JPS588955B2 - Seam welding method - Google Patents
Seam welding methodInfo
- Publication number
- JPS588955B2 JPS588955B2 JP12608077A JP12608077A JPS588955B2 JP S588955 B2 JPS588955 B2 JP S588955B2 JP 12608077 A JP12608077 A JP 12608077A JP 12608077 A JP12608077 A JP 12608077A JP S588955 B2 JPS588955 B2 JP S588955B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- current
- metal plates
- nugget
- seam 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.)
- Expired
Links
Landscapes
- Resistance Welding (AREA)
Description
【発明の詳細な説明】
本発明は、重ね合わされた板厚の内少なくとも1枚が他
とは異なる厚さを有する3枚以上の金属板のそれぞれの
板間に、適正なナゲットを同時に溶接線方向に連続して
形成させるシーム溶接法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for simultaneously welding appropriate nuggets between three or more metal plates, in which at least one of the overlapping plates has a thickness different from the others. This relates to a seam welding method in which seam welding is performed continuously in a direction.
従来のシーム溶接の通電方法には、添付図面第1図Aに
おいて単相交番電流波形によって示すように溶接電流1
を連続して通電する連続通電法と、同図Bにおいて単相
交番電流波形によって示される溶接電流1の通電時間2
の通電と休止時間3における休止とを交互に繰り返す断
続通電法とがある。The conventional seam welding method includes a welding current of 1 as shown by the single-phase alternating current waveform in Figure 1A of the attached drawings.
Continuous energization method in which energization is continuously applied, and energization time 2 of welding current 1 shown by the single-phase alternating current waveform in Figure B.
There is an intermittent energization method that alternately repeats energization at 3 and a pause at rest time 3.
これらの従来のシーム溶接の通電方法のうち、第1図A
において示される連続通電法は、薄い金属板を高速で溶
接する場合に用いられるが、一般的に用いられる方法は
第1図Bにおいて示される断続通電法である。Among these conventional seam welding energizing methods, Fig. 1A
The continuous energization method shown in FIG. 1B is used when welding thin metal plates at high speed, but the intermittent energization method shown in FIG. 1B is commonly used.
しかしながら、従来の断続通電法によっては、例えば、
第2図及び第3図において示されるような重ね合わされ
た板厚の異なる3枚以上の金属板を被溶接材とするシー
ム溶接においては、次のような不都合が生ずる。However, depending on the conventional intermittent energization method, for example,
In seam welding in which three or more overlapping metal plates of different thicknesses are welded as shown in FIGS. 2 and 3, the following disadvantages occur.
すなわち、回転円板電極4,4′によって加圧通電して
シーム溶接する場合、溶接条件を薄い金属板5に適合さ
せて回転円板電極4,4′による加圧力及び溶接電流を
小さくし、且つ、通電時間も短くするならば、第2図に
示されるような被溶接材の組み合わせにおいては、同図
Aにおいて示されるように、薄い金属板5と厚い金属板
6との板間には溶接線方向に連続したナゲット7が形成
するが、2枚の厚い金属板6及び6lの板間にはナゲッ
トが形成し得ない。That is, when seam welding is performed by applying pressure and current using the rotating disk electrodes 4, 4', the welding conditions are adapted to the thin metal plate 5, and the pressurizing force and welding current by the rotating disk electrodes 4, 4' are reduced. In addition, if the current application time is to be shortened, in the combination of materials to be welded as shown in FIG. 2, there is a gap between the thin metal plate 5 and the thick metal plate 6 as shown in FIG. A continuous nugget 7 is formed in the direction of the weld line, but no nugget can be formed between the two thick metal plates 6 and 6l.
また、第3図に示されるような厚い金属板6と6′との
間に補助の電極板8を有する被溶接材の組み合わせにお
いては、これも同様に、同図Aにおいて示されるように
、薄い金属板5と厚い金属板6との板間には連続したナ
ゲット7′が形成されるが、厚い金属板6lと61との
間にはナゲットを形成し得ない。Furthermore, in a combination of materials to be welded having an auxiliary electrode plate 8 between the thick metal plates 6 and 6' as shown in FIG. 3, this also applies as shown in FIG. A continuous nugget 7' is formed between the thin metal plate 5 and the thick metal plate 6, but no nugget can be formed between the thick metal plates 6l and 61.
