JPH05111776A - Resistance spot welding method for steel sheet and aluminum alloy sheet - Google Patents
Resistance spot welding method for steel sheet and aluminum alloy sheetInfo
- Publication number
- JPH05111776A JPH05111776A JP3264922A JP26492291A JPH05111776A JP H05111776 A JPH05111776 A JP H05111776A JP 3264922 A JP3264922 A JP 3264922A JP 26492291 A JP26492291 A JP 26492291A JP H05111776 A JPH05111776 A JP H05111776A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- spot welding
- steel sheet
- sheet
- electrode tip
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鋼板とアルミニウム合
金板の抵抗スポット溶接方法に関し、特に鋼板とアルミ
ニウム合金板とをスポット溶接して十分な接合強度を有
する接合部を形成することができる方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resistance spot welding method for a steel sheet and an aluminum alloy sheet, and more particularly to a method capable of spot welding a steel sheet and an aluminum alloy sheet to form a joint having sufficient joint strength. Regarding
【０００２】[0002]
【従来の技術】近年、資源の有効利用や大気中のＣＯ2
の増加による地球温暖化等に対する地球環境保護の観点
から、自動車に対して燃料節減につながる軽量化のニー
ズが高まっており、これに適応する材料として、信頼
性、加工性、リサイクル利用の容易さ等の種々の利点を
有するため、アルミニウムまたはアルミニウム合金板が
脚光を浴び、自動車用の素材として多用されつつある。2. Description of the Related Art In recent years, effective use of resources and CO 2 in the atmosphere
From the perspective of protecting the global environment against global warming due to the increase in fuel consumption, there is an increasing need for automobiles to be lighter in weight, which leads to fuel saving. Since it has various advantages such as aluminum, aluminum or aluminum alloy plate has been in the spotlight and is being widely used as a material for automobiles.
【０００３】そのため、アルミニウムまたはアルミニウ
ム合金板を各種部材に適用するにつれて、今後、自動車
の生産工程においては、鋼板製の部材とアルミニウムま
たはアルミニウム合金板からなる部材とが混在し、溶接
により鋼板とアルミニウムまたはアルミニウム合金板と
を接合することが多くなることが予想される。Therefore, as aluminum or aluminum alloy plates are applied to various members, steel plate members and aluminum or aluminum alloy plate members will coexist in the production process of automobiles in the future, and the steel plates and aluminum will be welded together. Alternatively, it is expected that the aluminum alloy plate is often joined.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来の鋼板同
士の接合に用いられている単相交流抵抗スポット溶接機
をそのまま鋼板とアルミニウム合金板との溶接に適用し
ても、鋼板とアルミニウム合金板は熱伝導率、固有抵抗
値、比熱等の特性において著しく異なるため、図２に示
すように、鋼板１１とアルミニウム合金板１２との界面
１３にナゲットが形成されず、鋼板側に偏った位置にナ
ゲット１４が形成される傾向があり、界面１３に良好な
ナゲットが形成されない。そのため、得られる接合は、
母材の溶融を伴わない面接合しか実現されず、十分な接
合強度を有する溶接が達成されなかった。However, even if the conventional single-phase AC resistance spot welding machine used for joining steel sheets to each other is directly applied to the welding of the steel sheet and the aluminum alloy sheet, the steel sheet and the aluminum alloy sheet can be welded. 2 are remarkably different in properties such as thermal conductivity, specific resistance value, specific heat, and the like, as shown in FIG. 2, no nugget is formed at the interface 13 between the steel plate 11 and the aluminum alloy plate 12, and the position is biased to the steel plate side. The nugget 14 tends to be formed, and a good nugget is not formed on the interface 13. So the resulting bond is
Only surface bonding without melting of the base material was realized, and welding having sufficient bonding strength was not achieved.
【０００５】そこで本発明の目的は、鋼板とアルミニウ
ム合金板とをスポット溶接して十分な接合強度を有する
接合部を形成することができる、鋼板とアルミニウム合
金板の抵抗スポット溶接方法を提供することにある。Therefore, an object of the present invention is to provide a resistance spot welding method for a steel sheet and an aluminum alloy sheet, which enables spot welding of the steel sheet and the aluminum alloy sheet to form a joint having a sufficient joint strength. It is in.
