JPH06210455A - Production of panel - Google Patents
Production of panelInfo
- Publication number
- JPH06210455A JPH06210455A JP522893A JP522893A JPH06210455A JP H06210455 A JPH06210455 A JP H06210455A JP 522893 A JP522893 A JP 522893A JP 522893 A JP522893 A JP 522893A JP H06210455 A JPH06210455 A JP H06210455A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- plate
- panel
- torch
- flange portion
- 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.)
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Abstract
(57)【要約】
【目的】 パネルを組立てる際の溶接の熱でパネルに生
じる変形を小さくし、パネルの矯正工程を不要にする。
【構成】 プラズマア−ク溶接を採用し、天板（１０）
と中板のフランジ部（１２ａ）とが互いに面で重なるよ
うに鋼板を配置し、鋼板の厚み方向に立てた溶接ト−チ
（１３）で、キ−ホ−ル溶接を実施する。中板は両端の
フランジ部（１２ａ，１２ｂ）を互いに逆方向に向けた
形状にする。フランジ部を支えるバッキングブロックに
溝（１６ａ）を設け、ガス流路を形成する。ワ−クの熱
影響部が小さいので、変形が生じにくい。
(57) [Abstract] [Purpose] To reduce the deformation of the panel caused by the heat of welding when assembling the panel, and to eliminate the panel straightening process. [Composition] Plasma arc welding is adopted, and the top plate (10)
The steel plates are arranged so that the flange portion (12a) of the intermediate plate and the flange portion (12a) of the intermediate plate overlap each other, and the keyhole welding is performed by the welding torch (13) standing in the thickness direction of the steel plate. The intermediate plate has a shape in which the flange portions (12a, 12b) at both ends are directed in mutually opposite directions. A groove (16a) is provided in a backing block that supports the flange portion to form a gas flow path. Since the heat-affected zone of the work is small, deformation is unlikely to occur.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば建築，橋梁等の
床壁面構造材および２重管の柱のパネル等の製造方向に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing direction of floor wall structure materials such as buildings and bridges, and panels of columns of double pipes.
【０００２】[0002]
【従来の技術】この種のパネルは一般に、図２に示すよ
うなサンドイッチ構造になっており、互いに平行に配置
された面積の大きな底板及び天板とそれらに挟まれた縦
向きの多数の中板で構成されている。底板と中板ならび
に天板と中板は、溶接によって一体化される。2. Description of the Related Art In general, a panel of this type has a sandwich structure as shown in FIG. 2, in which a bottom plate and a top plate having a large area are arranged in parallel with each other and a large number of vertically oriented sandwiched between them. It is composed of plates. The bottom plate and the middle plate and the top plate and the middle plate are integrated by welding.
【０００３】この種のパネルを組立てる場合、従来は、
底板と中板とを突き当てた角部分、ならびに天板と中板
とを突き当てた角部分を、それぞれア−ク溶接機を用い
て図２に示すようにすみ肉溶接していた。When assembling a panel of this type, conventionally,
The corner portions where the bottom plate and the middle plate were abutted and the corner portions where the top plate and the middle plate were abutted were fillet welded using an arc welding machine as shown in FIG.
【０００４】[0004]
【発明が解決しようとする課題】上記方法で組立てられ
たパネルには、溶接時の熱の影響によって、パネルの厚
み方向に歪、即ち凹凸が発生し易い。特に最近のパネル
においては、材料の板厚が６ｍｍ程度と非常に薄くなっ
ているので、凹凸が顕著に現われる傾向がある。しかし
ながら、パネルは床等の構造材として使用されるので、
大きな凹凸があると使用できない。そこで従来は、溶接
を実施した後、パネル上の変形を生じた部分を酸素ガス
炎などの熱源を用いて局部加熱し、歪を小さくするよう
に矯正加工している。しかしこのような矯正加工は、手
作業で行なわざるを得ず、熟練を要し時間もかかるの
で、非常に大変である。The panel assembled by the above method is likely to be distorted, that is, uneven, in the thickness direction of the panel due to the influence of heat during welding. Particularly in recent panels, since the plate thickness of the material is as thin as about 6 mm, irregularities tend to appear remarkably. However, since the panel is used as a structural material such as a floor,
It cannot be used if it has large irregularities. Therefore, conventionally, after welding is performed, the deformed portion on the panel is locally heated by using a heat source such as an oxygen gas flame, and is straightened to reduce the strain. However, such a straightening process is inevitable because it requires manual work, requires skill and takes time.
【０００５】従って、本発明は、変形量の少ないパネル
の製造を容易にすることを課題とする。Therefore, it is an object of the present invention to facilitate the manufacture of a panel having a small amount of deformation.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するた
め、本発明では、少なくとも１枚の平板（１０，１１）
と該平板上に実質上垂直に起立して配置される複数の中
板とで構成される防撓パネルの製造方法において：フラ
ンジ部（１２ａ，１２ｂ）が形成された中板（１２）を
用い、該中板をそれのフランジ部が前記平板と互いに厚
み方向の面で接する状態に配置し、平板と前記フランジ
とが互いに重なった部分の面に対向して、その面に実質
上垂直な向きに移行式プラズマ溶接機のト−チ（１３）
を配置し、該ト−チ及びワ−ク（１０，１１，１２）の
少なくとも一方を移動しながら前記ト−チを用いて所定
のビ−ド長に渡ってキ−ホ−ル溶接を実施し、ビ−ドの
終点位置では、プラズマガス流速を徐々に下げるクレ−
タ処理を実施する。In order to solve the above problems, in the present invention, at least one flat plate (10, 11) is used.
