JPH03238197A - Formation of flat penetration bead for tig welding - Google Patents
Formation of flat penetration bead for tig weldingInfo
- Publication number
- JPH03238197A JPH03238197A JP3259390A JP3259390A JPH03238197A JP H03238197 A JPH03238197 A JP H03238197A JP 3259390 A JP3259390 A JP 3259390A JP 3259390 A JP3259390 A JP 3259390A JP H03238197 A JPH03238197 A JP H03238197A
- Authority
- JP
- Japan
- Prior art keywords
- backing
- tig welding
- welding
- bead
- ceramics
- 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 32
- 239000011324 bead Substances 0.000 title claims abstract description 28
- 230000035515 penetration Effects 0.000 title abstract 3
- 230000015572 biosynthetic process Effects 0.000 title 1
- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 239000010953 base metal Substances 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はＴ１あるいはＴ１合金よりなる薄板母材端面を
向き合せて、各種開先を構成し、該開先部を突合せてＴ
ＩＧ溶接を行った場合に、極めて平坦かつ美麗な裏波ビ
ードを形成する方法に関するものである。Detailed Description of the Invention (Industrial Field of Application) The present invention involves forming various grooves by facing the end surfaces of a thin plate base material made of T1 or T1 alloy, and forming a T by abutting the grooves.
This invention relates to a method for forming extremely flat and beautiful Uranami beads when IG welding is performed.
（従来の技術）
母材をＴＩＧ溶接する場合、目的に応じて端部型、■型
などの開先での溶接は、片側からの確実る熱的影響やガ
スの発生等によって、欠陥が発生しやすく、目的に応じ
たシビャーな溶接条件が選定される。(Conventional technology) When TIG welding base metals, welding with a groove such as an edge type or ■ type depending on the purpose can cause defects due to certain thermal effects or gas generation from one side. Easy to use and severe welding conditions are selected according to the purpose.
このようなＴＩＧ溶接における最適溶接条件は、溶接欠
陥の発生防止と、継手性能の安定性から裏波ビード形状
により判断されると云ってよいが、従来は、溶接部は継
手としての性能が重視されがちであって、この性能が満
足されることで足りていたが、最近では、溶接管やベロ
ーズ、その他装飾品類などの薄手製品においては、溶接
継手部をも含めて加工することから、ビード厚みと母材
厚みをはｙ等しくすることが要望されている。It can be said that the optimal welding conditions in TIG welding are determined by the Uranami bead shape from the viewpoint of preventing weld defects and stability of joint performance, but conventionally, the performance of the welded part as a joint was important. However, recently, in thin products such as welded pipes, bellows, and other decorative items, welded joints are also processed, so bead It is desired that the thickness and the base material thickness be equal to y.
ビード形状によっては、溶接後機械切削により、母材と
同一厚みに加工することが可能であるが、細い管状物な
どでは、管内面の裏波ビードを平坦化するにはビードハ
ンマーによる加工方法または冷間引抜等による方法しか
なく、管内の誘導や加工の確実性等に複雑な手段を用い
なければならないため、簡易な方法が強く求められてい
る。Depending on the bead shape, it is possible to process the bead to the same thickness as the base metal by mechanical cutting after welding, but for thin tubular objects, it is possible to flatten the uranami bead on the inner surface of the tube by using a bead hammer or machining method. There is a strong need for a simple method because the only method available is cold drawing, which requires the use of complicated means for guiding the inside of the pipe and ensuring reliability of processing.
（発明が解決すべき課題）
本発明は上述した要望を充たすべく、ＴＩＧ溶接する部
祠、特に薄手製品の突合せＴＩＧ溶接にあたって、ビー
ド加工を施すことなく、平坦な裏波ビードを形成する方
法を提供することを目的とするものである。(Problems to be Solved by the Invention) In order to satisfy the above-mentioned needs, the present invention provides a method for forming a flat Uranami bead without performing bead processing when TIG welding parts, especially butt TIG welding of thin products. The purpose is to provide
（課題を解決するための手段）
本発明は上記目的を達成するために、
（１）ＴｉあるいはＴｉ合金よりなる薄板母材端部間に
開先を形成してＴＩＧ溶接を行うに際し、開先裏面に高
耐熱、断熱性セラミックスよりなる裏あてを密着させる
ことを特徴とするＴＩＧ溶接における平坦な裏波ビード
の形成法、（２）高耐熱、断熱性セラミックスよりなる
裏あてを、円筒状に形成し、照臭あてか、開先裏面に沿
って回転移動することを特徴とする請求項１記載のＴＩ
Ｇ溶接における平坦な裏波ビードの形成法、
（３）裏あてがＡ、Ｑ ２０３系、５ｉＯ７系、ＭｇＯ
系あるいはＺ ｒ Ｏ，系から選ばれたセラミックスで
あることを特徴とする請求項１記載のＴＩＧ溶接におけ
る平坦な裏波ビードの形成法。(Means for Solving the Problems) In order to achieve the above objects, the present invention provides: (1) When performing TIG welding by forming a groove between the ends of a thin plate base material made of Ti or Ti alloy, the groove A method for forming a flat uranami bead in TIG welding, which is characterized by closely adhering a backing made of highly heat-resistant and heat-insulating ceramics to the back surface, (2) forming a backing made of highly heat-resistant and heat-insulating ceramics into a cylindrical shape; TI according to claim 1, characterized in that the TI is formed and rotated along the back surface of the groove.
Method for forming a flat uranami bead in G welding, (3) Backing is A, Q 203 series, 5iO7 series, MgO
2. The method for forming a flat uranami bead in TIG welding according to claim 1, wherein the ceramic is selected from the group consisting of Z.sub.rO and Z.sub.rO.
以下に本発明の詳細な説明する。The present invention will be explained in detail below.
一般に裏あて金としては銅板が用いられている。Generally, a copper plate is used as the backing metal.
銅は熱伝導がよく、溶接部の冷却効率もよくて、それな
りの効果があり、開先部に密着して使用する。その部分
は良好な裏波ビードが形成されやすいように、シールド
ガスが充分に裏波ビードをつ＼み込み、シールドされる
と共に冷却されるようになっている。また、パイプの溶
接には、裏あてリングを内部に溶接する場合もあるが、
この方法ではルート割れが生じやすい欠点をもっている
。Copper has good heat conductivity and good cooling efficiency for welded parts, so it has certain effects and should be used in close contact with the groove. In order to easily form a good Uranami bead in that area, the shielding gas sufficiently fills the Uranami bead, and the bead is shielded and cooled. Also, when welding pipes, a backing ring may be welded inside.
This method has the disadvantage that root cracks tend to occur.
本発明は高温耐熱性および断熱性を有するセラミックス
板を、裏あてとして直接開先部分に当て、ＴＩＧ溶接す
ることに特長を有するものであって、これによって裏波
ビードが極めて平坦に形成てきる。The present invention is characterized in that a ceramic plate having high temperature resistance and heat insulation properties is applied directly to the groove part as a backing and TIG welded, thereby forming an extremely flat Uranami bead. .
第１図（ａ） 、 （ｂ）は本発明の一実施例であって
、母材１．１′の溶接部２裏面に、セラミックス板３（
ａ図）あるいはセラミックス粉（ｂ図）を裏あてした状
態を示している。図中４は押え金である。このように高
耐熱性、および高断熱性のセラミックスを用いることに
よって、アークを開先底部まで十分に達するように延ば
して溶接ができるため、そして、母材板面に裏あて面が
存在しているため、裏波ビードが確実に且つ母料裏面と
はゾ同−面に平坦に生成できる。FIGS. 1(a) and 1(b) show an embodiment of the present invention, in which a ceramic plate 3 (
Figure a) or ceramic powder (Figure b) is shown on the back. 4 in the figure is a presser foot. By using ceramics with high heat resistance and high heat insulation properties, welding can be performed by extending the arc sufficiently to reach the bottom of the groove, and there is a backing surface on the base metal plate surface. Therefore, the underwave bead can be reliably generated flat and on the same plane as the back surface of the matrix.
第２図（ａ）、（ｂ）はパイプの溶接における本発明の
実施例を示すもので、鋼管５を突合せ溶接するに際し、
その突合せ溶接溶着点６ての鋼管内ビード形成部に、ロ
ール状のセラミックス７を配置し、溶着点６の移動にな
らって、セラミックスロール７を回転移動させるもので
ある。第２図（ｂ）は、同図（ａ）のＡ−Ａ線断面を示
すもので、セラミックスロール６の表面は、鋼管５の溶
接溶着点裏面に密着し、第１図の例と同様に、裏波ビー
ドを平坦に形成することができる。FIGS. 2(a) and 2(b) show an embodiment of the present invention in pipe welding. When butt welding steel pipes 5,
A roll-shaped ceramic 7 is arranged at the bead forming portion in the steel pipe at the butt welding welding point 6, and the ceramic roll 7 is rotated in accordance with the movement of the welding point 6. FIG. 2(b) shows a cross section taken along the line A-A in FIG. 2(a), and the surface of the ceramic roll 6 is in close contact with the back surface of the welding point of the steel pipe 5, similar to the example in FIG. , it is possible to form a flat Uranami bead.
本発明において、裏あて板、あるいはロールは、高耐熱
、断熱性セラミックスであれば、特にその構成成分を特
定せず使用できるが、Ａρ２０３系、Ｓｉｇｈ系、Ｍｇ
Ｏ系、Ｚｒ０Ｊの何れかのセラミックスが好ましい。ま
た、裏あてには、板状に限らず、粒状セラミックスであ
ってもよい。この場合は支持金物により保持されて使用
に供することができる。In the present invention, the backing plate or roll may be made of highly heat-resistant and heat-insulating ceramic without specifying its constituent components;
Either O-based or Zr0J ceramics are preferred. Further, the backing material is not limited to a plate shape, and may be made of granular ceramics. In this case, it can be used while being held by the supporting hardware.
（発明の効果）
以上説明したように、本発明は高温耐熱性、および断熱
性のセラミックスをＴＩＧ溶接、特に薄物製品溶接の裏
あて材に使用することにより、裏波ビードが平坦かつ美
麗に生威し、母材厚と同等のビード形成がなされるため
、溶接部を含めて加工することが極めて容易となる。(Effects of the Invention) As explained above, the present invention uses high-temperature heat-resistant and heat-insulating ceramics as a backing material for TIG welding, especially thin product welding, so that a smooth and beautiful Uranami bead can be produced. Since the bead is formed to have the same thickness as the base metal, it is extremely easy to process the welded part, including the welded part.
第１図は本発明の一使用態様を示す説明図、第２図（ａ
）は本発明を他の例（鋼管溶接）に使用した説明図、同
図（ｂ）は（ａ）のＡ−Ａ断面図を示す。FIG. 1 is an explanatory diagram showing one mode of use of the present invention, and FIG.
) is an explanatory diagram in which the present invention is used in another example (steel pipe welding), and (b) is a cross-sectional view taken along line AA in (a).
Claims (3)
開先を形成してＴＩＧ溶接を行うに際し、開先裏面に高
耐熱、断熱性セラミックスよりなる裏あてを密着させる
ことを特徴とするＴＩＧ溶接における平坦な裏波ビード
の形成法。(1) When TIG welding is performed by forming a groove between the ends of a thin plate base material made of Ti or Ti alloy, a backing made of highly heat-resistant and heat-insulating ceramic is brought into close contact with the back side of the groove. A method for forming a flat Uranami bead in TIG welding.
円筒状に形成し、該裏あてが、開先裏面に沿って回転移
動することを特徴とする請求項１記載のＴＩＧ溶接にお
ける平坦な裏波ビードの形成法。(2) A backing made of highly heat-resistant and heat-insulating ceramics,
2. The method for forming a flat Uranami bead in TIG welding according to claim 1, wherein the bead is formed into a cylindrical shape and the backing member rotates along the back surface of the groove.
Ｏ系あるいはＺｒＯ＿２系から選ばれたセラミックスで
あることを特徴とする請求項１記載のＴＩＧ溶接におけ
る平坦な裏波ビードの形成法。(3) Backing is Al_2O_3 series, SiO_2 series, Mg
2. The method for forming a flat Uranami bead in TIG welding according to claim 1, wherein the ceramic is selected from O-based or ZrO_2-based.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3259390A JPH03238197A (en) | 1990-02-15 | 1990-02-15 | Formation of flat penetration bead for tig welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3259390A JPH03238197A (en) | 1990-02-15 | 1990-02-15 | Formation of flat penetration bead for tig welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03238197A true JPH03238197A (en) | 1991-10-23 |
Family
ID=12363158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3259390A Pending JPH03238197A (en) | 1990-02-15 | 1990-02-15 | Formation of flat penetration bead for tig welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03238197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08174214A (en) * | 1994-12-26 | 1996-07-09 | Shinkurushima Dock:Kk | Butt welding method and patching material used to this method |
-
1990
- 1990-02-15 JP JP3259390A patent/JPH03238197A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08174214A (en) * | 1994-12-26 | 1996-07-09 | Shinkurushima Dock:Kk | Butt welding method and patching material used to this method |
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