JP2002346624A - Continuous hot rolling line - Google Patents
Continuous hot rolling lineInfo
- Publication number
- JP2002346624A JP2002346624A JP2002104722A JP2002104722A JP2002346624A JP 2002346624 A JP2002346624 A JP 2002346624A JP 2002104722 A JP2002104722 A JP 2002104722A JP 2002104722 A JP2002104722 A JP 2002104722A JP 2002346624 A JP2002346624 A JP 2002346624A
- Authority
- JP
- Japan
- Prior art keywords
- sheet bar
- hot rolling
- temperature
- finishing mill
- continuous hot
- 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
- Metal Rolling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粗圧延したシート
バーを接合して連続的に仕上圧延する連続熱間圧延設備
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous hot rolling facility for joining finish-rolled sheet bars and performing finish rolling continuously.
【０００２】[0002]
【従来の技術】図５は従来の装置の一例である、連続熱
間圧延設備の仕上圧延機ライン入側の概念を示す側面
図、図６はシートバーの仕上圧延機迄の温度降下を示す
線図である。2. Description of the Related Art FIG. 5 is a side view showing an example of a conventional apparatus, showing the concept of a finishing rolling mill line of a continuous hot rolling facility, and FIG. 6 shows a temperature drop of a sheet bar to a finishing rolling mill. FIG.
【０００３】図５に示すように、コイルボックス６０の
保温カバー６１内の入側クレードルロール６２ａ上で巻
取ったコイル５０をアーム６３によって出側クレードル
ロール６２ｂに移載して巻戻し、ピンチロール６９によ
って搬送する。そして、その先端クロップをクロップシ
ャー７０によって切断した後、シートバー５１をピンチ
ロール８９によって仕上圧延機９０に搬送し、この複数
段の仕上圧延機９０によって所要の板厚に順次熱間圧延
する。As shown in FIG. 5, a coil 50 wound on an entrance cradle roll 62a in a heat retaining cover 61 of a coil box 60 is transferred to an exit cradle roll 62b by an arm 63 and rewound, and is pinched. Transported by 69. Then, after the tip crop is cut by a crop shear 70, the sheet bar 51 is conveyed to a finishing mill 90 by a pinch roll 89, and is hot-rolled sequentially to a required thickness by the finishing mills 90 of the plurality of stages.
【０００４】このコイル５０の巻戻しが終了すると、こ
のシートバー５１の後端クロップをクロップシャー７０
によって切断し、後端部が接合装置８０の出側クランプ
８３に来ると接合装置８０をレール８７の最上流部（図
５中左方）から台車８２によってシートバー５１の走行
と同一速度で走行させながらこの出側クランプ８３で固
定する。When the rewinding of the coil 50 is completed, the rear end crop of the sheet bar 51 is removed by a crop shear 70.
When the rear end reaches the exit clamp 83 of the joining device 80, the joining device 80 is moved from the most upstream part (left side in FIG. 5) of the rail 87 by the bogie 82 at the same speed as the traveling of the seat bar 51. While being clamped.
【０００５】同時に、コイルボックス６０内の入側クレ
ードルロール６２ａ上で巻取って貯蔵していたコイル５
０をアーム６３によって出側クレードルロール６２ｂ上
に移載して巻戻し、この巻戻したシートバー５１の搬送
速度をピンチロール６９によって速くし、その先端クロ
ップをクロップシャー７０によって切断して前記走行す
る接合装置８０に追いつかせ、その先端部を接合装置８
０の入側クランプ８６で固定する。そして、この後続シ
ートバー５１の先端部と既に出側クランプ８３で固定し
ている先行シートバー５１の後端部とを接合装置８０の
加熱器８４によって所要の接合温度に加熱し、入側クラ
ンプ８６を接合装置８０のハウジング８１内で移動さ
せ、この後続シートバー５１の先端部を先行シートバー
５１の後端部に押圧して接合する。At the same time, the coil 5 wound and stored on the entrance cradle roll 62a in the coil box 60 is stored.
0 is transferred onto the output side cradle roll 62b by the arm 63 and rewound. To the joining device 80, and the leading end thereof is joined to the joining device 8
It is fixed with a zero input side clamp 86. The leading end of the succeeding sheet bar 51 and the trailing end of the preceding sheet bar 51 already fixed by the exit clamp 83 are heated to a required joining temperature by the heater 84 of the joining device 80, and the entrance clamp is heated. 86 is moved in the housing 81 of the joining device 80, and the leading end of the succeeding sheet bar 51 is pressed against the trailing end of the preceding sheet bar 51 for joining.
