JP2000246445A - Welding method for plated steel sheet - Google Patents
Welding method for plated steel sheetInfo
- Publication number
- JP2000246445A JP2000246445A JP11058041A JP5804199A JP2000246445A JP 2000246445 A JP2000246445 A JP 2000246445A JP 11058041 A JP11058041 A JP 11058041A JP 5804199 A JP5804199 A JP 5804199A JP 2000246445 A JP2000246445 A JP 2000246445A
- Authority
- JP
- Japan
- Prior art keywords
- plated steel
- welding
- steel sheet
- groove
- overlapped
- 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
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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Landscapes
- Arc Welding In General (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、めっき鋼板の溶接
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding a plated steel sheet.
【０００２】[0002]
【従来の技術】従来より、鋼板の重ね合せ溶接において
は、スポット溶接、プロジェクション溶接、シーム溶接
等の接触溶接によるものと、レーザ溶接、プラズマアー
ク溶接、電子ビーム溶接等の非接触溶接によるものとが
ある。両者の違いは、前者が電気抵抗によりジュール熱
を発生させた接合箇所を加圧して溶接を行うものである
のに対し、後者は周囲を加圧した接合箇所に、熱源とし
て溶接レーザ光や電子束を照射して溶接を行うものであ
るところにある。2. Description of the Related Art Conventionally, lap welding of steel sheets includes contact welding such as spot welding, projection welding, and seam welding, and non-contact welding such as laser welding, plasma arc welding, and electron beam welding. There is. The difference between the two is that the former presses the joint where the Joule heat is generated by electric resistance and performs welding, while the latter applies the welding laser beam or electron The welding is performed by irradiating the bundle.
【０００３】つまり、接触溶接によるものでは接合箇所
自体を加圧する一方で、非接触溶接によるものでは接合
箇所の周囲（線状に溶接する場合はその両側）を加圧す
るため、接触溶接においては、接合箇所の周囲は加圧さ
れることなく開放されているのに対し、非接触溶接にお
いては、接合箇所の周囲（線状に溶接する場合はその両
側）は加圧されてほぼ密着された状態で溶接が行われて
いる。That is, in the case of contact welding, the joint itself is pressurized, while in the case of non-contact welding, the periphery of the joint (when both are welded in a linear shape) are pressurized. In the case of non-contact welding, the area around the joint is open without pressurization, while the area around the joint (in the case of linear welding, both sides are pressed) and almost in close contact Welding is performed.
【０００４】[0004]
【発明が解決しようとする課題】ところが、前述したよ
うな非接触溶接によると、接合箇所の周囲またはその両
側が加圧され鋼板同士が互いにほぼ密着された状態で溶
接が行われていることから、めっき鋼板を重ね合せ溶接
する際に、次に示すような問題を生ずる。第１に、めっ
き鋼板、例えば防錆鋼板の表面には表面処理によって亜
鉛層が形成されているため、その亜鉛成分が溶接熱によ
って気化する。ところが、前述したように接合箇所の周
囲等がほぼ密着されていることから、気化した亜鉛ガス
は溶融池中に混入したり、急激な発生や体積膨張等によ
って接合箇所の外部に爆発的に噴出するバースト、接合
ビードのブローホールやスパッタの原因になることがあ
る。そのため、この亜鉛ガスを密着度の比較的小さいと
ころから接合箇所外に飛散させるための溶接時間を所定
時間以上確保するという対策が採られているが、溶接時
間の短縮を妨げるという問題につながっている。However, according to the non-contact welding described above, the welding is performed in a state where the periphery of the joint or both sides thereof is pressed and the steel plates are almost in close contact with each other. When lap welding of plated steel sheets, the following problems occur. First, since a zinc layer is formed on the surface of a plated steel sheet, for example, a rustproof steel sheet, by surface treatment, the zinc component is vaporized by welding heat. However, as described above, since the periphery of the joint is almost in close contact, the vaporized zinc gas is mixed into the molten pool, or explosively expels out of the joint due to sudden generation or volume expansion. This can cause bursts, blowholes and spatters in bonding beads. For this reason, measures have been taken to secure the welding time for scattering the zinc gas from the place having a relatively small degree of adhesion to the outside of the joining portion for a predetermined time or more, but this has led to the problem of hindering the shortening of the welding time. I have.
【０００５】第２に、接合箇所の周囲またはその両側を
加圧する加圧条件のバラツキにより亜鉛ガスの飛散状態
が変動するため、これによってもブローホール、スパッ
タやその他の接合不良につながり接合品質の低下を招く
という問題がある。つまり、接合箇所の周囲の加圧が過
剰になると、めっき鋼板同士の密着度が増すところ、気
化した亜鉛ガスが外部への逃げ道を失うため、溶融池内
に溜まり、接合ビードのブローホールやスパッタの原因
になる一方で、接合箇所の周囲等の加圧が不足すると、
めっき鋼板同士の密着度が減少するため、融合不足や溶
け込み不良の原因になり、いずれも接合不良につなが
る。これにより、接合品質を低下させるという問題を招
来する。Second, the scattering of zinc gas fluctuates due to variations in the pressing conditions for pressing around or on both sides of the joint, which also leads to blowholes, spatters, and other poor joints, resulting in poor joint quality. There is a problem of causing a decrease. In other words, if the pressure around the joint is excessive, the degree of adhesion between the plated steel sheets increases, and the vaporized zinc gas loses its escape route to the outside, so it accumulates in the molten pool and blowholes and spatter On the other hand, if the pressure around the joint is insufficient,
Since the degree of adhesion between the plated steel sheets is reduced, it causes insufficient fusion and poor penetration, all of which lead to poor bonding. This leads to the problem of deteriorating the bonding quality.
【０００６】本発明は、上述した課題を解決するために
なされたものであり、その目的とするところは、溶接時
間を短縮しつつ、接合品質を向上し得るめっき鋼板の溶
接方法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a method for welding a plated steel sheet which can improve welding quality while shortening welding time. It is in.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、請求項１のめっき鋼板の溶接方法では、２枚のめっ
き鋼板を重ね合せ、この重ね合せ部の溶接方向に沿って
この重ね合せ部の両端を圧接しながら、前記重ね合せ部
の非圧接部を非接触溶接により接合するめっき鋼板の溶
接方法であって、前記２枚のめっき鋼板のうち少なくと
も一方のめっき鋼板の前記重ね合せ部の内側表面に、前
記非圧接部から圧接側端部に向かって延びる溝部を形成
した状態で、前記重ね合せ部を接合することを技術的特
徴とする。According to a first aspect of the present invention, there is provided a method for welding a plated steel sheet, comprising: laminating two plated steel sheets; The method of welding a non-pressed portion of the overlapped portion by non-contact welding while pressing both ends of the superposed portion, wherein the non-pressed portion of the superposed portion of at least one of the two plated steel plates It is a technical feature that the overlapping portion is joined in a state where a groove extending from the non-contact portion to the press-contact side end is formed on the inner surface.