【０００６】[0006]
【課題を解決するための手段】本発明は前記課題を解決
するために、鋼板とアルミニウム合金板を直流抵抗スポ
ット溶接する方法であって、直流抵抗スポット溶接機の
陽極電極チップをアルミニウム合金板に、陰極電極チッ
プを鋼板に配置して溶接を行う工程を有する、鋼板とア
ルミニウム合金板の抵抗スポット溶接方法を提供するも
のである。In order to solve the above problems, the present invention is a method of spot welding a steel plate and an aluminum alloy plate to each other by direct current resistance spot welding, wherein the anode electrode tip of a direct current resistance spot welding machine is welded to the aluminum alloy plate. The present invention provides a resistance spot welding method for a steel plate and an aluminum alloy plate, which has a step of arranging the cathode electrode tip on the steel plate and performing welding.
【０００７】以下、本発明の鋼板とアルミニウム合金板
の抵抗スポット溶接方法（以下、「本発明の方法」とい
う）について詳細に説明する。The resistance spot welding method for the steel plate and the aluminum alloy plate of the present invention (hereinafter referred to as the "method of the present invention") will be described in detail below.
【０００８】本発明の方法において、アルミニウム合金
板（以下、「Ａｌ合金板」と略す）とは、アルミニウム
板と、アルミニウムと他の元素とを含むアルミニウム合
金板とを総称していう。In the method of the present invention, the aluminum alloy plate (hereinafter abbreviated as "Al alloy plate") is a generic term for an aluminum plate and an aluminum alloy plate containing aluminum and other elements.
【０００９】以下、本発明の方法の一実施態様を示す図
１に基づいて本発明の方法を説明する。この実施態様に
おいて、鋼板１とＡｌ合金板２とは、Ａｌ合金板２の外
面側に陽極電極チップ３が当接され、鋼板１の外面側に
陰極電極チップ４が当接される。陽極電極チップ３と陰
極電極チップ４とは重ね合わされた鋼板１とＡｌ合金板
２とを挟むように、加圧される。陽極電極チップ３と陰
極電極チップ４には、直流電源（図示せず）から直流電
圧が印加され、陽極電極チップ３からＡｌ合金板２、鋼
板１、陰極電極チップ４の方向に直流の溶接電流が通過
し、この溶接電流によってＡｌ合金板２と鋼板１の界面
が抵抗発熱により加熱されてナゲット５が形成される。The method of the present invention will be described below with reference to FIG. 1 showing one embodiment of the method of the present invention. In this embodiment, the steel plate 1 and the Al alloy plate 2 are contacted with the anode electrode tip 3 on the outer surface side of the Al alloy plate 2 and the cathode electrode chip 4 on the outer surface side of the steel sheet 1. The anode electrode tip 3 and the cathode electrode tip 4 are pressed so as to sandwich the superposed steel plate 1 and Al alloy plate 2. A DC voltage is applied to the anode electrode tip 3 and the cathode electrode tip 4 from a DC power source (not shown), and a DC welding current flows from the anode electrode tip 3 to the Al alloy plate 2, the steel plate 1, and the cathode electrode tip 4. Of the Al alloy plate 2 and the steel plate 1 are heated by resistance heating due to this welding current to form the nugget 5.
【００１０】本発明の方法において、使用する電極チッ
プの形状、材質、電流値、電流波形、電圧値、通電時
間、電極加圧力、冷却水量等の溶接条件は、特に制限さ
れず、母材である鋼板およびＡｌ合金板の材質、板厚等
によって適宜選択される。また、用いられる直流抵抗ス
ポット溶接機も特に制限されない。In the method of the present invention, the welding conditions such as the shape, material, current value, current waveform, voltage value, energizing time, electrode pressure, cooling water amount, etc. of the electrode tip to be used are not particularly limited. It is appropriately selected depending on the material and plate thickness of a certain steel plate and Al alloy plate. Further, the DC resistance spot welding machine used is not particularly limited.
【００１１】本発明の方法によって溶接される鋼板およ
びＡｌ合金板は、特に制限されず、いずれのものでもよ
い。The steel plate and Al alloy plate to be welded by the method of the present invention are not particularly limited, and any of them may be used.
