JPS6257773A - Groove profiling method in two electrode gas shielded arc welding - Google Patents

Groove profiling method in two electrode gas shielded arc welding

Info

Publication number
JPS6257773A
JPS6257773A JP19773085A JP19773085A JPS6257773A JP S6257773 A JPS6257773 A JP S6257773A JP 19773085 A JP19773085 A JP 19773085A JP 19773085 A JP19773085 A JP 19773085A JP S6257773 A JPS6257773 A JP S6257773A
Authority
JP
Japan
Prior art keywords
nozzle
groove
welding wire
welding
difference
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.)
Pending
Application number
JP19773085A
Other languages
Japanese (ja)
Inventor
Yukihiko Sato
之彦 佐藤
Eiji Morishige
森重 英治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP19773085A priority Critical patent/JPS6257773A/en
Publication of JPS6257773A publication Critical patent/JPS6257773A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To make a profiling simple and accurate by operating the difference in the respective consuming electric power of the right and left nozzle and by moving the right and left nozzle integrally in the width direction of the groove so as to make the difference thereof zero. CONSTITUTION:The right and left electric power detector 7A, 7B is arranged together with the right and left nozzle 2A, 2B for a welding power source 4. The detector 7A, 7B is respectively composed of a current and voltage detector 8A, 9A and 8B, 8B to detect the consuming electric power of each nozzle 2A, 2B. Then, the difference in the consuming power of each nozzle is operated by providing a subtracter 10 and the right and left nozzle 2A, 2B is moved in the groove width direction by a nozzle driving motor 11 so as to make the difference thereof zero as well. With this method, the center part between nozzles can always be maintained at the groove width center, so a correct groove profiling can be performed with simple device.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は、2電極ガスシールドアーク溶接における開
先倣い方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a groove tracing method in two-electrode gas-shielded arc welding.

〔従来技術とその問題点〕[Prior art and its problems]

従来、第3図に示すように、被溶接材1の開先幅方向に
間隔をあけて左側および右側ノズル2A。
Conventionally, as shown in FIG. 3, left and right nozzles 2A are spaced apart in the groove width direction of the welded material 1.

2Bを設け、左側および右側ノズル2A、2Bを通して
開先に向けて左側および右側溶接ワイヤ3A。
2B and the left and right welding wires 3A towards the groove through the left and right nozzles 2A, 2B.

3B を、シールドガスと共に左側および右側ワイヤ供
給モータ5A、5Bによって連続的に供給し、左側およ
び右側溶接ワイヤ3A、3Bに溶接電源4から溶接電流
を供給して、左側および右側溶接ワイヤ3A、3Bの先
端と被溶接材1との間に左側および右側アーク6A、6
Bを発生させ、左側お:び右側ノズル2A、2Bを開先
にそって連続的に移動させて被溶接材1を溶接する方法
があった。
3B is continuously supplied together with shielding gas by the left and right wire supply motors 5A, 5B, and welding current is supplied from the welding power source 4 to the left and right welding wires 3A, 3B, so that the left and right welding wires 3A, 3B are Left and right side arcs 6A, 6 are connected between the tip of the
There is a method of welding the material to be welded 1 by generating B and continuously moving the left and right nozzles 2A and 2B along the groove.

上述した2電極ガスシールドアーク溶接法において、特
に重要なことは、開先倣いであり、簡単且つ正確に開先
倣いが行なえる方法が望まれているが、満足できる方法
は未だ提案されていない。
In the above-mentioned two-electrode gas-shielded arc welding method, what is particularly important is groove tracing, and a method that can easily and accurately perform groove tracing is desired, but a satisfactory method has not yet been proposed. .

〔発明の目的〕[Purpose of the invention]

従って、この発明の目的は、簡単且つ正確に開先倣いが
行なえる、2電極ガスシールドアーク溶接における開先
倣い方法を提供するものである。
Therefore, an object of the present invention is to provide a groove tracing method for two-electrode gas shielded arc welding, which allows groove tracing to be performed simply and accurately.

