JPH115163A - Single face butt welding - Google Patents
Single face butt weldingInfo
- Publication number
- JPH115163A JPH115163A JP15686897A JP15686897A JPH115163A JP H115163 A JPH115163 A JP H115163A JP 15686897 A JP15686897 A JP 15686897A JP 15686897 A JP15686897 A JP 15686897A JP H115163 A JPH115163 A JP H115163A
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- Prior art keywords
- welding
- section
- value
- main
- arc voltage
- 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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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、板材、管材等の片
面突合せ溶接方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for single-sided butt welding of a sheet material, a tube material and the like.
【０００２】[0002]
【従来の技術】片面突合せ溶接は、被溶接材の両端部を
固定材であるタブ板で拘束し、該被溶接材の裏面にフラ
ックス・銅当金またはセラミックス等の裏当て材を当接
して、上側から溶接を行い、被溶接材の裏面に所定の裏
ビードを形成して片面突合せ溶接を行う。2. Description of the Related Art In one-sided butt welding, both ends of a material to be welded are constrained by a tab plate as a fixing material, and a backing material such as flux, copper metal or ceramics is brought into contact with the back surface of the material to be welded. Then, welding is performed from above, a predetermined back bead is formed on the back surface of the material to be welded, and single-sided butt welding is performed.
【０００３】従来、前記片面突合せ溶接は、同一の溶接
線に対し、一端のタブ板をアークスタート点とし始端部
から終端部の他端のタブ板まで同一の溶接条件で溶接が
行われている。Conventionally, in the single-sided butt welding, the same welding line is welded under the same welding conditions from the start end to the tab end at the other end using the tab plate at one end as an arc start point. .
【０００４】図３（ａ）は、従来技術における片面突合
せ溶接を行う場合の被溶接材、タブ板等の配置関係を示
す平面図で、１、１は溶接線２で片面突合せ溶接される
被溶接材、３は溶接開始位置、４は溶接終了位置であ
り、５は被溶接材の始端部、６は被溶接材の終端部、７
はタブ板で、被溶接材１の両端に固着され、アークスタ
ート時およびアーク終了時のアーク変動による欠陥解消
および被溶接材１相互の熱変形に対し被溶接材１を拘束
する目的のために設けられている。FIG. 3 (a) is a plan view showing the positional relationship between a material to be welded, a tab plate and the like when performing one-sided butt welding in the prior art. Welding material, 3 is the welding start position, 4 is the welding end position, 5 is the starting end of the work to be welded, 6 is the end of the work to be welded, 7
Is a tab plate, which is fixed to both ends of the material 1 to be welded, for the purpose of eliminating defects due to arc fluctuations at the start and end of the arc and restraining the material 1 against thermal deformation of the material 1 to be welded. Is provided.
【０００５】図３（ｂ）は、従来技術における溶接開始
位置から溶接終了位置までのアーク電圧（Ｅａ）の値
を、図３（ｃ）は同じく溶接開始位置から溶接終了位置
までの溶接速度（Ｖｚ）の値を、各々示したグラフであ
る。FIG. 3B shows the value of the arc voltage (Ea) from the welding start position to the welding end position in the prior art, and FIG. 3C also shows the welding speed (E) from the welding start position to the welding end position. Vz) is a graph showing the respective values.
【０００６】図３（ｂ），（ｃ）に示すように、従来の
片面突合せ溶接は、本溶接の溶接条件であるアーク電圧
（Ｅａ）および溶接速度（Ｖｚ）の値で、一方のタブ板
７の溶接開始位置３から他端のタブ板７の溶接終了位置
４まで、一定の溶接条件で溶接を行っている。尚。矢印
イは溶接方向を示す。As shown in FIGS. 3 (b) and 3 (c), in the conventional single-sided butt welding, one of the tab plates is formed by the values of an arc voltage (Ea) and a welding speed (Vz) which are the welding conditions of the main welding. From the welding start position 3 of FIG. 7 to the welding end position 4 of the tab plate 7 at the other end, welding is performed under constant welding conditions. still. Arrow a indicates the welding direction.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、前述の
従来技術におおける片面突合せ溶接方法は、以下のよう
な問題点があった。However, the single-sided butt welding method in the above-mentioned prior art has the following problems.
