JP2001293598A - Backing for steel tube butt welding, backing coil, and method of use of backing - Google Patents
Backing for steel tube butt welding, backing coil, and method of use of backingInfo
- Publication number
- JP2001293598A JP2001293598A JP2000109115A JP2000109115A JP2001293598A JP 2001293598 A JP2001293598 A JP 2001293598A JP 2000109115 A JP2000109115 A JP 2000109115A JP 2000109115 A JP2000109115 A JP 2000109115A JP 2001293598 A JP2001293598 A JP 2001293598A
- Authority
- JP
- Japan
- Prior art keywords
- backing
- steel pipe
- backing metal
- coil
- butt welding
- 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
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、円形鋼管や角形
鋼管の突き合わせ溶接に使用する裏当て金、裏当て金用
コイルおよび裏当て金の使用方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backing metal used for butt welding circular or square steel pipes, a coil for the backing metal, and a method of using the backing metal.
【０００２】[0002]
【従来の技術】鉄骨建築において、円形や角形の鋼管を
柱として使用し、柱梁接合部にダイヤフラムを用いる場
合には、図４の斜視図に示すように、鋼管21とダイヤフ
ラム22または梁23とダイヤフラム２２を突き合わせ溶接
する必要がある。このような突き合わせ溶接を行うとき
には、図５の正面図に示すように、溶着金属２４や２５
が流出しないように、鋼管２１や梁２３の溶接する側と
は反対側になる裏側に裏当て金２６または２７を使用す
る。2. Description of the Related Art In a steel structure, when a circular or square steel pipe is used as a column and a diaphragm is used at a column-beam joint, as shown in a perspective view of FIG. And the diaphragm 22 must be butt-welded. When such butt welding is performed, as shown in the front view of FIG.
A backing metal 26 or 27 is used on the back side opposite to the side to be welded to the steel pipe 21 or the beam 23 so as not to flow out.
【０００３】このような裏当て金は、当然ながら隙間が
ないように鋼管２１や梁２３に密着する必要があるが、
特に、鋼管21の場合には、円形鋼管では内周面全面にわ
たって曲面となっており、角形鋼管の内周面も四隅角部
は曲面となっているので、鋼管に用いる裏当て金はこれ
らの曲面に沿う形状のものでなければならない。[0003] Such a backing metal must of course be in close contact with the steel pipe 21 and the beam 23 so that there is no gap.
In particular, in the case of the steel pipe 21, the circular steel pipe has a curved surface over the entire inner peripheral surface, and the inner peripheral surface of the square steel pipe also has curved surfaces at the four corners. The shape must conform to the curved surface.
【０００４】このような鋼管の裏当て金の取り付け方法
としては、特開平4-284997号公報に開示されたものがあ
る。As a method of attaching such a backing metal to a steel pipe, there is one disclosed in Japanese Patent Application Laid-Open No. 4-284997.
【０００５】この裏当て金の鋼管への取り付け方法は、
巻き取りドラムから巻き戻したスリットコイルから円筒
状に形成した裏当て金を、角形鋼管内に挿入し、角形鋼
管を軸線を回転の中心として回転させながら、ピンチロ
−ラ−で前記円筒状に形成した裏当て金を内周面に押し
付けながら、順次スポット溶接で固定するものである。The method of attaching this backing metal to a steel pipe is as follows.
A backing metal formed into a cylindrical shape from the slit coil unwound from the winding drum is inserted into a rectangular steel pipe, and the rectangular steel pipe is formed into a cylindrical shape by a pinch roller while rotating the rectangular steel pipe around the axis of rotation. The backing metal is fixed by spot welding sequentially while being pressed against the inner peripheral surface.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上述し
た従来の裏当て金を鋼管に取り付ける方法は、角形鋼管
を回転させたり、裏当て金を円筒状に形成したり、円筒
状の裏当て金を角形鋼管の内周面に押し付けたりする装
置が必要となるので、装置全体が大型のものとなり、狭
い作業現場では使用が困難であるという問題点がある。However, the above-mentioned conventional method of attaching a backing metal to a steel pipe involves rotating a rectangular steel pipe, forming the backing metal in a cylindrical shape, or attaching a cylindrical backing metal to the steel pipe. Since a device for pressing against the inner peripheral surface of the rectangular steel pipe is required, the entire device becomes large, and there is a problem that it is difficult to use it in a narrow work site.
