JPH08243751A - One pass submerged arc welding method for corner joint - Google Patents
One pass submerged arc welding method for corner jointInfo
- Publication number
- JPH08243751A JPH08243751A JP7841695A JP7841695A JPH08243751A JP H08243751 A JPH08243751 A JP H08243751A JP 7841695 A JP7841695 A JP 7841695A JP 7841695 A JP7841695 A JP 7841695A JP H08243751 A JPH08243751 A JP H08243751A
- Authority
- JP
- Japan
- Prior art keywords
- partial
- welding
- full
- groove
- speed
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、フルペネ部、パーシャ
ル部を交互に有し、かつフルペネ部とパーシャル部の開
先形状を連続的につなぐ開先漸変部を有する板厚２８〜
６０ｍｍの厚鋼板の角継手１パスサブマージアーク溶接
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 plate thickness 28 to 28 having a full-pene part and a partial part alternately, and a groove gradually changing part for continuously connecting the groove shapes of the full-pene part and the partial part.
The present invention relates to a one-pass submerged arc welding method for corner joints of 60 mm thick steel plates.
【０００２】[0002]
【従来の技術】厚板のボックス柱角継手溶接は、従来Ｃ
Ｏ2 アーク溶接で下盛り溶接をした後サブマージアーク
溶接を行うのが通常であったが、最近では板厚６０ｍｍ
程度までは２電極１層サブマージアーク溶接が一般に行
われている。ボックス柱の形状は、図３（ａ）の正面
図、（ｂ）の側面図に示すように２枚の縦板スキンプレ
ート１、２枚の横板スキンプレート２を箱形に組立て、
梁を取り付ける部分（仕口部）の内部に補強材としてダ
イヤフラム３が取り付けられている。2. Description of the Related Art Conventionally, thick box box column corner joints have been welded with C
It was usual to perform submerged arc welding after underlaying welding with O 2 arc welding, but recently, plate thickness 60 mm
Up to a point, two-electrode single-layer submerged arc welding is generally performed. As for the shape of the box pillar, as shown in the front view of FIG. 3A and the side view of FIG. 3B, two vertical plate skin plates 1 and two horizontal plate skin plates 2 are assembled in a box shape,
A diaphragm 3 is attached as a reinforcing material inside the portion (portion) to which the beam is attached.
【０００３】このボックス柱は仮組みの後、スキンプレ
ート１，２の合わせ部、すなわち箱形の角の部分を突き
合わせ溶接して中空の柱を作るもので、この角継手部の
開先形状は、板厚により図４（ａ），（ｂ）にそれぞれ
示すレ型またはＹ型が用いられる。一般に、板厚４０ｍ
ｍ程度までは図４（ａ）に示す横板スキンプレート２の
開先面のみに開先加工を施したレ型開先を、板厚４０ｍ
ｍ以上では図４（ｂ）に示す縦板スキンプレート１、横
板スキンプレート２の双方の開先面に開先加工を施した
Ｙ型開先を用いている。なお図４において４ａは開先深
さ、５は裏当て金である。After the temporary assembly, the box pillar is a hollow pillar formed by butt-welding the joint portions of the skin plates 1 and 2, that is, the box-shaped corner portions, and the groove shape of the corner joint portion is , Or the Y-shape shown in FIGS. 4A and 4B, depending on the plate thickness. Generally, plate thickness 40m
Up to about m, a die groove in which only the groove surface of the horizontal plate skin plate 2 shown in FIG.
In the case of m or more, the Y-shaped groove is used in which the groove surfaces of both the vertical plate skin plate 1 and the horizontal plate skin plate 2 shown in FIG. In FIG. 4, 4a is a groove depth, and 5 is a backing metal.
