JP2009291824A - Resistance welding method and welded structure - Google Patents

Resistance welding method and welded structure Download PDF

Info

Publication number
JP2009291824A
JP2009291824A JP2008149339A JP2008149339A JP2009291824A JP 2009291824 A JP2009291824 A JP 2009291824A JP 2008149339 A JP2008149339 A JP 2008149339A JP 2008149339 A JP2008149339 A JP 2008149339A JP 2009291824 A JP2009291824 A JP 2009291824A
Authority
JP
Japan
Prior art keywords
plate material
thin plate
electrode
thick
resistance welding
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.)
Granted
Application number
JP2008149339A
Other languages
Japanese (ja)
Other versions
JP5117286B2 (en
Inventor
Akira Goto
彰 後藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2008149339A priority Critical patent/JP5117286B2/en
Publication of JP2009291824A publication Critical patent/JP2009291824A/en
Application granted granted Critical
Publication of JP5117286B2 publication Critical patent/JP5117286B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Resistance Welding (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resistance welding method that can ensure resistance welding between a metal plate and a thin metal plate, and to provide a welded structure. <P>SOLUTION: In the resistance welding method and the welded structure, on superimposed thick metal plates 12, 14, a thin metal plate 16 thinner than the thick metal plates is placed and welded with a pair of electrodes 24, 30. The thin metal plate 16 has been hemmed. With the electrode 24 abut on a folded part 20 of the thin metal plate 16, and with the electrode 30 abut on the lower face 28 of the thick metal plate 14, the thick metal plates 12, 14 and the thin metal plate 16 are resistance-welded with the electrodes 24, 30. By energizing from the folded part 20 to the thin metal plate 16 through a contact part 18, the thick metal plate 14 and the thin metal plate 16 are surely resistance-welded and the welded structure is also obtained in which the thick metal plate 14 and the thin metal plate 16 are surely resistance-welded. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、重ね合わせた２枚以上の板材と薄板材とを抵抗溶接する方法及びその溶接構造体に関し、一層詳細には、２枚以上の板材とヘミング加工されている薄板材とを抵抗溶接するための抵抗溶接方法及び溶接構造体に関する。   The present invention relates to a method of resistance welding two or more stacked plate materials and a thin plate material, and a welded structure thereof, and more specifically, resistance welding of two or more plate materials and a thin plate material that has been hemmed. The present invention relates to a resistance welding method and a welded structure.

従来から、重ね合わせた金属板を棒状の電極で挟み、強く加圧しながら短時間で大電流を通電し、前記金属板間の接触面で溶融凝固させてナゲットを形成させることにより溶接する抵抗溶接が知られている。   Conventionally, resistance welding where welding is performed by sandwiching stacked metal plates with rod-shaped electrodes, energizing a large current in a short time while pressing strongly, and melting and solidifying at the contact surface between the metal plates to form a nugget It has been known.

特許文献１には、厚板材１００上に厚板材１０２が載置され、さらに厚板材１０２上に、厚板材１００、１０２よりも板厚が薄い薄板材１０４が載置されたワーク１０６の抵抗溶接についての記載がある（図４Ａ参照）。この特許文献１に開示されている方法では、ワーク１０６を電極１０８、１１０で圧接しながら電極１０８、１１０間で図示しない電源から電流を通電すると、厚板材１００と厚板材１０２との接触面を中心としてナゲットが生成され、このナゲットが成長することにより、厚板材１００、１０２、薄板材１０４が溶接される。   In Patent Document 1, resistance welding of a workpiece 106 in which a thick plate material 102 is placed on a thick plate material 100 and a thin plate material 104 having a thickness smaller than that of the thick plate materials 100 and 102 is placed on the thick plate material 102. Is described (see FIG. 4A). In the method disclosed in Patent Document 1, when a current is supplied from a power source (not shown) between the electrodes 108 and 110 while the workpiece 106 is pressed by the electrodes 108 and 110, the contact surface between the thick plate material 100 and the thick plate material 102 is formed. A nugget is generated as the center, and the thick plate materials 100 and 102 and the thin plate material 104 are welded by growing the nugget.

