JP2002219501A - Manufacturing method of hot steel strip and its manufacturing facilities - Google Patents
Manufacturing method of hot steel strip and its manufacturing facilitiesInfo
- Publication number
- JP2002219501A JP2002219501A JP2001018416A JP2001018416A JP2002219501A JP 2002219501 A JP2002219501 A JP 2002219501A JP 2001018416 A JP2001018416 A JP 2001018416A JP 2001018416 A JP2001018416 A JP 2001018416A JP 2002219501 A JP2002219501 A JP 2002219501A
- Authority
- JP
- Japan
- Prior art keywords
- slab
- steel strip
- thickness
- rolled material
- hot 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
Landscapes
- Metal Rolling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は連続鋳造設備から製
造される中厚のスラブを粗圧延機の代わりに板厚圧下プ
レスを使用して薄板まで圧延する連続して熱間鋼帯を製
造する方法及びその製造設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention manufactures a continuous hot steel strip by rolling a medium-thick slab produced from a continuous casting facility to a thin plate using a thickness reduction press instead of a rough rolling mill. The present invention relates to a method and a production facility thereof.
【０００２】[0002]
【従来の技術】連続鋳造設備で製造され供給される５０
ｍｍ乃至１５０ｍｍの板厚のいわゆる中厚スラブを薄板
まで圧延する圧延設備は、スラブを２０ｍｍ前後の厚さ
まで圧延する粗圧延設備と、次に１〜２ｍｍ程度の厚さ
に圧延する仕上圧延設備とからなる。かかる圧延設備を
構成する圧延機の配列には従来から各種のものが知られ
ている。なお本発明において、粗圧延設備によって製造
された板厚２０ｍｍ前後の材料を「粗バー」、板厚１〜
２ｍｍ程度に加工された材料を「圧延材」と呼ぶ。2. Description of the Related Art 50 manufactured and supplied by a continuous casting facility.
Rolling equipment for rolling a so-called medium-thick slab having a thickness of 1 mm to 150 mm to a thin plate, a rough rolling equipment for rolling the slab to a thickness of about 20 mm, and a finish rolling equipment for rolling the slab to a thickness of about 1 to 2 mm. Consists of Conventionally, various arrangements of rolling mills constituting such rolling equipment are known. In the present invention, a material having a thickness of about 20 mm manufactured by the rough rolling equipment is referred to as a “rough bar”,
A material processed to about 2 mm is called a "rolled material".
【０００３】図３はかかる従来の圧延設備の配列を図示
したものである。この図に示す圧延設備１は図示しない
バッチラインの連続鋳造設備により製造され所定の長さ
（例えば、厚さ９０ｍｍで長さ３０ｍ）に切断された中
厚のスラブ２を載せて圧延ラインに沿って搬送するテー
ブルローラ３と、スラブ２を所定の温度に保加熱するウ
ォーキングビーム炉４と、入側に縦型圧延機５を配置し
た複数（本図では２台）の粗圧延機６と、粗圧延した圧
延材を巻き取り巻き戻しする保加熱炉用の中間コイラー
７が配置されている。中間コイラー７は、粗圧延機６等
の圧延中又はテーブルローラ３の搬送中に粗バーの先端
部が冷却され、熱ひずみによる形状変形を防止するため
のものであり、先端部から巻き取った板厚２０ｍｍの粗
バーを後端部から巻き戻して下流側に搬送する。FIG. 3 shows an arrangement of such a conventional rolling equipment. The rolling equipment 1 shown in this figure mounts a medium-thick slab 2 manufactured by a continuous casting equipment of a batch line (not shown) cut to a predetermined length (for example, 90 mm in thickness and 30 m in length). A table roller 3 for transporting the slab 2 at a predetermined temperature, a walking beam furnace 4 for holding and heating the slab 2 at a predetermined temperature, and a plurality (two in this figure) of rough rolling mills 6 having a vertical rolling mill 5 disposed on the entrance side. An intermediate coiler 7 for a heating furnace for winding and rewinding the roughly rolled material is arranged. The intermediate coiler 7 is used to cool the leading end of the coarse bar during rolling of the rough rolling mill 6 or the like or transport of the table roller 3 to prevent shape deformation due to thermal strain, and was wound from the leading end. A coarse bar having a thickness of 20 mm is rewound from the rear end and transported downstream.
【０００４】さらに、圧延設備１は図に示すように入側
に縦型圧延機８を配置した複数（本図では５台）の仕上
圧延機９と、圧延材２′をコイル状に巻き取る複数の巻
取機（ダウンコイラー）１２を備え、搬送された粗バー
を仕上圧延機９で製品厚さの１〜２ｍｍ程度に仕上圧延
し、巻取機１２でピンチロール１１を介して圧延材２′
をコイル状に巻き取るようになっている。Further, as shown in the drawing, the rolling equipment 1 winds up a plurality of (five in this figure) finishing rolling mills 9 having a vertical rolling mill 8 disposed on the entrance side and a rolled material 2 'in a coil shape. A plurality of winding machines (down coilers) 12 are provided. The conveyed rough bar is finish-rolled to a product thickness of about 1 to 2 mm by a finishing mill 9, and the rolled material is passed through a pinch roll 11 by the winding machine 12. 2 '
Is wound up in a coil shape.
【０００５】[0005]
【発明が解決しようとする課題】しかし、図３に示した
従来の中厚スラブの圧延設備では、２０ｍｍ前後の粗
バーを作るのに２台の粗圧延機と保熱用の中間コイラー
が必要となりコストアップの要因となる、２０ｍｍの
粗バーを高温に保って作るために粗ミルを高速で圧延す
る必要があるが、このため、粗ミルと仕上ミルを連続
（タンデム）に圧延できない、中間コイラーを設けて
も高温を保持できないため搬送中に粗バーの先後端及び
幅端部が冷却し、精度不良を生じ圧延材の歩留まりが低
下しやすい、そのため需要の多い極薄板（０．８〜
１．０ｍｍ）の製造ができない等の問題があった。However, in the conventional medium-thickness slab rolling equipment shown in FIG. 3, two rough rolling mills and an intermediate coiler for heat retention are required to produce a rough bar of about 20 mm. It is necessary to roll the rough mill at a high speed in order to keep the 20 mm coarse bar at a high temperature, which causes a cost increase. However, the rough mill and the finishing mill cannot be rolled continuously (tandem). Since the high temperature cannot be maintained even if a coiler is provided, the leading and trailing ends and the width end of the rough bar are cooled during transportation, which results in poor accuracy and a reduction in the yield of rolled material.
1.0 mm) cannot be manufactured.
【０００６】かかる問題を解決するために粗圧延機の代
わりに板厚圧下プレスを使用する製造方法および設備が
特開平11-77113号公報により提案されている。これによ
り熱間鋼帯製造ライン長さを短縮して大幅に全設備コス
トを低減できる。さらに、プレス１台で短時間に大圧下
が可能であるため、スラブの温度低下なく減厚加工がで
きる。In order to solve such a problem, Japanese Patent Application Laid-Open No. 11-77113 proposes a production method and equipment using a thickness reduction press instead of a rough rolling mill. As a result, the length of the hot steel strip production line can be shortened and the total equipment cost can be greatly reduced. Further, since a single press can perform a large pressure reduction in a short time, the thickness can be reduced without lowering the temperature of the slab.
【０００７】しかしながら、特開平11-77113号公報によ
り提案されている熱間圧延設備列では、板厚１００ｍｍ
以上の板厚の大きいスラブから所定の板厚の熱間鋼帯を
製造するために複数の圧延機を有する仕上げ圧延機群が
必要である。However, in the row of hot rolling equipment proposed in Japanese Patent Application Laid-Open No. H11-77113,
A finishing rolling mill group having a plurality of rolling mills is required to produce a hot strip having a predetermined thickness from the slab having a large thickness.
【０００８】本発明の目的は、板厚圧下プレスと１台の
仕上げ圧延機により中厚スラブから熱間鋼帯を製造する
ことにより、特開平11-77113号公報で提案されている熱
間圧延設備列よりも更に短いライン長さとし、全設備コ
ストを大幅に低減可能な熱間鋼帯の連続製造方法及び設
備を提供することにある。An object of the present invention is to produce a hot steel strip from a medium-thickness slab using a thickness reduction press and one finishing rolling mill, thereby obtaining a hot-rolled steel strip proposed in JP-A-11-77113. It is an object of the present invention to provide a method and an apparatus for continuously manufacturing a hot steel strip which can have a line length shorter than that of an equipment row and can greatly reduce the total equipment cost.
