JP3006975B2 - Consumable electrode arc welding machine - Google Patents

Consumable electrode arc welding machine

Info

Publication number
JP3006975B2
JP3006975B2 JP5150962A JP15096293A JP3006975B2 JP 3006975 B2 JP3006975 B2 JP 3006975B2 JP 5150962 A JP5150962 A JP 5150962A JP 15096293 A JP15096293 A JP 15096293A JP 3006975 B2 JP3006975 B2 JP 3006975B2
Authority
JP
Japan
Prior art keywords
welding
signal
voltage
circuit
arc
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 - Fee Related
Application number
JP5150962A
Other languages
Japanese (ja)
Other versions
JPH079138A (en
Inventor
正行 大久保
清吾 萩原
虎文 竹元
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.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co 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 Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP5150962A priority Critical patent/JP3006975B2/en
Publication of JPH079138A publication Critical patent/JPH079138A/en
Application granted granted Critical
Publication of JP3006975B2 publication Critical patent/JP3006975B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Arc Welding Control (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、消耗電極である溶接用
ワイヤと被溶接物である溶接母材との間にアークを発生
させて溶接する消耗電極式アーク溶接機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a consumable electrode type arc welding machine for generating an arc between a welding wire as a consumable electrode and a welding base material as a workpiece to perform welding.

【0002】[0002]

【従来の技術】従来の消耗電極式アーク溶接機の構成例
を図3に示す。図3に示すように、アーク溶接電源1
は、電源を供給するパワー回路としての主回路部2と、
主回路部2の電源供給、停止命令および溶接条件を制御
する制御回路部3で構成されている。
2. Description of the Related Art FIG. 3 shows a configuration example of a conventional consumable electrode type arc welding machine. As shown in FIG.
Is a main circuit section 2 as a power circuit for supplying power,
The control circuit unit 3 controls a power supply, a stop command, and welding conditions of the main circuit unit 2.

【0003】また、ワイヤ電極4は送給モータ5で送ら
れ、通電電極6より案内されて溶接母材7と対向するよ
うになっており、前記主回路部2より出力端子13a,
13bを介して通電電極6と溶接母材7に溶接出力電圧
が印加されるようになっている。
The wire electrode 4 is fed by a feed motor 5 and is guided by a current-carrying electrode 6 so as to face a welding base material 7.
A welding output voltage is applied to the current-carrying electrode 6 and the welding base material 7 through the connection electrode 13b.

【0004】[0004]

【発明が解決しようとする課題】ここで、ワイヤ電極4
と溶接母材7に印加する溶接出力電圧は、溶接時ではワ
イヤ電極4の送給モータ5の送給状態と関係なく、制御
回路部3のみで指令値を設定していたために、送給モー
タ5の送給状態が変動することによりアーク長が変化し
ていた。また、溶接終了時においても、上記と同様に、
ワイヤ電極4の送給状態に関係なく、溶接法、ワイヤ種
類によって個別の指令値を制御回路部3のみで設定して
いたために、各溶接条件下では、ワイヤ電極4の溶接終
了状態が一定にならなかった。
Here, the wire electrode 4
Since the welding output voltage applied to the welding base metal 7 is set to a command value only by the control circuit unit 3 regardless of the feeding state of the feeding motor 5 of the wire electrode 4 at the time of welding, the feeding motor The arc length was changed due to the change of the feeding state of No. 5. Also, at the end of welding, as described above,
Regardless of the feeding state of the wire electrode 4, since the individual command values are set only by the control circuit unit 3 depending on the welding method and the wire type, the welding end state of the wire electrode 4 is constant under each welding condition. did not become.

【0005】そして溶接時では、アーク長の変動によっ
てシールド不良が起き、ブローホールなどが発生し、溶
接欠陥が生じていた。また、溶接終了時においても、ワ
イヤ電極先端に生成される溶融球によって次の溶接開始
時に、溶融球がスパッタとして飛び散ったり、良好なア
ーク発生が行われず、溶接作業が著しく煩雑かつ非効率
なものになっていた。
[0005] At the time of welding, variations in the arc length cause poor shielding, blowholes and the like occur, and welding defects occur. Also, at the end of welding, the molten sphere generated at the tip of the wire electrode causes the molten sphere to scatter as spatter at the start of the next welding, and does not generate a good arc, making the welding operation extremely complicated and inefficient. Had become.