In a method of manufacturing a stiffening panel, which comprises a plurality of intermediate plates arranged upright substantially vertically on the flat plate: Using an intermediate plate (12) having flange portions (12a, 12b) formed Arranging the intermediate plate such that its flange portion is in contact with the flat plate at a surface in the thickness direction, facing the surface of the overlapping portion of the flat plate and the flange, and a direction substantially perpendicular to the surface. Transfer type plasma welding machine torch (13)
And moving at least one of the torch and the work (10, 11, 12) to perform keyhole welding over a predetermined bead length using the torch. At the end point of the bead, the plasma gas flow velocity is gradually reduced.
Data processing.
【０００７】また第２番の発明では、溶接を実施する前
に、ワ−クの表側と裏側にそれぞれ金属板（１４，１
５，１６）を配置するとともに、ト−チから見て裏側の
金属板（１６）には、溶接線に沿って溝（１６ａ）を有
する当金を用いて溶接する。In the second aspect of the invention, before welding is performed, metal plates (14, 1) are provided on the front side and the back side of the work, respectively.
5, 16) are arranged and the metal plate (16) on the back side as viewed from the torch is welded using a metal having a groove (16a) along the welding line.
【０００８】なお上記括弧内に示した記号は、後述する
実施例中の対応する要素の符号を参考までに示すもので
あるが、本発明をこれらに限定する意図はない。The symbols shown in parentheses above are for reference only to the reference numerals of the corresponding elements in the examples described later, but the present invention is not intended to be limited thereto.
【０００９】[0009]
【作用】すみ肉溶接に用いるＴＩＧなどのア−ク溶接ト
−チの場合、ア−クの広がり角度は４５度程度であり、
ア−ク温度は最高で９０００度Ｃ程度である。従って、
溶接による熱は、溶接部分だけでなく、ワ−クのかなり
広い範囲に影響を及ぼす。従って広い範囲で歪が生じ、
ワ−クに凹凸が生じる。これに対して、移行式のプラズ
マト−チの場合、プラズマア−クの広がり角度は６度程
度に絞られ、温度は最高で２７０００度Ｃにも達する。
従って移行式のプラズマ溶接機で溶接を実施すれば、ワ
−クの熱影響部の広がりを最小限にとどめることがで
き、歪の発生を抑制することが可能である。In the case of an arc welding torch such as TIG used for fillet welding, the arc spread angle is about 45 degrees.
The maximum arc temperature is about 9000 ° C. Therefore,
The heat from the weld affects not only the weld, but a fairly wide range of work. Therefore, distortion occurs in a wide range,
Unevenness occurs on the work. On the other hand, in the case of the transfer type plasma torch, the spread angle of the plasma arc is reduced to about 6 degrees, and the temperature reaches up to 27,000 degrees C.
Therefore, if welding is performed by a transfer type plasma welding machine, the expansion of the heat affected zone of the work can be minimized and the occurrence of strain can be suppressed.
【００１０】ところが、パネルの材料は厚みが６ｍｍ以
下の薄鋼板であるため、平板と中板とをＴ字状に突き当
てた部分を平板の表側に垂直に立てたプラズマト−チで
図３に示すように溶接しようとすると、プラズマト−チ
を溶接線に倣うように例えば２ｍｍ以内程度の誤差で正
確に位置決めしなければならないが、プラズマト−チ側
からは溶接線が見えないので精密な倣い制御はできな
い。また、プラズマ溶接では、溶接中に孔（キ−ホ−
ル）がワ−クを貫通しないと、プラズマガス及びシ−ル
ドガスがワ−ク中に溜まるので、正常な溶接ができな
い。However, since the material of the panel is a thin steel plate having a thickness of 6 mm or less, a plasma torch in which the flat plate and the middle plate are abutted against each other in a T-shape vertically on the front side of the flat plate is shown in FIG. When welding is attempted as shown in Fig. 2, the plasma torch must be accurately positioned with an error of, for example, within 2 mm so as to follow the welding line. However, since the welding line cannot be seen from the plasma torch side, It is impossible to control copying. Further, in plasma welding, a hole (key hole) is formed during welding.
(2) does not penetrate the work, plasma gas and shield gas accumulate in the work, and normal welding cannot be performed.
【００１１】しかし本発明では、フランジ部が形成され
た中板を用い、該中板をそれのフランジ部が平板と互い
に厚み方向の面で接する状態に配置し、平板と前記フラ
ンジとが互いに重なった部分の面に対向して、その面に
実質上垂直な向きに移行式プラズマ溶接機のト−チを配
置するので、目的とする溶接線の位置に対してト−チの
位置が多少ずれたとしても、実際の溶接位置はフランジ
部の幅の範囲内に収まることになる。またワ−クの厚み
は小さいので、プラズマア−クによってワ−クを厚み方
向に貫通する孔が確実に形成され、正常にワ−クが溶接
される。またこのキ−ホ−ル溶接においては、ビ−ドの
終点位置で、プラズマガス流速を徐々に下げ、キ−ホ−
ル溶接からなめ付け溶接に移行するので、ビ−ドに生じ
るクレ−タの溶け込み深さは浅くなり、ビ−ド表面の凹
みが小さくなる。この場合、プラズマガスに比例して溶
接電流を徐々に下げる事を追加することにより、クレ−
タの溶融池は小さくなり、ビ−ド表面の凹みが更に小さ
くなる。However, in the present invention, an intermediate plate having a flange portion is used, and the intermediate plate is arranged such that the flange portion of the intermediate plate is in contact with the flat plate in the plane in the thickness direction, and the flat plate and the flange overlap each other. Since the torch of the transfer type plasma welding machine is arranged in a direction substantially perpendicular to the surface of the welded portion, the position of the torch is slightly deviated from the intended welding line position. Even if it does, the actual welding position will be within the width of the flange. Further, since the work has a small thickness, the plasma arc reliably forms a hole penetrating the work in the thickness direction, and the work is welded normally. In addition, in this keyhole welding, the plasma gas flow velocity is gradually decreased at the end point of the bead, and the keyhole welding is performed.
