JPS58187262A - Multielectrode arc welding method - Google Patents

Abstract

PURPOSE:To stably execute multielectrode are welding without being influenced by a temperature rise of a material to be welded, by measuring a temperature of the material to be welded, and executing the welding, controlling a welding condition of an electrode in accordance with its value. CONSTITUTION:A temperature signal measured by a temperature detector 17 constituted of a lens 18 and a detector 19 is sent to a temperature controlling circuit 21 through an amplifier 20. The circuit 21 stores a mean temperature within a specified time after welding is started, and sends a welding current drop signal corresponding to a temperature difference to a controlling circuit 13, when a temperature of a material to be welded 1 becomes higher than the mean temperature. The circuit 13 reduces a welding current to be supplied to a non- consumble electrode 5 in accordance with a signal value, and simultaneously, applies a switching signal to switching elements 9, 10, 11 and 12. As a result, an output from a DC power source 8 is switched to the electrode 5 and a wire 7 of a consumable electrode 3 alternately by the elements 9, 10, 11 and 12. A current of the electrode 3, however, is made to keep constant.

Description

【発明の詳細な説明】 本発明は、＊ｒｙｔな多電極アーク溶接方法に係り、待
にＩ＃＝泊れｌｆｔ懐とＹ門札電極に交互に溶接電泥會
供帖しながら溶接を行うアーク溶接法に係り、％にｇＬ
浴沫材の温良上昇にｒ智さｊＬることなく、安建し′ｆ
ｃ溶接部會侍る方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a *ryt multi-electrode arc welding method, in which arc welding is carried out while alternately applying welding electrodes to I# = night lft pocket and Y gate electrode. Regarding welding method, gL in %
It was safely erected without being overwhelmed by the rise in temperature of the bathing material.
c) Regarding the method of attending a welding department meeting.

Ｙ８札電極と非消耗電極を組付ぜ、交互に浴嶺亀流ケ供
帽して溶接を行う方法（以下、スイッチングアーク＃蝋
法と配す）は、％Ｆ第８６９６１７ｇ及び特開昭５４−
１００９５０号に記載さ扛ているエフに、溶込み−さ及
び溶接速度か顯加するので、＾能率溶接法として用いら
ｊしている。このスイッチングアーク溶接法を用いて、
パイプの周溶接及び長尺物等の浴接を行うと、第１＠ｌ
に示すように＊接進行に伴い被溶接材の温度が上昇し浴
接姑部に比べ終端部では被ｔ＠縁材の温度が大きく異な
り、−一乗件では、終端部は溶融過大となυ、溶路ち等
の溶接不良が発生する。そのため、溶接条件のプログラ
ム制御ｉｐ勢を行い浴接不良の発生ケ防止してい友。し
かし、このスイッチングアーク溶接法は、非油ＰＩｌ：
を極と油柱１１慣ｒ有丁ゐので、制御因子が多く、溶接
条件の選定が錘しい。そのため、条件の設定に多くの労
力と時…ｊを必貴とする。The method of assembling a Y8 electrode and a non-consumable electrode and welding them alternately (hereinafter referred to as the switching arc method) is described in %F No. 869617g and Japanese Patent Application Laid-Open No. 1973. −
Since penetration depth and welding speed are increased compared to the F described in No. 100950, it is used as an efficient welding method. Using this switching arc welding method,
When circumferentially welding pipes or bath welding long objects, etc., the first @l
As shown in *, the temperature of the material to be welded rises as the weld progresses, and the temperature of the edge material at the terminal end is significantly different from that at the bath welding section. Welding defects such as welding and welding may occur. Therefore, program control of welding conditions is carried out to prevent the occurrence of poor bath contact. However, this switching arc welding method uses non-oil PIl:
Since the pole and the oil column have 11 inertia, there are many control factors and selection of welding conditions is difficult. Therefore, setting the conditions requires a lot of effort and time.

また、条件の選定が悪いと、Ｙ８札奄極の溶融が不安定
となり、溶着量の不足、浴接欠陥の発生寺の間亀が生じ
る。In addition, if the conditions are improperly selected, the melting of the Y8 Sapphire electrode becomes unstable, resulting in insufficient welding amount and the occurrence of bath welding defects.

本発明の目的は、光学めるいは他のＳ−＋測手段を用い
て、仮溶接材の温度１創定し、その値に基ついて、非消
耗電極のｆＩ＃襞条件を制御することにより、仮溶接材
の温度上昇に影響さすることなく、安定した＃接部伊得
る方法を提供するにある。The object of the present invention is to establish the temperature 1 of the temporary welding material using optical measurement or other S-+ measuring means, and to control the fI# fold condition of the non-consumable electrode based on that value. The object of the present invention is to provide a method for obtaining a stable joint without being affected by the temperature rise of the temporarily welded material.

