JPH11147126A - Metal tube provided with inside partition and its manufacture - Google Patents
Metal tube provided with inside partition and its manufactureInfo
- Publication number
- JPH11147126A JPH11147126A JP9260227A JP26022797A JPH11147126A JP H11147126 A JPH11147126 A JP H11147126A JP 9260227 A JP9260227 A JP 9260227A JP 26022797 A JP26022797 A JP 26022797A JP H11147126 A JPH11147126 A JP H11147126A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- partition
- pipe
- width direction
- tube
- 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.)
- Withdrawn
Links
Landscapes
- Laser Beam Processing (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、流体流路を形成する隔
壁が内部に設けられた金属管及びその製造方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal pipe having a partition wall forming a fluid flow path provided therein and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】金属管の内部を隔壁で二分するとき、異
なる流体を流すことができる金属管が得られる。このよ
うな内部隔壁をもつ金属管は、２本の金属管を用いて配
管する場合に比較して配管コストが大幅に低減される。
また、流路の断面積に対する外壁の表面積が小さいた
め、内部を流れる高温流体や低温流体の熱損失も少なく
なる。このような長所を活用し、内部隔壁をもつ金属管
を種々の分野に適用することが期待されている。管内部
の断面を二分する隔壁をもつ金属管は、内壁となる金属
板を金属管に挿入して溶接することにより製造される。
この場合、予め所定の長さに切断した金属管に同一長さ
の隔壁となる金属板を挿入し、外側から金属板を金属管
に溶接することにより組み立てられる。また、図１に示
すように、一枚の金属板１をＳ字状に曲げ加工し
（ａ）、幅方向端部２，３を所定箇所に溶接する（ｂ）
方法（実開昭６３−１９６４２５号公報）も知られてい
る。この方法では、所定長さの金属板をベンダー等で曲
げ加工し、或いは長尺の金属帯をロールフォーミング法
でＳ字状に成形した後、溶接している。2. Description of the Related Art When the inside of a metal tube is bisected by a partition wall, a metal tube through which different fluids can flow can be obtained. The piping cost of such a metal pipe having such internal partition walls is greatly reduced as compared with the case of piping using two metal pipes.
Further, since the surface area of the outer wall with respect to the cross-sectional area of the flow path is small, the heat loss of the high-temperature fluid and the low-temperature fluid flowing inside is also reduced. Utilizing such advantages, it is expected that metal pipes having internal partition walls will be applied to various fields. A metal pipe having a partition that bisects the cross section of the inside of the pipe is manufactured by inserting a metal plate serving as an inner wall into the metal pipe and welding.
In this case, a metal tube serving as a partition having the same length is inserted into a metal tube cut in advance to a predetermined length, and the metal plate is assembled from the outside by welding the metal plate to the metal tube. Also, as shown in FIG. 1, one metal plate 1 is bent into an S-shape (a), and the width direction ends 2 and 3 are welded to predetermined positions (b).
A method (Japanese Utility Model Application Laid-Open No. 63-196425) is also known. In this method, a metal plate having a predetermined length is bent by a bender or the like, or a long metal band is formed into an S-shape by a roll forming method and then welded.