【０００６】このようにして、シートバー５１を接合装
置８０によって次々と接合し、仕上圧延機９０によって
連続して仕上圧延する。[0006] In this way, the sheet bars 51 are joined one after another by the joining device 80, and finish rolling is continuously performed by the finish rolling machine 90.
【０００７】[0007]
【発明が解決しようとする課題】ところが従来の連続熱
間圧延設備では、仕上圧延機９０の入側に長い距離を走
行する接合装置８０を配置したために長いスペースが必
要になる。However, in the conventional continuous hot rolling equipment, a long space is required because the joining device 80 that travels a long distance on the entry side of the finishing mill 90 is arranged.
【０００８】このため、特に板厚が薄いシートバー５１
や走行速度が遅いシートバー５１では、仕上圧延機９０
に搬送されたときには図６に示すように、シートバー５
１が熱間圧延に必要な温度（約１０５０℃）、即ち仕上
圧延機９０出側温度がＡｒ３変態点以上となるような温
度よりも低下する。図６の例では、シートバー５１の板
厚が１５ｍｍ、走行速度が３２ｍｐｍの場合、コイルボ
ックス６０で巻戻したときには１１００℃であったシー
トバー５１が、接合装置８０によって接合して仕上圧延
機９０に搬送する迄に約８６０℃まで降温し、熱間仕上
圧延に支障を来すことになる。For this reason, especially the sheet bar 51 having a small thickness is used.
In a sheet bar 51 having a low running speed, the finishing mill 90
As shown in FIG.
1 is lower than the temperature required for hot rolling (approximately 1050 ° C.), that is, the temperature at which the exit temperature of the finishing mill 90 is equal to or higher than the Ar3 transformation point. In the example of FIG. 6, when the sheet bar 51 has a thickness of 15 mm and a traveling speed of 32 mpm, the sheet bar 51, which was 1100 ° C. when unwound by the coil box 60, is joined by the joining device 80 to finish mill The temperature is lowered to about 860 ° C. before being conveyed to 90, which hinders hot finish rolling.
【０００９】そこで、本発明の目的は、常に熱間仕上圧
延に適した温度でシートバーを仕上圧延機に搬送するこ
とができる連続熱間圧延設備を提供することにある。Accordingly, an object of the present invention is to provide a continuous hot rolling equipment capable of always conveying a sheet bar to a finishing mill at a temperature suitable for hot finish rolling.
【００１０】[0010]
【課題を解決するための手段】本発明に係る連続熱間圧
延設備は、シートバー接合装置を仕上圧延機のライン入
側に配置し、このシートバー接合装置と仕上圧延機との
間にシートバーの全幅を仕上圧延機出側温度がＡｒ３変
態点以上となるような温度に加熱するシートバー加熱装
置を配置したことを特徴とする。In the continuous hot rolling equipment according to the present invention, a sheet bar joining apparatus is arranged on the line entry side of a finishing mill, and a sheet is provided between the sheet bar joining apparatus and the finishing mill. A sheet bar heating device for heating the entire width of the bar to a temperature at which the exit side temperature of the finishing mill is equal to or higher than the Ar3 transformation point is disposed.
【００１１】また、前記シートバー加熱装置は誘導加熱
式であると、迅速加熱や板厚変化に伴う加熱制御の面で
好適である。It is preferable that the sheet bar heating device is of an induction heating type in terms of rapid heating and heating control accompanying a change in plate thickness.
【００１２】また、ライン上流側から順に、コイルボッ
クスとクロップシャーとシートバー接合装置とシートバ
ー加熱装置と仕上圧延機とを配列すると、熱間圧延の連
続化が高効率で行えて好適である。It is preferable to arrange the coil box, the crop shear, the sheet bar joining device, the sheet bar heating device, and the finishing mill in order from the upstream side of the line so that continuous hot rolling can be performed with high efficiency. .
【００１３】［作用］前記構成によれば、先行シートバ
ーの後端部と後続シートバーの先端部とをシートバー接
合装置によって接合し、その温度が仕上圧延機入口で所
要の温度未満に降温していると、シートバー加熱装置に
よって熱間仕上圧延に必要な温度まで昇温し、仕上圧延
機によって所要の板厚に仕上圧延される。According to the above construction, the rear end portion of the preceding sheet bar and the front end portion of the succeeding sheet bar are joined by the sheet bar joining device, and the temperature falls below the required temperature at the entrance of the finishing mill. Then, the temperature is raised to a temperature required for hot finish rolling by a sheet bar heating device, and finish rolling is performed to a required thickness by a finish rolling mill.