また、逆に、厚い金属板6及び6′、又は、6′及び6
lに溶接条件を適合させ、回転円板電極4,4′による
加圧力と溶接電流を大きくし、且つ、通電時間を長くす
ると、第2図に示すような被溶接材の組み合わせにおい
ては、同図Bにおいて示されるように、厚い金属板6及
び6′の板間に連続したナゲット9が形成されるけれど
も薄い金属板5と厚い金属板6との板間にはナゲットは
形成されない。Conversely, thick metal plates 6 and 6' or 6' and 6
If the welding conditions are adapted to 1, the pressing force and welding current by the rotating disk electrodes 4, 4' are increased, and the energization time is lengthened, the same result can be achieved for the combination of materials to be welded as shown in Fig. 2. As shown in Figure B, a continuous nugget 9 is formed between the thick metal plates 6 and 6', but no nugget is formed between the thin metal plate 5 and the thick metal plate 6.
また、第3図において示されるような被溶接材の組み合
わせにおいては、同図Bに示すように、厚い金属板6′
及び6′の板間に連続したナゲット9′が形成するだけ
であって、薄い金属板5と厚い金属板6との板間にはナ
ゲットは形成し得ない。In addition, in the combination of materials to be welded as shown in FIG. 3, as shown in FIG.
Only a continuous nugget 9' is formed between the plates 5 and 6', and no nugget can be formed between the thin metal plate 5 and the thick metal plate 6.
また、溶接条件を薄い金属板と厚い金属板と厚い金属板
との中間的な条件に設定するならば、薄い金属板と厚い
金属板との板厚比が小さい場合には、それぞれの板間に
連続したナゲット7,9又は7’,9’を形成し得るが
、しかしながら、すべての金属板が同じ板厚の場合と比
べて、このような場合における溶接条件裕度は小さくな
り、しかも、この溶接条件裕度は板厚比が大きくなるに
従って小さくなり、一定の板厚比以上になると、表面が
溶融するような大きい溶接電流を流したとしても連続し
たナゲットを金属板のそれぞれの板間に形成することは
不可能となる。Also, if welding conditions are set to intermediate conditions between a thin metal plate, a thick metal plate, and a thick metal plate, if the thickness ratio of the thin metal plate and the thick metal plate is small, Continuous nuggets 7, 9 or 7', 9' can be formed, however, the welding condition latitude in such a case is smaller than in the case where all the metal plates have the same thickness, and furthermore, This welding condition tolerance decreases as the plate thickness ratio increases, and when the plate thickness ratio exceeds a certain value, even if a large welding current that melts the surface is applied, continuous nuggets cannot be separated between each plate of the metal plate. It becomes impossible to form a
このように、従来の断続通電法による板厚の異なる3枚
以上の金属板のシーム溶接においては、溶接条件裕度は
小さく、溶接可能な板厚比も小さい範囲に限られるとい
う欠点があった。In this way, when seam welding three or more metal plates with different thicknesses using the conventional intermittent energization method, the welding condition latitude is small and the weldable plate thickness ratio is limited to a small range. .
本発明方法は、このような従来の欠点を除去し、板厚の
異なる3枚以上の金属板のシーム溶接における溶接条件
裕度を犬にし、溶接可能な金属板の板厚比を犬にするよ
うな通電方法による溶接法を得ることを、その目的とす
るものである。The method of the present invention eliminates such conventional drawbacks, increases the welding condition tolerance in seam welding of three or more metal plates with different thicknesses, and increases the plate thickness ratio of weldable metal plates. The purpose is to obtain a welding method using such an energization method.
以下、本発明方法をその一実施例を示す添付図面に基づ
いて説明する。Hereinafter, the method of the present invention will be explained based on the accompanying drawings showing one embodiment thereof.
第4図において、断続する溶接電流11は、薄ぃ金属板
を溶接するための溶接条件に適合し且つ厚い金属板間に
ナゲットの核が生ずるような大きな電流値を有し通電時
間の前期において通電される前期溶接電流11′と、厚
い金属板を溶接するための溶接条件に適合した前期溶接
電流11′よりは小さな電流値を有し、通電時間の後期
において通電される後期溶接電流11′とから成ってお
り、また、断続する溶接電流11、特に前期及び後期溶
接電流11’,11’がそれぞれ通電される通電時間1
2は前期溶接電流11′が通電される時間すなわち前期
通電時間12/と、後期溶接電流11〃が通電される時
間すなわち後期通電時間12′とから成っており、通電
時間12は後期溶接電流11〃と共に厚い金属板の溶接
条件に適合した通電時間であり、前期通電時間12′は
薄い金属板の溶接条件に適合した通電時間である。In FIG. 4, the intermittent welding current 11 has a current value that is large enough to meet the welding conditions for welding thin metal plates and that causes nugget nuclei to form between thick metal plates, and in the first half of the current flow time. The latter welding current 11' has a current value smaller than the earlier welding current 11' which is applied in the latter half of the welding time and which is suitable for the welding conditions for welding a thick metal plate. and an energization time 1 during which the intermittent welding current 11, especially the early and late welding currents 11' and 11' are applied, respectively.