【０００３】[0003]
【発明が解決しようとする課題】金属板を金属管に溶接
して内部隔壁をもつ金属管を製造する場合、設備負担は
軽減されるものの、部品の準備，組立て，溶接等の作業
がバッチになるため生産能率が悪く、結果として製品コ
ストを上げる原因となる。また、金属管の内部に金属板
を挿入する必要があるため、長尺の管に適用することが
困難である。他方、ロールフォーミング法等でＳ字状に
金属板を成形して溶接する方法は、生産性に優れる反
面、専用の成形設備を必要とし、更に製品サイズごとに
成形ロールを準備しておく必要がある。そのため、通常
の鋼管等に比較して生産量が限られた内部隔壁をもつ金
属管においては、設備負担が極めて重くなる。更には、
同じ素材から金属管及び隔壁が形成されるため、金属管
及び隔壁の厚みや材質を自由に選択できない。本発明
は、このような問題を解消すべく案出されたものであ
り、隔壁用金属帯をＴ字状又は縦長のＺ字状に溶接した
管用金属帯を造管することにより、従来の造管ラインを
大幅に変更することなく、設備負担を軽減し、内部隔壁
をもつ金属管を高生産性で製造することを目的とする。When a metal plate is welded to a metal tube to produce a metal tube having an internal partition, the burden on equipment is reduced, but operations such as preparation of parts, assembly, and welding are performed in batches. As a result, the production efficiency is poor, and as a result, the product cost is increased. Further, since it is necessary to insert a metal plate inside the metal tube, it is difficult to apply the method to a long tube. On the other hand, the method of forming and welding an S-shaped metal plate by a roll forming method or the like and welding is excellent in productivity, but requires special forming equipment and further requires forming rolls for each product size. is there. Therefore, in a metal pipe having an internal partition whose production is limited as compared with a normal steel pipe or the like, the facility burden becomes extremely heavy. Furthermore,
Since the metal tube and the partition are formed from the same material, the thickness and the material of the metal tube and the partition cannot be freely selected. The present invention has been devised in order to solve such a problem. By forming a metal band for a pipe in which a metal band for a partition wall is welded in a T-shape or a vertically long Z-shape, a conventional metal band is formed. An object of the present invention is to reduce the load on equipment without significantly changing a pipe line, and to manufacture a metal pipe having an internal partition wall with high productivity.
【０００４】[0004]
【課題を解決するための手段】本発明の内部隔壁をもつ
金属管は、その目的を達成するため、管軸方向に沿った
隔壁で管内部が二分された金属管であり、金属管に成形
される金属帯の幅方向中央部に隔壁の一端が溶接され、
金属帯の幅方向両端部と隔壁の他端が溶接一体化されて
いることを特徴とする。この内部隔壁をもつ金属管は、
製品金属管の直径にほぼ等しい幅をもつ隔壁用金属帯の
一端を管用金属帯の幅方向中央部に溶接した後、管用金
属帯を円筒状にロール成形し、次いで管用金属帯の幅方
向両端部を隔壁用金属帯の幅方向他端と溶接一体化する
ことにより製造される。According to the present invention, there is provided a metal pipe having an internal partition wall, which is a metal pipe in which the inside of the pipe is bisected by a partition wall extending in the axial direction of the pipe. One end of the partition is welded to the center in the width direction of the metal strip to be
It is characterized in that both ends in the width direction of the metal strip and the other end of the partition are welded and integrated. The metal tube with this internal partition,
After welding one end of a metal band for a partition having a width approximately equal to the diameter of the product metal tube to the center in the width direction of the metal band for the tube, the metal band for the tube is roll-formed into a cylindrical shape, and then both ends in the width direction of the metal band for the tube. It is manufactured by welding and integrating the portion with the other end in the width direction of the metal band for the partition wall.
【０００５】[0005]
【実施の形態】本発明に従った内部隔壁をもつ金属管
は、たとえば図２に設備構成を示すラインで製造され
る。金属管となる金属帯１０は、ペイオフリール１１か
ら送り出される。この管用金属帯１０に対し、隔壁用金
属帯２０を幅方向一端が金属帯１０の幅方向中央部に位
置するように送り込む。金属帯１０，２０としては、フ
ェライト系，オーステナイト系を初めとする各種ステン
レス鋼や普通鋼等が使用される。管用金属帯１０はガイ
ドローラ１２，１２で水平に保持され、隔壁用金属帯２
０はガイドローラ２２，２２で垂直に保持される。この
状態で、隔壁用金属帯２０の幅方向一端２０ａを金属帯
１０の幅方向中央部に溶接し、Ｔ字形部材又は逆Ｔ字形
部材を組み立てる（図３ａ）。管用金属帯１０と隔壁用
金属帯２０との溶接には、ＴＩＧ溶接，ＭＩＧ溶接によ
る隅肉溶接が採用される。また、隔壁接合面の裏側から
隔壁の下端に達するようにビードを貫通させるＴＩＧ溶
接，プラズマ溶接，レーザ溶接や、高周波誘導溶接，高
周波抵抗溶接等も採用可能である。DESCRIPTION OF THE PREFERRED EMBODIMENTS A metal tube having an internal partition according to the present invention is manufactured, for example, on a line whose equipment configuration is shown in FIG. A metal strip 10 serving as a metal tube is sent out from a payoff reel 11. The partition metal strip 20 is fed into the pipe metal strip 10 such that one end in the width direction is located at the center of the metal strip 10 in the width direction. As the metal bands 10 and 20, various stainless steels such as a ferritic type and an austenitic type, and ordinary steels are used. The pipe metal strip 10 is held horizontally by guide rollers 12, 12, and the partition metal strip 2
0 is held vertically by guide rollers 22,22. In this state, one end 20a in the width direction of the partition metal band 20 is welded to the center in the width direction of the metal band 10 to assemble a T-shaped member or an inverted T-shaped member (FIG. 3A). Fillet welding by TIG welding or MIG welding is employed for welding the pipe metal band 10 and the partition metal band 20. Further, TIG welding, plasma welding, laser welding, high-frequency induction welding, high-frequency resistance welding, or the like in which a bead is penetrated from the back side of the partition wall joining surface to reach the lower end of the partition wall can also be adopted.