【０００９】具体的には、粗圧延機の替わりに板厚圧
下プレスを使用することにより熱間鋼帯製造ライン長さ
を短縮して大幅に全設備コストを低減でき、プレス１
台で短時間に５０ｍｍ〜１５０ｍｍのスラブ厚から約２
ｍｍ〜２０ｍｍの板厚まで圧下できるので、スラブの温
度低下なく減厚加工ができ、約２ｍｍ〜２０ｍｍの圧
延材を最少であれば１台の圧延機で極薄板に圧延した後
直ちに急速冷却を施すことにより、高品質の鋼帯が高歩
留まりで生産でき、１コイル分に巻き取られる長さの
スラブを板厚圧下プレスに供給して高圧下を加えるた
め、巻取機直前の複雑な機構のせん断機を省略して圧延
ラインを省略でき、高生産性で極薄板の圧延材が製造
可能になる熱間鋼帯製造方法および設備を提供すること
にある。More specifically, the use of a thickness reduction press in place of the rough rolling mill shortens the length of the hot steel strip production line, thereby greatly reducing the total equipment cost.
It is possible to reduce the slab thickness from 50mm to 150mm
Since it can be rolled down to a sheet thickness of 20 mm to 20 mm, it is possible to reduce the thickness of the slab without lowering the temperature. By applying it, high quality steel strip can be produced with a high yield, and a slab of a length that can be wound into one coil is supplied to a plate thickness reduction press to apply high pressure, so a complicated mechanism immediately before the winding machine is applied. It is an object of the present invention to provide a hot steel strip manufacturing method and equipment which can omit a rolling machine by omitting a shearing machine and can manufacture a rolled material of an extremely thin plate with high productivity.
【００１０】[0010]
【課題を解決するための手段】本発明は、この課題を解
決すべくなされたもので、請求項１に係る発明によれば
５０ｍｍ乃至１５０ｍｍの板厚のスラブを製造し、次に
熱間鋼帯製造ライン上を搬送しながら所定の温度に保加
熱し、次にスラブ保加熱炉から搬送しながらスラブを板
厚圧下プレスで所定の厚さ（約２ｍｍ〜２０ｍｍ）に高
圧下し、次に板厚圧下プレスから搬送しながら材料を１
台の圧延機で圧延して製品厚さ（０．８〜１２．０ｍｍ
程度）に仕上げ、圧延材を急速冷却し、その後に所定の
長さに切断し、巻き取ることを特徴とする熱間鋼帯製造
方法が提供される。SUMMARY OF THE INVENTION The present invention has been made to solve this problem. According to the first aspect of the present invention, a slab having a thickness of 50 mm to 150 mm is manufactured, and then a hot slab is produced. While maintaining and heating to a predetermined temperature while transporting on the belt production line, the slab is transported from a slab holding and heating furnace, and the slab is pressurized to a predetermined thickness (about 2 mm to 20 mm) by a plate thickness reduction press, and then Material is transported from the thickness reduction press to 1
The product thickness (0.8 to 12.0mm)
), A rolled material is rapidly cooled, and then cut to a predetermined length and wound up.
【００１１】この発明によれば、連続鋳造設備で製造さ
れ熱間鋼帯製造ラインに搬送中にある程度冷却したスラ
ブをスラブ保加熱炉で所定の温度に保加熱できるので、
下流側の板厚圧下プレスによる成形圧下が容易かつ迅速
にできる。また約２ｍｍ〜２０ｍｍの圧延材の成形圧下
を従来のように複数の粗圧延機ではなく板厚圧下プレス
で行うので、温度低下の少ない良好な材料の成形圧下が
短時間にできる。さらに１台の最少台数の圧延機で仕上
げ、その後直ちに冷却することにより極薄板を含めた板
厚０．８〜１２．０ｍｍ程度の高品質な熱間鋼帯の製造
が可能になる。According to the present invention, a slab which has been manufactured in a continuous casting facility and has been cooled to some extent while being transported to a hot steel strip manufacturing line can be maintained and heated to a predetermined temperature in a slab storage and heating furnace.
The forming pressure can be easily and quickly reduced by the thickness reduction press on the downstream side. Further, since the rolling reduction of the rolled material of about 2 mm to 20 mm is performed by a plate thickness reduction press instead of a plurality of rough rolling mills as in the related art, the molding reduction of a good material with a small temperature drop can be performed in a short time. Further, by finishing with a minimum number of rolling mills and cooling immediately thereafter, it is possible to produce a high-quality hot steel strip having a thickness of about 0.8 to 12.0 mm including an extremely thin plate.
【００１２】請求項２に係る発明によれば５０ｍｍ乃至
１５０ｍｍの板厚のスラブを製造し、次にスラブを１コ
イル分の材料として巻き取れる所定の長さに切断し、次
に熱間鋼帯製造ライン上を搬送しながらスラブを所定の
温度に保加熱し、次にスラブを搬送しながら板厚圧下プ
レスで所定の厚さ（約２ｍｍ〜２０ｍｍ）に高圧下し、
次に板厚圧下プレスから搬送しながら材料を１台の圧延
機で圧延して製品厚さ（０．８〜１２．０ｍｍ程度）に
仕上げ、圧延材を急速冷却し、巻き取ることを特徴とす
る熱間鋼帯製造方法が提供される。According to the second aspect of the present invention, a slab having a thickness of 50 mm to 150 mm is manufactured, and then the slab is cut into a predetermined length that can be wound as a material for one coil. The slab is maintained and heated at a predetermined temperature while being transported on the production line, and then the slab is transported, and while the slab is being transported, the slab is reduced in pressure to a predetermined thickness (about 2 mm to 20 mm) by a thickness reduction press,
Next, the material is rolled by one rolling mill while being conveyed from a thickness reduction press to finish the product thickness (about 0.8 to 12.0 mm), and the rolled material is rapidly cooled and wound up. A hot steel strip manufacturing method is provided.
【００１３】この発明によれば、連続鋳造設備で製造さ
れ熱間鋼帯製造ラインに搬送中にある程度冷却したスラ
ブを所定の温度に保加熱できるので、下流側の板厚圧下
プレスによる成形圧下が容易かつ迅速にできる。また２
ｍｍ前後〜２０ｍｍ前後の圧延材の成形圧下を従来のよ
うに複数の粗圧延機ではなく板厚圧下プレスで行うの
で、温度低下の少ない良好な材料の成形圧下が短時間に
できる。さらに１台の最少台数の圧延機で仕上げ、その
後直ちに冷却することにより極薄板を含めた板厚０．８
〜１２．０ｍｍ程度の高品質な熱間鋼帯の製造が可能に
なる。According to the present invention, the slab, which has been manufactured in the continuous casting facility and has been cooled to a certain degree while being transported to the hot steel strip manufacturing line, can be maintained and heated to a predetermined temperature. Easy and quick. Also 2
Since the forming reduction of a rolled material of about 20 mm to about 20 mm is performed by a plate thickness reduction press instead of a plurality of rough rolling mills as in the related art, the molding reduction of a good material with a small temperature drop can be performed in a short time. Finishing with a minimum number of rolling mills and cooling immediately afterwards to achieve a thickness of 0.8 including ultra-thin plates.
It is possible to manufacture a high-quality hot steel strip of about 12.0 mm.
【００１４】請求項３に係る発明によれば５０ｍｍ乃至
１５０ｍｍの板厚のスラブを製造する連続鋳造設備と、
熱間鋼帯製造ライン上を搬送されるスラブを所定の温度
に保加熱するスラブ保加熱炉と、スラブ保加熱炉から搬
送されるスラブを所定の厚さに高圧下する板厚圧下プレ
スと、板厚圧下プレスから搬送される圧延材を圧延し製
品厚さの圧延材とする１台の圧延機と、圧延材を冷却す
る急速冷却装置と、圧延材を所定の長さに切断するせん
断機と、切断された圧延材を巻き取る巻取機と、を備え
たことを特徴とする熱間鋼帯製造設備が提供される。According to the third aspect of the present invention, there is provided a continuous casting facility for producing a slab having a thickness of 50 mm to 150 mm,
A slab holding / heating furnace that holds and heats a slab conveyed on a hot steel strip production line to a predetermined temperature, and a sheet thickness reduction press that presses the slab conveyed from the slab holding / heating furnace to a predetermined thickness. One rolling mill that rolls the rolled material conveyed from the thickness reduction press to produce a rolled material of a product thickness, a rapid cooling device that cools the rolled material, and a shearing machine that cuts the rolled material to a predetermined length And a winder for winding the cut rolled material.
