JPH0584507A - Method for controlling hydraulic driving type side guide for roughing mill - Google Patents

Method for controlling hydraulic driving type side guide for roughing mill

Info

Publication number
JPH0584507A
JPH0584507A JP24965591A JP24965591A JPH0584507A JP H0584507 A JPH0584507 A JP H0584507A JP 24965591 A JP24965591 A JP 24965591A JP 24965591 A JP24965591 A JP 24965591A JP H0584507 A JPH0584507 A JP H0584507A
Authority
JP
Japan
Prior art keywords
pressure
rolled
side guide
hydraulic oil
guiding
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.)
Granted
Application number
JP24965591A
Other languages
Japanese (ja)
Other versions
JP2988759B2 (en
Inventor
Hideyuki Nikaido
英幸 二階堂
Makoto Shitomi
誠 侍留
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.)
JFE Steel Corp
IHI Corp
Original Assignee
IHI Corp
Kawasaki Steel Corp
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 IHI Corp, Kawasaki Steel Corp filed Critical IHI Corp
Priority to JP3249655A priority Critical patent/JP2988759B2/en
Publication of JPH0584507A publication Critical patent/JPH0584507A/en
Application granted granted Critical
Publication of JP2988759B2 publication Critical patent/JP2988759B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

PURPOSE:To straighten bend while preventing the generation of flaws and impact to guides by smoothly guiding the rear end part of a bent material to be rolled. CONSTITUTION:The pressure of hydraulic oil to a driving cylinder 4 is set at two high and low steps or more with a relief valve 15 and pressure tank 17, the high pressure side is taken as pressure that bends can be straightened, the low side is taken as necessary pressure for guiding. And also the guides are made so that they are opened in accordance with increase of supporting reaction force Z, high pressure is used in the steady part of the material to be rolled and guiding is executed by minimizing clearance between the material to be rolled and the guide. Pressure is switched to low pressure with a valve 16 in the unsteady part of the rear end and, after that, when increase of opening degree of guide is in excess of allowance, guiding is done by making so that pressure is switched to high pressure again.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、熱間連続圧延機の粗
圧延機列における粗ミル入側の油圧駆動方式サイドガイ
ドの制御方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a hydraulically driven side guide on a rough mill entry side in a rough rolling mill train of a hot continuous rolling mill.

【0002】[0002]

【従来の技術】熱間連続圧延機の粗圧延機列は、被圧延
材の幅制御を行う必要から一般にエッジャミルとその出
側に配設した水平ミルによりタンデム圧延を行うミル群
から構成されている。そして、エッジャミル入側にはサ
イドガイドが設置されており、その開度を被圧延材の幅
よりも30〜50mm広く位置設定しておき、進入してくる被
圧延材をミル中心に誘導するとともに斜行を防止してい
た。しかし、被圧延材の進入がスムーズにできるようサ
イドガイドの開度を広く設定したまま通板するため、ガ
イディング効果が満足なものとは言えなかった。
2. Description of the Related Art A rough rolling mill train of a hot continuous rolling mill is generally composed of an edger mill and a group of mills for tandem rolling by a horizontal mill arranged at the outlet side thereof because it is necessary to control the width of a material to be rolled. There is. A side guide is installed on the entrance side of the edger mill, and its opening is set 30 to 50 mm wider than the width of the material to be rolled, and the incoming material to be rolled is guided to the center of the mill. It was preventing skew. However, the guiding effect cannot be said to be satisfactory because the plate is passed with the opening of the side guide set wide so that the rolled material can smoothly enter.

【0003】そこで近年、通板性の向上のために油圧駆
動方式のサイドガイドも開発され(日本鉄鋼協会、第51
回ホットストリップ分科会51−4「薄物通板性向上対
策」)、被圧延材がサイドガイド内に進入すると被圧延
材側縁との間隙が小さくなるように締込み、積極的にガ
イディングして通板させている。このようなサイドガイ
ドの列を図6に示す。図において1は被圧延材で矢印X
方向に、エッジャミル2に向かって進行する。そしてエ
ッジャミル2の入側にはサイドガイド3が設置されてい
る。このサイドガイド3は油圧シリンダ4によって駆動
され、図のA−A矢視である図7に示すように、ピニオ
ンスタンド5内のピニオン6、ラックビーム7を介して
圧延ライン中心(ミル中心)Y−Yに対し左右対称にガ
イド30、30が開閉することにより、被圧延材のセンタリ
ングが可能となっている。
Therefore, in recent years, a hydraulically driven side guide has also been developed to improve the sheet passing property (Japan Iron and Steel Institute, No. 51).
Hot Strip Subcommittee 51-4 "Measures for improving thin plate threading"), when the rolled material enters the side guide, tighten so that the gap between the rolled material side edge becomes smaller and positively guide the material. Have been passed through. A row of such side guides is shown in FIG. In the figure, 1 is a material to be rolled and is indicated by an arrow X.
Direction towards the edger mill 2. A side guide 3 is installed on the entrance side of the edger mill 2. This side guide 3 is driven by a hydraulic cylinder 4, and as shown in FIG. 7 which is a view taken along the line AA in FIG. 7, the rolling line center (mill center) Y is passed through a pinion 6 in a pinion stand 5 and a rack beam 7. Centering of the rolled material is possible by opening and closing the guides 30, 30 symmetrically with respect to -Y.