【０００６】図２では、ロールフォーミング工程の入側
で連続的に隔壁用金属帯２０を管用金属帯１０に溶接し
ている。このように管用金属帯１０と隔壁用金属帯２０
との溶接に引き続いてロールフォーミングするとき、生
産性が高いラインが構築される。しかし、本発明はこれ
に拘束されるものではなく、たとえばロールフォーミン
グとは別工程で隔壁用金属帯２０を管用金属帯１０に溶
接し、数ｍ〜数十ｍのＴ字形部材又は逆Ｔ字形部材を製
造しておくことも可能である。別工程でＴ字形部材又は
逆Ｔ字形部材を用意する場合、ある工程でのトラブルに
起因したライン全体の停止が防止される。また、図４に
示すように隔壁用金属帯２０を成形ロール２３で縦長の
Ｚ字状に成形して管用金属帯１０に溶接した後、管用金
属帯１０を外管成形用のロール１３，１４で造管し、管
用金属帯１０の幅方向両端部を溶接することもできる。
造管ラインとしても、曲げロールで幅方向に曲がる残留
応力を管用金属帯１０に与え、残留応力によって管用金
属帯１０を筒状に湾曲させるロールレスフォーミングを
採用することも可能である。In FIG. 2, the metal band 20 for the partition wall is continuously welded to the metal band 10 for the pipe at the entry side of the roll forming step. Thus, the metal strip 10 for a pipe and the metal strip 20 for a partition
When the roll forming is performed subsequent to the welding with the steel, a line with high productivity is constructed. However, the present invention is not limited to this. For example, the partition metal band 20 is welded to the pipe metal band 10 in a process different from roll forming, and a T-shaped member or an inverted T-shaped It is also possible to manufacture the member in advance. When the T-shaped member or the inverted T-shaped member is prepared in another step, the stop of the entire line due to a trouble in a certain step is prevented. Further, as shown in FIG. 4, after forming the partition metal band 20 into a vertically long Z-shape with the forming rolls 23 and welding it to the tube metal band 10, the tube metal band 10 is formed into outer tube forming rolls 13 and 14. It is also possible to weld both ends in the width direction of the metal strip 10 for a pipe.
For the pipe forming line, it is also possible to adopt a rollless forming in which a residual stress that bends in the width direction by a bending roll is applied to the metal band for pipe 10 and the metal band for pipe 10 is bent into a tubular shape by the residual stress.