【0006】本発明は、上記従来の問題を解決するもの
で、送給モータの送給状態の変動が生じてもアーク長を
安定させることができ、また、各溶接条件下において
も、溶接終了時のワイヤ電極先端状態を適正に制御する
ことができる消耗電極式アーク溶接機を提供することを
目的とする。
SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and can stabilize the arc length even when the feeding state of the feeding motor fluctuates. It is an object of the present invention to provide a consumable electrode type arc welding machine capable of appropriately controlling the state of the wire electrode tip at the time.

【0007】[0007]

【課題を解決するための手段】上記課題を解決するため
に、本発明の消耗電極式アーク溶接機は、ワイヤ電極と
溶接母材間に溶接電圧を印加する主回路部と、前記ワイ
ヤ電極を送給する送給モータと、前記送給モータの誘起
電圧を電気信号に変換する電圧比例信号発生回路と、前
記ワイヤ電極と溶接母材間のアーク発生を検出する検出
器と、前記主回路部の初期電圧を設定する初期電圧設定
回路と、前記検出器からの信号と前記初期電圧設定回路
からの信号と前記電圧比例信号発生回路からの信号とが
入力され前記検出器からアーク発生を示す信号が入力さ
れるまでは前記初期電圧設定回路からの信号を出力し前
記検出器からアーク発生を示す信号が入力された後は前
記電圧比例信号発生回路からの信号を出力するよう切り
換える切換器と、前記切換器から出力される信号に基づ
いて前記主回路部の溶接出力電圧を制御する制御回路部
とを設けたものである
In order to solve the above-mentioned problems, a consumable electrode type arc welding machine according to the present invention comprises: a main circuit section for applying a welding voltage between a wire electrode and a welding base material;
Feed motor for feeding the feed electrode, and induction of the feed motor
A voltage proportional signal generating circuit for converting a voltage into an electric signal;
Detection to detect arcing between wire electrode and welding base metal
And an initial voltage setting for setting an initial voltage of the main circuit unit
Circuit, a signal from the detector, and the initial voltage setting circuit
And the signal from the voltage proportional signal generation circuit
And a signal indicating the occurrence of an arc is input from the detector.
Until the signal is output from the initial voltage setting circuit until
After the signal indicating arc occurrence is input from the detector
Switch to output the signal from the voltage proportional signal generation circuit.
A switch to be changed, and a switch based on a signal output from the switch.
A control circuit for controlling a welding output voltage of the main circuit.
Are provided .

【0008】[0008]

【作用】上記構成において、溶接時、溶接終了時で、送
給モータの誘起電圧を電圧比例信号発生回路にて変換し
た指令値信号と、初期電圧設定回路からの指令値信号と
を切換器にて切り換えて制御回路部に出力し、この制御
回路部にてワイヤ電極に印加する溶接出力電圧を制御す
るので、溶接時は、送給モータの送給状態に応じたアー
ク長の安定化が図れ、また、溶接終了時には、各溶接条
件下においてもワイヤ電極先端の溶接終了状態を適正に
制御することができるので、ブローホールの発生を防
ぎ、ワイヤ電極先端の溶融球の生成を適正に制御するこ
とができるため、溶接品質および溶接作業効率の向上が
図れる。したがって、溶接の開始から終了まで完璧な一
元化設定を可能とし、溶接品質の向上と、溶接条件の設
定の簡略化に役立ち、脱技能溶接機の実現に貢献でき
る。
[Action] In the above structure, during welding, at the welding completion, the command value signal was manually converted <br/> into a voltage proportional signal generating circuit EMF of the feed motor, a command from the initial voltage setting circuit The value signal is switched by a switch and output to the control circuit.
And controls the welding output voltage you applied to word ear electrodes at circuit portion, the welding time is the arc length of Hakare is stabilized in accordance with the feeding condition of the feed motor, also at the time of the end of welding, the welding Under the conditions, the welding end state of the wire electrode tip can be properly controlled, so that the occurrence of blowholes can be prevented, and the generation of molten spheres at the wire electrode tip can be appropriately controlled. Work efficiency can be improved. Therefore, perfect welding from the beginning to the end of welding
Standardization settings to improve welding quality and set welding conditions.
And contribute to the realization of a de-skilled welding machine.
You.