【０００８】また、請求項２のめっき鋼板の溶接方法で
は、請求項１において、前記溝部は、溶接方向に対して
直交方向に前記重ね合せ部の範囲以上に延設されること
を技術的特徴とする。According to a second aspect of the present invention, there is provided a method for welding a plated steel sheet, wherein the groove is extended in a direction perpendicular to a welding direction beyond a range of the overlapping portion. And
【０００９】上記目的を達成するため、請求項３のめっ
き鋼板の溶接方法では、２枚のめっき鋼板を重ね合せ、
この重ね合せ部の溶接方向に沿ってこの重ね合せ部の両
端を圧接しながら、前記重ね合せ部の非圧接部を非接触
溶接により接合するめっき鋼板の溶接方法であって、前
記重ね合せ部のめっき鋼板間に紙を介在させた状態で、
前記重ね合せ部を接合することを技術的特徴とする。[0009] In order to achieve the above object, in the method for welding a plated steel sheet according to claim 3, two plated steel sheets are overlapped,
A method for welding a plated steel sheet, wherein a non-contact portion of the overlap portion is joined by non-contact welding while pressing both ends of the overlap portion along a welding direction of the overlap portion, With paper interposed between the plated steel sheets,
It is a technical feature that the overlapping portion is joined.
【００１０】請求項１の発明では、両端を圧接された重
ね合せ部の内側表面には、２枚のめっき鋼板のうち少な
くとも一方に非圧接部から圧接側端部に向かって延びる
溝部を形成する。これにより、重ね合せ部の両端は圧接
されても、この両端のめっき鋼板間にはこの溝部による
隙間が形成されるため、重ね合せ部の非圧接部内とめっ
き鋼板外空間を連通することができる。According to the first aspect of the present invention, a groove extending from the non-pressed portion to the press-contact side end is formed on at least one of the two plated steel plates on the inner surface of the overlapped portion pressed at both ends. . Thereby, even if both ends of the overlapped portion are pressed against each other, a gap is formed by the groove between the plated steel plates at both ends, so that the inside of the non-pressed portion of the overlapped portion and the outer space of the plated steel plate can be communicated. .
【００１１】請求項２の発明では、２枚のめっき鋼板の
うち少なくとも一方のめっき鋼板の重ね合せ部の内側表
面に形成される溝は、溶接方向に対して直交方向に重ね
合せ範囲以上に延設される。これにより、重ね合せ部の
両端は圧接されても、この両端のめっき鋼板間には、こ
の溝部による隙間が溶接方向に対して直交方向に重ね合
せ範囲以上に形成されるため、重ね合せ部の非圧接部内
とめっき鋼板外空間とを最短距離で連通することができ
る。According to the second aspect of the present invention, the groove formed on the inner surface of the overlapped portion of at least one of the two plated steel sheets extends in a direction perpendicular to the welding direction beyond the overlap range. Is established. Thereby, even if both ends of the overlapped portion are pressed against each other, a gap due to the groove is formed between the plated steel sheets at both ends in a direction perpendicular to the welding direction, which is equal to or greater than the overlapped range. The inside of the non-welded portion and the space outside the plated steel sheet can be communicated at the shortest distance.
【００１２】請求項３の発明では、両端を圧接された重
ね合せ部のめっき鋼板間には、紙を介在させている。こ
れにより、重ね合せ部の両端は圧接されても、溶接時の
めっき鋼板間に紙が介在するため、この紙内に形成され
る紙繊維の隙間または紙が燃焼した後に形成される隙間
によって重ね合せ部の非圧接部内とめっき鋼板外空間を
連通することができる。According to the third aspect of the present invention, paper is interposed between the plated steel sheets in the overlapped portion where both ends are pressed. As a result, even if both ends of the overlapped portion are pressed against each other, since paper is interposed between the plated steel sheets at the time of welding, the gap is formed by a gap between paper fibers formed in the paper or a gap formed after burning of the paper. The inside of the non-press-contact portion of the joining portion and the space outside the plated steel sheet can be communicated.
【００１３】[0013]
【発明の実施の形態】以下、本発明を具体化した実施形
態について図を参照して説明する。 （第１実施形態）まず、本発明の第１実施形態に係るめ
っき鋼板の溶接方法を用いて、亜鉛めっきされた薄板鋼
板（板厚０．６mm〜１．６mm）同士を重ね合せて溶接す
るレーザ溶接機４０の構成を図１および図２に基づいて
説明する。図２に示すように、レーザ溶接機４０は、主
に、レーザトーチ４２を備えるレーザ装置部と、素材押
え部４４および素材受け部４８を備えるテーブル本体４
６とから構成されており、テーブル本体４６上に重ね合
わせられためっき鋼板２０、３０の重ね合せ部Ｗを線状
にレーザ溶接するものである。なお、図１は、めっき鋼
板の溶接方法の概要を示す模式的に表す斜視図であり、
実際には重ね合わせた状態で溶接されるめっき鋼板２
０、３０を、めっき鋼板２０の溝形成部２１を明確にす
るため、分離して表している。したがって、図１に示す
めっき鋼板２０とめっき鋼板３０とは、重ね合せ部Ｗに
よって重ね合わせられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. (First Embodiment) First, using a method for welding a plated steel sheet according to a first embodiment of the present invention, galvanized thin steel sheets (sheet thickness: 0.6 mm to 1.6 mm) are overlapped and welded. The configuration of the laser welding machine 40 will be described with reference to FIGS. As shown in FIG. 2, the laser welding machine 40 mainly includes a laser device unit having a laser torch 42 and a table body 4 having a material holding unit 44 and a material receiving unit 48.
6, and a laser welding is performed on the overlapped portion W of the plated steel plates 20 and 30 superimposed on the table body 46 in a linear manner. FIG. 1 is a perspective view schematically showing an outline of a method of welding a plated steel sheet.
Plating steel sheet 2 which is actually welded in a superposed state
0 and 30 are separately illustrated in order to clarify the groove forming portion 21 of the plated steel sheet 20. Therefore, the plated steel sheet 20 and the plated steel sheet 30 shown in FIG.
