JPS6116230B2 - - Google Patents
Info
- Publication number
- JPS6116230B2 JPS6116230B2 JP13497481A JP13497481A JPS6116230B2 JP S6116230 B2 JPS6116230 B2 JP S6116230B2 JP 13497481 A JP13497481 A JP 13497481A JP 13497481 A JP13497481 A JP 13497481A JP S6116230 B2 JPS6116230 B2 JP S6116230B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- torch
- vertical member
- vertical
- sides
- 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
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
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】
明は立向き終端まわし溶接方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vertical end welding method.
第１図に示す如く、被溶接立部材１に立部材２
を直交配置で当接して、この当接部の両側を下方
から上方に隅肉溶接して取付けることは、例えば
橋梁桁構において被溶接立部材１である桁フラン
ジに、立部材２である垂直ステイフナを取付ける
場合等重工、造船の組立て工程で数多く行なわれ
ている。 As shown in FIG. 1, a vertical member to be welded 1 a vertical member 2
In a bridge girder structure, for example, in a bridge girder structure, the vertical member 2, which is the vertical member 2, is attached to the girder flange which is the vertical member 1 to be welded in a bridge girder structure. This is often done in the assembly process of heavy industry and shipbuilding, such as when attaching a stiffener.
この場合の立向き隅肉溶接は手溶接でなされて
いるが、溶接結果はもつぱら作業者の技量に支配
されている。特に立部材２の上端部３即ち溶接終
端部では、溶接の熱がエツジ部３ａに集中しやす
く、溶鋼がアークで吹きとばされて、エツジ部３
ａにアンダカツトが生じやすい。アンダカツトは
外観が悪いばかりでなく、疲労強度上も問題にな
るものである。このため作業者は上進立向き溶接
後、エツジ部３ａ付近で一度溶接を止めてしばら
く待つたり、溶接電流を調整し直したりしなけれ
ばならない。また上端部３の溶接中にはアークを
切つたり、出したりを繰り返したりまた数パスに
分けたりして溶接している。しかしながら上端部
３即ち溶接終端部でアンダカツトのない溶接部を
得ることは極めて難かしい。 Vertical fillet welding in this case is done by hand, but the welding results are entirely dependent on the skill of the worker. Particularly at the upper end 3 of the upright member 2, that is, at the welding end, the heat of welding tends to concentrate on the edge 3a, and the molten steel is blown away by the arc, causing the edge 3
Undercuts are likely to occur in a. Undercuts not only look bad, but also pose problems in terms of fatigue strength. For this reason, the operator must stop welding near the edge portion 3a and wait for a while after upward welding, or readjust the welding current. Further, during welding of the upper end portion 3, welding is performed by repeatedly cutting and releasing the arc, or by dividing it into several passes. However, it is extremely difficult to obtain a weld without undercuts at the upper end 3, ie, at the weld end.
この発明は、上記のような実情にかんがみてな
されたものであつて、その目的はアンダカツトの
ない外観の良好な溶接ビートが得られる立向き終
端まわし溶接方法を提供しようとするものであ
る。 The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a vertical end turn welding method that provides a weld bead with a good appearance without undercuts.
この立向き終端まわし溶接方法の特徴は、被溶
接立部材に該立部材より高さの低い立部材を直交
配置で当接し、この立部材の両側にトーチを対向
させて配設し、このトーチによつて当接部の両側
を下方から上方に溶接電流140A±20A、溶接電
圧20V±2V及び溶接速度10cm／分±１cm／分の
MIG溶接により隅肉溶接し、上記立部材の上端部
に達した時点で上記トーチの速度を上げると共に
溶接電圧を10％程度上げて該トーチを両側から上
記立部材の板厚方向に突つ込みトーチを接近させ
て一定時間保持し、その後上記トーチを引つ込ま
せてからアークを切ることである。 The characteristics of this vertical end turn welding method are that a vertical member having a lower height than the vertical member to be welded is brought into contact with the vertical member in an orthogonal arrangement, and a torch is placed facing each other on both sides of the vertical member. Welding current 140A ± 20A, welding voltage 20V ± 2V, and welding speed 10cm/min ± 1cm/min from below to above on both sides of the contact area.