【００１４】このようにして、次々と搬送される先行シ
ートバーの後端部と後続シートバーの先端部とをシート
バー接合装置によって接合し、シートバー加熱装置によ
って加熱し、熱間仕上圧延に最適な温度に調整しながら
仕上圧延機で所要の板厚のストリップに連続して熱間圧
延する。Thus, the rear end of the preceding sheet bar and the front end of the succeeding sheet bar, which are successively conveyed, are joined by the sheet bar joining device, heated by the sheet bar heating device, and subjected to hot finish rolling. Hot rolling is continuously performed on a strip having a required thickness by a finishing mill while adjusting to an optimum temperature.
【００１５】[0015]
【発明の実施の形態】以下、本発明に係る連続熱間圧延
設備を実施例により詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The continuous hot rolling equipment according to the present invention will be described below in detail with reference to examples.
【００１６】［実施例］図１は本発明の一実施例であ
る、連続熱間圧延設備の概念を示す側面図、図２は図１
の加熱装置を拡大した平面図、図３は図２のIII-III 線
断面図である。なお、従来の装置と同一の部材及び機器
には同一の符号を付し、重複する説明を省略する。FIG. 1 is a side view showing the concept of a continuous hot rolling facility according to an embodiment of the present invention, and FIG.
FIG. 3 is a sectional view taken along line III-III of FIG. Note that the same members and devices as those of the conventional apparatus are denoted by the same reference numerals, and redundant description will be omitted.
【００１７】図１において、接合装置８０と仕上圧延機
９０の入側ピンチロール８９との間には、誘導加熱コイ
ルを用いた加熱装置１０が配置されている。この加熱装
置１０は、図２及び図３に示すように、各々のテーブル
ローラ３０の間に配置され、走行するシートバー５１が
誘導加熱コイル内を通過するように装設されている。そ
の他の構成は従来の設備と同一である。In FIG. 1, a heating device 10 using an induction heating coil is disposed between a joining device 80 and an input pinch roll 89 of a finishing mill 90. As shown in FIGS. 2 and 3, the heating device 10 is disposed between the table rollers 30, and is mounted so that the traveling sheet bar 51 passes through the induction heating coil. Other configurations are the same as the conventional equipment.
【００１８】このように構成されるため、粗圧延してコ
イルボックス６０内の入側クレードルロール６２ａ上で
巻取ったコイル５０を出側クレードルロール６２ｂ上に
移載し、巻戻したシートバー５１をピンチロール６９に
よって搬送し、その先端クロップをクロップシャー７０
によって直線状に切断する。With this configuration, the coil bar 50 that has been roughly rolled and wound on the entrance cradle roll 62a in the coil box 60 is transferred onto the exit cradle roll 62b, and then unwound. Is transported by a pinch roll 69, and the tip crop is
And cut straight.
【００１９】このシートバー５１が熱間圧延に必要な温
度（約１０５０℃）よりも低下していると、加熱装置１
０によって加熱してその温度を調整し、ピンチロール８
９によって仕上圧延機９０に搬送してこの複数段の仕上
圧延機９０によって所要の板厚に順次熱間圧延する。If the temperature of the sheet bar 51 is lower than the temperature required for hot rolling (about 1050 ° C.), the heating device 1
0 to adjust the temperature,
In step 9, the sheet is conveyed to a finishing mill 90, and hot-rolled to a required thickness sequentially by the finishing mills 90 having a plurality of stages.
【００２０】図示例では、加熱装置１０とピンチロール
８９との間にエッジ加熱装置４０を設けて、中央部分よ
り早く冷えるシートバー５１のエッジ部分を加熱するよ
うになっている。In the illustrated example, an edge heating device 40 is provided between the heating device 10 and the pinch roll 89 so as to heat the edge portion of the sheet bar 51 which cools faster than the center portion.
【００２１】このコイル５０の巻戻しが終了すると、こ
のシートバー５１の後端クロップをクロップシャー７０
によって切断し、この後端部が接合装置８０の出側クラ
ンプ８３に来ると接合装置８０をレール８７の最上流部
（図１中左方）から台車８２によってシートバー５１の
走行と同一速度で走行させながら出側クランプ８３で固
定する。When the rewinding of the coil 50 is completed, the rear end crop of the sheet bar 51 is removed by a crop shear 70.
When the rear end reaches the exit clamp 83 of the joining device 80, the joining device 80 is moved from the most upstream portion (left side in FIG. 1) of the rail 87 by the bogie 82 at the same speed as the traveling of the seat bar 51. While running, it is fixed with the output side clamp 83.