【0004】この場合の油圧回路の例をさらに図7によ
り説明すると、作動油は方向切換用電磁弁10を介して油
圧シリンダ4の押し側41、または引き側42を加圧する。
そして11、11はシリンダ4内に作動油を封じ込めてガイ
ド30、30の開度を維持するためのパイロットチェック弁
であり、12は被圧延材の支持反力Zが過大な場合等に機
械を保護するためのリリーフ弁である。
An example of the hydraulic circuit in this case will be further described with reference to FIG. 7. The hydraulic oil pressurizes the pushing side 41 or the pulling side 42 of the hydraulic cylinder 4 via the direction switching solenoid valve 10.
Reference numerals 11 and 11 denote pilot check valves for containing the hydraulic oil in the cylinder 4 to maintain the opening of the guides 30, 30. Reference numeral 12 denotes the machine when the supporting reaction force Z of the material to be rolled is excessive. It is a relief valve for protection.

【0005】[0005]

【発明が解決しようとする課題】前述のように油圧駆動
方式のサイドガイドは、被圧延材の進入後にガイドの開
度を締込んでセンタリングができるため、被圧延材に曲
がりのない場合はガイディングが良好で問題がないが、
通常被圧延材は後端部で相当な曲がりが発生しているも
のが多い。従って、後端部が曲がっている被圧延材を、
サイドガイドを締込んだまま通過させようとすると、エ
ッジャミルと図示しない水平ミルの過大な力で無理に引
込まれ、被圧延材側縁に大きなキズがついたり、極端な
場合は被圧延材が破断することもあり、またサイドガイ
ドを破損させる危険もある。
As described above, the hydraulically driven side guides can be centered by tightening the opening of the guides after the material to be rolled enters, so that when the material to be rolled is not bent, The ding is good and there are no problems,
Usually, many rolled materials have a considerable amount of bending at the rear end. Therefore, the material to be rolled whose rear end is bent,
If you try to pass the side guide while tightening it, it will be forcibly pulled in by the excessive force of the edger mill and a horizontal mill (not shown), and the side edges of the material to be rolled will be severely scratched or the material to be rolled will break in extreme cases. There is also a risk of damaging the side guides.

【0006】この対策としては、サイドガイドのリリー
フ弁の圧力設定を適正に行うより他に方法がなかった
が、被圧延材後端部の曲がり量に対応する適正な圧力を
設定することは容易ではなく、設定圧力が小さすぎると
ガイディングの効果がなく、逆に大きすぎると前述の問
題は解決できない。この発明は、粗ミル入側の油圧駆動
方式サイドガイドにおける前述の如き課題を解決し、被
圧延材のセンタリングが正確に行なえるのみならず、被
圧延材の後端部に曲がりがあっても確実なガイディング
が可能なサイドガイドの制御方法を提供することを目的
とする。
As a countermeasure against this, there is no other method than properly setting the pressure of the relief valve of the side guide, but it is easy to set an appropriate pressure corresponding to the bending amount of the rear end of the rolled material. If the set pressure is too small, the guiding effect will not be obtained, and conversely if it is too large, the above problem cannot be solved. The present invention solves the above-mentioned problems in the hydraulically driven side guide on the entry side of the rough mill, and not only can the centering of the rolled material be performed accurately, but even if the trailing end of the rolled material has a bend. It is an object of the present invention to provide a side guide control method capable of reliable guiding.