Fillet welding is performed by MIG welding, and when the upper end of the vertical member is reached, the speed of the torch is increased and the welding voltage is increased by about 10%, and the torch is plunged into the thickness direction of the vertical member from both sides. The process involves bringing the torch close and holding it for a certain period of time, then retracting the torch and cutting the arc.
以下この発明方法の一実施例を溶接ロボツトを
用いて行なつた場合について第２図〜第４図によ
り説明する。 Hereinafter, an embodiment of the method of the present invention in which a welding robot is used will be described with reference to FIGS. 2 to 4.
溶接ロボツトの動きの中、この発明方法を実施
するのに必要なトーチ４の動きは第２図ａ，ｂに
示す如く動かし得るようになつている。第２図ａ
は、第１図を上から見た状態でトーチの水平面内
での動きを示すものであり、第２図ｂは第１図を
側方から見た状態で、トーチの垂直面内での動き
を示すものである。θはトーチ４の水平面内の回
動で、被溶接立部材１の面を基準として示してあ
る。は垂直面内の回動で、水平面を基準として
示してある。Ｚはトーチ４の上下方向の動き、Ｒ
は立部材２に垂直な板厚方向の動きである。 As the welding robot moves, the torch 4 necessary to carry out the method of the present invention can be moved as shown in FIGS. 2a and 2b. Figure 2a
Figure 2b shows the movement of the torch in the horizontal plane when Figure 1 is viewed from above, and Figure 2b shows the movement of the torch in the vertical plane when Figure 1 is viewed from the side. This shows that. θ is the rotation of the torch 4 in the horizontal plane, and is shown with the surface of the vertical member 1 to be welded as a reference. is the rotation in the vertical plane and is shown with respect to the horizontal plane. Z is the vertical movement of the torch 4, R is
is the movement in the thickness direction perpendicular to the upright member 2.
橋梁桁構の被溶接立部材１である桁フランジ
に、立部材２である垂直ステイフナ（板厚14mm）
を直交配置で当接して、この当接部の両側を下方
から上方に溶接脚長８mmで隅肉溶接するもので、
溶接はMIG溶接（ガス量25／分、Ar80％、
CO220％）で行なつた。溶接条件は溶接電流ＮA
（140A）、溶接電圧ＮV（20V、定常時）で、溶接
速度（Ｚ軸方向）10cm／分（定常時）である。 A vertical stiffener (plate thickness 14 mm), which is the vertical member 2, is attached to the girder flange, which is the vertical member 1 to be welded in the bridge girder structure.
are brought into contact in an orthogonal arrangement, and fillet welding is performed from below to above on both sides of this contact part with a weld leg length of 8 mm.
Welding is MIG welding (gas volume 25/min, Ar80%,
CO 2 (20%). Welding conditions are welding current N A
(140A), welding voltage N V (20V, steady state), welding speed (Z-axis direction) 10 cm/min (steady state).
溶接スタート時のトーチ４の水平角θ１は50
゜、垂直角１は10゜としてある。水平角θ１を
50゜としたのは、ウイービング溶接時に被溶接立
部材１にアンダカツトが生ずるのを避けるため離
し気味にしていることによる。また垂直角１を
10゜としたのはトーチホルダが底面に当るのを避
けるためである。この状態でアークをスタート
し、スタート後垂直角を０゜に戻して、ウイー
ビングを開始する。そして立部材２の上端部３か
ら１mm下つた点Ａに達するまで、ウイービングを
しながら上向き隅肉溶接を行なう。 Horizontal angle θ 1 of torch 4 at the start of welding is 50
°, and vertical angle 1 is assumed to be 10°. Horizontal angle θ 1
The reason why the angle is set at 50° is that the angle is set slightly apart to avoid undercuts from occurring in the vertical member 1 to be welded during weaving welding. Also, the vertical angle 1
The reason for setting it at 10° is to prevent the torch holder from hitting the bottom. In this state, the arc is started, and after the start, the vertical angle is returned to 0° and weaving is started. Then, upward fillet welding is performed while weaving until the point A, which is 1 mm below the upper end 3 of the upright member 2, is reached.