【０００８】即ち、前述の従来技術は、始端部、本溶接
部および終端部にわたり、同一の溶接条件で溶接を行う
ために、被溶接材の始端部や終端部付近あるいはタブ板
内においては、被溶接材の内方に比べて溶接熱の分散が
少ないので、アークの突き抜け、即ち、溶落が発生し、
特に、この溶落現象は、タブ板内で顕著である。That is, according to the above-mentioned prior art, in order to perform welding under the same welding conditions over the start end, the main welded portion and the end end, the vicinity of the start end or end end of the material to be welded or in the tab plate is required. Dispersion of welding heat is smaller than the inside of the material to be welded, so penetration of the arc, that is, burn-out occurs,
In particular, this erosion phenomenon is remarkable in the tab plate.
【０００９】そのため、溶接ワイヤの被溶接材への溶
着、溶接トーチのチップの破損等の作業上のトラブルが
多く発生し、作業能率が低下する問題がある。As a result, there are many operational troubles such as welding of a welding wire to a material to be welded, breakage of a tip of a welding torch, etc., and there is a problem that working efficiency is reduced.
【００１０】また、溶落発生時には、溶接品質上、手直
しが必要となり、さらに作業能率が低下し、手直し部の
品質上の問題も発生していた。[0010] In addition, when burn-out occurs, rework is required in terms of welding quality, and further, the work efficiency is reduced, and there is a problem in the quality of the reworked part.
【００１１】本発明は、前述の問題点に鑑み、被溶接材
の始端部、終端部およびタブ板内での溶落の発生を防止
し、品質上および能率的に問題のない効率的な片面突合
せ溶接方法を提供することを目的とする。SUMMARY OF THE INVENTION In view of the above problems, the present invention prevents the occurrence of erosion at the start and end of the material to be welded and in the tab plate, and provides an efficient one-sided surface having no problem in terms of quality and efficiency. It is an object to provide a butt welding method.
【００１２】[0012]
【課題を解決するための手段】前述の課題は、被溶接材
の始端部および終端部がそれぞれタブ板で拘束され、か
つ、前記被溶接材の裏面に裏当材が当接された状態で、
始端部側のタブ板から溶接が開始され、終端部側のタブ
板で溶接が終了する片面突合せ溶接方法において、
（イ）溶接が開始された後の始端部付近までの始端部側
タブ板上の所定区間（Ｌ 1 ）は、アーク電圧を本溶接の
値より増加させ、前記所定区間（Ｌ1 ）と同程度の所定
区間（Ｌ2 ）は、溶接速度を本溶接の値より減少させ、
（ロ）前記所定区間（Ｌ1 ）後から始端部付近の被溶接
材上の所定の位置までの遷移区間（Ｌ3 ）は、アーク電
圧を本溶接の値に一致するように徐々に減少させ、前記
遷移区間（Ｌ3 ）と同程度の遷移区間（Ｌ4 ）は、溶接
速度を本溶接の値に一致するように徐々に増加させ、
（ハ）前記遷移区間（Ｌ3 ）後から終端部付近の被溶接
材上の所定の位置までの区間は、本溶接のアーク電圧値
を維持し、前記遷移区間（Ｌ4 ）後から終端部付近の被
溶接材上の所定の位置までの区間は、本溶接の溶接速度
で溶接を行い、（ニ）前記終端部付近の被溶接材上の所
定の位置から終端部側タブ板上の所定の位置までの遷移
区間（Ｌ5 ）では、アーク電圧を本溶接の値より徐々に
増加させ、前記遷移区間（Ｌ5 ）と同程度の遷移区間
（Ｌ6 ）は、溶接速度を本溶接の値より徐々に減少さ
せ、（ホ）前記遷移区間（Ｌ5 ）後から溶接終了位置ま
での所定区間（Ｌ7 ）は、アーク電圧を本溶接の値より
徐々に増加させた値を維持し、前記所定区間（Ｌ7 ）と
同程度の所定区間（Ｌ8 ）は、溶接速度を本溶接の値よ
り低い値を維持する、ことにより解決される。An object of the present invention is to provide a work piece to be welded.