【0007】[0007]

【課題を解決するための手段】この発明は、熱間連続圧
延機の粗圧延機における粗ミル入側の油圧駆動方式サイ
ドガイドの制御方法であって、油圧回路の作動油圧力を
少なくとも被圧延材の曲がりの矯正が可能な高圧とガイ
ディングに必要な支持反力に見合う低圧の2段階以上に
設定可能とするとともに、作動油の設定圧力が低圧時に
はサイドガイドを前記支持反力の増加に伴って開方向に
移動可能とし、被圧延材の定常部は作動油圧力を前記高
圧に設定するとともに被圧延材側縁との間隙を所定の僅
少値としてガイディングさせ、曲がりのある被圧延材後
端近傍の非定常部は作動油の設定圧力を前記低圧に切換
え、かつサイドガイドの開度が被圧延材後端部の曲がり
量に応じてあらかじめ定めた許容量を越えたときに作動
油の設定圧力を前記高圧に切換えてガイディングさせる
ようにして前記従来の技術の課題を解決し、さらに、前
記作動油の設定圧力が低圧時の、被圧延材の幅に対する
サイドガイドの開度増加許容量を被圧延材後端部曲がり
量の30〜90%に設定することにより、一層効果的なガイ
ディングが達成できるようにしたものである。
SUMMARY OF THE INVENTION The present invention is a method for controlling a hydraulically driven side guide on a rough mill entry side in a rough rolling mill of a hot continuous rolling mill, in which at least hydraulic oil pressure in a hydraulic circuit is rolled. It is possible to set high pressure to correct bending of the material and low pressure corresponding to the supporting reaction force required for guiding in two or more stages. When the set pressure of hydraulic oil is low, the side guide increases the supporting reaction force. Therefore, the stationary part of the material to be rolled is set to have the hydraulic oil pressure at the high pressure, and the gap between the side edge of the material to be rolled is guided to a predetermined small value to bend the material to be rolled. The unsteady part near the trailing edge changes the set pressure of hydraulic oil to the above low pressure, and when the side guide opening exceeds a predetermined allowable amount according to the bending amount of the trailing end of the rolled material, the hydraulic oil Set pressure of before The above-mentioned problems of the prior art are solved by switching to high pressure and guiding, and further, when the set pressure of the hydraulic oil is low, the allowable increase amount of the side guide opening with respect to the width of the rolled material is rolled. By setting the amount of bending at the rear end of the material to 30 to 90%, more effective guiding can be achieved.

【0008】[0008]

【作 用】先ず、油圧回路の作動油の圧力設定を高圧と
低圧の2段階以上に設定可能にする。この設定はリリー
フ弁やプレッシャタンク等により行うことができる。そ
して、高圧側の設定圧力は被圧延材をサイドガイドで曲
げ矯正する際の押圧力が得られる以上の圧力とし、低圧
側の設定圧力は被圧延材をガイディングするのに支障の
ない支持反力に見合った圧力にする。さらに、作動油の
設定圧力が低圧時には、サイドガイドを前記ガイディン
グの支持反力の増加に伴って開方向に移動可能とする。
[Operation] First, the hydraulic oil pressure in the hydraulic circuit can be set in two or more stages, high pressure and low pressure. This setting can be performed by a relief valve, a pressure tank, or the like. Then, the set pressure on the high pressure side should be a pressure higher than the pressing force for straightening the material to be rolled by the side guides, and the set pressure on the low pressure side should be a supporting force that does not hinder the guiding of the material to be rolled. Adjust the pressure to match your strength. Further, when the set pressure of the hydraulic oil is low, the side guide can be moved in the opening direction as the supporting reaction force of the guiding increases.

【0009】このようにして、被圧延材の後端部を除く
比較的曲がりの少ない定常部は作動油圧力を高圧に設定
するとともに被圧延材側縁との間隙を所定の僅少値とし
てガイディングさせる。この場合、サイドガイドは高圧
の作動油によりその開度が維持されるため、被圧延材に
多少の曲がりがあっても、また斜行しようとしてもエッ
ジャミルとサイドガイド間で被圧延材を矯正可能な程度
の曲げモーメントを被圧延材に付与することができ、曲
がりまたは斜行の助長を防止することが可能となる。な
お、作動油圧力の高圧側設定値は、機械破損を生じない
程度の圧力以下とする必要がある。
In this way, the stationary part, which is relatively bent less than the rear end of the material to be rolled, sets the hydraulic oil pressure to a high pressure and guides the gap between the side edge of the material to be rolled to a predetermined small value. Let In this case, the opening of the side guide is maintained by the high-pressure hydraulic oil, so even if the material to be rolled has some bending, or if it tries to skew, the material to be rolled can be corrected between the edger mill and the side guide. It is possible to apply a bending moment to the material to be rolled to an extent that it is possible to prevent the promotion of bending or skewing. It should be noted that the set value of the hydraulic oil pressure on the high pressure side needs to be equal to or lower than a pressure that does not cause mechanical damage.