Since the welding shifts from the lap welding to the lap welding, the penetration depth of the crater generated in the beads becomes shallow and the depressions on the bead surface become small. In this case, the addition of gradually decreasing the welding current in proportion to the plasma gas will increase the
The weld pool becomes smaller and the depressions on the bead surface become even smaller.
【００１２】両方の端部に互いに平行でかつ互いに逆方
向に延びるフランジ部が形成された中板を用いることに
より、２枚の平行に配置された平板の間に中板を配置し
て、サンドイッチ状の防撓パネルを構成しうる。By using an intermediate plate having flange portions that are parallel to each other and extend in opposite directions to each other at both ends, the intermediate plate is disposed between two parallel flat plates. Stiffened panel may be constructed.
【００１３】更に第２番の発明では、溶接を実施する前
に、ワ−クの表側と裏側にそれぞれ金属板（１４，１
５，１６）を配置するので、これらの加圧によって溶接
の際に平板と中板のフランジ部の互いに対向する面を密
着させうる。また、前記金属板は、溶接によって発生し
た熱を放熱するのにも役立つ。しかも、ト−チから見て
裏側の金属板（１６）に溶接線に沿って形成された溝
（１６ａ）が存在するので、キ−ホ−ルを貫通して裏側
に出たガスは、前記溝を通って外部に排出される。これ
によって、ナゲット中に生じる欠陥を減らすことができ
る。即ち、溶接部に生じる亜鉛ヒュ−ム等は、ガスの流
通に伴なってワ−ク裏側に抜け、ナゲット中に残留しな
い。Further, in the second aspect of the invention, before welding is performed, metal plates (14, 1) are provided on the front side and the back side of the work, respectively.
5 and 16) are arranged, the surfaces of the flange portions of the flat plate and the intermediate plate facing each other can be brought into close contact with each other by the pressurization. In addition, the metal plate also serves to radiate heat generated by welding. Moreover, since there is a groove (16a) formed along the welding line in the metal plate (16) on the back side as seen from the torch, the gas that has penetrated the keyhole and is discharged to the back side is It is discharged to the outside through the groove. This can reduce defects that occur in the nugget. That is, zinc fume or the like generated in the welded portion escapes to the back side of the work as the gas flows and does not remain in the nugget.
【００１４】[0014]
【実施例】一実施例のパネルの一部分の構造を図１に示
す。図１を参照すると、このパネルは、天板１０，底板
１１及び中板１２によってサンドイッチ状に構成されて
いる。この例では、天板１０及び底板１１の寸法は、３
０００×１４００［ｍｍ］になっている。天板１０及び
底板１１の厚みは２．５〜４．５［ｍｍ］の範囲内で選
択され、中板１２の厚みは１．５〜２．５［ｍｍ］の範
囲内で選択される。防撓パネルの厚み、即ち天板１０か
ら底板１１までの高さは１００［ｍｍ］程度に定められ
る。また、中板１２は一定の間隔（２００［ｍｍ］）で
配置される。天板１０，底板１１及び中板１２の材質
は、亜鉛めっき処理が施された熱延鋼板である。EXAMPLE The structure of a part of the panel of one example is shown in FIG. Referring to FIG. 1, this panel is configured by a top plate 10, a bottom plate 11 and an intermediate plate 12 in a sandwich shape. In this example, the size of the top plate 10 and the bottom plate 11 is 3
It is 000 × 1400 [mm]. The thickness of the top plate 10 and the bottom plate 11 is selected in the range of 2.5 to 4.5 [mm], and the thickness of the middle plate 12 is selected in the range of 1.5 to 2.5 [mm]. The thickness of the stiffening panel, that is, the height from the top plate 10 to the bottom plate 11 is set to about 100 [mm]. Further, the intermediate plates 12 are arranged at regular intervals (200 [mm]). The material of the top plate 10, the bottom plate 11 and the middle plate 12 is a galvanized hot rolled steel plate.
【００１５】この実施例では、図１に示すように、中板
１２はその両端にフランジ部１２ａ及び１２ｂを有して
おり、フランジ部１２ａ及び１２ｂは互いに逆方向に向
いている。このパネルを組立てる際には、図１に示すよ
うに、フランジ部１２ａと天板１０とを厚み方向に重ね
合わせ、それらの面に垂直な方向に向けたプラズマト−
チによって、キ−ホ−ル溶接を実施し、それらを一体化
する。また同様に、フランジ部１２ｂと底板１１とを厚
み方向に重ね合わせ、それらの面に垂直な方向に向けた
プラズマト−チによって、キ−ホ−ル溶接を実施し、そ
れらを一体化する。２１が溶接ビ−ドである。In this embodiment, as shown in FIG. 1, the intermediate plate 12 has flange portions 12a and 12b at both ends thereof, and the flange portions 12a and 12b face in opposite directions. When assembling this panel, as shown in FIG. 1, the flange portion 12a and the top plate 10 are overlapped with each other in the thickness direction, and the plasma plate is oriented in a direction perpendicular to those surfaces.
The key is used to perform keyhole welding and integrate them. Similarly, the flange portion 12b and the bottom plate 11 are overlapped with each other in the thickness direction, and a plasma torch oriented in a direction perpendicular to the surfaces thereof is used to carry out keyhole welding to integrate them. 21 is a welding bead.