The start and end of the
In a state where a backing material is in contact with the back surface of the material to be welded,
Welding starts from the tab plate at the start end, and the tab at the end
In the single-sided butt welding method where welding is completed on a plate,
(A) Starting end side up to near the starting end after welding is started
A predetermined section (L 1) The arc voltage of the main welding
The predetermined section (L1) Same as prescribed
Section (LTwo) Reduces the welding speed from the value of main welding,
(B) The predetermined section (L1) Welding near the starting end later
Transition section (LThree) Is arc electric
The pressure is gradually reduced to match the value of the main welding.
Transition section (LThree) And a transition section (LFour) Welding
Gradually increase the speed to match the value of the main welding,
(C) The transition section (LThree) Welding near the end from later
The section up to the specified position on the material is the arc voltage value of the main welding
And the transition section (LFourLater)
The section up to the specified position on the welding material is the welding speed of the main welding.
And (d) a location on the material to be welded near the terminal end.
Transition from the specified position to the specified position on the end tab plate
Section (LFive), The arc voltage is gradually increased
Increase the transition section (LFive) Similar transition section
(L6) The welding speed is gradually reduced from the value of main welding.
(E) the transition section (LFive) From the end to the welding end position
At a predetermined section (L7) The arc voltage is higher than the value of main welding.
The value that is gradually increased is maintained and the predetermined section (L7)When
The same section (L8) Is the value of the welding speed
By maintaining the lower value.
【００１３】前述の手段によれば、溶落の発生しやすい
被溶接材の始端部および終端部付近あるいはタブ板で
は、アーク電圧を本溶接に比べ増加させるのでアークが
分散化し、被溶接材の溶込みが浅くなり、また、溶接速
度を減少させることにより溶接ワイヤの溶融量を増加さ
せて溶融プールを拡大させ、結果的に裏ビードが形成さ
れにくくなり、溶落が発生しない。According to the above-mentioned means, the arc voltage is increased in the vicinity of the starting end and the end of the material to be eroded or the tab plate, as compared with the main welding, so that the arc is dispersed and the material to be welded is reduced. The penetration becomes shallower, and the welding pool is expanded by increasing the melting amount of the welding wire by decreasing the welding speed. As a result, the back bead is less likely to be formed, and burnout does not occur.
【００１４】さらに、遷移区間を設けることにより前述
のアーク電圧、溶接速度の溶接条件が徐々に変化し、急
激な溶接条件の変更が行われないので、品質的に良好な
溶接部が得られる。Further, by providing the transition section, the welding conditions of the arc voltage and the welding speed described above are gradually changed, and a sharp change in the welding conditions is not performed.
【００１５】そして、上記のことから、アーク電圧を調
節する各区間Ｌ1 、Ｌ3 、Ｌ5 、Ｌ 7 と溶接速度を調節
する各区間Ｌ2 、Ｌ4 、Ｌ6 、Ｌ8 とは、それぞれ対応
する区間（Ｌ1 とＬ2 、Ｌ3 とＬ4 、Ｌ5 とＬ6 、Ｌ7
とＬ8 ）が完全に同一でなくともよく、それぞれ同程度
であればよい。From the above, the arc voltage is adjusted.
Each section L to be knotted1, LThree, LFive, L 7And adjust welding speed
Each section LTwo, LFour, L6, L8And correspond to
Section (L1And LTwo, LThreeAnd LFour, LFiveAnd L6, L7
And L8) Need not be exactly the same,
Should be fine.
【００１６】[0016]
【発明の実施の形態】本発明の実施の形態を図面に基づ
いて説明する。Embodiments of the present invention will be described with reference to the drawings.
【００１７】図１（ａ）は、本発明の片面突合せ溶接を
行う場合の被溶接材、タブ板等の配置関係を示す平面図
で、１、１は、溶接線２で片面突合せ溶接される被溶接
材であり、３は溶接開始位置、４は溶接終了位置、５は
被溶接材の始端部、６は被溶接材の終端部、７はタブ板
である。FIG. 1 (a) is a plan view showing the positional relationship between a material to be welded, a tab plate and the like when performing single-sided butt welding according to the present invention. 3 is a welding start position, 4 is a welding end position, 5 is a starting end of the material to be welded, 6 is an end of the material to be welded, and 7 is a tab plate.