【0010】続いて、曲がりのある被圧延材後端近傍の
非定常部がサイドガイドに進入する前に、作動油圧力の
設定を高圧から低圧に切換える。この場合は、前述の如
くサイドガイドの開度はガイディングの支持反力の増加
に伴って開方向に移動可能であるため、曲がりの初期に
はその曲がりに応じてサイドガイドの開度が増加し、ス
ムーズな通板ができる。そして、その開度の増加量があ
らかじめ定めた許容量を越えたときには、直ちに作動油
の設定圧力を高圧に切換える。このように、高圧に切換
えることによって前述被圧延材の定常部と同様に曲がり
や斜行の助長が防止できる。
Then, before the unsteady portion near the rear end of the curved material to be rolled enters the side guide, the hydraulic oil pressure is switched from high pressure to low pressure. In this case, the opening of the side guide can move in the opening direction as the supporting reaction force of the guiding increases, as described above, so that the opening of the side guide increases in the initial stage of bending depending on the bending. However, smooth threading is possible. Then, when the increase amount of the opening exceeds the predetermined allowable amount, the set pressure of the hydraulic oil is immediately switched to the high pressure. In this way, by switching to a high pressure, it is possible to prevent the promotion of bending and skew as in the steady part of the material to be rolled.

【0011】この場合、作動油圧力の設定値は、サイド
ガイドとして最低限対抗しなければならない被圧延材の
厚み、幅、変形抵抗等から求まる荷重に基づき算出した
値より若干高い値に決定する。また、前記サイドガイド
の開度増加許容量は、サイドガイドの入側に設置した幅
計等によって被圧延材後端部の曲がり量を測定し、その
曲がり量に応じて決定するが、測定した被圧延材の曲が
り量の30〜90%を被圧延材の幅に加えた開度を最大開度
限界にするのが望ましい。
In this case, the set value of the hydraulic oil pressure is determined to be a value slightly higher than the value calculated based on the load obtained from the thickness, width, deformation resistance, etc. of the material to be rolled which must be at least opposed as the side guide. .. Further, the allowable increase in the opening degree of the side guide is measured by measuring the bending amount of the rear end portion of the material to be rolled by a width meter installed on the entrance side of the side guide and determined according to the bending amount. It is desirable to set the opening degree, which is 30 to 90% of the bending amount of the rolled material added to the width of the rolled material, to the maximum opening limit.

【0012】[0012]

【実施例】図1にこの発明によるサイドガイドの制御方
法を実施するための油圧回路の一実施例を示し、図2に
この場合のサイドガイドの開度と作動油の圧力との関係
を示す。また、図3は同様に油圧回路の他の実施例であ
り、図4はその場合のサイドガイドの開度と作動油の圧
力との関係を示したものである。
1 shows an embodiment of a hydraulic circuit for carrying out the side guide control method according to the present invention, and FIG. 2 shows the relationship between the opening of the side guide and the pressure of hydraulic oil in this case. .. Similarly, FIG. 3 shows another embodiment of the hydraulic circuit, and FIG. 4 shows the relationship between the opening of the side guide and the pressure of the hydraulic oil in that case.

【0013】図1、図3において、10は方向切換用電磁
弁で、また11、11はパイロットチェック弁であり、従来
のものとその使用方法は変わらない。先ず図1におい
て、油圧シリンダ4の押し側41への配管には高圧リリー
フ弁15を設ける。この高圧リリーフ弁には前述の作動油
圧力の高圧側を設定する。そして17はプレッシャタンク
で、このプレッシャタンクのバネ定数は、前述作動油圧
力の低圧側設定値と前述のサイドガイド開度増加許容量
から決定して調整装置18により設定する。また、図2に
おいてP1 が低圧側設定値であり、P2 が高圧側設定値
である。この切換はON、OFF 用電磁弁16により行う。
In FIG. 1 and FIG. 3, 10 is a directional switching solenoid valve, and 11 and 11 are pilot check valves, the usage of which is the same as the conventional one. First, in FIG. 1, a high pressure relief valve 15 is provided in the pipe to the pushing side 41 of the hydraulic cylinder 4. The high pressure side of the hydraulic oil pressure is set in this high pressure relief valve. Reference numeral 17 is a pressure tank, and the spring constant of this pressure tank is set by the adjusting device 18 determined from the low-pressure side set value of the hydraulic oil pressure and the aforementioned side guide opening increase allowable amount. Further, in FIG. 2, P 1 is the low pressure side set value, and P 2 is the high pressure side set value. This switching is performed by the ON / OFF solenoid valve 16.