スイツテンクアーク溶接汰は非（ｎ耗亀憔に供給−ｆる
溶接電流と、消耗電極に供給する溶接−流が巧虫立に市
１］蜘できる。そのため、ｍ粍１！極の浴恢電流會一定
にし、非Ｙ８耗電極の溶接亀流倉変え扛は、ワイヤの浴
融型か一定で入熱のみ変えることができるので浴虐蓋を
変えずに、浴込み童たけ変化させることができる。すな
わち、被溶接材の温度が上昇して浴込みが増加すると、
そｒに応じて、非消耗電極の溶接１１Ｌ流會低下さぜる
ようにすｎは、浴込みは當に一定に保つことができる。The welding current supplied to the consumable electrode and the welding current supplied to the consumable electrode are produced in a non-conductive manner.Therefore, the welding current supplied to the consumable electrode is precisely controlled. The current is kept constant, and the welding tank with a non-wearing Y8 electrode is a bath melting type of wire, and only the heat input can be changed with a constant current, so it is possible to change the bathing temperature without changing the bathing lid. In other words, when the temperature of the material to be welded rises and the amount of bath increases,
Depending on the temperature, the welding 11L flow rate of the non-consumable electrode is reduced, so that the flow rate can be kept constant.

しがも、消れ電懐の溶接電流は一定であるので、油柱［
憔ワイヤのｍ−は非常に安定した状態に珠っことができ
る。こ扛らのことより、仮溶接材の温度を光字めるいは
他の針側手段で測定し、その埴に羞ついて、非消耗′ｗ
Ｌ極の浴接電流を制卸する工うＣ（する。However, since the welding current of a flashlight is constant, the oil column [
The m- of the wire can be held in a very stable state. For these reasons, the temperature of the temporarily welded material is measured with a light or other means on the needle side, and the temperature of the temporary welded material is measured, and the temperature of the temporary welded material is measured, and the temperature of the temporary welded material is measured, and the temperature of the temporary welded material is measured, and the temperature of the temporary welded material is measured, and the temperature of the temporary welded material is measured with a light beam or other means on the needle side.
Work is done to control the bath contact current of the L pole.

第２図は本発明大施例の装置の情成図倉ボす。FIG. 2 is an informational diagram of a device according to a major embodiment of the present invention.

非Ｙ白托電極５と消耗電極のワイヤ７への溶接′電流の
供給は、両電極間のアーク干渉ケ防止するため＠訛電源
８からの出力をスイッチング素子９．１０１１．１２に
絢いて交互に切！ｌｌ候えて谷龜極に供給している。ス
イッチング素子へのν〕換佃号は制御間＠１３から与え
ら扛る。ワイヤ７は、制帥回鮎１４の指令に基つきワイ
ヤ込帽表直１５によって溶像ケ所に送給さｊＬる。The welding current is supplied to the non-Y white electrode 5 and the wire 7 of the consumable electrode in an alternate manner by connecting the output from the power source 8 to the switching element 9.1011.12 in order to prevent arc interference between the two electrodes. Nikiri! I am currently supplying the entire valley. The switching number ν to the switching element is given from the control unit @13. The wire 7 is fed to the melting place by the wire cap table 15 based on the command from the controller 14.

溶接トーチ１６は非油れ電極５とＹ内托竜惨３が組み込
１１Ｎており、非油れ１慄５にはタンクステンｒ用いて
いる。ま友、ＹＰｌ札亀慣３はノズルヶ通してワイヤ７
が送らｎる工うになっている。さらに、両電極と仮溶接
材１，１′の間１０発生しまたγ−り４゜６はシールド
ガスで被わｎる工うになっている。The welding torch 16 is equipped with a non-greasy electrode 5 and a Y-inner pipe 3, and a tank stainless steel is used for the non-greasy part 1. Mayu, YPl tag turtle 3 passes through the nozzle and wire 7
It is supposed to be sent. Furthermore, the gamma curve 10 generated between both electrodes and the temporary welding materials 1 and 1' is covered with shielding gas.

本実Ｊ１例ではシールドガスにＡｒガスを用いた。In this J1 example, Ar gas was used as the shielding gas.

