JPH10140251A - Heat treatment equipment for seam in electric resistance welded tube - Google Patents
Heat treatment equipment for seam in electric resistance welded tubeInfo
- Publication number
- JPH10140251A JPH10140251A JP29644396A JP29644396A JPH10140251A JP H10140251 A JPH10140251 A JP H10140251A JP 29644396 A JP29644396 A JP 29644396A JP 29644396 A JP29644396 A JP 29644396A JP H10140251 A JPH10140251 A JP H10140251A
- Authority
- JP
- Japan
- Prior art keywords
- heat treatment
- seam
- electric resistance
- resistance welded
- seam heat
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電縫管製造ライン
において、シーム部の熱処理不良に起因する歩留り落ち
を確実に防止できる電縫管のシーム熱処理設備に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seam heat treatment facility for an electric resistance welded pipe, which can reliably prevent a yield drop due to a heat treatment defect in a seam portion in an electric resistance welded pipe production line.
【０００２】[0002]
【従来の技術】図３は従来の電縫管製造ラインにおける
設備構成を示した概略図である。この図３において、コ
イル状に巻回された帯状金属板２は、アンコイラー１で
巻き戻され、ガイドローラ３を介して成形ロール群４を
順次経るうちに次第に断面円形状に成形され、その後、
高周波加熱装置５により板縁部を溶融状態にまで加熱さ
れ、スクイズロール６によって溶着接合される。そし
て、板縁部を溶着接合された管は、その後ビード切削機
７，シーム部誘導加熱装置（以下、「シーム熱処理装
置」という）８，冷却装置９を経てサイジングロール群
１０を通過し、走行切断機１１によって定尺に切断され
管１２となる。2. Description of the Related Art FIG. 3 is a schematic diagram showing the equipment configuration in a conventional electric resistance welded pipe production line. In FIG. 3, the strip-shaped metal plate 2 wound in a coil shape is rewound by the uncoiler 1, and is gradually formed into a circular cross section while sequentially passing through the forming roll group 4 via the guide roller 3.
The plate edge is heated to a molten state by the high-frequency heating device 5 and welded and joined by the squeeze roll 6. Then, the pipe having the plate edge welded is passed through a sizing roll group 10 via a bead cutting machine 7, a seam induction heating device (hereinafter, referred to as a "seam heat treatment device") 8, and a cooling device 9, and travels. The tube 12 is cut into a fixed length by a cutting machine 11.
【０００３】ここで、シーム熱処理装置８は管の溶接シ
ーム部を誘導加熱によって管の肉厚，規格グレード，用
途等によって定まる所定の温度まで昇温するものである
が、近年の管の厚肉化，高グレード化によって管への必
要投入熱量が増加しているので、このシーム熱処理装置
８は図４に示すように多段化（図４では８ａ〜８ｅの５
段）の一途をたどっている。[0003] The seam heat treatment apparatus 8 raises the temperature of the welded seam of the pipe to a predetermined temperature determined by the thickness of the pipe, the grade of the standard, the application, etc. by induction heating. Since the required heat input to the pipe is increasing due to the increase in the quality and the grade, the seam heat treatment apparatus 8 is multi-staged as shown in FIG.
Dan).
【０００４】しかしながら、上記したような従来のシー
ム熱処理装置にあっては以下に述べるような問題があ
る。すなわち、操業中にラインが何等かの原因、例えば
操業上のトラブルや設備の故障等によって停止した場合
には、シーム熱処理装置の加熱範囲内に存在した管（図
４中において長さＬ2 に該当する範囲の管）は、加熱が
停止するために一旦常温まで冷却される。そして、再び
ラインが操業を開始した時には、改めて加熱を開始する
ために、前記Ｌ2 の加熱範囲内に存在した管については
加熱不足となって所定の熱処理温度条件を満足できず、
当該範囲内の管は製造不良品としてスクラップにせざる
を得なくなる。その上、上記した近年のシーム熱処理装
置の多段化によって上記Ｌ2 の範囲は大きくなってお
り、歩留り低下代は極めて大きくなってきている。な
お、図４中のＬ1 は適正熱処理部を示す。[0004] However, the conventional seam heat treatment apparatus as described above has the following problems. That is, if the line is stopped during operation due to some cause, for example, an operation trouble or equipment failure, the pipe existing within the heating range of the seam heat treatment apparatus (length L 2 in FIG. 4). The corresponding range of tubes) is once cooled to room temperature to stop heating. Then, when the re-line began operating in order to start again heated, can not satisfy a predetermined heat treatment temperature becomes insufficient heating for tubes was present in the heating range of the L 2,
Tubes in this range must be scrapped as defective products. Moreover, the scope of the L 2 by a multi-stage in recent years of the seam heat treatment device described above is larger, yield drop allowance has become extremely large. Incidentally, L 1 in FIG. 4 shows a proper thermal processing.