【0014】この場合、被圧延材の定常部では電磁弁16
は OFF(閉止)であり、油圧シリンダ4は電磁弁10が図
の状態でパイロットチェック弁11、11によってサイドガ
イドはその開度が被圧延材の幅より所定の僅少値、5〜
10mm程度(両側、但しサイドガイドに竪ガイドローラが
ある場合はさらに小)広い間隔でガイディングさせる。
この場合のリリーフ弁15の設定圧力は高圧側P2 であ
る。そしてサイドガイドに過大な力Zが加わると、リリ
ーフ弁15により作動油は解放されて機械を保護する。
In this case, in the stationary part of the rolled material, the solenoid valve 16
Is OFF (closed), and in the hydraulic cylinder 4, the solenoid valve 10 is in the state shown in the figure, and the opening of the side guide is smaller than the width of the material to be rolled by the pilot check valves 11 and 11.
About 10mm (Both sides, but smaller if vertical guide rollers are on the side guides) Guide at wide intervals.
The set pressure of the relief valve 15 in this case is the high pressure side P 2 . When an excessive force Z is applied to the side guide, the relief valve 15 releases the hydraulic oil to protect the machine.

【0015】続いて被圧延材の非定常部がサイドガイド
に進入する直線に電磁弁16をON(導通)にすれば作動油
の圧力はP0 まで低下する。ここで、前述の如く進入し
てくる被圧延材後端部の曲がりはあらかじめ幅計(図示
省略)等によって測定してあり、低圧側への切換タイミ
ングと、被圧延材の幅Bに対する開度増加許容量αy C
を算出してその値とが設定されている。そして、設定圧
力を低圧側に切換えると同時にサイドガイドを被圧延材
側縁にほとんど接する程度、例えばB+5mmの開度W0
にする。但し、曲がり量が大きい場合等にはW0 は前述
の定常部での開度のままでもよく、これは被圧延材の厚
み、曲がり量等によって適宜決めればよいもので、サイ
ドガイドに竪ガイドローラがある場合はW0 =Bでもよ
い。
Next, the unsteady part of the rolled material is a side guide.
If the solenoid valve 16 is turned on (conducting) in the straight line
Pressure is P0Falls to. Now enter as described above
The bending of the rear edge of the rolled material that comes
(Omitted), etc.
And the allowable opening increase amount αy with respect to the width B of the rolled material C
Is calculated and its value is set. And set pressure
When the force is switched to the low pressure side, the side guide is rolled at the same time.
The degree of contact with the side edge, for example, B + 5 mm opening W0
To However, if the amount of bend is large, W0Is the above
The opening at the steady part of
Size, the amount of bending, etc.
W if the guide has a vertical guide roller0= B
Yes.

【0016】さらに被圧延材が進行して曲がりのために
被圧延材側縁がサイドガイドと接触し、サイドガイドが
開く方向(Zの方向)に押されて移動するとともに作動
油もプレッシャタンク17に押込まれて圧力が上昇し、遂
には低圧側設定圧力P1 に到達し、同時にまたサイドガ
イドも開度増加許容量αyC に達する。このときのサイ
ドガイドの開度はB+αyCである。この状態になると
再度電磁弁16を OFFとし、作動油の設定圧力をリリーフ
弁15に設定した高圧側P2 にして異常時以外はサイドガ
イドがそれ以上開かないようにする。
Further, as the rolled material advances and bends, the side edges of the rolled material come into contact with the side guides, the side guides are pushed and moved in the opening direction (Z direction), and the hydraulic oil also pressure tank 17 Then, the pressure rises and finally reaches the low pressure side set pressure P 1, and at the same time, the side guide also reaches the opening increase allowable amount αy C. The opening of the side guide at this time is B + αy C. In this state, the solenoid valve 16 is turned off again, and the set pressure of the hydraulic oil is set to the high pressure side P 2 set in the relief valve 15 so that the side guide will not be opened any more except when there is an abnormality.