【０００４】図５（ａ），（ｂ）はそれぞれ図４
（ａ），（ｂ）の開先を用いて溶接した状態を示し、溶
接金属６はスキンプレート２の板厚全域にわたってい
る。しかしながら、最近、角継手溶接の高能率化を目的
に、全溶接長を図５（ａ），（ｂ）に示すような完全溶
込みとするオールフルペネ溶接ではなく、高強度を必要
とする仕口部周辺のみフルペネ溶接を行い、他の部分は
図６（ａ），（ｂ）に示すような板厚の半分ないし２／
３までの開先深さ４ｂの開先形状とし、図７（ａ），
（ｂ）に示すような板厚の半分ないし２／３以上の溶込
みとするパーシャル溶接を併用する溶接方法が採用され
ている。図８、図９において、それぞれ（ａ），（ｂ）
はパーシャル部、フルペネ部の開先を示す正面図、
（ｃ）は漸変部の側面図である。この場合、図８に示す
ように開先深さ４ａ，４ｂおよび開先角度７ａ，７ｂを
変え、開先幅８ａを一定にした開先形状と、図９に示す
ように開先深さ４ａ，４ｂおよび開先幅８ａ，８ｂを変
え、開先角度７ａを一定にした開先形状があるが、いず
れの方法においてもフルペネ、パーシャルの開先形状を
漸変部９により連続的に滑らかにつないでいる。しかし
ながら、いずれの場合も、フルペネ部、パーシャル部で
は開先形状が異なるため開先断面積が異なり、同一溶接
条件では対応が不可能となり、条件の変更が必要とな
る。FIGS. 5A and 5B are respectively shown in FIG.
It shows a state of welding using the groove of (a) and (b), and the weld metal 6 extends over the entire thickness of the skin plate 2. However, recently, for the purpose of improving the efficiency of corner joint welding, not all full-penetration welding in which the total welding length is completely penetrated as shown in FIGS. 5 (a) and 5 (b), but a joint requiring high strength. Full penetration welding is performed only on the periphery of the part, and the other parts are half or 2/1/2 of the plate thickness as shown in FIGS. 6 (a) and 6 (b).
3 (3) with a groove shape having a groove depth of 4b up to 3.
As shown in (b), a welding method is employed in which partial welding with half or two-thirds or more of the plate thickness is used together with partial welding. 8 and 9, (a) and (b), respectively.
Is a front view showing the groove of the partial part and the full pene part,
(C) is a side view of a gradual change part. In this case, the groove depths 4a and 4b and the groove angles 7a and 7b are changed as shown in FIG. 8 to make the groove width 8a constant, and the groove depth 4a as shown in FIG. , 4b and groove widths 8a, 8b are changed, and there is a groove shape in which the groove angle 7a is constant. In any method, the groove shape of the full penes and partials is continuously smoothed by the gradually changing portion 9. It is connected. However, in any case, since the groove shape is different in the full penetration portion and the partial portion, the groove cross-sectional area is different, and it is impossible to cope with the same welding condition, and it is necessary to change the condition.
【０００５】同一溶接線上での溶接条件の変更として
は、特開平４−９５２５３号公報等に開示されているよ
うに、片面溶接等の終端処理方法に関しては行われてき
たが、これらは溶接終了時に行われる処理に関するもの
であり、溶接途中で繰り返し行われる条件変更に関して
は検討がなされていないのが実状である。そこで本発明
者らは、フルペネ→パーシャル、パーシャル→フルペネ
の切り替え漸変部における適正溶接条件について検討
し、以下の知見を得た。As a modification of the welding conditions on the same welding line, as disclosed in Japanese Patent Laid-Open No. 4-95253, there has been made a termination treatment method such as single-sided welding. It is related to the treatments sometimes performed, and the fact is that no consideration has been given to repeated condition changes during welding. Therefore, the present inventors have examined the proper welding conditions in the switching gradually changing portion between full penetration → partial and partial penetration → full penetration, and have obtained the following findings.
【０００６】（１）溶接速度を急激に変化させた場合、
パーシャル部→フルペネ部では速度が急激に遅くなるた
め、速度変更位置のビードは溶着量が多くなり、図１０
（ａ）に示すごとくビード幅が大きくなり、ビード中央
部が盛り上がる。 （２）溶接速度を急激に変化させた場合、フルペネ部→
パーシャル部では速度が急激に速くなるため、速度変更
位置のビードは溶着量が足りなくなり、ビード外観の中
央部にクレータができる。 （３）溶接電流を急激に変化させた場合、パーシャル部
→フルペネ部では電流が急激に大きくなるため、電流変
更位置のビードは溶着量が多くなり図１０（ａ）に示す
ごとくビード幅が大きくなり、ビード中央部が盛り上が
る。 （４）溶接電流を急激に変化させた場合、フルペネ部→
パーシャル部では電流が急激に小さくなるため、電流変
更位置のビードは溶着量が足りなくなり図１０（ｂ）に
示すごとく余盛不足となり、開先残りが起こる場合があ
る。(1) When the welding speed is rapidly changed,
Since the speed of the partial part → the full pene part is drastically reduced, the bead at the speed changing position has a large amount of welding, and FIG.