【０００５】この問題を解決するために、本出願人は、
特願平７−１２３６９５号で、図５に示すように、製造
ラインの流れ方向に移動可能な台車１３上にシーム熱処
理装置８を載設したものを提案した。この装置では、ラ
インの操業を停止した際の熱処理不良部より下流側の適
正熱処理域までこの装置を移動させておき、ラインの
再開と同時に熱処理を開始し、不良部を適正温度まで再
加熱するか、また、この装置を上流に移動させながら
不良部を適正温度まで再加熱し、その後ラインを再開さ
せる、ことにより熱処理不良部をなくし、歩留りを向上
させるというものである。In order to solve this problem, the present applicant has
In Japanese Patent Application No. 7-123695, a device in which a seam heat treatment apparatus 8 is mounted on a carriage 13 movable in the flow direction of a production line as shown in FIG. 5 was proposed. In this equipment, this equipment is moved to the appropriate heat treatment area downstream from the heat treatment defective part when the line operation is stopped, heat treatment is started at the same time as restarting the line, and the defective part is reheated to an appropriate temperature. Alternatively, the defective portion is reheated to an appropriate temperature while moving the apparatus upstream, and then the line is restarted, thereby eliminating the heat treatment defective portion and improving the yield.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、特願平
７−１２３６９５号で提案した装置は、本出願人のその
後の実験、研究により以下に述べるような問題を内在し
ていることが判明した。However, the apparatus proposed in Japanese Patent Application No. 7-123695 has been found by the subsequent experiments and studies of the present applicant to have the following problems.
【０００７】すなわち、近年の溶接管の高グレード化に
伴い、溶接部に高い靱性が求められるようになってきて
いる。鋼の靱性を向上させるには、一般的には、結晶粒
を微細に、かつ、均一にすることが必要であり、電縫溶
接管においては、シーム部を誘導加熱した後に水冷等に
よる冷却手段を用いて、所定の冷却開始温度から所定の
冷却速度で急冷する必要がある。しかし、前述した装置
では、その特徴上、シーム熱処理装置８のみがラインの
流れ方向に移動することから、下流側に移動した場合に
は、その範囲内には冷却のための手段を設置することが
できず、必然的にシーム熱処理装置８と冷却装置９の距
離が大きくなってしまう。That is, with the recent increase in the grade of a welded pipe, a high toughness has been required for a welded portion. In general, in order to improve the toughness of steel, it is necessary to make crystal grains fine and uniform. In ERW pipes, cooling means such as water cooling is used after induction heating a seam portion. , It is necessary to rapidly cool at a predetermined cooling rate from a predetermined cooling start temperature. However, in the above-mentioned apparatus, since only the seam heat treatment apparatus 8 moves in the flow direction of the line due to its characteristic, if it moves downstream, it is necessary to install cooling means within the range. And the distance between the seam heat treatment device 8 and the cooling device 9 is inevitably increased.
【０００８】このような装置において、溶接部に靱性が
求められる溶接管を製造しようとした場合、シーム熱処
理装置と冷却装置の間で加熱部が空冷されて低温化する
ため、狙った開始温度、速度での冷却が不可能になり、
所定の靱性が得られなくなる。よって、この装置では靱
性仕様付ではない溶接管の生産においては歩留り向上に
有効であるが、靱性仕様付の溶接管の生産にあっては歩
留り向上に役立たない。In such an apparatus, when an attempt is made to manufacture a welded pipe requiring a toughness in the welded portion, the heating portion is air-cooled between the seam heat treatment device and the cooling device to lower the temperature. Cooling at speed becomes impossible,
Predetermined toughness cannot be obtained. Therefore, this apparatus is effective for improving the yield in the production of a welded pipe having no toughness specification, but is not useful for improving the yield in producing a welded pipe with the toughness specification.