【００１４】図示しないレーザ装置部は、レーザ発振源
から出力されたレーザビームを所定の集光器によって集
光して焦点４３ａを形成し、レーザトーチ４２からレー
ザビームとして接合箇所にレーザ光４３を照射するもの
である。前述したように、テーブル本体４６上に重ね合
わせられためっき鋼板２０、３０の重ね合せ部Ｗを、図
１に示すように線状にレーザ溶接する。なお、符号Ｚで
示す部分は、レーザ光４３によって溶解した接合溶融部
である。A laser device (not shown) converges a laser beam output from a laser oscillation source by a predetermined condenser to form a focal point 43a, and irradiates a laser beam 43 from a laser torch 42 to the joint as a laser beam. Is what you do. As described above, the overlapped portions W of the plated steel sheets 20 and 30 superimposed on the table body 46 are laser-welded linearly as shown in FIG. Note that a portion indicated by a reference sign Z is a joint melting portion melted by the laser beam 43.
【００１５】図２に示すように、テーブル本体４６は、
重ね合せ部Ｗによって所定の重ね代だけ互いに重ねられ
ためっき鋼板２０、３０を載置する幅広の台であり、こ
の重ね合せ部Ｗが位置するところには、断面コ字状に形
成された素材受け部４８が設けられている。この素材受
け部４８は、重ね合せ部Ｗの溶接方向α（図１参照）に
沿って細長に形成されており、また断面コ字状の内側空
間部には素材受け部４８の長溝部４８ａが形成されてい
る。この長溝部４８ａは、溶接時に溶け落ちる溶融物を
受けるとめる役割を果たすものである。As shown in FIG. 2, the table body 46 is
It is a wide base on which the plated steel plates 20 and 30 that are overlapped with each other by a predetermined overlapping margin by the overlapping portion W are placed, and where the overlapping portion W is located, a material formed in a U-shaped cross section. A receiving portion 48 is provided. The material receiving portion 48 is formed to be elongated along the welding direction α (see FIG. 1) of the overlapping portion W, and a long groove 48a of the material receiving portion 48 is formed in an inner space having a U-shaped cross section. Is formed. The long groove portion 48a plays a role of stopping a melt that melts down during welding.
【００１６】また、テーブル本体４６には、端部が断面
Ｊ字状に形成された板状の素材押え部４４が２箇所に設
けられており、この素材押え部４４によってテーブル本
体４６上に載置されためっき鋼板２０、３０の重ね合せ
部Ｗを溶接方向αに帯状に押圧する。つまり、図１に示
すように、素材受け部４８上に載置された重ね合せ部Ｗ
の溶接方向αに沿ってこの重ね合せ部Ｗの両端（圧接部
Ｘ）を、両側から各々の素材押え部４４によって押圧す
ると、重ね合せ部Ｗの全幅に亘ってほぼ均一にめっき鋼
板２０、３０を圧接することができるように構成されて
いる。なお、重ね合せ部Ｗの両端でない部分、即ち素材
押え部４４によって押圧されない重ね合せ部Ｗの中心部
分（非圧接部Ｙ）に、レーザ光の焦点４３ａが線状に位
置する。Further, the table body 46 is provided with two plate-shaped material holding portions 44 each having an end formed in a J-shaped cross section. The material holding portion 44 places the table body 46 on the table body 46. The overlapped portion W of the placed plated steel sheets 20, 30 is pressed in a belt shape in the welding direction α. That is, as shown in FIG. 1, the overlapping portion W placed on the material receiving portion 48
When both ends (press-contact portions X) of the overlapped portion W are pressed from both sides by the respective material pressing portions 44 along the welding direction α, the plated steel plates 20 and 30 are substantially uniformly spread over the entire width of the overlapped portion W. Are configured to be able to be pressed against each other. The focal point 43a of the laser beam is linearly located at a portion other than both ends of the overlapping portion W, that is, at a center portion (non-pressing portion Y) of the overlapping portion W that is not pressed by the material pressing portion 44.
【００１７】次に、めっき鋼板２０に形成される溝形成
部２１について説明する。図３(A) に示すように、例え
ば板厚ｔが１．０mmに設定されるめっき鋼板２０は、防
錆処理である亜鉛めっきがその表面に施されており、厚
さ約５〜１０μｍ程度の亜鉛層が形成されている。そし
て、めっき鋼板２０の端部には、複数の溝部２２から構
成される溝形成部２１が溶接工程の前加工により形成さ
れている。この溝形成部２１は、重ね合せ溶接されるめ
っき鋼板２０、３０のうち、少なくとも一方のめっき鋼
板の重ね合せ部Ｗの内側表面２０ａに形成されていれば
足りる。ただし、めっき鋼板の溝同士が重ね合わせたと
きに合致して噛み合わさるものでなければ、双方めっき
鋼板、即ちめっき鋼板２０の内側表面２０ａおよびめっ
き鋼板３０の内側表面３０ａに溝形成部２１をそれぞれ
形成しても良い。Next, the groove forming portion 21 formed in the plated steel sheet 20 will be described. As shown in FIG. 3 (A), for example, a galvanized steel plate 20 having a thickness t of 1.0 mm is provided with zinc plating, which is a rust preventive treatment, on its surface, and has a thickness of about 5 to 10 μm. Is formed. At the end of the plated steel plate 20, a groove forming portion 21 composed of a plurality of grooves 22 is formed by pre-processing of a welding process. It is sufficient that the groove forming portion 21 is formed on the inner surface 20a of the overlapping portion W of at least one of the plated steel plates 20, 30 to be overlap-welded. However, if the grooves of the plated steel sheets do not match and mesh with each other when they are overlapped, the groove forming portions 21 are formed on both the inner surface 20a of the plated steel sheet 20 and the inner surface 30a of the plated steel sheet 30, respectively. It may be formed.
【００１８】ここで、溝形成部２１を構成する溝部２２
の一つひとつに着目すると、それぞれの溝部２２は、溶
接方向αに対して直交方向に形成されており、その断面
形状はＶ字形状ないしはＵ字形状に設定されている。し
たがって、溝部２２を並列に複数形成することにより、
図３(A) 中のIII-Ｂ方向矢視による図３(B) に示すよう
なギザギザの波状を有する溝形成部２１がめっき鋼板２
０の端部に形成される。なお、本実施例の場合、溝部２
２は、溝深さＤ1 が約０．１mm、溝長さＬ1 が重ね合せ
部Ｗの幅よりも長く、また溝幅Ｗ1 が約０．２mmに設定
されている。Here, the groove portion 22 forming the groove forming portion 21
Each groove 22 is formed in a direction perpendicular to the welding direction α, and its cross-sectional shape is set to a V-shape or a U-shape. Therefore, by forming a plurality of grooves 22 in parallel,
The groove forming portion 21 having a jagged wavy shape as shown in FIG. 3B as viewed in the direction of arrows III-B in FIG.