【００１５】この発明によれば、連続鋳造設備で連続し
て製造する中厚スラブの板厚方向への圧下時に従来使用
していた複数の粗圧延機による粗圧延とスラブ保加熱用
の中間コイラーを廃止して、１台の板厚圧下プレスで高
圧下を行うので熱間鋼帯製造ラインの短縮化と、設備費
用の低減化ができる。また最終圧延機の後面に急速冷却
装置を配置し、圧延材を所定の温度まで冷却することに
より材質の優れた熱間鋼帯が得られる。また、連続鋳造
設備で連続してスラブを搬送できるので、コイルを効率
よく増産でき、圧延材の生産性を向上することができ
る。According to the present invention, an intermediate coiler for rough rolling and slab keeping and heating by a plurality of rough rolling mills conventionally used when a medium-thick slab continuously produced by a continuous casting facility is reduced in the thickness direction. Is eliminated, and the pressure is reduced by a single plate thickness reduction press. Therefore, the production line of the hot steel strip can be shortened, and the equipment cost can be reduced. Further, a rapid cooling device is arranged on the rear surface of the final rolling mill, and the rolled material is cooled to a predetermined temperature, whereby a hot steel strip having excellent material can be obtained. In addition, since the slab can be transported continuously by the continuous casting facility, the production of coils can be efficiently increased, and the productivity of the rolled material can be improved.
【００１６】請求項４に係る発明によれば５０ｍｍ乃至
１５０ｍｍの板厚のスラブを製造する連続鋳造設備と、
連続鋳造設備の出側に配置されスラブを１コイル分の圧
延材として巻き取る長さに切断するせん断機と、熱間鋼
帯製造ライン上を搬送されるスラブを所定の温度に保加
熱するスラブ保加熱炉と、スラブ保加熱炉から搬送され
るスラブを所定の厚さに高圧下する板厚圧下プレスと、
板厚圧下プレスから搬送される圧延材を圧延し製品厚さ
の圧延材とする１台の圧延機と、圧延材を冷却する急速
冷却装置と、切断された圧延材を巻き取る巻取機とを備
えたことを特徴とする熱間鋼帯製造設備が提供される。According to the fourth aspect of the present invention, there is provided a continuous casting facility for producing a slab having a thickness of 50 mm to 150 mm,
A shearing machine arranged on the outlet side of the continuous casting facility for cutting a slab into a length for winding a slab as a rolled material for one coil, and a slab for maintaining and heating a slab conveyed on a hot steel strip production line at a predetermined temperature. Preheating and heating furnace, and a plate thickness reduction press for reducing the slab conveyed from the slab preserving and heating furnace to a predetermined thickness.
A rolling mill that rolls the rolled material conveyed from the thickness reduction press into a rolled material of a product thickness, a rapid cooling device that cools the rolled material, and a winder that winds the cut rolled material A hot steel strip manufacturing facility provided with:
【００１７】請求項４の発明によれば、連続鋳造設備で
連続して製造する中厚スラブの板厚方向への圧下時に従
来使用していた複数の粗圧延機による粗圧延とスラブ保
加熱用の中間コイラーを廃止して、１台の板厚圧下プレ
スで高圧下を行うので熱間鋼帯製造ラインの短縮化と、
設備費用の低減化ができる。また、連続鋳造設備で連続
してスラブを搬送できるので、コイルを効率よく増産で
き、圧延材の生産性を向上することができる。また最終
圧延機の後面に急速冷却装置を配置し、圧延材を所定の
温度まで冷却することにより材質の優れた熱間鋼帯が得
られる。また、１コイル分に巻き取られる長さのスラブ
を板厚圧下プレスに供給して高圧下を加えるため、巻取
機直前の複雑な機構のせん断機を省略して圧延ラインを
省略できる。According to the fourth aspect of the present invention, when a medium-thickness slab continuously manufactured by a continuous casting facility is reduced in the sheet thickness direction, it is used for rough rolling and slab keeping and heating by a plurality of conventionally used roughing mills. The intermediate coiler is abolished, and high-pressure reduction is performed with a single plate thickness reduction press.
Equipment costs can be reduced. In addition, since the slab can be transported continuously by the continuous casting facility, the production of coils can be efficiently increased, and the productivity of the rolled material can be improved. Further, a rapid cooling device is arranged on the rear surface of the final rolling mill, and the rolled material is cooled to a predetermined temperature, whereby a hot steel strip having excellent material can be obtained. In addition, since the slab having a length that can be wound by one coil is supplied to the sheet thickness reduction press to apply high pressure, a shearing machine having a complicated mechanism immediately before the winding machine can be omitted, and the rolling line can be omitted.
【００１８】請求項５の発明によれば、前記スラブ保加
熱炉はトンネル炉又はダブルウォーキングビーム式であ
り、板厚圧下プレスの前にスラブの板幅方向を圧下する
幅圧下プレス又は縦型圧延機と、圧延機の入側に配置し
てスラブの板幅方向を圧下する縦型圧延機とのいずれか
一方又は両方を備える。According to the fifth aspect of the present invention, the slab holding / heating furnace is a tunnel furnace or a double walking beam type, and a width reduction press or a vertical rolling method for reducing the slab in the sheet width direction before the thickness reduction press. And / or a vertical rolling mill arranged on the entry side of the rolling mill to reduce the width of the slab in the sheet width direction.
【００１９】この発明によれば、トンネル炉の天井や側
面に設けた誘導加熱やガス加熱で加熱と保熱して、連続
鋳造設備で製造され熱間鋼帯製造ライン搬送中に冷却さ
れたスラブを迅速かつ容易に所定の最適温度で保加熱で
きる。According to the present invention, the slab produced by the continuous casting facility and cooled during the transportation of the hot steel strip production line is heated and kept warm by induction heating or gas heating provided on the ceiling or side surface of the tunnel furnace. The heating can be quickly and easily maintained at a predetermined optimum temperature.
【００２０】また板厚圧下プレスとその下流の最終圧延
機の圧下速度差により生じる材料のたるみ分（又は不足
分）をルーパーで滞留させて、たるみ分（又は不足分）
を吸収できる。Further, the slack (or shortage) of the material caused by the difference in the reduction speed between the thickness reduction press and the downstream downstream rolling mill is retained by a looper to obtain the slack (or shortage).
Can be absorbed.
【００２１】請求項６の発明によれば、板厚圧下プレス
の搬送前に幅圧下プレスの幅圧下金型又は縦型圧延機の
縦ロールによる圧下ができるので、スラブの板幅方向の
幅寸法の変更と規制を迅速かつ容易にできる。また、圧
延機の入側に縦型圧延機を配置したので、プレスで生じ
た幅変動を修正し、扁平形状の良好な圧延材ができる。According to the sixth aspect of the invention, the width of the slab can be reduced by the width reduction die of the width reduction press or the vertical rolls of the vertical rolling mill before the thickness reduction press is conveyed. Changes and regulations can be made quickly and easily. In addition, since the vertical rolling mill is arranged on the entry side of the rolling mill, width fluctuations caused by the press can be corrected, and a rolled material having a good flat shape can be obtained.
【００２２】請求項７の発明は、また最終圧延機の入側
に上述した様な保加熱機構のトンネル炉を置いたので、
ルーパーで停留中に予想される温度低下を加味して圧延
材を所定の温度で保加熱するので、最適な材料を圧延機
に搬送できる。According to a seventh aspect of the present invention, a tunnel furnace having the above-mentioned heating and holding mechanism is placed on the entry side of the final rolling mill.
Since the rolled material is kept and heated at a predetermined temperature in consideration of a temperature drop expected while the looper is stopped, the optimum material can be transported to the rolling mill.