また、非Ｙ内托電他の前方に温度検出器１７が堆りつり
らｎている。諷ＦＩＬ慣出ｉｔユレンズ１８と検出−１
９でＩＩＩ成さ扛ている。ｍ廣恢出器１７は非消耗１Ｌ
他とｍ粍電極で形成さγしる浴鵬グールｈｕ力の仮溶接
材１の温度倉鉤定丁ゐ。温度検出器１７で測定さｎた温
度信号は増幅番２０で増幅さｆＬ温嵐制坤回路２１に送
らｎる。温度制御回路２１では溶接開始から一足時間の
内の平均温腋會記憶し、溶接が進行し、被浴接材のｍ良
が平均温度りり上昇すると、温匿差に応じた浴徽亀流低
下佃号を制御（ロ）路１３に送る。制御回路１３では信
号値に応じ、非消耗電極に供給している浴接電光ｒ瓢少
させるなお、実施例装置の平均温良測定時間は、溶接開
始から７秒とした。また、＃嵌トーチ１６並ひに検出器
１７は図示していないが、走行台車に柩りつけらｒＬ″
Ｃ場り、浴扱巌上ゲ動くことができる工すになっている
。In addition, a temperature detector 17 is installed in front of the non-Y inboard power source. Proverbial FIL practice it Ulens 18 and detection-1
III is completed in 9. m-hiro extractor 17 is non-consumable 1L
The temperature of the temporarily welded material 1, which is formed by the other electrodes, is fixed. The temperature signal measured by the temperature detector 17 is amplified by an amplification number 20 and sent to a thermal storm control circuit 21. The temperature control circuit 21 stores the average temperature within a period of time from the start of welding, and as welding progresses and the average temperature of the welded material rises, the bath temperature decreases according to the temperature difference. The Tsukuda number is sent to the control (b) path 13. In accordance with the signal value, the control circuit 13 reduces the amount of bath contact light supplied to the non-consumable electrodes.The average temperature measurement time of the embodiment apparatus was set to 7 seconds from the start of welding. In addition, although the #fitting torch 16 and the detector 17 are not shown, they are attached to the traveling truck.
The C area is designed so that the bathing area can be moved.

本実施例の装ａを用いて也厚１０１ｍの銅パイプの溶接
を行った。初期溶接未件は、非消耗社慣側は、＃徽１１
Ｌ訛：３５０Ａ、被溶接材と電極先端間の距燦：５ｍ、
電憔的距離：３■陶札篭極浴嫉篭ωｉｌ、：３００Ａ浴
依ワイヤＭＧ９９０（１，６φ）、ワイヤ送鮒運１ｉ　
５．５　ｍ／駆、浴接速匿：２５０簡Ａ職に設定した。Using apparatus a of this example, a copper pipe with a thickness of 101 m was welded. If the initial welding is not completed, please use #11 for the non-consumable company practice side.
L accent: 350A, distance between welded material and electrode tip: 5m,
Electrical distance: 3 ■Tenfuku Gokuyoku Jiego ωil, : 300A Yuyori wire MG990 (1,6φ), Wire sending carp luck 1i
5.5 m/drive, bath contact speed: 250 simple A position.

浴★は、先行倉非油托電憔とし、非γ自札１１！極の直
下より７■前方の温度ケ測建し、井γ内札亀惨の′屯匠
を電１」御し友。第３図は温度検出器で測定し几被溶寮
母材の温良と、非消耗電極の溶＆電流の関係を示す。消
耗１懐の′Ｉ４１．流を一定にし、被溶接母材の温＃を
測定し、温度が一連になるように非消耗電極の電ａｔ制
岬した。その結末、ビード全長、均一など一ド形状が侍
らｊＬ、仮溶接材の温度上昇による溶融過大等も生ぜず
、安定した＃ｒ接を行うことができ友。本実施例は、先
行Ｘ憔を非消耗電極にし九が、材買、形状前によっては
、ｍ耗亀憔としてもよい。ま几、温度の測定法は、他の
方法でもよい。さらに、温度のかわりに、被溶接材の形
状変化等の信号ｒオｌＩ用して、非消耗電極の溶接電流
を制御しても良い。また、非消耗電極の溶接％流のかわ
りに、浴依篭圧、るるいはウィービング幅、回数等ｒ　
％ｊｉＪ　１！Ｉ４１しても艮いことは百う１でもない
。Bath ★ is the first warehouse, non-oil, and 11 non-gamma bills! I measured the temperature 7cm ahead from just below the pole, and took the ``Tunsho'' of Igunai Sapporo to the electrician. Figure 3 shows the relationship between the temperature of the base material to be welded and the melting and current of the non-consumable electrode as measured by a temperature detector. 'I41 of consumption 1 pocket. The flow was kept constant, the temperature of the base material to be welded was measured, and the non-consumable electrode was used to control the temperature so that the temperature was constant. As a result, the overall length of the bead is uniform, the shape of the bead is uniform, and stable #r welding can be performed without excessive melting due to temperature rise of the temporarily welded material. In this embodiment, the leading X-shaped electrode is used as a non-consumable electrode, but depending on the material purchase and shape, it may be replaced with a non-consumable electrode. Other methods may be used to measure the temperature. Further, instead of the temperature, the welding current of the non-consumable electrode may be controlled using a signal such as a change in shape of the material to be welded. In addition, instead of the welding percentage flow of non-consumable electrodes, welding pressure, weaving width, number of times, etc.
%jiJ 1! Even with I41, there is nothing wrong with that.

