JPH0211275A - Device for removing interior welding slag of spiral steel pipe - Google Patents
Device for removing interior welding slag of spiral steel pipeInfo
- Publication number
- JPH0211275A JPH0211275A JP16034088A JP16034088A JPH0211275A JP H0211275 A JPH0211275 A JP H0211275A JP 16034088 A JP16034088 A JP 16034088A JP 16034088 A JP16034088 A JP 16034088A JP H0211275 A JPH0211275 A JP H0211275A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- compressed air
- steel pipe
- hammer
- spiral steel
- 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
- 239000002893 slag Substances 0.000 title claims abstract description 76
- 238000003466 welding Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 33
- 239000010959 steel Substances 0.000 title claims abstract description 33
- 239000011324 bead Substances 0.000 claims abstract description 13
- 238000007664 blowing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
この発明は、スパイラル鋼管内面の溶接スラグを除去す
る装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an apparatus for removing welding slag from the inner surface of a spiral steel pipe.
［従来の技術］
スパイラル鋼管２１は、造管機（図示せず）で第４図の
ように鋼板２２をスパイラル状に巻き付け、接合部２３
を内外面溶接して製造している。[Prior Art] A spiral steel pipe 21 is produced by winding a steel plate 22 in a spiral shape as shown in FIG.
Manufactured by welding the inside and outside surfaces.
この溶接は、通常サブマージアーク溶接法で内外面を溶
接している。したがって、溶接ビード上には溶融スラグ
が付着しており、溶接後にこれを除去する作業を行なっ
ている。一般にスラグの除去作業は、オフラインで行な
っているが、オンラインで造管中に故障やその他の理由
で造管作業を一次中断する場合には、このスラグ除去作
業をオンラインで短時間で行なう必要性がでてくる。す
なわち、造管作業が中断されると、溶接作業も中断され
ることになるが、造管作業が再開された時、溶接を作業
中断時の位置から開始すると、作業中断以前の溶接ビー
ドと作業再開後の溶接ビートとの間に未溶接部や溶は込
み不良が発生する。このような欠陥を防止するため、作
業中断以前の溶接ビードの終端にラップして溶接をする
必要があるが、このためには溶接ビードに付着している
溶融スラグを除去しなければならない。This welding is usually performed by welding the inner and outer surfaces using a submerged arc welding method. Therefore, molten slag adheres to the weld bead, and this must be removed after welding. Generally, slag removal work is done offline, but if the pipe making work is temporarily interrupted due to a breakdown or other reasons during online pipe making, it is necessary to perform this slag removal work online in a short time. comes out. In other words, if the pipe making work is interrupted, the welding work will also be interrupted, but when the pipe making work is restarted and welding is started from the position at which the work was interrupted, the weld bead and the welding work that were before the work was interrupted will be Unwelded areas and poor penetration occur between the welding beat and the welding beat after restarting. In order to prevent such defects, it is necessary to wrap and weld the end of the weld bead before work is interrupted, but for this purpose it is necessary to remove the molten slag adhering to the weld bead.
［発明が解決しようとする課題］
上述のようなスパイラル鋼管の造管作業再開に伴う溶接
部の溶融スラグの除去作業は、従来作業者がハンマー等
を用いて手作業で行なっていたが、特にスパイラル鋼管
内面のスラグの除去は狭い鋼管の中での作業となるので
、長時間を要し、造管作業の作業能率を著しく低下させ
ていた。また直径が６００ ｍｍ以下の鋼管では、鋼管
の中に人が入って作業することができず、前記のような
ラップ溶接ができないため、歩留の低下にもつながって
いた。[Problems to be Solved by the Invention] Conventionally, the removal of molten slag from welds upon restarting spiral steel pipe manufacturing work as described above was carried out manually by workers using hammers, etc. Removal of slag from the inner surface of a spiral steel pipe requires a long time because the work is carried out inside a narrow steel pipe, which significantly reduces the efficiency of pipe-making work. Furthermore, for steel pipes with a diameter of 600 mm or less, it is impossible for people to work inside the steel pipes, and the above-mentioned lap welding is not possible, leading to a decrease in yield.
この発明は、以上のような従来技術の問題点を解消し、
溶融スラグの除去を短時間で行なうとともに、小径のス
パイラル鋼管内面のスラグの除去ができるスパイラル鋼
管内面溶接スラグ除去装置を提供することを目的として
いる。This invention solves the problems of the prior art as described above,
It is an object of the present invention to provide a welding slag removal device for the inner surface of a spiral steel pipe that can remove molten slag in a short time and also remove slag from the inner surface of a small diameter spiral steel pipe.
