JPS591071A - Sealing device of inside surface for electric welded tube - Google Patents
Sealing device of inside surface for electric welded tubeInfo
- Publication number
- JPS591071A JPS591071A JP11106882A JP11106882A JPS591071A JP S591071 A JPS591071 A JP S591071A JP 11106882 A JP11106882 A JP 11106882A JP 11106882 A JP11106882 A JP 11106882A JP S591071 A JPS591071 A JP S591071A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- circumferential wall
- gas
- inner circumferential
- wall
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は電縫管の製造に際し溶接点およびその近傍を大
気から遮断するシール装置に係シ、特にシールドがツク
スによって管内の溶接点およびその近傍をガスシールド
する電縫管の内面シール装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing device for shielding a welding point and its vicinity from the atmosphere during the manufacture of an electric resistance welded pipe, and particularly relates to an electric resistance welding device in which the shield uses Tux to gas-shield the welding point and its vicinity in the pipe. This invention relates to a tube inner sealing device.
電縫管とは電気抵抗による発熱を利用して帯鋼の両縁を
集中的に加熱し圧接して溶接された鋼管をいい、との電
縫管を展進する場合、高マンガン材やクロム添加材を空
気中で溶接すると溶接部にペネトレータと称する欠陥が
生ずる。この対策として不活性ガス、例えばアルコ９ン
ガス、窒素ガスで溶接作業部をガスシールドする方法が
あシ、この−ｊｔ不シールド方法には直接ガスを吹き付
けゐ方法とシールドがツクスで囲む方法とがある。しか
し、前者は空気の巻き込みが生じシールドが不十分とな
るため一般には後者が採用されている。ERW pipe is a steel pipe that is welded by intensively heating both edges of a steel strip and press-welding it using heat generated by electrical resistance. When additive materials are welded in air, defects called penetrators occur in the weld. As a countermeasure for this, there is a method of gas-shielding the welding work area with an inert gas, such as alcohol gas or nitrogen gas.This unshielding method includes a method of directly spraying the gas and a method of surrounding the welding area with a shield. be. However, since the former causes air to be trapped and the shielding is insufficient, the latter is generally adopted.
この種の従来技術としては実開昭Ｆｉ−１３１９８３、
実開昭５６−９５４９１等が既に知られておシ、管内を
延在するマンドレルにシャワリングボックスが設けられ
、とのシャワリングボックス内をガスでみたすことによ
って溶接点をガスシールドするものである。しかし、こ
のシャワリングボックスはマンドレルに固定支持されて
いるため≠Φ雫上下に昇降できない。一方、帯
鋼はフィル状に巻いた長尺のものを巻きもどし、順次端
部を溶接して接続したエンドレス状となってお如、帯鋼
のその継ぎ目である溶接部はもり上がってその表面は粗
面となっている。そのため、この継ぎ目と接触してシャ
ワリングボックスが損傷するおそれがある。また、内径
の小さな管に利用できないことは勿論、内径の大きな管
に利用した場合にはシャワリングボックスと溶接点との
す、−き間が大きくなってシール機能が低下する。実開
昭５６−９５４９１に係る内面シール装置ではフラッシ
ュの除去手段として流水槽を設けているが、水を用いる
と分解して酸素が発生し電縫管の品質低下のおそれがあ
る。As this type of conventional technology, Utility Model Sho Fi-131983,
Utility Model Application No. 56-95491 is already known, in which a showering box is provided on a mandrel extending inside the pipe, and the welding point is gas-shielded by filling the inside of the showering box with gas. . However, since this shower box is fixedly supported by a mandrel, it cannot be raised or lowered by Φ drops. On the other hand, the steel strip is made into an endless shape by unwinding a long piece wound into a fill shape and sequentially welding the ends, and the welded part of the steel strip rises up and the surface has a rough surface. Therefore, there is a risk of damage to the shower box due to contact with this seam. Moreover, it goes without saying that it cannot be used for pipes with a small inner diameter, and if it is used for a pipe with a large inner diameter, the gap between the showering box and the welding point becomes large and the sealing function deteriorates. The internal sealing device according to Japanese Utility Model Publication No. 56-95491 is provided with a running water tank as a flash removal means, but if water is used, it will decompose and generate oxygen, which may deteriorate the quality of the electric resistance welded pipe.