【０００９】本発明は、上記した従来の問題点に鑑みて
なされたものであり、靱性仕様付の管の場合であって
も、シーム部の熱処理不良に起因する歩留り落ちを簡単
な構造で防止可能な電縫管のシーム熱処理設備を提供す
ることを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. Even in the case of a tube having a toughness specification, a simple structure is used to prevent the yield from dropping due to a poor heat treatment at a seam portion. It is an object of the present invention to provide a seam heat treatment facility for an electric resistance welded pipe.
【００１０】[0010]
【課題を解決するための手段】上記した目的を達成する
ために、本発明の電縫管のシーム熱処理設備は、シーム
熱処理装置と冷却装置を、電縫管製造ラインの流れ方向
に沿うて前後移動が可能なように構成しているのであ
る。このようにすることで、狙った開始温度、速度での
冷却が可能になる。In order to achieve the above-mentioned object, a seam heat treatment equipment for an electric resistance welded pipe according to the present invention comprises a seam heat treatment apparatus and a cooling apparatus which are arranged back and forth along a flow direction of an electric resistance welded pipe production line. It is configured so that it can be moved. By doing so, cooling at the targeted start temperature and speed becomes possible.
【００１１】[0011]
【発明の実施の形態】本発明の電縫管のシーム熱処理設
備は、電縫管製造ラインにおける溶接機の下流側に配置
されたシーム熱処理装置と、このシーム熱処理装置の直
後に配置された冷却装置を、電縫管製造ラインの流れ方
向に沿うて前後移動が可能なように構成したものであ
り、必要に応じて、シーム熱処理装置と冷却装置を、電
縫管製造ラインの流れ方向と直角方向への移動をも可能
なように構成している。BEST MODE FOR CARRYING OUT THE INVENTION The seam heat treatment equipment for an electric resistance welded pipe according to the present invention includes a seam heat treatment apparatus disposed downstream of a welding machine in an electric resistance welded pipe production line, and a cooling apparatus disposed immediately after the seam heat treatment apparatus. The device is configured to be able to move back and forth along the flow direction of the ERW pipe production line, and if necessary, the seam heat treatment device and the cooling device are set at right angles to the flow direction of the ERW pipe production line. It is configured to be able to move in the direction.
【００１２】本発明の電縫管のシーム熱処理設備では、
ライン停止後の再スタートに際して、予めシーム熱処理
装置の最終段がその下流側に位置する管の適正熱処理部
上にあたる位置になるまでシーム熱処理装置と冷却装置
を下流側に移動させておけば、シーム部の熱処理不良部
をなくすることができる。In the seam heat treatment equipment for an electric resistance welded pipe according to the present invention,
When the seam heat treatment device and the cooling device are moved to the downstream side until the last stage of the seam heat treatment device reaches the position on the appropriate heat treatment section of the pipe located downstream thereof before restarting after the line is stopped, the seam It is possible to eliminate the heat treatment defective part of the part.
【００１３】[0013]
【実施例】以下、本発明の電縫管のシーム熱処理設備を
図１及び図２に示す一実施例に基づいて説明する。図１
は本発明の電縫管のシーム熱処理設備の一実施例を示す
概略正面図、図２は本発明の電縫管のシーム熱処理設備
を用いてシーム部を熱処理する方法を説明する図面であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seam heat treatment facility for an electric resistance welded pipe according to the present invention will be described below with reference to an embodiment shown in FIGS. FIG.
FIG. 1 is a schematic front view showing an embodiment of the seam heat treatment equipment for an electric resistance welded pipe according to the present invention, and FIG. 2 is a drawing for explaining a method of heat treating a seam portion using the seam heat treatment equipment for an electric resistance welded pipe according to the present invention.