【０００７】隔壁用金属帯２０が溶接された管用金属帯
１０は、次いでロールフォーミング工程に送られ、成形
ロール群を通過する間に上下の成形ロール１３，１４に
より円筒形状に成形される（図３ｂ）。ロールフォーミ
ングに際しては、通常の金属帯を成形する場合と異なり
上下方向の曲がりがほとんど許容されないため、成形中
の管用金属帯１０の幅方向中央部の高さが水平となるよ
うに水平ガイドラインを採用することが好ましい。上ロ
ール１４としては、隔壁用金属帯２０を回避する凹部１
５やフィンパス部１６を設けたロールが使用される。円
筒状に成形された管用金属帯１０は、溶接スタンド１７
で隔壁用金属帯２０の幅方向他端２０ｂと溶接により一
体化される（図３ｃ）。管用金属帯１０と隔壁用金属帯
２０との溶接一体化には、たとえば幅方向他端２０ｂに
管用金属帯１０の幅方向両端部１０ａ，１０ｂを被せて
溶接する方法（図５），管用金属帯１０の幅方向両端部
１０ａ，１０ｂの間に隔壁用金属帯２０を挟み込んだ状
態で幅方向両端部１０ａ，１０ｂを幅方向他端２０ｂと
共に溶接する方法（図６）等が採用される。また、Ｚ字
状に成形した隔壁用金属帯２０を管用金属帯１０に溶接
する場合には、図７に示すように管用金属帯１０の幅方
向両端部１０ａ，１０ｂの突合せ部の下方に隔壁用金属
帯２０の屈曲端部２０ｃが位置するため、隔壁用金属帯
２０は溶接部に対し若干斜めに配置される。溶接方法と
しては、ＴＩＧ，ＭＩＧ，レーザ溶接，高周波誘導溶
接，高周波抵抗溶接等を使用できる。このようにして隔
壁用金属帯２０で内部が二分された溶接管１８は、サイ
ジングロールスタンドに送られ、ビード形状及び管断面
形状が調整，矯正される。次いで、所定長さに切断さ
れ、内部隔壁をもつ溶接製品管となる。The pipe metal strip 10 to which the partition metal strip 20 has been welded is then sent to a roll forming step, and is formed into a cylindrical shape by upper and lower forming rolls 13 and 14 while passing through a forming roll group (FIG. 1). 3b). During roll forming, unlike the case of forming a normal metal strip, since horizontal bending is hardly allowed, a horizontal guideline is adopted so that the height of the center of the pipe metal strip 10 in the width direction during forming is horizontal. Is preferred. As the upper roll 14, the concave portion 1 that avoids the partition metal band 20 is used.
5 and a roll provided with a fin pass portion 16 are used. The cylindrical metal band 10 for a pipe is welded to a welding stand 17.
Then, it is integrated with the other end 20b in the width direction of the partition metal band 20 by welding (FIG. 3C). In order to integrate the metal strip for pipe 10 and the metal strip for partition 20 by welding, for example, a method of covering the other end 20b in the width direction with both ends 10a and 10b in the width direction of the pipe metal strip 10 and welding (FIG. 5), A method of welding both ends 10a and 10b in the width direction together with the other ends 20b in the width direction while sandwiching the metal band 20 for the partition wall between both ends 10a and 10b in the width direction of the band 10 (FIG. 6) is adopted. When the metal band 20 for a partition wall formed in a Z shape is welded to the metal band 10 for a tube, as shown in FIG. Since the bent end portion 20c of the metal band 20 for a partition is located, the metal band 20 for a partition wall is arranged slightly obliquely to the welded portion. As a welding method, TIG, MIG, laser welding, high frequency induction welding, high frequency resistance welding, or the like can be used. The welding pipe 18 whose inside is divided into two by the partition metal band 20 in this manner is sent to a sizing roll stand, where the bead shape and the tube cross-sectional shape are adjusted and corrected. Next, it is cut to a predetermined length to form a welded product pipe having an internal partition.