〔発明の概要〕[Summary of the invention]

この発明は、被溶接材の開先幅方向に間隔をあけて左側
ノズルおよび右側ノズルを設け、前記左側ノズルおよび
右側ノズルを通して前記開先に向けて左側溶接ワイヤお
よび右側溶接ワイヤをシールドガスと共に供給し、前記
左側溶接ワイヤの先端と前記被溶接材との間に左側アー
クを発生させ、前記右側溶接ワイヤの先端と前記被溶接
材との間に右側アークを発生させ、前記左側ノズルおよ
び前記右側ノズルを前記開先にそって一体的に移動させ
て、前記被溶接材を溶接するに際して、前記左側溶接ワ
イヤで消費される電力(WL)  と前記右側溶接ワイ
ヤで消費される電力(WR)との差(WL幅方向に移動
させることに特徴を有するものである。
In this invention, a left nozzle and a right nozzle are provided at intervals in the groove width direction of the material to be welded, and a left welding wire and a right welding wire are supplied together with a shielding gas toward the groove through the left nozzle and right nozzle. A left arc is generated between the tip of the left welding wire and the material to be welded, a right arc is generated between the tip of the right welding wire and the material to be welded, and the left nozzle and the right When welding the workpiece by integrally moving the nozzle along the groove, the power consumed by the left welding wire (WL) and the power consumed by the right welding wire (WR). (The difference is that the WL is moved in the width direction.)

〔発明の構成〕[Structure of the invention]

次に、この発明の一実施態様を図面を参照しながら説明
する。
Next, one embodiment of the present invention will be described with reference to the drawings.

第1図は、この発明の一実施態様のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.

第1図において、左側ノズル2Aおよび右側ノズル2B
は、被溶接材1の開先幅方向に間隔をあけて設けられて
いる。左側溶接ワイヤ3Aおよび右側溶接ワイヤ3Bは
、左側および右側ノズル2A、2Bを通して開先に向け
て、左側ワイヤ供給モータ5Aおよび右側ワイヤ供給モ
ータ5Bによって、シールドガスと共に連続的に供給さ
れる。左側および右側ノズル2A、2Bは、左側および
右側溶接ワイヤ3A。
In FIG. 1, the left nozzle 2A and the right nozzle 2B
are provided at intervals in the groove width direction of the welded material 1. The left welding wire 3A and the right welding wire 3B are continuously supplied together with shielding gas toward the groove through the left and right nozzles 2A, 2B by the left wire supply motor 5A and the right wire supply motor 5B. The left and right nozzles 2A, 2B are the left and right welding wires 3A.

3B と電気的に導通しておシ、開先にそって一体的且
つ連続的に移動する。被溶接材1は、溶接電源4から左
側および右側溶接ワイヤ3A、3Bに供給される溶接電
流によって、左側溶接ワイヤ3Aの先端と被溶接材1と
の間に発生する左側アーク6Aおよび右側溶接ワイヤ3
Bの先端と被溶接材1との間に発生する右側アーク6B
によって溶接される。
3B and moves integrally and continuously along the groove. The material to be welded 1 has a left arc 6A and a right welding wire generated between the tip of the left welding wire 3A and the material to be welded 1 by welding current supplied from the welding power source 4 to the left and right welding wires 3A, 3B. 3
Right side arc 6B generated between the tip of B and the material to be welded 1
Welded by.

左側電力検出器7Aは、左側電流検出器8Aと左側電圧
検出器9Aとから、左側ノズル2Aの先端21Aと被溶
接材1との間で消費される電力(WL)を検出する。
The left power detector 7A detects the power (WL) consumed between the tip 21A of the left nozzle 2A and the material to be welded 1 from the left current detector 8A and the left voltage detector 9A.

右側電力検出器7Bは、右側電流検出器8Bと右側電圧
検出器9Bとから、右側ノズル2Bの先端2’Bと被溶
接材1との間で消費される電力(WR)  を検出する
The right power detector 7B detects the power (WR) consumed between the tip 2'B of the right nozzle 2B and the workpiece 1 from the right current detector 8B and the right voltage detector 9B.