【００１６】パネルの平面が図４に示されているが、図
４を参照すると、溶接ビ−ド２１は間欠的に形成されて
いる。即ち、この例では、所定の溶接線に沿って約７５
ｍｍのビ−ド長に渡って、連続的にキ−ホ−ル溶接を実
施した後、約７５ｍｍの区間は溶接を停止し、その後再
び約７５ｍｍのビ−ド長に渡って連続的にキ−ホ−ル溶
接を実施し、これらの操作を繰り返して溶接部分と非溶
接部分とを交互に形成する。勿論、このような間欠的な
溶接であっても、充分に高い溶接強度が得られる。The plane of the panel is shown in FIG. 4, but with reference to FIG. 4, the weld beads 21 are formed intermittently. That is, in this example, about 75 along the predetermined welding line.
After continuously performing the keyhole welding over the bead length of mm, the welding is stopped at the section of about 75 mm, and then again continuously over the bead length of about 75 mm. -Hole welding is performed and these operations are repeated to form welded portions and non-welded portions alternately. Of course, even with such intermittent welding, sufficiently high welding strength can be obtained.
【００１７】実際の溶接は、例えば図５に示す状態で実
施される。図５を参照すると、中板１２のフランジ部１
２ａの下側には金属製の当金１６ｂを有するバッキング
ブロック１６が設けられ、天板１０の上面には金属製の
押え板１４及び１５が溶接線を挟むように配置されてい
る。バッキングブロック１６は固定される。従って、天
板１０とフランジ部１２ａは、押え板１４及び１５とバ
ッキングブロック１６によって厚み方向に押圧され、そ
れらの当接面が密着する状態に保持される。溶接線に対
向して、天板１０の面に対して垂直に向けたプラズマ溶
接ト−チ１３が配置される。なお図示しないが、このプ
ラズマ溶接ト−チ１３には、日鉄溶接工業株式会社製の
インバ−タプラズマ溶接機ＮＷ−３５０ＡＨが接続さ
れ、移行式プラズマア−ク溶接に必要な電力，プラズマ
ガス，冷却水，及びシ−ルドガスが供給される。また母
材（１０）には、母材ケ−ブル（ア−ス）が接続され
る。バッキングブロック１６の上面中央部、つまり天板
１０及びフランジ部１２ａを挟んでプラズマ溶接ト−チ
１３と対向する部分には、溶接方向に向かう直線状の溝
１６ａが当金１６ｂに形成されている。The actual welding is carried out in the state shown in FIG. 5, for example. Referring to FIG. 5, the flange portion 1 of the intermediate plate 12
A backing block 16 having a metal plate 16b is provided on the lower side of 2a, and metal holding plates 14 and 15 are arranged on the upper surface of the top plate 10 so as to sandwich the welding line. The backing block 16 is fixed. Therefore, the top plate 10 and the flange portion 12a are pressed in the thickness direction by the pressing plates 14 and 15 and the backing block 16, and the contact surfaces thereof are held in close contact with each other. A plasma welding torch 13 is arranged facing the welding line and oriented perpendicular to the surface of the top plate 10. Although not shown, this plasma welding torch 13 is connected to an inverter plasma welding machine NW-350AH manufactured by Nittetsu Welding Industry Co., Ltd., which is used for the transfer type plasma arc welding. Cooling water and shield gas are supplied. Further, a base material cable (earth) is connected to the base material (10). At the center of the upper surface of the backing block 16, that is, at the portion facing the plasma welding torch 13 with the top plate 10 and the flange portion 12a interposed therebetween, a linear groove 16a directed in the welding direction is formed in the metal plate 16b. .
【００１８】キ−ホ−ル溶接では、溶接中には、図６に
示すようにプラズマア−ク２４がワ−クを貫通し、キ−
ホ−ル（小孔）２３が形成される。キ−ホ−ル２３を通
ってプラズマア−ク２４とともにワ−クの裏側に抜ける
シ−ルドガス等は、溝１６ａを通って大気中に放出され
るので、ワ−クの表から裏側に向かう厚み方向にガスの
流路が形成される。このガスの流れに伴なって、溶融池
２２中に浮いた不純物（めっきされた亜鉛等）はワ−ク
の裏側に吹き飛ばされるので、溶融池２２中に残存しに
くく、従って溶接部（ナゲット）に欠陥が生じにくい。In the keyhole welding, the plasma arc 24 penetrates the work during welding as shown in FIG.
A hole (small hole) 23 is formed. Shield gas passing through the keyhole 23 to the back side of the work together with the plasma arc 24 is discharged into the atmosphere through the groove 16a, so that it goes from the front side to the back side of the work. A gas flow path is formed in the thickness direction. With the flow of this gas, impurities (plated zinc, etc.) floating in the molten pool 22 are blown off to the back side of the work, so that they are unlikely to remain in the molten pool 22 and therefore the welded portion (nugget). Is less likely to have defects.