Ａ点に達したらウイービングを停止する。ウイ
ービングを停止することによりエツジ部３ａにア
ンダカツトが生ずるおそれがあるが、これは後述
するトーチ４の引つ込み下降過程で埋められる。
このアンダカツトの発生をできるだけ少なくする
ため、ウイービングの停止位置を上端部３より１
mm下のＡ点とした。 Stop weaving when point A is reached. Although there is a possibility that an undercut may occur in the edge portion 3a by stopping the weaving, this will be filled in the process of retracting and lowering the torch 4, which will be described later.
In order to reduce the occurrence of this undercut as much as possible, the weaving stop position is set at one point from the upper end 3.
It was set as point A below mm.
上端部３を通過するＢ点に達したら、トーチ４
の上昇速度を40cm／分に上げる共に溶接電圧をＨ
V（22V）に上げ且つトーチ４の水平角θをθ２
（45゜）にして、両側から板厚方向に板厚の1/2の
距離R1（７mm）突つ込んで、上端部３から４mm
の点Ｃで、一定時間T1（２秒）保持する。ここ
で溶接電圧を上げたのは被溶接立部材１の表面に
凹みができるのを防止するためである。またトー
チの水平角θをθ２（45゜）にすることにより、
板厚方向に突つ込む際に溶接ロボツトのアーム部
が立部材２に当るのを逃げている。こうしてトー
チ４，４を近接させて一定時間T1を保持するこ
とにより、アークの引き合いを利用して上端部３
即ち溶接終端部に溶鋼をためる。 When reaching point B passing through the upper end 3, the torch 4
Increase the rising speed to 40cm/min and increase the welding voltage to H.
V (22V) and set the horizontal angle θ of torch 4 to θ 2
(45°), push it in from both sides in the thickness direction a distance R 1 (7mm) of 1/2 of the board thickness, and insert it 4mm from the top edge 3.
Hold at point C for a certain period of time T 1 (2 seconds). The reason why the welding voltage was increased here is to prevent the formation of dents on the surface of the vertical member 1 to be welded. Also, by setting the horizontal angle θ of the torch to θ 2 (45°),
The arm part of the welding robot avoids hitting the vertical member 2 when thrusting in the thickness direction of the plate. In this way, by bringing the torches 4, 4 close together and maintaining the constant time T 1 , the upper end 3
That is, molten steel accumulates at the weld end.
その後、トーチ４，４を板厚の1/2に脚長分を
加えた距離R2引つ込ませると共に下降させて、
Ｄ点で時間T2（0.5秒）保持してからアークを切
つて溶接作業を終了する。前述のようにエツジ部
３ａにアンダカツトが生じた場合にも、この引つ
込み下降過程で埋められ、さらにビード形状をふ
つくらさせることができる。 After that, the torches 4, 4 are retracted by a distance R2 equal to 1/2 of the board thickness plus the length of the legs, and lowered.
After holding at point D for a time T 2 (0.5 seconds), the arc is cut and the welding work is completed. Even if an undercut occurs in the edge portion 3a as described above, it is filled in during this retracting and lowering process, and the bead shape can be further made fuller.
こうして、別紙添付参考図に溶接終端部の外観
写真で示すようにアンダカツトのない外観の良好
な溶接ビードを得ることができた。 In this way, it was possible to obtain a weld bead with a good appearance and no undercuts, as shown in the photograph of the external appearance of the welded end in the attached reference drawing.
