JPS6368279A - Spot welding method for laminated steel plate - Google Patents
Spot welding method for laminated steel plateInfo
- Publication number
- JPS6368279A JPS6368279A JP21308786A JP21308786A JPS6368279A JP S6368279 A JPS6368279 A JP S6368279A JP 21308786 A JP21308786 A JP 21308786A JP 21308786 A JP21308786 A JP 21308786A JP S6368279 A JPS6368279 A JP S6368279A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- laminated steel
- spot welding
- steel plates
- laminated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 49
- 229910000576 Laminated steel Inorganic materials 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 24
- 239000011347 resin Substances 0.000 claims abstract description 24
- 238000005304 joining Methods 0.000 claims description 8
- 238000010030 laminating Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229920001342 Bakelite® Polymers 0.000 description 2
- 239000004637 bakelite Substances 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、二枚の表皮鋼板の間に樹脂層を挟んで積層し
た積層鋼板のスポット溶接方法に関し、特に表面の品質
を確保出来る積層鋼板のスポット）容接方法に係わる。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spot welding method for laminated steel plates in which two skin steel plates are laminated with a resin layer sandwiched between them, and in particular, a laminated steel plate that can ensure surface quality. spot) related to reception methods.
近年、自動車においては、車両の振動を抑え、騒音を低
減する、あるいは、車両重量を下げることを目的として
、二枚の表皮鋼板の間に樹脂層を挟んで積層した積層鋼
板が、使われるようになって来ている。In recent years, laminated steel plates, which are made by laminating two skin steel plates with a resin layer sandwiched between them, have been used in automobiles to suppress vehicle vibrations, reduce noise, and reduce vehicle weight. It's becoming.
この積層鋼板をスポット溶接により接合するには、何ら
かの方法で、接合部位の表・裏の表皮鋼板の電気的導通
をとる必要がある。In order to join these laminated steel plates by spot welding, it is necessary to establish electrical continuity between the front and back skin steel plates at the joining site by some method.
その方法として、特開昭５７−５１４５２号公報に開示
されているように、積層鋼板の接合部位に、機械加工、
塑性加工、折り曲げ加工等を施して、予め接合部位の両
表皮鋼板間の電気的導通をとった状態で、通常のスポッ
ト溶接を行う方法がある。As a method for this purpose, as disclosed in Japanese Patent Application Laid-Open No. 57-51452, machining,
There is a method in which ordinary spot welding is performed in a state in which electrical continuity is established between both skin steel plates at the joint portion by performing plastic working, bending, etc.
あるいは、特開昭５７−５１４５２号公報に開示されて
いるように、樹脂層を４電性の物質で形成して、両表皮
鋼板間の電気的導通をとった状態で、通常のスポット溶
接を行う方法がある。Alternatively, as disclosed in Japanese Unexamined Patent Publication No. 57-51452, the resin layer is formed of a tetraelectric substance and ordinary spot welding is performed with electrical continuity between both skin steel plates. There is a way to do it.