【００１９】実際のパネルの組立ては、次のように実施
される。まず、多数の中板１２を所定間隔で並べて立
て、各々の中板のフランジ部１２ａにバッキングブロッ
ク１６をセットする。次にフランジ部１２ａ上に天板１
０を載せて所定位置に位置決めし、図７に示すように、
天板１０上に押え板１４及び１５を載せる。続いて、中
板のフランジ部１２ａに対向する位置に、図５に示すよ
うに溶接ト−チ１３を位置決めし、図４に示す溶接方向
（中板の長手方向）に向かって溶接ト−チ１３を移動し
ながら、間欠的に（７５ｍｍ長の溶接ビ−ドがとびとび
に形成されるように）キ−ホ−ル溶接を実施する。１つ
の中板に対する溶接が終了したら、他の中板のフランジ
部１２ａに対向する位置に溶接ト−チ１３を移動し、同
様に溶接を実施する。全ての中板の溶接が終了したら、
中板のバッキングブロック１６を取外し、ワ−クの裏表
を反転した後、各々の中板のフランジ部１２ｂにバッキ
ングブロック１６をセットする。次にフランジ部１２ｂ
上に底板１１を載せて所定位置に位置決めし、底板１１
上に押え板１４及び１５を載せる。続いて、中板のフラ
ンジ部１２ｂに対向する位置に、図５に示すように溶接
ト−チ１３を位置決めし、図４の溶接方向（中板の長手
方向）に向かって溶接ト−チ１３を移動しながら、間欠
的に（７５ｍｍ長の溶接ビ−ドがとびとびに形成される
ように）キ−ホ−ル溶接を実施する。１つの中板に対す
る溶接が終了したら、他の中板のフランジ部１２ａに対
向する位置に溶接ト−チ１３を移動し、同様に溶接を実
施する。全ての中板について溶接を実施する。The actual panel assembly is carried out as follows. First, a large number of middle plates 12 are arranged side by side at predetermined intervals, and the backing block 16 is set on the flange portion 12a of each middle plate. Next, the top plate 1 is placed on the flange 12a.
0 is placed and positioned at a predetermined position, as shown in FIG.
The pressing plates 14 and 15 are placed on the top plate 10. Then, the welding torch 13 is positioned at a position facing the flange portion 12a of the intermediate plate as shown in FIG. 5, and the welding torch is moved toward the welding direction (longitudinal direction of the intermediate plate) shown in FIG. While moving 13, the keyhole welding is performed intermittently (so that the welding beads having a length of 75 mm are formed intermittently). When the welding of one intermediate plate is completed, the welding torch 13 is moved to a position facing the flange portion 12a of the other intermediate plate, and welding is similarly performed. After welding all the middle plates,
After removing the backing block 16 of the middle plate and reversing the front and back of the work, the backing block 16 is set on the flange portion 12b of each middle plate. Next, the flange 12b
Place the bottom plate 11 on top and position it in place
Place the holding plates 14 and 15 on top. Subsequently, the welding torch 13 is positioned at a position facing the flange portion 12b of the intermediate plate as shown in FIG. 5, and the welding torch 13 is moved toward the welding direction (longitudinal direction of the intermediate plate) of FIG. While moving, the keyhole welding is carried out intermittently (so that the welding beads having a length of 75 mm are formed intermittently). When the welding of one intermediate plate is completed, the welding torch 13 is moved to a position facing the flange portion 12a of the other intermediate plate, and welding is similarly performed. Weld all the middle plates.
【００２０】このようにして組立てるパネルの品質を確
認するために、次に示すような４種類の各々の条件のも
とで、上板と下板を重ねて両者を溶接する実験を実施し
た。 条件１： 溶接電流：１５０［Ａ］ 溶接速度：３２［ｃｍ／分］ チップ径：２．８［ｍｍφ］ プラズマガス（Ａｒ）流量：１．８［ｌ／分］ シ−ルドガス（Ａｒ＋７％Ｈ2）流量：１０．０［ｌ／
分］ 上板板厚：３．２［ｍｍ］ 下板板厚：３．２［ｍｍ］ 上板と下板の間隙：０［ｍｍ］ 条件２： 溶接電流：１５０［Ａ］ 溶接速度：３２［ｃｍ／分］ チップ径：２．８［ｍｍφ］ プラズマガス（Ａｒ）流量：１．８［ｌ／分］ シ−ルドガス（Ａｒ＋７％Ｈ2）流量：１０．０［ｌ／
分］ 上板板厚：３．２［ｍｍ］ 下板板厚：３．２［ｍｍ］ 上板と下板の間隙：０．５［ｍｍ］ 条件３： 溶接電流：１５０［Ａ］ 溶接速度：２０［ｃｍ／分］ チップ径：２．８［ｍｍφ］ プラズマガス（Ａｒ）流量：１．５［ｌ／分］ シ−ルドガス（Ａｒ＋７％Ｈ2）流量：１０．０［ｌ／
分］ 上板板厚：３．２［ｍｍ］ 下板板厚：２．０［ｍｍ］（Ｚｎ鋼板） 上板と下板の間隙：０［ｍｍ］ 条件４： 溶接電流：１５０［Ａ］ 溶接速度：２０［ｃｍ／分］ チップ径：２．８［ｍｍφ］ プラズマガス（Ａｒ）流量：１．５［ｌ／分］ シ−ルドガス（Ａｒ＋７％Ｈ2）流量：１０．０［ｌ／
分］ 上板板厚：３．２［ｍｍ］ 下板板厚：２．０［ｍｍ］（Ｚｎ鋼板） 上板と下板の間隙：０．５［ｍｍ］ 各々の条件で溶接した結果、それぞれ次に示す寸法の溶
接ビ−ドが得られた。 条件１： 表ビ−ド幅： ９．４［ｍｍ］ 表ビ−ド高さ：０．４［ｍｍ］ 条件２： 表ビ−ド幅： ９．０［ｍｍ］ 表ビ−ド高さ：０．６［ｍｍ］ 条件３： 表ビ−ド幅： ８．２［ｍｍ］ 表ビ−ド高さ：０．８［ｍｍ］ 裏ビ−ド幅： １．２［ｍｍ］ 裏ビ−ド高さ：１．２［ｍｍ］ 条件４： 表ビ−ド幅： ８．７［ｍｍ］ 表ビ−ド高さ：０．４［ｍｍ］ また、いずれの条件で溶接した場合にも、溶接後に上板
及び下板に波打ちのような変形が認められることはなか
った。上記実験で得られたビ−ドの寸法が小さいことか
らも理解できるように、プラズマア−クを使用するキ−
ホ−ル溶接では、溶接による熱が溶接部分のみに集中す
るので、ワ−クが受ける熱影響部は極く小さく、従って
ワ−クに変形が生じることはない。溶接部分の断面形状