2 consists of the time during which the early welding current 11' is applied, that is, the early current application time 12/, and the time during which the latter welding current 11 is applied, that is, the latter current application time 12'. The first current application time 12' is a current application time that is suitable for welding conditions for thick metal plates, and the first current application time 12' is a current application time that is suitable for welding conditions for thin metal plates.
本発明方法は上記のような構成を有するが、次ぎにその
作動について説明する。The method of the present invention has the above configuration, and its operation will be explained next.
まず、薄い金属板間の溶接条件、例えば、第2図及び第
3図において示す薄い金属板5と厚い金属板6との間の
溶接条件に適合させた電流値を有する前期溶接電流11
’を前期通電時間12′の間通電すると、これによって
薄い金属板5ど厚い金属板6との板間に溶接線方向に連
続したナゲット7又は7′が形成すると共に厚い板間す
なわち第2図においては厚い金属板6と6′との間、ま
た、第3図においては6′と6′との間にナゲット9又
は9/の成長の核となる小さなナゲットが発生する。First, the initial welding current 11 has a current value adapted to the welding conditions between thin metal plates, for example, the welding conditions between the thin metal plate 5 and the thick metal plate 6 shown in FIGS. 2 and 3.
When ' is energized for the initial energization time 12', a continuous nugget 7 or 7' is formed between the thin metal plate 5 and the thick metal plate 6 in the direction of the welding line, and the gap between the thick plates, i.e., as shown in FIG. A small nugget is generated between the thick metal plates 6 and 6', or between 6' and 6' in FIG. 3, which becomes the nucleus for the growth of the nugget 9 or 9/.
引き続いて前期溶接電流11′よりも小さい、厚い金属
板間例えば第2図における6と6′間、又は、第3図に
おける6′と6′間の溶接条件に適合した電流値を有す
る後期溶接電流11′を当該溶接条件に適合した後期通
電時間12′の間通電する。Subsequently, the latter welding has a current value that is lower than the earlier welding current 11' and is suitable for the welding conditions between thick metal plates, for example between 6 and 6' in FIG. 2, or between 6' and 6' in FIG. A current 11' is applied during a later energization time 12' that is compatible with the welding conditions.
この後期通電時間12“の通電によって、先の前期通電
時間12′の間に発生した厚い金属板6と6′、又は、
6′と6′との間の小さなナゲットは成長拡大して大き
なナゲット9又は9′となる。Due to the energization during the latter energization time 12'', the thick metal plates 6 and 6' that occurred during the earlier energization time 12' or
The small nugget between 6' and 6' grows and expands to become a large nugget 9 or 9'.
このような操作を繰り返すことによって、溶接方向に連
続してナゲットが形成される。By repeating such operations, nuggets are formed continuously in the welding direction.
このようにして、薄い金属板、すなわち、第2図及び第
3図においては金属板5と6との間に、また、厚い金属
板すなわち、第2図においては金属板6と6′との間、
また、第3図においては金属板6′と6′との間のすべ
ての板間に断続する通電時間12の間に共にナゲットを
形成させ、これを繰り返すことによって、溶接線方向に
連続的にナゲットを形成させることができる。In this way, between the thin metal plates, i.e. metal plates 5 and 6 in FIGS. 2 and 3, and between the thick metal plates, i.e. metal plates 6 and 6' in FIG. while,
In addition, in FIG. 3, a nugget is formed between all the metal plates 6' and 6' during the intermittent energization time 12, and by repeating this process, a nugget is formed continuously in the welding line direction. Nuggets can be formed.
以上のように本発明によると、薄い金属板間のシーム溶
接と厚い金属板間のシーム溶接とを共に必要とする重ね
合わせ板の溶接過程において、前期溶接電流と後期溶接
電流との大きさを変えることなく同じ大きさとした場合
においては所望板間にナゲットが形成しないような薄い
金属板と厚い金属板との板厚比においてさえも、本発明
方法によるならば、満足することのできる連続したナゲ
ットを所望板間に形成さすことができる。As described above, according to the present invention, in the welding process of stacked plates that requires both seam welding between thin metal plates and seam welding between thick metal plates, the magnitude of the early welding current and the latter welding current is controlled. Even if the thickness ratio between the thin metal plate and the thick metal plate is such that no nugget is formed between the desired plates when the size remains the same, the method of the present invention can provide a satisfactory continuous Nuggets can be formed between the desired plates.
