JP2000197903A - Method for rolling steel sheet, roll for rolling steel sheet and rolling mill for steel sheet - Google Patents

Method for rolling steel sheet, roll for rolling steel sheet and rolling mill for steel sheet

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Publication number
JP2000197903A
JP2000197903A JP10370520A JP37052098A JP2000197903A JP 2000197903 A JP2000197903 A JP 2000197903A JP 10370520 A JP10370520 A JP 10370520A JP 37052098 A JP37052098 A JP 37052098A JP 2000197903 A JP2000197903 A JP 2000197903A
Authority
JP
Japan
Prior art keywords
steel sheet
rolling
roll
annular body
width
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.)
Withdrawn
Application number
JP10370520A
Other languages
Japanese (ja)
Inventor
Koichi Sakamoto
浩一 坂本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP10370520A priority Critical patent/JP2000197903A/en
Publication of JP2000197903A publication Critical patent/JP2000197903A/en
Withdrawn legal-status Critical Current

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  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve yield by decreasing cutting-off in width by fitting an annular body in one end part in the axial direction on the opposite sides of respective work rolls and executing rolling while restricting the width of the steel sheet with the annular bodies by shifting the work rolls respectively in the opposite directions. SOLUTION: The annular bodies 5 are fit into annular grooves 4 provide in the end part of an axial direction and pressed against the opposed work rolls 2 with pressing mechanisms 6. By shifting the work rolls 2 respectively in the opposite direction, the interval between the annular bodies 5 is made to coincide with the width of the steel sheet 1 and, by restricting both edge parts of the steel sheet 1 during rolling, width spread by which edge drop and width ununiformity are brought about is suppressed. The inside diameter of the annular body 5 is larger than the outside diameter of the groove 4 and the outside diameter is taken an not larger than the outside diameter of the roll 4. The material of the annular body is taken as hot tool steel or the like excellent in wear resistance and the surface is coated with a wear-resisting material. A lubricating oil supply system for supplying lubricating oil to the inner peripheral surface and side faces of the annular body 5 through distributing passages is connected and the wear of the annular bodies 5 and grooves 4 is suppressed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、熱間や冷間におけ
る鋼板の圧延技術に関し、特に、エッジドロップと幅変
動が少ない良好な鋼板形状が得られる圧延方法、圧延用
ロールおよび圧延機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot or cold steel sheet rolling technique, and more particularly to a rolling method, a rolling roll and a rolling mill capable of obtaining a good steel sheet shape with little edge drop and width fluctuation.

【0002】[0002]

【従来の技術】熱間や冷間における鋼板の圧延(以下、
「鋼板の圧延」という)においては、板幅方向の板厚分
布や圧延方向の板幅分布が均一になるように圧延をおこ
なうことが極めて重要である。
2. Description of the Related Art Hot and cold rolling of steel sheets (hereinafter referred to as "rolling")
In "rolling of steel sheet"), it is extremely important to perform rolling so that the thickness distribution in the width direction and the width distribution in the rolling direction become uniform.

【0003】図1は、従来の4段圧延機による圧延状況
を示す図で、同図(a)は圧延機の正面図、同図(b)
は圧延後の鋼板形状を示す断面図である。同図で、符号
1は鋼板、2はワークロール、3はバックアップロール
である。
FIG. 1 is a view showing a rolling state by a conventional four-high rolling mill. FIG. 1A is a front view of the rolling mill, and FIG.
FIG. 3 is a cross-sectional view showing the shape of a steel sheet after rolling. In the figure, reference numeral 1 denotes a steel plate, 2 denotes a work roll, and 3 denotes a backup roll.

【0004】図1(a)に示すように、鋼板1は上下に
配置したワークロール2およびバックアップロール3に
より圧延されるが、図1(b)に示すように、鋼板1の
両端部(図示のE部)の板厚が中央部に比べ薄い、いい
わゆるエッジドロップ現象が生じる。この様なエッジド
ロップ現象は、板端が自由であり拘束されないことやワ
ークロールなどの変形により発生する。
As shown in FIG. 1 (a), a steel sheet 1 is rolled by work rolls 2 and backup rolls 3 arranged vertically, and as shown in FIG. (E part) is thinner than the central part, that is, a so-called edge drop phenomenon occurs. Such an edge drop phenomenon occurs due to the free and unrestricted edge of the plate or deformation of a work roll or the like.