とともに、シール機能の低下しない内面シール装置を提
供することを目的とする。Another object of the present invention is to provide an inner sealing device that does not deteriorate its sealing function.
本発明によれば、管内を延在するマンドレルに管内周壁
に接近させてシャワリングがツクスを設け、電縫管の溶
接に際しこのシャワリングがツクスから不活性ガスを噴
射させることによって溶接点およびその近傍をガスシー
ルドする内面シール装置において、シャワリングボック
スを昇降可能に構成するとともに、管内周壁に転接する
コロをジャワリンダがツクスに設は管内周壁とシャワリ
ングがツクスとのすき間を一定に保持するように構成さ
れていることを特徴とする電縫管の内面シール装置が提
供され、かかる構成によって上記目的が達成される。According to the present invention, a shower ring is provided on a mandrel extending inside the pipe in close proximity to the inner circumferential wall of the pipe, and when welding an ERW pipe, the shower ring injects inert gas from the thread to weld the welding point and the welding point. In an internal sealing device that shields the surrounding area from gas, the showering box is configured to be able to be raised and lowered, and rollers that contact the inner circumferential wall of the pipe are installed in the jaw cylinder to maintain a constant gap between the inner circumferential wall of the pipe and the shower ring. There is provided an inner surface sealing device for an electric resistance welded tube, which is configured as follows, and with this configuration, the above object is achieved.
以下、図面を参照して本発明の詳細な説明する。Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図〜第５図は本発明に係る電縫管の内面シール装置
の実施例を示す図である。FIGS. 1 to 5 are diagrams showing an embodiment of an internal sealing device for an electric resistance welded pipe according to the present invention.
第１図において、素管を進行させて溶接作業が行われて
いる状態（以下、造管中という）の素管１内にはマンド
レル２が延在しており、このマンドレル２の管軸方向所
定位置に固定部材３．３が固定され、この固定部材３．
３は管軸方向に延びた連結部材４で互いに連結されてい
る。In Fig. 1, a mandrel 2 extends inside the raw pipe 1 in a state where the raw pipe is advanced and welding work is being performed (hereinafter referred to as pipe making), and the mandrel 2 extends in the pipe axial direction. A fixing member 3.3 is fixed in place;
3 are connected to each other by a connecting member 4 extending in the tube axis direction.
シャワリングがツクス５はリンク６．６によって前記連
結部材４に接続され、この一方のリンク６にはシリンダ
７のロッド８先端部が枢着され、このシリンダ７の他端
は固定部材３に取シ付けられたブラケット９に枢着され
、シリンダ７の作動によってシャワリングボックス５が
溶接点１０の真下付近を上下に昇降できるように構成さ
れている。このため、造管開始時あるいは継ぎ目通過時
にはシャワリングがツクス５を降下させて管内周壁、継
ぎ目との接触を避けることができる。The shower ring 5 is connected to the connecting member 4 by a link 6.6, the tip of a rod 8 of a cylinder 7 is pivotally attached to one of the links 6, and the other end of the cylinder 7 is attached to the fixed member 3. The showering box 5 is pivotally connected to a bracket 9 attached to the welding point 10, and is configured so that the showering box 5 can be moved up and down in the vicinity directly below the welding point 10 by the operation of the cylinder 7. Therefore, at the time of starting pipe production or passing through a joint, the showering unit lowers the tube 5 to avoid contact with the pipe inner circumferential wall and the joint.
シリンダ７とリンク６の働ぎによってジャワリンダがツ
クス６は常に上方に押されているが、シャワリングがツ
クス５後側壁上部にはブラケット１１を介して第２図に
示されるように管内周壁に転接するコロ１２が設けられ
ておシ、管内周壁と＃２ツクへ５とのすき間は常に一定
に保たれる。これによって、内径の異なる管の溶接にも
適用することができる。Due to the action of the cylinder 7 and the link 6, the Java cylinder and the Tux 6 are always pushed upward, but the shower ring is attached to the upper part of the rear side wall of the Tux 5 via the bracket 11 to the inner circumferential wall of the pipe as shown in FIG. Since rolling rollers 12 are provided, the gap between the pipe inner circumferential wall and the #2 hook 5 is always kept constant. This allows it to be applied to welding pipes with different inner diameters.