また、特許文献２には、薄板材１１２、１１４間に樹脂材１１６が介装された複合部材１１８が、厚板材１２０上に載置されたワーク１２２に抵抗溶接される技術的思想が開示されている（図４Ｂ参照）。該特許文献２に開示されている方法では、薄板材１１４上に、厚板材１２０と同じ板厚の当て板１２４を載置し、電極１２６を前記当て板１２４に当接し、電極１２８を厚板材１２０の下面に当接して、電極１２６、１２８間で通電することにより、厚板材１２０、薄板材１１２、１１４が溶接される。   Patent Document 2 discloses a technical idea in which a composite member 118 in which a resin material 116 is interposed between thin plate materials 112 and 114 is resistance-welded to a work 122 placed on a thick plate material 120. (See FIG. 4B). In the method disclosed in Patent Document 2, a plate 124 having the same thickness as that of the thick plate 120 is placed on the thin plate 114, the electrode 126 is brought into contact with the plate 124, and the electrode 128 is made thick. The thick plate member 120 and the thin plate members 112 and 114 are welded by contacting the lower surface of the electrode 120 and energizing between the electrodes 126 and 128.

特開２００３−２５１４６８号公報JP 2003-251468 A 特開平６−２４６４６２号公報JP-A-6-246462

特許文献１の溶接に通常使われる電極１０８の先端部は、内部を循環する冷却水により冷却されており、電極１０８の先端部から厚板材１００と厚板材１０２との接触面までの距離に比べると、電極１０８の先端部から厚板材１０２と薄板材１０４との接触面までの距離の方がより短いためにナゲットの成長が妨げられ、厚板材１０２と薄板材１０４との溶接が不十分になる場合がある。また、電極１０８で薄板材１０４を圧接した場合には、厚板材１０２と薄板材１０４との間には隙間がほとんど形成されないために、電極１０８から電極１１０に流れる電流が厚板材１０２と薄板材１０４との接触面を通過する場合に、電流が拡散して、電流密度が低下し、ジュール熱の発生が抑えられ、厚板材１０２と薄板材１０４との溶接が不十分になる場合がある。さらに、特許文献１では、電流密度を徐々に小さくしてナゲットの成長を均一にするために電極１０８の先端部と薄板材１０４との接触面積よりも、電極１１０の先端部と厚板材１００との接触面積を大きくしている。このため、厚板材１００、１０２、薄板材１０４の板厚との関係で先端径が異なる複数の電極１０８、１１０を用意する必要が生じる。   The tip portion of the electrode 108 normally used for welding in Patent Document 1 is cooled by cooling water circulating inside, and is compared with the distance from the tip portion of the electrode 108 to the contact surface between the thick plate member 100 and the thick plate member 102. In addition, the distance from the tip of the electrode 108 to the contact surface between the thick plate material 102 and the thin plate material 104 is shorter, which hinders the growth of the nugget, and the welding between the thick plate material 102 and the thin plate material 104 is insufficient. There is a case. In addition, when the thin plate member 104 is press-contacted with the electrode 108, a gap is hardly formed between the thick plate member 102 and the thin plate member 104, so that the current flowing from the electrode 108 to the electrode 110 causes the thick plate member 102 and the thin plate member 104 to flow. When passing through the contact surface with 104, the current is diffused, the current density is lowered, the generation of Joule heat is suppressed, and welding between the thick plate material 102 and the thin plate material 104 may be insufficient. Further, in Patent Document 1, in order to gradually reduce the current density and make the nugget growth uniform, the tip portion of the electrode 110 and the thick plate material 100 are compared to the contact area between the tip portion of the electrode 108 and the thin plate material 104. The contact area is increased. For this reason, it is necessary to prepare a plurality of electrodes 108 and 110 having different tip diameters in relation to the plate thicknesses of the thick plate materials 100 and 102 and the thin plate material 104.

また、特許文献２の溶接方法では、当て板１２４を用いてワーク１２２の溶接をしているが、樹脂材１１６を中心として板厚に関して上下対称にして、圧力を均一にするために、厚板材１２０と当て板１２４との板厚を同じくする必要があり、厚板材１２０の板厚に応じてその都度当て板１２４を用意しなければならず、工程上煩雑となる。   In the welding method of Patent Document 2, the workpiece 122 is welded using the contact plate 124. However, in order to make the pressure uniform with respect to the plate thickness around the resin material 116, the thick plate material is used. It is necessary to make the plate thickness of 120 and the contact plate 124 the same, and the contact plate 124 must be prepared each time according to the plate thickness of the thick plate material 120, which makes the process complicated.