【0017】なお、低圧側の設定圧力を開度増加許容量
αyC に相当するP1 として説明したが、これをサイド
ガイドの初期開度W0 の位置におけるP0 とし、開度増
加許容量に到達したことを圧力増加から求めることもこ
のプレッシャタンクの場合は容易にでき、いずれにして
も、サイドガイドの開度変化を作動油圧力の変化で比較
的正確に、しかも簡単に検出できるのがこのプレッシャ
タンクを使用したときの利点である。
[0017] Although described as P 1 which corresponds to the set pressure of the low pressure side opening increasing tolerance .alpha.y C, which was a P 0 at the position of the initial opening W 0 of the side guide, the opening increases tolerance In the case of this pressure tank, it is easy to determine that the pressure has reached the pressure increase.In any case, the change in the side guide opening can be detected relatively accurately and easily by the change in hydraulic oil pressure. Is the advantage of using this pressure tank.

【0018】次に図3、図4により、プレッシャタンク
に代えて低圧リリーフ弁を使用した例について説明す
る。低圧リリーフ弁19には作動油の低圧側圧力P1 を設
定してある。この場合は、被圧延材側縁がサイドガイド
に接触して作動油の圧力が上昇する度に、リリーフ弁19
から作動油が開放されるため、サイドガイドの支持反力
Zは鋸歯状の増減を繰り返しが、作動油の圧力変化も同
様であり、プレッシャタンクのように作動油の圧力変化
からサイドガイドの開度増加許容量αyC 到達を検出す
ることはできない。従って、サイドガイドの移動量を直
接、例えば図7におけるピニオン6の回転角度を利用し
て検出する。その他の高圧リリーフ弁15や、電磁弁16の
使用方法は前述図1、図2の場合と全く同じである。
Next, an example in which a low pressure relief valve is used instead of the pressure tank will be described with reference to FIGS. A low pressure side pressure P 1 of the hydraulic oil is set in the low pressure relief valve 19. In this case, each time the side edge of the material to be rolled contacts the side guide and the pressure of the hydraulic oil rises, the relief valve 19
Since the hydraulic oil is released from the side guide, the supporting reaction force Z of the side guide repeatedly increases and decreases in a sawtooth shape, but the pressure change of the hydraulic oil is similar, and the side guide is opened from the pressure change of the hydraulic oil like a pressure tank. It is not possible to detect the arrival of the degree increase allowance α y C. Therefore, the movement amount of the side guide is directly detected, for example, by using the rotation angle of the pinion 6 in FIG. 7. Other uses of the high pressure relief valve 15 and the solenoid valve 16 are exactly the same as in the case of FIGS.

【0019】なお、このサイドガイドに被圧延材の先端
が進入してきた時点でセンタリングを行い、その後若干
開いて所定の僅少値の間隙5〜10mmにすることは言うま
でもない。図5は、被圧延材後端部の曲がり量yCに対
するサイドガイドと被圧延材側縁との間隙、すなわち開
度増加許容量αyC の適正範囲を調査した結果を示すも
のであり、図に示すようにαyC が 0.3yC 以下では被
圧延材側縁部にキズが発生し、 0.9yC 以上では入側の
曲がりによるオフセンタが原因でその曲がりが助長され
る。従ってαyC の適正範囲は被圧延材後端部曲がり量
C の 0.3〜0.9 倍にするのが望ましい。
Needless to say, centering is performed when the tip of the material to be rolled enters this side guide, and then it is slightly opened to make a gap of a predetermined small value of 5 to 10 mm. FIG. 5 shows the results of an investigation of the gap between the side guide and the side edge of the rolled material with respect to the bending amount y C of the rear end of the rolled material, that is, the appropriate range of the opening degree increase allowable amount α y C. .alpha.y C as shown in scratches occurs in the rolled material side edges below 0.3Y C, in 0.9Y C or more is promoted its bend due to off-center due to bending of the inlet side. Thus the proper range of .alpha.y C is to the 0.3 to 0.9 times the material to be rolled back end portion bent amount y C is desirable.

【0020】この発明によるサイドガイドの制御方法
を、粗圧延機のエッジャミル入側サイドガイドで実施し
た。その結果、従来の単に一定開度でガイディングする
場合では曲がりの矯正が十分にできず、またセンタリン
グのみを行うサイドガイドでも被圧延材後端部の曲がり
の矯正は満足できないものであったが、この発明によれ
ば、被圧延材側縁部でのキズの発生もなくなり、また後
端部の曲がりも仕上圧延に支障を来すほどのものはなく
することができた。さらに付随して、曲がりを小さくで
きたことからエッジャミルで発生する曲がりの内側のド
ッグボーンも小さくなり、左右のドッグボーンの大きさ
を均等に近づけることができた。
The side guide control method according to the present invention was carried out on the side guide on the edger mill entrance side of the rough rolling mill. As a result, in the conventional case of simply guiding with a constant opening, the bending could not be corrected sufficiently, and even with a side guide that only performs centering, the bending of the rear end of the rolled material could not be corrected. According to the present invention, the occurrence of scratches on the side edge of the material to be rolled can be eliminated, and the bending of the rear end can be eliminated to the extent that it hinders finish rolling. In addition, since the bend can be made smaller, the dogbone inside the bend generated in the edger mill is also made smaller, and the left and right dogbones can be made evenly close in size.