【０００８】[0008]
【実施例】実施例１：板幅１８９ｍｍ，板厚０．８ｍｍ
のフェライト系ステンレス鋼を管用金属帯１０として使
用し、板幅５９ｍｍ，板厚２ｍｍのフェライト系ステン
レス鋼を隔壁用金属帯２０として使用した。管用金属帯
１０は、水平ガイドロール１２で拘束した状態で送り出
した。隔壁用金属帯２０は、管用金属帯１０に対して垂
直となるように垂直ガイドロール２２で拘束した状態で
送り出した。管用金属帯１０に隔壁用金属帯２０が接合
される面の反対側から、５ｍ／分の速度及び６ＫＷの出
力で炭酸ガスレーザを照射し、管用金属帯１０から隔壁
用金属帯２０の幅方向一端部２０ａに貫通する溶接ビー
ドを形成した。これによって、隔壁用金属帯２０が管用
金属帯１０に溶接一体化された。隔壁用金属帯２０が一
体化された管用金属帯１０をロールフォーミング装置に
送り、隔壁用金属帯２０を包み込む方向に管用金属帯１
０を円筒状に成形した。ロールフォーミング装置のエッ
ジベンドロールから最終フィンパスロールにかけては、
ライン進行方向から見て幅５ｍｍ，高さ６５ｍｍの隔壁
回避用凹部１５を設けた上ロール１４を使用した。EXAMPLES Example 1: Width 189 mm, thickness 0.8 mm
Was used as the metal strip 10 for pipes, and a ferritic stainless steel with a board width of 59 mm and a thickness of 2 mm was used as the metal strip 20 for partition walls. The metal strip for pipe 10 was sent out while being restrained by a horizontal guide roll 12. The partition metal band 20 was fed out while being restrained by a vertical guide roll 22 so as to be perpendicular to the pipe metal band 10. A carbon dioxide laser is irradiated at a speed of 5 m / min and an output of 6 KW from the side opposite to the surface where the partition metal band 20 is joined to the pipe metal band 10, and one end in the width direction of the partition metal band 20 from the pipe metal band 10. A weld bead penetrating the portion 20a was formed. As a result, the partition metal band 20 was welded and integrated with the pipe metal band 10. The pipe metal strip 10 in which the partition metal strip 20 is integrated is sent to a roll forming device, and the pipe metal strip 1 is wrapped around the pipe metal strip 20.
0 was formed into a cylindrical shape. From the edge bend roll of the roll forming device to the final fin pass roll,
The upper roll 14 provided with the partition wall avoiding recess 15 having a width of 5 mm and a height of 65 mm as viewed from the line traveling direction was used.
【０００９】隔壁用金属帯２０の幅方向他端２０ｂの上
で管用金属帯１０の幅方向両端部１０ａ，１０ｂを突き
合わせ（図４）、プラズマ溶接し、幅方向両端部１０
ａ，１０ｂの突合せ部から幅方向他端２０ｂに貫通する
ビードを形成した。プラズマ溶接後、直ちにプラズマ溶
接ビードの上側から更にＴＩＧ溶接した。次いで、溶接
管１８をビード研磨し、外径寸法をサイジングロールで
調整した。このようにして、内部に厚み２ｍｍの隔壁を
設けた直径６０．５ｍｍ，肉厚０．８ｍｍの溶接管１８
が連続的に製造された。得られた溶接管１８の溶接部を
検査したところ、隔壁用金属帯２０の幅方向一端２０
ａ，他端２０ｂ共に管用金属帯１０に気密接合されてお
り、隔壁用金属帯２０で二分された溶接管１８の内部が
それぞれ流体流路として使用可能なことが判った。Both ends 10a and 10b in the width direction of the metal band 10 for a pipe are abutted on the other end 20b in the width direction of the metal band 20 for the partition wall (FIG. 4), and are plasma-welded.
A bead penetrating from the abutting portion of a and 10b to the other end 20b in the width direction was formed. Immediately after the plasma welding, TIG welding was further performed from above the plasma welding bead. Next, the welded pipe 18 was bead-polished, and the outer diameter was adjusted with a sizing roll. In this way, a welding pipe 18 having a diameter of 60.5 mm and a wall thickness of 0.8 mm provided with a partition wall having a thickness of 2 mm inside.
Was produced continuously. When the welded portion of the obtained welded pipe 18 was inspected, one end 20 in the width direction of the metal strip 20 for a partition wall was inspected.
Both a and the other end 20b are air-tightly joined to the pipe metal band 10, and it has been found that the inside of the welded pipe 18 divided by the partition metal band 20 can be used as a fluid flow path.
【００１０】実施例２：板幅１８２．５ｍｍ，板厚２ｍ
ｍのオーステナイト系ステンレス鋼を管用金属帯１０と
して使用し、板幅５９ｍｍ，板厚２ｍｍのオーステナイ
ト系ステンレス鋼を隔壁用金属帯２０として使用した。
管用金属帯１０及び隔壁用金属帯２０を実施例１と同様
に送り出しながら、隔壁用金属帯２０の幅方向一端２０
ａの両側から幅方向一端２０ａを管用金属帯１０にＭＩ
Ｇ隅肉溶接し、逆Ｔ字形に組み立てた。溶接後、先端か
らの長さが６ｍとなった時点で管用金属帯１０及び隔壁
用金属帯２０を逐次切断し、長さ６ｍの逆Ｔ字形部材を
得た。この逆Ｔ字形部材を別ラインのロールフォーミン
グ装置に送り、隔壁用金属帯２０を包み込む方向に管用
金属帯１０を円筒状に成形した。ロールフォーミング装
置のエッジベンドロールから最終フィンパスロールにか
けては、実施例１と同様な隔壁回避用凹部１５を設けた
上ロール１４を使用した。Example 2: Sheet width 182.5 mm, sheet thickness 2 m
m austenitic stainless steel was used as the metal strip 10 for pipes, and austenitic stainless steel having a plate width of 59 mm and a thickness of 2 mm was used as the metal strip 20 for partition walls.
While feeding the metal strip for pipe 10 and the metal strip for partition 20 in the same manner as in Example 1, one end 20 in the width direction of the metal strip for partition 20 is sent out.
a to the metal strip 10 from the both sides in the width direction.
The G fillet was welded and assembled into an inverted T shape. After welding, when the length from the tip became 6 m, the pipe metal band 10 and the partition metal band 20 were sequentially cut to obtain an inverted T-shaped member having a length of 6 m. The inverted T-shaped member was sent to a roll forming apparatus on another line, and the pipe metal band 10 was formed into a cylindrical shape so as to surround the partition metal band 20. From the edge bend roll to the final fin pass roll of the roll forming apparatus, the upper roll 14 provided with the partition wall avoiding recess 15 similar to that in the first embodiment was used.
【００１１】隔壁用金属帯２０の幅方向他端２０ｂの両
側に管用金属帯１０の幅方向両端部１０ａ，１０ｂを突
き合わせ（図６）、幅方向両端部１０ａ，１０ｂから幅
方向他端２０ｂが０．５ｍｍだけ突出するようにスクイ
ズロールで保持した。この状態で、幅方向他端２０ｂと
共に幅方向両端部１０ａ，１０ｂが溶融するようにＴＩ
Ｇ溶接した。次いで、溶接管１８をビード研磨し、外径
寸法をサイジングロールで調整した。このようにして、
内部に厚み２ｍｍの隔壁を設けた直径６０．５ｍｍ，肉
厚２ｍｍの溶接管１８が連続的に製造された。得られた
溶接管１８の溶接部を検査したところ、隔壁用金属帯２
０の幅方向一端２０ａ，他端２０ｂ共に管用金属帯１０
に気密接合されており、隔壁用金属帯２０で二分された
溶接管１８の内部がそれぞれ流体流路として使用可能な
ことが判った。Both ends 10a and 10b in the width direction of the metal strip 10 are abutted on both sides of the other end 20b in the width direction of the metal strip 20 for partition (FIG. 6). It was held by a squeeze roll so as to protrude by 0.5 mm. In this state, the TI is set so that both ends 10a and 10b in the width direction are melted together with the other end 20b in the width direction.
G welded. Next, the welded pipe 18 was bead-polished, and the outer diameter was adjusted with a sizing roll. In this way,
A weld pipe 18 having a diameter of 60.5 mm and a wall thickness of 2 mm provided with a partition wall having a thickness of 2 mm inside was continuously manufactured. When the welded portion of the obtained welded pipe 18 was inspected, the metal band 2
0 both ends 20a and 20b in the width direction of the metal strip 10 for pipes.
It was found that the inside of the welded pipe 18 divided by the partition metal band 20 can be used as a fluid flow path.
【００１２】実施例３：板幅１８２．５ｍｍ，板厚２ｍ
ｍのオーステナイト系ステンレス鋼を管用金属帯１０と
して使用し、板幅７０ｍｍ，板厚２ｍｍのオーステナイ
ト系ステンレス鋼を隔壁用金属帯２０として使用した。
図４に示した成形ロール２３で隔壁用金属帯２０の幅方
向両端部を５ｍｍだけ折り曲げ、屈曲端部２０ｃ，２０
ｄを上下にもつ縦長のＺ字状に成形した。速度５ｍ／
分，出力７ｋＷで下側の屈曲端部２０ｄを管用金属帯１
０の中央部にレーザ溶接し、成形ロール１３，１４で管
用金属帯１０を成形した。上側の屈曲端部２０ｃの上に
管用金属帯１０の幅方向両端部１０ａ，１０ｂの突合せ
部を位置させ、同じ条件下で幅方向両端部１０ａ，１０
ｂを屈曲端部２０ｃとレーザ溶接により一体化した。次
いで、溶接管１８をビード研磨し、外径寸法をサイジン
グロールで調整した。このようにして、内部に厚み２ｍ
ｍの隔壁を設けた直径６０．５ｍｍ，肉厚２ｍｍの溶接
管１８が連続的に製造された。得られた溶接管１８の溶
接部を検査したところ、隔壁用金属帯２０の屈曲端部２
０ｃ，２０ｄ共に管用金属帯１０に気密接合されてお
り、隔壁用金属帯２０で二分された溶接管１８の内部が
それぞれ流体流路として使用可能なことが判った。Example 3: Sheet width 182.5 mm, sheet thickness 2 m
m of austenitic stainless steel was used as the metal strip 10 for pipes, and austenitic stainless steel having a sheet width of 70 mm and a thickness of 2 mm was used as the metal strip 20 for partition walls.
Both ends in the width direction of the partition metal band 20 are bent by 5 mm by the forming roll 23 shown in FIG.
It was formed into a vertically long Z-shape having d above and below. Speed 5m /
And the lower bent end 20d at a power of 7 kW with the metal band 1 for pipe.
No. 0 was subjected to laser welding, and the metal strips for pipes 10 were formed by the forming rolls 13 and 14. Abutting portions of both ends 10a, 10b in the width direction of the metal strip 10 for a tube are positioned on the upper bent end portion 20c, and both ends 10a, 10b in the width direction under the same conditions.
b was integrated with the bent end portion 20c by laser welding. Next, the welded pipe 18 was bead-polished, and the outer diameter was adjusted with a sizing roll. In this way, the thickness 2m inside
A weld pipe 18 having a diameter of 60.5 mm and a wall thickness of 2 mm provided with m partition walls was continuously manufactured. When the welded portion of the obtained welded pipe 18 was inspected, the bent end portion 2 of the metal band 20 for a partition wall was inspected.
Both 0c and 20d were air-tightly joined to the pipe metal band 10, and it was found that the inside of the welded pipe 18 divided by the partition metal band 20 could be used as a fluid flow path.
【００１３】[0013]
【発明の効果】以上に説明したように、本発明において
は、隔壁となる金属帯を管用金属帯の板幅方向中央部に
溶接してＴ字形又は逆Ｔ字形部材に組み立てた後、管用
金属帯を筒状にロール成形し、管用金属帯の幅方向両端
部を隔壁用金属帯の他端と溶融溶接している。この方法
によるとき、隔壁用金属帯を管用金属帯に溶接する工程
を付加するだけで、従来の造管ラインを大幅に変更する
必要なく、隔壁で内部が二分された溶接管が製造され
る。得られた溶接管は、隔壁用金属帯の両端部が管内壁
に強固に気密一体化されているので、異種の流体を給排
できる配管として使用される。しかも、管用金属帯及び
隔壁用金属帯の鋼種，サイズ等を自由に選択てきるた
め、用途に応じた溶接管が得られる。As described above, according to the present invention, after the metal strip serving as the partition wall is welded to the center of the metal strip for pipe in the plate width direction to assemble it into a T-shaped or inverted T-shaped member, the metal strip for pipe is formed. The band is roll-formed into a tubular shape, and both ends in the width direction of the tube metal band are fusion-welded to the other end of the partition metal band. According to this method, a welded pipe whose inside is divided into two parts by a partition can be manufactured only by adding a step of welding a metal strip for a partition to a metal strip for a pipe, without having to largely change a conventional pipe-making line. The obtained welded pipe is used as a pipe capable of supplying and discharging different kinds of fluids because both ends of the metal strip for a partition are tightly and airtightly integrated with the inner wall of the pipe. In addition, since the steel type, size, and the like of the metal strip for the pipe and the metal strip for the partition can be freely selected, a welded pipe suitable for the intended use can be obtained.
【図１】 従来のＳ字形に成形した金属帯から内部隔壁
をもつ溶接管を製造する方法の説明図FIG. 1 is an explanatory view of a method of manufacturing a welded pipe having an internal partition from a conventional metal band formed into an S-shape.