本発明は、上記の課題を考慮してなされたものであって、重ね合わせた２枚以上の板材と薄板材間の抵抗溶接を可及的に確実に行うための抵抗溶接方法及び溶接構造体を提供することを目的とする。   The present invention has been made in consideration of the above-described problems, and a resistance welding method and a welded structure for performing resistance welding between two or more stacked plate materials and thin plate materials as reliably as possible. The purpose is to provide.

本発明の抵抗溶接方法は、重ね合わせた２枚以上の板材上に、前記各板材よりも板厚が小さい薄板材を載置し、一対の電極で抵抗溶接する抵抗溶接方法において、前記薄板材は、折り返し部を有するようにヘミング加工されており、一方の電極を前記薄板材の折り返し部に当接し、他方の電極を前記２枚以上の板材の最下部の板材の下面に当接し、前記一方と他方の電極で、前記２枚以上の板材、前記薄板材を抵抗溶接することを特徴とする。   The resistance welding method of the present invention is the resistance welding method in which a thin plate material having a plate thickness smaller than each of the plate materials is placed on two or more stacked plate materials, and resistance welding is performed with a pair of electrodes. Is hemmed to have a folded portion, one electrode is in contact with the folded portion of the thin plate material, the other electrode is in contact with the lower surface of the lowermost plate material of the two or more plate materials, The two or more sheets and the thin sheet are resistance-welded with one and the other electrodes.

また、他の本発明の溶接構造体は、重ね合わせた２枚以上の板材と、前記各板材よりも板厚が小さい薄板材とを備え、前記板材上に載置された前記薄板材と、前記２枚以上の板材とが抵抗溶接された溶接構造体において、前記薄板材は、ヘミング加工されており、前記薄板材のヘミング加工された折り返し部と前記板材との接触面で抵抗溶接部が形成されていることを特徴とする。   Further, another welded structure of the present invention includes two or more stacked plate materials, and a thin plate material having a plate thickness smaller than each of the plate materials, and the thin plate material placed on the plate material, In the welded structure in which the two or more plate members are resistance welded, the thin plate member is hemmed, and the resistance welded portion is a contact surface between the hemmed folded portion of the thin plate member and the plate member. It is formed.

本発明の抵抗溶接方法及び溶接構造体では、２枚以上の重ね合わせた板材と電極との間にヘミング加工した薄板材を介在させて、板材と電極との間隔を薄板材の板厚によって拡大して、薄板材と板材との接触面に対する電極による冷却効果を緩和することにより、ナゲットの成長を前記接触面で妨げずに継続させ、薄板材と板材との抵抗溶接を確実にすることができる。   In the resistance welding method and welded structure according to the present invention, a hemmed thin plate material is interposed between two or more stacked plate materials and electrodes, and the distance between the plate material and the electrode is increased by the thickness of the thin plate material. By relaxing the cooling effect of the electrode on the contact surface between the thin plate material and the plate material, the nugget growth can be continued without hindering the contact surface, and resistance welding between the thin plate material and the plate material can be ensured. it can.

以下、本発明の実施形態について添付の図面を参照しながら詳細に説明する。図１Ａ〜図１Ｅは、溶接構造体１０の抵抗溶接工程の説明図であり、図２Ａは、溶接構造体１０の概略斜視図であり、図２Ｂは、図２ＡのＩＩＢ−ＩＩＢ線に沿う断面図である。   Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1A to 1E are explanatory views of a resistance welding process of the welded structure 10, FIG. 2A is a schematic perspective view of the welded structure 10, and FIG. 2B is a cross section taken along line IIB-IIB in FIG. 2A. FIG.

本実施形態によれば、溶接構造体１０の抵抗溶接は、まず、重ね合わせた厚板材１２、１４上に薄板材１６を載置する（図１Ａ参照）。厚板材１２、１４の材質は、特に限定されるものではないが、例えば、高張力鋼が好ましい。薄板材１６には一端を折り返すヘミング加工が施され、厚板材１４と接触する薄板材１６の接触部１８の上面と、折り返し部２０の下面とが接するように折り曲げ部２２を形成しておく。ヘミング加工された全体としての薄板材１６の板厚は、厚板材１２、１４の板厚よりも薄く、好ましくは厚板材１２、１４の板厚の半分程度である。また、薄板材１６の材質は、特に限定されるものではないが、例えば、軟鋼が好ましい。   According to this embodiment, the resistance welding of the welded structure 10 first places the thin plate material 16 on the stacked thick plate materials 12 and 14 (see FIG. 1A). The material of the thick plates 12 and 14 is not particularly limited, but for example, high-tensile steel is preferable. The thin plate material 16 is hemmed so that one end is folded, and a bent portion 22 is formed so that the upper surface of the contact portion 18 of the thin plate material 16 contacting the thick plate material 14 and the lower surface of the folded portion 20 are in contact with each other. The plate thickness of the thin plate material 16 as a whole that has been hemmed is thinner than the plate thickness of the thick plate materials 12 and 14, and preferably about half the plate thickness of the thick plate materials 12 and 14. Moreover, the material of the thin plate material 16 is not particularly limited, but for example, mild steel is preferable.