この他に、本出願人が考案した接合方法として、溶接電
極を２分割して、間に絶縁体を挟んで互いに電気的に絶
縁し、この２分割された溶接電極間で通電して、表皮鋼
板自身に発生するジュール熱により、その部位の樹脂層
を溶かして排除した後、前記２分割された溶接電極を電
気的に接続して、この溶接電極と積層鋼板の他の側の溶
接電極との間で通電して、スポット溶接により、接合す
る方法（実願昭５９−１９７０９８号）、あるいは、溶
接電極に鋼板間を短絡する補助電極及び短絡ケーブルを
設けて、溶接のための通電初期に、この補助電極及び短
絡ケーブルを介して積層鋼板の表皮鋼板自身に流れる電
流により、表皮鋼板自身を発熱させ、この表皮鋼板自身
の発熱により、その部位の樹脂層を溶かして排除して、
両表皮鋼板間の導通がとれた後は、通常のスポット溶接
が行われる接合方法（実願昭５９−１９３９５３号）が
ある。In addition, as a joining method devised by the applicant, the welding electrode is divided into two parts, an insulator is sandwiched between them to electrically insulate each other, and current is passed between the two parts, and the skin is bonded to the skin. After melting and removing the resin layer in that area using the Joule heat generated in the steel plate itself, the two-part welding electrode is electrically connected, and this welding electrode is connected to the welding electrode on the other side of the laminated steel plate. A method of applying current between the steel plates and joining them by spot welding (Utility Application No. 59-197098), or providing an auxiliary electrode and a short-circuiting cable to short-circuit between the steel plates to the welding electrode, in the initial stage of energization for welding. The current flowing through the skin steel plate of the laminated steel plate through this auxiliary electrode and the short-circuit cable causes the skin steel plate itself to generate heat, and the heat generated by the skin steel plate itself melts and eliminates the resin layer at that location.
There is a joining method (Utility Application No. 59-193953) in which ordinary spot welding is performed after electrical continuity between both skin steel plates is established.
しかし、前記従来のスポット溶接による接合方法では、
第２図及び第３図に示すように、両表皮鋼板５１Ａ、５
１Ｃ間の樹脂層５１Ｂが、溶融した時に体積膨張を起こ
し、この樹脂層５１Ｂの体積膨張により前記表皮ｆ板５
１Ａを外方へ押し出して、この積Ｎ鋼板５１の表面に膨
らみ５２を発生させる。However, in the conventional spot welding method,
As shown in FIGS. 2 and 3, both skin steel plates 51A, 5
The resin layer 51B between 1C causes volumetric expansion when melted, and due to the volumetric expansion of the resin layer 51B, the skin f-plate 5
1A is pushed outward to generate a bulge 52 on the surface of the N steel plate 51.
この積層鋼板５１を、自動車ポデーの外板として用いる
場合、この表面に発生した膨らみ５２は、自動車ボデー
の表面品質を損なうものであり、溶接後、何らかの方法
でこの積層日板５１の表面の膨らみ５２を除去しなけれ
ばならず、生産性が低下すると云う問題がある。When this laminated steel plate 51 is used as the outer panel of an automobile body, the bulge 52 generated on the surface impairs the surface quality of the automobile body. 52 has to be removed, resulting in a problem of reduced productivity.
したがって、本発明の目的は、積層鋼板の抵抗溶接方法
において、筒車な装置で、積層鋼板の表面に膨らみを生
じさせることなく、スポット溶接が行えるようにするこ
とにある。Accordingly, an object of the present invention is to provide a resistance welding method for laminated steel plates in which spot welding can be performed using an hour wheel type device without causing bulges on the surface of the laminated steel plates.
そこで、本発明は、接合部位の周りを溶接電極とは別に
、筒状の押圧部材で押圧した状態で、この筒状の押圧部
材で囲まれた接合部位に溶接電極で通電することにより
接合することを特徴とする。Therefore, in the present invention, the area to be joined is pressed by a cylindrical pressing member separate from the welding electrode, and the joining part surrounded by the cylindrical pressing member is energized by the welding electrode. It is characterized by
具体的には、二枚の表皮鋼板の間に樹脂層を挾んで積層
してなる積層鋼板どうし、又はこの積層鋼板と普通鋼板
とを重ね合わせて、スポット溶接により接合する積層鋼
板の接合方法であって、前記積Ｎｍ板の接合部位の周り
を筒状の押圧部材で押圧した状態で、この筒状の押圧部
材で囲まれた接合部位を溶接電極で加圧して、通電する
ことを特徴とする。Specifically, it is a method for joining laminated steel plates, which are made by laminating two skin steel plates with a resin layer sandwiched between them, or by stacking these laminated steel plates and a regular steel plate and joining them by spot welding. The method is characterized in that, in a state where the area to be joined of the Nm plate is pressed by a cylindrical pressing member, the joining area surrounded by the cylindrical pressing member is pressurized by a welding electrode and energized. do.