【００２３】請求項８の発明は、さらに、前記連続鋳造
設備とトンネル炉間に配置され適宜スラブを切断するせ
ん断機を備えたので、通常は連続してスラブを効率よく
搬送するが、運転上の都合で熱間鋼帯製造ラインへのス
ラブの搬送を停止する場合は、迅速にスラブを切断する
ことができる。The invention according to claim 8 further comprises a shearing machine disposed between the continuous casting facility and the tunnel furnace for appropriately cutting the slab, so that the slab is normally continuously and efficiently conveyed. When the conveyance of the slab to the hot steel strip production line is stopped for the above reasons, the slab can be cut quickly.
【００２４】なお、板厚圧下プレスでは１５０ｍｍ程度
の圧下が可能であるため、板厚２〜２０ｍｍの粗バーに
板厚圧下プレス成形する本発明では、中厚スラブの最大
板厚は１５０ｍｍとする必要がある。逆に、中厚スラブ
の板厚が５０ｍｍ未満の場合、板厚圧下プレスを用いる
必要はなく、圧延機で板厚２〜２０ｍｍの粗バーが製造
可能となる。そこで中厚スラブの板厚は５０〜１５０ｍ
ｍとした。In the present invention, in which the thickness is reduced by about 150 mm in the thickness reduction press, the maximum thickness of the medium thickness slab is set to 150 mm in the present invention in which the thickness reduction press forming is performed on a rough bar having a thickness of 2 to 20 mm. There is a need. Conversely, when the thickness of the medium-thickness slab is less than 50 mm, it is not necessary to use a thickness reduction press, and a rough bar having a thickness of 2 to 20 mm can be manufactured by a rolling mill. Therefore, the thickness of the medium thickness slab is 50-150m
m.
【００２５】[0025]
【発明の実施の形態】以下、本発明の好ましい実施形態
を図面を参照して説明する。なお、この明細書では、板
厚圧下プレス前の材料を「スラブ」、板厚圧下プレス〜
仕上げ圧延間の材料を「粗バー」、仕上げ圧延後の材料
を「圧延材」と称する。また、各図において共通する部
分には同一の符号を付して重複した説明を省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In this specification, the material before the thickness reduction press is referred to as “slab”,
The material during finish rolling is referred to as “rough bar”, and the material after finish rolling is referred to as “rolled material”. In addition, the same reference numerals are given to common parts in the respective drawings, and redundant description will be omitted.
【００２６】（実施の形態１）図１は、本発明の他の実
施の形態による熱間鋼帯製造設備の全体構成図である。
本発明の熱間鋼帯製造設備２０は５０ｍｍ乃至１５０ｍ
ｍの板厚（いわゆる中厚）のスラブ２１を連続して製造
する連続鋳造設備（例えば、冷却ロール２本を備えた双
ロール式）２２と、スラブ２１を載せて熱間鋼帯製造ラ
イン上に沿って搬送する複数の駆動ロールから成るテー
ブルローラ２３と、熱間鋼帯製造ライン上を搬送しなが
らスラブ２１を所定の温度に保加熱するスラブ保加熱炉
２４と、スラブ保加熱炉２４から搬送されるスラブ２１
を、走行しながら約２ｍｍ〜２０ｍｍの板厚まで連続的
に高圧下する板厚圧下プレス２５と、板厚圧下プレス２
５から搬送される高圧下された材料を所定の製品厚さま
で圧延する１台の圧延機２６と圧延材２１′を所定の温
度まで冷却するランナウトテーブルなどの急速冷却装置
４１と、圧延材２１′を所定の長さに切断するせん断機
（高速シャー）２７と、切断された圧延材２１をピンチ
ロール２８で搬送してコイル状に巻き取る複数（本図で
は２台）の巻取機（ダウンコイラー）２９と、を備えて
いる。なお巻取機はカローゼルコイラーでもよい。(Embodiment 1) FIG. 1 is an overall configuration diagram of a hot steel strip manufacturing facility according to another embodiment of the present invention.
The hot strip manufacturing equipment 20 of the present invention has a length of 50 mm to 150 m.
m, a continuous casting facility (for example, a twin-roll type equipped with two cooling rolls) 22 for continuously producing a slab 21 having a thickness of m (so-called medium thickness), and a slab 21 placed on a hot steel strip production line. A table roller 23 composed of a plurality of drive rolls conveyed along a slab, a slab preheating furnace 24 for preserving and heating the slab 21 to a predetermined temperature while conveying the hot slab 21 on a hot strip manufacturing line, Slab 21 to be transported
, A thickness reduction press 25 which continuously reduces the pressure to a thickness of about 2 mm to 20 mm while traveling, and a thickness reduction press 2
A rolling mill 26 for rolling the material under high pressure conveyed from 5 to a predetermined product thickness, a rapid cooling device 41 such as a run-out table for cooling the rolled material 21 'to a predetermined temperature, and a rolled material 21' (High-speed shear) 27 that cuts the rolled material into a predetermined length, and a plurality of (two in this figure) winders that convey the cut rolled material 21 by a pinch roll 28 and wind it into a coil shape (Coiler) 29. The winder may be a carousel coiler.
【００２７】スラブ保加熱炉２４はこの例ではトンネル
炉であり、トンネル炉の天井や側面に設けた図示しない
誘導加熱又はガス加熱で加熱と保熱を行い、連続鋳造設
備２２で製造され熱間鋼帯製造ラインに搬送中に冷却さ
れたスラブ２１を迅速かつ容易に所定の温度まで加熱
し、また保熱して下流側に最適温度で搬送する。The slab holding / heating furnace 24 is a tunnel furnace in this example. The slab holding / heating furnace 24 performs heating and heat holding by induction heating or gas heating (not shown) provided on a ceiling or a side surface of the tunnel furnace. The slab 21 cooled during transportation to the steel strip production line is quickly and easily heated to a predetermined temperature, and is kept at a desired temperature and transported downstream at an optimum temperature.
【００２８】また図１において、板厚圧下プレス２５の
前後にはスラブ２１のたるみ分を滞留させるための前後
ルーパー３０，３１が配置されている。前ルーパー３０
は、連続鋳造設備２２で製造されピンチロール３２で連
続的に搬送されるスラブ２１の搬送速度と板厚圧下プレ
ス２５の高圧下速度の速度差により生じるスラブ２１の
たるみ分を滞留させるとともに、スラブ２１のたるみ変
動を吸収している。同様に後ルーパー３１も、板厚圧下
プレス２５の高圧下速度と圧延機２６の圧下速度差によ
り生じる材料のたるみ分を滞留させるとともに、圧延材
２１′のたるみ変動を吸収している。In FIG. 1, front and rear loopers 30, 31 for retaining the slack of the slab 21 are disposed before and after the plate thickness reduction press 25. Front looper 30
Is to retain the slack of the slab 21 caused by the speed difference between the conveying speed of the slab 21 manufactured by the continuous casting equipment 22 and continuously conveyed by the pinch roll 32 and the high-speed speed of the plate thickness lowering press 25, 21 slack fluctuations are absorbed. Similarly, the rear looper 31 retains the slack of the material caused by the difference between the high-speed reduction speed of the plate thickness reduction press 25 and the reduction speed of the rolling mill 26, and absorbs the slack fluctuation of the rolled material 21 '.
【００２９】さらに、板厚圧下プレス２５の前には、熱
間鋼帯製造ラインを挟んで図示しない往復駆動装置で近
接離反自在な１対の幅圧下金型３３を有して、スラブ２
１の板幅方向を圧下する幅圧下プレス３４が配置されて
いる。幅圧下プレス３４は走間プレスのように走行しな
がらスラブを幅圧下するので生産性が向上する。また高
圧下をかけられるのでスラブ内部に発生する気泡や空隙
（センターポロシティ）を防止できる。なお幅圧下量は
減少するが、幅圧下プレスの代わりにバーティカルスケ
ールブレーカーのような縦ロールから成る通常の縦型圧
延機を使用してもよい。従って、スラブの板幅方向の修
正と規制を迅速かつ容易にできる。Further, in front of the thickness reduction press 25, a pair of width reduction dies 33 which can be approached and separated by a reciprocating drive device (not shown) across the hot steel strip production line are provided.
1, a width reduction press 34 for reducing the width in the plate width direction is arranged. Since the width reduction press 34 reduces the width of the slab while traveling like a press during running, the productivity is improved. Further, since high pressure can be applied, bubbles and voids (center porosity) generated inside the slab can be prevented. Although the width reduction is reduced, a normal vertical rolling mill including vertical rolls such as a vertical scale breaker may be used instead of the width reduction press. Therefore, correction and regulation of the slab in the plate width direction can be performed quickly and easily.
【００３０】また図１に示すように圧延機２６の入側に
は、縦ロールから成る通常の縦型圧延機３５が配置され
ている。縦型圧延機３５によりプレスで生じた幅変動を
修正し、平面形状の良好な圧延材ができる。As shown in FIG. 1, on the entry side of the rolling mill 26, a normal vertical rolling mill 35 composed of a vertical roll is disposed. The vertical roll 35 corrects width fluctuations caused by pressing, and a rolled material having a good planar shape can be obtained.
【００３１】前記圧延機２６の入側には、天井や側面に
設けた図示しない誘導加熱又はガス加熱で加熱と保熱を
行うトンネル炉３６が配置されている。従って、後ルー
パー３１で滞留中に予想される圧延材２１の温度低下を
加味して所定の温度で保加熱させるので、最適な温度で
圧延機２６に搬送するとともにその後の冷却において必
要な焼入れ開始温度を確保できる。On the entrance side of the rolling mill 26, a tunnel furnace 36 for heating and keeping heat by induction heating or gas heating (not shown) provided on a ceiling or a side surface is arranged. Therefore, the rolled material 21 is maintained and heated at a predetermined temperature in consideration of the expected temperature drop of the rolled material 21 during staying in the rear looper 31, so that the material is transported to the rolling mill 26 at the optimum temperature and the quenching necessary for the subsequent cooling is started. The temperature can be secured.
【００３２】圧延機２６は１台で充分所定の厚みに仕上
げ可能である。圧延機には４重圧延機でベンダー、ぺア
クロス等の形状制御装置を備えるものを配置することが
好ましい。A single rolling mill 26 can be finished to a sufficiently predetermined thickness. It is preferable to arrange a rolling mill equipped with a shape control device such as a bender, a cross, etc. among the rolling mills.
【００３３】圧延機２６の後面のランナウトテーブルに
は急速冷却装置４１を備えている。急速冷却装置は特願
平2000−056213に記される小さい冷却長で高い冷却能を
有する冷却装置を配置するのがよい。The runout table on the rear side of the rolling mill 26 is provided with a rapid cooling device 41. As the rapid cooling device, a cooling device having a small cooling length and a high cooling capacity described in Japanese Patent Application No. 2000-0556213 is preferably arranged.
【００３４】また連続鋳造設備２２とトンネル炉２４間
に、せん断機３７が設けられている。これは通常は連続
してスラブ２１を効率的に搬送しているが、運転上の都
合で熱間鋼帯製造ライン上のスラブ２１を停止したい場
合、迅速にスラブ２１を切断する。A shearing machine 37 is provided between the continuous casting facility 22 and the tunnel furnace 24. This normally continuously transports the slab 21 efficiently, but when it is desired to stop the slab 21 on the hot steel strip production line due to operational reasons, the slab 21 is cut quickly.
【００３５】次に図１により、本発明の熱間鋼帯製造方
法を説明する。この図において連続鋳造設備２２で５
０ｍｍ乃至１５０ｍｍの板厚の中厚スラブ２１を連続し
て製造し、次に熱間鋼帯製造ライン上をピンチロール
３２で搬送しながらスラブ２１をスラブ保加熱炉である
トンネル炉２４で所定の温度に保熱と加熱をし、次に
トンネル炉２４からテーブルローラ２３に載って搬送さ
れ、前ルーパー３０でたるみ分を滞留しかつたるみ分を
吸収させながら幅圧下プレス３４で所定の板幅に圧下さ
れたスラブ２１を、板厚圧下プレス２５で約２ｍｍ〜２
０ｍｍの板厚まで高圧下し、次に板厚圧下プレス２５
から搬送され後ルーパー３１でたるみ分を滞留しかつた
るみの変動を吸収させながら縦圧延機３５で所定の板幅
に圧下された材料を最終圧延機２６で連続して製品厚さ
の０．８〜１２ｍｍ程度の極薄板あるいは薄板に圧延
し、直ちに急速冷却装置４１で所定の温度まで圧延材
２１′を冷却し、その後にせん断機である高速シャー
２７とで所定の長さに切断された圧延材２１′をピンチ
ロール２８で搬送されて巻取機である複数のダウンコイ
ラー２９に交互に巻き取られてコイルを形成できる。Next, a method for manufacturing a hot steel strip according to the present invention will be described with reference to FIG. In this figure, 5
A medium-thick slab 21 having a thickness of 0 mm to 150 mm is continuously manufactured, and then the slab 21 is conveyed by a pinch roll 32 on a hot steel strip manufacturing line, and is slab-prescribed in a tunnel furnace 24 which is a slab holding and heating furnace. Heat is maintained and heated to a temperature, and then transported from the tunnel furnace 24 on the table rollers 23, while retaining the slack in the front looper 30 and absorbing the slack to a predetermined width with the width reduction press 34. The reduced slab 21 is pressed by a plate thickness reduction press 25 to about 2 mm to 2 mm.
0mm plate thickness is reduced to high pressure.
After being conveyed from the machine, the slacked portion is retained by the looper 31 and the material reduced to a predetermined plate width by the vertical rolling mill 35 is continuously processed by the final rolling mill 26 by 0.8 mm of the product thickness while absorbing the fluctuation of the slack. Rolled into an ultra-thin plate or a thin plate of about 12 mm, immediately cooled the rolled material 21 ′ to a predetermined temperature by a rapid cooling device 41, and then cut by a high-speed shear 27 as a shearing machine to a predetermined length. The material 21 'can be conveyed by a pinch roll 28 and wound up alternately by a plurality of down coilers 29 as a winding machine to form a coil.
【００３６】このように、熱間鋼帯製造ラインの上流側
に複数の粗圧延機の代わりにスラブの板厚を高付加させ
る板厚圧下プレス２５を使用したので、迅速かつ容易に
品質の高い極薄板あるいは薄板が製造でき、また熱間鋼
帯製造ラインを短縮化できる。またスラブを連続して搬
送し板厚圧下プレスにおける通板と尻抜けは１回とする
ことにより問題の発生しやすい作業回数を減少させ、さ
らに粗圧延機をなくしたので、生産性を向上させること
ができる。さらに設備コストも削減できる。As described above, since the thickness reduction press 25 for increasing the thickness of the slab is used instead of the plurality of rough rolling mills on the upstream side of the hot steel strip production line, high quality can be obtained quickly and easily. Ultra-thin plate or thin plate can be manufactured, and a hot steel strip manufacturing line can be shortened. In addition, the number of operations that are likely to cause problems is reduced by continuously transporting the slab and performing one pass of the slab and removing the bottom in the thickness reduction press, and the productivity is improved because the rough rolling mill is eliminated. be able to. Furthermore, equipment costs can be reduced.
【００３７】（実施の形態２）図２は、本発明の一つの
実施の形態による熱間鋼帯製造設備の全体構成図であ
る。この図において、図１の設備と異なる点は、スラブ
を切断した後保加熱高圧下プレスするようにした点であ
る。(Embodiment 2) FIG. 2 is an overall configuration diagram of a hot steel strip manufacturing facility according to one embodiment of the present invention. In this figure, the point different from the equipment of FIG. 1 is that the slab is cut and then pressed under holding and high pressure.
【００３８】本発明の熱間鋼帯製造設備２０は５０ｍｍ
乃至１５０ｍｍの板厚（いわゆる中厚）のスラブ２１を
連続して製造する連続鋳造設備（例えば、冷却ロール２
本を備えた双ロール式）２２と、スラブ２１を載せて熱
間鋼帯製造ライン上に沿って搬送する複数の駆動ロール
から成るテーブルローラ２３と、連続鋳造機２０の出側
に配置されるスラブ２１を１コイル分の圧延材２１′と
して巻き取る所定の長さに切断するせん断機３７と、熱
間鋼帯製造ライン上を搬送しながらスラブ２１を所定の
温度に保加熱するスラブ保加熱炉２４と、スラブ保加熱
炉２４から搬送されるスラブ２１を、走行しながら約２
ｍｍ〜２０ｍｍの板厚まで連続的に高圧下する板厚圧下
プレス２５と、板厚圧下プレス２５から搬送される高圧
下された材料を所定の製品厚さまで圧延する１台の圧延
機２６と圧延材２１′を所定の温度まで冷却するランナ
ウトテーブルなどの急速冷却装置４１と、圧延材２１を
ピンチロール２８で搬送してコイル状に巻き取る複数
（本図では２台）の巻取機（ダウンコイラー）２９と、
を備えている。なお巻取機はカローゼルコイラーでもよ
い。The hot steel strip manufacturing equipment 20 of the present invention has a length of 50 mm.
Continuous casting equipment (for example, a cooling roll 2) for continuously producing a slab 21 having a thickness (so-called medium thickness) of
A twin roller type) 22 having a book, a table roller 23 composed of a plurality of drive rolls on which a slab 21 is placed and transported along a hot steel strip production line, and arranged on the exit side of the continuous casting machine 20. A shearing machine 37 for cutting the slab 21 into a predetermined length for winding the slab 21 as a rolled material 21 'for one coil, and a slab preheating for preserving and heating the slab 21 at a predetermined temperature while being transported on a hot steel strip production line. While traveling through the furnace 24 and the slab 21 conveyed from the slab holding / heating furnace 24,
a thickness reduction press 25 for continuously reducing the pressure to a thickness of 20 mm to 20 mm, and a rolling mill 26 for rolling the high-pressure material conveyed from the thickness reduction press 25 to a predetermined product thickness. A rapid cooling device 41 such as a run-out table for cooling the material 21 ′ to a predetermined temperature; and a plurality (two in this figure) of winding machines (down in this figure) for transporting the rolled material 21 by a pinch roll 28 and winding it in a coil shape. Coiler) 29,
It has. The winder may be a carousel coiler.
【００３９】スラブ保加熱炉２４はこの例ではトンネル
炉であり、トンネル炉の天井や側面に設けた図示しない
誘導加熱又はガス加熱で加熱と保熱を行い、連続鋳造設
備２２で製造され熱間鋼帯製造ラインに搬送中に冷却さ
れたスラブ２１を迅速かつ容易に所定の温度まで加熱
し、また保熱して下流側に最適温度で搬送する。The slab holding / heating furnace 24 is a tunnel furnace in this example, and performs heating and heat holding by induction heating or gas heating (not shown) provided on the ceiling or the side of the tunnel furnace. The slab 21 cooled during transportation to the steel strip production line is quickly and easily heated to a predetermined temperature, and is kept at a desired temperature and transported downstream at an optimum temperature.
【００４０】前記板厚圧下プレス２５の下流側には圧延
材２１′のたるみ分を滞留させるためのルーパー３１が
配置されている。ルーパー３１は、板厚圧下プレス２５
の高圧下速度と圧延機２６の圧下速度差により生じる材
料のたるみ分を滞留させるとともに、圧延材２１′のた
るみ変動を吸収している。A looper 31 for retaining the slack of the rolled material 21 ′ is disposed downstream of the thickness reducing press 25. The looper 31 is a plate thickness reduction press 25.
The slack of the material caused by the difference between the high-speed reduction speed of the rolling mill 26 and the reduction speed of the rolling mill 26 is retained, and the slack fluctuation of the rolled material 21 'is absorbed.
【００４１】前記板厚圧下プレス２５の前には、熱間鋼
帯製造ラインを挟んで図示しない往復駆動装置で近接離
反自在な１対の幅圧下金型３３を有して、スラブ２１の
板幅方向を圧下する幅圧下プレス３４が配置されてい
る。幅圧下プレス３４は走間プレスのように走行しなが
らスラブを幅圧下するので生産性が向上する。また高圧
下をかけられるのでスラブ内部に発生する気泡や空隙
（センターポロシティ）を防止できる。なお幅圧下量は
減少するが、幅圧下プレスの代わりにバーティカルスケ
ールブレーカーのような縦ロールから成る通常の縦型圧
延機を使用してもよい。従って、スラブの板幅方向の修
正と規制を迅速かつ容易にできる。In front of the plate thickness reduction press 25, a pair of width reduction dies 33 which can be moved close to and away from each other by a reciprocating drive device (not shown) across the hot steel strip production line are provided. A width reduction press 34 for reducing the width is provided. Since the width reduction press 34 reduces the width of the slab while traveling like a press during running, the productivity is improved. Further, since high pressure can be applied, bubbles and voids (center porosity) generated inside the slab can be prevented. Although the width reduction is reduced, a normal vertical rolling mill including vertical rolls such as a vertical scale breaker may be used instead of the width reduction press. Therefore, correction and regulation of the slab in the plate width direction can be performed quickly and easily.
【００４２】また図２に示すように圧延機２６の入側に
は、縦ロールから成る通常の縦型圧延機３５が配置され
ている。縦型圧延機３５によりプレスで生じた幅変動を
修正し、平面形状の良好な圧延材ができる。As shown in FIG. 2, on the entry side of the rolling mill 26, a normal vertical rolling mill 35 composed of a vertical roll is arranged. The vertical roll 35 corrects width fluctuations caused by pressing, and a rolled material having a good planar shape can be obtained.
【００４３】また最終圧延機２６の入側には、天井や側
面に設けた図示しない誘導加熱又はガス加熱で加熱と保
熱を行うトンネル炉３６が配置されている。従って、後
ルーパー３１で滞留中に予想される圧延材２１の温度低
下を加味して所定の温度で保加熱させるので、最適な温
度で圧延機２６に搬送するとともにその後の冷却におい
て必要な焼入れ開始温度を確保できる。At the entrance of the final rolling mill 26, a tunnel furnace 36 for heating and keeping heat by induction heating or gas heating, not shown, provided on the ceiling or side surface is arranged. Therefore, the rolled material 21 is maintained and heated at a predetermined temperature in consideration of the expected temperature drop of the rolled material 21 during staying in the rear looper 31, so that the material is transported to the rolling mill 26 at the optimum temperature and the quenching necessary for the subsequent cooling is started. The temperature can be secured.
【００４４】最終圧延機２６は１台で充分所定の厚みに
仕上げ可能である。最終圧延機には４重圧延機でベンダ
ー、ぺアクロス等の形状制御装置を備えるものを配置す
ることが好ましい。The final rolling mill 26 can be finished to a sufficiently predetermined thickness with one unit. As the final rolling mill, it is preferable to arrange a four-high rolling mill having a shape control device such as a bender and a cross.
【００４５】最終圧延機２６の後面のランナウトテーブ
ルには急速冷却装置４１を備えている。急速冷却装置は
特願平2000−056213に記される小さい冷却長で高い冷却
能を有する冷却装置を配置する。The run-out table on the rear surface of the final rolling mill 26 is provided with a rapid cooling device 41. As the rapid cooling device, a cooling device having a small cooling length and a high cooling capacity described in Japanese Patent Application No. 2000-0556213 is arranged.
【００４６】次に図２により、本発明の熱間鋼帯製造方
法を説明する。この図において連続鋳造設備２２で５
０ｍｍ乃至１５０ｍｍの板厚の中厚スラブ２１を連続し
て製造し、次に熱間鋼帯製造ライン上をピンチロール
３２で搬送し、せん断機３７でスラブ２１を１コイル
分の圧延材２１′として巻き取れる所定の長さに切断
し、スラブ２１をスラブ保加熱炉であるトンネル炉２
４で所定の温度に保熱と加熱をし、次にトンネル炉２
４からテーブルローラ２３に載って搬送され、幅圧下プ
レス３４で所定の板幅に圧下されたスラブ２１を、板厚
圧下プレス２５で約２ｍｍ〜２０ｍｍの板厚まで高圧下
し、次に板厚圧下プレス２５から搬送されルーパー３
１でたるみ分を滞留しかつたるみの変動を吸収させなが
ら縦圧延機３５で所定の板幅に圧下された材料を最終圧
延機２６で連続して製品厚さの０．８〜１２ｍｍ程度の
極薄板あるいは薄板に圧延し、直ちに急速冷却装置４
１で所定の温度まで圧延材２１′を冷却し、その後に
圧延材２１′をピンチロール２８で搬送されて巻取機で
ある複数のダウンコイラー２９に交互に巻き取られてコ
イルを形成できる。Next, a method for manufacturing a hot steel strip according to the present invention will be described with reference to FIG. In this figure, 5
A medium-thick slab 21 having a thickness of 0 mm to 150 mm is continuously manufactured, and then conveyed by a pinch roll 32 on a hot steel strip manufacturing line. The slab 21 is cut into a predetermined length that can be taken up as a
In Step 4, the heat is kept and heated to a predetermined temperature.
4, the slab 21 conveyed on the table roller 23 and reduced by the width reduction press 34 to a predetermined plate width is reduced by the thickness reduction press 25 to a plate thickness of about 2 mm to 20 mm. Looper 3 conveyed from the pressing press 25
The material which has been reduced to a predetermined plate width by the vertical rolling mill 35 while the slack is retained and the fluctuation of the slack is absorbed by the final rolling mill 26 is continuously used in the final rolling mill 26 to obtain a pole having a product thickness of about 0.8 to 12 mm. Rolled into a thin plate or a thin plate, and immediately cooled
In step 1, the rolled material 21 'is cooled to a predetermined temperature, and thereafter, the rolled material 21' is conveyed by a pinch roll 28 and wound alternately by a plurality of down coilers 29, which are winders, to form a coil.
【００４７】このように、熱間鋼帯製造ラインの上流側
に複数の粗圧延機の代わりにスラブの板厚を高付加させ
る板厚圧下プレス２５を使用したので、迅速かつ容易に
品質の高い極薄板あるいは薄板が製造でき、また熱間鋼
帯製造ラインを短縮化できる。さらに粗圧延機をなくし
たので、生産性を向上させることができる。さらに設備
コストも削減できる。As described above, since the thickness reduction press 25 for increasing the thickness of the slab is used instead of the plurality of rough rolling mills on the upstream side of the hot steel strip production line, high quality can be obtained quickly and easily. Ultra-thin plate or thin plate can be manufactured, and a hot steel strip manufacturing line can be shortened. Further, since the rough rolling mill is eliminated, productivity can be improved. Furthermore, equipment costs can be reduced.
【００４８】なお本発明では上述した実施形態に限定さ
れず、本発明の要旨を逸脱しない範囲で種々変更できる
ことはもちろんである。It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.
【００４９】[0049]
【発明の効果】上述したように、本発明の熱間鋼帯製造
方法及び設備によれば、粗圧延機の替わりに板厚圧下プ
レスを使用して熱間鋼帯製造ライン長さを短縮化したの
で大幅に全設備コストを低減でき、また通板や尻抜けの
回数を削減したのでトラブルを減少でき、スラブを高温
に保持した状態で最終圧延機に搬送した後、冷却装置で
冷却できるので、歩留まりの向上と品質の高い圧延材が
できるとともに極薄板の圧延材が製造できる等の優れた
効果を有する。As described above, according to the hot steel strip manufacturing method and equipment of the present invention, the length of the hot steel strip manufacturing line can be shortened by using a sheet thickness reduction press instead of the rough rolling mill. As a result, it is possible to greatly reduce the total equipment cost, reduce the number of times of threading and trailing, and reduce troubles.After transporting the slab to the final rolling mill while maintaining it at a high temperature, it can be cooled by the cooling device. In addition, the present invention has an excellent effect of improving the yield and producing a high-quality rolled material and producing an extremely thin rolled material.
【００５０】また１コイル分に巻き取られる長さのスラ
ブを板厚圧下プレスに供給して高圧下を加える場合は巻
取機直前の複雑な機構のせん断機を省略して圧延ライン
を省略できるためさらに全設備コストを低減できる。When a slab having a length to be wound by one coil is supplied to a plate thickness reduction press to apply high pressure, a shearing machine having a complicated mechanism immediately before the winding machine can be omitted, and the rolling line can be omitted. Therefore, the total equipment cost can be further reduced.
【図１】本発明による熱間鋼帯製造設備の実施形態１の
全体構成図。FIG. 1 is an overall configuration diagram of Embodiment 1 of a hot steel strip manufacturing facility according to the present invention.
【図２】本発明による熱間鋼帯製造設備の実施形態２の
全体構成図。FIG. 2 is an overall configuration diagram of Embodiment 2 of a hot steel strip manufacturing facility according to the present invention.
【図３】従来の熱間鋼帯圧延設備の配列を示す図。FIG. 3 is a diagram showing an arrangement of conventional hot strip rolling equipment.
１ 圧延設備 ２ スラブ ２′ 圧延材 ３ テーブルローラ ４ ウォーキング炉 ５ 縦型圧延機 ６ 粗圧延機 ７ 中間コイラー ８ 縦型圧延機 ９ 仕上圧延機 １１ ピンチロール １２ 巻取機 ２０ 熱間鋼帯製造設備 ２１ スラブ ２１′ 圧延材 ２２ 連続鋳造設備 ２３ テーブルローラ ２４ スラブ保加熱炉（トンネル炉） ２５ 板厚圧下プレス ２６ 圧延機 ２７ 高速シャー ２８ ピンチロール ２９ 巻取機（ダウンコイラー） ３０ ルーパー ３１ ルーパー ３２ ピンチロール ３３ 幅圧下金型 ３４ 幅圧下プレス ３５ 縦型圧延機 ３６ トンネル炉 ３７ せん断機 ４１ 急速冷却装置（ランナウトテーブル） DESCRIPTION OF SYMBOLS 1 Rolling equipment 2 Slab 2 'Rolled material 3 Table roller 4 Walking furnace 5 Vertical rolling mill 6 Rough rolling mill 7 Intermediate coiler 8 Vertical rolling mill 9 Finishing rolling mill 11 Pinch roll 12 Winding machine 20 Hot steel strip manufacturing equipment DESCRIPTION OF SYMBOLS 21 Slab 21 'Rolled material 22 Continuous casting equipment 23 Table roller 24 Slab keeping heating furnace (tunnel furnace) 25 Thickness reduction press 26 Rolling machine 27 High speed shear 28 Pinch roll 29 Winding machine (Down coiler) 30 Looper 31 Looper 32 Pinch Roll 33 Width reduction die 34 Width reduction press 35 Vertical rolling mill 36 Tunnel furnace 37 Shearing machine 41 Rapid cooling device (runout table)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２２Ｄ 11/12 Ｂ２２Ｄ 11/12 Ａ Ｃ Ｄ (72)発明者 曽谷 保博 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 三宅 勝 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 長田 史郎 神奈川県横浜市磯子区新中原町１番地 石 川島播磨重工業株式会社横浜エンジニアリ ングセンター内 (72)発明者 三上 昌夫 神奈川県横浜市磯子区新中原町１番地 石 川島播磨重工業株式会社機械・プラント開 発センター内 (72)発明者 西井 崇 神奈川県横浜市磯子区新中原町１番地 石 川島播磨重工業株式会社機械・プラント開 発センター内 Ｆターム(参考） 4E002 AA04 AB04 AD02 AD04 BA02 BB05 BD01 BD02 BD03 BD04 BD06 BD07 BD08 CB07 CB08──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B22D 11/12 B22D 11/12 ACD (72) Inventor Yasuhiro Soya 1-1-1 Marunouchi, Chiyoda-ku, Tokyo No. 2 Nippon Kokan Co., Ltd. (72) Masakazu Miyake 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Shiro Nagata 1, Shinnakaharacho, Isogo-ku, Yokohama-shi, Kanagawa Ishikawashima Harima Heavy Industries Co., Ltd. Yokohama Engineering Center (72) Inventor Masao Mikami 1 Shinnakaharacho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishikawashima Harima Heavy Industries Machinery & Plant Development Center (72) Inventor Nishii Takashi Ishikawashima-Harima Heavy Industries Co., Ltd. Machine and Plant Development Center 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa F term (reference) 4E002 AA04 AB04 AD02 AD04 BA02 BB05 BD01 BD02 BD03 BD04 BD06 BD07 BD08 CB07 CB08
Claims (8)
１５０ｍｍの板厚のスラブを、熱間鋼帯製造ライン上を
搬送しながら保加熱する工程と、保加熱されたスラブを
搬送しながら板厚圧下プレスで高圧下する工程と、高圧
下されたスラブを搬送しながら圧延機で圧延して製品厚
さの圧延材に仕上げる工程と、この圧延材を急速冷却す
る工程と、冷却された圧延材を切断する工程と、切断さ
れた圧延材を巻き取る工程とを備えたことを特徴とする
熱間鋼帯の製造方法。1. A step of preserving and heating a slab having a thickness of 50 mm to 150 mm produced by a continuous casting facility while transporting it on a hot steel strip production line; A step of reducing the pressure by a rolling press, a step of rolling a slab subjected to a high pressure by a rolling mill to finish it into a rolled material having a product thickness, a step of rapidly cooling the rolled material, and a step of cooling the rolled material. And a step of winding the cut rolled material.