0 is formed at the end. In this embodiment, the groove 2
In No. 2, the groove depth D1 is about 0.1 mm, the groove length L1 is longer than the width of the overlapping portion W, and the groove width W1 is about 0.2 mm.
【００１９】このようにめっき鋼板２０の端部の重ね合
せ部Ｗに、溝形成部２１を形成することによって、図２
に示すように、重ね合せ部Ｗの両端は素材押え部４４に
より圧接されても、この両端のめっき鋼板２０、３０間
にはこの溝形成部２１の溝部２２による隙間２５が形成
される。したがって、重ね合せ部Ｗの非圧接部Ｙ内とめ
っき鋼板２０、３０の外部空間とを隙間２５により連通
することから、重ね合せ部Ｗの非圧接部Ｙをレーザ溶接
により接合しても、溶接熱によって気化等する亜鉛ガス
２９ａ、２９ｂを、この隙間２５を介してめっき鋼板２
０、３０の外部空間に放出することができる。By forming the groove forming portion 21 in the overlapped portion W at the end of the plated steel sheet 20 as shown in FIG.
As shown in (2), even if both ends of the overlapping portion W are pressed against each other by the material holding portion 44, a gap 25 is formed between the plated steel plates 20 and 30 at both ends by the groove 22 of the groove forming portion 21. Therefore, since the inside of the non-pressed portion Y of the overlapped portion W and the outer space of the plated steel plates 20 and 30 communicate with each other through the gap 25, even if the non-pressed portion Y of the overlapped portion W is joined by laser welding, Zinc gas 29a, 29b, which is vaporized by heat, is applied to the plated steel sheet 2 through the gap 25.
It can be released to the outer space of 0,30.
【００２０】なお、亜鉛ガス２９ａ、２９ｂをめっき鋼
板２０、３０の外部空間に逃がすためには、前述した溝
形成部２１を構成する溝部２２を、少なくとも非圧接部
Ｙから圧接部Ｘを介してめっき鋼板２０、３０の外部空
間に連通するように構成すれば良いことから、溝形成部
２１の変形例として、図４に示すような溝形成部６１の
態様を例示することができる。つまり、溶接方向αに対
して平行に形成される溝部でなければ図４(A) に示すよ
うなローレット加工による溝部（以下「ローレット溝
部」という。）６２によって溝形成部６１を構成しても
良い。めっき鋼板２０の板厚ｔが例えば１．０mmに設定
されている場合、ローレット溝部６２は、溝深さＤ2 が
約０．１mm、溝長さＬ2 が重ね合せ部Ｗの幅よりも長
く、また溝幅Ｗ2 が約０．２mm、溝ピッチＰ2 が約１．
２mmに設定されている（図４(B) 参照）。In order to allow the zinc gas 29a, 29b to escape to the outer space of the plated steel plates 20, 30, the groove 22 forming the groove forming portion 21 must be formed at least from the non-pressure-contact portion Y to the pressure-contact portion X via the pressure-contact portion X. Since the groove may be configured so as to communicate with the outer space of the plated steel plates 20 and 30, an example of the groove forming section 61 as shown in FIG. 4 can be exemplified as a modification of the groove forming section 21. That is, if the groove is not formed parallel to the welding direction α, the groove formed by the knurl processing (hereinafter referred to as “knurl groove”) 62 as shown in FIG. good. When the thickness t of the plated steel sheet 20 is set to, for example, 1.0 mm, the knurl groove 62 has a groove depth D2 of about 0.1 mm, a groove length L2 longer than the width of the overlapped portion W, and The groove width W2 is about 0.2 mm and the groove pitch P2 is about 1.
It is set to 2 mm (see FIG. 4B).
【００２１】図４に示すようなローレット溝部６２によ
り溝形成部６１を構成すると、めっき鋼板２０内側表面
２０ａおよびめっき鋼板３０の内側表面３０ａの双方に
溝形成部６１を形成しても、重ね合せ部Ｗによって互い
のローレット溝部６２同士が合致して噛み合わさること
がない。したがって、めっき鋼板２０、めっき鋼板３０
の双方にローレット加工しても、重ね合せ部Ｗにおいて
非圧接部Ｙ内とめっき鋼板２０、３０の外部空間とを隙
間２５により確実に連通することができる。When the groove forming portion 61 is formed by the knurl grooves 62 as shown in FIG. 4, even if the groove forming portion 61 is formed on both the inner surface 20a of the plated steel plate 20 and the inner surface 30a of the plated steel plate 30, The knurled groove portions 62 do not mesh with each other due to the portions W. Therefore, the plated steel sheet 20, the plated steel sheet 30
Even when both are knurled, the gap 25 allows the inside of the non-press-contact portion Y and the outer space of the plated steel plates 20 and 30 to reliably communicate with each other.
【００２２】続いて、めっき鋼板２０、３０を重ね合せ
溶接したときに発生する亜鉛ガス２９ａ、２９ｂを、め
っき鋼板２０の溝部２２により放出する作動を図１およ
び図２に基づいて説明する。まず、テーブル本体４６上
にめっき鋼板２０およびめっき鋼板３０が重ね合わされ
た状態で載置されると、その重ね合せ部Ｗを溶接方向α
に沿って両端から圧接するために素材押え部４４が圧接
部Ｘを押圧する。すると、非圧接部Ｙの両側に位置する
圧接部Ｘは、素材押え部４４とテーブル本体４６とによ
って所定圧で挟持される。ところが、前述したようにめ
っき鋼板２０の内側表面２０ａには溝形成部２１が形成
されているため、加圧されていない非圧接部Ｙとめっき
鋼板２０、３０の外部空間とは溝部２２より形成される
隙間２５によって連通状態を維持する。つまり、重ね合
せ部Ｗの圧接部Ｘが素材押え部４４によっていくら加圧
されても、めっき鋼板２０に形成された複数の溝部２２
が押しつぶされない限り、非圧接部Ｙとめっき鋼板２
０、３０の外部空間とは隙間２５により連通した状態を
保つことができる。Next, the operation of discharging the zinc gas 29a, 29b generated when the plated steel plates 20, 30 are overlapped and welded through the groove 22 of the plated steel plate 20 will be described with reference to FIGS. First, when the plated steel sheet 20 and the plated steel sheet 30 are placed on the table body 46 in a superposed state, the superposed portion W is set in the welding direction α.
The material pressing portion 44 presses the pressing portion X in order to press the material from both ends along. Then, the press contact portions X located on both sides of the non-press contact portion Y are sandwiched between the material pressing portion 44 and the table main body 46 at a predetermined pressure. However, since the groove forming portion 21 is formed on the inner surface 20a of the plated steel plate 20 as described above, the non-pressed portion Y that is not pressed and the outer space of the plated steel plates 20 and 30 are formed by the groove 22. The communication state is maintained by the gap 25 formed. That is, no matter how much the pressing portion X of the overlapping portion W is pressed by the material pressing portion 44, the plurality of groove portions 22 formed in the plated steel plate 20 are formed.
Unless pressed, the non-welded part Y and the plated steel sheet 2
The communication with the external spaces 0 and 30 by the gap 25 can be maintained.
【００２３】続いて、レーザ光４３が重ね合せ部Ｗの圧
接部Ｘに照射されることにより、接合溶融部Ｚが形成さ
れると、同時にめっき鋼板２０、３０の亜鉛層が気化す
る。つまり、めっき鋼板２０、３０の表面に形成されて
いた亜鉛めっきによる亜鉛層が、レーザ溶接による加熱
によって気化し、亜鉛ガス２９ａ、２９ｂを発生させ
る。このとき、非圧接部Ｙの周囲が圧接部Ｘ等によって
密着状態を維持し、亜鉛ガス２９ａ、２９ｂの逃げ道を
断つことになると、発生した亜鉛ガス２９ａ、２９ｂが
非圧接部Ｙまたは接合溶融部Ｚ内に溜まるため、非圧接
部Ｙの内圧が上昇する。そのため、バーストやスパッタ
の原因、あるいは接合ビードのブローホールの原因にな
る。Subsequently, when the welded portion Z is formed by irradiating the press contact portion X of the overlapping portion W with the laser beam 43, the zinc layers of the plated steel plates 20 and 30 are vaporized at the same time. That is, the zinc layer formed by zinc plating formed on the surfaces of the plated steel plates 20 and 30 is vaporized by heating by laser welding, and generates zinc gases 29a and 29b. At this time, the periphery of the non-pressed portion Y is kept in close contact with the press-contact portion X and the like, and when the escape path of the zinc gas 29a, 29b is cut off, the generated zinc gas 29a, 29b is removed by the non-pressed portion Y or the joint melting portion. Since it is stored in Z, the internal pressure of the non-pressing portion Y increases. Therefore, it causes a burst or spatter or a blowhole of a joining bead.
【００２４】しかし、本実施形態では、前述したように
めっき鋼板２０に形成した複数の溝部２２による隙間２
５によって、非圧接部Ｙとめっき鋼板２０、３０の外部
空間とを連通、即ち亜鉛ガス２９ａ、２９ｂの逃げ道を
予め確保しているため、非圧接部Ｙまたは接合溶融部Ｚ
内に溜まることなく、めっき鋼板２０、３０の外部空間
に亜鉛ガス２９ａ、２９ｂが放出される。これにより、
気化等した亜鉛成分を亜鉛ガス２９ａ、２９ｂとして重
ね合せ部Ｗの非圧接部Ｙ外に素早く放出することができ
る。However, in the present embodiment, the gap 2 formed by the plurality of grooves 22 formed in the plated steel sheet 20 as described above is used.
5 allows the non-pressed portion Y or the joint melting portion Z to communicate with the non-pressed portion Y and the outer space of the plated steel plates 20 and 30, that is, to secure an escape route for the zinc gases 29a and 29b in advance.
The zinc gas 29a, 29b is released into the outer space of the plated steel plates 20, 30 without being accumulated inside. This allows
The vaporized zinc component can be quickly released as the zinc gas 29a, 29b to the outside of the non-pressing portion Y of the overlapping portion W.
【００２５】本発明者らの実験によると、重ね合せ部Ｗ
に溝部２２を形成しないものでは、例えばレーザ出力約
１ｋＷ時における接合速度を毎分０．７ｍ〜１．０ｍに
設定しなければバーストやスパッタあるいはブローホー
ル等の接合不良が生じていたのに対し、溝部２２を形成
したものでは、例えばレーザ出力約２ｋＷに設定し接合
速度を毎分１．５ｍ〜２．０ｍに速めてもバースト、ス
パッタやブローホール等の接合不良を生ずることなく、
良好な接合状態を得ることができた。そして、そのよう
な条件で接合されたものであっても、接合強度は、引張
強度試験において母材以上の強度を、また繰り返し強度
試験において母材相当の強度をそれぞれ得られることを
確認している。According to the experiments performed by the present inventors, the overlapping portion W
In the case where the groove portion 22 is not formed, for example, if the bonding speed at a laser output of about 1 kW is not set to 0.7 m to 1.0 m per minute, bonding failure such as burst, spatter or blow hole occurs. With the groove 22 formed, for example, even if the laser output is set to about 2 kW and the bonding speed is increased to 1.5 m to 2.0 m per minute, a bonding failure such as burst, spatter or blow hole does not occur.
A good bonding state could be obtained. And, even if they are joined under such conditions, it is confirmed that the joining strength is higher than the base material in the tensile strength test, and that the strength equivalent to the base material is obtained in the repeated strength test. I have.
【００２６】以上説明したように、本第１実施形態によ
ると、めっき鋼板２０に形成した複数の溝部２２による
隙間２５によって亜鉛ガス２９ａ、２９ｂの逃げ道を予
め確保しているため、非圧接部Ｙまたは接合溶融部Ｚ内
に亜鉛ガス２９ａ、２９ｂが溜まることなく、めっき鋼
板２０、３０の外部空間に放出することができる。これ
により、気化等した亜鉛成分を亜鉛ガス２９ａ、２９ｂ
として重ね合せ部Ｗの非圧接部Ｙ外に素早く放出するこ
とができる。したがって、従来のように亜鉛ガス２９
ａ、２９ｂを重ね合せ部の密着度の比較的小さいところ
から時間をかけて飛散させる必要がないため、溶接時間
を約半分に短縮できる効果がある。また、接合溶融部Ｚ
内に亜鉛ガス２９ａ、２９ｂが溜まることを抑制できる
ため、亜鉛ガス２９ａ、２９ｂのバーストやそれに伴う
スパッタを防止できるとともに、接合ビード部のブロー
ホール形成も防止できる。つまり、溶接時間を短縮しつ
つ、接合品質を向上し得る効果がある。As described above, according to the first embodiment, the escape paths for the zinc gases 29a and 29b are previously secured by the gaps 25 formed by the plurality of grooves 22 formed in the plated steel sheet 20, so that the non-pressed portions Y Alternatively, the zinc gas 29a, 29b can be discharged to the outer space of the plated steel plates 20, 30 without accumulating in the fusion zone Z. As a result, the vaporized zinc component is converted into zinc gas 29a, 29b.
And can be quickly discharged to the outside of the non-pressing portion Y of the overlapping portion W. Therefore, zinc gas 29
Since it is not necessary to scatter a and 29b over a relatively short time at a portion where the degree of adhesion of the overlapping portion is relatively small, there is an effect that the welding time can be reduced to about half. In addition, the joining fusion zone Z
Since the accumulation of the zinc gases 29a and 29b therein can be suppressed, the burst of the zinc gases 29a and 29b and the accompanying spatter can be prevented, and the formation of blow holes in the joining bead portion can also be prevented. That is, there is an effect that the joining quality can be improved while shortening the welding time.
【００２７】（第２実施形態）続いて、本発明の第２実
施形態に係るめっき鋼板の溶接方法を図５に基づいて説
明する。なお、第１実施形態と実質的に同一の構成部分
には同一符号を付す。図５に示すように、第２実施形態
に係るめっき鋼板の溶接方法は、めっき鋼板７０、３０
の重ね合せ部Ｗのいずれにも溝形成部を形成することな
くめっき鋼板７０とめっき鋼板３０と間に紙５１を挟み
込む点が、第１実施形態に係るめっき鋼板の溶接方法と
異なる。つまり、レーザ溶接機４０の構成は、第１実施
形態に係るめっき鋼板の溶接方法と同じであり、めっき
鋼板７０、３０自体には溝部を形成することなく、めっ
き鋼板７０とめっき鋼板３０との重ね合せ部Ｗに紙５１
を介在させている点に第２実施形態に係るめっき鋼板の
溶接方法の特徴がある。(Second Embodiment) Next, a method for welding a plated steel sheet according to a second embodiment of the present invention will be described with reference to FIG. In addition, the same reference numerals are given to the same components as those in the first embodiment. As shown in FIG. 5, the method for welding a plated steel sheet according to the second embodiment includes plating steel sheets 70, 30
The point that the paper 51 is sandwiched between the plated steel sheet 70 and the plated steel sheet 30 without forming the groove forming part in any of the overlapping portions W of the first embodiment is different from the method of welding the plated steel sheet according to the first embodiment. That is, the configuration of the laser welding machine 40 is the same as the method of welding a plated steel sheet according to the first embodiment, and the plated steel sheet 70 and the plated steel sheet 30 are formed without forming a groove in the plated steel sheets 70 and 30 themselves. Paper 51 on the overlapping portion W
The feature of the method for welding a plated steel sheet according to the second embodiment lies in the fact that the steel sheet is interposed.
【００２８】このようにめっき鋼板７０とめっき鋼板３
０との重ね合せ部Ｗに紙５１を介在させることによっ
て、重ね合せ部Ｗの両端（圧接部Ｘ）は圧接されても、
めっき鋼板７０とめっき鋼板３０との間に挟まれる紙５
１内に形成される紙繊維の隙間または紙５１が燃焼した
後に形成される隙間によって重ね合せ部Ｗの非圧接部Ｙ
内とめっき鋼板７０、３０の外部空間とを連通させるこ
とができる。これにより、重ね合せ部Ｗの非圧接部Ｙを
レーザ溶接により接合しても、紙５１により形成される
隙間によって、非圧接部Ｙとめっき鋼板７０、３０の外
部空間とを連通、即ち亜鉛ガス２９ａ、２９ｂの逃げ道
を予め確保しているため、非圧接部Ｙまたは接合溶融部
Ｚ内に溜まることなく、気化等した亜鉛成分を亜鉛ガス
２９ａ、２９ｂとして重ね合せ部Ｗの非圧接部Ｙ外に素
早く放出することができる。As described above, the plated steel sheet 70 and the plated steel sheet 3
By interposing the paper 51 in the overlapping portion W with zero, even if both ends (pressing portions X) of the overlapping portion W are pressed,
Paper 5 sandwiched between plated steel sheet 70 and plated steel sheet 30
The non-pressed portion Y of the overlapped portion W is formed by the gap between the paper fibers formed in the inside 1 or the gap formed after the paper 51 is burned.
The inside and the outer space of the plated steel plates 70 and 30 can be communicated. Thus, even if the non-pressed portion Y of the overlapped portion W is joined by laser welding, the non-pressed portion Y communicates with the outer space of the plated steel plates 70 and 30 by the gap formed by the paper 51, that is, the zinc gas Since the escape path for 29a and 29b is secured in advance, the vaporized zinc component is used as zinc gas 29a and 29b outside the non-contact portion Y of the overlapped portion W without accumulating in the non-pressure contact portion Y or the joint melting portion Z. Can be released quickly.
【００２９】したがって、本第２実施形態によると、第
１実施形態に係るめっき鋼板の溶接方法のようにめっき
鋼板２０、３０のいずれか一方の内側表面に溝形成部２
１（溝部２２）を設けることなくして、第１実施形態と
同様、溶接時間を短縮できる効果がある。また、接合溶
融部Ｚ内に亜鉛ガス２９ａ、２９ｂが溜まることを抑制
できるため、亜鉛ガス２９ａ、２９ｂのバーストやそれ
に伴うスパッタを防止できるとともに、接合ビード部の
ブローホール形成も防止できる。つまり、めっき鋼板の
前加工として溝部を設ける必要がないため、低コストに
溶接時間を短縮しつつ、接合品質を向上し得る効果があ
る。Therefore, according to the second embodiment, the groove forming portion 2 is formed on one of the inner surfaces of the plated steel plates 20 and 30 as in the method of welding the plated steel plate according to the first embodiment.
As in the first embodiment, the welding time can be shortened without providing the groove 1 (groove 22). Further, since the accumulation of the zinc gases 29a and 29b in the joint fusion zone Z can be suppressed, the burst of the zinc gases 29a and 29b and the accompanying spatter can be prevented, and the formation of blow holes in the joint bead portion can also be prevented. That is, since it is not necessary to provide a groove as a pre-processing of the plated steel sheet, there is an effect that the welding quality can be improved while reducing the welding time at low cost.
【００３０】なお、上述した各実施形態では、溶接手段
としてレーザ溶接を用いたが、本発明では、これに限ら
れることはなく、例えば非接触溶接であればプラズマア
ーク溶接、電子ビーム溶接等であっても上述同様の各効
果の得られることは言うまでもない。In each of the above embodiments, laser welding is used as the welding means. However, the present invention is not limited to this. For example, in the case of non-contact welding, plasma arc welding, electron beam welding, etc. Needless to say, the same effects as described above can be obtained.
【００３１】[0031]
【発明の効果】請求項１の発明では、両端を圧接された
重ね合せ部の内側表面には、２枚のめっき鋼板のうち少
なくとも一方に溝部を形成する。これにより、重ね合せ
部の両端は圧接されても、この両端のめっき鋼板間には
この溝部による隙間が形成されるところ、重ね合せ部の
非圧接部内とめっき鋼板外空間とを連通することから、
重ね合せ部の非圧接部を非接触溶接により接合しても、
溶接熱によって気化等するめっき成分がこの溝部による
隙間を介してめっき鋼板外空間に放出される。したがっ
て、気化等しためっき成分を外部に放出する時間を短縮
できるため、比較的短時間に溶接しても、気化等しため
っき成分によって接合ビード部にブローホールが形成さ
れたり、スパッタが発生することを抑制できるため、溶
接時間を短縮しつつ、接合品質を向上し得る効果があ
る。According to the first aspect of the present invention, a groove is formed on at least one of the two plated steel sheets on the inner surface of the overlapped portion pressed at both ends. Thereby, even if both ends of the overlapped portion are pressed, even though the gap is formed by the groove between the plated steel plates at both ends, the inside of the non-pressed portion of the overlapped portion communicates with the outer space of the plated steel plate. ,
Even if the non-welded part of the overlapping part is joined by non-contact welding,
Plating components that evaporate due to welding heat are released to the outer space of the plated steel sheet via the gaps formed by the grooves. Therefore, since the time for releasing the vaporized plating components to the outside can be shortened, even when welding is performed in a relatively short time, blow holes are formed in the joining bead due to the vaporized plating components or spatter is generated. Therefore, there is an effect that the joining quality can be improved while shortening the welding time.
【００３２】請求項２の発明では、２枚のめっき鋼板の
うち少なくとも一方のめっき鋼板の重ね合せ部の内側表
面に形成される溝は、溶接方向に対して直交方向に重ね
合せ範囲以上に延設される。これにより、重ね合せ部の
両端は圧接されても、この両端のめっき鋼板間には、こ
の溝部による隙間が溶接方向に対して直交方向に重ね合
せ範囲以上に形成されるため、重ね合せ部の非圧接部内
とめっき鋼板外空間とを最短距離で連通することができ
る。したがって、気化等しためっき成分を外部に放出す
る時間をさらに短縮できるため、より短時間で溶接して
も、気化等しためっき成分によって接合ビード部にブロ
ーホールが形成されたり、スパッタが発生することを効
率よく抑制できるため、溶接時間をさらに短縮しつつ、
接合品質をより向上し得る効果がある。According to the second aspect of the present invention, the groove formed on the inner surface of the overlapped portion of at least one of the two plated steel sheets extends in the direction perpendicular to the welding direction beyond the overlapping range. Is established. Thereby, even if both ends of the overlapped portion are pressed against each other, a gap due to the groove is formed between the plated steel sheets at both ends in a direction perpendicular to the welding direction, which is equal to or greater than the overlapped range. The inside of the non-welded portion and the space outside the plated steel sheet can be communicated at the shortest distance. Therefore, since the time for releasing the vaporized plating component to the outside can be further shortened, even when welding is performed in a shorter time, a blowhole is formed in the joining bead due to the vaporized plating component or spatter is generated. Can be suppressed efficiently, while further shortening the welding time,
There is an effect that the joining quality can be further improved.
【００３３】請求項３の発明では、両端を圧接された重
ね合せ部のめっき鋼板間には、紙を介在させている。こ
れにより、重ね合せ部の両端は圧接されても、溶接時の
めっき鋼板間に紙が介在するところ、この紙内に形成さ
れる紙繊維の隙間または紙が燃焼した後に形成される隙
間によって重ね合せ部の非圧接部内とめっき鋼板外空間
を連通することができるから、重ね合せ部の非圧接部を
非接触溶接により接合しても、溶接熱によって気化等す
るめっき成分がこの紙による隙間を介してめっき鋼板外
空間に放出される。したがって、気化等しためっき成分
を外部に放出する時間を短縮できるため、比較的短時間
に溶接しても、気化等しためっき成分によって接合ビー
ド部にブローホールが形成されたり、スパッタが発生す
ることを抑制できるため、溶接時間を短縮しつつ、接合
品質を向上し得る効果がある。According to the third aspect of the present invention, paper is interposed between the plated steel sheets in the overlapped portion where both ends are pressed. As a result, even if both ends of the overlapped portion are pressed against each other, the paper is interposed between the plated steel sheets at the time of welding, and the gap is formed by the gap between the paper fibers formed in the paper or the gap formed after the paper is burned. Since the inside of the non-welded part of the joint part and the outer space of the plated steel sheet can be communicated, even if the non-welded part of the overlap part is joined by non-contact welding, the plating component which evaporates due to welding heat causes the gap formed by this paper. Is released to the outer space of the plated steel sheet. Therefore, since the time for releasing the vaporized plating components to the outside can be shortened, even when welding is performed in a relatively short time, blow holes are formed in the joining bead due to the vaporized plating components or spatter is generated. Therefore, there is an effect that the joining quality can be improved while shortening the welding time.
【図１】本発明の第１実施形態によるめっき鋼板の溶接
方法の概要を示す模式的な斜視図である。FIG. 1 is a schematic perspective view showing an outline of a method for welding a plated steel sheet according to a first embodiment of the present invention.
【図２】第１実施形態によるめっき鋼板の溶接方法を示
す模式的な断面図である。FIG. 2 is a schematic sectional view showing a method for welding a plated steel sheet according to the first embodiment.
【図３】第１実施形態によるめっき鋼板の溶接方法に用
いられるめっき鋼板の前処理状態を示す説明図で、図３
(A) は斜視的な外観を表すもの、図３(B) は図３(A) に
示すIII-Ｂ方向矢視による側面を表すものである。FIG. 3 is an explanatory view showing a pretreatment state of a plated steel sheet used in the method for welding a plated steel sheet according to the first embodiment;
3 (A) shows a perspective view, and FIG. 3 (B) shows a side view taken in the direction of arrows III-B shown in FIG. 3 (A).
【図４】第１実施形態によるめっき鋼板の溶接方法に用
いられるめっき鋼板の前処理状態を示す説明図で、図４
(A) は斜視的な外観を表すもの、図４(B) は図４(A) に
示すIV-Ｂ 方向矢視による側面を表すものである。FIG. 4 is an explanatory view showing a pretreatment state of a plated steel sheet used in the method for welding a plated steel sheet according to the first embodiment;
4 (A) shows a perspective view, and FIG. 4 (B) shows a side view taken in the direction of arrows IV-B shown in FIG. 4 (A).
【図５】本発明の第２実施形態によるめっき鋼板の溶接
方法を示す模式的な断面図である。FIG. 5 is a schematic sectional view showing a method for welding a plated steel sheet according to a second embodiment of the present invention.
２０、３０、６０ めっき鋼板 ２０ａ、３０ａ 内側表面 ２１、６１ 溝形成部 ２２ 溝部 ２５ 隙間 ２９ａ、２９ｂ 亜鉛ガス ４０ レーザ溶接機 ４２ レーザトーチ ４３ レーザ光 ５１ 紙 ６２ ローレット溝部（溝部） Ｗ 重ね合せ部 Ｘ 圧接部 Ｙ 非圧接部 Ｚ 接合溶融部 α 溶接方向 20, 30, 60 Plated steel plate 20a, 30a Inner surface 21, 61 Groove forming part 22 Groove part 25 Gap 29a, 29b Zinc gas 40 Laser welder 42 Laser torch 43 Laser beam 51 Paper 62 Knurl groove part (groove part) W Overlap part X Pressure contact Part Y Non-welded part Z Joint fusion part α Welding direction
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２３Ｋ 26/00 ３１０ Ｂ２３Ｋ 26/00 ３１０Ｓ // Ｂ２３Ｋ 103:16 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B23K 26/00 310 B23K 26/00 310S // B23K 103: 16
Claims (3)
合せ部の溶接方向に沿ってこの重ね合せ部の両端を圧接
しながら、前記重ね合せ部の非圧接部を非接触溶接によ
り接合するめっき鋼板の溶接方法であって、 前記２枚のめっき鋼板のうち少なくとも一方のめっき鋼
板の前記重ね合せ部の内側表面に、前記非圧接部から圧
接側端部に向かって延びる溝部を形成した状態で、前記
重ね合せ部を接合することを特徴とするめっき鋼板の溶
接方法。1. A non-pressed portion of the overlapped portion is joined by non-contact welding while pressing two ends of the overlapped portion along the welding direction of the overlapped portion while superposing two plated steel sheets. A method of welding a plated steel sheet, wherein at least one of the two plated steel sheets has a groove formed on an inner surface of the overlapped portion, the groove extending from the non-pressed part toward a press-contact side end. And bonding the overlapped portions.
に前記重ね合せ部の範囲以上に延設されることを特徴と
する請求項１記載のめっき鋼板の溶接方法。2. The method for welding a plated steel sheet according to claim 1, wherein said groove portion extends in a direction orthogonal to a welding direction beyond a range of said overlapped portion.
合せ部の溶接方向に沿ってこの重ね合せ部の両端を圧接
しながら、前記重ね合せ部の非圧接部を非接触溶接によ
り接合するめっき鋼板の溶接方法であって、 前記重ね合せ部のめっき鋼板間に紙を介在させた状態
で、前記重ね合せ部を接合することを特徴とするめっき
鋼板の溶接方法。3. A non-pressed portion of the overlapped portion is joined by non-contact welding while two ends of the overlapped portion are pressed against each other along the welding direction of the overlapped portion, while two plated steel sheets are overlapped. A method for welding a plated steel sheet, wherein the overlapped part is joined in a state where paper is interposed between the plated steel sheets at the overlapped part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11058041A JP2000246445A (en) | 1999-03-05 | 1999-03-05 | Welding method for plated steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11058041A JP2000246445A (en) | 1999-03-05 | 1999-03-05 | Welding method for plated steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000246445A true JP2000246445A (en) | 2000-09-12 |
Family
ID=13072863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11058041A Pending JP2000246445A (en) | 1999-03-05 | 1999-03-05 | Welding method for plated steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000246445A (en) |
Cited By (7)
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|---|---|---|---|---|
| JP2010194605A (en) * | 2008-04-24 | 2010-09-09 | Iriso Electronics Co Ltd | Laser welding method |
| CN110480166A (en) * | 2019-07-17 | 2019-11-22 | 广东工业大学 | A kind of new process of body of a motor car galvanized sheet laser stitch welding |
| WO2019244605A1 (en) | 2018-06-22 | 2019-12-26 | 株式会社神戸製鋼所 | Method for joining plated steel sheet and joint structure |
| CN111151875A (en) * | 2020-01-08 | 2020-05-15 | 温州大学 | Method for improving strength of copper-steel dissimilar metal laser stitch welding joint |
| JP2020078822A (en) * | 2018-11-14 | 2020-05-28 | 豊田鉄工株式会社 | Vehicle constitution member |
| CN113351992A (en) * | 2020-03-06 | 2021-09-07 | 通用汽车环球科技运作有限责任公司 | Welding system and method with knurled welding interface for metal workpieces |
| CN113453833A (en) * | 2019-02-25 | 2021-09-28 | 株式会社神户制钢所 | Method for joining plated steel sheets and joined structure |
-
1999
- 1999-03-05 JP JP11058041A patent/JP2000246445A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010194605A (en) * | 2008-04-24 | 2010-09-09 | Iriso Electronics Co Ltd | Laser welding method |
| WO2019244605A1 (en) | 2018-06-22 | 2019-12-26 | 株式会社神戸製鋼所 | Method for joining plated steel sheet and joint structure |
| KR20210009378A (en) | 2018-06-22 | 2021-01-26 | 가부시키가이샤 고베 세이코쇼 | Bonding method and bonding structure of plated steel plate |
| US11982307B2 (en) | 2018-06-22 | 2024-05-14 | Kobe Steel, Ltd. | Method for joining plated steel sheet and joint structure |
| JP2020078822A (en) * | 2018-11-14 | 2020-05-28 | 豊田鉄工株式会社 | Vehicle constitution member |
| CN113453833A (en) * | 2019-02-25 | 2021-09-28 | 株式会社神户制钢所 | Method for joining plated steel sheets and joined structure |
| CN110480166A (en) * | 2019-07-17 | 2019-11-22 | 广东工业大学 | A kind of new process of body of a motor car galvanized sheet laser stitch welding |
| CN111151875A (en) * | 2020-01-08 | 2020-05-15 | 温州大学 | Method for improving strength of copper-steel dissimilar metal laser stitch welding joint |
| CN113351992A (en) * | 2020-03-06 | 2021-09-07 | 通用汽车环球科技运作有限责任公司 | Welding system and method with knurled welding interface for metal workpieces |
| US11801574B2 (en) | 2020-03-06 | 2023-10-31 | GM Global Technology Operations LLC | Welding systems and methods with knurled weld interfaces for metallic workpieces |
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