を図１１に示すのでこれも参照されたい。In order to confirm the quality of the panel assembled in this way, an experiment was conducted in which the upper plate and the lower plate were overlapped and welded under each of the following four conditions. Condition 1: Welding current: 150 [A] Welding speed: 32 [cm / min] Tip diameter: 2.8 [mmφ] Plasma gas (Ar) flow rate: 1.8 [l / min] Shield gas (Ar + 7% H) 2 ) Flow rate: 10.0 [l /
Minute] Upper plate thickness: 3.2 [mm] Lower plate thickness: 3.2 [mm] Gap between upper plate and lower plate: 0 [mm] Condition 2: Welding current: 150 [A] Welding speed: 32 [Cm / min] Chip diameter: 2.8 [mmφ] Plasma gas (Ar) flow rate: 1.8 [l / min] Shield gas (Ar + 7% H 2 ) flow rate: 10.0 [l /
Minute] Upper plate thickness: 3.2 [mm] Lower plate thickness: 3.2 [mm] Gap between upper plate and lower plate: 0.5 [mm] Condition 3: Welding current: 150 [A] Welding speed : 20 [cm / min] Chip diameter: 2.8 [mmφ] Plasma gas (Ar) flow rate: 1.5 [l / min] Shield gas (Ar + 7% H 2 ) flow rate: 10.0 [l /
Min] Upper plate thickness: 3.2 [mm] Lower plate thickness: 2.0 [mm] (Zn steel plate) Gap between upper plate and lower plate: 0 [mm] Condition 4: Welding current: 150 [A] Welding speed: 20 [cm / min] Tip diameter: 2.8 [mmφ] Plasma gas (Ar) flow rate: 1.5 [l / min] Shield gas (Ar + 7% H 2 ) flow rate: 10.0 [l /
Min] Upper plate thickness: 3.2 [mm] Lower plate thickness: 2.0 [mm] (Zn steel plate) Gap between upper plate and lower plate: 0.5 [mm] As a result of welding under each condition, Weld beads having the following dimensions were obtained. Condition 1: Front bead width: 9.4 [mm] Front bead height: 0.4 [mm] Condition 2: Front bead width: 9.0 [mm] Front bead height: 0.6 [mm] Condition 3: Front bead width: 8.2 [mm] Front bead height: 0.8 [mm] Back bead width: 1.2 [mm] Back bead Height: 1.2 [mm] Condition 4: Front bead width: 8.7 [mm] Front bead height: 0.4 [mm] In addition, welding is performed under any condition. After that, no deformation such as waviness was observed on the upper plate and the lower plate. As can be understood from the small size of the beads obtained in the above experiment, a key using a plasma arc
In the hole welding, since the heat generated by the welding is concentrated only on the welded portion, the heat-affected zone of the work is extremely small, and therefore the work is not deformed. See also the cross-sectional shape of the welded portion shown in FIG.
【００２１】キ−ホ−ル溶接を実施する場合、ビ−ドの
終点部分には比較的大きな凹み（クレ−タ）が生じ易い
ので、この実施例では、ビ−ドの終点位置でクレ−タ処
理を実施している。即ち、溶接ト−チ１３がビ−ドの終
点位置に到達した時に、まず溶接電流を徐々に小さくし
て所定の値にし、続いてプラズマガスの流量を徐々に減
らす。これによって、クレ−タの大きさを最小限に抑え
ることができる。このクレ−タ処理は、溶接機（ＮＷ−
３５０ＡＨ）に備わった制御機能によって、溶接終了時
に自動的に実施される。When carrying out the keyhole welding, since a relatively large dent (creator) is likely to occur at the end point of the bead, in this embodiment, the cradle is formed at the end point of the bead. Data processing. That is, when the welding torch 13 reaches the end point of the bead, the welding current is first gradually reduced to a predetermined value, and then the flow rate of the plasma gas is gradually reduced. This allows the size of the crater to be minimized. This crater processing is performed by a welding machine (NW-
(350AH), the control function is automatically performed at the end of welding.
【００２２】変形実施例のパネルの構成を図８，図９及
び図１０にそれぞれ示す。図８に示す実施例では、中板
１２Ｂがコ字形状になっているが、それ以外は前記実施
例と同一であり、同様の手順で組立てることができる。
また図９に示す実施例では、中板１２ＣがＬ型アングル
になっており、中板１２Ｃのフランジ部と天板１０とを
重ねた部分は上記実施例と同じ方法で溶接され、中板１
２Ｃの下側と底板１１とをＴ字状に突き当てた部分は、
従来の方法ですみ肉溶接される。すみ肉溶接を実施する
と、溶接による熱影響部が大きいので、底板１１に変形
が生じ易いが、パネルの用途によっては、一方の面の凹
凸のみが問題になり、他方の面の凹凸は問題にならない
場合もあるので、底板１１に変形が生じたとしても、天
板１０に変形が生じなければ、矯正せずにそのまま使用
しうる。図１０に示す実施例では、底板が廃止され、天
板１０と中板１２だけで構成されている。天板１０と中
板１２との溶接の方法は上記実施例と同一である。The construction of the panel of the modified embodiment is shown in FIGS. 8, 9 and 10, respectively. In the embodiment shown in FIG. 8, the middle plate 12B has a U-shape, but other than that, it is the same as the above-mentioned embodiment and can be assembled by the same procedure.
