JPS5850192A - Butt welding method for tube - Google Patents

Butt welding method for tube

Info

Publication number
JPS5850192A
JPS5850192A JP14794181A JP14794181A JPS5850192A JP S5850192 A JPS5850192 A JP S5850192A JP 14794181 A JP14794181 A JP 14794181A JP 14794181 A JP14794181 A JP 14794181A JP S5850192 A JPS5850192 A JP S5850192A
Authority
JP
Japan
Prior art keywords
balloons
gas
inert gas
holes
tubes
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
JP14794181A
Other languages
Japanese (ja)
Inventor
Teruo Yamaguchi
山口 照夫
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14794181A priority Critical patent/JPS5850192A/en
Publication of JPS5850192A publication Critical patent/JPS5850192A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE:To improve gas purging effect and to obtain a weld joint with high quality by placing balloons having small holes on the butted side of tubes and sealing the tube with gas discharged from the small holes while supplying pressure gas to contact the balloons with inside of tubes. CONSTITUTION:Rubber balloons 5, 5 having minute holes 5a are put in tubes 1, 1. After fitting grooves 1a, inert gas is let flow in from holes 6 to inflate balloons 5, and the balloons are brought into close contact with inner walls of base metals 1, 1. The insert gas flown into the balloons 5 goes out from holes 5a and replaces the atmosphere in the tubes including the butted part with inert gas in a short time. Under this condition, penetration welding of root part of the grooves 1a is performed. At this time, a small part is left unwelded, and after taking out the balloons 5, the part is filled using a filler rod etc. By this way, back purging can be performed without replacing the whole piping structure with inert gas and without sealing.

Description

【発明の詳細な説明】 従来配賃撫造@等の突合せ溶接で、N先の片貴力)らの
1s便で裏ビードを形成させる方法として、開先のルー
ト間隔をあけ開先の!&側よりlfi接してa波を形成
させる方法がある。この場合浴接−手近傍最面の酸化防
止ならひfcjl波ピードの酸化防止を目的として配管
内rkJ暑こア゛ルゴンガス等の不活性ガスを流しなが
ら溶接を行ない酸化防止を行なう処置があり一般的にバ
ンクパージ法といわれている。第1図に従来のバンクパ
ージ法による配管の突合せ溶接法の溶接前の状態の1例
を示す。
[Detailed Description of the Invention] Conventionally, a method for forming a back bead using 1s of N tip in butt welding, such as by butt welding, is to space the roots of the grooves and open the grooves. There is a method of forming an a-wave by contacting lfi from the & side. In this case, in order to prevent oxidation on the top surface near the bath contact area, welding is performed while flowing an inert gas such as argon gas inside the piping in order to prevent oxidation of the fcjl wave peak. This is commonly referred to as the bank purge method. FIG. 1 shows an example of the state before welding of a conventional butt welding method for pipes using the bank purge method.

図憂こおいて(υは母材、(1a)は母材舎こ設けられ
たV形の開先、(lb)は開先のルート面(lりはルー
ト面間のルート間隔、(4)は配管の1端に取付け・ら
れたパックパージガス用の盲蓋、(2)は配管の他端に
取付けられたバンクパージガス入口用の蓋、(3)は(
2)に設けられたバックパージガス入口用のホースを示
す。
In this case, (υ is the base material, (1a) is the V-shaped groove provided by the base material, (lb) is the root surface of the groove (l is the root spacing between the root surfaces, (4 ) is the blind cover for the pack purge gas attached to one end of the pipe, (2) is the cover for the bank purge gas inlet attached to the other end of the pipe, and (3) is the cover for the bank purge gas inlet attached to the other end of the pipe.
2) shows the hose for the back purge gas inlet.