減算器10は、左側電力検出器7Aによって検出された
電力(Wt、)と右側電力検出器7Bによって検出され
た電力(WR)との差(WL−WR)を演算する。
The subtracter 10 calculates the difference (WL-WR) between the power (Wt) detected by the left power detector 7A and the power (WR) detected by the right power detector 7B.

ノズル駆動モータ11は、上記差(WL−WR)が零に
なるように、左側および右側ノズル2A、2Bを被溶接
材1の開先幅方向に一体的に移動させる。
The nozzle drive motor 11 integrally moves the left and right nozzles 2A and 2B in the groove width direction of the welded material 1 so that the above-mentioned difference (WL-WR) becomes zero.

このように構成されている、この発明の一実施態様にお
いては、第2図(A)に示すように、左側および右側ノ
ズル2A、2B間の中央部と、被溶接材lの開先幅方向
中央部とが一致している場合には、左側電力検出器7A
によって検出される電力(WL)と右側電力検出器7B
によって検出される電力(WR)とは等しい。
In one embodiment of the present invention configured in this way, as shown in FIG. If the center part matches, the left power detector 7A
The power detected by (WL) and the right power detector 7B
is equal to the power detected by (WR).

しかし、同図(B)に示すように、左側および右側ノズ
ル2A、2B間の中央部が、開先幅方向中央部より左側
にずれると、右側ノズル2Bの下端2’Bから突出する
右側溶接ワイヤ3Bの長さくIB)は、左側ノズル2人
の下端2’Aから突出する左側溶接ワイヤ3Aの長さく
JA)より長くなる。ここで、左側および右側アーク6
A、6Bの発生に消費される、電力が等しいとすると、
溶接ワイヤが長くなった分だけ電気抵抗が増大するので
、左側溶接ワイヤ3Aを流れる電流は′、右側溶接ワイ
ヤ3Bを流れる電流に比べて増大する。この結果、前記
消費電力(Wb)は、前記消費電力(WR’)より大き
くなる。前記消費・電力(WL)と(WR)との差(W
L −WR)は、減算器10によって演算され、前記差
(WL−WR)が零になるよ動される。
However, as shown in Figure (B), if the center between the left and right nozzles 2A, 2B is shifted to the left from the center in the groove width direction, the right side weld protrudes from the lower end 2'B of the right nozzle 2B. The length IB) of the wire 3B is longer than the length JA) of the left welding wire 3A protruding from the lower ends 2'A of the two left nozzles. Here, left and right arc 6
Assuming that the power consumed to generate A and 6B is equal,
Since the electric resistance increases as the welding wire becomes longer, the current flowing through the left welding wire 3A increases compared to the current flowing through the right welding wire 3B. As a result, the power consumption (Wb) becomes larger than the power consumption (WR'). The difference (W) between the above consumption/power (WL) and (WR)
L - WR) is calculated by the subtractor 10 and is moved so that the difference (WL - WR) becomes zero.

