01-08 | Sungwoo Hitech Co., Ltd. | Laser welding method for steel sheet |
| JP2015147237A (en) * | 2014-02-06 | 2015-08-20 | 株式会社神戸製鋼所 | Manufacturing method for junction, and high energy beam welding junction member |
| US9682446B2 (en) | 2006-02-17 | 2017-06-20 | Kobe Steel, Ltd. | Flux-cored wire for different-material bonding and method of bonding different materials |
| CN108115340A (en) * | 2017-12-15 | 2018-06-05 | 上海交通大学 | A kind of automatic clamping fixture for H profile steel |
| CN111819026A (en) * | 2018-03-05 | 2020-10-23 | 松下知识产权经营株式会社 | Bonding structure and bonding method |
| KR102303760B1 (en) * | 2020-08-11 | 2021-09-17 | 제너셈(주) | Welding method |
-
1997
- 1997-05-15 JP JP12550497A patent/JPH10314933A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9682446B2 (en) | 2006-02-17 | 2017-06-20 | Kobe Steel, Ltd. | Flux-cored wire for different-material bonding and method of bonding different materials |
| JP2008137034A (en) * | 2006-11-30 | 2008-06-19 | Honda Motor Co Ltd | Brazing filler metal and brazing method |
| JP2010253496A (en) * | 2009-04-23 | 2010-11-11 | Panasonic Corp | Soldering device and soldering method |
| US8350185B2 (en) | 2009-12-15 | 2013-01-08 | Sungwoo Hitech Co., Ltd. | Laser welding method for steel sheet |
| JP2015147237A (en) * | 2014-02-06 | 2015-08-20 | 株式会社神戸製鋼所 | Manufacturing method for junction, and high energy beam welding junction member |
| CN108115340A (en) * | 2017-12-15 | 2018-06-05 | 上海交通大学 | A kind of automatic clamping fixture for H profile steel |
| CN108115340B (en) * | 2017-12-15 | 2019-09-10 | 上海交通大学 | A kind of automatic clamping fixture for H profile steel |
| CN111819026A (en) * | 2018-03-05 | 2020-10-23 | 松下知识产权经营株式会社 | Bonding structure and bonding method |
| CN111819026B (en) * | 2018-03-05 | 2022-08-09 | 松下知识产权经营株式会社 | Bonding structure and bonding method |
| KR102303760B1 (en) * | 2020-08-11 | 2021-09-17 | 제너셈(주) | Welding method |
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