【００１２】[0012]
【作用】本発明の方法において、陽極電極チップをＡｌ
合金板に配置し、陰極電極チップを鋼板に配置して溶接
を行うことにより、形成されるナゲットは極性効果によ
って陽極側に偏位し、Ａｌ合金板の溶け込み量が増加す
る。そのため、従来、鋼板とＡｌ合金板の溶接において
は、熱伝導率、固有抵抗値、比熱等の点で、鋼板側にナ
ゲットが偏位する傾向があったのに対して、本発明の方
法によれば、Ａｌ合金板と鋼板の界面にナゲットか形成
され、十分な接合強度を有する溶接が達成されると、考
えられる。In the method of the present invention, the anode electrode tip is made of Al.
By arranging on the alloy plate, arranging the cathode electrode tip on the steel plate and performing welding, the formed nugget is displaced to the anode side due to the polar effect, and the amount of penetration of the Al alloy plate increases. Therefore, conventionally, in welding of a steel plate and an Al alloy plate, the nugget tended to be deviated to the steel plate side in terms of thermal conductivity, specific resistance value, specific heat, etc. According to this, it is considered that a nugget is formed at the interface between the Al alloy plate and the steel plate, and welding having sufficient joint strength is achieved.
【００１３】[0013]
【実施例】以下、本発明の実施例および比較例に基づい
て、本発明をさらに具体的に説明する。EXAMPLES The present invention will be described more specifically below based on Examples of the present invention and Comparative Examples.
【００１４】（実施例１）Ａｌ合金板（５０００系）と
鋼板（軟鋼板）とを重ね合わせ、直流抵抗スポット溶接
機（ミヤチテクノス社製、電極チップ………Ｒ型電極
（１００Ｒ））を用い、陽極電極チップをＡｌ合金板側
に、陰極電極チップを鋼板側に当接して、下記条件でス
ポット溶接して、試料片を作成した。 溶接電流：１６ｋＡ 電極加圧力：２５０kgf 得られた試料片の溶接部を切断して溶接部の断面を目視
にて観察したところ、ナゲットが鋼板とＡｌ合金板との
接合界面に形成されていた。(Example 1) An Al alloy plate (5000 series) and a steel plate (mild steel plate) were superposed on each other, and a DC resistance spot welder (manufactured by Miyachi Technos, electrode tip ... R type electrode (100R)) was used. Then, the anode electrode tip was brought into contact with the Al alloy plate side and the cathode electrode tip was brought into contact with the steel sheet side, and spot welding was performed under the following conditions to prepare a sample piece. Welding current: 16 kA Electrode pressure: 250 kgf When the welded part of the obtained sample piece was cut and the cross section of the welded part was visually observed, a nugget was formed at the joint interface between the steel plate and the Al alloy plate.
【００１５】（比較例１）交流抵抗スポット溶接機を用
いる以外は、実施例１と同様にして溶接を行い、試料片
を作成した。得られた試料片を切断して溶接部の断面を
目視にて観察したところ、鋼板とＡｌ合金板との界面に
ナゲットが形成されていなかった。Comparative Example 1 Welding was performed in the same manner as in Example 1 except that an AC resistance spot welder was used to prepare a sample piece. When the obtained sample piece was cut and the cross section of the welded portion was visually observed, no nugget was formed at the interface between the steel plate and the Al alloy plate.
【００１６】（比較例２）直流抵抗スポット溶接機を用
い、陽極電極チップを鋼板側に、陰極電極チップをＡｌ
合金板側に当接して実施例１と同じ条件でスポット溶接
を行って試料片を作製した。得られた試料片を切断して
溶接部の断面を目視にて観察したところ、鋼板とＡｌ合
金板との界面にナゲットが形成されていなかった。(Comparative Example 2) Using a DC resistance spot welding machine, the anode electrode tip is on the steel plate side and the cathode electrode tip is Al.
A sample piece was produced by contacting the alloy plate side and spot welding under the same conditions as in Example 1. When the obtained sample piece was cut and the cross section of the welded portion was visually observed, no nugget was formed at the interface between the steel plate and the Al alloy plate.