【００１４】図１において、２１は例えば５段に構成さ
れたシーム熱処理装置であり、管１２のシーム部の揺れ
に対して追従できるように、電縫管製造ラインの流れ方
向に対して直角の方向に移動可能な横行台車２２上に載
置されており、また、各段においてその下流側に公知の
温度計１４が設置されて加熱部の温度を測定するように
構成されている。In FIG. 1, reference numeral 21 denotes a seam heat treatment apparatus having, for example, five stages, which is perpendicular to the flow direction of the electric resistance welded pipe production line so as to follow the fluctuation of the seam portion of the pipe 12. It is mounted on a traversing carriage 22 that can move in the direction, and a known thermometer 14 is installed downstream of each stage to measure the temperature of the heating unit.
【００１５】２３は前記シーム熱処理装置２１の直後に
配置された冷却装置である例えば水冷ノズルであり、こ
の水冷ノズル２３も前記したシーム熱処理装置２１と同
様に横行台車２２上に載置されており、また、その下流
側に公知の温度計１４が設置されて冷却部の温度を測定
するように構成されている。Reference numeral 23 denotes a cooling device, for example, a water-cooled nozzle disposed immediately after the seam heat treatment device 21. This water-cooled nozzle 23 is also mounted on the traversing carriage 22 similarly to the seam heat treatment device 21 described above. A well-known thermometer 14 is provided downstream of the thermometer 14 so as to measure the temperature of the cooling unit.
【００１６】２４は電縫管製造ラインの進行方向に移動
可能な走行台車であり、この走行台車２４上に前記横行
台車２２を介してシーム熱処理装置２１と水冷ノズル２
３が載設されている。そして、この走行台車２４の電縫
管製造ラインの流れ方向における位置は位置検出装置２
５によって検出され、その検出位置は熱処理制御用計算
機２６に入力される。熱処理制御用計算機２６には、さ
らに前記温度計１４で測定された温度と、ライン速度検
出装置２７によって測定されたライン速度が入力され、
これら入力値に基づいてフィードバック制御により熱処
理温度，ライン速度，走行台車２４の位置を制御してい
る。Numeral 24 denotes a traveling carriage movable in the traveling direction of the electric resistance welded pipe production line. The seam heat treatment apparatus 21 and the water cooling nozzle 2 are mounted on the traveling carriage 24 via the traversing carriage 22.
3 are mounted. The position of the traveling vehicle 24 in the flow direction of the ERW pipe manufacturing line is determined by the position detecting device 2.
5, and the detected position is input to the heat treatment control computer 26. The temperature measured by the thermometer 14 and the line speed measured by the line speed detecting device 27 are further input to the heat treatment control computer 26,
The heat treatment temperature, the line speed, and the position of the traveling vehicle 24 are controlled by feedback control based on these input values.
【００１７】上記した本実施例は熱処理温度，ライン速
度，走行台車２４の位置を自動制御する場合の一例であ
り、これらを手動制御する場合には温度計１４，ライン
速度検出装置２７，位置検出装置２５や熱処理制御用計
算機２６等は必要ない。The above-described embodiment is an example of the case where the heat treatment temperature, the line speed, and the position of the traveling vehicle 24 are automatically controlled. When these are manually controlled, the thermometer 14, the line speed detection device 27, the position detection The device 25 and the heat treatment control computer 26 are not required.
【００１８】本発明のシーム熱処理設備は上記したよう
な構成であり、以下、本発明のシーム熱処理設備を用い
てシーム熱処理を行う方法の例について説明する。 〔その１〕図２に示すように、電縫管製造ライン停止後
の再スタート前に、シーム熱処理装置２１をその最終段
２１ｅが下流側の適正熱処理部（図中のＬ1 で示す範
囲）上にあたる位置２１Ｂまで移動させておく。The seam heat treatment equipment of the present invention is configured as described above. Hereinafter, an example of a method for performing seam heat treatment using the seam heat treatment equipment of the present invention will be described. [Part 1] As shown in FIG. 2, before the restart of the electric resistance welded pipe manufacturing line, before the restart, the seam heat treatment apparatus 21 is moved to the appropriate heat treatment section on the downstream side (the range indicated by L 1 in the figure). It is moved to the upper position 21B.