【００１８】図１（ｂ）は、溶接開始位置から溶接終了
位置までのアーク電圧（Ｅａ）の値を、図１（ｃ）は同
じく溶接開始位置から溶接終了位置までの溶接速度（Ｖ
ｚ）の値を、各々示したグラフである。ここで、Ｌは本
溶接区間を示し、ＬE は全溶接区間を示す。そして、Ｘ
は溶接開始位置３からの溶接方向距離を表す。尚、矢印
ロは、溶接方向を示す。FIG. 1B shows the value of the arc voltage (Ea) from the welding start position to the welding end position, and FIG. 1C also shows the welding speed (V) from the welding start position to the welding end position.
2 is a graph showing values of z). Here, L is shown a main welding period, L E denotes the entire weld zone. And X
Represents the distance from the welding start position 3 in the welding direction. The arrow B indicates the welding direction.
【００１９】図１（ｂ），（ｃ）に示すように、本発明
では、始端部側のタブ板７上の溶接開始位置３で溶接が
開始された後の所定区間（Ｌ1 ）は、アーク電圧を本溶
接の値ＥａよりΔＥａ1 増加させ、また、溶接速度につ
いては、前記所定区間（Ｌ1）と同程度の所定区間（Ｌ
2 ）で、溶接速度を本溶接の値ＶｚよりΔＶｚ1 だけ減
少させて溶接する。As shown in FIGS. 1B and 1C, in the present invention, the predetermined section (L 1 ) after the welding is started at the welding start position 3 on the tab plate 7 on the starting end side, The arc voltage is increased by ΔEa 1 from the value Ea of the main welding, and the welding speed is set to a predetermined section (L 1 ) substantially equal to the predetermined section (L 1 ).
In 2 ), welding is performed with the welding speed reduced by ΔVz 1 from the value Vz of the main welding.
【００２０】次に、前記所定区間（Ｌ1 ）後から始端部
５付近までの遷移区間（Ｌ3 ）のアーク電圧は、本溶接
の値Ｅａに一致するように徐々に減少させ、また、溶接
速度については、前記遷移区間（Ｌ3 ）と同程度の遷移
区間（Ｌ4 ）で、本溶接の値Ｖｚに一致するように徐々
に増加させる。Next, the arc voltage in the transition section (L 3 ) from after the predetermined section (L 1 ) to the vicinity of the start end 5 is gradually reduced so as to match the value Ea of the main welding. The speed is gradually increased in a transition section (L 4 ) substantially equal to the transition section (L 3 ) so as to match the value Vz of the main welding.
【００２１】次に、前記遷移区間（Ｌ3 ）後から終端部
６付近の所定の位置までの区間（Ｌ）は、本溶接の所定
のアーク電圧値Ｅａ、溶接速度Ｖｚの溶接条件で溶接を
行う。Next, in a section (L) from after the transition section (L 3 ) to a predetermined position near the end portion 6, welding is performed under the welding conditions of the predetermined arc voltage value Ea and the welding speed Vz of the main welding. Do.
【００２２】次に、終端部６付近の所定の位置から終端
部側のタブ板上の所定の位置までの遷移区間（Ｌ5 ）で
は、アーク電圧を本溶接の値Ｅａより徐々にＥａ2 だけ
増加させ、前記遷移区間（Ｌ5 ）と同程度の遷移区間
（Ｌ6 ）は、溶接速度を本溶接の値Ｖｚより徐々にＶｚ
2 だけ減少させる。Next, in a transition section (L 5 ) from a predetermined position near the terminal portion 6 to a predetermined position on the tab plate on the terminal portion side, the arc voltage is gradually increased by Ea 2 from the value Ea of the main welding. In the transition section (L 6 ), which is approximately the same as the transition section (L 5 ), the welding speed is gradually increased by Vz from the value Vz of the main welding.
Decrease by 2 .
【００２３】次に、前記遷移区間（Ｌ5 ）後から溶接終
了位置までの所定区間（Ｌ7 ）は、アーク電圧を本溶接
の値ＥａよりΔＥａ2 だけ増加させた値を維持し、前記
所定区間（Ｌ7 ）の同程度の所定区間（Ｌ8 ）は、溶接
速度を本溶接の値ＶｚよりΔＶｚ2 だけ低下させた値を
維持し、溶接を終了する。Next, in a predetermined section (L 7 ) from the transition section (L 5 ) to the welding end position, the arc voltage is maintained at a value obtained by increasing ΔEa 2 from the value Ea of the main welding, and In the same predetermined section (L 8 ) of the section (L 7 ), the welding speed is maintained at a value reduced by ΔVz 2 from the value Vz of the main welding, and the welding is terminated.