本発明によｎは、豪溶接劇の温度を検出して、仮溶接材
に与える入熱をｅｗＪ制帥することができるので、４［
［接材の温度が、浴接中に上昇しても浴看量に変えるこ
となく、浴込＋ケ一定に押えることができる。そのため
、＃依が非常に安定し、浴−過大による浴は落ち等の溶
接不良が発生ぜす品實の鳥い浴接部が侍ら扛る。さらに
、浴接条件の設定は、鍛期栄件の今設定丁ｎは良いので
、俵雑なノログラム、ンーケンス等の必要がなくなり浴
嵌作業ロヒ率が向上する。According to the present invention, it is possible to detect the temperature of the welding process and control the heat input to the temporary welding material.
[Even if the temperature of the material in contact rises during bathing, the amount of bathing can be kept constant without changing the amount of bathing. Therefore, the dependence is very stable, and the welding defects such as bath drop due to excessive bathing occur, resulting in extremely poor bath contact parts. Furthermore, since the setting of the bath welding conditions is good at the time of the forging process, there is no need for complicated nologograms, scales, etc., and the rate of bath fitting work is improved.

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

第１図は浴接進行各位置と被＃沫羽の温度の関洸図、第
２図は本発明実施例の装置の構奴図、第３図は本発明実
施例の装置を用いて浴接した場合の被電接材の温度と非
Ｙ８札電極治療亀流の圓係図である。 １・・・被溶接材、２・・・曲先、３・・・消耗１！憔
、４・・・消托゛を極によるアーク、５・・・井消耗１
１ＩＬ惚、６・・・非油れ１！極によるアーク、７・・
・ワイヤ、８・・・直流電源、９．１０，１１．１２・
・・スイッチング素子、１３・・・制帥回路、１４・・
・ワイヤ送胎制（財）回路、１５・・・ワイヤ送給装置
、１６・・・浴接トーチ、１７・・１膚検出器、１８・
・・レンズ、１９・・・検出器、２０・・・増−器、２
１・・・温度制＠１回路。 腟！ 茅３目 く 　　３０ づイ ム１２θ イ尤２４Fig. 1 is a diagram showing the relationship between each position in the progress of bath contact and the temperature of the bath to be bathed, Fig. 2 is a diagram showing the structure of the apparatus according to the embodiment of the present invention, and Fig. 3 is a diagram showing the relationship between the bath contact progress and the temperature of the bath. It is a diagram showing the relationship between the temperature of the electrically connected material and the current of non-Y8 electrode treatment when they are in contact with each other. 1... Material to be welded, 2... Bend end, 3... Consumption 1! Depletion, 4... Extinguishing arc by pole, 5... Well consumption 1
1IL love, 6...non oily 1! Arc due to poles, 7...
・Wire, 8...DC power supply, 9.10, 11.12・
...Switching element, 13...Controller circuit, 14...
・Wire delivery system circuit, 15... Wire feeding device, 16... Bath torch, 17... 1 Skin detector, 18...
... Lens, 19... Detector, 20... Multiplier, 2
1...Temperature control @1 circuit. Vagina! 30 zuim 12θ ii 24

Claims (1)

【特許請求の範囲】 １、被溶接母材の温度を測足し、その値に基づいて、電
極の浴嵌乗件を制製しｌがら浴接することｒ時機とフる
多電極アーク溶接方法。 ２　前記電極は非消耗電極及びＹ門札電極からなり、両
１１記非γ０耗電憔によって＃快電流、＃依電圧、ウイ
ーヒンク嘱、ウィービング回数の少なくとも１つケコン
トロールする特許請求の範囲第１項記載の多電極アーク
溶接方法。[Claims] 1. A multi-electrode arc welding method that measures the temperature of the base material to be welded, creates bath fitting conditions for the electrode based on the measured value, and performs bath welding at the same time. 2. The electrode is comprised of a non-consumable electrode and a Y-gate electrode, and at least one of the following is controlled by the non-γ0 non-consumable electrical discharge described in 11 above, the #dependent voltage, the weaving frequency, and the number of weavings. Multi-electrode arc welding method described.