【0005】また、鋼板の圧延では、鋼板温度の長手方
向のばらつきや圧延前の鋼板形状の長手方向不揃いなど
により、鋼板幅が長手方向に不均一となる問題が生じ
る。
[0005] In the rolling of a steel sheet, there is a problem that the width of the steel sheet becomes non-uniform in the longitudinal direction due to variations in the steel sheet temperature in the longitudinal direction and irregularities in the shape of the steel sheet before rolling.

【0006】上記エッジドロップの防止策として、例え
ば、熱間圧延において、複数の圧延機から構成される仕
上圧延機の入側や仕上圧延機間に設けた幅圧下装置で鋼
板の幅圧下をおこない板端部の厚さを増加させる方法、
あるいは、上下のワークロールをクロスさせることによ
り、板端部のワークロール間の隙間が大きくなることを
利用し、板端部の厚さを増加させる方法などが実施され
ている。
As a measure for preventing the edge drop, for example, in hot rolling, the width of a steel sheet is reduced by a width reduction device provided on the entrance side of a finishing mill comprising a plurality of rolling mills or between finishing mills. How to increase the thickness of the plate edge,
Alternatively, a method of increasing the thickness of the plate end portion by making use of the fact that the gap between the work rolls at the plate end portion is increased by crossing the upper and lower work rolls has been implemented.

【0007】特開平6−126304号公報には、バッ
クアップロールの軸端部に段差を設け、ワークロールの
両軸端部にリング状液圧シリンダを挿着してワークロー
ルをバックアップ側に曲げることによりエッジドロップ
の減少をはかる圧延機が提示されている。
Japanese Patent Application Laid-Open No. 6-126304 discloses a method in which a step is provided at the shaft end of a backup roll, and a ring-shaped hydraulic cylinder is inserted into both shaft ends of the work roll to bend the work roll to the backup side. To reduce the edge drop.

【0008】鋼板幅不均一対策としては、仕上圧延機の
入側に設けた幅圧下装置により板幅を圧下制御する方法
がおこなわれている。
[0008] As a countermeasure against unevenness of the steel sheet width, a method of controlling the reduction of the sheet width by a width reduction device provided on the entrance side of the finishing mill has been performed.

【0009】また、エッジドロップや鋼板幅不均一の防
止策として、ワークロールに孔型を設けて鋼板幅を拘束
しながら圧延する方法も検討されているが、鋼板の幅や
厚に応じて孔型の寸法を自由に変更できない問題があ
り、実現していない。
As a measure to prevent edge drop and unevenness in the steel sheet width, a method in which a work roll is provided with a die and rolling is performed while restraining the steel sheet width has been studied. There is a problem that the dimensions of the mold cannot be changed freely, and it has not been realized.

【0010】[0010]

【発明が解決しようとする課題】上記公報などに開示さ
れた従来技術においても、エッジドロップや鋼板幅不均
一は依然として発生しており、寸法外れとなった板幅端
部は切断除去され歩留まりが低下するという問題があ
る。
In the prior arts disclosed in the above publications, edge drops and uneven width of the steel sheet still occur, and the end of the width of the steel sheet which is out of the dimension is cut and removed to increase the yield. There is a problem of lowering.

【0011】本発明の課題は、エッジドロップや鋼板幅
不均一を抑制し、幅切り捨てを減少して歩留まりの向上
が可能な鋼板圧延用ロール、圧延機ならびに圧延方法を
提供することにある。
An object of the present invention is to provide a roll, a rolling mill, and a rolling method for rolling a steel sheet, which can suppress edge drop and unevenness in the width of the steel sheet, reduce the width truncation, and improve the yield.

【0012】[0012]

【課題を解決するための手段】本発明は、上記課題を解
決するため、下記の(1) 〜(4) を要旨とする。
The present invention has the following aspects (1) to (4) to solve the above-mentioned problems.