【００２４】図２は、本発明の制御回路を示したブロッ
ク図である。図２において、８は溶接台車の走行距離検
出エンコーダ、９は前記走行距離検出エンコーダ８の信
号を受け、走行距離（Ｘ）を算出するパルスカウンター
である。FIG. 2 is a block diagram showing a control circuit according to the present invention. In FIG. 2, reference numeral 8 denotes a traveling distance detection encoder of the welding bogie, and 9 denotes a pulse counter that receives a signal from the traveling distance detection encoder 8 and calculates a traveling distance (X).
【００２５】１０は溶接開始情報または溶接停止位置情
報を与えておく教示装置、１１は区間Ｌ1 〜Ｌ8 とア−
ク電圧の増減量ΔＥａ1 、ΔＥａ2 および溶接速度の増
減量ΔＶZ1、ΔＶZ2を設定する設定器であり、１２は溶
接位置判定回路である。前記溶接位置判定回路１２で
は、前記走行距離エンコーダ８が検出した走行距離
（Ｘ）と前記教示装置１０からの開始または停止データ
および前記設定器１１からの区間Ｌ1 〜Ｌ8 のデータが
入力され、区間Ｌ1,Ｌ3 、本溶接区間Ｌおよび区間Ｌ 5,
Ｌ7 のアーク電圧制御用位置出力および区間Ｌ2,Ｌ4 、
本溶接区間Ｌおよび区間Ｌ6,Ｌ8 の溶接速度制御用位置
出力のデータが作成される。Reference numeral 10 denotes welding start information or welding stop position information.
A teaching device for giving a report, 11 is a section L1~ L8And-
Voltage change ΔEa1, ΔEaTwoAnd welding speed
Weight loss ΔVZ1, ΔVZ212 is a setting device for setting
This is a contact position determination circuit. In the welding position determination circuit 12,
Is the traveling distance detected by the traveling distance encoder 8
(X) and start or stop data from the teaching device 10
And the section L from the setting unit 111~ L8Data
Input, section L1,LThree, Main welding section L and section L Five,
L7Output for arc voltage control and section L2,LFour,
Main welding section L and section L6,L8For welding speed control
Output data is created.
【００２６】１３は溶接条件データベースで、基準アー
ク電圧Ｅ0 と基準溶接速度Ｖ0 が入力されている。Reference numeral 13 denotes a welding condition database to which a reference arc voltage E 0 and a reference welding speed V 0 are inputted.
【００２７】１４は溶接条件の演算回路で、前記溶接位
置判定回路１２からの区間Ｌ1 〜Ｌ 8 におけるアーク電
圧位置出力および溶接速度位置出力と設定器１１で与え
られた各区間のア−ク電圧の増減量ΔＥａ1 、ΔＥａ2
および溶接速度の増減量ΔＶ Z1、ΔＶZ2の諸データおよ
び溶接条件データベース１３からの基準アーク電圧Ｅ 0
と基準溶接速度Ｖ0 が入力され、制御するアーク電圧Ｅ
ａと溶接速度Ｖｚの値が演算され出力される。Numeral 14 denotes a calculation circuit for calculating welding conditions.
Section L from the position determination circuit 121~ L 8Arc electricity in
Pressure position output and welding speed position output and setter 11
Increase / decrease ΔEa of the arc voltage in each section1, ΔEaTwo
And increase / decrease amount of welding speed ΔV Z1, ΔVZ2Data and
Arc voltage E from the welding and welding condition database 13 0
And reference welding speed V0Is input and the arc voltage E to be controlled
The values of a and the welding speed Vz are calculated and output.
【００２８】１５は溶接台車のモータ駆動装置（ドライ
バ）であり、１６は溶接台車のモータであり、前記溶接
条件の演算回路１４から出力された溶接速度Ｖｚの値
は、モータ駆動装置（ドライバ）１５を経由して溶接台
車のモータ１６を制御し、溶接速度を制御する。Reference numeral 15 denotes a motor driving device (driver) for the welding cart, 16 denotes a motor for the welding cart, and the value of the welding speed Vz output from the welding condition calculation circuit 14 is a motor driving device (driver). A welding speed is controlled by controlling a motor 16 of the welding cart via 15.