As shown in (a), the bead width increases and the bead center portion rises. (2) When the welding speed is suddenly changed,
Since the speed at the partial part increases sharply, the bead at the speed changing position has insufficient welding amount, and a crater is formed in the center part of the bead appearance. (3) When the welding current is drastically changed, the current drastically increases from the partial portion to the full penetration portion, so that the bead at the current changing position has a large welding amount and the bead width is large as shown in FIG. 10 (a). And the center of the bead rises. (4) When the welding current is drastically changed, the full penetration →
Since the current rapidly decreases in the partial portion, the bead at the current changing position is insufficient in the amount of welding, resulting in insufficient swelling as shown in FIG.
【０００７】[0007]
【発明が解決しようとする課題】本発明は上述のごと
く、フルペネ部、パーシャル部を交互に有する厚鋼板の
ボックス柱角継手１パスサブマージアーク溶接にさい
し、フルペネ部とパーシャル部の開先形状を連続的につ
なぐ開先漸変部の良好なビード形状が得られる溶接条件
を提供することを目的とするものである。SUMMARY OF THE INVENTION As described above, according to the present invention, in the case of box column corner joint one-pass submerged arc welding of thick steel plates having alternating full penetrating and partial parts, the groove shape of the full penetrating part and the partial part is formed. It is an object of the present invention to provide welding conditions for obtaining a good bead shape of a groove gradually changing portion which is continuously connected.
【０００８】[0008]
【課題を解決するための手段】本発明の要旨とするとこ
ろは、完全溶込みを行うフルペネ部と開先深さが板厚の
１／２ないし２／３のパーシャル部を交互に有し、かつ
フルペネ部とパーシャル部の開先形状を連続的につなぐ
開先漸変部を有する板厚２８〜６０ｍｍの厚鋼板の角継
手１パスサブマージアーク溶接方法において、フルペネ
部、パーシャル部の溶接速度をそれぞれＳF ，ＳP 、１
ステップの速度変更の設定値をｓとしたとき、フルペ
ネ、パーシャル切り替え漸変部における溶接速度を下記
（１）式により求められるステップ数ｎに段階的に変化
させることを特徴とし、また、フルペネ部、パーシャル
部の溶接電流をそれぞれＩF ，ＩP ，１ステップの電流
変化値をｉとしたとき、フルペネ、パーシャルの切り替
え漸変部における溶接電流を下記（２）式により求めら
れるステップ数ｎに段階的に変化させることを特徴とす
る請求項１記載の角継手１パスサブマージアーク溶接方
法にある。 ｎ＝（ＳP −ＳF ）／ｓ ・・・（１） ｎ＝（ＩF −ＳP ）／ｉ ・・・（２）SUMMARY OF THE INVENTION The gist of the present invention is that a full penetration portion for complete penetration and a partial portion having a groove depth of 1/2 to 2/3 of the plate thickness are alternately provided. In addition, in the one-pass submerged arc welding method for a corner joint of a thick steel plate having a groove thickness of 28 to 60 mm, which has a groove gradually changing portion that continuously connects the groove shapes of the full-penal portion and the partial portion, the welding speed of the full-penal portion and the partial portion is changed. S F , S P , 1 respectively
When the set value for step speed change is set to s, the welding speed in the full-penetration / partial switching gradually changing part is changed stepwise to the number of steps n obtained by the following equation (1). , Where the welding current in the partial portion is I F , I P , and the current change value in one step is i, the welding current in the full-penetration or partial switching gradually changing portion is set to the number of steps n obtained by the following equation (2). The method according to claim 1, wherein the step is changed stepwise. n = (S P -S F) / s ··· (1) n = (I F -S P) / i ··· (2)
【０００９】[0009]
【作用】以下に、本発明について詳細に説明する。本発
明においては、フルペネ、パーシャル切り替え漸変部に
おける速度を図１に示すように段階的に変化させること
が必要である。この場合、パーシャル速度ＳP からフル
ペネ速度ＳF に速度変化させる過程（速度ＳF からＳP
への変化も同様）において、溶接機の１ステップにおけ
る速度変更の値ｓを設定し、以下の（１）式によりステ
ップ数ｎが決まる。 ｎ＝（ＳP −ＳF ）／ｓ ・・・（１）The present invention will be described in detail below. In the present invention, it is necessary to gradually change the speed in the full-peneer and partial switching gradually changing portions as shown in FIG. In this case, the process of changing the speed from the partial speed S P to the full penetration speed S F (speed S F to S P