【0009】[0009]

【実施例】以下、本発明の一実施例について図面を参照
しながら説明する。図1は本発明の一実施例の消耗電極
式アーク溶接機の構成を示すブロック図である。なお、
従来例で示したものと同じ構成部には同一符号を付して
説明する。図1に示すようにアーク溶接電源15は電源
を供給するパワー回路としての主回路部12と、主回路
部12の電源供給停止命令および溶接条件を制御する制
御回路部11と、初期電圧設定回路9と、電圧比例信号
発生回路8と、切換器10より構成されている。またワ
イヤ電極4は送給モータ5で送られ、通電電極6を介し
て溶接母材7に対向するようになっている。そして、主
回路部12より出力電圧は出力端子13a,13bを介
して通電電極6と溶接母材7に印加されるようになって
おり、前記溶接母材7への電圧印加回路にはアーク発生
検出器14を設けている。
An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a consumable electrode type arc welding machine according to one embodiment of the present invention. In addition,
The same components as those shown in the conventional example will be described with the same reference numerals. As shown in FIG. 1, the arc welding power supply 15 includes a main circuit section 12 as a power circuit for supplying power, a power supply stop command for the main circuit section 12, and a control for controlling welding conditions.
It comprises a control circuit section 11, an initial voltage setting circuit 9, a voltage proportional signal generation circuit 8, and a switch 10. Further, the wire electrode 4 is fed by a feed motor 5, and is opposed to the welding base material 7 via the energizing electrode 6. The output voltage from the main circuit section 12 is applied to the current-carrying electrode 6 and the welding base metal 7 via the output terminals 13a and 13b, and the voltage application circuit to the welding base metal 7 generates an arc. A detector 14 is provided.

【0010】前記構成において電圧比例信号発生回路8
は、送給モータ5のモータ誘起電圧を指令値信号に変換
して出力する。また、初期電圧設定回路9は、アークが
発生するまでの出力電圧を設定して指令値信号に変換し
て出力する。これら電圧比例信号発生回路8と初期電圧
設定回路9およびアーク発生検出器14が接続される切
換器10は、送給モータ5がワイヤ電極4を送給し始
め、アークが発生するまでの間の出力電圧指令値を初期
電圧設定回路9の出力に切り換え、アークが発生すれ
ば、アーク発生検出器14から出力される電気信号によ
り、指令値信号を電圧比例信号発生回路8の出力に切り
換える。切換器10によって切り換えられた指令値信号
は、制御回路部11に出力され、この制御回路11はア
ーク溶接電源15の主回路部12の溶接出力電圧を制御
する。そして溶接出力電圧はワイヤ電極4と溶接母材7
の間に印加される。
In the above configuration, the voltage proportional signal generation circuit 8
Converts the motor induced voltage of the feed motor 5 into a command value signal and outputs it. The initial voltage setting circuit 9 sets an output voltage until an arc is generated, converts the output voltage into a command value signal, and outputs the command value signal. The switch 10 to which the voltage proportional signal generating circuit 8, the initial voltage setting circuit 9 and the arc generation detector 14 are connected operates between the time when the feed motor 5 starts feeding the wire electrode 4 and the time when the arc is generated. The output voltage command value is switched to the output of the initial voltage setting circuit 9, and when an arc is generated, the command value signal is switched to the output of the voltage proportional signal generation circuit 8 by the electric signal output from the arc generation detector 14. The command value signal switched by the switch 10 is output to the control circuit unit 11, which controls the welding output voltage of the main circuit unit 12 of the arc welding power supply 15. And the welding output voltage is the wire electrode 4 and the welding base material 7.
Applied during