１５０ｍｍの板厚のスラブを、１コイル分の圧延材とし
て巻き取れる長さに切断する工程と、切断されたスラブ
を、熱間鋼帯製造ライン上を搬送しながらスラブ保加熱
炉で保加熱する工程と、保加熱されたスラブを、搬送し
ながら板厚圧下プレスで高圧下する工程と、板厚圧下プ
レスされたスラブを搬送しながら圧延機で圧延して製品
厚さの圧延材に仕上げる工程と、この圧延材を急速冷却
する工程と、急速冷却後に巻き取る工程とを備えたこと
を特徴とする熱間鋼帯の製造方法。2. A step of cutting a slab having a thickness of 50 mm to 150 mm manufactured by a continuous casting facility into a length that can be wound as a rolled material for one coil, and manufacturing the cut slab by a hot steel strip. A step of holding and heating in a slab holding and heating furnace while transporting on the line, a step of reducing the pressure of a heated and heated slab by a sheet thickness reduction press while transporting, and a rolling while transporting the sheet thickness reduction pressed slab A method for manufacturing a hot steel strip, comprising: a step of rolling by a mill to finish a rolled material having a product thickness; a step of rapidly cooling the rolled material; and a step of winding after rapid cooling.
を製造する連続鋳造設備と、熱間鋼帯製造ライン上を搬
送されるスラブを保加熱するスラブ保加熱炉と、保加熱
されたスラブを高圧下する板厚圧下プレスと、高圧下さ
れたスラブを製品厚さの圧延材に仕上げる１台の圧延機
と、圧延材を冷却する急速冷却装置と、圧延材を切断す
るせん断機と、切断された圧延材を巻き取る巻取機とを
順に配置したことを特徴とする熱間鋼帯の製造設備。3. A continuous casting facility for producing a slab having a thickness of 50 to 150 mm, a slab preheating furnace for preserving and heating the slab conveyed on the hot steel strip production line, A plate thickness reduction press to be lowered, a rolling mill for finishing the high-pressure slab into a rolled material having a product thickness, a rapid cooling device for cooling the rolled material, a shearing machine for cutting the rolled material, And a winder for winding the rolled material.
を製造する連続鋳造設備と、連続鋳造設備の出側に配置
されスラブを１コイル分の圧延材として巻き取る長さに
切断するせん断機と、熱間鋼帯製造ライン上を搬送され
るスラブを保加熱するスラブ保加熱炉と、保加熱された
スラブを高圧下する板厚圧下プレスと、板厚圧下プレス
された圧延材を製品厚さに仕上げる１台の圧延機と、仕
上圧延材を冷却する急速冷却装置と、急速冷却された圧
延材を巻き取る巻取機とを順に配置したことを特徴とす
る熱間鋼帯の製造設備。4. A continuous casting facility for producing a slab having a thickness of 50 mm to 150 mm, a shearing machine which is arranged on the output side of the continuous casting facility and cuts the slab into a length to be wound as a rolled material for one coil, A slab preheating furnace for preserving and heating slabs conveyed on the hot steel strip production line, a sheet thickness reduction press for reducing the pressure of the heated and heated slabs, and a rolled material that has been reduced in thickness to a product thickness. A hot steel strip manufacturing facility comprising: a rolling mill for finishing; a rapid cooling device for cooling a finished rolled material; and a winder for winding a rapidly cooled rolled material.
ブルウォーキングビーム式であり、板厚圧下プレスの下
流側に圧延材のたるみ分を滞留させるルーパーを備えた
ことを特徴とする請求項３又は４に記載の熱間鋼帯の製
造設備。5. The slab holding and heating furnace is a tunnel furnace or a double walking beam type, and has a looper for retaining slack of a rolled material on the downstream side of a plate thickness reduction press. 5. The hot steel strip manufacturing equipment according to 4.
を圧下する幅圧下プレス又は縦型圧延機と、圧延機の入
側に配置しスラブの板幅方向を圧下する縦圧延機とのい
ずれか一方又は両方を備えたことを特徴とする請求項３
または４に記載の熱間鋼帯の製造設備。6. A width reduction press or a vertical rolling mill for reducing the slab in the width direction of the slab before the thickness reduction press, and a vertical rolling mill arranged on the entry side of the rolling mill and reducing the slab in the width direction of the slab. 4. The method according to claim 3, further comprising one or both of the following.
Or the manufacturing equipment of the hot-rolled steel strip of 4.
度に保加熱するトンネル炉を備えたことを特徴とする請
求項３又は４に記載の熱間鋼帯の製造設備。7. The hot steel strip manufacturing equipment according to claim 3, further comprising a tunnel furnace disposed on the rolling mill entry side to keep the slab at a predetermined temperature.
され、スラブを切断するせん断機を更に備えた請求項３
に記載の熱間鋼帯の製造設備。8. The apparatus according to claim 3, further comprising a shearing machine disposed between the continuous casting facility and a tunnel furnace, for cutting a slab.
2. A manufacturing apparatus for a hot steel strip according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001018416A JP2002219501A (en) | 2001-01-26 | 2001-01-26 | Manufacturing method of hot steel strip and its manufacturing facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001018416A JP2002219501A (en) | 2001-01-26 | 2001-01-26 | Manufacturing method of hot steel strip and its manufacturing facilities |
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| JP2002219501A true JP2002219501A (en) | 2002-08-06 |
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| JP2001018416A Pending JP2002219501A (en) | 2001-01-26 | 2001-01-26 | Manufacturing method of hot steel strip and its manufacturing facilities |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185490A (en) * | 2004-12-27 | 2006-07-13 | Magnes:Kk | Information recording medium and its manufacturing method |
| JP2009501636A (en) * | 2005-07-19 | 2009-01-22 | アルベディ，ジョバンニ | Production method and plant for long steel products without interruption |
| JP2010531734A (en) * | 2007-07-04 | 2010-09-30 | 宝山鋼鉄股▲分▼有限公司 | Efficient and energy saving strip continuous casting and continuous rolling process |
| JP2011516268A (en) * | 2008-04-04 | 2011-05-26 | シーメンス・ファオアーイー・メタルズ・テクノロジーズ・ゲーエムベーハー | Method and apparatus for casting, rolling and complex equipment |
| JP2012213807A (en) * | 2012-06-20 | 2012-11-08 | Baoshan Iron & Steel Co Ltd | Efficient and energy-saved steel strip continuous casting and continuous rolling process |
| KR101510374B1 (en) | 2013-10-16 | 2015-04-07 | 동국제강 주식회사 | Heating method of semi-finished products for hot continuous rolling |
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2001
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185490A (en) * | 2004-12-27 | 2006-07-13 | Magnes:Kk | Information recording medium and its manufacturing method |
| JP2009501636A (en) * | 2005-07-19 | 2009-01-22 | アルベディ，ジョバンニ | Production method and plant for long steel products without interruption |
| JP2010531734A (en) * | 2007-07-04 | 2010-09-30 | 宝山鋼鉄股▲分▼有限公司 | Efficient and energy saving strip continuous casting and continuous rolling process |
| JP2011516268A (en) * | 2008-04-04 | 2011-05-26 | シーメンス・ファオアーイー・メタルズ・テクノロジーズ・ゲーエムベーハー | Method and apparatus for casting, rolling and complex equipment |
| US8453711B2 (en) | 2008-04-04 | 2013-06-04 | Siemens Vai Metals Technologies Gmbh | Process and apparatus for a combined casting and rolling installation |
| JP2012213807A (en) * | 2012-06-20 | 2012-11-08 | Baoshan Iron & Steel Co Ltd | Efficient and energy-saved steel strip continuous casting and continuous rolling process |
| KR101510374B1 (en) | 2013-10-16 | 2015-04-07 | 동국제강 주식회사 | Heating method of semi-finished products for hot continuous rolling |
| WO2015099288A1 (en) * | 2013-12-23 | 2015-07-02 | 주식회사 포스코 | Device and method for continuous casting/hot rolling |
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| US10286432B2 (en) | 2013-12-23 | 2019-05-14 | Posco | Continuous casting and rolling apparatus and method |
| CN105828978B (en) * | 2013-12-23 | 2019-06-07 | Posco公司 | Continuous casting rolling device and method |
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