［課題を解決するための手段］
この発明に係わるスパイラル鋼管内面溶接スラグ除去装
置は、溶接スラグに圧縮空気を吹きつけて溶接スラグを
急冷する装置と、急冷された溶接スラグを連続上下動す
るハンマーで破砕するスラグ破砕装置と、破砕されたス
ラグを圧縮空気により吹き飛ばすビードクリーナーとか
らなるスパイラル鋼管内面溶接スラグ除去装置である。[Means for Solving the Problems] A device for removing welding slag on the inner surface of a spiral steel pipe according to the present invention includes a device that rapidly cools the welding slag by blowing compressed air onto the welding slag, and a hammer that continuously moves the rapidly cooled welding slag up and down. This is a slag removal device for internal welding of spiral steel pipes, which consists of a slag crusher that crushes the slag with a slag, and a bead cleaner that blows out the crushed slag with compressed air.
［作用］
上記構成により、溶融スラグを冷却するとともに、スラ
グを能率良く破砕し、溶接ビード上のスラグを残らず除
去することができる。またコンパクトに構成することに
より、小径鋼管の内面の溶融スラグも除去することがで
きる。[Function] With the above configuration, it is possible to cool the molten slag, efficiently crush the slag, and remove all the slag on the weld bead. Further, by having a compact structure, molten slag on the inner surface of the small diameter steel pipe can also be removed.
［実施例］ 本発明の１実施例を、第１図〜第３図により説明する。[Example] One embodiment of the present invention will be described with reference to FIGS. 1 to 3.
第１図は本発明の一実施例のスパイラル鋼管内面溶接ス
ラグ除去装置１である。スパイラル鋼管内面溶接スラグ
除去装置１は、高温の溶融スラグを急速に冷却するため
に、圧縮空気ノズル２と、この圧縮ノズル２と工場内圧
縮空気配管（図示せず）とを接続するフレキシブルホー
ス３を装備している。また冷却されたスラグを破砕する
ために、スラグ破砕装置４を装備している。このスラグ
破砕装置４は、取付支持板５に取付けられたエアーシリ
ンダー駆動用電磁弁６と、エアーシリンダー７と、この
エアーシリンダー７および２本のハンマー上下動ガイド
柱８に装着されたスプリング９により上下動するハンマ
ー１０およびハンマーガイド板１１とから構成されてい
る。さらにこのスパイラル鋼管内面溶接スラグ除去装置
１には、破砕したスラグをビード上から吹き飛ばすため
に、圧縮空気ノズル１２と、この圧縮ノズルと工場内圧
縮空気配管（図示せず）とを接続するフレキシブルホー
ス１３を装備している。FIG. 1 shows an apparatus 1 for removing slag from internal welding of a spiral steel pipe according to an embodiment of the present invention. The spiral steel pipe internal welding slag removal device 1 includes a compressed air nozzle 2 and a flexible hose 3 that connects the compressed air nozzle 2 to an in-factory compressed air piping (not shown) in order to rapidly cool high-temperature molten slag. Equipped with Furthermore, a slag crushing device 4 is provided to crush the cooled slag. This slag crushing device 4 includes an air cylinder driving solenoid valve 6 attached to a mounting support plate 5, an air cylinder 7, and a spring 9 attached to the air cylinder 7 and two hammer vertical movement guide columns 8. It is composed of a hammer 10 that moves up and down and a hammer guide plate 11. Furthermore, this spiral steel pipe inner welding slag removal device 1 includes a compressed air nozzle 12 and a flexible hose that connects the compressed air nozzle to an in-factory compressed air piping (not shown) in order to blow away the crushed slag from above the bead. It is equipped with 13.