【００２９】また、１７は溶接電源、１８は前記溶接電
源に一極が結線された溶接トーチで、前記溶接条件の演
算回路１４から出力されたアーク電圧Ｅａの値に基づい
て、溶接電源１７が制御され、その出力が溶接トーチ１
８に送られてアーク電圧の制御が行われる。Reference numeral 17 denotes a welding power source, and 18 denotes a welding torch having one pole connected to the welding power source. The welding power source 17 is operated based on the value of the arc voltage Ea output from the welding condition calculation circuit 14. The output is controlled and the welding torch 1
8 to control the arc voltage.
【００３０】表１は、溶接開始位置から停止位置までに
おけるアーク電圧の演算例を示したものである。Table 1 shows an example of the calculation of the arc voltage from the welding start position to the welding stop position.
【００３１】[0031]
【表１】 [Table 1]
【００３２】なお、上記の本発明の実施の形態ではアー
ク電圧と溶接速度の両方を制御しているが、開先状況や
溶接条件によっては、ΔＶZ1＝０、ΔＶZ2＝０として、
アーク電圧のみの制御を行ったり、ΔＥａ1 ＝０、ΔＥ
ａ2 ＝０として、溶接速度のみの制御を行ったりするこ
とでも相当の効果を得ることできる。In the above embodiment of the present invention, both the arc voltage and the welding speed are controlled. However, depending on the groove conditions and welding conditions, ΔV Z1 = 0 and ΔV Z2 = 0
Control of only the arc voltage, ΔEa 1 = 0, ΔE
A considerable effect can also be obtained by controlling only the welding speed with a 2 = 0.
【００３３】[0033]
【実施例】本発明の一実施例としては、以下のとおりで
ある。 （１）溶接条件、開先形状： （イ）溶接ワイヤ ：メタルコアードワイヤ、１．６ｍ
ｍΦ （ロ）シールドガス：ＣＯ2 １００％ （ハ）裏当材 ：セラミックス裏当 （ニ）開先形状 ：Ｖ形３０°、ギャップ６ｍｍ （ホ）溶接形態 ：揺動高速回転アーク溶接、 アーク回転数＝５０Ｈｚ，アーク回転直径＝２ｍｍ 揺動幅＝４ｍｍ，揺動数＝１．２５Ｈｚ， 揺動周期＝０．０５秒 （ヘ）タブ板サイズ：被溶接材と同形状の開先で、長さ
７０×幅７０ (mm) （ホ）本溶接条件 ：溶接電流３５０Ａ，アーク電圧２
６Ｖ，溶接速度１６ｃｍ／分 （２）設定値 Ｌ1 ＝５０ｍｍ，Ｌ2 ＝４０ｍｍ，Ｌ3 ＝２０ｍｍ，Ｌ
4 ＝３０ｍｍ，Ｌ5 ＝３０ｍｍ，Ｌ6 ＝２０ｍｍ，Ｌ7
＝６０ｍｍ，Ｌ8 ＝７０ｍｍ， ΔＥａ1 ＝２Ｖ，ΔＥａ2 ＝４Ｖ， ΔＶｚ1 ＝１ｃｍ／分 ΔＶｚ2 ＝１．５ｃｍ／分DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is as follows. (1) Welding conditions, groove shape: (a) Welding wire: metal cored wire, 1.6 m
mΦ (b) Shielding gas: 100% CO 2 (c) Backing material: ceramic backing (d) Groove shape: V type 30 °, gap 6mm (e) Welding form: swing high-speed rotary arc welding, arc rotation Number = 50 Hz, arc rotation diameter = 2 mm Oscillation width = 4 mm, number of oscillations = 1.25 Hz, oscillation cycle = 0.05 seconds (f) Tab plate size: A groove with the same shape as the material to be welded, long 70 × width 70 (mm) (e) Main welding condition: welding current 350A, arc voltage 2
6 V, welding speed 16 cm / min (2) Set values L 1 = 50 mm, L 2 = 40 mm, L 3 = 20 mm, L
4 = 30 mm, L 5 = 30 mm, L 6 = 20 mm, L 7
= 60 mm, L 8 = 70 mm, ΔEa 1 = 2 V, ΔEa 2 = 4 V, ΔVz 1 = 1 cm / min ΔVz 2 = 1.5 cm / min
【００３４】前述の実施例から推察されるようにアーク
電圧および溶接速度の増減値は、本溶接時の値の５〜２
０％の範囲で選定すればよい。As can be inferred from the above-described embodiment, the increase and decrease values of the arc voltage and the welding speed are 5 to 2 times the values at the time of the main welding.