【0013】(1) 鋼板を挟んで上下に対向した一対のワ
ークロールを軸方向にシフトしておこなう鋼板の圧延方
法であって、上記ワークロールのそれぞれ反対側の一方
の軸方向端部に環状体を嵌入し、上記ワークロールをそ
れぞれ逆方向にシフトさせて上記環状体で鋼板の幅を拘
束しながら圧延をおこなうことを特徴とする鋼板圧延方
法。
(1) A method of rolling a steel sheet by shifting a pair of work rolls vertically opposed to each other across a steel sheet in an axial direction, wherein a ring is formed at one axial end of each of the opposite side of the work roll. A method of rolling a steel sheet, comprising inserting a body, shifting the work rolls in opposite directions, and performing rolling while restraining the width of the steel sheet by the annular body.

【0014】(2) 鋼板の圧延に用いるロールであって、
ロールの一方の軸方向端部に周方向に設けた溝と、該溝
に嵌入した環状体と、該環状体をその外周面から押圧す
る押さえ機構を有することを特徴とする鋼板圧延用ロー
ル。
(2) A roll used for rolling a steel sheet,
A roll for rolling a steel sheet, comprising: a groove provided circumferentially at one axial end of the roll; an annular body fitted into the groove; and a pressing mechanism for pressing the annular body from an outer peripheral surface thereof.

【0015】(3) ロールの一方の軸方向端面に、環状体
の外周面および内周面に流通路を介して潤滑油を供給す
る潤滑油供給装置を接続したことを特徴とする上記(2)
項に記載の鋼板圧延用ロール。
(3) A lubricating oil supply device for supplying lubricating oil to the outer peripheral surface and the inner peripheral surface of the annular body through a flow passage is connected to one axial end surface of the roll. )
Rolls for rolling a steel sheet according to the above item.

【0016】(4) 上記(2) または(3) 項に記載の鋼板圧
延用ロールを上下に対向し軸方向にシフト可能に配置
し、かつ、環状体が互いに軸方向に反対側となるように
配置したことを特徴とする鋼板用圧延機。
(4) The steel sheet rolling rolls described in the above item (2) or (3) are arranged so as to be vertically opposed and shiftable in the axial direction, and the annular bodies are opposite to each other in the axial direction. A rolling mill for a steel sheet, wherein the rolling mill is arranged in a roll.

【0017】[0017]

【発明の実施の形態】図2は、本発明方法を実施する4
段圧延機の一例の模式図で、同図(a)は正面図、同図
(b)は側面図である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
It is a schematic diagram of an example of a tandem rolling mill, wherein FIG. 1A is a front view and FIG. 1B is a side view.

【0018】図3は、本発明方法を実施する2段圧延機
の一例の模式図で、同図(a)は正面図、同図(b)は
側面図である。
FIG. 3 is a schematic view of an example of a two-high rolling mill for implementing the method of the present invention, wherein FIG. 3 (a) is a front view and FIG. 3 (b) is a side view.

【0019】図2および図3で、符号4は溝、5は環状
体、6は押さえ機構で、図1と同じ要素は同一の符号で
示す。
2 and 3, reference numeral 4 is a groove, 5 is an annular body, 6 is a pressing mechanism, and the same elements as those in FIG. 1 are denoted by the same reference numerals.

【0020】図2および図3において、本発明の鋼板圧
延方法は、鋼板1の上下に対に配置したワークロール2
のそれぞれ反対側の一方の軸方向端部に環状体5を回動
自在に嵌入し、そのワークロール2をそれぞれ逆方向に
シフトさせて上記環状体5間の間隔を鋼板1の幅にほぼ
一致させ、上記環状体5で鋼板1の幅を拘束しながら圧
延をおこなうことを特徴とする。ワークロール2をシフ
トすることにより環状体5間の間隔を自由に調整するこ
とができるので、広範囲の板幅に対応することができ
る。環状体5は、例えば、後述するように、軸方向端部
に設けた環状の溝4に嵌入し、かつ、押さえ機構6で押
圧されるように設けられており、環状体5の外径と内径
および溝4の溝底径を適切に選択することにより、常に
その環状体5を相対するワークロール2に押し付けるこ
とができる。したがって、本発明方法によれば、鋼板の
両縁部は圧延中、常に環状体に拘束されており、エッジ
ドロップや幅不均一をもたらす幅拡がりが抑制される。
2 and 3, the method of rolling a steel sheet according to the present invention employs a work roll 2 arranged in pairs above and below a steel sheet 1.
An annular body 5 is rotatably fitted to one axial end of each of the opposite sides, and the work rolls 2 are respectively shifted in opposite directions so that the interval between the annular bodies 5 substantially matches the width of the steel plate 1. The rolling is performed while restricting the width of the steel plate 1 by the annular body 5. By shifting the work roll 2, the interval between the annular bodies 5 can be freely adjusted, so that a wide range of plate widths can be accommodated. For example, as described later, the annular body 5 is provided so as to be fitted into an annular groove 4 provided at an axial end and pressed by a holding mechanism 6. By appropriately selecting the inner diameter and the groove bottom diameter of the groove 4, the annular body 5 can always be pressed against the opposing work roll 2. Therefore, according to the method of the present invention, both edges of the steel sheet are constantly constrained by the annular body during rolling, and the width expansion that causes edge drop and uneven width is suppressed.

【0021】図4は、本発明の鋼板圧延用ロールをチョ
ックに組み込んだ状態を模式的に示す正面図である。同
図で、符号2は鋼板圧延用ロール、7はロールチョッ
ク、8は支持部、9は押さえローラ、10は進退機構
で、図2と同じ要素は同一の符号で示す。
FIG. 4 is a front view schematically showing a state in which the steel sheet rolling roll of the present invention is incorporated in a chock. 2, reference numeral 2 denotes a roll for rolling a steel sheet, 7 denotes a roll chock, 8 denotes a supporting portion, 9 denotes a pressing roller, 10 denotes an advance / retreat mechanism, and the same elements as those in FIG. 2 are denoted by the same reference numerals.

【0022】図4に示すように、本発明の鋼板圧延用ロ
ール2(以下、「ロール」ともいう)は、そのロールの
一方の軸方向端部に周方向に設けた環状の溝4と、その
溝4に回動自在に嵌入した環状体5と、その環状体5を
その外周面から押圧する押さえ機構6を有することを特
徴とする。押さえ機構6は、ロールチョック7に装着さ
れた支持部8と、その支持部8に取り付けられ押さえロ
ーラ9を備えた進退機構10を有する。進退機構10
は、環状体5の外径と内径および溝4の溝底径を適切に
選択することにより、押さえローラ9を介して環状体5
をその外面から押圧して軸半径方向に動かして偏心さ
せ、鋼板の板厚に応じて環状体5の突き出し量Xを調整
することができる。したがって、本発明の鋼板圧延用ロ
ール2によれば、環状体5の突き出し量Xを変更するこ
とができるので、鋼板の板厚が変化しても環状体5で鋼
板の縁部を拘束することができる。なお、進退機構10
は、押さえローラ9を進退することができれば特に限定
しないが、例えば油圧シリンダやエアシリンダを用いる
ことができる。
As shown in FIG. 4, a roll 2 for rolling a steel sheet (hereinafter, also referred to as a “roll”) according to the present invention includes an annular groove 4 provided at one axial end of the roll in a circumferential direction. An annular body 5 rotatably fitted in the groove 4 and a pressing mechanism 6 for pressing the annular body 5 from its outer peripheral surface are provided. The holding mechanism 6 has a support portion 8 mounted on the roll chock 7 and an advance / retreat mechanism 10 provided with a holding roller 9 attached to the support portion 8. Retract mechanism 10
By appropriately selecting the outer diameter and inner diameter of the annular body 5 and the groove bottom diameter of the groove 4, the annular body 5
Is pressed from its outer surface and moved eccentrically by moving it in the radial direction of the shaft, so that the protrusion amount X of the annular body 5 can be adjusted according to the thickness of the steel plate. Therefore, according to the steel sheet rolling roll 2 of the present invention, the protrusion amount X of the annular body 5 can be changed, so that even if the thickness of the steel sheet changes, the annular body 5 restrains the edge of the steel sheet. Can be. The reciprocating mechanism 10
Although there is no particular limitation as long as the pressing roller 9 can be moved forward and backward, for example, a hydraulic cylinder or an air cylinder can be used.

【0023】図5は環状体の構造例を模式的に示す図
で、同図(a)は正面図、同図(b)は側面図である。
符号15は半割状部材、16は固定具で、図3と同じ要
素は同一の符号で示す。
FIGS. 5A and 5B are views schematically showing an example of the structure of the annular body, wherein FIG. 5A is a front view and FIG. 5B is a side view.
Reference numeral 15 denotes a half-split member, 16 denotes a fixture, and the same elements as those in FIG. 3 are denoted by the same reference numerals.