【００１９】その後、ライン再開と同時に熱処理及び冷
却を開始する。この時は最終段２１ｅの下流側に設置し
た温度計１４の下方には既に熱処理したシーム部が位置
しているので、当該シーム部を測温できて出力の制御が
可能となり、そのシーム部は直後で順次冷却されること
になる。そして、停止前の適正熱処理部（Ｌ1 ）以内に
おいて最終段２１ｅによる加熱が適正温度に達するよう
にライン速度及び熱処理装置出力を制御する。最終段２
１ｅによる加熱後の熱処理が適正温度範囲内になった後
は出力を制御しながらシーム熱処理装置２１全段を移動
前の基準位置２１Ａまで移動する。After that, heat treatment and cooling are started simultaneously with the restart of the line. At this time, since the seam portion which has already been heat-treated is located below the thermometer 14 installed on the downstream side of the final stage 21e, the seam portion can be measured and its output can be controlled. Immediately afterwards, it will be sequentially cooled. Then, the line speed and the output of the heat treatment apparatus are controlled so that the heating by the final stage 21e reaches the appropriate temperature within the appropriate heat treatment section (L 1 ) before the stop. Last stage 2
After the heat treatment after heating by 1e is within the appropriate temperature range, the entire stage of the seam heat treatment apparatus 21 is moved to the reference position 21A before movement while controlling the output.
【００２０】〔その２〕電縫管製造ライン停止後の再ス
タート前に、シーム熱処理装置２１の最終段２１ｅを下
流側の適正熱処理部（Ｌ1 ）上にあたる位置２１Ｂまで
移動させておく。その後、先ず熱処理及び冷却を開始す
ると同時にシーム熱処理装置２１全段の上流方向への移
動を開始する。この時は最終段２１ｅの下流側に設置し
た温度計１４の下方には既に熱処理したシーム部が位置
しているので、当該シーム部を測温できて出力の制御が
可能となる。[2] Before restarting after the electric resistance welded pipe production line is stopped, the final stage 21e of the seam heat treatment apparatus 21 is moved to a position 21B corresponding to the downstream appropriate heat treatment section (L 1 ). Thereafter, first, the heat treatment and cooling are started, and at the same time, the seam heat treatment apparatus 21 starts moving in the upstream direction in all stages. At this time, since the seam portion already heat-treated is located below the thermometer 14 installed on the downstream side of the final stage 21e, the seam portion can be measured and the output can be controlled.
【００２１】そして、停止前の適正熱処理部（Ｌ1 ）内
において最終段２１ｅによる加熱が適正温度に達するよ
うにシーム熱処理装置２１の移動速度及び出力を制御す
る。最終段２１ｅによる加熱が適正温度範囲内に達する
よう走行台車２４の移動速度及びシーム熱処理装置２
１，水冷ノズル２３の出力を制御する。そして、最終段
２１ｅによる加熱後の熱処理が適正温度範囲内になった
後にラインを再スタートさせ、出力を制御しながらシー
ム熱処理装置２１全段及び水冷ノズル２３を移動前の基
準位置２１Ａまで移動してゆく。The moving speed and output of the seam heat treatment apparatus 21 are controlled such that the heating by the final stage 21e reaches an appropriate temperature in the appropriate heat treatment section (L 1 ) before the stop. The moving speed of the traveling vehicle 24 and the seam heat treatment apparatus 2 are set such that the heating by the final stage 21e reaches within an appropriate temperature range.
1. The output of the water cooling nozzle 23 is controlled. Then, after the heat treatment after heating by the final stage 21e is within the appropriate temperature range, the line is restarted, and the entire stage of the seam heat treatment device 21 and the water cooling nozzle 23 are moved to the reference position 21A before movement while controlling the output. Go on.