この発明の立向き終端まわし溶接方法は上記の
ようなものであるから、アンダカツトのない外観
の良好な溶接ビードを得ることができる。従つ
て、従来に比べ安定度の高い溶接部を効率よく得
ることができ、生産性を向上することができる。 Since the vertical end turn welding method of the present invention is as described above, it is possible to obtain a weld bead with a good appearance and no undercuts. Therefore, it is possible to efficiently obtain a welded part with higher stability than in the past, and productivity can be improved.
第１図は立向き隅肉溶接部の説明図、第２図
ａ，ｂはそれぞれこの発明方法を実施する場合の
溶接ロボツトのトーチの動きを示す説明図、第３
図及び第４図はこの発明方法の一実施例を示すも
ので、第３図は上端部（終端部）近傍におけるト
ーチの動きの説明図、第４図はトーチの各種の動
きの関連及び溶接電圧との関係を示す説明図であ
る。
１…被溶接立部材、２…立部材、３…上端部。
FIG. 1 is an explanatory diagram of a vertical fillet weld, FIGS.
4 and 4 show an embodiment of the method of the present invention, FIG. 3 is an explanatory diagram of the movement of the torch near the upper end (terminus), and FIG. 4 is an illustration of the relationship between various movements of the torch and welding. FIG. 3 is an explanatory diagram showing the relationship with voltage. 1... Vertical member to be welded, 2... Vertical member, 3... Upper end portion.
Claims (1)
材を直交配置で当接し、この立部材の両側にトー
チを対向させて配設し、このトーチによつて当接
部の両側を下方から上向に溶接電流140A±
20A、溶接電圧20V±2V及び溶接速度10cm／分±
１cm分のMIG溶接により隅肉溶接し、上記立部材
の上端部に達した時点で上記トーチの速度を上げ
ると共に溶接電圧を10％程度上げて該トーチを両
側から上記立部材の板厚方向に突つ込みトーチを
接近させて一定時間保持しその後上記トーチを引
つ込ませてからアークを切ることを特徴とする立
向き終端まわし溶接方法。1. A vertical member having a lower height than the vertical member to be welded is brought into contact with the vertical member in an orthogonal arrangement, and a torch is placed on both sides of the vertical member so as to face each other, and both sides of the abutting part are directed downwardly by the torch. Welding current 140A± upwards from
20A, welding voltage 20V±2V and welding speed 10cm/min±
Fillet welding is performed by MIG welding for 1 cm, and when the upper end of the vertical member is reached, the speed of the torch is increased and the welding voltage is increased by about 10%, and the torch is applied from both sides in the thickness direction of the vertical member. A vertical end turn welding method characterized by bringing a thrusting torch close and holding it for a certain period of time, then retracting the torch and cutting the arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497481A JPS5838675A (en) | 1981-08-28 | 1981-08-28 | Vertical terminal boxing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497481A JPS5838675A (en) | 1981-08-28 | 1981-08-28 | Vertical terminal boxing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5838675A JPS5838675A (en) | 1983-03-07 |
| JPS6116230B2 true JPS6116230B2 (en) | 1986-04-28 |
Family
ID=15140954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13497481A Granted JPS5838675A (en) | 1981-08-28 | 1981-08-28 | Vertical terminal boxing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004026519A1 (en) * | 2002-09-09 | 2004-04-01 | National Institute For Materials Science | Welding method using welding material of low transformation temperature |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6272478A (en) * | 1985-09-26 | 1987-04-03 | Hosei Brake Kogyo Kk | Welding method for reinforcing member |
-
1981
- 1981-08-28 JP JP13497481A patent/JPS5838675A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004026519A1 (en) * | 2002-09-09 | 2004-04-01 | National Institute For Materials Science | Welding method using welding material of low transformation temperature |
| CN100418689C (en) * | 2002-09-09 | 2008-09-17 | 独立行政法人物质·材料研究机构 | Welding method using low transformation temperature welding material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5838675A (en) | 1983-03-07 |
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