【０００７】この発明は、従来技術の上述のような問題
点を解消するためになされたものであり、狭い作業現場
でも用意に取り付けることのできる鋼管突き合わせ溶接
用裏当て金およびその使用方法を提供することを目的と
している。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the prior art, and provides a backing metal for butt welding of steel pipes and a method of using the same, which can be easily attached even in a narrow work site. It is intended to be.
【０００８】[0008]
【課題を解決する手段】この発明に係る鋼管突き合わせ
溶接用裏当て金は、突き合わせ溶接する鋼管の内周面に
沿って密着するように、長手方向に沿って長手方向と直
交するスリットを複数設けたものである。A backing metal for a butt-welded steel pipe according to the present invention is provided with a plurality of slits perpendicular to the longitudinal direction along the longitudinal direction so as to closely adhere along the inner peripheral surface of the steel pipe to be butt-welded. It is a thing.
【０００９】また、この発明に係る鋼管突き合わせ溶接
用裏当て金の使用方法は、上記鋼管突き合わせ溶接用裏
当て金を、前記スリットを設けた面を外側として、突き
合わせ溶接する鋼管の内周面に沿って密着させるもので
ある。The method of using the backing metal for steel pipe butt welding according to the present invention is as follows. It is to adhere along.
【００１０】また、この発明に係る鋼管突き合わせ溶接
用裏当て金コイルは、上記鋼管突き合わせ溶接用裏当て
金を、前記スリットを設けた面を表側として、コイル状
に巻き取ったものである。The backing metal coil for steel pipe butt welding according to the present invention is obtained by winding the backing metal for steel pipe butt welding in a coil shape with the surface provided with the slit as a front side.
【００１１】また、この発明に係る鋼管突き合わせ溶接
用裏当て金コイルの使用方法は、上記鋼管突き合わせ溶
接用裏当て金コイルをドラムに巻き取り、必要とする長
さだけ巻き戻して切り取り、使用するものである。The method of using the backing coil for steel pipe butt welding according to the present invention is to wind the above backing coil for steel pipe butt welding around a drum, rewind it to a required length, cut it out, and use it. Things.
【００１２】この発明に係る鋼管突き合わせ溶接用裏当
て金は、裏当て金の長手方向に沿って長手方向と直交す
るスリットを複数設けているので、スリット部を中心と
して裏当て金を容易に曲げることができる。そして、隣
り合うスリットを順次同じ方向に曲げていくことによ
り、裏当て金を円形鋼管の内周面に密着した円形形状に
成形することができるとともに、裏当て金をスリット部
を曲げない部分とスリット部を曲げる部分を組み合わせ
た形状に曲げていくことにより、角形鋼管の内周面に密
着した形状に成形することもできる。したがって、鋼管
を突き合わせ溶接をするときに、裏当て金を取り付ける
ための特別な装置を必要とせず、狭い作業現場において
も、裏当て金を容易に取り付けることができる。The backing metal for butt welding steel pipes according to the present invention is provided with a plurality of slits extending in the longitudinal direction of the backing metal at right angles to the longitudinal direction, so that the backing metal can be easily bent around the slit portion. be able to. Then, by bending adjacent slits sequentially in the same direction, the backing metal can be formed into a circular shape in close contact with the inner peripheral surface of the circular steel pipe, and the backing metal can be formed as a portion where the slit portion is not bent. By bending the slit portion into a shape combining the bent portions, the rectangular steel pipe can be formed into a shape that is in close contact with the inner peripheral surface of the rectangular steel tube. Therefore, when performing butt welding of steel pipes, a special device for attaching the backing metal is not required, and the backing metal can be easily attached even in a narrow work site.
【００１３】また、溶接中に発生するガスをスリットを
通して逃がすことができるので、溶接ル−ト部でのブロ
−ホ−ル欠陥の発生を低下させることができる。Further, since gas generated during welding can be released through the slit, the occurrence of blowhole defects in the welding route can be reduced.
【００１４】また、この発明に係る鋼管突き合わせ溶接
用裏当て金コイルは、上記鋼管突き合わせ溶接用裏当て
金を、スリットを設けた面を外側としてコイル状に巻き
取ったものであり、巻き取り、巻き戻しが容易なもので
ある。The backing metal coil for steel pipe butt welding according to the present invention is obtained by winding the above steel pipe butt welding backing into a coil shape with the slit-provided surface outside. It is easy to rewind.
【００１５】また、この発明に係る鋼管突き合わせ溶接
用裏当て金コイルの使用方法は、上記鋼管突き合わせ溶
接用裏当て金コイルをドラムに巻き取り、必要な分だけ
巻き戻して使用するので、裏当て金を無駄無く使用でき
るとともに、裏当て金の管理も容易となる。The method of using the backing coil for steel pipe butt welding according to the present invention is as follows. The backing coil for steel pipe butt welding is wound around a drum and used by rewinding as much as necessary. The money can be used without waste, and the management of the backing money becomes easy.
【００１６】[0016]
【発明の実施の形態】本発明の実施の形態を図面を参照
して説明する。図1は本発明の鋼管突き合わせ溶接用裏
当て金の実施の形態を示す斜視図である。この裏当て金
１は、長手方向に沿って、長手方向と直交するスリット
２を設けている。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a backing metal for steel pipe butt welding of the present invention. This backing metal 1 is provided with a slit 2 that is orthogonal to the longitudinal direction along the longitudinal direction.
【００１７】図２は本発明の鋼管突き合わせ溶接用裏当
て金１の鋼管への取り付け状況を示す断面図であり、
（ａ）は円形鋼管３の内周面に裏当て金１を取り付けた
状態を、（ｂ）は角形鋼管４の内周面の全周にわたって
裏当て金１を取り付けた状態を、（ｃ）は角形鋼管４の
内周面の四隅部に裏当て金１を、直線部に通常の裏当て
金５を取り付けた状態を示す。FIG. 2 is a cross-sectional view showing how the backing metal 1 for butt welding of a steel pipe of the present invention is attached to a steel pipe.
(A) shows a state where the backing metal 1 is attached to the inner peripheral surface of the circular steel pipe 3, (b) shows a state where the backing metal 1 is attached to the entire inner peripheral surface of the rectangular steel pipe 4, and (c). Shows a state in which the backing metal 1 is attached to the four corners of the inner peripheral surface of the rectangular steel pipe 4 and the normal backing metal 5 is attached to the straight portion.
【００１８】図３は長尺に成形した本発明の鋼管突き合
わせ溶接用裏当て金を、巻き取りドラム６にコイル状に
巻き付けた裏当て金コイル７を示す正面図である。この
ように、裏当て金コイル７をドラム６に巻き取っておく
ことにより、１本の長尺裏当て金１から必要とする複数
の裏当て金１を得ることができ、裏当て金１を無駄なく
使用できるとともに、裏当て金１の管理が容易となる。FIG. 3 is a front view showing a backing metal coil 7 in which a long backing metal for butt welding of a steel pipe of the present invention is wound around a winding drum 6 in a coil shape. In this way, by winding the backing metal coil 7 around the drum 6, a plurality of required backing metals 1 can be obtained from one long backing metal 1, and the backing metal 1 can be obtained. It can be used without waste, and the management of the backing metal 1 becomes easy.
【００１９】[0019]
【発明の効果】本発明により、円形や角形の鋼管を突き
合わせ溶接するときの裏当て金を、作業現場が狭くても
鋼管内周面に容易に取り付けることができる。According to the present invention, a backing metal for butt welding circular or square steel pipes can be easily attached to the inner peripheral surface of the steel pipes even if the work site is narrow.
【００２０】また、溶接中に発生するガスをスリットを
通して逃がすことができるので、溶接ル−ト部でのブロ
−ホ−ル欠陥の発生を低下させることができる。Further, since gas generated during welding can be released through the slit, the occurrence of blowhole defects at the welding route can be reduced.
【００２１】また、裏当て金コイルを使用することによ
り、必要に応じて所要の長さの裏当て金を複数得ること
ができるので、裏当て金を無駄なく使用できるととも
に、裏当て金の管理が容易となる。Further, by using the backing coil, a plurality of backing metals of a required length can be obtained as required, so that the backing metal can be used without waste and the backing metal can be managed. Becomes easier.
【図１】本発明の鋼管突き合わせ溶接用裏当て金の実施
の形態を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of a backing metal for steel pipe butt welding of the present invention.
【図２】本発明の鋼管突き合わせ溶接用裏当て金の鋼管
への取り付け状況を示す断面図であり、（ａ）は円形鋼
管の内周面に裏当て金を取り付けた状態を、（ｂ）は角
形鋼管の内周面の全周にわたって裏当て金を取り付けた
状態を、（ｃ）は角形鋼管の内周面の四隅部に裏当て金
を、直線部に通常の裏当て金を取り付けた状態を示す。FIGS. 2A and 2B are cross-sectional views showing how a backing metal for butt welding of a steel pipe according to the present invention is attached to a steel pipe. FIG. 2A shows a state where the backing metal is attached to the inner peripheral surface of a circular steel pipe. Shows a state in which backing metal is attached to the entire inner peripheral surface of the rectangular steel pipe, and (c) shows a state in which backing metal is attached to the four corners of the inner peripheral surface of the rectangular steel pipe, and a normal backing metal is attached to the straight part. Indicates the status.
【図3】長尺に成形した本発明の鋼管突き合わせ溶接用
裏当て金を、巻き取りドラムにコイル状に巻き付けた裏
当て金コイルを示す正面図である。FIG. 3 is a front view showing a backing coil formed by winding a long backing metal for butt welding of a steel pipe of the present invention around a winding drum in a coil shape.
【図４】ダイヤフラムを用いた柱梁接合部の斜視図であ
る。FIG. 4 is a perspective view of a beam-column joint using a diaphragm.
【図５】ダイヤフラムと柱および梁の溶接部を示す正面
図である。FIG. 5 is a front view showing a welded portion between a diaphragm, a column, and a beam.
１ 裏当て金 ２ スリット ３ 円形鋼管 ４ 角形鋼管 ５ 通常の裏当て金 ６ 巻き取りドラム ７ 裏当て金コイル DESCRIPTION OF SYMBOLS 1 Backing metal 2 Slit 3 Round steel pipe 4 Square steel pipe 5 Normal backing metal 6 Winding drum 7 Backing metal coil
Claims (4)
て密着するように、長手方向に沿って長手方向と直交す
るスリットを複数設けたことを特徴とする鋼管突き合わ
せ溶接用裏当て金。1. A backing metal for butt-welding of steel pipes, wherein a plurality of slits are provided along the longitudinal direction and orthogonal to the longitudinal direction so as to closely adhere along the inner peripheral surface of the steel pipe to be butt-welded.
裏当て金を、前記スリットを設けた面を外側として、突
き合わせ溶接する鋼管の内周面に沿って密着させること
を特徴とする、鋼管突き合わせ溶接用裏当て金の使用方
法。2. The steel pipe according to claim 1, wherein the backing metal for butt-welding of the steel pipe is brought into close contact with the inner peripheral surface of the butt-welded steel pipe, with the surface provided with the slit as the outside. How to use the backing metal for butt welding.
裏当て金を、前記スリットを設けた面を表側として、コ
イル状に巻き取ったことを特徴とする裏当て金用コイ
ル。3. A coil for a backing metal according to claim 1, wherein the backing metal for butt welding of a steel pipe according to claim 1 is wound in a coil shape with the surface provided with the slit as a front side.
ラムに巻き取り、必要とする長さだけ巻き戻して切り取
り、使用することを特徴とする鋼管突き合わせ溶接用裏
当て金コイルの使用方法。4. Use of a backing coil for steel pipe butt welding, wherein the backing coil according to claim 3 is wound around a drum, rewound and cut to a required length, and used. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000109115A JP2001293598A (en) | 2000-04-11 | 2000-04-11 | Backing for steel tube butt welding, backing coil, and method of use of backing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000109115A JP2001293598A (en) | 2000-04-11 | 2000-04-11 | Backing for steel tube butt welding, backing coil, and method of use of backing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001293598A true JP2001293598A (en) | 2001-10-23 |
Family
ID=18621854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000109115A Pending JP2001293598A (en) | 2000-04-11 | 2000-04-11 | Backing for steel tube butt welding, backing coil, and method of use of backing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001293598A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016083682A (en) * | 2014-10-27 | 2016-05-19 | 株式会社スノウチ | Weld backing steel plate |
-
2000
- 2000-04-11 JP JP2000109115A patent/JP2001293598A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016083682A (en) * | 2014-10-27 | 2016-05-19 | 株式会社スノウチ | Weld backing steel plate |
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