【００１７】[0017]
【発明の効果】本発明の方法によれば、鋼板とアルミニ
ウム合金板とをスポット溶接して十分な接合強度を有す
る接合部を形成することができる。そのため、本発明の
方法は、ますますアルミニウム合金板が多用される傾向
にある自動車の製造工程において、要求される鋼板とア
ルミニウム合金板との溶接に際して有用な方法である。According to the method of the present invention, a steel plate and an aluminum alloy plate can be spot-welded to form a joint having a sufficient joint strength. Therefore, the method of the present invention is a useful method for welding a required steel plate and an aluminum alloy plate in the manufacturing process of automobiles in which the aluminum alloy plate tends to be used more and more.
【図１】本発明の方法の実施態様を説明する模式断面
図。FIG. 1 is a schematic cross-sectional view illustrating an embodiment of a method of the present invention.
【図２】単相交流抵抗スポット溶接法による鋼板とアル
ミニウム合金板の溶接における接合状態を説明する模式
断面図。FIG. 2 is a schematic cross-sectional view illustrating a joining state in welding a steel plate and an aluminum alloy plate by a single-phase AC resistance spot welding method.
１ 鋼板 ２ アルミニウム合金板 ３ 陽極電極チップ ４ 陰極電極チップ ５ ナゲット １１ 鋼板 １２ アルミニウム合金板 １３ 鋼板とアルミニウム合金板の界面 １４ ナゲット DESCRIPTION OF SYMBOLS 1 Steel plate 2 Aluminum alloy plate 3 Anode electrode tip 4 Cathode electrode tip 5 Nugget 11 Steel plate 12 Aluminum alloy plate 13 Interface between steel plate and aluminum alloy plate 14 Nugget
Claims (1)
ット溶接する方法であって、直流抵抗スポット溶接機の
陽極電極チップをアルミニウム合金板に、陰極電極チッ
プを鋼板に配置して溶接を行う工程を有する、鋼板とア
ルミニウム合金板の抵抗スポット溶接方法。1. A method for spot-welding a steel plate and an aluminum alloy plate by direct current resistance spot welding, comprising the steps of arranging an anode electrode tip of a direct current resistance spot welder on an aluminum alloy sheet and a cathode electrode tip on the steel sheet and performing welding. A resistance spot welding method for a steel plate and an aluminum alloy plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3264922A JPH05111776A (en) | 1991-10-14 | 1991-10-14 | Resistance spot welding method for steel sheet and aluminum alloy sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3264922A JPH05111776A (en) | 1991-10-14 | 1991-10-14 | Resistance spot welding method for steel sheet and aluminum alloy sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05111776A true JPH05111776A (en) | 1993-05-07 |
Family
ID=17410061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3264922A Withdrawn JPH05111776A (en) | 1991-10-14 | 1991-10-14 | Resistance spot welding method for steel sheet and aluminum alloy sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05111776A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0865860A1 (en) * | 1995-09-18 | 1998-09-23 | Honda Giken Kogyo Kabushiki Kaisha | Method of lap joining two kinds of metallic members having different melting points |
| JP2005152959A (en) * | 2003-11-26 | 2005-06-16 | Kobe Steel Ltd | Joint body of different material of steel material and aluminum material |
| WO2005102586A1 (en) * | 2004-04-21 | 2005-11-03 | Kabushiki Kaisha Kobe Seiko Sho | Joined body of dissimilar materials comprising steel material and aluminum material, and joining method therefor |
| JP2005334971A (en) * | 2004-04-28 | 2005-12-08 | Kobe Steel Ltd | Resistance spot welding method for aluminum material and steel material, and weld joint |
| JP2006167801A (en) * | 2004-11-22 | 2006-06-29 | Kobe Steel Ltd | Joined body of dissimilar materials comprising steel material and aluminum material and joining method therefor |
| EP1728578A1 (en) * | 2005-06-01 | 2006-12-06 | Kabushiki Kaisha Kobe Seiko Sho | Steel sheet for dissimilar materials weldbonding to aluminum material and dissimilar materials bonded body |
| JP2011083783A (en) * | 2009-10-13 | 2011-04-28 | Honda Motor Co Ltd | Resistance welding method |