【図２】 本発明に従った造管ラインFIG. 2 shows a pipe production line according to the present invention.
【図３】 内部隔壁をもつ溶接管を製造する工程を順を
追って説明する図FIG. 3 is a view for sequentially explaining a process of manufacturing a welded pipe having an internal partition.
【図４】 縦長のＺ字状に成形した隔壁用金属帯を使用
する造管ラインFIG. 4 is a pipe production line using a metal band for a partition wall formed in a vertically long Z-shape.
【図５】 実施例１で製造した内部隔壁をもつ溶接管FIG. 5 is a welded pipe having an internal partition wall manufactured in Example 1.
【図６】 実施例２で製造した内部隔壁をもつ溶接管FIG. 6 is a welded pipe having an internal partition wall manufactured in Example 2.
【図７】 実施例３で製造した内部隔壁をもつ溶接管FIG. 7 is a welded pipe having an internal partition wall manufactured in Example 3.
１０：管用金属帯 １０ａ，１０ｂ：管用金属帯の幅
方向両端部 １１：ペイオフリール １２：ガイドローラ １
３：下ロール １４：上ロール １５：上ロールに
付けた隔壁回避用凹部 １６：フィンパス部 １７：溶接スタンド １８：溶接管 ２０：隔壁用金属帯 ２０ａ，２０ｂ：隔壁用金属帯
の端部 ２０ｃ，２０ｄ：縦長のＺ字状に成形された
隔壁用金属帯の屈曲端部 ２２：ガイドローラ10: Metal strip for pipe 10a, 10b: Both ends in the width direction of metal strip for pipe 11: Payoff reel 12: Guide roller 1
3: Lower roll 14: Upper roll 15: Bulkhead avoiding concave portion attached to the upper roll 16: Fin pass section 17: Welding stand 18: Welding pipe 20: Metal strip for partition 20a, 20b: End of metal strip for partition 20c, 20d: bent end portion of partition metal band formed in a vertically long Z-shape 22: guide roller
Claims (2)
れた金属管であり、金属管に成形される金属帯の幅方向
中央部に隔壁の一端が溶接され、金属帯の幅方向両端部
と隔壁の他端が溶接一体化されていることを特徴とする
内部隔壁をもつ金属管。1. A metal pipe in which the inside of a pipe is divided into two parts by a partition wall extending in the pipe axis direction, one end of the partition wall is welded to a width direction center portion of a metal band formed in the metal pipe, and the metal band width direction is provided. A metal tube having an internal partition, wherein both ends and the other end of the partition are welded and integrated.
隔壁用金属帯の一端を管用金属帯の幅方向中央部に溶接
した後、管用金属帯を円筒状にロール成形し、次いで管
用金属帯の幅方向両端部を隔壁用金属帯の幅方向他端と
溶接一体化することを特徴とする内部隔壁をもつ金属管
の製造方法。2. After welding one end of a partition metal strip having a width substantially equal to the diameter of a product metal pipe to the center in the width direction of the pipe metal strip, the pipe metal strip is roll-formed into a cylindrical shape, and then the pipe metal strip is formed. A method for producing a metal tube having an internal partition, wherein both ends in the width direction of the band are welded and integrated with the other end in the width direction of the metal band for a partition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9260227A JPH11147126A (en) | 1997-09-11 | 1997-09-25 | Metal tube provided with inside partition and its manufacture |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9-246298 | 1997-09-11 | ||
| JP24629897 | 1997-09-11 | ||
| JP9260227A JPH11147126A (en) | 1997-09-11 | 1997-09-25 | Metal tube provided with inside partition and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11147126A true JPH11147126A (en) | 1999-06-02 |
Family
ID=26537656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9260227A Withdrawn JPH11147126A (en) | 1997-09-11 | 1997-09-25 | Metal tube provided with inside partition and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11147126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024106326A1 (en) * | 2022-11-15 | 2024-05-23 | 株式会社ジーテクト | Method for manufacturing frame component molded by roll form molding, and frame component |
-
1997
- 1997-09-25 JP JP9260227A patent/JPH11147126A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024106326A1 (en) * | 2022-11-15 | 2024-05-23 | 株式会社ジーテクト | Method for manufacturing frame component molded by roll form molding, and frame component |
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Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20041207 |