従来法によれは配管の一端に盲蓋(4)をし、他端力)
ラバツクパージガス入口用ホース(31w =して不活
性ガスを流入させ、突合せ浴償継手部を含む配管内部全
体の大気を不活、性ガスと置換し、不活性ガス雰囲気と
する必狭がある。配管内部が先生Gこ不宿性カス雰囲気
に到達して後、開先(la )のルート面(lb)をア
ーク溶接法にI溶接し、裏波を形成させる。この間、配
管内部は元金に不活性カス芥囲気である必責がある為憂
こ、常(こ不活性カスを流入させておく必責がある。こ
の場合、配管内部の不活性ガス雰囲気の純度が悪けれは
突合せ溶接継中手の内面が溶接熱番こより酸化されたり
、農鼓ヒードの酸化番こよ4jl[ビード発生不拘−が
生ずる。
If the conventional method is used, put a blind cover (4) on one end of the pipe and close the other end)
It is necessary to use the rubber purge gas inlet hose (31W =) to inject inert gas and replace the entire atmosphere inside the piping, including the butt bath compensation joint, with an inert gas, creating an inert gas atmosphere. After the inside of the pipe reaches the inhospitable dust atmosphere, the root surface (lb) of the groove (la) is welded using the arc welding method to form a back wave.During this time, the inside of the pipe remains in its original state. Unfortunately, it is necessary to allow inert gas to flow into the metal.In this case, if the purity of the inert gas atmosphere inside the pipe is poor, butt welding is necessary. The inner surface of the joint joint may be oxidized due to the heat of welding, or the oxidation of the agricultural drum heat may cause bead formation.

ところが従来の配’ms造物は長尺ものが多く突合せ溶
接Sを含む配管内部の大気を光音に不活性ガスで置換す
ること゛はその内容積が大きく大量の不活性ガスを賛す
るのみならず、多くの時開tl′賢する。ま良案作業上
、このように内容積を大きい−のを元金lこ不活性雰囲
気に置換することは不町絽である事が経済的擾こ知られ
ている。光音に置換ができなければ先述した如<1mビ
ードの不均一発生が起こり、品質を看しく低下させるの
みならず、内Ifl酸化により、構造物のV層中に欧化
被捩のは<+SUこよる油配管空気配管等のフィルター
のつまりな起こさせ、配管構造物の磯I2を看しく低下
あるいは損ねるという欠点があった。
However, many of the conventional installation structures are long, and replacing the atmosphere inside the pipes, including the butt welds S, with an inert gas is difficult if the internal volume is large and a large amount of inert gas is required. However, there are many times when it is difficult to understand. It is known that it is economically unwise to replace such a large internal volume with an inert atmosphere. If the optical sound cannot be replaced, uneven formation of <1m beads as mentioned above will occur, which will not only cause a noticeable deterioration in quality, but also cause internal Ifl oxidation to occur in the V layer of the structure. This has disadvantages in that it causes clogging of filters in oil and air pipes, etc., and undesirably lowers or damages the rock I2 of the piping structure.

本発明は上記の如くの欠点に16なされたもので、配管
内全体を不活性ガスと111侯する処置がなく、不活性
ガスシール内容積を小さくし、突合せ継手近傍のみを確
実に不活性ガスwL供し、ガスパージ効米′Ik^め突
合せ浴接ができる方法を提供することV目的とする。
The present invention has been made to address the above-mentioned drawbacks, and there is no need to treat the entire interior of the pipe with inert gas, and the internal volume of the inert gas seal is reduced, ensuring that only the vicinity of the butt joint is filled with inert gas. It is an object of the present invention to provide a method for butt bath welding with gas purge effect.

以下1本発明を図lMo4こボー[−夷九例−こて説明
−fる。
The present invention will be described below in Figure 1Mo4.

142図に於て(5)はゴム風船、(6)はゴム風船(
51に不活性ガスを緘袷するためのホースである。ゴム
風船(5)には砿少な′K(5m)が明けりれている。
In Figure 142, (5) is a rubber balloon, (6) is a rubber balloon (
This is a hose for supplying inert gas to 51. The rubber balloon (5) has a small height (5m).

先ず第2図の即くに開先合せを?T!ようatこ、予め
それぞれの配室母材(1) 、 (1)の内IUこコム
風船(5j 、 (51を入れておくsシミ)る後、第
2図の即く番こ開先を合わせホース16)より不活性カ
ス1に流入させゴム風船(5)(5Jをふくらませ母材
(13、(1)のV3#、に密層させる。
First, match the grooves immediately as shown in Figure 2. T! At this time, after placing the IU Kocom balloons (5j, (51) in each of the chamber base materials (1) and (1) in advance, prepare the grooves shown in Fig. 2). It flows into the inert dregs 1 from the mating hose 16), inflates a rubber balloon (5) (5J) and forms a dense layer on the base material (13, V3# of (1)).