| WO2011092713A2 (en) * | 2010-01-29 | 2011-08-04 | Aditya Birla Science And Technology Company Limited | An electrically conductive coating for spot welding applications |
| JP2014172053A (en) * | 2013-03-06 | 2014-09-22 | Nippon Steel & Sumitomo Metal | Manufacturing method of weld joint |
| CN104607784A (en) * | 2013-11-04 | 2015-05-13 | 上海工程技术大学 | Method for connecting titanium alloy and aluminum alloy dissimilar materials by resistance spot welding process |
| CN105269137A (en) * | 2014-07-24 | 2016-01-27 | 吉林大学 | Intermediate frequency spot welding method for aluminum alloy and zinc-plated high-strength steel dissimilar material |
-
1991
- 1991-10-14 JP JP3264922A patent/JPH05111776A/en not_active Withdrawn
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6037559A (en) * | 1995-09-18 | 2000-03-14 | Honda Giken Kogyo Kabushiki Kaisha | Process for lap joining two kinds of metallic members having different melting points |
| EP0865860A4 (en) * | 1995-09-18 | 2001-08-16 | Honda Motor Co Ltd | Method of lap joining two kinds of metallic members having different melting points |
| EP0865860A1 (en) * | 1995-09-18 | 1998-09-23 | Honda Giken Kogyo Kabushiki Kaisha | Method of lap joining two kinds of metallic members having different melting points |
| JP2005152959A (en) * | 2003-11-26 | 2005-06-16 | Kobe Steel Ltd | Joint body of different material of steel material and aluminum material |
| WO2005102586A1 (en) * | 2004-04-21 | 2005-11-03 | Kabushiki Kaisha Kobe Seiko Sho | Joined body of dissimilar materials comprising steel material and aluminum material, and joining method therefor |
| US7951465B2 (en) | 2004-04-21 | 2011-05-31 | Kobe Steel, Ltd. | Joined body of dissimilar materials comprising steel material and aluminum material, and joining method therefor |
| JP4502873B2 (en) * | 2004-04-28 | 2010-07-14 | 株式会社神戸製鋼所 | Resistance spot welding method for aluminum and iron materials |
| JP2005334971A (en) * | 2004-04-28 | 2005-12-08 | Kobe Steel Ltd | Resistance spot welding method for aluminum material and steel material, and weld joint |
| JP4690087B2 (en) * | 2004-11-22 | 2011-06-01 | 株式会社神戸製鋼所 | Dissimilar joints of steel and aluminum and their joining methods |
| JP2006167801A (en) * | 2004-11-22 | 2006-06-29 | Kobe Steel Ltd | Joined body of dissimilar materials comprising steel material and aluminum material and joining method therefor |
| US7521129B2 (en) | 2005-06-01 | 2009-04-21 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Steel sheet for dissimilar materials weldbonding to aluminum material and dissimilar materials bonded body |
| EP1728578A1 (en) * | 2005-06-01 | 2006-12-06 | Kabushiki Kaisha Kobe Seiko Sho | Steel sheet for dissimilar materials weldbonding to aluminum material and dissimilar materials bonded body |
| JP2011083783A (en) * | 2009-10-13 | 2011-04-28 | Honda Motor Co Ltd | Resistance welding method |
| WO2011092713A2 (en) * | 2010-01-29 | 2011-08-04 | Aditya Birla Science And Technology Company Limited | An electrically conductive coating for spot welding applications |
| WO2011092713A3 (en) * | 2010-01-29 | 2011-10-06 | Aditya Birla Science And Technology Company Limited | Electrically conductive coating for spot welding applications and process thereof |
| JP2014172053A (en) * | 2013-03-06 | 2014-09-22 | Nippon Steel & Sumitomo Metal | Manufacturing method of weld joint |
| CN104607784A (en) * | 2013-11-04 | 2015-05-13 | 上海工程技术大学 | Method for connecting titanium alloy and aluminum alloy dissimilar materials by resistance spot welding process |
| CN105269137A (en) * | 2014-07-24 | 2016-01-27 | 吉林大学 | Intermediate frequency spot welding method for aluminum alloy and zinc-plated high-strength steel dissimilar material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990107 |