次に、薄板材１６の折り返し部２０上に電極２４の先端部２６を当接させ、薄板材１６が載置されていない側の面である厚板材１２の下面２８に電極（他方の電極）３０の先端部３２を当接させる（図１Ｂ参照）。次いで、電極２４と３０とを互いに接近する方向に押圧させるとともに、図示しない電源から電極２４、３０に電流を供給し、薄板材１６、厚板材１４、１２の順に電極２４から電極３０の方向に電流を通電させる。   Next, the tip portion 26 of the electrode 24 is brought into contact with the folded portion 20 of the thin plate material 16, and an electrode (the other electrode) is formed on the lower surface 28 of the thick plate material 12, which is the surface on which the thin plate material 16 is not placed. The tip part 32 of 30 is brought into contact (see FIG. 1B). Next, the electrodes 24 and 30 are pressed in directions approaching each other, and a current is supplied from a power source (not shown) to the electrodes 24 and 30, so that the thin plate material 16 and the thick plate materials 14 and 12 are arranged in the direction from the electrode 24 to the electrode 30. Energize the current.

電極２４の内部には冷却水が循環しているために、この冷却水による冷却効果は電極２４の先端部２６を通じて薄板材１６に伝わり、先端部２６からの距離が近い接触面ほど、その温度が低下する。従って、厚板材１２と厚板材１４との接触面３４の温度は、厚板材１４と薄板材１６との接触面３６の温度よりも高いので、接触面３４の近傍からナゲット３８の生成が始まる（図１Ｃ参照）。さらに、電極２４、３０による押圧、電流の通電を続けると、ナゲット３８が接触面３６まで成長する（図１Ｄ参照）。   Since cooling water circulates inside the electrode 24, the cooling effect of this cooling water is transmitted to the thin plate material 16 through the tip portion 26 of the electrode 24, and the temperature of the contact surface that is closer to the tip portion 26 has a higher temperature. Decreases. Accordingly, since the temperature of the contact surface 34 between the thick plate material 12 and the thick plate material 14 is higher than the temperature of the contact surface 36 between the thick plate material 14 and the thin plate material 16, generation of the nugget 38 starts from the vicinity of the contact surface 34 ( (See FIG. 1C). Further, when the pressing by the electrodes 24 and 30 and the current supply are continued, the nugget 38 grows up to the contact surface 36 (see FIG. 1D).

電極２４、３０による押圧、電流の通電を所定時間続けると、ナゲット３８が接触面３６を超えて薄板材１６内まで成長することにより厚板材１２、１４、薄板材１６が一体化されて抵抗溶接が完了する（図１Ｅ参照）。そこで、折り返し部２０から電極２４を離間させ、厚板材１２の下面２８から電極３０を離間させることにより溶接構造体１０が得られる（図２Ａ参照）。   When pressing by the electrodes 24 and 30 and energization of the current are continued for a predetermined time, the nugget 38 grows into the thin plate material 16 beyond the contact surface 36, whereby the thick plate materials 12 and 14 and the thin plate material 16 are integrated and resistance welding is performed. Is completed (see FIG. 1E). Therefore, the welding structure 10 is obtained by separating the electrode 24 from the folded portion 20 and separating the electrode 30 from the lower surface 28 of the thick plate 12 (see FIG. 2A).