【0011】さらに詳しく説明すると、図2に示すよう
に、まず時間T0で溶接を行なうために溶接起動を行な
ったとする。このときの溶接出力電圧は、初期電圧設定
回路9からの指令値信号により溶接を開始する。溶接中
時間T1でワイヤ電極4が送給され始め、アークが発生
すれば、アーク発生検出器14からの電気信号により、
電圧比例信号発生回路8から指令値信号を出力して、切
換器10を介して制御回路部11から出力した出力指令
値を溶接出力電圧とする。また、溶接終了時間T2に
て、溶接起動を停止したときに、送給モータ5は慣性に
したがい回転数が下がることにより誘起電圧も下がり始
める。このモータ誘起電圧を各溶接条件によって、電圧
比例信号発生回路8にて切り換え、増幅した指令値信号
を切換器10を介して制御回路部11から出力した出力
指令値を、溶接終了出力電圧とする。また、シールドガ
スの種類により電位傾度は、MIG溶接<MAG溶接<
CO2溶接の順になるため、MIG溶接ほどアーク長は
伸び易くなる。したがって、溶接出力電圧は、MIG溶
接<MAG溶接<CO2溶接の順になるから、電圧比例
信号発生回路8の増幅率を各溶接法ごとにかえている。
More specifically, as shown in FIG. 2, it is assumed that welding is started at time T0 to perform welding. The welding output voltage at this time starts welding according to a command value signal from the initial voltage setting circuit 9. When the wire electrode 4 starts to be fed at the time T1 during welding and an arc is generated, the electric signal from the arc generation detector 14 indicates
A command value signal is output from the voltage proportional signal generation circuit 8, and an output command value output from the control circuit unit 11 via the switch 10 is set as a welding output voltage. Further, when the welding start is stopped at the welding end time T2, the induced voltage starts to decrease due to the rotation speed of the feed motor 5 decreasing according to the inertia. The motor induced voltage is switched by the voltage proportional signal generation circuit 8 according to each welding condition, and an output command value obtained by outputting the amplified command value signal from the control circuit unit 11 via the switch 10 is set as a welding end output voltage. . In addition, the potential gradient depends on the type of the shielding gas, MIG welding <MAG welding <
Since the order is CO2 welding, the arc length is more likely to increase as MIG welding. Accordingly, since the welding output voltage is in the order of MIG welding <MAG welding <CO2 welding, the amplification factor of the voltage proportional signal generation circuit 8 is changed for each welding method.

【0012】以上のように、本実施例では、送給モータ
5の誘起電圧により、溶接出力電圧が制御できるので、
ワイヤ電極4の送給状態の変動にも対応できる溶接が可
能になる。
As described above, in this embodiment, the welding output voltage can be controlled by the induced voltage of the feed motor 5,
Welding that can cope with fluctuations in the feeding state of the wire electrode 4 becomes possible.

【0013】[0013]