【００２２】同時に、コイルボックス６０内の入側クレ
ードルロール６２ａ上で巻取って貯蔵していたコイル５
０を出側クレードルロール６２ｂ上に移載して巻戻しを
開始し、このシートバー５１をピンチロール６９によっ
て搬送速度を速くし、その先端クロップをクロップシャ
ー７０によって切断して走行する接合装置８０に追いつ
かせ、その先端部を接合装置８０の入側クランプ８６で
固定する。At the same time, the coil 5 wound and stored on the entrance cradle roll 62a in the coil box 60 is stored.
0 is transferred onto the output side cradle roll 62b to start rewinding. The sheet bar 51 is conveyed at a high speed by the pinch roll 69, and the leading end crop is cut by the crop shear 70 and the joining device 80 travels. And the front end thereof is fixed by the entrance clamp 86 of the joining device 80.
【００２３】そして、この後続シートバー５１の先端部
と既に固定している先行シートバー５１の後端部とを所
要の接合温度に加熱し、入側クランプ８６をハウジング
８１内で移動させて後続シートバー５１の先端切断部を
先行シートバー５１の後端切断部に押圧して接合する。Then, the leading end of the succeeding sheet bar 51 and the rear end of the preceding sheet bar 51 which has already been fixed are heated to a required joining temperature, and the entrance clamp 86 is moved in the housing 81 so as to be moved. The leading end cut portion of the sheet bar 51 is pressed and joined to the trailing end cut portion of the preceding sheet bar 51.
【００２４】そして、このシートバー５１が熱間圧延に
必要な温度（約１０５０℃）よりも低下していると、加
熱装置１０によって加熱してその温度を調整し、ピンチ
ロール８９によって仕上圧延機９０に搬送してこの複数
段の仕上圧延機９０によって所要の板厚に順次熱間圧延
する。When the temperature of the sheet bar 51 is lower than the temperature required for hot rolling (about 1050 ° C.), the sheet bar 51 is heated by the heating device 10 to adjust the temperature. The rolls are conveyed to a feed roll 90 and hot-rolled by the finish rolling mills 90 of a plurality of stages to a required thickness in order.
【００２５】図４の例では、シートバー５１の板厚が１
５ｍｍ、走行速度が３２ｍｐｍの場合、コイルボックス
６０で巻戻したときには１１００℃であったシートバー
５１が、加熱装置１０の入口では約８６０℃迄降温する
が、加熱装置１０で加熱することによって１１００℃迄
上昇し、仕上圧延機９０でのロール噛込み時には熱間圧
延に最適な１０５９℃に下降している。In the example of FIG. 4, the thickness of the sheet bar 51 is 1
When the running speed is 5 mm and the traveling speed is 32 mpm, the sheet bar 51, which was 1100 ° C. when unwound by the coil box 60, drops to about 860 ° C. at the entrance of the heating device 10. ° C, and drops to 1059 ° C, which is optimal for hot rolling, when the roll is engaged in the finishing mill 90.
【００２６】このようにして、シートバー５１を接合装
置８０によって次々と誘導加熱により接合し、仕上圧延
機９０によって連続して仕上圧延する。In this manner, the sheet bars 51 are successively joined by the induction heating by the joining apparatus 80, and are finish-rolled continuously by the finish rolling machine 90.
【００２７】尚、本発明は上記実施例には限定されず、
本発明の要旨を逸脱しない範囲で各種変更が可能である
ことは言うまでもない。The present invention is not limited to the above embodiment,
It goes without saying that various changes can be made without departing from the spirit of the present invention.
【００２８】[0028]
【発明の効果】本発明では、シートバー接合装置を仕上
圧延機のライン入側に配置し、このシートバー接合装置
と仕上圧延機との間にシートバーの全幅を仕上圧延機出
側温度がＡｒ３変態点以上となるような温度に加熱する
シートバー加熱装置を配置したことにより、熱間圧延の
連続化のために走行距離が長いシートバー接合装置を配
置して仕上圧延機までの距離が長くなったにもかかわら
ず、どのように板厚が薄いシートバーやその走行速度が
遅くても、接合したシートバーをシートバー加熱装置に
よって熱間仕上圧延に必要な温度に調整することができ
る。従って、このシートバーを常時安定して連続熱間仕
上圧延を行うことが可能になり、高品質のストリップを
得ることができる。According to the present invention, the sheet bar joining apparatus is arranged on the line entrance side of the finishing mill, and the entire width of the sheet bar is set between the sheet bar joining apparatus and the finishing mill so that the temperature on the exit side of the finishing mill is reduced. By arranging a sheet bar heating device for heating to a temperature not lower than the Ar3 transformation point, a sheet bar joining device having a long running distance is arranged for continuous hot rolling, and a distance to a finish rolling mill is reduced. Regardless of how thin the sheet bar is or its running speed is slow, the joined sheet bar can be adjusted to the temperature required for hot finish rolling by the sheet bar heating device despite its length . Accordingly, continuous hot finish rolling of the sheet bar can be always performed stably, and a high-quality strip can be obtained.