【0021】なお以上の説明は粗圧延機列のエッジャミ
ル入側のサイドガイドについて行ったが、エッジャミル
を近接設置していない水平ミルにも同様にこの発明を適
用できるものである。
Although the above description has been made on the side guide on the edger mill entry side of the row of rough rolling mills, the present invention can be similarly applied to a horizontal mill in which the edger mills are not installed close to each other.

【0022】[0022]

【発明の効果】この発明による粗ミル用油圧駆動方式サ
イドガイドの制御方法を実施することにより、被圧延材
後端部でもスムーズなガイディングが可能となり、被圧
延材側縁部のキズを防止することができ、また曲がりの
矯正が効果的に行なえるのみならず、被圧延材の左右ド
ッグボーンの高さをほぼ均等にできるため水平ミルでの
曲がり発生が抑制され、仕上圧延に良好な粗材の供給が
可能になり、さらにはサイドガイドに大きな衝撃力が加
わることも防止される等多くの効果を得ることができ
る。
By implementing the control method for the hydraulically driven side guide for a rough mill according to the present invention, smooth guiding can be performed even at the rear end of the rolled material and scratches on the side edge of the rolled material can be prevented. Not only can the bending be corrected effectively, but also the left and right dog bones of the material to be rolled can be made almost even in height, which suppresses the occurrence of bending in a horizontal mill and is suitable for finish rolling. It is possible to supply a rough material, and it is possible to obtain many effects such as preventing a large impact force from being applied to the side guides.

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

【図1】この発明によるサイドガイドの制御方法を実施
するための油圧回路の一実施例を示す図面である。
FIG. 1 is a diagram showing an embodiment of a hydraulic circuit for carrying out a side guide control method according to the present invention.

【図2】図1に示す油圧回路におけるサイドガイドの開
度と作動油の圧力との関係を示す図面である。
2 is a drawing showing the relationship between the opening of a side guide and the pressure of hydraulic oil in the hydraulic circuit shown in FIG.

【図3】この発明によるサイドガイドの制御方法を実施
するための油圧回路の他の実施例の説明図である。
FIG. 3 is an explanatory view of another embodiment of a hydraulic circuit for carrying out the side guide control method according to the present invention.

【図4】図3に示す油圧回路におけるサイドガイドの開
度と作動油の圧力との関係を示す図面である。
4 is a drawing showing the relationship between the opening of a side guide and the pressure of hydraulic oil in the hydraulic circuit shown in FIG.

【図5】被圧延材後端部の曲がり量に対するサイドガイ
ドと被圧延材側縁との隙間の適正範囲を調査した結果を
示す図面である。
FIG. 5 is a diagram showing a result of an examination of an appropriate range of a gap between a side guide and a side edge of a rolled material with respect to a bending amount of a trailing end of the rolled material.

【図6】この発明を適用するサイドガイドの例の平面図
である。
FIG. 6 is a plan view of an example of a side guide to which the present invention is applied.

【図7】図6のA−A矢視による断面図であり、従来の
油圧回路を説明するための図面である。
FIG. 7 is a cross-sectional view taken along the line AA of FIG. 6 and is a view for explaining a conventional hydraulic circuit.