ところがゴムjlL船(5)には威少な人(5a)が明
けらn゛Cいるため曇こ、ゴム風船円の流入不箔性ガス
はその人より抜けるように−っている。したがって、不
油性ガスを流入しIfcけてもゴム風船(5+ l工破
緩することなく母材内−に@膚し続ける。この場合砿少
な′K(5m)の大きさは、ゴム風船(5)が−0機大
きな穴ではrt < 、母材内壁に田漕するだけの内圧
力がゴム風船−〇か、0)るよう、かつ処置以上6C内
圧力が〃)かつてゴム風fdが破裟することのtいよう
に設計する必豊かある。またゴム風船(5)にA−f+
油性ガス#1jllゴム風船151が破aLする機過大
でtくρ)つ、−んで母材内壁と密層しなく fA 4
 a過少であってもいけない。このように丁れば、コム
風船(5−が配量°内で城となり21m1のゴム風紅(
5〕で密せられ九少さダ鄭虜ができふ゛こと憂こなる。
However, because there is a small person (5a) on the rubber boat (5), it is cloudy, and the non-foam gas flowing into the rubber balloon circle is forced to escape through that person. Therefore, even if the non-oily gas flows in and falls, the rubber balloon (5 + l) will continue to be exposed to the inside of the base material without breaking or loosening. 5) In a large hole with -0 machine, rt <, so that the internal pressure that is enough to push the rubber balloon against the inner wall of the base material is -0 or 0), and the internal pressure of 6C is above the treatment. It is necessary to design it so that it is easy to use. Also, A-f+ on the rubber balloon (5)
The oily gas #1jll rubber balloon 151 bursts due to excessive force and does not form a dense layer with the inner wall of the base material fA 4
a It must not be too small. If you hang it like this, it will become a com balloon (5- is a castle within the ration) and will be a 21m1 rubber balloon (
5], I was deeply saddened by the fact that I was secretly taken prisoner.

この時ゴムX釦157に設けられ九人(6a)により不
tIX性ガスが訛出しそいるので、部旙円の大気もその
容積が少さいため6C履嗜閲η)つ少ない菫の不rPi
性ガス麓で7ilS盆に置換される。しかる後に屍元(
la)のルート酸の裏藏俗接を行なう。ただしこの部分
、俗接恢醗こ不活性ガス成人な止めてゴム風船(6pを
収−させ配室内部より外部へ取出丁装置があるのでルー
ト鄭の俗接は、収顧したゴム風船<51が取出せる憂こ
建るたけのわずかの部分を浴接しないで炊しCおく公費
がめる。この部分は、ゴム風船(5i 、 (5Jを取
出し恢′%蕩加棒を便って俗接し埋めれはよい。
At this time, the non-tIX gas is likely to be emitted by the nine people (6a) provided in the rubber
It is replaced by the 7ilS basin at the foot of the gas. After that, the corpse (
Perform the root acid urazozokubutsu of la). However, in this part, the inert gas is used to stop the rubber balloon (6p) from inside the chamber and there is a device for extracting it from the outside. Public funds are used to cook a small portion of the amount that can be taken out without bathing.This portion is buried by using a rubber balloon (5i, good.

以上の様に浴償しようとTる―十を言む配當構造物内全
体を不活性ガス謔挨tすUSこシールする必景はなく、
バックバージがrr itんる。また不枯牲カス置快t
らびlこシール−fる谷慎も少なくて埼むために、より
11こ小清性ガス直洪が汀な入る。
As mentioned above, when trying to compensate by bathing, there is no need to seal the entire interior of the structure with inert gas.
The back barge is rr it. In addition, it is easy to leave the dead scum.
Rabi lko seal-fru Tani Shin is also small and swells, so 11 more small clean gas Naohiro enters.

その細釆として、11こよる内11[l欧化の防止が確
実に汀な入るし、また、嶽改も一冥曇こ確保できる九め
に丁ぐtした品質の配賞構造初疹伍紬手が得りn4.と
いつ作用がある。
As a detailed structure, 11 out of 11 [l] will definitely prevent Europeanization, and will also ensure the best quality of the structure. Got a hand n4. When does it come into play?

なお、ゴム風lid (6)の材買は必−1−シ% 、
ゴムとは眠る処置はtい、ガス圧着こよって押細江のめ
るものであれは本発明の幼木が侍りれる。よた粛2図の
即く醗こkIk+1に:はさんだそれそnのゴム風船(
5)−こ穴(5a)がなくても片1万の風船たけ番こ入
が明いていても不発明の効米が得られる。
In addition, it is necessary to purchase materials for the rubber-like lid (6).
Rubber does not require any treatment, and the young trees of the present invention can be used in anything that is placed under gas pressure. Immediately put on the map of Yotamasu 2 to kIk+1: The sandwiched rubber balloon (
5) - Even if there is no hole (5a) and the number of balloons in the 10,000-piece balloon hole is open, you can still get an inventive rice effect.

以上説明した@壷こ、不発明によ1しば配置構造物の失
曾せ俗11こ1いて、小宿性カスを用いたバックバージ
法曇こよる俗艦な行なう場合、必貴な継:F一部のみを
一実曇こ不@狂カスwIt洪ならび曇こシールができ%
丁ぐれた品質の浴接−手か借りれるという効米がめる。
In addition to the above-mentioned @tsuboko, which is often lost due to uninventiveness, and the vulgarity of the back barge method using small inn dregs, it is necessary to carry out the necessary inheritance. : Only part of F is Kazumi Kumofu@Kyoukasu wIt Hong and Kumoko stickers are made%
High-quality bath dressing - the benefits of being able to use it by hand.

、4. 1向の藺率なa明 第1図は疵米の突合せ俗接方法を行tつ場合の浴僧前の
伏線の一4P4をボ丁図。第2図は本発明の突合せ溶接
方床を行なう場合の溶接面の状廟の−実九例t1mT図
である。
,4. Figure 1 is a diagram showing 14P4 of the foreshadowing before the bathing priest when performing the common method of butting defective rice. FIG. 2 is a t1mT diagram of nine actual examples of the shape of the welding surface when performing the butt welding method of the present invention.

l・・・母材、  la  ・・・開先、  ib  
・・・ルート面、2・・・通、   3・・・ホース 
  4・・・ki蓋、S −・・風船  °6・・・ホ
ース、  5a・・・人。
l...base material, la...bevel, ib
...Root surface, 2...Thread, 3...Hose
4...ki lid, S-...balloon °6...hose, 5a...person.

Claims (1)

【特許請求の範囲】[Claims] iirの突合せ部に°近い内部lこ、不活性ガス供給装
′筺と連通しかつ突合せ部IMII#こ開口T4小穴を
有Tる風船をそnぞれ配置し、この風船Iこ上記装wか
ら圧力ガスを供給してふくらませて前記賃lこ内接させ
ると共jこ小′Kから放出されるカスにより突合せ部を
甘む雷門を大気力)らV−ルドし、しかる後に浴余する
ことを特徴とする肯の突合せ浴接方法。
Inside the abutting part of the IIR, a balloon communicating with the inert gas supply device housing and having a small hole T4 in the abutting part IMII is placed, When the gas is inflated by supplying pressure gas from the ink and inscribed in the abutment, the scum emitted from the abutment part is removed from the atmospheric force by the scum released from the abutment part, and then the bath is left over. This method of butt bathing is characterized by the following.
JP14794181A 1981-09-21 1981-09-21 Butt welding method for tube Pending JPS5850192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14794181A JPS5850192A (en) 1981-09-21 1981-09-21 Butt welding method for tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14794181A JPS5850192A (en) 1981-09-21 1981-09-21 Butt welding method for tube

Publications (1)

Publication Number Publication Date
JPS5850192A true JPS5850192A (en) 1983-03-24

Family

ID=15441519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14794181A Pending JPS5850192A (en) 1981-09-21 1981-09-21 Butt welding method for tube

Country Status (1)

Country Link
JP (1) JPS5850192A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010149163A (en) * 2008-12-26 2010-07-08 Mitsubishi Heavy Ind Ltd Pipe welding method
WO2014014483A1 (en) * 2012-07-18 2014-01-23 Daniel Measurement And Control, Inc. Method for forming a welded seal
CN110369827A (en) * 2019-08-13 2019-10-25 武汉锅炉集团超顺锅炉设备制造有限公司 A kind of boiler press pipeline has barrier argon tungsten-arc welding process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010149163A (en) * 2008-12-26 2010-07-08 Mitsubishi Heavy Ind Ltd Pipe welding method
WO2014014483A1 (en) * 2012-07-18 2014-01-23 Daniel Measurement And Control, Inc. Method for forming a welded seal
US9816850B2 (en) 2012-07-18 2017-11-14 Daniel Measurement And Control, Inc. Method for forming a welded seal
US10591338B2 (en) 2012-07-18 2020-03-17 Daniel Measurement And Control, Inc. Welding fixture
CN110369827A (en) * 2019-08-13 2019-10-25 武汉锅炉集团超顺锅炉设备制造有限公司 A kind of boiler press pipeline has barrier argon tungsten-arc welding process

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