このように本発明方法によるならば、板厚の異なる3枚
以上の金属板のシーム溶接においてその溶接条件裕度を
大きく、且つ、溶接可能な薄い板と厚い板との板厚比も
大きくし得ると共に、それぞれの金属板の板間に連続し
たナゲットを従来方法に比べて安定して同時に形成し得
ることが可能である効果がある。As described above, according to the method of the present invention, it is possible to increase the welding condition latitude in seam welding three or more metal plates with different thicknesses, and also increase the thickness ratio between the weldable thin plate and thick plate. At the same time, continuous nuggets can be simultaneously formed between the respective metal plates more stably than in conventional methods.
第1図はシーム溶接における従来の通電方法を示す溶接
電流波形図で、Aは連続通電法による場合、Bは断続通
電法による場合、第2図及び第3図は断続通電法によっ
た従来のシーム溶接法に基づくナゲット生成過程説明図
で、第3図は中間に補助電極板8を設けた例であり、そ
れぞれAは薄い板間にだけ、また、Bは厚い板間にだけ
、ナゲットが生成した場合、第4図は本発明方法の一実
施例の通電方法の溶接電流波形図である。
1,11……溶接電流、2,12……通電時間、3……
休止時間、4,4′……回転円板電極、5……薄い金属
板、6,6’,6’……厚い金属板、7,7′……薄い
金属板間に生成したナゲット、9,9l……厚い金属板
間に生成したナゲット、11l……薄い金属板の溶接条
件に応じた前期溶接電流、11′……厚い金属板の溶接
条件に応じた後期溶接電流、12′……薄い金属板の溶
接条件に応じた前期通電時間、12′……厚い金属板の
溶接条件に応じた後期通電時間。Figure 1 is a welding current waveform diagram showing the conventional energization method in seam welding, where A is the continuous energization method, B is the intermittent energization method, and Figures 2 and 3 are the welding current waveform diagrams showing the conventional energization method in seam welding. Fig. 3 is an explanatory diagram of the nugget generation process based on the seam welding method, and Fig. 3 is an example in which an auxiliary electrode plate 8 is provided in the middle. FIG. 4 is a welding current waveform diagram of an energization method according to an embodiment of the method of the present invention. 1, 11... Welding current, 2, 12... Current application time, 3...
Pause time, 4, 4'... Rotating disk electrode, 5... Thin metal plate, 6, 6', 6'... Thick metal plate, 7, 7'... Nugget generated between thin metal plates, 9 , 9l... Nugget generated between thick metal plates, 11l... Early welding current according to welding conditions for thin metal plates, 11'... Late welding current depending on welding conditions for thick metal plates, 12'... Early energization time according to welding conditions for thin metal plates, 12'...Late energization time according to welding conditions for thick metal plates.
Claims (1)
上の金属板を重ね合わせ、重ね合わされた上記金属板を
一対の電極間に狭み、上記電極を上記金属板に対して相
対的に動かしつつ上記電極間に通電期間が断続する単相
交流溶接電流を流して上記金属板間の溶接部を同時にシ
ーム溶接する方法において、1つの通電期間中に電流値
の異なる少なくとも2種の電流を続けて通電するように
したことを特徴とするシーム溶接法。 2 少なくとも2種の電流を、電流値の大きな電流を最
先として電流値の大きさの順に通電する特許請求の範囲
第1項記載のシーム溶接法。[Claims] 1. Three or more metal plates, at least one of which has a different thickness from the others, are stacked, the stacked metal plates are sandwiched between a pair of electrodes, and the electrodes are placed between the metal plates. In a method of simultaneously seam welding the welded portion between the metal plates by passing a single-phase alternating current welding current with intermittent current-carrying periods between the electrodes while moving the electrodes relative to A seam welding method characterized in that at least two types of current are applied in succession. 2. The seam welding method according to claim 1, wherein at least two types of current are applied in order of magnitude of current value, with the current having the largest current value first.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12608077A JPS588955B2 (en) | 1977-10-19 | 1977-10-19 | Seam welding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12608077A JPS588955B2 (en) | 1977-10-19 | 1977-10-19 | Seam welding method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5458656A JPS5458656A (en) | 1979-05-11 |
JPS588955B2 true JPS588955B2 (en) | 1983-02-18 |
Family
ID=14926105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12608077A Expired JPS588955B2 (en) | 1977-10-19 | 1977-10-19 | Seam welding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS588955B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8058584B2 (en) * | 2007-03-30 | 2011-11-15 | Nissan Motor Co., Ltd. | Bonding method of dissimilar materials made from metals and bonding structure thereof |
JP5606884B2 (en) * | 2010-11-25 | 2014-10-15 | 本田技研工業株式会社 | Body seam welding structure |
US10406625B2 (en) * | 2014-07-17 | 2019-09-10 | Honda Motor Co., Ltd. | Seam-welding method and device therefor |
-
1977
- 1977-10-19 JP JP12608077A patent/JPS588955B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5458656A (en) | 1979-05-11 |
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