かかる本発明の構成によれば、積層鋼板の接合部位の周
りを筒状の押圧部材で押圧しているので、溶接通電時、
この積層鋼板の樹脂層の膨張が、前記筒状の押圧部材で
抑えられ、表皮鋼板が凸状に外方へ膨らむことが無くな
る。According to the configuration of the present invention, since the cylindrical pressing member presses the periphery of the joint portion of the laminated steel plates, when welding current is applied,
Expansion of the resin layer of the laminated steel plate is suppressed by the cylindrical pressing member, and the skin steel plate is prevented from expanding outward in a convex shape.
次に、本発明の一実施例に係わる積層鋼板のスポット溶
接方法を、図面を参照しながら説明する。Next, a method for spot welding laminated steel plates according to an embodiment of the present invention will be described with reference to the drawings.
第１図は本実施例に係わる積層鋼板のスポット溶接方法
を示す積層鋼板の接合部位近傍の部分断面図である。FIG. 1 is a partial cross-sectional view of the vicinity of the joint portion of the laminated steel plates, showing the method of spot welding the laminated steel plates according to this embodiment.
第１図において、符号１は被溶接物の一方である積層鋼
板であり、二枚の表皮鋼板ＩＡ、ＩＣの間に、樹脂ＮＩ
Ｂを挟んで積層している。In Fig. 1, reference numeral 1 is a laminated steel plate which is one of the objects to be welded, and between two skin steel plates IA and IC, a resin NI
They are stacked with B in between.
符号２は、この積層鋼板１に接合する普通鋼板である。Reference numeral 2 indicates an ordinary steel plate to be joined to this laminated steel plate 1.
符号３．４は、一対の溶接電極であり、被溶接部材であ
る積Ｎ鋼板１及び普通鋼板２の両側に配置されている。Reference numeral 3.4 denotes a pair of welding electrodes, which are arranged on both sides of the N steel plate 1 and the ordinary steel plate 2, which are the members to be welded.
符号５．６は、これらの一対の溶接電極３．４の周りに
外装された円筒状の押圧部材であり、電気絶縁部材であ
るベークライト製である。Reference numeral 5.6 denotes a cylindrical pressing member that is sheathed around the pair of welding electrodes 3.4, and is made of Bakelite, which is an electrically insulating member.
この一対の溶接電極３．４、及び、押圧部材５．６は、
それぞれ、個別の加圧シリンダにより、独立に駆動され
る。This pair of welding electrodes 3.4 and pressing member 5.6 are
Each is independently driven by a separate pressurized cylinder.
次に、本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
積層鋼板１として、厚さ０．６ｍｍの表皮鋼板１、へ、
ＩＣの間に、厚さ０．０５ｍｍのポリオレフィンの樹脂
層ＩＢを挟み込んだものを用い、普通鋼板２として、厚
さ１．２鶴の軟鋼板を用いた。As the laminated steel plate 1, a skin steel plate 1 with a thickness of 0.6 mm,
A polyolefin resin layer IB having a thickness of 0.05 mm was sandwiched between the ICs, and a mild steel plate having a thickness of 1.2 mm was used as the ordinary steel plate 2.
前記積層鋼板１のポリオレフィンの樹脂ｉ１Ｂには、金
属粉を含有させて４電性を持たせている。The polyolefin resin i1B of the laminated steel plate 1 contains metal powder to give it tetraelectricity.
前記積層鋼板１と普通鋼板２とを重ね合わせて、溶接電
極３．４の加圧のタイミングに合わせて、押圧部材５．
６で接合部位周りを押圧して、前記溶接電極３．４に通
電する。The laminated steel plate 1 and the ordinary steel plate 2 are stacked on top of each other, and the pressing member 5.