Further, in the embodiment shown in FIG. 9, the middle plate 12C has an L-shaped angle, and the portion where the flange portion of the middle plate 12C and the top plate 10 are overlapped is welded by the same method as in the above-mentioned embodiment, and the middle plate 1
The portion where the lower side of 2C and the bottom plate 11 are abutted in a T shape is
Fillet welded by conventional methods. When fillet welding is performed, since the heat-affected zone due to welding is large, the bottom plate 11 is likely to be deformed, but depending on the application of the panel, only the unevenness of one surface becomes a problem, and the unevenness of the other surface becomes a problem. In some cases, even if the bottom plate 11 is deformed, if the top plate 10 is not deformed, it can be used as it is without being corrected. In the embodiment shown in FIG. 10, the bottom plate is eliminated and only the top plate 10 and the middle plate 12 are provided. The method of welding the top plate 10 and the middle plate 12 is the same as in the above-described embodiment.
【００２３】以上、天板及び底板が曲がりを有しない平
面の例で説明したが、パネル全体が所定の曲がりを有す
るものにも本発明は適用できる。Although the top plate and the bottom plate have been described as an example of a flat surface without bending, the present invention can be applied to a panel having a predetermined bending.
【００２４】[0024]
【発明の効果】以上のとおり本発明によれば、変形量の
少ないパネルを容易に製造できる。しかも、本発明では
フランジ部が形成された中板を用い、該中板をそれのフ
ランジ部が平板と互いに厚み方向の面で接する状態に配
置し、平板と前記フランジとが互いに重なった部分の面
に対向して、その面に実質上垂直な向きに移行式プラズ
マ溶接機のト−チを配置するので、目的とする溶接線の
位置に対してト−チの位置が多少ずれたとしても、実際
の溶接位置はフランジ部の幅の範囲内に収まることにな
る。またワ−クの厚みは小さいので、プラズマア−クに
よってワ−クを厚み方向に貫通する孔が確実に形成さ
れ、正常にワ−クが溶接される。またこのキ−ホ−ル溶
接においては、ビ−ドの終点位置で、プラズマガス流速
を徐々に下げるので、ビ−ドに生じるクレ−タの大きさ
は充分に小さくなる。As described above, according to the present invention, a panel with a small amount of deformation can be easily manufactured. Moreover, in the present invention, an intermediate plate having a flange portion is used, and the intermediate plate is arranged such that its flange portion is in contact with a flat plate at a surface in the thickness direction, and the flat plate and the flange are overlapped with each other. Since the torch of the transfer type plasma welding machine is arranged so as to face the surface and in a direction substantially perpendicular to the surface, even if the position of the torch is slightly deviated from the intended position of the welding line. The actual welding position will be within the range of the flange width. Further, since the work has a small thickness, the plasma arc reliably forms a hole penetrating the work in the thickness direction, and the work is welded normally. Further, in this keyhole welding, the plasma gas flow velocity is gradually reduced at the end point of the bead, so that the size of the crater generated in the bead becomes sufficiently small.
【００２５】両方の端部に互いに平行でかつ互いに逆方
向に延びるフランジ部が形成された中板を用いることに
より、２枚の平行に配置された平板の間に中板を配置し
て、サンドイッチ状のパネルを構成しうる。By using a middle plate having flange portions that are parallel to each other and extend in opposite directions to each other at both ends, the middle plate is arranged between two parallel flat plates to sandwich the sandwich plate. Can form a panel of the shape.
【００２６】第３番の発明では、溶接を実施する前に、
ワ−クの表側と裏側にそれぞれ金属板を配置するので、
これらの加圧によって溶接の際に平板と中板のフランジ
部の互いに対向する面を密着させうる。また、前記金属
板は、溶接によって発生した熱を放熱するのにも役立
つ。しかも、ト−チから見て裏側の金属板に溶接線に沿
って形成された溝が存在するので、キ−ホ−ルを貫通し
て裏側に出たガスは、前記溝を通って外部に排出され
る。これによって、ナゲット中に生じる欠陥を減らすこ
とができる。即ち、溶接部に生じる亜鉛ヒュ−ム等は、
ガスの流通に伴なってワ−ク裏側に抜け、ナゲット中に
残留しない。In the third invention, before welding is performed,
Since metal plates are placed on the front side and the back side of the work respectively,
By applying these pressures, the surfaces of the flange portions of the flat plate and the intermediate plate that face each other can be brought into close contact during welding. In addition, the metal plate also serves to radiate heat generated by welding. Moreover, since there is a groove formed along the welding line in the metal plate on the back side as seen from the torch, the gas that has penetrated the keyhole and is discharged to the back side passes through the groove to the outside. Is discharged. This can reduce defects that occur in the nugget. That is, the zinc fume, etc. generated in the welded part,
As gas flows, it escapes to the back of the work and does not remain in the nugget.
【図１】 一実施例のパネルの一部分を示す拡大斜視図
である。FIG. 1 is an enlarged perspective view showing a part of a panel according to an embodiment.
【図２】 パネルの従来例を示す斜視図である。FIG. 2 is a perspective view showing a conventional example of a panel.
【図３】 溶接の例を示す正面図である。FIG. 3 is a front view showing an example of welding.
【図４】 実施例のパネルの一部分を示す平面図であ
る。FIG. 4 is a plan view showing a part of the panel of the embodiment.
【図５】 実施例のパネルの一部分の溶接工程を示す正
面図である。FIG. 5 is a front view showing a welding process of a part of the panel of the example.