一方、同図(C)に示すように、左側および右側ノズル
2A、2B間の中央部が、開先幅方向中央部より右側に
ずれた場合にも、上述した場合と同様の原理によって、
左側および右側ノズル2A、2Bは、〔発明の効果〕 以上説明したように、この発明によれば、簡単且つ正確
に開先倣いが行なえるといったきわめて有用な効果がも
たらされる。
On the other hand, as shown in the same figure (C), even when the center part between the left and right nozzles 2A and 2B is shifted to the right side from the center part in the groove width direction, based on the same principle as in the above case,
[Effects of the Invention] As described above, the present invention provides the extremely useful effect of easily and accurately performing groove tracing.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、この発明の一実施態様のブロック図、第2図
(A)は、左側および右側ノズル間の中央部が、開先幅
方向中央部と一致している状態を示す正面図、同、(、
B)4図は、前記ノズル間の中央部が開先幅方向中央部
より左側にずれている状態を示す正面図、同(C)図は
、前記ノズル間の中央部が開先幅方向中央部より右側に
ずれている状態を示す正面図、第3図は、従来の2電極
ガスシールドアーク溶接法を示す正面図である。図面に
おいて、1・・・被溶接材、    2人・・・左側ノ
ズル、2B・・・右側ノズル、   3A・・・左側溶
接ワイヤ、3B・・・右側溶接ワイヤ、  4・・・溶
接電源、5A・・・左側ワイヤ供給子 5B・・・右側
ワイヤ供給モータ、         −タ、 6A・・・左側アーク、   6B・・・右側アーク、
7A・・・左側電力検出器、 7B・・・右側電力検出
器、8A・・・左側電流検出器、 8B・・・右側電流
検出器、9A・・・左側電圧検出器、 9B・・・右側
電圧検出器、10・・・減jE 器、      11
・・・ノズル駆動モータ。
FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2(A) is a front view showing a state in which the center between the left and right nozzles coincides with the center in the width direction of the groove; same,(,
B) Figure 4 is a front view showing that the center part between the nozzles is shifted to the left side from the center part in the groove width direction, and Figure (C) is a front view showing that the center part between the nozzles is shifted to the left side than the center part in the groove width direction. FIG. 3 is a front view showing a conventional two-electrode gas-shielded arc welding method. In the drawings, 1... Material to be welded, 2 people... Left nozzle, 2B... Right nozzle, 3A... Left welding wire, 3B... Right welding wire, 4... Welding power source, 5A ...Left wire feeder 5B...Right wire feed motor, -ta, 6A...Left side arc, 6B...Right side arc,
7A...Left side power detector, 7B...Right side power detector, 8A...Left side current detector, 8B...Right side current detector, 9A...Left side voltage detector, 9B...Right side Voltage detector, 10...reducer, 11
...Nozzle drive motor.

Claims (1)

【特許請求の範囲】[Claims] 被溶接材の開先幅方向に間隔をあけて左側ノズルおよび
右側ノズルを設け、前記左側ノズルおよび右側ノズルを
通して前記開先に向けて左側溶接ワイヤおよび右側溶接
ワイヤをシールドガスと共に供給し、前記左側溶接ワイ
ヤの先端と前記被溶接材との間に左側アークを発生させ
、前記右側溶接ワイヤの先端と前記被溶接材との間に右
側アークを発生させ、前記左側ノズルおよび前記右側ノ
ズルを前記開先にそつて一体的に移動させて、前記被溶
接材を溶接するに際して、前記左側溶接ワイヤで消費さ
れる電力(W_L)と前記右側溶接ワイヤで消費される
電力(W_R)との差(W_L−W_R)を演算し、そ
して、前記差(W_L−W_R)が零になるように前記
左側ノズルおよび前記右側ノズルを一体的に前記開先の
幅方向に移動させることを特徴とする、2電極ガスシー
ルドアーク溶接における開先倣い方法。
A left nozzle and a right nozzle are provided at intervals in the groove width direction of the material to be welded, and a left welding wire and a right welding wire are supplied together with a shielding gas toward the groove through the left nozzle and right nozzle, and A left side arc is generated between the tip of the welding wire and the workpiece, a right side arc is generated between the right side welding wire tip and the workpiece, and the left nozzle and the right nozzle are opened. The difference (W_L) between the power consumed by the left side welding wire (W_L) and the power consumed by the right side welding wire (W_R) when welding the materials to be welded by moving them together along the -W_R), and the left nozzle and the right nozzle are integrally moved in the width direction of the groove so that the difference (W_L-W_R) becomes zero. Groove tracing method in gas shielded arc welding.
JP19773085A 1985-09-09 1985-09-09 Groove profiling method in two electrode gas shielded arc welding Pending JPS6257773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19773085A JPS6257773A (en) 1985-09-09 1985-09-09 Groove profiling method in two electrode gas shielded arc welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19773085A JPS6257773A (en) 1985-09-09 1985-09-09 Groove profiling method in two electrode gas shielded arc welding

Publications (1)

Publication Number Publication Date
JPS6257773A true JPS6257773A (en) 1987-03-13

Family

ID=16379385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19773085A Pending JPS6257773A (en) 1985-09-09 1985-09-09 Groove profiling method in two electrode gas shielded arc welding

Country Status (1)

Country Link
JP (1) JPS6257773A (en)

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