前記のように溶接構造体１０の抵抗溶接工程では、厚板材１４と電極２４との間にヘミング加工した薄板材１６を介在させて、電極２４の先端部２６を当接させ、厚板材１４と電極２４との間を所定距離離間させることにより接触面３６に対する電極２４内を循環する冷却水による冷却効果が緩和される。その結果、接触面３４の近傍から形成が始まったナゲット３８の成長を接触面３６で妨げずに継続させることが可能となり、厚板材１４と薄板材１６との抵抗溶接を確実にすることができる（図２Ｂ参照）。   As described above, in the resistance welding process of the welded structure 10, the thin plate material 16 that is hemmed is interposed between the thick plate material 14 and the electrode 24, and the tip portion 26 of the electrode 24 is brought into contact with the thick plate material 14. By separating the electrode 24 from the electrode 24 by a predetermined distance, the cooling effect by the cooling water circulating in the electrode 24 with respect to the contact surface 36 is reduced. As a result, it is possible to continue the growth of the nugget 38 which has started to be formed in the vicinity of the contact surface 34 without being hindered by the contact surface 36, and to ensure resistance welding between the thick plate material 14 and the thin plate material 16. (See FIG. 2B).

また、本発明の実施形態の変形例として、図３Ａ、図３Ｂに示すように、ヘミング加工が施された薄板材１６ａ、１６ｂを厚板材１４上に載置し、抵抗溶接してもよい。すなわち、図３Ａに示す薄板材１６ａは、厚板材１４と接触する薄板材１６ａの接触部１８ａの上面と、折り返し部２０ａの下面とが接するように折り曲げ部２２ａを形成し、さらに、折り返し部２０ａの端部４０が厚板材１４に接するようにしてもよい。また、図３Ｂに示す薄板材１６ｂは、厚板材１４と接触する薄板材１６ｂの接触部１８ｂの上面と、折り返し部２０ｂの下面とが接するように折り曲げ部２２ｂを形成し、さらに折り返し部２０ｂの上面と折り返し部４２の下面とが接するように折り曲げ部４４を形成し、さらにまた、折り返し部４２の端部４６を厚板材１４に接触させる。厚板材１２、１４、薄板材１６の材質、板厚との関係で、厚板材１４と薄板材１６とを抵抗溶接を確実にするために、薄板材１６ａ、１６ｂのように好適なヘミング加工を選択することができる。   As a modification of the embodiment of the present invention, as shown in FIGS. 3A and 3B, the thin plate materials 16a and 16b subjected to hemming may be placed on the thick plate material 14 and resistance welding may be performed. That is, the thin plate material 16a shown in FIG. 3A forms a bent portion 22a so that the upper surface of the contact portion 18a of the thin plate material 16a that contacts the thick plate material 14 and the lower surface of the folded portion 20a are in contact with each other, and further, the folded portion 20a. The end 40 may be in contact with the thick plate material 14. Moreover, the thin plate material 16b shown in FIG. 3B forms a bent portion 22b so that the upper surface of the contact portion 18b of the thin plate material 16b that contacts the thick plate material 14 and the lower surface of the folded portion 20b are in contact with each other. The bent portion 44 is formed so that the upper surface and the lower surface of the folded portion 42 are in contact with each other, and the end portion 46 of the folded portion 42 is brought into contact with the thick plate material 14. In order to ensure resistance welding between the thick plate material 14 and the thin plate material 16 in relation to the material and the plate thickness of the thick plate materials 12 and 14 and the thin plate material 16, suitable hemming processing is performed as in the thin plate materials 16a and 16b. You can choose.

なお、上記実施形態では、厚板材１２、１４と２枚の厚板材を重ね合わせていたが、枚数は特に限定されるものではなく、３枚以上の厚板材を重ね合わせてもよい。かかる場合には、最下部の厚板材に電極３０を当接することとなる。   In the above embodiment, the thick plate members 12 and 14 and the two thick plate members are overlapped, but the number of the plate members is not particularly limited, and three or more thick plate members may be overlapped. In such a case, the electrode 30 is brought into contact with the lowermost thick plate material.

また、本発明は、上述の実施形態に限らず、本発明の要旨を逸脱することなく、種々の構成を採り得ることはもちろんである。   In addition, the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted without departing from the gist of the present invention.

図１Ａ〜図１Ｅは、本発明の実施形態の溶接構造体の抵抗溶接工程の説明図である。1A to 1E are explanatory diagrams of a resistance welding process of a welded structure according to an embodiment of the present invention. 図２Ａは、本発明の実施形態の溶接構造体の概略斜視図であり、図２Ｂは、図２ＡのＩＩＢ−ＩＩＢ線に沿う断面図である。2A is a schematic perspective view of a welded structure according to an embodiment of the present invention, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB in FIG. 2A. 図３Ａ、図３Ｂは、本発明の実施形態の溶接構造体の変形例の断面図である。3A and 3B are cross-sectional views of modifications of the welded structure according to the embodiment of the present invention. 図４Ａ、図４Ｂは、従来の溶接構造体の抵抗溶接の説明図である。4A and 4B are explanatory diagrams of resistance welding of a conventional welded structure.