What is necessary is just to select in the range of 0%.
【００３５】本発明では、アーク電圧および溶接速度を
増加量または減少量で記載したが、増加率または減少率
として係数を使用しても同様の効果を得ることができ
る。In the present invention, the arc voltage and the welding speed are described in the amount of increase or decrease, but the same effect can be obtained by using a coefficient as the increase or decrease rate.
【００３６】[0036]
【発明の効果】本発明は以上のとおりであるから、片面
突合せ溶接において、溶接熱が保有されやすいタブ板部
および溶接の始、終端部での溶落を的確に防止できる。
その結果、溶接ワイヤの被溶接材への溶着、溶接トーチ
のチップの破損等の作業上のトラブルが皆無となり、作
業能率が大幅に向上する。As described above, according to the present invention, in one-side butt welding, it is possible to accurately prevent burn-off at the tab plate portion where welding heat is likely to be retained and at the beginning and end of welding.
As a result, there is no work trouble such as welding of the welding wire to the material to be welded, breakage of the tip of the welding torch, and work efficiency is greatly improved.
【００３７】また、溶落発生時の手直し作業が皆無とな
ったで、作業能率面の向上および溶接部の品質も向上す
る効果がある。In addition, since there is no need for a reworking operation when burn-out occurs, there is an effect that the work efficiency is improved and the quality of the welded part is also improved.
【図１】（ａ）本発明にかかる被溶接材の平面図。 （ｂ）本発明にかかるアーク電圧の変化を表したグラ
フ。 （ｃ）本発明にかかる溶接速度の変化を表したグラフ。FIG. 1 (a) is a plan view of a material to be welded according to the present invention. (B) A graph showing a change in arc voltage according to the present invention. (C) A graph showing a change in welding speed according to the present invention.
【図２】本発明にかかる制御ブロック図。FIG. 2 is a control block diagram according to the present invention.
【図３】（ａ）従来技術にかかる被溶接材の平面図。 （ｂ）従来技術にかかるアーク電圧の変化を表したグラ
フ。 （ｃ）従来技術にかかる溶接速度の変化を表したグラ
フ。FIG. 3A is a plan view of a material to be welded according to the related art. (B) A graph showing a change in arc voltage according to the related art. (C) A graph showing a change in welding speed according to the prior art.
１ 被溶接材 ２ 溶接線 ３ 溶接開始位置 ４ 溶接終了位置 ５ 始端部 ６ 終端部 ７ タブ板 ８ 溶接台車の走行距離検出エンコーダ ９ パルスカウンター １０ 溶接開始情報または溶接停止位置情報を与えてお
く教示装置 １１ 設定器 １２ 溶接位置判定回路 １３ 溶接条件データベース １４ 溶接条件の演算回路 １５ 溶接台車のモータ駆動装置（ドライバ） １６ 溶接台車のモータ １７ 溶接電源 １８ 溶接トーチ Ｌ 本溶接区間REFERENCE SIGNS LIST 1 welded material 2 welding line 3 welding start position 4 welding end position 5 start end 6 end 7 tab plate 8 encoder for detecting travel distance of welding trolley 9 pulse counter 10 teaching device for giving welding start information or welding stop position information Reference Signs List 11 Setting device 12 Welding position judgment circuit 13 Welding condition database 14 Welding condition calculation circuit 15 Welding truck motor driving device (driver) 16 Welding truck motor 17 Welding power source 18 Welding torch L Main welding section
Claims (1)
れタブ板で拘束され、かつ、前記被溶接材の裏面に裏当
材が当接された状態で、始端部側のタブ板から溶接が開
始され、終端部側のタブ板で溶接が終了する片面突合せ
溶接方法において、（イ）溶接が開始された後の始端部
付近までの始端部側タブ板上の所定区間（Ｌ 1 ）は、ア
ーク電圧を本溶接の値より増加させ、前記所定区間（Ｌ
1 ）と同程度の所定区間（Ｌ2 ）は、溶接速度を本溶接
の値より減少させ、（ロ）前記所定区間（Ｌ1 ）後から
始端部付近の被溶接材上の所定の位置までの遷移区間
（Ｌ3 ）は、アーク電圧を本溶接の値に一致するように
徐々に減少させ、前記遷移区間（Ｌ3 ）と同程度の遷移
区間（Ｌ4 ）は、溶接速度を本溶接の値に一致するよう
に徐々に増加させ、（ハ）前記遷移区間（Ｌ3 ）後から
終端部付近の被溶接材上の所定の位置までの区間は、本
溶接のアーク電圧値を維持し、前記遷移区間（Ｌ4 ）後
から終端部付近の被溶接材上の所定の位置までの区間
は、本溶接の溶接速度で溶接を行い、（ニ）前記終端部
付近の被溶接材上の所定の位置から終端部側タブ板上の
所定の位置までの遷移区間（Ｌ5 ）では、アーク電圧を
本溶接の値より徐々に増加させ、前記遷移区間（Ｌ5 ）
と同程度の遷移区間（Ｌ6 ）は、溶接速度を本溶接の値
より徐々に減少させ、（ホ）前記遷移区間（Ｌ5 ）後か
ら溶接終了位置までの所定区間（Ｌ7 ）は、アーク電圧