【0024】図5に示すように、環状体5は、2分割さ
れた半割状部材15で構成され、その半割状部材15は
固定具16で固定される。図4で、環状体5の内径は溝
4の外径より大きく、また、通常、環状体の外径はロー
ル2の外径以下とする。なお、図3のように2段圧延機
の場合には、環状体の外径はロール2の外径より大きく
してもよい。環状体の材質は耐摩耗性に優れた熱間工具
鋼等とするのがよい。また、環状体の表面に耐摩耗性に
優れた材料をコーティングしてもよい。なお、図4で、
溝4の表面には環状体との摺動摩耗を抑制するため耐摩
耗材料をコーティングするのがよい。環状体や溝のコー
ティングは、CrやNiなどの単体めっきや合金めっき
あるいはWC+CoやMoなどの溶射などによりおこな
うことができる。
As shown in FIG. 5, the annular body 5 is constituted by a half-split member 15 divided into two parts, and the half-split member 15 is fixed by a fixture 16. In FIG. 4, the inner diameter of the annular body 5 is larger than the outer diameter of the groove 4, and the outer diameter of the annular body is usually equal to or less than the outer diameter of the roll 2. In the case of a two-high rolling mill as shown in FIG. 3, the outer diameter of the annular body may be larger than the outer diameter of the roll 2. The material of the annular body is preferably hot tool steel or the like having excellent wear resistance. Further, the surface of the annular body may be coated with a material having excellent wear resistance. In FIG. 4,
The surface of the groove 4 is preferably coated with a wear-resistant material to suppress sliding wear with the annular body. The coating of the annular body or the groove can be performed by simple plating of Cr or Ni, alloy plating, thermal spraying of WC + Co, Mo, or the like.

【0025】図6は、本発明の好適態様に係る潤滑油供
給要領を模式的に示す概要図である。符号17は潤滑油
供給装置、18は流通路、19はロータリージョイント
で、図4と同じ要素は同一の符号で示す。
FIG. 6 is a schematic diagram schematically showing a lubricating oil supply procedure according to a preferred embodiment of the present invention. Reference numeral 17 denotes a lubricating oil supply device, 18 denotes a flow passage, 19 denotes a rotary joint, and the same elements as those in FIG.

【0026】図6に示すように、本発明の鋼板圧延用ロ
ール2は、その軸端面に、環状体5の内周面や側面に流
通路18を介して潤滑油を供給する潤滑油供給装置17
を接続して設けるのが好ましい。潤滑油を供給すること
により、環状体5や溝4の摩耗を抑制することができ
る。潤滑油の供給はロール端面に設けたロータリージョ
イント19を介しておこなうことができる。潤滑油は合
成油や動植物油等の圧延油でよい。
As shown in FIG. 6, the roll 2 for rolling a steel sheet according to the present invention supplies a lubricating oil to a shaft end face of the roll 5 for supplying lubricating oil to an inner peripheral surface or a side face of the annular body 5 through a flow passage 18. 17
Are preferably connected. By supplying the lubricating oil, wear of the annular body 5 and the groove 4 can be suppressed. The supply of the lubricating oil can be performed via a rotary joint 19 provided on the roll end surface. The lubricating oil may be a rolling oil such as a synthetic oil or animal or vegetable oil.

【0027】次ぎに、本発明の鋼板用圧延機を図2およ
び図3で説明する。図2、図3に示すように、本発明の
鋼板用圧延機は、鋼板1を挟んで上下に対向し軸方向に
シフト可能とした一対のワークロール2を備え、そのワ
ークロール2は、一方の軸方向端部に周方向に設けた環
状の溝4と、その溝4に嵌入した環状体5と、その環状
体5をその外周面から押圧する押さえ機構6を有し、そ
の環状体5は互いに軸方向に反対側となるように構成さ
れる。好ましくは、さらに、ワークロール2の軸端面
に、図6に示すように、環状体5の外周面や内周面に流
通路18を介して潤滑油を供給する潤滑油供給装置17
を接続して設ける。
Next, the rolling mill for steel sheets of the present invention will be described with reference to FIGS. As shown in FIGS. 2 and 3, the rolling mill for a steel sheet according to the present invention includes a pair of work rolls 2 that are vertically opposed to each other with the steel sheet 1 interposed therebetween and are capable of being shifted in the axial direction. An annular groove 4 provided circumferentially at an axial end of the annular member 5, an annular body 5 fitted in the groove 4, and a pressing mechanism 6 for pressing the annular body 5 from the outer peripheral surface thereof. Are configured to be axially opposite to each other. Preferably, a lubricating oil supply device 17 for supplying lubricating oil to the outer peripheral surface and the inner peripheral surface of the annular body 5 through a flow passage 18 as shown in FIG.
Are connected and provided.

【0028】なお、本発明の鋼板圧延方法、鋼板圧延用
ロールならびに鋼板用圧延機は、特に熱間鋼板の圧延に
適用すると好適である。
The method for rolling a steel sheet, the roll for rolling a steel sheet, and the rolling mill for a steel sheet according to the present invention are suitably applied particularly to rolling of a hot steel sheet.

【0029】[0029]

【実施例】ワークロールシフト機能を有する2基の4段
圧延機(ワークロール:直径200mm、胴長400m
m、最大シフト量75mmバックアップロール:直径3
50mm、胴長400mm)をタンデムに配置した2ス
タンド熱間圧延設備で、圧延材に1000℃の低炭素鋼
板(C:0.04重量%、幅:250mm、厚:9m
m、長さ:100m)を用いて厚み圧下の熱間圧延をお
こない、各スタンド圧延後の鋼板のエッジドロップと長
手方向の幅変動を調査した。厚み圧下スケジュールは、
第1スタンドで9.0→5.0mm、第2スタンドで
5.0→3.2mmとした。表1に試験条件を示す。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Two four-high rolling mills having a work roll shift function (work roll: diameter 200 mm, body length 400 m)
m, maximum shift amount 75 mm Backup roll: diameter 3
A two-stand hot-rolling facility in which 50 mm and a body length of 400 mm are arranged in tandem, and the rolled material is a low-carbon steel plate of 1000 ° C. (C: 0.04% by weight, width: 250 mm, thickness: 9 m)
m, length: 100 m), hot rolling was performed under a thickness reduction, and edge drop and longitudinal width fluctuation of the steel sheet after each stand rolling were investigated. The thickness reduction schedule is
The distance was changed from 9.0 to 5.0 mm in the first stand, and from 5.0 to 3.2 mm in the second stand. Table 1 shows the test conditions.

【0030】[0030]

【表1】 [Table 1]

【0031】表1に示すように、ケース1では第1スタ
ンドに、ケース2では第1スタンドと第2スタンドに、
図2に示す基本構成の軸端部に環状体5を有するワーク
ロール2を備えた4段圧延機を配置し、ワークロールを
軸方向にシフトして上下ワークロールに設けた環状体の
間隔を250mmに設定した。また、図6に示すよう
に、ワークロール2の軸端面にロータリージョイント1
9を介して潤滑油供給装置17を接続し、流通路を介し
て環状体の外面と内面に潤滑油を供給した。なお、ケー
ス1の第2スタンドには、図1に示す基本構成の従来の
4段圧延機を配置した。ケース3の従来例では、第1ス
タンドと第2スタンドに図1に示す基本構成の従来の4
段圧延機を用いた。表2にワークロールに設けた環状
体、溝ならびに押さえ機構の主仕様を示す。
As shown in Table 1, in case 1 the first stand, in case 2 the first and second stands,
A four-high rolling mill provided with a work roll 2 having an annular body 5 at the shaft end of the basic configuration shown in FIG. 2 is arranged, and the work roll is shifted in the axial direction to reduce the interval between the annular bodies provided on the upper and lower work rolls. It was set to 250 mm. As shown in FIG. 6, a rotary joint 1 is attached to the shaft end face of the work roll 2.
9, a lubricating oil supply device 17 was connected to supply lubricating oil to the outer surface and the inner surface of the annular body via a flow passage. Note that a conventional four-high rolling mill having the basic configuration shown in FIG. In the conventional example of the case 3, the first stand and the second stand are provided with the basic structure shown in FIG.
A rolling mill was used. Table 2 shows the main specifications of the annular body, groove and holding mechanism provided on the work roll.