符号の説明Explanation of symbols

１０…溶接構造体
１２、１４、１００、１０２、１２０…厚板材
１６、１６ａ、１６ｂ、１０４、１１２、１１４…薄板材
１８、１８ａ、１８ｂ…接触部
２０、２０ａ、２０ｂ、４２…折り返し部
２２、２２ａ、２２ｂ、４４…折り曲げ部
２４、３０、１０８、１１０、１２６、１２８…電極
２６、３２…先端部 ２８…下面
３４、３６…接触面 ３８…ナゲット
４０、４６…端部 １０６、１２２…ワーク
１１６…樹脂材 １１８…複合部材
１２４…当て板 DESCRIPTION OF SYMBOLS 10 ... Welded structure 12, 14, 100, 102, 120 ... Thick board material 16, 16a, 16b, 104, 112, 114 ... Thin board material 18, 18a, 18b ... Contact part 20, 20a, 20b, 42 ... Folded part 22 22a, 22b, 44 ... bent portions 24, 30, 108, 110, 126, 128 ... electrodes 26, 32 ... tip 28 ... bottom surface 34, 36 ... contact surface 38 ... nugget 40, 46 ... end 106, 122 ... Workpiece 116 ... resin material 118 ... composite member 124 ... caulking plate

Claims (2)

重ね合わせた２枚以上の板材上に、前記各板材よりも板厚が小さい薄板材を載置し、一対の電極で抵抗溶接する抵抗溶接方法において、
前記薄板材は、折り返し部を有するようにヘミング加工されており、
一方の電極を前記薄板材の折り返し部に当接し、他方の電極を前記２枚以上の板材の最下部の板材の下面に当接し、
前記一方と他方の電極で、前記２枚以上の板材、前記薄板材を抵抗溶接する
ことを特徴とする抵抗溶接方法。 In a resistance welding method of placing a thin plate material having a plate thickness smaller than each of the plate materials on two or more stacked plate materials, and resistance welding with a pair of electrodes,
The thin plate material is hemmed so as to have a folded portion,
One electrode is in contact with the folded portion of the thin plate material, and the other electrode is in contact with the lower surface of the lowermost plate material of the two or more plate materials,
The resistance welding method, wherein the two or more plate members and the thin plate member are resistance-welded with the one and the other electrodes. 重ね合わせた２枚以上の板材と、前記各板材よりも板厚が小さい薄板材とを備え、前記板材上に載置された前記薄板材と、前記２枚以上の板材とが抵抗溶接された溶接構造体において、
前記薄板材は、ヘミング加工されており、前記薄板材のヘミング加工された折り返し部と前記板材との接触面で抵抗溶接部が形成されている
ことを特徴とする溶接構造体。 Two or more stacked plate materials and a thin plate material having a plate thickness smaller than each of the plate materials, and the thin plate material placed on the plate material and the two or more plate materials were resistance-welded. In the welded structure,
The thin plate material is hemmed, and a resistance welded portion is formed at a contact surface between the hemmed folded portion of the thin plate material and the plate material.
JP2008149339A 2008-06-06 2008-06-06 Resistance welding method and welded structure Expired - Fee Related JP5117286B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008149339A JP5117286B2 (en) 2008-06-06 2008-06-06 Resistance welding method and welded structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008149339A JP5117286B2 (en) 2008-06-06 2008-06-06 Resistance welding method and welded structure

Publications (2)

Publication Number Publication Date
JP2009291824A true JP2009291824A (en) 2009-12-17
JP5117286B2 JP5117286B2 (en) 2013-01-16

Family

ID=41540494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008149339A Expired - Fee Related JP5117286B2 (en) 2008-06-06 2008-06-06 Resistance welding method and welded structure

Country Status (1)