Similarly, the value s of speed change in one step of the welding machine is set, and the number of steps n is determined by the following equation (1). n = (S P -S F) / s ··· (1)
【００１０】次に、切り替えに必要な距離Ｄを設定し、
以下の（３）式により１ステップにおける移動距離ｄを
決定するものである。 ｄ＝Ｄ／ｎ ・・・（３）Next, the distance D required for switching is set,
The moving distance d in one step is determined by the following equation (3). d = D / n (3)
【００１１】上記で得られた速度変更条件により段階的
に速度を変更することによりパーシャル→フルペネ、フ
ルペネ→パーシャル漸変部において、良好なビード形状
が得られる。先にも述べたように１ステップで速度を変
化させた場合、パーシャル→フルペネでは速度が急激に
遅くなるため、速度変更位置のビードは溶着量が多くな
り図１０（ａ）に示すごとくビード幅が大きくなり、ビ
ード中央部が盛り上がり、フルペネ→パーシャルでは速
度が急激に速くなるため、速度変更位置のビードは溶着
量が足りなくなり、ビード外観の中央部にクレータがで
きるのを改善できる。By changing the speed stepwise under the speed changing conditions obtained above, a good bead shape can be obtained in the partial → full penne or full penne → partial gradually changing portion. As described above, when the speed is changed in one step, the speed decreases drastically from partial to full penetration, so the bead at the speed change position has a large amount of welding and the bead width as shown in FIG. 10 (a). Is increased, the center of the bead rises, and the speed increases rapidly from full penetration to partial, so the bead at the speed change position lacks the amount of welding, and it is possible to improve the formation of craters in the center of the bead appearance.
【００１２】次に、フルペネ、パーシャル切り替え漸変
部における電流は、図２に示すように段階的に変化させ
ることが必要である。この場合も速度変化と同様、パー
シャル電流値ＩP からフルペネ電流値ＩF に電流値を変
化させる過程（電流値ＩF から電流値ＩP への変化も同
様）において、溶接機の電流変更速度を実測する必要が
あり、これにより１ステップにおける変更速度＝（１ス
テップの電流変化値ｉ）／（１ステップの電流調整時間
ｔ1 ）が決まり、１ステップの電流調整時間ｔ1 を設定
することにより１ステップの電流変化値ｉが決まり、以
下の（２）式によりステップ数ｎが決まる。 ｎ＝（ＩF −ＩP ）／ｉ ・・・（２）Next, it is necessary to gradually change the current in the full-peneer and partial switching gradually changing portions as shown in FIG. Also in this case, like the speed change, in the process of changing the current value from the partial current value I P to the full penetration current value I F (the same applies to the change from the current value I F to the current value I P ), the current changing speed of the welding machine must actually measured, thereby (current change value of 1 step i) change rate = at 1 step / (1 step current adjustment time t 1) determines and sets the current adjustment time t 1 of one step that Thus, the current change value i for one step is determined, and the number of steps n is determined by the following equation (2). n = (I F −I P ) / i (2)
【００１３】次に、切り替え時間Ｔを以下の（４）式に
より求める。 Ｔ＝２×Ｄ／（ＳF ＋ＳP ） ・・・（４）Next, the switching time T is calculated by the following equation (4). T = 2 × D / (S F + S P ) ... (4)
【００１４】以下の（５）式により１ステップにおける
電流変化停止時間ｔ2 を決定するものである。 ｔ2 ＝（Ｔ／ｎ）−ｔ1 ・・・（５）The current change stop time t 2 in one step is determined by the following equation (5). t 2 = (T / n) -t 1 (5)
【００１５】上記で得られた電流変更条件により段階的
に電流値を変更することにより、パーシャル→フルペ
ネ、フルペネ→パーシャル漸変部において良好なビード
形状が得られる。先にも述べたように１ステップで電流
値を変化させた場合、パーシャル→フルペネでは電流が
急激に大きくなるため、電流変更位置のビードは溶着量
が多くなり図１０（ａ）に示すごとくビード幅が大きく
なり、ビード中央部が盛り上がり、またフルペネ→パー
シャルでは電流が急激に小さくなるため、電流変更位置
のビードは溶着量が足りなくなり図１０（ｂ）に示すご
とく余盛不足となり、開先残りが起こる場合があるのを
改善できる。By changing the current value stepwise according to the current changing conditions obtained above, a good bead shape can be obtained in the partial → full penne or the full penne → partial gradual portion. As described above, when the current value is changed in one step, the current abruptly increases from partial to full penetration, so the bead at the current changing position has a large amount of welding, and the bead is as shown in FIG. 10 (a). Since the width becomes large, the center of the bead rises, and the current decreases sharply from full penetration to partial, the bead at the current changing position lacks the amount of welding and becomes insufficient as shown in Fig. 10 (b). It can improve that the rest may occur.