第３図〜第５図はシャワリングボックス５を示す図であ
る。3 to 5 are diagrams showing the showering box 5. FIG.
シャワリングがツクス５は管内周壁に平行な曲面で外周
が長方形状をなす上部壁１３を有しておシ、この上部壁
１３は４つの長方形状の上部壁面ＩＳＡ、１３Ｂ、１３
０．．１３Ｄからなっておシ、中央には長方形状の開口
部１４が形成されている。The showering device 5 has an upper wall 13 having a rectangular outer circumference and a curved surface parallel to the inner peripheral wall of the pipe, and this upper wall 13 has four rectangular upper wall surfaces ISA, 13B, 13.
0. ．． 13D, and a rectangular opening 14 is formed in the center.
この上部壁虜１，３外周縁は垂直に延びた外側壁ＩＳ（
外側壁面はそれぞれ１３Ａ、１５Ｂ、１５０．１５Ｄと
する）Ｋつながってお〕、上部壁１３と外側壁１５とに
よってシャワリングボックス５の上部外周壁が形成され
、略カマがコ状を呈している。The outer periphery of these upper wall caps 1 and 3 is the vertically extending outer wall IS (
The outer wall surfaces are respectively 13A, 15B, and 150.15D. .
上部壁１３中夫に 形成され７ｉる開口部
１４の周縁からは内周壁１ｆＩが垂直下方に延びておシ
、この内周壁１６によって凹部１７と７ラツシユ落下用
貫通孔１８とが形成されている。このフラッシュ落下用
貫通孔１８は溶接点１０の真下に形成され、シャワリン
グがツクス５下部に突設形成された角柱状の筒体１９に
囲まれている。An inner circumferential wall 1fI extends vertically downward from the periphery of an opening 14 formed in the middle of the upper wall 13, and a recess 17 and a through hole 18 for falling 7 lashes are formed by this inner circumferential wall 16. . This flash drop through hole 18 is formed directly below the welding point 10, and the shower ring is surrounded by a prismatic cylinder 19 projecting from the lower part of the Tux 5.
上部壁１３′および内周壁１６には多数のガス噴出孔２
０が穿設されておシ、このガス噴出孔２０から溶接点１
．０付近にガスが均等に噴出される。A large number of gas ejection holes 2 are provided in the upper wall 13' and the inner circumferential wall 16.
0 is drilled, and welding point 1 is connected from this gas injection hole 20.
．． Gas is ejected evenly near zero.
外側壁１５内側、凹部底面壁１７Ａ裏側、および筒体外
周壁１９ム内側には、ガスが別系統に配管されそれぞれ
水平にガス管２１Ａ１２１Ｂ。Gas is piped into separate systems on the inside of the outer wall 15, on the back side of the recess bottom wall 17A, and on the inside of the cylindrical outer circumferential wall 19m, with horizontal gas pipes 21A and 121B.
２１０が配設されている。ガス管２１の配設された各区
域間には隔壁２３が形成されており、ガス管２１にはガ
ス吐出孔２２が穿設されている。ガスがシャワリング−
ツクス６壁面の多数のガス噴出孔２０全体から均等に噴
出できるよう３出孔２２は外側壁１５、筒体外周壁１９
Ａに向けて設けられている。ガス管２１Ａのガス圧はガ
ス管２１Ｂおよびガス管２１０のガス圧よシ高められて
おシ、これによって開口部１４ＩＡ周上方圧ガスカーテ
ンが形成され、開口部１４、すなわち溶接点１０の真下
にはゆるやかに対流するガス充満室が形成されて溶接点
１ｏは確実にシールされる。210 is arranged. A partition wall 23 is formed between each area where the gas pipe 21 is provided, and a gas discharge hole 22 is bored in the gas pipe 21 . Showering gas
The three outlet holes 22 are located on the outer wall 15 and the cylindrical outer circumferential wall 19 so that the gas can be ejected evenly from the entire large number of gas outlet holes 20 on the wall surface of the TUX 6.