6, the area to be joined is pressed and the welding electrode 3.4 is energized.
この積層鋼板１の樹脂層ＩＢは導電性を有しているので
、この樹脂層ＩＢに電流が流れ、この電流により樹脂層
ＩＢが発熱して溶融し、表面鋼板ＩＡが溶接電極３．４
の加圧力で押し潰されて、両表面鋼板ＩＡ、ＩＣが導通
する。Since the resin layer IB of this laminated steel plate 1 has conductivity, a current flows through this resin layer IB, and the resin layer IB generates heat and melts due to this current, and the surface steel plate IA is attached to the welding electrode 3.4.
The steel plates IA and IC on both surfaces become electrically connected.
この両表面鋼板ＩＡ、ＩＣの導通により、積層鋼板１と
普通調板２に規定の溶接電流が流れて、溶接が行われる
。Due to the conduction between the two surface steel plates IA and IC, a prescribed welding current flows through the laminated steel plate 1 and the normal adjustment plate 2, and welding is performed.
前記の方法で溶接を実施した結果、積層鋼板１の表面に
は、樹脂層ＩＢの体積膨張による膨らみの発生は認めら
れなかった。As a result of welding by the method described above, no bulge due to volumetric expansion of the resin layer IB was observed on the surface of the laminated steel plate 1.
この時の押圧部材５．６の加圧力は、単位面積当たりの
荷重を溶接電極３．４の加圧力と同じにして実施したが
、この加圧力は、単位面積当たりの荷重にして、溶接電
極３．４の加圧力の０，５倍〜３倍の範囲であれば、良
好な結果が得られる。At this time, the pressing force of the pressing member 5.6 was set to the same load per unit area as the pressing force of the welding electrode 3.4; Good results can be obtained within a range of 0.5 to 3 times the pressing force of 3.4.
この加圧力を、溶接電極３．４の加圧力の００５倍以下
にすると、加圧力が不足して、積層ｎ板１０表面鋼板Ｉ
Ａの膨らみを十分には抑えきれない。If this pressure is less than 005 times the pressure of the welding electrode 3.4, the pressure will be insufficient and the laminated n-plate 10 surface steel plate I
The bulge in A cannot be suppressed sufficiently.
また、３倍以上にすると、逆に、加圧力が過大となり、
この加圧力に負けて積ＦＪＥ板１の表面囲板ＩＡが凹ん
でしまう。In addition, if the pressure is increased three times or more, on the other hand, the pressurizing force will become excessive.
The surface plate IA of the FJE board 1 is dented by this pressing force.
前記押圧部材５．６の大きさとして゛は、内径は、必要
なナゲツト径とほぼおなしとし、外径は、樹脂層ＩＢの
体積膨張による影響範囲が最大でも前記ナゲツト径の１
．５倍までなので、前記ナゲツト径の１．５倍〜６倍程
度が好ましい。As for the size of the pressing member 5.6, the inner diameter is approximately the same as the required nugget diameter, and the outer diameter is approximately 1 of the nugget diameter even if the range of influence due to the volume expansion of the resin layer IB is maximum.
．． Since the diameter is up to 5 times, it is preferably about 1.5 to 6 times the nugget diameter.
この押圧部材５．６の形状としては、円形以外にも、六
角形、四角形等の多角形でも良い。The shape of this pressing member 5.6 may be polygonal, such as hexagonal or quadrangular, other than circular.
本実施例では、この押圧部材５．６をベークライト製と
したが、これに限定されず、耐熱性を有する他の樹脂製
、あるいは、他の絶縁材でも良い。In this embodiment, the pressing member 5.6 is made of Bakelite, but is not limited to this, and may be made of other heat-resistant resin or other insulating material.