【００１６】ところで、本発明溶接方法はボックス柱角
継手１パスサブマージアーク溶接方法であり、溶接材料
としてフラックスおよび電極ワイヤを必要とするもので
あるが、これら溶接材料に関しては、目的に応じた適正
な溶接金属を得ることのできるものであればそれらの組
成については特に限定されるものではない。By the way, the welding method of the present invention is a box column corner joint one-pass submerged arc welding method, which requires a flux and an electrode wire as welding materials. The composition of the weld metal is not particularly limited as long as it is possible to obtain such weld metal.
【００１７】すなわち、フラックスとしては、ＳｉＯ
2 ，Ａｌ2 Ｏ3 ，ＴｉＯ2 ，ＭｎＯ，ＭｇＯ等の金属酸
化物、ＣａＦ2 ，ＭｇＦ2 等の金属弗化物、ＣａＣＯ3
等の金属炭酸塩、Ｓｉ，Ｍｎ等の脱酸剤、Ｎｉ，Ｍｏ等
の合金剤あるいは鉄粉を適宜配合して作製されたフラッ
クスを用いればよい。That is, as the flux, SiO
2 , metal oxides such as Al 2 O 3 , TiO 2 , MnO and MgO, metal fluorides such as CaF 2 and MgF 2 , CaCO 3
A flux prepared by appropriately mixing a metal carbonate such as the above, a deoxidizing agent such as Si or Mn, an alloying agent such as Ni or Mo, or iron powder may be used.
【００１８】電極ワイヤは、フラックス組成との関連で
選択されるものであるが、Ｍｎ：０．３〜３．５％，Ｍ
ｏ：０．１〜１．０％，Ｎｉ：０．５〜５．０％の一種
または二種以上を含有するワイヤが強度および靱性を確
保する上で好ましい。以上、本発明について詳述した
が、本発明の効果をさらに明確にするため、以下実施例
について述べる。Although the electrode wire is selected in relation to the flux composition, Mn: 0.3 to 3.5%, M
A wire containing one or two or more of o: 0.1 to 1.0% and Ni: 0.5 to 5.0% is preferable in order to secure strength and toughness. Although the present invention has been described in detail above, examples will be described below in order to further clarify the effects of the present invention.
【００１９】[0019]
【実施例】表１に示す鋼板に対し、表２のワイヤ、表３
のフラックスを用いて、ボックス柱角継手１パスサブマ
ージアーク溶接を行った。表３のフラックスは、原料粉
を水ガラスを用いて造粒した後、４００℃×１２０ｍｉ
ｎの条件によりロータリーキルンで焼成した後、１２×
１００メッシュで整粒したボンドフラックスを用いた。EXAMPLE For the steel sheet shown in Table 1, the wires shown in Table 2 and Table 3 were used.
The box column corner joint 1-pass submerged arc welding was carried out using the flux of. The flux shown in Table 3 was obtained by granulating the raw material powder using water glass and then 400 ° C. × 120 mi
12 × after firing in a rotary kiln according to condition n
A bond flux whose particle size was adjusted to 100 mesh was used.