【0032】[0032]

【表2】 [Table 2]

【0033】表3に各スタンド圧延後の鋼板のエッジド
ロップと長手方向の幅変動量を従来例と比較して示す。
なお、エッジドロップは、板中央部に比べ板厚が減少し
ている部分の板端面から幅方向における長さで評価し
た。幅変動は、長手方向における最大幅と最小幅の差の
幅変動量で評価した。
Table 3 shows the edge drop and the width variation in the longitudinal direction of the steel sheet after each stand rolling in comparison with the conventional example.
In addition, the edge drop was evaluated by the length in the width direction from the plate end surface in the portion where the plate thickness was reduced as compared with the central portion of the plate. The width fluctuation was evaluated by the width fluctuation amount of the difference between the maximum width and the minimum width in the longitudinal direction.

【0034】[0034]

【表3】 [Table 3]

【0035】表3に示すように、ケース1とケース2の
本発明例は、従来例に比べエッジドロップならびに幅変
動が大幅に減少した。ケース2は、第1スタンドと第2
スタンドの双方の圧延で幅拘束が実施され、第2スタン
ド圧延後ではケース1よりさらにエッジドロップと幅変
動が改善された。
As shown in Table 3, in the case of the present invention in case 1 and case 2, the edge drop and the width fluctuation were significantly reduced as compared with the conventional example. Case 2 consists of the first stand and the second
Width restraint was performed in both rolling of the stand, and after the second stand rolling, edge drop and width variation were further improved compared to Case 1.

【0036】[0036]

【発明の効果】本発明によれば、板幅を拘束した圧延が
実現し、幅拡がりが抑制され、エッジドロップや長手方
向の幅変動が減少し、良好な鋼板形状が得られる。した
がって、幅端部の切り捨てが減少し、歩留まりの向上な
ど経済的効果が得られる。
According to the present invention, rolling in which the sheet width is constrained is realized, width expansion is suppressed, edge drop and width fluctuation in the longitudinal direction are reduced, and a good steel sheet shape can be obtained. Therefore, truncation at the width end is reduced, and an economic effect such as an improvement in yield is obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】従来の4段圧延機による圧延状況を示す図で、
同図(a)は圧延機の正面図、同図(b)は鋼板形状を
示す断面図である。
FIG. 1 is a diagram showing a rolling state by a conventional four-high rolling mill;
FIG. 1A is a front view of a rolling mill, and FIG. 1B is a cross-sectional view showing a shape of a steel plate.

【図2】本発明方法を実施する4段圧延機の一例の模式
図で、同図(a)は正面図、同図(b)は側面図であ
る。
FIGS. 2A and 2B are schematic views of an example of a four-high rolling mill for implementing the method of the present invention, wherein FIG. 2A is a front view and FIG. 2B is a side view.

【図3】本発明方法を実施する2段圧延機の一例の模式
図で、同図(a)は正面図、同図(b)は側面図であ
る。
FIGS. 3A and 3B are schematic views of an example of a two-high rolling mill for implementing the method of the present invention, wherein FIG. 3A is a front view and FIG. 3B is a side view.

【図4】本発明の鋼板圧延用ロールをチョックに組み込
んだ状態を模式的に示す正面図である。
FIG. 4 is a front view schematically showing a state in which the steel sheet rolling roll of the present invention is incorporated in a chock.

【図5】環状体の構造例を模式的に示す図で、同図
(a)は正面図、同図(b)は側面図である。
FIGS. 5A and 5B are diagrams schematically showing an example of the structure of an annular body, wherein FIG. 5A is a front view and FIG. 5B is a side view.