また、本実施例では、導電性の樹脂層ＩＢで構成した積
層鋼板ｌを使用したが、電気絶縁性の樹脂層ＩＢを挟み
込んだ積層鋼板１でも良く、この場合、この積Ｊｕｌ板
１に予め加工を施して、両表皮鋼板ＩＡ、ＩＣ間の電気
的導通をとっておくか、あるいは、補助電極及び短絡ケ
ーブルを用いて、この補助電極及び短絡ケーブルで両表
皮鋼板ＩＡ、ＩＣ間を短絡して、この両表皮鋼板ＩＡ、
ＩＣ自身に流れる電流により、表皮鋼板ＩＡ、ＩＣ自身
に発熱させ、この発熱により樹脂層ＩＢを溶かして、両
表皮鋼板ＩＡ、ＩＣ間の導通をとるようにすれば良い。Further, in this embodiment, a laminated steel plate 1 composed of conductive resin layers IB was used, but a laminated steel plate 1 sandwiching an electrically insulating resin layer IB may also be used. Processing to maintain electrical continuity between both skin steel plates IA and IC, or use an auxiliary electrode and short-circuit cable to short-circuit both skin steel plates IA and IC. So, this double skin steel plate IA,
The skin steel plate IA and the IC themselves generate heat by the current flowing through the IC itself, and this heat generation melts the resin layer IB to establish electrical continuity between the skin steel plate IA and the IC.
以上、述べたように、かかる本発明によれば、積層鋼板
の接合部位周りを筒状の押圧部材で押圧した状態で、こ
の筒状の押圧部材で囲まれた積層鋼板の接合部位を溶接
電極で溶接するようにしたので、溶接待の積層鋼板の樹
脂層の体積膨張による表面鋼板の膨らみを抑制して、被
溶接部材である積層鋼板の表面品質を確保できると云う
優れた効果を奏する。As described above, according to the present invention, while the cylindrical pressing member presses the periphery of the laminated steel plate to be joined, the welding electrode Since the welding is carried out in this manner, the bulge of the surface steel plate due to the volume expansion of the resin layer of the laminated steel plate waiting to be welded can be suppressed, and the surface quality of the laminated steel plate, which is the member to be welded, can be ensured, which is an excellent effect.
第１図は一実施例に係わる積層鋼板のスポット溶接方法
を示す積層鋼板の接合部位周りの断面図、第２図は従来
のスポット溶接方法で溶接した場合の積層鋼板の接合部
位周りの平面図、第３図は第２図の積層鋼板の接合部位
周りのｍ−ｍ断面図である。
■ ・・・・積層鋼板
ＩＡ、ＩＣ・・・・表皮鋼板
１Ｂ・・・・樹脂層
３．４ ・・・・溶接電極
５．６ ・・・・押圧部材Fig. 1 is a cross-sectional view of the area around the joint of a laminated steel plate showing a spot welding method for laminated steel plates according to an embodiment, and Fig. 2 is a plan view of the area around the joint of a laminated steel plate when welding is performed using a conventional spot welding method. , FIG. 3 is a sectional view taken along the line mm around the joint portion of the laminated steel plate shown in FIG. 2. ■ ... Laminated steel plate IA, IC ... Skin steel plate 1B ... Resin layer 3.4 ... Welding electrode 5.6 ... Pressing member
Claims (1)
鋼板どうし、又は該積層鋼板と普通鋼板とを重ね合わせ
てスポット溶接により接合する積層鋼板のスポット溶接
方法であって、前記積層鋼板の接合部位の周りを筒状の
押圧部材で押圧した状態で、該筒状の押圧部材で囲まれ
た接合部位を溶接電極で加圧して、通電することを特徴
とする積層鋼板のスポット溶接方法A method for spot welding laminated steel plates, in which two skin steel plates are laminated with a resin layer sandwiched between them, or a laminated steel plate and a normal steel plate are overlapped and joined by spot welding, the laminated steel plates being joined by spot welding. Spot welding of laminated steel plates, characterized in that the joint area of the steel plates is pressed by a cylindrical pressing member, and the joining area surrounded by the cylindrical pressing member is pressurized with a welding electrode and energized. Method