【符号の説明】[Explanation of symbols]

1 被圧延材 2 エッジャミル 3 サイドガイド 4 油圧シリンダ 5 ピニオンスタンド 6 ピニオン 7 ラックビーム 10 方向切換用電磁弁 11 パイロットチェック弁 12 リリーフ弁 15 高圧リリーフ弁 16 ON、OFF 用電磁弁 17 プレッシャタンク 18 制御機構 19 低圧リリーフ弁 1 Rolled material 2 Edger mill 3 Side guide 4 Hydraulic cylinder 5 Pinion stand 6 Pinion 7 Rack beam 10 Direction switching solenoid valve 11 Pilot check valve 12 Relief valve 15 High pressure relief valve 16 ON / OFF solenoid valve 17 Pressure tank 18 Control mechanism 19 Low pressure relief valve

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 熱間連続圧延機の粗圧延機列における粗
ミル入側の油圧駆動方式サイドガイドの制御方法であっ
て、油圧回路の作動油圧力を少なくとも被圧延材の曲が
りの矯正が可能な高圧とガイディングに必要な支持反力
に見合う低圧の2段階以上に設定可能とするとともに、
作動油の設定圧力が低圧時にはサイドガイドを前記支持
反力の増加に伴って開方向に移動可能とし、被圧延材の
定常部は作動油圧力を前記高圧に設定するとともに被圧
延材側縁との間隙を所定の僅少値としてガイディングさ
せ、曲がりのある被圧延材後端近傍の非定常部は作動油
の設定圧力を前記低圧に切換え、かつサイドガイドの開
度が被圧延材後端部の曲がり量に応じてあらかじめ定め
た許容量を越えたときに作動油の設定圧力を前記高圧に
切換えてガイディングさせることを特徴とする粗ミル用
油圧駆動方式サイドガイドの制御方法。
1. A method for controlling a hydraulically driven side guide on the side of a rough mill in a row of rough rolling mills of a hot continuous rolling mill, which is capable of correcting at least a bending of a material to be rolled by a hydraulic oil pressure of a hydraulic circuit. It is possible to set two or more stages of high pressure and low pressure corresponding to the supporting reaction force required for guiding.
When the set pressure of the hydraulic oil is low, the side guides can be moved in the opening direction as the supporting reaction force increases, and the steady part of the material to be rolled sets the hydraulic oil pressure to the high pressure and also to the side edges of the material to be rolled. Is set to a certain small value, and the unsteady part near the trailing end of the rolled material with a bend switches the set pressure of hydraulic oil to the low pressure, and the side guide opening is the trailing end of the rolled material. A method for controlling a hydraulically driven side guide for a rough mill, wherein the set pressure of the hydraulic oil is switched to the high pressure for guiding when the amount exceeds a predetermined allowable amount according to the amount of bending.
【請求項2】 前記作動油の設定圧力が低圧時の被圧延
材の幅に対するサイドガイドの開度増加許容量を被圧延
材後端部曲がり量の30〜90%に設定することを特徴とす
る請求項1記載の粗ミル用油圧駆動方式サイドガイドの
制御方法。
2. The allowable increase amount of the side guide opening with respect to the width of the material to be rolled when the set pressure of the hydraulic oil is low is set to 30 to 90% of the amount of bending of the rear end portion of the material to be rolled. The method for controlling a hydraulically driven side guide for a rough mill according to claim 1.
JP3249655A 1991-09-27 1991-09-27 Control method of hydraulically driven side guide for coarse mill Expired - Fee Related JP2988759B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3249655A JP2988759B2 (en) 1991-09-27 1991-09-27 Control method of hydraulically driven side guide for coarse mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3249655A JP2988759B2 (en) 1991-09-27 1991-09-27 Control method of hydraulically driven side guide for coarse mill

Publications (2)

Publication Number Publication Date
JPH0584507A true JPH0584507A (en) 1993-04-06
JP2988759B2 JP2988759B2 (en) 1999-12-13

Family

ID=17196253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3249655A Expired - Fee Related JP2988759B2 (en) 1991-09-27 1991-09-27 Control method of hydraulically driven side guide for coarse mill

Country Status (1)

Country Link
JP (1) JP2988759B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102335678A (en) * 2011-09-30 2012-02-01 莱芜钢铁股份有限公司 Braking device for steel shear gauge
JP2018015787A (en) * 2016-07-28 2018-02-01 Jfeスチール株式会社 Rolling device of steel material, manufacturing apparatus of steel material, rolling method of steel material and manufacturing method of steel material
CN113020269A (en) * 2021-03-09 2021-06-25 马鞍山钢铁股份有限公司 Novel strip steel coiling guide control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102335678A (en) * 2011-09-30 2012-02-01 莱芜钢铁股份有限公司 Braking device for steel shear gauge
JP2018015787A (en) * 2016-07-28 2018-02-01 Jfeスチール株式会社 Rolling device of steel material, manufacturing apparatus of steel material, rolling method of steel material and manufacturing method of steel material
CN113020269A (en) * 2021-03-09 2021-06-25 马鞍山钢铁股份有限公司 Novel strip steel coiling guide control method

Also Published As

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