【図１】本発明の一実施例である、連続熱間圧延設備の
概念を示す側面図である。FIG. 1 is a side view showing the concept of a continuous hot rolling facility as one embodiment of the present invention.
【図２】図１の加熱装置を拡大した平面図である。FIG. 2 is an enlarged plan view of the heating device of FIG.
【図３】図２のIII-III 線断面図である。FIG. 3 is a sectional view taken along line III-III of FIG. 2;
【図４】シートバーの仕上圧延機迄の温度降下及び加熱
装置による温度上昇を示す線図である。FIG. 4 is a diagram showing a temperature drop of a sheet bar to a finishing mill and a temperature rise by a heating device.
【図５】従来の一般的な連続熱間圧延設備の概念を示す
側面図である。FIG. 5 is a side view showing the concept of a conventional general continuous hot rolling facility.
【図６】シートバーの仕上圧延機迄の温度降下を示す線
図である。FIG. 6 is a diagram showing a temperature drop of a sheet bar to a finishing mill.
１０ 加熱装置 ４０ エッジ加熱装置 ５０ コイル ５１ シートバー ６０ コイルボックス ７０ クロップシャー ８０ 接合装置 ９０ 仕上圧延機 DESCRIPTION OF SYMBOLS 10 Heating apparatus 40 Edge heating apparatus 50 Coil 51 Sheet bar 60 Coil box 70 Crop shear 80 Joining apparatus 90 Finishing mill
Claims (3)
ン入側に配置し、このシートバー接合装置と仕上圧延機
との間にシートバーの全幅を仕上圧延機出側温度がＡｒ
３変態点以上となるような温度に加熱するシートバー加
熱装置を配置して成ることを特徴とする連続熱間圧延設
備。1. A sheet bar joining apparatus is arranged on the line entry side of a finishing mill, and the entire width of the sheet bar is set between the sheet bar joining apparatus and the finishing mill so that the exit temperature of the finishing mill is Ar.
A continuous hot rolling equipment comprising a sheet bar heating device for heating the sheet bar to a temperature at which the temperature is at least three transformation points.
あることを特徴とする請求項１記載の連続熱間圧延設
備。2. The continuous hot rolling equipment according to claim 1, wherein the sheet bar heating device is an induction heating type.
とクロップシャーとシートバー接合装置とシートバー加
熱装置と仕上圧延機とを配列したことを特徴とする請求
項１又は２のいずれかに記載の連続熱間圧延設備。3. The method according to claim 1, wherein a coil box, a crop shear, a sheet bar joining device, a sheet bar heating device, and a finishing mill are arranged in order from the line upstream. Continuous hot rolling equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002104722A JP2002346624A (en) | 2002-04-08 | 2002-04-08 | Continuous hot rolling line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002104722A JP2002346624A (en) | 2002-04-08 | 2002-04-08 | Continuous hot rolling line |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13797796A Division JP3368573B2 (en) | 1996-05-31 | 1996-05-31 | Continuous hot rolling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002346624A true JP2002346624A (en) | 2002-12-03 |
Family
ID=19193773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002104722A Pending JP2002346624A (en) | 2002-04-08 | 2002-04-08 | Continuous hot rolling line |
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| Country | Link |
|---|---|
| JP (1) | JP2002346624A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357043C (en) * | 2002-12-14 | 2007-12-26 | Sms迪马格股份公司 | Method and installation for hot-rolling strips using a steckel rolling frame |
| JP2010538836A (en) * | 2007-09-13 | 2010-12-16 | エス・エム・エス・ジーマーク・アクチエンゲゼルシャフト | Compact flexible continuous strip production equipment for continuous, semi-continuous and batch operation |
-
2002
- 2002-04-08 JP JP2002104722A patent/JP2002346624A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357043C (en) * | 2002-12-14 | 2007-12-26 | Sms迪马格股份公司 | Method and installation for hot-rolling strips using a steckel rolling frame |
| JP2010538836A (en) * | 2007-09-13 | 2010-12-16 | エス・エム・エス・ジーマーク・アクチエンゲゼルシャフト | Compact flexible continuous strip production equipment for continuous, semi-continuous and batch operation |
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