It is set towards A. The gas pressure in the gas pipe 21A is higher than that in the gas pipes 21B and 210, thereby forming an upward pressure gas curtain around the opening 14IA, and directly below the opening 14, that is, the welding point 10. A gas-filled chamber with gentle convection is formed, and the welding point 1o is reliably sealed.
上部壁１３および内周壁１６とガス管２１との間にはガ
ス噴出孔２ＱＡの穿設された内壁２４が設けられており
、一層均等にガスが噴出される。An inner wall 24 having gas ejection holes 2QA is provided between the upper wall 13 and the inner circumferential wall 16 and the gas pipe 21, so that gas is ejected more evenly.
造管中に生じるフラッシュ２６はフラッシュ落下用貫通
孔１８から下方に落下するため、上部壁１３、内周壁１
６に節理してガス噴出孔２ｏを烏ぐことはなくガスシー
ルドに影譬を及ばずことはない。Since the flash 26 generated during pipe making falls downward from the flash drop through hole 18, the upper wall 13 and the inner peripheral wall 1
6, the gas ejection hole 2o will not be obstructed, and the gas shield will not be affected.
第６図は別の実施例を示すもので、中二−ンｚツクス５
の先後両鍔側壁１６Ａ、１！Ｓｏ、Ｊ：部にブラケット
１１を介して管内周壁に転接する：ｆａ１２Ａ、１２Ｂ
を設けたものである。第１′実施例においては第７図に
示すように、造管開始当初、シャワリング？ツクス５と
管内周壁との接触の防止を考慮する必要があるが、この
第２実施例においては・コロ１２Ｂが設けられているた
め、造管開始当初においてもシャワリングがツクス５と
管内周壁との接触は防止され、かつ管内周壁とシャワリ
ング？ツクス５とのすき間は一定に保持される。FIG. 6 shows another embodiment, in which the middle
Front and rear both tsuba side walls 16A, 1! So, J: Attached to the pipe inner circumferential wall via the bracket 11: fa12A, 12B
It has been established. In the 1'th embodiment, as shown in FIG. 7, at the beginning of pipe production, showering? Although it is necessary to take into consideration prevention of contact between the Tux 5 and the inner peripheral wall of the pipe, in this second embodiment, the rollers 12B are provided, so that even at the beginning of pipe production, showering does not occur between the Tux 5 and the inner peripheral wall of the pipe. Contact with the inner peripheral wall of the pipe is prevented, and showering is prevented. The gap with the tux 5 is kept constant.
尚、管内周壁に周縁が摺接するシール部材を有する管内
シール装置や溶着作業部を管外から覆うシールドカバー
を併用することＫよシ一層シール効果を高める仁とがで
きる。It should be noted that the sealing effect can be further enhanced by using together with an intra-pipe sealing device having a sealing member whose peripheral edge slides on the inner circumferential wall of the pipe and a shield cover that covers the welding work section from outside the pipe.
以上の説明から明らかなように、本発明によれば、管内
の溶接作業部を確実にシールできるとともに、内径の異
なる電縫管の製造にも、適用でき、そのシール機能が劣
ることはない。As is clear from the above description, according to the present invention, it is possible to reliably seal the welding part within the pipe, and it can also be applied to the manufacture of electric resistance welded pipes with different inner diameters, without degrading the sealing function.