【図６】 実施例の溶接状態を示す縦断面図である。FIG. 6 is a vertical cross-sectional view showing a welded state of the example.
【図７】 実施例の組立中のパネルの全体を示す正面図
である。FIG. 7 is a front view showing the entire panel during assembly of the embodiment.
【図８】 変形実施例のパネルを示す正面図である。FIG. 8 is a front view showing a panel of a modified example.
【図９】 変形実施例のパネルを示す正面図である。FIG. 9 is a front view showing a panel of a modified example.
【図１０】 変形実施例のパネルを示す正面図である。FIG. 10 is a front view showing a panel of a modified example.
【図１１】 パネルの溶接部を示す縦断面図である。FIG. 11 is a vertical sectional view showing a welded portion of the panel.
１０：天板 １１：底板 １２，１２Ｂ，１２Ｃ：中板 １２ａ，１２ｂ：フランジ部 １３：プラズマ溶接ト−チ １４，１５：押え板 １６：バッキングブロック １６ａ：溝 １６ｂ：当金 ２１：溶接ビ−ド ２２：溶融池 ２３：キ−ホ−ル ２４：プラズマア−ク 10: Top plate 11: Bottom plate 12, 12B, 12C: Middle plate 12a, 12b: Flange portion 13: Plasma welding torch 14, 15: Holding plate 16: Backing block 16a: Groove 16b: Metal 21: Welding beer Do 22: Molten pool 23: Keyhole 24: Plasma arc
───────────────────────────────────────────────────── フロントページの続き (72)発明者 作 野 文 彦 千葉県 習志野市 東習志野 ７丁目６番 １号 日鐵溶接工業株式会社機器事業部内 (72)発明者 藤 山 裕 久 千葉県 習志野市 東習志野 ７丁目６番 １号 日鐵溶接工業株式会社機器事業部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Fumihiko Nono 7-6-1, Higashi Narashino, Narashino City, Chiba Prefecture, Nippon Welding Industry Co., Ltd. (72) Inventor Hirohisa Fujiyama Narashino City, Chiba Prefecture Higashi Narashino 7-6-1, Nittetsu Welding Industry Co., Ltd.
Claims (2)
上垂直に起立して配置される複数の中板とで構成される
パネルの製造方法において：フランジ部が形成された中
板を用い、該中板をそれのフランジ部が前記平板と互い
に厚み方向の面で接する状態に配置し、平板と前記フラ
ンジとが互いに重なった部分の面に対向して、その面に
実質上垂直な向きに移行式プラズマ溶接機のト−チを配
置し、該ト−チ及びワ−クの少なくとも一方を移動しな
がら前記ト−チを用いて所定のビ−ド長に渡ってキ−ホ
−ル溶接を実施し、ビ−ドの終点位置では、プラズマガ
ス流速を徐々に下げるクレ−タ処理を実施する、ことを
特徴とする、パネルの製造方法。1. A method of manufacturing a panel comprising at least one flat plate and a plurality of intermediate plates standing upright substantially vertically on the flat plate: using an intermediate plate having a flange portion formed therein Arranging the intermediate plate such that its flange portion is in contact with the flat plate at a surface in the thickness direction, facing the surface of the overlapping portion of the flat plate and the flange, and a direction substantially perpendicular to the surface. A torch of a transfer type plasma welding machine is arranged in the keyhole, and a keyhole is used over a predetermined bead length by using the torch while moving at least one of the torch and the work. A method for manufacturing a panel, wherein welding is carried out, and at the end point of the bead, a crete treatment for gradually reducing the plasma gas flow velocity is carried out.
側にそれぞれ金属板を配置するとともに、ト−チから見
て裏側の金属板には、溶接線に沿って溝を有する当金を
用いて溶接する、前記請求項１記載のパネルの製造方
法。2. Before performing welding, metal plates are arranged on the front side and the back side of the work, respectively, and the metal plate on the back side viewed from the torch has a groove along the welding line. The method for manufacturing a panel according to claim 1, wherein welding is performed using gold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP522893A JPH06210455A (en) | 1993-01-14 | 1993-01-14 | Production of panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP522893A JPH06210455A (en) | 1993-01-14 | 1993-01-14 | Production of panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06210455A true JPH06210455A (en) | 1994-08-02 |
Family
ID=11605335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP522893A Withdrawn JPH06210455A (en) | 1993-01-14 | 1993-01-14 | Production of panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06210455A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506746A (en) * | 2013-09-27 | 2014-01-15 | 保定天威集团有限公司 | Method and special tools for anti-deformation machining of flux barriers of clamp pulling plate of transformer |
| CN107999984A (en) * | 2017-12-05 | 2018-05-08 | 成都市鹰诺实业有限公司 | A kind of welding method for discharging thermal energy Reducing distortion |
| CN113263281A (en) * | 2021-05-18 | 2021-08-17 | 广州中益机械有限公司 | Method for welding thin plate and thick plate |
-
1993
- 1993-01-14 JP JP522893A patent/JPH06210455A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506746A (en) * | 2013-09-27 | 2014-01-15 | 保定天威集团有限公司 | Method and special tools for anti-deformation machining of flux barriers of clamp pulling plate of transformer |
| CN107999984A (en) * | 2017-12-05 | 2018-05-08 | 成都市鹰诺实业有限公司 | A kind of welding method for discharging thermal energy Reducing distortion |
| CN113263281A (en) * | 2021-05-18 | 2021-08-17 | 广州中益机械有限公司 | Method for welding thin plate and thick plate |
| CN113263281B (en) * | 2021-05-18 | 2022-02-11 | 广州中益机械有限公司 | Method for welding thin plate and thick plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000404 |