このような構成になっているので、スパイラル鋼管内面
の溶接スラグを除去する際には、このスラグ除去装置１
を第２図のように内面溶接機電極１４の支持部材１５に
取付け、第３図のように溶接中断前の溶接終端部のスラ
グ１６をハンマリングして剥離させることができる。こ
のスラグの除去作業を手順を追って説明すると、溶接ビ
ード上の高温溶融スラグに圧縮空気ノズル２から圧縮空
気を吹き付けて、スラグを冷却する１次にスラグ破砕装
置４により、スラグを破砕する。スラグを破砕するため
のハンマリング機構はつぎのようになっている。エアー
シリンダー駆動用電磁弁６が励磁されると、エアーシリ
ンダー７に圧縮空気が送られ、ハンマー１０が下降しス
ラグを叩いて破砕する。エアーシリンダー駆動用電磁弁
６が無励磁の状態になると、圧縮空気が排気され、ハン
マー１０と一体となって作動するハンマーガイド板１１
を上方へ引き上げるように装備しであるスプリング９の
回復力によりハンマーは引き上げられる。このような操
作を繰り返し交互に行なうことによりハンマリングでき
る。このハンマリングのハンマリングサイクルは、最高
２回／秒まで自由に調整ができるようになっている。最
後にハンマリングにより破砕されたスラグに、圧縮空気
ノズル１２から圧縮空気を吹き付はビード上にスラグが
残留しないように吹き飛ばす。With this configuration, when removing welding slag from the inner surface of a spiral steel pipe, this slag removal device 1
is attached to the support member 15 of the internal welding machine electrode 14 as shown in FIG. 2, and the slag 16 at the welding end before welding is interrupted can be removed by hammering as shown in FIG. This slag removal work will be explained step by step. Compressed air is blown from a compressed air nozzle 2 onto the high temperature molten slag on the weld bead to cool the slag.The slag is then crushed by a slag crushing device 4. The hammering mechanism for crushing slag is as follows. When the air cylinder driving electromagnetic valve 6 is excited, compressed air is sent to the air cylinder 7, and the hammer 10 descends to strike and crush the slag. When the air cylinder driving solenoid valve 6 is in a non-excited state, compressed air is exhausted, and the hammer guide plate 11 operates integrally with the hammer 10.
The hammer is pulled up by the restoring force of the spring 9, which is equipped to pull the hammer upward. Hammering can be achieved by repeating and alternating these operations. The hammering cycle of this hammering can be freely adjusted up to a maximum of 2 times/second. Finally, compressed air is blown from a compressed air nozzle 12 onto the slag crushed by hammering so that no slag remains on the bead.
この実施例では、スパイラル鋼管内面溶接スラグ除去装
置１の大きさは、第１図の高さ方向が２１５ｎ＋ｍ、幅
方向が３６５１１Ｉｍ、奥行が８１ｍｍと非常にコンパ
クトにできており、６００ ｍｍ以下の小径スパイラル
鋼管でも内面のスラグを除去することができる。In this embodiment, the spiral steel pipe internal welding slag removal device 1 has a very compact size of 215n+m in the height direction, 36511m in the width direction, and 81mm in depth as shown in Fig. 1, and has a small diameter of 600 mm or less. Slag on the inner surface of spiral steel pipes can also be removed.
またハンマーの打撃力も７５ｋｇ−ｆと大きなものとし
たので、スラグ除去作業を能率良く行なうことができる
。Furthermore, since the impact force of the hammer is as large as 75 kg-f, the slag removal work can be carried out efficiently.
さらにスラグの除去を確実に行なうため、監視用のテレ
ビカメラも併設して、作業を行なっている。Furthermore, in order to ensure that slag is removed, a television camera is also installed for monitoring.
なおハンマリング装置については、本実施例に限定され
ることなく、慣用の機器を利用して行なってもよい。Note that the hammering device is not limited to this embodiment, and a conventional device may be used.
［発明の効果］
本発明のスパイラル鋼管内面溶接スラグ除去装置によれ
ば、装置本体がコンパクトに構成できるとともに、スラ
グのハンマリングに適したハンマリング条件を選ぶこと
ができるので、小径スパイラル鋼管の内面溶接スラグの
除去が可能になるとともに、スラグの除去が確実に、か
つ能率良く行なうことができる。したがって本発明の工
業的効果は大きい。[Effects of the Invention] According to the device for removing welded slag on the inner surface of a spiral steel pipe of the present invention, the main body of the device can be configured compactly, and hammering conditions suitable for hammering slag can be selected. Welding slag can be removed, and slag can be removed reliably and efficiently. Therefore, the industrial effects of the present invention are significant.
