JPH09155418A - Finish rolling mill train provided with on-line roll grinding machine - Google Patents

Finish rolling mill train provided with on-line roll grinding machine

Info

Publication number
JPH09155418A
JPH09155418A JP32075595A JP32075595A JPH09155418A JP H09155418 A JPH09155418 A JP H09155418A JP 32075595 A JP32075595 A JP 32075595A JP 32075595 A JP32075595 A JP 32075595A JP H09155418 A JPH09155418 A JP H09155418A
Authority
JP
Japan
Prior art keywords
org
rolling
roll
rolling mill
grinding
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
JP32075595A
Other languages
Japanese (ja)
Other versions
JP3120032B2 (en
Inventor
Yusuke Iwao
雄介 岩尾
Hironobu Tanaka
宏信 田中
Toru Kondo
透 近藤
Hiroshi Kimura
寛 木村
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
Nippon 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
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Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP07320755A priority Critical patent/JP3120032B2/en
Publication of JPH09155418A publication Critical patent/JPH09155418A/en
Application granted granted Critical
Publication of JP3120032B2 publication Critical patent/JP3120032B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To stably feed a low crown material of excellent quality by incorporating an on-line roll grinder in final three stands of a continuous finish rolling mill, and independently controlling the grinding to reduce the stop loss of the rolling mill. SOLUTION: On-line roll grinders 5 (ORG equipment) are closely arranged corresponding to upper work rolls and lower work rolls of final three stands 2, 3, 4 of a continuous finish rolling mill group 1. Each wear of the upper and lower work rolls is operated by a wear operating part 7, and an ORG grinding control part 8 gives the prescribed roll grinding command to each of the ORG equipment 5 based on the signal of the operated wear. A grinding head unit of the ORG equipment 5 individually controls the pressing force and the traverse speed to the rolls. A non-worn part except the worn part of the rolling roll is mainly ground by the ORG equipment 5. The rolling limit in shifting the rolling width can be mitigated.

Description

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

【0001】[0001]

【発明が属する技術分野】本発明は、オンラインロール
研削機を備えた仕上圧延機列、特に、オンラインロール
グラインダー(以下、単にORGとする)を特定圧延機
内に配置した鋼板仕上圧延機列に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finishing rolling mill train equipped with an online roll grinder, and more particularly to a steel plate finishing rolling mill train in which an online roll grinder (hereinafter, simply referred to as ORG) is arranged in a specific rolling mill. Is.

【0002】[0002]

【従来の技術】一般に、鋼板の熱間或いは冷間圧延に使
用する圧延ロールは、鋼板通板部に相当する部分のみが
摩耗し、鋼板未通板部(未摩耗部)との間に段差が生じ
る。この摩耗段差が進行すると鋼板断面の板厚偏差が大
きくなったり、幅狭の鋼板の次に幅広の鋼板を圧延する
場合には、鋼板形状が不良となり、製品歩留りを低下さ
せる不都合がある。そのため圧延順序や圧延長さの規制
という圧延上の制約が生じていた。
2. Description of the Related Art Generally, in a rolling roll used for hot or cold rolling of a steel sheet, only a portion corresponding to the steel sheet passing portion is worn, and a step is formed between the steel sheet non-passing portion (unwearing portion). Occurs. When this wear step progresses, the deviation of the thickness of the steel plate cross-section becomes large, or when a wide steel plate is rolled next to a narrow steel plate, the shape of the steel plate becomes defective and the product yield decreases. Therefore, there are restrictions on rolling such as restrictions on rolling order and rolling length.

【0003】このような不都合のある摩耗段差の解消の
ため、圧延機内に、ロール軸方向に横行自在にした円盤
状回転砥石を有するORG設備を設置し、圧延中或いは
圧延と圧延との間の未圧延中に圧延ロールを研削する試
みがなされている(例えば、特開平6−190410号
公報、特開平6−304614号公報参照)。
In order to eliminate such an inconvenient wear level difference, an ORG equipment having a disk-shaped grindstone that can traverse in the roll axis direction is installed in the rolling mill to perform rolling or during rolling. Attempts have been made to grind a rolling roll during unrolling (see, for example, JP-A-6-190410 and JP-A-6-304614).

