JPH08206830A - Uranami welding method - Google Patents
Uranami welding methodInfo
- Publication number
- JPH08206830A JPH08206830A JP1831095A JP1831095A JPH08206830A JP H08206830 A JPH08206830 A JP H08206830A JP 1831095 A JP1831095 A JP 1831095A JP 1831095 A JP1831095 A JP 1831095A JP H08206830 A JPH08206830 A JP H08206830A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- welding
- welded
- inert gas
- gas
- 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
Links
- 238000003466 welding Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 8
- 239000011261 inert gas Substances 0.000 claims abstract description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 24
- 239000007789 gas Substances 0.000 abstract description 19
- 239000002184 metal Substances 0.000 abstract description 14
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- 229910052786 argon Inorganic materials 0.000 abstract description 12
- 239000011324 bead Substances 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 239000010949 copper Substances 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
(57)【要約】
【構成】 被溶接物１の開先部２どうしを突合わせ、被
溶接物１どうしの開先部２裏側に、開先部２に対向した
アルゴンガス溜り用の溝３を有する銅製裏当て金４を差
渡した状態で溶接する。
【効果】 開先部裏側に、開先部に対向した不活性ガス
溜り用の溝を有する裏当て部材を差渡した状態で開先部
を裏波溶接すると、溶接トーチ側からシールド用として
供給される不活性ガスが裏当て部材の溝に溜り、この溝
内の不活性ガスがバックシールドガスの機能を果たして
開先部に形成された裏波ビードの酸化を抑えることがで
きるので、特別にバックシールドガスを供給する必要が
なく経済的である。
(57) [Summary] [Structure] The groove portions 2 of the workpieces 1 are butted against each other, and the grooves 3 for accumulating argon gas, which are opposed to the groove portions 2, are provided on the back sides of the groove portions 2 of the workpieces 1. Welding is performed with the copper backing metal 4 having the above-mentioned being passed over. [Effect] If the groove back welding is carried out with the backing member having the groove for the inert gas reservoir facing the groove on the back side of the groove, it is supplied from the welding torch side for shielding. The inert gas that collects accumulates in the groove of the backing member, and the inert gas in this groove functions as a back shield gas, and it is possible to suppress the oxidation of the back bead formed in the groove. It is economical because there is no need to supply back shield gas.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、裏波溶接方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backside welding method.
【０００２】[0002]
【従来の技術】従来のＴＩＧ溶接における裏波溶接で
は、図２に示すように、被溶接物３０の開先部３１裏側
にカバー３２を配置し、このカバー３２に供給管３３を
取付け、この供給管３３からカバー３２内にバックシー
ルド用として、例えば２〜４ｌ／ｍｉｎのアルゴンガス
を供給し、溶接トーチ側からシールド用として例えば２
５ｌ／ｍｉｎのアルゴンガスを供給して開先部３１にア
ルゴンガス雰囲気を作り、裏波ビード３４の酸化を防止
するようにしている。2. Description of the Prior Art In conventional backside welding in TIG welding, as shown in FIG. 2, a cover 32 is arranged on the back side of a groove portion 31 of an object to be welded 30, and a supply pipe 33 is attached to the cover 32. For example, 2 to 4 l / min of argon gas is supplied from the supply pipe 33 into the cover 32 for back shield, and 2 for shield from the welding torch side.
An argon gas atmosphere is created in the groove 31 by supplying 5 l / min of argon gas to prevent the back bead 34 from being oxidized.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の溶接方法で
は、バックシールド用としてのアルゴンガスを、シール
ド用のアルゴンガスとは別に供給しているため不経済で
あるといった課題がある。The above-mentioned conventional welding method has a problem that it is uneconomical because the argon gas for the back shield is supplied separately from the argon gas for the shield.
【０００４】そこで本発明は、上記課題を解決し得る裏
波溶接方法の提供を目的とする。Therefore, an object of the present invention is to provide a backside welding method capable of solving the above problems.
【０００５】[0005]
【課題を解決するための手段】本発明における課題を解
決するための手段は、被溶接物の開先部どうしを突合わ
せ、被溶接物どうしの開先部裏側に、開先部に対向した
不活性ガス溜り用の溝を有する裏当て部材を差渡した状
態で溶接するものである。Means for solving the problems of the present invention are as follows. The groove portions of the objects to be welded are abutted against each other, and the groove portions of the objects to be welded are opposite to each other. The backing member having a groove for accumulating an inert gas is welded in a state of being extended.
【０００６】[0006]
【作用】上記課題解決手段において、開先部どうしを突
合わせて、被溶接物どうしの開先部裏側に、不活性ガス
溜り用の溝を有する裏当て部材を差渡した状態で溶接す
ると、溶接トーチ側からシールド用として供給される不
活性ガスが裏当て金の溝に溜り、この溝内の不活性ガス
がバックシールドガスの機能を果たし、開先部に形成さ
れた裏波ビードの酸化を抑える。In the above means for solving the problems, when the groove portions are abutted to each other and the backing member having the groove for retaining the inert gas is welded to the back side of the groove portions of the objects to be welded, welding is performed. The inert gas supplied from the welding torch side for shielding collects in the groove of the backing metal, and the inert gas in this groove functions as a back shield gas, oxidizing the back bead formed in the groove. Suppress.
【０００７】[0007]
【実施例】以下、本発明の実施例を図１に基づいて説明
すると、これは、ＴＩＧ溶接における裏波溶接方法であ
って、被溶接物（例えば、大径パイプ状部材や水圧鉄
管、大径圧力容器など）１の開先部２どうしを突合わ
せ、被溶接物１どうしの開先部２裏側に、開先部２に対
向したアルゴンガス（不活性ガスの一例）溜り用の溝３
を有する断面コ字形の銅製裏当て金４を差渡した状態で
溶接するものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1, which is a backside welding method in TIG welding, in which an object to be welded (for example, a large-diameter pipe-shaped member, a hydraulic iron pipe, Diameter pressure vessel) 1 groove portions 2 are butted against each other, and a groove 3 for accumulating argon gas (an example of an inert gas) facing the groove portion 2 is provided on the back side of the groove portions 2 of the objects 1 to be welded.
Welding is performed with the copper backing metal 4 having a U-shaped cross-section having a cross section.
【０００８】この状態で溶接トーチ５で開先部２を裏波
溶接すると、溶接トーチ５側からシールド用として供給
されるアルゴンガス７が裏当て金４の溝３に溜り、この
溝３内のアルゴンガス７がバックシールドガスの機能を
果たし、開先部２に形成された裏波ビード６の酸化を抑
えることができる。In this state, when the groove portion 2 is backside welded by the welding torch 5, the argon gas 7 supplied for shielding from the welding torch 5 side is collected in the groove 3 of the backing metal 4, and the inside of this groove 3 is filled. The argon gas 7 functions as a back shield gas, and it is possible to suppress the oxidation of the back bead 6 formed in the groove 2.
【０００９】また銅製の裏当て金４を被溶接物１に当接
させることにより、被溶接物１の裏当て金４との当接部
分の熱が裏当て金４側に逃げて冷却されるので、従来よ
りも大きな電流を用いて溶接することができ、従って、
開先部２に溶着する溶着金属の量を多くすることがで
き、もって、健全で安定した溶接を行うことができる。Further, by bringing the backing metal 4 made of copper into contact with the object to be welded 1, the heat of the contacting part of the object to be welded 1 with the backing metal 4 escapes to the side of the backing metal 4 and is cooled. So it can be welded with a larger current than before, and therefore
It is possible to increase the amount of the deposited metal that is welded to the groove portion 2, so that sound and stable welding can be performed.
【００１０】上記のように、被溶接物１の開先部２どう
しを裏波溶接する際に、開先部２裏側に、アルゴンガス
溜り用の溝３を有する銅製裏当て金４を差渡した状態で
溶接することにより、溶接トーチ５側から供給されたア
ルゴンガスが裏当て金４の溝３に溜るので、バックシー
ルドガスが不要となって経済的であるとともに、裏波ビ
ード６の酸化を抑えることができ、また、被溶接物１の
裏当て金４との当接部分が冷却されるので、従来よりも
大きな電流を用いて溶接しても開先部２の温度が異常に
上昇するのを防止して、パス毎の溶着金属の量を多くで
き、健全で安定した溶接を行うことができる。As described above, when the groove portions 2 of the object to be welded 1 are backside welded, the copper backing plate 4 having the groove 3 for accumulating the argon gas is transferred to the rear side of the groove portion 2. By welding in this state, the argon gas supplied from the welding torch 5 side collects in the groove 3 of the backing metal 4, so back shield gas is not required and it is economical, and the back bead 6 is oxidized. In addition, since the contact portion of the work piece 1 with the backing metal 4 is cooled, the temperature of the groove portion 2 rises abnormally even if welding is performed with a larger current than in the past. It is possible to increase the amount of the deposited metal for each pass, and to perform sound and stable welding.
【００１１】[0011]
【発明の効果】以上の説明から明らかな通り、本発明
は、開先部どうしを突合わせた状態で、被溶接物どうし
の開先部裏側に、開先部に対向した不活性ガス溜り用の
溝を有する裏当て部材を差渡して溶接するものであるの
で、溶接トーチ側から供給された不活性ガスが裏当て金
の溝に溜ってバックシールドガスの機能を果たし、従っ
て、従来のように特別にバックシールドガスを供給する
必要がなく経済的であるとともに、裏波ビードの酸化を
充分に抑えることができる。EFFECTS OF THE INVENTION As is apparent from the above description, according to the present invention, when the groove portions are abutted against each other, the inert gas pools facing the groove portions are provided behind the groove portions of the objects to be welded. Since the backing member having the groove is welded across, the inert gas supplied from the welding torch side collects in the groove of the backing metal and functions as a back shield gas. It is economical because there is no need to supply a back shield gas, and oxidation of the back bead can be sufficiently suppressed.
【図１】本発明の実施例における溶接方法において施工
した溶接部分の断面図である。FIG. 1 is a cross-sectional view of a welded portion constructed by a welding method according to an embodiment of the present invention.
【図２】従来の溶接方法において施工した溶接部分の断
面図である。FIG. 2 is a cross-sectional view of a welded portion constructed by a conventional welding method.
１ 被溶接物 ２ 開先部 ３ 裏当て金の溝 ４ 裏当て金 ５ 溶接トーチ ６ 裏波ビード ７ アルゴンガス 1 Workpiece 2 Groove 3 Backing metal groove 4 Backing metal 5 Welding torch 6 Back bead 7 Argon gas
Claims (1)
溶接物どうしの開先部裏側に、開先部に対向した不活性
ガス溜り用の溝を有する裏当て部材を差渡した状態で溶
接することを特徴とする裏波溶接方法。1. The groove portions of the objects to be welded are butted against each other, and a backing member having a groove for holding an inert gas facing the groove portions is provided behind the groove portions of the objects to be welded. A backside welding method characterized by welding in a state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1831095A JPH08206830A (en) | 1995-02-07 | 1995-02-07 | Uranami welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1831095A JPH08206830A (en) | 1995-02-07 | 1995-02-07 | Uranami welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08206830A true JPH08206830A (en) | 1996-08-13 |
Family
ID=11968049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1831095A Pending JPH08206830A (en) | 1995-02-07 | 1995-02-07 | Uranami welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08206830A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030085230A (en) * | 2002-04-29 | 2003-11-05 | 한국항공우주산업 주식회사 | Welding back-up bar |
| JP2007125573A (en) * | 2005-11-02 | 2007-05-24 | Nippon Sharyo Seizo Kaisha Ltd | Method of joining materials to be joined, joined body and railway vehicle |
| JP2008114233A (en) * | 2006-11-01 | 2008-05-22 | Nippon Sharyo Seizo Kaisha Ltd | Weld joint for laser welding, and welded body |
| WO2012128310A1 (en) | 2011-03-23 | 2012-09-27 | 三菱重工業株式会社 | Turbine rotor and method for producing turbine rotor |
| CN105290571A (en) * | 2015-11-17 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Manual welding device and method for barrel and mounting edge of thin-wall casing |
| WO2018123975A1 (en) * | 2016-12-26 | 2018-07-05 | アイシン・エィ・ダブリュ株式会社 | Rotor core manufacturing method and rotor core |
-
1995
- 1995-02-07 JP JP1831095A patent/JPH08206830A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030085230A (en) * | 2002-04-29 | 2003-11-05 | 한국항공우주산업 주식회사 | Welding back-up bar |
| JP2007125573A (en) * | 2005-11-02 | 2007-05-24 | Nippon Sharyo Seizo Kaisha Ltd | Method of joining materials to be joined, joined body and railway vehicle |
| JP2008114233A (en) * | 2006-11-01 | 2008-05-22 | Nippon Sharyo Seizo Kaisha Ltd | Weld joint for laser welding, and welded body |
| WO2012128310A1 (en) | 2011-03-23 | 2012-09-27 | 三菱重工業株式会社 | Turbine rotor and method for producing turbine rotor |
| CN105290571A (en) * | 2015-11-17 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Manual welding device and method for barrel and mounting edge of thin-wall casing |
| CN105290571B (en) * | 2015-11-17 | 2018-01-16 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of Thin-Wall Outer Casing cylinder and the Manual welding device and method on installation side |
| WO2018123975A1 (en) * | 2016-12-26 | 2018-07-05 | アイシン・エィ・ダブリュ株式会社 | Rotor core manufacturing method and rotor core |
| CN110073580A (en) * | 2016-12-26 | 2019-07-30 | 爱信艾达株式会社 | The manufacturing method and rotor core of rotor core |
| JPWO2018123975A1 (en) * | 2016-12-26 | 2019-10-31 | アイシン・エィ・ダブリュ株式会社 | Rotor core manufacturing method and rotor core |
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