【００２０】[0020]
【表１】 [Table 1]
【００２１】[0021]
【表２】 [Table 2]
【００２２】[0022]
【表３】 [Table 3]
【００２３】本発明実施例および比較例における溶接条
件および結果をそれぞれ表４、表５に示す。本発明例の
Ｎｏ．１は速度のみを、Ｎｏ．２〜４は速度、電流値を
段階的に変化させた例であり、比較例のＮｏ．５は速度
のみを、Ｎｏ．６〜８は速度、電流値を急激に変化させ
た例である。本発明例であるＮｏ．１〜４は本発明の効
果によりいずれも良好な溶接ビードを得ることができた
が、一方、比較例のＮｏ．５〜８は溶接結果の欄に記入
されているように、満足できるビード形状は得られなか
った。なお、表４、表５における区分のＰＰはパーシャ
ル部、ＦＰはフルペネ部であり、開先形状のθは開先角
度、Ｒはルートフェースである。Welding conditions and results in Examples of the present invention and Comparative Examples are shown in Tables 4 and 5, respectively. No. 1 of the present invention example. No. 1 shows only speed, No. Nos. 2 to 4 are examples in which the speed and the current value were changed step by step. No. 5 shows only speed, 6 to 8 are examples in which the speed and the current value are rapidly changed. No. 1, which is an example of the present invention. Nos. 1 to 4 were able to obtain good weld beads due to the effect of the present invention, while No. 1 of the comparative example. As for Nos. 5-8, as described in the column of welding result, a satisfactory bead shape was not obtained. In Tables 4 and 5, PP is a partial portion, FP is a full penetration portion, groove shape θ is a groove angle, and R is a root face.
【００２４】[0024]
【表４】 [Table 4]
【００２５】[0025]
【表５】 [Table 5]
【００２６】[0026]
【発明の効果】本発明サブマージアーク溶接方法を用い
ることにより、フルペネ部、パーシャル部を交互に有
し、かつ開先漸変部を有する厚鋼板の１パス大入熱溶接
において、ビード形状が良好な高能率溶接が可能とな
り、その効果は非常に大きい。EFFECTS OF THE INVENTION By using the submerged arc welding method of the present invention, the bead shape is good in the one-pass large heat input welding of the thick steel plate having the full penetrating portion and the partial portion alternately and the groove gradually changing portion. It enables highly efficient welding and its effect is very large.
【図１】本発明による溶接速度変化を説明するグラフFIG. 1 is a graph illustrating changes in welding speed according to the present invention.
【図２】本発明による溶接電流値変化を説明するグラフFIG. 2 is a graph illustrating a welding current value change according to the present invention.
【図３】（ａ），（ｂ）はボックス柱のそれぞれ正面図
および側面図3A and 3B are a front view and a side view, respectively, of a box pillar.
【図４】フルペネ開先形状を示す図で（ａ）はレ型開
先、（ｂ）はＹ型開先4A and 4B are views showing a shape of a full-penetration groove, where FIG. 4A is a concave groove and FIG. 4B is a Y groove.
【図５】フルペネ溶接部断面形状を示す図で（ａ），
（ｂ）はそれぞれ図４（ａ），（ｂ）の開先に対応す
る。FIG. 5 is a diagram showing a cross-sectional shape of a full-pene welded portion (a),
4B corresponds to the groove in FIGS. 4A and 4B, respectively.
【図６】パーシャル開先形状を示す図で（ａ）はレ型開
先、（ｂ）はＹ型開先6A and 6B are views showing a shape of a partial groove, wherein FIG. 6A is a die groove, and FIG. 6B is a Y groove.
【図７】パーシャル溶接部断面形状を示す図で（ａ），
（ｂ）はそれぞれ図６（ａ），（ｂ）の開先に対応す
る。FIG. 7 is a view showing a sectional shape of a partial weld portion (a),
6B corresponds to the groove in FIGS. 6A and 6B, respectively.
【図８】（ａ），（ｂ），（ｃ）はそれぞれパーシャル
部開先形状、フルペネ部開先形状および開先漸変部を示
す説明図8A, 8B, and 8C are explanatory views showing a groove shape of a partial portion, a groove shape of a full-penetration portion, and a groove gradually changing portion, respectively.
【図９】（ａ），（ｂ），（ｃ）はそれぞれパーシャル
部開先形状、フルペネ部開先形状および開先漸変部を示
す説明図9 (a), (b), and (c) are explanatory views showing a groove shape of a partial portion, a groove shape of a full-penetration portion, and a groove gradually changing portion, respectively.