【００２２】なお、シーム熱処理装置と冷却装置を横行
台車２２に載置し、それぞれを製造ラインの流れ方向と
直角方向への移動を可能としたのは、電縫管のシームに
それぞれを芯合わせをするため、あるいは、ラインの修
理等でそれぞれを退避させる必要時に退避させるためで
ある。The seam heat treatment apparatus and the cooling apparatus are mounted on the traversing carriage 22 and can be moved in the direction perpendicular to the flow direction of the production line. This is for the purpose of evacuation or for evacuation when necessary for evacuation for repair of a line.
【００２３】これらの方法によって、溶接部靱性仕様付
の溶接管の生産においても、ラインの停止によって発生
する熱処理不良部をオンラインにて１００％適正に再熱
処理でき、スクラップの発生による歩留りの低下を防止
できる。By these methods, even in the production of a welded pipe with a welded part toughness specification, the defective heat treatment part caused by the stoppage of the line can be re-heated 100% properly on-line, and the reduction of the yield due to the generation of scrap can be prevented. Can be prevented.
【００２４】次に、本発明のシーム熱処理設備の効果を
確認するために行った実施結果について説明する。外径
が５０８．０ｍｍ、肉厚が１６．１３ｍｍの溶接部靱性
仕様付の溶接管を１０００トン製造するに際し、本発明
のシーム熱処理設備を用い、前記した〔その１〕の方法
によって熱処理した。この製造中には２０回のライン停
止があったが、熱処理不良によるスクラップの発生は皆
無であった。一方、この製造に際して本発明のシーム熱
処理設備を使用しなかった場合には、一回の停止によっ
て発生する熱処理不良部は従来は約１４ｍであり、それ
が２０回発生したことからスクラップは２８０ｍ相当
分、約５４．８トン発生したはずである。これは製造量
の５．５％に相当することから、本発明のシーム熱処理
設備を使用した場合の歩留り低下の防止効果は絶大であ
ることが判る。Next, a description will be given of the results of execution performed to confirm the effects of the seam heat treatment equipment of the present invention. In producing 1000 tons of a welded pipe having an outer diameter of 508.0 mm and a wall thickness of 16.13 mm with a welded toughness specification, heat treatment was performed by the above-mentioned method [1] using the seam heat treatment equipment of the present invention. During this production, there were 20 line stoppages, but no scrap was generated due to poor heat treatment. On the other hand, when the seam heat treatment equipment of the present invention was not used in this production, the heat treatment defective portion generated by one stop was about 14 m in the past, and the scrap was equivalent to 280 m since it was generated 20 times. It should have generated about 54.8 tons per minute. Since this corresponds to 5.5% of the production amount, it can be seen that the effect of preventing the decrease in yield when the seam heat treatment equipment of the present invention is used is enormous.
【００２５】本実施例では、シーム熱処理装置２１と水
冷ノズル２３を別の横行台車２２に載設したものを示し
たが、同じ横行台車２２に載設してもよい。また、シー
ム部の揺れが無視できる程度であれば、シーム熱処理装
置２１と水冷ノズル２３を直接走行台車２４に載設しも
よい。In this embodiment, the seam heat treatment apparatus 21 and the water-cooling nozzle 23 are mounted on another traversing carriage 22, but they may be mounted on the same traversing carriage 22. Further, the seam heat treatment device 21 and the water-cooling nozzle 23 may be directly mounted on the traveling vehicle 24 as long as the fluctuation of the seam portion is negligible.
【００２６】[0026]
【発明の効果】以上説明したように、本発明のシーム熱
処理設備を使用すれば、溶接部靱性仕様付の溶接管の生
産においても、ラインの停止によって発生する熱処理不
良部をオンラインにて１００％適正に再熱処理できるの
で、熱処理不良によるスクラップの発生を皆無にでき、
歩留りを著しく向上できる。As described above, if the seam heat treatment equipment of the present invention is used, even in the production of a welded pipe with a welded part toughness specification, the heat treatment defective part caused by the stop of the line can be reduced to 100% online. Since it can be reheated properly, it is possible to eliminate the occurrence of scrap due to poor heat treatment.
Yield can be significantly improved.
【図１】本発明の電縫管のシーム熱処理装置の一実施例
を示す概略正面図である。FIG. 1 is a schematic front view showing an embodiment of a seam heat treatment apparatus for an electric resistance welded pipe according to the present invention.