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21308786A JPS6368279A (en) | 1986-09-10 | 1986-09-10 | Spot welding method for laminated steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21308786A JPS6368279A (en) | 1986-09-10 | 1986-09-10 | Spot welding method for laminated steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6368279A true JPS6368279A (en) | 1988-03-28 |
Family
ID=16633339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21308786A Pending JPS6368279A (en) | 1986-09-10 | 1986-09-10 | Spot welding method for laminated steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6368279A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010129450A (en) * | 2008-11-28 | 2010-06-10 | Toyota Motor Corp | Battery and manufacturing method of battery |
| WO2010140605A1 (en) * | 2009-06-05 | 2010-12-09 | 本田技研工業株式会社 | Resistance welding method and device therefore |
| WO2012033040A1 (en) * | 2010-09-06 | 2012-03-15 | 本田技研工業株式会社 | Welding method and welding device |
| WO2012043587A1 (en) * | 2010-09-30 | 2012-04-05 | 本田技研工業株式会社 | Welding device |
| JP2012076125A (en) * | 2010-10-01 | 2012-04-19 | Honda Motor Co Ltd | Spot welding device |
| JP2012076099A (en) * | 2010-09-30 | 2012-04-19 | Honda Motor Co Ltd | Spot welding device |
| CN106061665A (en) * | 2014-03-14 | 2016-10-26 | 新日铁住金株式会社 | Welded structure and method for manufacturing welded structure |
| JP2016533265A (en) * | 2013-09-26 | 2016-10-27 | アイソレールマテリアレンインダストリー プル ビー．ヴィ． | Method for producing a layered panel |
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1986
- 1986-09-10 JP JP21308786A patent/JPS6368279A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010129450A (en) * | 2008-11-28 | 2010-06-10 | Toyota Motor Corp | Battery and manufacturing method of battery |
| WO2010140605A1 (en) * | 2009-06-05 | 2010-12-09 | 本田技研工業株式会社 | Resistance welding method and device therefore |
| JP2011011259A (en) * | 2009-06-05 | 2011-01-20 | Honda Motor Co Ltd | Resistance welding method and equipment therefor |
| WO2012033040A1 (en) * | 2010-09-06 | 2012-03-15 | 本田技研工業株式会社 | Welding method and welding device |
| JP2012076099A (en) * | 2010-09-30 | 2012-04-19 | Honda Motor Co Ltd | Spot welding device |
| WO2012043587A1 (en) * | 2010-09-30 | 2012-04-05 | 本田技研工業株式会社 | Welding device |
| CN103153519A (en) * | 2010-09-30 | 2013-06-12 | 本田技研工业株式会社 | Welding device |
| CN103153519B (en) * | 2010-09-30 | 2016-03-16 | 本田技研工业株式会社 | Welding equipment |
| JP2012076125A (en) * | 2010-10-01 | 2012-04-19 | Honda Motor Co Ltd | Spot welding device |
| JP2016533265A (en) * | 2013-09-26 | 2016-10-27 | アイソレールマテリアレンインダストリー プル ビー．ヴィ． | Method for producing a layered panel |
| CN106061665A (en) * | 2014-03-14 | 2016-10-26 | 新日铁住金株式会社 | Welded structure and method for manufacturing welded structure |
| JPWO2015137512A1 (en) * | 2014-03-14 | 2017-04-06 | 新日鐵住金株式会社 | Welded structure and manufacturing method of welded structure |
| CN106061665B (en) * | 2014-03-14 | 2019-07-05 | 日本制铁株式会社 | The manufacturing method of welded structure and welded structure |
| US11890694B2 (en) | 2014-03-14 | 2024-02-06 | Nippon Steel Corporation | Resistance spot welding apparatus and method for manufacturing a welded structure |
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