【図１０】（ａ），（ｂ）はそれぞれ漸変部溶接欠陥を
示す模式図10 (a) and 10 (b) are schematic views showing welding defects in the gradual change portion.
１ 縦板スキンプレート ２ 横板スキンプレート ３ ダイヤフラム ４ａ フルペネ開先深さ ４ｂ パーシャル開先深さ ５ 裏当金 ６ 溶接金属 ７ａ，７ｂ 開先角度 ８ａ，８ｂ 開先幅 ９ 開先漸変部 1 Vertical plate skin plate 2 Horizontal plate skin plate 3 Diaphragm 4a Full penetration groove depth 4b Partial groove depth 5 Backing metal 6 Weld metal 7a, 7b Groove angle 8a, 8b Groove width 9 Groove part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 南部 幹夫 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikio Minami 20-1 Shintomi, Futtsu City, Chiba Shin Nippon Steel Co., Ltd.
Claims (2)
が板厚の１／２ないし２／３のパーシャル部を交互に有
し、かつフルペネ部とパーシャル部の開先形状を連続的
につなぐ開先漸変部を有する板厚２８〜６０ｍｍの厚鋼
板の角継手１パスサブマージアーク溶接方法において、
フルペネ部、パーシャル部の溶接速度をそれぞれＳF ，
ＳP 、１ステップの速度変更の設定値をｓとしたとき、
フルペネ、パーシャル切り替え漸変部における溶接速度
を下記（１）式により求められるステップ数ｎに段階的
に変化させることを特徴とする角継手１パスサブマージ
アーク溶接方法。 ｎ＝（ＳP −ＳF ）／ｓ ・・・（１）1. A full penetration portion for complete penetration and a partial portion having a groove depth of ½ to ⅔ of the plate thickness are alternately arranged, and the groove shapes of the full penetration portion and the partial portion are continuous. In the method of square joint one-pass submerged arc welding of a thick steel plate having a plate thickness of 28 to 60 mm having a gradually changing groove to be connected to
Furupene portion, the welding speed of the partial portions respectively S F,
S P , When the set value for speed change of 1 step is s,
A corner joint one-pass submerged arc welding method characterized in that a welding speed in a full-peneer, a partial switching gradually changing portion is gradually changed to a step number n obtained by the following equation (1). n = (S P -S F) / s ··· (1)
それぞれＩF ，ＩP、１ステップの電流変化値をｉとし
たとき、フルペネ、パーシャルの切り替え漸変部におけ
る溶接電流を下記（２）式により求められるステップ数
ｎに段階的に変化させることを特徴とする請求項１記載
の角継手１パスサブマージアーク溶接方法。 ｎ＝（ＩF −ＩP ）／ｉ ・・・（２）2. When the welding currents in the full-penne part and the partial part are respectively I F , I P and the current change value in one step is i, the welding current in the gradually changing part between the full-penne part and the partial is expressed by the following formula (2). The method of claim 1, wherein the step number is changed stepwise to the step number "n". n = (I F −I P ) / i (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7841695A JPH08243751A (en) | 1995-03-10 | 1995-03-10 | One pass submerged arc welding method for corner joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7841695A JPH08243751A (en) | 1995-03-10 | 1995-03-10 | One pass submerged arc welding method for corner joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08243751A true JPH08243751A (en) | 1996-09-24 |
Family
ID=13661445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7841695A Withdrawn JPH08243751A (en) | 1995-03-10 | 1995-03-10 | One pass submerged arc welding method for corner joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08243751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007144997A1 (en) * | 2006-06-14 | 2007-12-21 | Panasonic Corporation | Method of controlling arc welding |
| WO2014156115A1 (en) * | 2013-03-26 | 2014-10-02 | パナソニック株式会社 | Arc welding control method and arc welding device |
-
1995
- 1995-03-10 JP JP7841695A patent/JPH08243751A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007144997A1 (en) * | 2006-06-14 | 2007-12-21 | Panasonic Corporation | Method of controlling arc welding |
| US8742291B2 (en) | 2006-06-14 | 2014-06-03 | Panasonic Corporation | Method of controlling arc welding in a tandem arc welding system |
| WO2014156115A1 (en) * | 2013-03-26 | 2014-10-02 | パナソニック株式会社 | Arc welding control method and arc welding device |
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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: 20020604 |