【図２】本発明の電縫管のシーム熱処理装置を用いてシ
ーム部を熱処理する方法を説明する図面である。FIG. 2 is a view illustrating a method of heat-treating a seam portion using the seam heat treatment apparatus for an electric resistance welded pipe according to the present invention.
【図３】従来の電縫管製造ラインにおける設備構成を示
した概略図である。FIG. 3 is a schematic diagram showing a facility configuration in a conventional ERW pipe production line.
【図４】従来のシーム熱処理装置を示す概略正面図であ
る。FIG. 4 is a schematic front view showing a conventional seam heat treatment apparatus.
【図５】特願平７−１２３６９５号で提案されたシーム
熱処理装置を示す概略正面図である。FIG. 5 is a schematic front view showing a seam heat treatment apparatus proposed in Japanese Patent Application No. 7-123695.
２１ シーム熱処理装置 ２２ 横行台車 ２３ 水冷ノズル ２４ 走行台車 DESCRIPTION OF SYMBOLS 21 Seam heat treatment apparatus 22 Traversing trolley 23 Water cooling nozzle 24 Traveling trolley
Claims (2)
側に配置され、管のシーム部を熱処理する設備であっ
て、シーム熱処理装置と、このシーム熱処理装置の直後
に配置された冷却装置を、電縫管製造ラインの流れ方向
に沿うて前後移動が可能なように構成したことを特徴と
する電縫管のシーム熱処理設備。An equipment for heat-treating a seam portion of a pipe, which is disposed downstream of a welding machine in an electric resistance welded pipe production line, comprising: a seam heat treatment device; and a cooling device disposed immediately after the seam heat treatment device. Seam heat treatment equipment for electric resistance welded pipes, which is configured to be able to move back and forth along the flow direction of the electric resistance welded pipe production line.
製造ラインの流れ方向と直角方向への移動が可能なよう
に構成したことを特徴とする請求項１記載の電縫管のシ
ーム熱処理設備。2. The seam heat treatment of an electric resistance welded pipe according to claim 1, wherein the seam heat treatment apparatus and the cooling apparatus are configured to be movable in a direction perpendicular to the flow direction of the ERW pipe production line. Facility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29644396A JPH10140251A (en) | 1996-11-08 | 1996-11-08 | Heat treatment equipment for seam in electric resistance welded tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29644396A JPH10140251A (en) | 1996-11-08 | 1996-11-08 | Heat treatment equipment for seam in electric resistance welded tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10140251A true JPH10140251A (en) | 1998-05-26 |
Family
ID=17833613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29644396A Pending JPH10140251A (en) | 1996-11-08 | 1996-11-08 | Heat treatment equipment for seam in electric resistance welded tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10140251A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006093006A1 (en) * | 2005-03-03 | 2006-09-08 | Sumitomo Metal Industries, Ltd. | Method of bending processing for metal material, bending processing apparatus, bending processing equipment line and bending-processed produced obtained thereby |
| JP2014065053A (en) * | 2012-09-26 | 2014-04-17 | Jfe Steel Corp | Heat treatment method of electric resistance welded pipe |
| US8919171B2 (en) | 2005-03-03 | 2014-12-30 | Nippon Steel & Sumitomo Metal Corporation | Method for three-dimensionally bending workpiece and bent product |
-
1996
- 1996-11-08 JP JP29644396A patent/JPH10140251A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006093006A1 (en) * | 2005-03-03 | 2006-09-08 | Sumitomo Metal Industries, Ltd. | Method of bending processing for metal material, bending processing apparatus, bending processing equipment line and bending-processed produced obtained thereby |
| EP2511020A3 (en) * | 2005-03-03 | 2012-11-14 | Sumitomo Metal Industries, Ltd. | Method for bending metal material, bending machine, bending-equipment line, and bent product |
| US8919171B2 (en) | 2005-03-03 | 2014-12-30 | Nippon Steel & Sumitomo Metal Corporation | Method for three-dimensionally bending workpiece and bent product |
| JP2014065053A (en) * | 2012-09-26 | 2014-04-17 | Jfe Steel Corp | Heat treatment method of electric resistance welded pipe |
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