Country Link
JP (1) JP5117286B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011011238A (en) * 2009-07-02 2011-01-20 Nisshin Steel Co Ltd Lap-welding method of steel strip
GB2520133A (en) * 2013-09-05 2015-05-13 Gm Global Tech Operations Inc Welding device for welding a connecting section and method for welding the connecting section with the welding device
WO2016103376A1 (en) * 2014-12-25 2016-06-30 本田技研工業株式会社 Different material joining structure and different material joining method
JP7173736B2 (en) 2018-02-28 2022-11-16 ダイハツ工業株式会社 Spot welding method and steel plate parts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61249684A (en) * 1985-04-30 1986-11-06 Mazda Motor Corp Joining method for laminated plate
JPH06246462A (en) * 1993-02-26 1994-09-06 Kawasaki Steel Corp Lap spot welding method to composite steel plate
JPH09220673A (en) * 1996-02-14 1997-08-26 Mitsubishi Motors Corp Metal sheet weld joining structure and metal sheet weld joining method
JPH10249537A (en) * 1997-03-13 1998-09-22 Honda Motor Co Ltd Resistance welding method
JP2003251468A (en) * 2002-03-05 2003-09-09 Honda Motor Co Ltd Spot welding method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61249684A (en) * 1985-04-30 1986-11-06 Mazda Motor Corp Joining method for laminated plate
JPH06246462A (en) * 1993-02-26 1994-09-06 Kawasaki Steel Corp Lap spot welding method to composite steel plate
JPH09220673A (en) * 1996-02-14 1997-08-26 Mitsubishi Motors Corp Metal sheet weld joining structure and metal sheet weld joining method
JPH10249537A (en) * 1997-03-13 1998-09-22 Honda Motor Co Ltd Resistance welding method
JP2003251468A (en) * 2002-03-05 2003-09-09 Honda Motor Co Ltd Spot welding method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011011238A (en) * 2009-07-02 2011-01-20 Nisshin Steel Co Ltd Lap-welding method of steel strip
GB2520133A (en) * 2013-09-05 2015-05-13 Gm Global Tech Operations Inc Welding device for welding a connecting section and method for welding the connecting section with the welding device
GB2520133B (en) * 2013-09-05 2017-02-22 Gm Global Tech Operations Llc Welding device for welding a connecting section and method for welding the connecting section with the welding device
WO2016103376A1 (en) * 2014-12-25 2016-06-30 本田技研工業株式会社 Different material joining structure and different material joining method
CN107107247A (en) * 2014-12-25 2017-08-29 本田技研工业株式会社 Foreign material joint construction and method for joining members of different kinds
US10220885B2 (en) 2014-12-25 2019-03-05 Honda Motor Co., Ltd. Different material joining structure and different material joining method
JP7173736B2 (en) 2018-02-28 2022-11-16 ダイハツ工業株式会社 Spot welding method and steel plate parts

Also Published As

Publication number Publication date
JP5117286B2 (en) 2013-01-16

Similar Documents

Publication Publication Date Title
JP4494496B2 (en) Resistance welding method and welded structure
JP4836173B2 (en) Series spot welding equipment or indirect spot welding equipment
JP5982652B2 (en) Dissimilar metal joint
KR101562484B1 (en) Indirect spot welding method
US20130327745A1 (en) Resistance spot welding manufacture and method of forming same
JP5117286B2 (en) Resistance welding method and welded structure
JP2010167423A (en) Laser beam welding method
JP2009241112A (en) Resistance spot welding method
JP6963282B2 (en) Aluminum material resistance spot welding joints and aluminum material resistance spot welding method
JP2012091203A (en) Indirect spot welding method
JP2011050977A (en) Indirect spot welding method
JP6382593B2 (en) Welding method
JP2007307591A (en) Method for manufacturing building member
JP2003236673A (en) Method for joining different kinds of materials
JP2015043308A (en) Bus bar and process of manufacturing the same
JP5191117B2 (en) Laser welding method
JP2020078811A (en) Electrode for resistance spot welding, and method of manufacturing resistance spot-welded joint
KR20150085769A (en) Welding method of butt joint
JP2005199287A (en) Weld bead structure and welding method
JP5253777B2 (en) Overlapping laser welding method and laser welded product
JP2006116600A (en) Method for joining different materials
WO2019244605A1 (en) Method for joining plated steel sheet and joint structure
JP2012252935A (en) Semiconductor device for electricity
JP4513709B2 (en) Hot rolling method for difficult-to-process steel slabs
JP2009202226A (en) Welding structure of low-output laser beam

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20101126

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120913

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121002

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121017

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151026

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees