WO2013046347A1 - Hot rolling equipment - Google Patents

Hot rolling equipment Download PDF

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WO2013046347A1
WO2013046347A1 PCT/JP2011/072143 JP2011072143W WO2013046347A1 WO 2013046347 A1 WO2013046347 A1 WO 2013046347A1 JP 2011072143 W JP2011072143 W JP 2011072143W WO 2013046347 A1 WO2013046347 A1 WO 2013046347A1
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rolling
line
mill
rolled
upstream
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PCT/JP2011/072143
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French (fr)
Japanese (ja)
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亮平 木ノ瀬
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三菱日立製鉄機械株式会社
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Priority to PCT/JP2011/072143 priority Critical patent/WO2013046347A1/en
Publication of WO2013046347A1 publication Critical patent/WO2013046347A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/004—Transverse moving

Abstract

In order to provide a hot rolling facility with which an improvement in the manufacturability and the quality of a thin plate material can be achieved with little facility investment, this hot rolling facility is equipped with a first rolling line (A), which directly performs finishing rolling with multiple rolling mills (12a, 12b) on a thin slab (Wa) cast with a continuous-casting machine (10), and a second rolling line (B), which, with a roughing mill (21), reversibly rolls a thick slab (Wb) heated in a batch-type heating furnace (20), with an intermediate material (Wc) that has been rolled with the second rolling line (B) being transported to the first rolling line (A) and undergoing finishing rolling at the first rolling line (A) to produce a final product (S). The multiple rolling mills (12a, 12b) respectively comprise an upstream rolling mill (12a) and a downstream rolling mill (12b), each of which is formed with at least one rolling mill stand. A crop shear device (30) that cuts and evens up the front and rear ends of the slabs (Wa, Wc) rolled with the upstream rolling mill (12a) is installed on an intermediate table between these rolling mills (12a, 12b).

Description

熱間圧延設備Hot rolling equipment
　本発明は、少ない設備投資で薄板材の生産性と品質の向上が図れる熱間圧延設備に関する。 The present invention relates to a hot rolling facility capable of improving the productivity and quality of a thin plate material with a small capital investment.
　従来、連続鋳造機で鋳造された薄スラブを直接的に複数台の圧延機で仕上げ圧延する第１の圧延ラインと前記第１の圧延ラインと平行に配置されてバッチ式加熱炉で加熱された厚スラブを粗圧延機で圧延する第２の圧延ラインとを備え、前記第２の圧延ラインで圧延した中間素材を第１の圧延ラインに移送して当該第１の圧延ラインで最終製品まで仕上げ圧延する熱間圧延設備が、例えば特許文献１で開示されている。 Conventionally, a thin slab cast by a continuous casting machine is directly rolled by a plurality of rolling mills, and the first rolling line is arranged in parallel with the first rolling line and heated by a batch heating furnace. A second rolling line for rolling the thick slab with a roughing mill, and transferring the intermediate material rolled in the second rolling line to the first rolling line to finish the final product in the first rolling line. For example, Patent Document 1 discloses a hot rolling facility for rolling.
　これによれば、第２の圧延ラインから第１の圧延ラインへ種々のスラブ厚のスラブを移送することによって、第１の圧延ラインにおける後置部分（均熱炉、複数台の圧延機、コイラ等）の最大限の活用を達成でき、少ない設備投資で薄板材の生産性の向上が図れる。また、第２の圧延ラインでは、厚スラブを粗圧延機で、第１の圧延ラインでの仕上げ圧延が可能なスラブ厚まで圧延することになるので、需要に応じた高品質の薄板材が得られる。 According to this, by transferring slabs having various slab thicknesses from the second rolling line to the first rolling line, the rear part (soaking furnace, multiple rolling mills, coiler in the first rolling line) Etc.) and can improve the productivity of sheet metal with little capital investment. In the second rolling line, a thick slab is rolled to a slab thickness that can be finished and rolled in the first rolling line with a roughing mill, so that a high-quality sheet material according to demand can be obtained. It is done.
特許第４００１６１７号公報Japanese Patent No. 4001617
　ところが、特許文献１に開示された熱間圧延設備にあっては、第２の圧延ラインで厚スラブが粗圧延機で可逆圧延されると、中間素材の先後端温度が低下すると共に、中間素材の先後端にフィッシュテールやタング等の形状不良を生じ、第１の圧延ラインでの最終圧延や巻取りでの安定性を欠き、品質を損なうという問題点もあった。 However, in the hot rolling facility disclosed in Patent Document 1, when the thick slab is reversibly rolled by a roughing mill in the second rolling line, the front and rear end temperatures of the intermediate material are lowered, and the intermediate material There was also a problem that shape defects such as fish tails and tongues were produced at the front and rear ends of the steel sheet, and the stability at the final rolling and winding in the first rolling line was lacking and the quality was impaired.
　また、第２の圧延ラインでの厚スラブの圧延は、バッチ式加熱炉で加熱された材料を圧延するため、出炉から粗圧延までの時間が材料の長手方向位置により異なり、第１の圧延ラインに移送される中間素材の長手方向温度にも差異が生じることから、第１の圧延ラインでの圧延の安定性や最終製品品質を損なうという問題点があった。 The rolling of the thick slab in the second rolling line is performed by rolling the material heated in the batch-type heating furnace, so the time from the exiting furnace to the rough rolling varies depending on the position in the longitudinal direction of the material, and the first rolling line There is also a problem in that the stability of the rolling in the first rolling line and the quality of the final product are impaired because the difference occurs in the temperature in the longitudinal direction of the intermediate material transferred to the first rolling line.
　本発明は、このような実情に鑑み提案されたもので、その目的は、少ない設備投資で薄板材の生産性と品質の向上が図れる熱間圧延設備を提供することにある。 The present invention has been proposed in view of such circumstances, and an object thereof is to provide a hot rolling facility capable of improving the productivity and quality of a thin plate material with a small capital investment.
　上記の課題を解決するための本発明に係る熱間圧延設備は、
　連続鋳造機で鋳造されたスラブを直接的に複数台の圧延機で仕上げ圧延する第１の圧延ラインと前記第１の圧延ラインと平行に配置されてバッチ式加熱炉で加熱されたスラブを粗圧延機で圧延する第２の圧延ラインとを備え、前記第２の圧延ラインで圧延した中間素材を第１の圧延ラインに移送して当該第１の圧延ラインで最終製品まで仕上げ圧延する熱間圧延設備において、
　前記第１の圧延ラインにおける複数台の圧延機は、それぞれ少なくとも１スタンドの圧延機で構成される上流側圧延機と下流側圧延機とからなり、これらの上流側圧延機と下流側圧延機との間の中間テーブルに、前記上流側圧延機で圧延されたスラブの先後端を切り揃えるクロップせん断装置を設置したことを特徴とする。 The hot rolling equipment according to the present invention for solving the above problems is as follows.
A slab cast by a continuous casting machine is directly finished and rolled by a plurality of rolling mills, and a slab heated in a batch furnace is arranged in parallel with the first rolling line and heated by a batch heating furnace. A second rolling line that is rolled by a rolling mill, and the intermediate material rolled in the second rolling line is transferred to the first rolling line and hot rolled to finish rolling to the final product in the first rolling line. In rolling equipment,
The plurality of rolling mills in the first rolling line include an upstream rolling mill and a downstream rolling mill each composed of at least one stand rolling mill, and these upstream rolling mill and downstream rolling mill, A crop shearing device that cuts and aligns the front and rear ends of the slab rolled by the upstream rolling mill is installed on the intermediate table.
　また、
　前記上流側圧延機と下流側圧延機との間の中間テーブルに、前記クロップせん断装置の圧延ライン上流側に位置して前記上流側圧延機で圧延されたスラブの温度を調節する材料温度調節装置を設置したことを特徴とする。 Also,
A material temperature adjusting device for adjusting the temperature of the slab rolled by the upstream rolling mill located on the upstream side of the rolling line of the crop shearing device on the intermediate table between the upstream rolling mill and the downstream rolling mill It is characterized by having installed.
　本発明に係る熱間圧延設備によれば、第１の圧延ラインにおける連続鋳造機後方の後置部分の最大限の活用を達成でき、少ない設備投資で薄板材の生産性の向上が図れると共に、第２の圧延ラインでは厚スラブを粗圧延機で第１の圧延ラインでの仕上げ圧延が可能なスラブ厚まで圧延することができるので需要に応じた高品質の薄板材が得られる一方、第１の圧延ラインに、上流側圧延機で圧延されたスラブの先後端を切り揃えるクロップせん断装置を設置したことにより、第２の圧延ラインにクロップせん断装置が無い場合でも、中間素材を第１の圧延ラインに移送後、その先後端形状不良、温度低下部分を切断することができ、第１の圧延ラインでの最終圧延や巻取りでの安定性が確保され、品質や生産性を損なうことを防止できる。 According to the hot rolling facility according to the present invention, the maximum utilization of the rear part of the continuous casting machine in the first rolling line can be achieved, and the productivity of the thin plate material can be improved with less equipment investment. In the second rolling line, a thick slab can be rolled to a slab thickness that can be finished and rolled in the first rolling line with a roughing mill, so that a high-quality sheet material according to demand can be obtained. By installing a crop shearing device that cuts the leading and trailing ends of the slab rolled by the upstream rolling mill in the rolling line, the intermediate material is first rolled even when the second rolling line does not have a crop shearing device. After transferring to the line, the leading and trailing edge shape defects and the temperature drop part can be cut, and the stability in the final rolling and winding in the first rolling line is secured, preventing the loss of quality and productivity. it can.
　また、前記上流側圧延機で圧延されたスラブの温度を調節する材料温度調節装置を設置したので、第２の圧延ラインで生産される中間素材の長手方向の温度差を、第１の圧延ラインにおいて材料温度調節装置でより均一な温度での圧延を実施することができ、第１の圧延ラインでの最終圧延の安定性が確保され、品質や生産性を損なうことを防止できる。 Moreover, since the material temperature control apparatus which adjusts the temperature of the slab rolled with the said upstream rolling mill was installed, the temperature difference of the longitudinal direction of the intermediate raw material produced with a 2nd rolling line is made into the 1st rolling line. Thus, rolling at a more uniform temperature can be performed with the material temperature control device, the stability of the final rolling in the first rolling line can be ensured, and the quality and productivity can be prevented from being impaired.
本発明の実施例１を示す熱間圧延設備の概略構成側面図である。It is a schematic structure side view of the hot rolling equipment showing Example 1 of the present invention. 本発明の実施例２を示す熱間圧延設備の概略構成側面図である。It is a schematic structure side view of the hot rolling equipment showing Example 2 of the present invention.
　以下、本発明に係る熱間圧延設備を実施例により図面を用いて詳細に説明する。 Hereinafter, the hot rolling equipment according to the present invention will be described in detail with reference to the accompanying drawings.
　図１は本発明の実施例１を示す熱間圧延設備の概略構成側面図である。 FIG. 1 is a schematic side view of a hot rolling facility showing Example 1 of the present invention.
　図１に示すように、溶鋼が図示しないレードルからタンディッシュに注がれ、タンディッシュから連続鋳造機１０へと注がれる。この連続鋳造機１０内で溶鋼が凝固し高温の薄スラブＷａ（例えば７０～１００ｍｍ程度）となる。この薄スラブＷａは均熱炉（連鋳機出側炉）１１へ進み、均熱炉１１では薄スラブＷａの温度降下が抑制され、また、薄スラブＷａ内の温度分布の均一化が図られる。また、連続鋳造機１０の出側にはスラブが所望の長さになったところで切断する図示しないシヤーが設けられる。 As shown in FIG. 1, molten steel is poured from a ladle (not shown) into a tundish and from the tundish to a continuous casting machine 10. The molten steel is solidified in the continuous casting machine 10 and becomes a high-temperature thin slab Wa (for example, about 70 to 100 mm). The thin slab Wa proceeds to a soaking furnace (continuous casting machine outlet furnace) 11, where the temperature drop of the thin slab Wa is suppressed, and the temperature distribution in the thin slab Wa is made uniform. . Further, on the exit side of the continuous casting machine 10, a shear (not shown) for cutting when the slab reaches a desired length is provided.
　前記均熱炉１１を出た薄スラブＷａは、１以上のスタンド（図示例では２スタンド）からなる上流側圧延機１２ａと１以上のスタンド（図示例では５スタンド）からなる下流側圧延機１２ｂとに分割構成された複数台の圧延機で仕上げ圧延されて、所望の厚さのストリップＳ（例えば１ｍｍ～１０ｍｍ程度）に圧延された後、図示しない冷却装置を経て複数台（図示例では２台）配置されたダウンコイラ１３で交互に巻き取られる。 The thin slab Wa exiting the soaking furnace 11 is composed of an upstream rolling mill 12a composed of one or more stands (2 stands in the illustrated example) and a downstream rolling mill 12b composed of one or more stands (5 stands in the illustrated example). Are rolled into a strip S having a desired thickness (for example, about 1 mm to 10 mm) and then passed through a cooling device (not shown) (2 in the example shown). It is wound up alternately by the arranged downcoiler 13.
　また、前記上流側圧延機１２ａの入側に、圧延ラインの上流側から順にスラブ（薄スラブＷａ又は中間素材Ｗｃ）表面の酸化スケールを除去するスケール除去装置３１Ａと幅変更手段としての縦ロール３２が設置されると共に、下流側圧延機１２ｂの入側に、前記上流側圧延機１２ａで粗圧延されたスラブ（薄スラブＷａ又は中間素材Ｗｃ）の表面の酸化スケールを除去するスケール除去装置３１Ｂが設置される。 Further, on the entry side of the upstream rolling mill 12a, a scale removing device 31A for removing the oxide scale on the surface of the slab (thin slab Wa or intermediate material Wc) in order from the upstream side of the rolling line and a vertical roll 32 as a width changing means. And a scale removing device 31B for removing oxide scale on the surface of the slab (thin slab Wa or intermediate material Wc) roughly rolled by the upstream rolling mill 12a on the entry side of the downstream rolling mill 12b. Installed.
　そして、本実施例では、前記上流側圧延機１２ａと下流側圧延機１２ｂとの間の中間テーブルに、前記上流側圧延機１２ａで粗圧延されたスラブ（薄スラブＷａ又は中間素材Ｗｃ）の先後端を切り揃えるクロップせん断装置３０が設置される。 In this embodiment, the front and rear of the slab (thin slab Wa or intermediate material Wc) roughly rolled by the upstream rolling mill 12a on the intermediate table between the upstream rolling mill 12a and the downstream rolling mill 12b. A crop shearing device 30 for trimming the ends is installed.
　前記連続鋳造機１０，均熱炉１１，上流側圧延機１２ａ，下流側圧延機１２ｂ及びダウンコイラ１３等で第１の圧延ラインＡが構成される。尚、前記複数台のダウンコイラ１３に代えてカローゼルコイラを用いても良い。 The first rolling line A is composed of the continuous casting machine 10, the soaking furnace 11, the upstream rolling mill 12a, the downstream rolling mill 12b, the downcoiler 13, and the like. A carousel coiler may be used instead of the plurality of down coilers 13.
　また、前記第１の圧延ラインＡと平行に第２の圧延ラインＢが配置される。この第２の圧延ラインＢは、ウォーキングビームファーネス等のバッチ式加熱炉２０で加熱された厚スラブＷｂ（例えば２００～２５０ｍｍ程度）を粗圧延機２１で所望の厚さ（例えば前記第１の圧延ラインＡにおける薄スラブＷａの厚さと同程度の厚さ）まで可逆式に粗圧延するものである。 Further, a second rolling line B is arranged in parallel with the first rolling line A. In the second rolling line B, a thick slab Wb (for example, about 200 to 250 mm) heated in a batch-type heating furnace 20 such as a walking beam furnace is applied to a desired thickness (for example, the first rolling) by a roughing mill 21. Rough rolling is carried out reversibly up to a thickness equivalent to the thickness of the thin slab Wa in the line A).
　この第２の圧延ラインＢで圧延された中間素材（スラブ）Ｗｃが搬送炉（トランスファー）２２で第１の圧延ラインＡの均熱炉１１に移送（横送り）されて当該第１の圧延ラインＡの上流側圧延機１２ａと下流側圧延機１２ｂで最終製品であるストリップＳまで仕上げ圧延されるようになっている。尚、前記搬送炉２２は加熱炉の一部でもある。また、本搬送炉２２は横送り以外の、例えば回転式等の形態でも可能である。さらに、前記粗圧延機２１の圧延ライン上流側近傍には厚スラブＷｂの幅調整を行うエッジャーミル２３が設置される。 The intermediate material (slab) Wc rolled in the second rolling line B is transferred (transversely fed) to the soaking furnace 11 of the first rolling line A by the transfer furnace (transfer) 22 and the first rolling line. The A-side upstream rolling mill 12a and the downstream rolling mill 12b are finish-rolled to the strip S, which is the final product. The transfer furnace 22 is also a part of the heating furnace. Further, the transfer furnace 22 may be in a form other than the lateral feed, for example, a rotary type. Further, an edger mill 23 for adjusting the width of the thick slab Wb is installed in the vicinity of the upstream side of the rolling line of the roughing mill 21.
　このように構成されるため、第２の圧延ラインＢで圧延した中間素材Ｗｃを第１の圧延ラインＡに移送して当該第１の圧延ラインＢの上流側圧延機１２ａと下流側圧延機１２ｂで最終製品であるストリップＳまで仕上げ圧延するので、第１の圧延ラインＡにおける連続鋳造機１０後方の後置部分（均熱炉１１，上流側圧延機１２ａと下流側圧延機１２ｂ及びダウンコイラ１３等）の最大限の活用を達成でき、少ない設備投資でストリップＳ（薄板材）の生産性の向上が図れる。 Since it comprises in this way, the intermediate raw material Wc rolled by the 2nd rolling line B is transferred to the 1st rolling line A, the upstream rolling mill 12a and the downstream rolling mill 12b of the said 1st rolling line B In the first rolling line A, the rear part of the continuous casting machine 10 is placed behind (the soaking furnace 11, the upstream rolling mill 12a, the downstream rolling mill 12b, the downcoiler 13, etc.). ) And the productivity of the strip S (thin plate material) can be improved with a small capital investment.
　また、第２の圧延ラインＢでは厚スラブＷｂを粗圧延機２１で第１の圧延ラインＢでの仕上げ圧延が可能なスラブ厚（例えば７０～１００ｍｍ程度）まで圧延することができるので、例えば連続鋳造機１０では鋳造困難な鋼種の厚スラブを外部から調達してくる等により、需要に応じた高品質のストリップＳ（薄板材）が得られる。 Further, in the second rolling line B, the thick slab Wb can be rolled to a slab thickness (for example, about 70 to 100 mm) that can be finished and rolled in the first rolling line B by the rough rolling mill 21. The casting machine 10 can obtain a high-quality strip S (thin plate material) according to demand, for example, by procuring a thick slab of a steel type that is difficult to cast from the outside.
　また、第１の圧延ラインＡの上流側圧延機１２ａと下流側圧延機１２ｂとの間の中間テーブルに、上流側圧延機１２ａで圧延されたスラブ（薄スラブＷａ又は中間素材Ｗｃ）の先後端を切り揃えるクロップせん断装置３０を設置したので、第２の圧延ラインＢで圧延された中間素材Ｗｃの先後端形状不良（フィッシュテールやタング等）や先後端の温度低下部分を、第１の圧延ラインＡへの移送後、更に上流側圧延機１２ａでの圧延後に切断して平面形状を矩形にすることができ、これによって、第１の圧延ラインＡでの下流側圧延機１２ｂによる最終圧延や複数台のダウンコイラ１３による巻取りでの安定性が確保され、品質や生産性を損なうことを防止できる。 Moreover, the front-rear end of the slab (thin slab Wa or intermediate material Wc) rolled by the upstream rolling mill 12a on the intermediate table between the upstream rolling mill 12a and the downstream rolling mill 12b of the first rolling line A Since the crop shearing device 30 is installed, the intermediate material Wc rolled in the second rolling line B is subjected to the first rolling of the leading and trailing end shape defects (fishtail, tongue, etc.) and the temperature decreasing part of the leading and trailing ends. After the transfer to the line A, it can be cut after the rolling in the upstream rolling mill 12a to make the planar shape rectangular, whereby the final rolling by the downstream rolling mill 12b in the first rolling line A Stability in winding by a plurality of downcoilers 13 is ensured, and it is possible to prevent the quality and productivity from being impaired.
　図２は本発明の実施例２を示す熱間圧延設備の概略構成側面図である。 FIG. 2 is a schematic side view of the hot rolling equipment showing Example 2 of the present invention.
　この実施例は、図２に示すように、実施例１における第１の圧延ラインＡの上流側圧延機１２ａと下流側圧延機１２ｂとの間の中間テーブルに、クロップせん断装置３０の圧延ライン上流側に位置して、上流側圧延機１２ａで圧延されたスラブ（薄スラブＷａ又は中間素材Ｗｃ）の温度を冷却水又は加熱装置等で調節する材料温度調節装置４０を設置した例である。その他の構成は、実施例１と同様なので、図１と同一部材には同一符号を付して重複する説明は省略する。 In this embodiment, as shown in FIG. 2, the upstream side of the rolling line of the crop shear device 30 is arranged on the intermediate table between the upstream rolling mill 12 a and the downstream rolling mill 12 b of the first rolling line A in the first embodiment. This is an example in which a material temperature adjusting device 40 that is located on the side and adjusts the temperature of the slab (thin slab Wa or intermediate material Wc) rolled by the upstream rolling mill 12a with cooling water or a heating device or the like is installed. Since other configurations are the same as those of the first embodiment, the same members as those in FIG.
　この実施例によれば、実施例１と同様の作用効果に加えて、第２の圧延ラインＢで生産される中間素材Ｗｃの長手方向の温度差を、第１の圧延ラインＡにおいて材料温度調節装置４０でより均一な温度での圧延を実施することができ、第１の圧延ラインＡでの最終圧延の安定性が確保され、品質や生産性を損なうことを防止できるという利点が得られる。 According to this embodiment, in addition to the same effects as in the first embodiment, the temperature difference in the longitudinal direction of the intermediate material Wc produced in the second rolling line B is adjusted in the material temperature in the first rolling line A. Rolling at a more uniform temperature can be performed with the apparatus 40, the stability of the final rolling in the first rolling line A is ensured, and the advantage that the quality and productivity can be prevented from being lost is obtained.
　即ち、第２の圧延ラインＢでの中間素材Ｗｃの圧延は、バッチ式加熱炉２０で加熱された厚スラブＷｂを圧延するため、出炉から粗圧延機２１での粗圧延までの時間が厚スラブＷｂの長手方向位置により異なり、第１の圧延ラインＡに移送される中間素材Ｗｃの長手方向温度にも差異が生じることから、第１の圧延ラインＡでの圧延の安定性や最終製品品質を損なうという問題点があったが、それが解消されるのである。因みに、第１の圧延ラインＡで鋳造された薄スラブＷａは均熱炉１１で加熱されるため、長手方向の圧延時温度はほぼ均一である。 That is, the rolling of the intermediate material Wc in the second rolling line B rolls the thick slab Wb heated in the batch-type heating furnace 20, so that the time from the furnace to the rough rolling in the rough rolling mill 21 is thick slab. Depending on the position in the longitudinal direction of Wb and the difference in the longitudinal temperature of the intermediate material Wc transferred to the first rolling line A, the rolling stability and final product quality in the first rolling line A can be improved. There was a problem of losing, but it was solved. Incidentally, since the thin slab Wa cast in the first rolling line A is heated in the soaking furnace 11, the temperature during rolling in the longitudinal direction is substantially uniform.
　本発明に係る熱間圧延設備は、連続鋳造機後方の後置部分（均熱炉１１，上流側圧延機１２ａと下流側圧延機１２ｂ及びダウンコイラ１３等）の最大限の活用を達成できるので、薄板材の製造設備に用いて好適である。 Since the hot rolling facility according to the present invention can achieve the maximum utilization of the rear part of the continuous casting machine (soaking furnace 11, upstream rolling mill 12a, downstream rolling mill 12b, downcoiler 13, etc.), It is suitable for use in manufacturing equipment for thin plate materials.
　１０　連続鋳造機
　１１　均熱炉（連鋳機出側炉）
　１２　多段の圧延機（列）
　１２ａ　上流側の圧延機
　１２ｂ　下流側の圧延機
　１３　ダウンコイラ
　２０　バッチ式加熱炉
　２１　粗圧延機
　２２　搬送炉（トランスファー）
　２３　エッジャーミル
　３０　クロップせん断装置
　３１Ａ，３１Ｂ　スケール除去装置
　３２　縦ロール
　４０　材料温度調節装置
　Ａ　第１の圧延ライン
　Ｂ　第２の圧延ライン
　Ｗａ　薄スラブ
　Ｗｂ　厚スラブ
　Ｗｃ　中間素材
　Ｓ　ストリップ 10 Continuous casting machine 11 Soaking furnace (continuous casting machine outlet furnace)
12 Multi-stage rolling mill (row)
12a Upstream rolling mill 12b Downstream rolling mill 13 Downcoiler 20 Batch heating furnace 21 Rough rolling mill 22 Conveying furnace (transfer)
23 Edger mill 30 Crop shear device 31A, 31B Scale removal device 32 Vertical roll 40 Material temperature control device A 1st rolling line B 2nd rolling line Wa Thin slab Wb Thick slab Wc Intermediate material S Strip

Claims (2)

  1. 　連続鋳造機で鋳造されたスラブを直接的に複数台の圧延機で仕上げ圧延する第１の圧延ラインと前記第１の圧延ラインと平行に配置されてバッチ式加熱炉で加熱されたスラブを粗圧延機で圧延する第２の圧延ラインとを備え、前記第２の圧延ラインで圧延した中間素材を第１の圧延ラインに移送して当該第１の圧延ラインで最終製品まで仕上げ圧延する熱間圧延設備において、
    　前記第１の圧延ラインにおける複数台の圧延機は、それぞれ少なくとも１スタンドの圧延機で構成される上流側圧延機と下流側圧延機とからなり、これらの上流側圧延機と下流側圧延機との間の中間テーブルに、前記上流側圧延機で圧延されたスラブの先後端を切り揃えるクロップせん断装置を設置したことを特徴とする熱間圧延設備。     A slab cast by a continuous casting machine is directly finished and rolled by a plurality of rolling mills, and a slab heated in a batch furnace is arranged in parallel with the first rolling line and heated by a batch heating furnace. A second rolling line that is rolled by a rolling mill, and the intermediate material rolled in the second rolling line is transferred to the first rolling line and hot rolled to finish rolling to the final product in the first rolling line. In rolling equipment,
    The plurality of rolling mills in the first rolling line include an upstream rolling mill and a downstream rolling mill each composed of at least one stand rolling mill, and these upstream rolling mill and downstream rolling mill, A hot rolling facility characterized in that a crop shearing device that cuts and aligns the front and rear ends of the slab rolled by the upstream rolling mill is installed on the intermediate table.
  2. 　前記上流側圧延機と下流側圧延機との間の中間テーブルに、前記クロップせん断装置の圧延ライン上流側に位置して前記上流側圧延機で圧延されたスラブの温度を調節する材料温度調節装置を設置したことを特徴とする請求項１に記載の熱間圧延設備。 A material temperature adjusting device for adjusting the temperature of the slab rolled by the upstream rolling mill located on the upstream side of the rolling line of the crop shearing device on the intermediate table between the upstream rolling mill and the downstream rolling mill The hot rolling facility according to claim 1, wherein:
PCT/JP2011/072143 2011-09-28 2011-09-28 Hot rolling equipment WO2013046347A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT523062B1 (en) * 2020-02-11 2021-05-15 Primetals Technologies Austria GmbH Production plant and method for operating such a production plant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10277601A (en) * 1997-04-10 1998-10-20 Danieli & C Off Mecc Spa Rolling method for thin and flat product and related rolling line
JP2004066318A (en) * 2002-08-08 2004-03-04 Jfe Steel Kk Method and device for setting finishing side guide of hot rolling line
JP4001617B2 (en) * 2004-12-03 2007-10-31 エス・エム・エス・デマーク・アクチエンゲゼルシャフト CSP continuous casting equipment with roller hearth furnace and swivel table

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10277601A (en) * 1997-04-10 1998-10-20 Danieli & C Off Mecc Spa Rolling method for thin and flat product and related rolling line
JP2004066318A (en) * 2002-08-08 2004-03-04 Jfe Steel Kk Method and device for setting finishing side guide of hot rolling line
JP4001617B2 (en) * 2004-12-03 2007-10-31 エス・エム・エス・デマーク・アクチエンゲゼルシャフト CSP continuous casting equipment with roller hearth furnace and swivel table

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT523062B1 (en) * 2020-02-11 2021-05-15 Primetals Technologies Austria GmbH Production plant and method for operating such a production plant
AT523062A4 (en) * 2020-02-11 2021-05-15 Primetals Technologies Austria GmbH Production plant and method for operating such a production plant

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