を本溶接の値より徐々に増加させた値を維持し、前記所
定区間（Ｌ7 ）と同程度の所定区間（Ｌ8 ）は、溶接速
度を本溶接の値より低い値を維持する、ことを特徴とす
る片面突合せ溶接方法。The starting and ending portions of a material to be welded are respectively
Backed by a tab plate, and
With the material in contact, the welding is opened from the tab plate on the start end side.
One-sided butting that starts and ends welding on the tab plate at the end
In the welding method, (a) the starting end after welding is started
A predetermined section (L 1)
The peak voltage is increased from the value of the main welding and the predetermined section (L
1) And a predetermined section (LTwo) Main welding speed
(B) the predetermined section (L1)later
Transition section to a predetermined position on the workpiece near the start end
(LThree) So that the arc voltage matches the value of the main welding
The transition section (LThree) Similar transitions
Section (LFour) To make the welding speed match the value of main welding
(C) the transition section (LThree)later
The section up to the specified position on the material to be welded near the end is
By maintaining the welding arc voltage value, the transition section (LFour)rear
Section from to the specified position on the workpiece near the end
Performs the welding at the welding speed of the main welding;
From the specified position on the workpiece to be
The transition section (LFive), The arc voltage
The value is gradually increased from the value of the main welding, and the transition section (LFive)
Transition section (L6) The welding speed is the value of main welding
(E) the transition section (LFiveAfter)
A predetermined section (L7) Is the arc voltage
Is maintained at a value that is gradually increased from the value of main welding.
Fixed section (L7) And a predetermined section (L8) Is the welding speed
Maintain the value lower than the value of the main welding.
Single side butt welding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15686897A JPH115163A (en) | 1997-06-13 | 1997-06-13 | Single face butt welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15686897A JPH115163A (en) | 1997-06-13 | 1997-06-13 | Single face butt welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH115163A true JPH115163A (en) | 1999-01-12 |
Family
ID=15637154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15686897A Pending JPH115163A (en) | 1997-06-13 | 1997-06-13 | Single face butt welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH115163A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009160661A (en) * | 2009-04-23 | 2009-07-23 | Mitsubishi Electric Corp | Arc welding equipment |
| JP2010247174A (en) * | 2009-04-14 | 2010-11-04 | Nippon Steel Corp | Method for manufacturing plasma-tailored blank of different thickness steel sheet having excellent gap resistance |
| 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 |
-
1997
- 1997-06-13 JP JP15686897A patent/JPH115163A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010247174A (en) * | 2009-04-14 | 2010-11-04 | Nippon Steel Corp | Method for manufacturing plasma-tailored blank of different thickness steel sheet having excellent gap resistance |
| JP2009160661A (en) * | 2009-04-23 | 2009-07-23 | Mitsubishi Electric Corp | Arc welding equipment |
| 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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