第１図は本発明の一実施例のスパイラル鋼管内面溶接ス
ラグ除去装置と示す斜視図、第２図はスラグ除去装置を
スパイラル鋼管内面にセットした状態を示す透視斜視図
、第３図はスラグ破砕状況を示すスパイラル鋼管および
溶接ビードを示す一部断面図、第４図はスパイラル鋼管
の造管状況を示す平面図である。
１・・・スパイラル鋼管内面溶接スラグ除去装置、２・
・圧縮空気ノズル、３・・・フレキシブルホース、４・
・・スラグ破砕装置、５・・・取付支持板、６・・・エ
アーシリンダー駆動用電磁弁、７・・エアーシリンダー
、８・・・ガイド柱、９・・・スプリング、１０・・・
ハンマー１１・・・ガイド板、１２・・・圧縮空気ノズ
ル、１３・・・フレキシブルホース、
１４・・・内面溶接機電極、１５・・・支持部材、１６
・・スラグ、２１・・・スパイラル鋼管、２２・・・鋼
板、２３・・・接合部。Fig. 1 is a perspective view showing an apparatus for removing slag on the inner surface of a spiral steel pipe according to an embodiment of the present invention, Fig. 2 is a perspective view showing the slag removal apparatus set on the inner surface of a spiral steel pipe, and Fig. 3 is a slag crusher. FIG. 4 is a partial cross-sectional view showing a spiral steel pipe and a weld bead showing the situation, and FIG. 4 is a plan view showing the manufacturing situation of the spiral steel pipe. 1...Spiral steel pipe inner welding slag removal device, 2.
・Compressed air nozzle, 3...Flexible hose, 4・
... Slag crushing device, 5... Mounting support plate, 6... Solenoid valve for driving air cylinder, 7... Air cylinder, 8... Guide column, 9... Spring, 10...
Hammer 11... Guide plate, 12... Compressed air nozzle, 13... Flexible hose, 14... Internal welding machine electrode, 15... Support member, 16
...Slag, 21...Spiral steel pipe, 22...Steel plate, 23...Joint part.
Claims (1)
いて、溶接スラグに圧縮空気を吹きつけて溶接スラグを
急冷する装置と、急冷された溶接スラグを連続上下動す
るハンマーで破砕するスラグ破砕装置と、破砕されたス
ラグを圧縮空気により吹き飛ばすビードクリーナーとか
らなることを特徴とするスパイラル鋼管内面溶接スラグ
除去装置。There are two types of equipment for removing welding slag from the inner surface of spiral steel pipes: a device that quenches the welding slag by blowing compressed air onto the welding slag, a slag crusher that crushes the quenched welding slag with a hammer that moves up and down continuously, and a slag crusher that crushes the quenched welding slag with a hammer that moves up and down continuously. A device for removing welding slag from the inner surface of a spiral steel pipe, comprising a bead cleaner that blows out slag from the inside of a spiral steel pipe using compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16034088A JPH0211275A (en) | 1988-06-28 | 1988-06-28 | Device for removing interior welding slag of spiral steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16034088A JPH0211275A (en) | 1988-06-28 | 1988-06-28 | Device for removing interior welding slag of spiral steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0211275A true JPH0211275A (en) | 1990-01-16 |
Family
ID=15712867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16034088A Pending JPH0211275A (en) | 1988-06-28 | 1988-06-28 | Device for removing interior welding slag of spiral steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0211275A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338439A (en) * | 2017-08-18 | 2017-11-10 | 芜湖鼎瀚再制造技术有限公司 | A kind of molten bits removal device of circular multi-point formula for laser melting coating |
| CN109420817A (en) * | 2017-08-21 | 2019-03-05 | 宝山钢铁股份有限公司 | A kind of the burner pore structure and its clinker removal method of hot scarfing machine |
| JP2019188439A (en) * | 2018-04-25 | 2019-10-31 | 株式会社神戸製鋼所 | Slag removal device |
| WO2021103635A1 (en) * | 2019-11-26 | 2021-06-03 | 中建科工集团有限公司 | Welding slag clearing device, welding machine head and welding system |
-
1988
- 1988-06-28 JP JP16034088A patent/JPH0211275A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338439A (en) * | 2017-08-18 | 2017-11-10 | 芜湖鼎瀚再制造技术有限公司 | A kind of molten bits removal device of circular multi-point formula for laser melting coating |
| CN109420817A (en) * | 2017-08-21 | 2019-03-05 | 宝山钢铁股份有限公司 | A kind of the burner pore structure and its clinker removal method of hot scarfing machine |
| CN109420817B (en) * | 2017-08-21 | 2020-12-22 | 宝山钢铁股份有限公司 | Burner nozzle hole structure of flame cleaning machine and slag cleaning method thereof |
| JP2019188439A (en) * | 2018-04-25 | 2019-10-31 | 株式会社神戸製鋼所 | Slag removal device |
| WO2021103635A1 (en) * | 2019-11-26 | 2021-06-03 | 中建科工集团有限公司 | Welding slag clearing device, welding machine head and welding system |
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