【発明の効果】以上のように本発明の消耗電極式アーク
溶接機によれば、ワイヤ電極と溶接母材間に溶接電圧を
印加する主回路部と、前記ワイヤ電極を送給する送給モ
ータと、前記送給モータの誘起電圧を電気信号に変換す
る電圧比例信号発生回路と、前記ワイヤ電極と溶接母材
間のアーク発生を検出する検出器と、前記主回路部の初
期電圧を設定する初期電圧設定回路と、前記検出器から
の信号と前記初期電圧設定回路からの信号と前記電圧比
例信号発生回路からの信号とが入力され前記検出器から
アーク発生を示す信号が入力されるまでは前記初期電圧
設定回路からの信号を出力し前記検出器からアーク発生
を示す信号が入力された後は前記電圧比例信号発生回路
からの信号を出力するよう切り換える切換器と、前記切
換器から出力される信号に基づいて前記主回路部の溶接
出力電圧を制御する制御回路部とを設けたことにより、
ワイヤ電極の送給モータの誘起電圧により溶接出力電圧
を制御するので、溶接時には、送給モータの送給状態の
変動に対応してアーク長を安定させることができ、また
溶接終了時においては、各溶接条件下でもワイヤ電極の
溶接終了状態を常に一定にすることができる。したがっ
て、溶接の開始から終了まで完璧な一元化設定を可能と
し、溶接品質の向上と、溶接条件の設定の簡略化に役立
ち、脱技能溶接機の実現に貢献できる。このように溶接
出力電圧を制御する場合は、送給モータの回転速度を制
御する場合に比べて、制御対象が目的値に到達するまで
のタイムラグを小さくでき制御応答速度に優れアーク長
さ制御を即時に実行することができる。 また、前述の消
耗電極式アーク溶接機において、前記電圧比例信号発生
回路を、その増幅率が溶接母材のシールドガスに応じて
切り換えられるようにした場合では、シールドガスが異
なる各種の溶接法においても前述の効果を実現すること
ができる。
As described above, according to the consumable electrode type arc welding machine of the present invention, the main circuit section for applying a welding voltage between the wire electrode and the welding base material, and the feeding module for feeding the wire electrode.
And the induced voltage of the feed motor to an electric signal.
Voltage proportional signal generating circuit, the wire electrode and a welding base material
A detector for detecting the occurrence of an arc between the first and second main circuits;
An initial voltage setting circuit for setting an initial voltage; and
Signal and the signal from the initial voltage setting circuit and the voltage ratio
Example A signal from a signal generation circuit is input and the signal is output from the detector.
The initial voltage until a signal indicating arcing is input
Outputs signal from setting circuit and generates arc from detector
After the signal indicating the voltage is input, the voltage proportional signal generation circuit
A switch for switching to output a signal from the
Welding of the main circuit portion based on a signal output from the heat exchanger.
By providing a control circuit unit that controls the output voltage,
Since the welding output voltage is controlled by the induced voltage of the feed motor of the wire electrode, at the time of welding, the arc length can be stabilized in accordance with the change of the feed state of the feed motor, and at the end of welding, The welding end state of the wire electrode can always be kept constant under each welding condition. Therefore, perfect unified setting is enabled from the start to the end of welding, which contributes to improvement of welding quality and simplification of setting of welding conditions, and can contribute to realization of a de-skilled welding machine. Welding in this way
When controlling the output voltage, control the rotation speed of the feed motor.
Compared to when the control target reaches the target value.
Time lag can be reduced and control response speed is excellent, and arc length
Control can be executed immediately. In addition,
In the wear electrode type arc welding machine, the voltage proportional signal is generated.
Circuits whose amplification factor depends on the shielding gas of the welding base metal
If switching is enabled, the shielding gas may be different.
To achieve the above-mentioned effects in various welding methods
Can be.

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

【図1】本発明の一実施例の消耗電極式アーク溶接機の
ブロック図
FIG. 1 is a block diagram of a consumable electrode type arc welding machine according to one embodiment of the present invention.

【図2】図1の消耗電極式アーク溶接機における溶接出
力電圧のタイミング図
FIG. 2 is a timing chart of welding output voltage in the consumable electrode arc welding machine of FIG. 1;

【図3】従来の消耗電極式アーク溶接機のブロック図FIG. 3 is a block diagram of a conventional consumable electrode type arc welding machine.