【図6】本発明の好適態様に係る潤滑油供給要領を模式
的に示す概要図である。
FIG. 6 is a schematic diagram schematically showing a lubricating oil supply procedure according to a preferred embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1:鋼板、2:ワークロール(鋼板圧延用ロール)、
3:バックアップロール、4:溝、5:環状体、6:押
さえ機構、7:ロールチョック、8:支持部、9:押さ
えローラ、10:進退機構、15:半割状部材、16:
固定具、17:潤滑油供給装置、18:流通路、19:
ロータリージョイント。
1: steel plate, 2: work roll (roll for steel plate rolling),
3: backup roll, 4: groove, 5: annular body, 6: pressing mechanism, 7: roll chock, 8: support, 9: pressing roller, 10: forward / backward mechanism, 15: half-split member, 16:
Fixture, 17: lubricating oil supply device, 18: flow passage, 19:
Rotary joint.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 鋼板を挟んで上下に対向した一対のワー
クロールを軸方向にシフトしておこなう鋼板の圧延方法
であって、上記ワークロールのそれぞれ反対側の一方の
軸方向端部に環状体を嵌入し、上記ワークロールをそれ
ぞれ逆方向にシフトさせて上記環状体で鋼板の幅を拘束
しながら圧延をおこなうことを特徴とする鋼板圧延方
法。
1. A method for rolling a steel sheet by shifting a pair of work rolls vertically opposed to each other across a steel sheet in an axial direction, wherein an annular body is provided at one axial end of each of the opposite side of the work roll. And rolling the steel sheet while restraining the width of the steel sheet with the annular body by shifting the work rolls in opposite directions.
【請求項2】 鋼板の圧延に用いるロールであって、ロ
ールの一方の軸方向端部に周方向に設けた溝と、該溝に
嵌入した環状体と、該環状体をその外周面から押圧する
押さえ機構を有することを特徴とする鋼板圧延用ロー
ル。
2. A roll used for rolling a steel sheet, a groove provided in one axial end of the roll in a circumferential direction, an annular body fitted in the groove, and pressing the annular body from its outer peripheral surface. A roll for rolling a steel sheet, comprising:
【請求項3】 ロールの一方の軸方向端面に、環状体の
内周面および側面に流通路を介して潤滑油を供給する潤
滑油供給装置を接続したことを特徴とする請求項2に記
載の鋼板圧延用ロール。
3. The lubricating oil supply device for supplying lubricating oil to the inner peripheral surface and the side surface of the annular body through a flow passage is connected to one axial end surface of the roll. Rolls for rolling steel plates.
【請求項4】 請求項2または3に記載の鋼板圧延用ロ
ールを上下に対向し軸方向にシフト可能に配置し、か
つ、環状体が互いに軸方向に反対側となるように配置し
たことを特徴とする鋼板用圧延機。
4. The steel sheet rolling roll according to claim 2 or 3, wherein the rolls are vertically opposed to each other and are arranged so as to be axially shiftable, and the annular bodies are arranged so as to be opposite to each other in the axial direction. Characteristic rolling mill for steel sheets.
JP10370520A 1998-12-25 1998-12-25 Method for rolling steel sheet, roll for rolling steel sheet and rolling mill for steel sheet Withdrawn JP2000197903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10370520A JP2000197903A (en) 1998-12-25 1998-12-25 Method for rolling steel sheet, roll for rolling steel sheet and rolling mill for steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10370520A JP2000197903A (en) 1998-12-25 1998-12-25 Method for rolling steel sheet, roll for rolling steel sheet and rolling mill for steel sheet

Publications (1)

Publication Number Publication Date
JP2000197903A true JP2000197903A (en) 2000-07-18

Family

ID=18497130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10370520A Withdrawn JP2000197903A (en) 1998-12-25 1998-12-25 Method for rolling steel sheet, roll for rolling steel sheet and rolling mill for steel sheet

Country Status (1)

Country Link
JP (1) JP2000197903A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101844156A (en) * 2010-04-27 2010-09-29 中冶南方工程技术有限公司 Emulsified liquid side fluid channeling blockage device
JP2013226572A (en) * 2012-04-25 2013-11-07 Mitsubishi-Hitachi Metals Machinery Inc Multistage rolling mill including work roll shift function
CN117102239A (en) * 2023-08-01 2023-11-24 杭州富阳立利冷轧有限公司 Cold rolling mill capable of automatically compensating cold rolling thickness

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101844156A (en) * 2010-04-27 2010-09-29 中冶南方工程技术有限公司 Emulsified liquid side fluid channeling blockage device
CN101844156B (en) * 2010-04-27 2011-12-28 中冶南方工程技术有限公司 Emulsified liquid side fluid channeling blockage device
JP2013226572A (en) * 2012-04-25 2013-11-07 Mitsubishi-Hitachi Metals Machinery Inc Multistage rolling mill including work roll shift function
CN117102239A (en) * 2023-08-01 2023-11-24 杭州富阳立利冷轧有限公司 Cold rolling mill capable of automatically compensating cold rolling thickness
CN117102239B (en) * 2023-08-01 2024-02-13 杭州富阳立利冷轧有限公司 Cold rolling mill capable of automatically compensating cold rolling thickness

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