第１図は本発明に係る電縫管の内面シール装置の第１実
施例の断面図、第２図はコロの枳大図、第３図はシャワ
リング？ツクスの斜視図、第４図は第３図に示す線ＩＶ
−Ｎに沿う断面図、第５図は第３図に示す線■−■に沿
う断面図、第６図は本発明の第２夾施例の造管開始当初
の断面図、第７図は本発明の第１実施例の造管当初の断
面図である。
ｌ・・・［］Ｆ、２・・・マンドレル、５・・・シャツ
リングゲックス、
６・・・リンク、 ７・・・シリンダ、１０・
・・溶接点、 １２・・・コロ２０．２０Ａ・・・
ガス噴出孔、
２１Ａ、２１Ｂ１２１０・・・ガス管。
代理人 鵜 沼 辰 之
（ほか２名）
第３図
第４図
第５図Fig. 1 is a cross-sectional view of the first embodiment of the inner sealing device for an electric resistance welded pipe according to the present invention, Fig. 2 is a general view of the roller, and Fig. 3 is a shower ring. Perspective view of Tuxus, Figure 4 is line IV shown in Figure 3.
-N, FIG. 5 is a sectional view along the line ■-■ shown in FIG. FIG. 2 is a cross-sectional view of the first embodiment of the present invention at the time of pipe production. l... [] F, 2... Mandrel, 5... Shirtling Gex, 6... Link, 7... Cylinder, 10...
...Welding point, 12...Roll 20.20A...
Gas outlet, 21A, 21B1210... gas pipe. Agent Tatsuyuki Unuma (and 2 others) Figure 3 Figure 4 Figure 5
Claims (3)
させてシャワリングがツクスを設け、電縫管の溶接に際
しこのシャワリングがツクスから不活性ガスを噴射させ
ることＫよって溶接点およびその近傍をガスシールドす
る内面シール装置において、シャワリング？ツクスを昇
降可能に構成するとともに、管内周壁に転接するコロを
シャワリングがツクスに設は管内周壁とシャワリングが
ツクスとのすき間を一定に保持するように構成されてい
ることを特徴とする電縫管の内面シール装置。(1) A shower ring is provided on the mandrel extending inside the pipe close to the inner circumferential wall of the pipe, and when welding the ERW pipe, the shower ring injects inert gas from the pipe. Showering in the internal seal device for gas shielding? The electric current is characterized in that the Tx is configured to be able to be raised and lowered, and the shower ring is provided with rollers that make contact with the inner circumferential wall of the pipe, and the gap between the inner circumferential wall of the pipe and the shower ring is maintained constant. Sewing tube inner seal device.
スの先゛後両側壁に設けたことを特徴とする特許請求の
範囲第１項記載の電縫管の内面シール装置。(2) The inner surface sealing device for an electric resistance welded pipe according to claim 1, characterized in that rollers that make rolling contact with the inner circumferential wall of the pipe are provided on both walls of the front and rear sides of the shower gear.
部壁を有し、この上部壁中央に凹一部および７ラツシユ
落下用貫通孔につながる開口部が形成され、この開口部
外周上方に噴射されるガス圧を開口部内に噴射されるガ
ス圧よシ高くならしめたことを特徴とする特許請求の範
囲第１項または第２項記載の電縫管の内面シール装置。(3) The showering gear has an upper wall parallel to the inner circumferential wall of the pipe, and a concave part and an opening connected to the through hole for dropping the 7 lashes are formed in the center of this upper wall, and the spray is sprayed above the outer periphery of this opening. 3. The inner surface sealing device for an electric resistance welded pipe according to claim 1 or 2, wherein the pressure of the gas injected into the opening is made higher than the pressure of the gas injected into the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11106882A JPS591071A (en) | 1982-06-28 | 1982-06-28 | Sealing device of inside surface for electric welded tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11106882A JPS591071A (en) | 1982-06-28 | 1982-06-28 | Sealing device of inside surface for electric welded tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS591071A true JPS591071A (en) | 1984-01-06 |
Family
ID=14551569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11106882A Pending JPS591071A (en) | 1982-06-28 | 1982-06-28 | Sealing device of inside surface for electric welded tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591071A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03117396A (en) * | 1989-09-27 | 1991-05-20 | Mitsubishi Electric Corp | Secondary exciter for ac exciting synchronous machine |
-
1982
- 1982-06-28 JP JP11106882A patent/JPS591071A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03117396A (en) * | 1989-09-27 | 1991-05-20 | Mitsubishi Electric Corp | Secondary exciter for ac exciting synchronous machine |
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