【符号の説明】[Explanation of symbols]

4 ワイヤ電極 5 送給モータ 6 通電電極 7 溶接母材 8 電圧比例信号発生回路 9 初期電圧設定回路 10 切換器 11 制御回路部 12 主回路部 13a,13b 出力端子 14 アーク発生検出器 15 アーク溶接電源 Reference Signs List 4 wire electrode 5 feed motor 6 conducting electrode 7 welding base material 8 voltage proportional signal generating circuit 9 initial voltage setting circuit 10 switch 11 control circuit section 12 main circuit section 13a, 13b output terminal 14 arc generation detector 15 arc welding power supply

フロントページの続き (56)参考文献 特開 昭58−187266(JP,A) 特開 昭60−177962(JP,A) 特開 平5−57446(JP,A) 特開 昭50−146547(JP,A) 実開 平4−39569(JP,U) 特公 昭44−24257(JP,B1) (58)調査した分野(Int.Cl.7,DB名) B23K 9/073 B23K 9/10 B23K 9/12 Continuation of the front page (56) References JP-A-58-187266 (JP, A) JP-A-60-177962 (JP, A) JP-A-5-57446 (JP, A) JP-A-50-1446547 (JP, A) , A) Hikaru 4-39569 (JP, U) JP-B-44-24257 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB name) B23K 9/073 B23K 9/10 B23K 9/12

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 ワイヤ電極と溶接母材間に溶接電圧を印
加する主回路部と、前記ワイヤ電極を送給する送給モー
タと、前記送給モータの誘起電圧を電気信号に変換する
電圧比例信号発生回路と、前記ワイヤ電極と溶接母材間
のアーク発生を検出する検出器と、前記主回路部の初期
電圧を設定する初期電圧設定回路と、前記検出器からの
信号と前記初期電圧設定回路からの信号と前記電圧比例
信号発生回路からの信号とが入力され前記検出器からア
ーク発生を示す信号が入力されるまでは前記初期電圧設
定回路からの信号を出力し前記検出器からアーク発生を
示す信号が入力された後は前記電圧比例信号発生回路か
らの信号を出力するよう切り換える切換器と、前記切換
器から出力される信号に基づいて前記主回路部の溶接出
力電圧を制御する制御回路部とを設けた消耗電極式アー
ク溶接機。
1. A main circuit for applying a welding voltage between a wire electrode and a welding base material, and a feeding mode for feeding the wire electrode.
And an induced voltage of the feed motor are converted into an electric signal.
Voltage proportional signal generation circuit, between the wire electrode and the welding base material
A detector for detecting the occurrence of an arc, and an initial state of the main circuit portion.
An initial voltage setting circuit for setting a voltage; and
Signal and the signal from the initial voltage setting circuit and the voltage proportional
The signal from the signal generation circuit is input to the
The initial voltage setting until a signal indicating
Output a signal from the constant circuit to generate an arc from the detector.
After the signal shown is input, the voltage proportional signal generation circuit
A switch for outputting the signals, and the switch
Welding of the main circuit section based on the signal output from the heater.
Control circuit for controlling the power voltage and consumption Worn electrode arc welding machine provided with.
【請求項2】 電圧比例信号発生回路は、その増幅率が
溶接母材のシールドガスに応じて切り換えられるように
した請求項1記載の消耗電極式アーク溶接機。
2. The consumable electrode type arc welding machine according to claim 1, wherein said voltage proportional signal generation circuit has its amplification factor switched according to the shielding gas of the welding base material.
JP5150962A 1993-06-23 1993-06-23 Consumable electrode arc welding machine Expired - Fee Related JP3006975B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5150962A JP3006975B2 (en) 1993-06-23 1993-06-23 Consumable electrode arc welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5150962A JP3006975B2 (en) 1993-06-23 1993-06-23 Consumable electrode arc welding machine

Publications (2)

Publication Number Publication Date
JPH079138A JPH079138A (en) 1995-01-13
JP3006975B2 true JP3006975B2 (en) 2000-02-07

Family

ID=15508246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5150962A Expired - Fee Related JP3006975B2 (en) 1993-06-23 1993-06-23 Consumable electrode arc welding machine

Country Status (1)

Country Link
JP (1) JP3006975B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6287598B2 (en) * 2014-06-05 2018-03-07 株式会社安川電機 Arc welding system, arc welding method and manufacturing method of welded article

Also Published As

Publication number Publication date
JPH079138A (en) 1995-01-13

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