【0004】このORG設備による摩耗段差の解消は、
圧延上の制約、特に圧延幅の幅広移行(幅逆転)に対す
る制約を無くし、出鋼順=圧延順となるような、いわゆ
るスケジュールフリー圧延を可能とする足掛かりとな
る。従って、圧延ロールの組替頻度の高いワークロール
を有する仕上圧延機の全てに対して、ORG装置を配置
することがスケジュールフリー圧延を確立するために必
要と考えられていた。
The elimination of the wear step by this ORG equipment is as follows.
It becomes a foothold to enable so-called schedule-free rolling in which rolling restrictions, particularly restrictions on wide transition of rolling width (width reversal) are eliminated, and the order of steel output = rolling order. Therefore, it has been considered necessary to arrange an ORG device for all finish rolling mills having work rolls with a high frequency of changing the rolling rolls in order to establish schedule-free rolling.

【0005】一方、通常6ないし7スタンドで構成され
る仕上圧延機の前段スタンド(No.1〜No.3又は
No.4スタンド)においては、ロール肌荒れに起因す
るスケール発生が懸念されることから、ORG設備によ
り通板部の肌荒れ除去研削を行うことも従来提案されて
いる(特開昭61−49713号公報)。
On the other hand, in the front stand (No. 1 to No. 3 or No. 4 stand) of the finishing mill, which is usually composed of 6 to 7 stands, there is a concern that scale may be generated due to the rough surface of the roll. , ORG equipment has previously been proposed to perform surface roughening removal grinding (Japanese Patent Laid-Open No. 61-49713).

【0006】[0006]

【発明が解決しようとする課題】しかしながら、ORG
設備を仕上圧延機の全ての各スタンド間に設置すること
は、仕上スタンド間にはロール冷却設備、ルーパー、
サイドガイド、各種計測機器が既に配設してあるため、
ORGの如き大型設備を設けるための設置スペースに乏
しいこと、ORG設備自体の設置費が高いこと、O
RG設備の工事期間が長く、その間の圧延機の休止ロス
が大きく生産性を低下させること、等の理由により、好
ましくない。
However, the ORG
Installing the equipment between all the stands of the finish rolling mill means that roll cooling equipment, loopers,
Since side guides and various measuring devices are already installed,
The installation space for installing large equipment such as ORG is scarce, the installation cost of ORG equipment itself is high, O
It is not preferable because the construction period of the RG facility is long, the idle loss of the rolling mill during that period is large, and the productivity is reduced.

【0007】また、ORG設備による通板部の肌荒れ除
去研削についても、ロール肌荒れ状況を圧延中に観察す
る手段が必要であるが、実際には観察位置は冷却水、粉
塵の多い悪環境で、しかも振動状態となることから、カ
メラ等の設置は不向きであり、実機化には至っていな
い。そのためこの観察機器なしにORG研削を行うこと
は、過研削によるロール原単位の損失を招く問題があ
る。
[0007] Further, also for the roughening removal grinding of the passing plate portion by the ORG equipment, a means for observing the roughening state of the roll during rolling is necessary, but in reality, the observation position is in a bad environment with a lot of cooling water and dust, Moreover, since it is in a vibrating state, it is unsuitable for installation of a camera or the like, and has not been realized yet. Therefore, performing ORG grinding without this observation device has a problem of causing a loss of roll unit due to over-grinding.

【0008】本発明は、このような現状に鑑みなされた
もので、ORG設備を必要最小限の最も有効な位置に特
定して配置し、これにより経済性及び生産性の向上を図
り、低クラウン材の製造を安定して行うことができる仕
上圧延機列を提供することを目的とする。なお、従来に
おいてはこのように連続圧延機におけるORG設備の設
置スタンドを特定した発明は見当たらない。
The present invention has been made in view of such a situation as described above, and the ORG equipment is specified and arranged at the minimum and most effective position, thereby improving the economical efficiency and the productivity, and reducing the crown. An object of the present invention is to provide a finishing rolling mill train capable of stably manufacturing a material. Incidentally, conventionally, no invention has been found in which the installation stand of the ORG facility in the continuous rolling mill is specified.

【0009】[0009]

【課題を解決するための手段】本発明の要旨は次の通り
である。 (1)連続する圧延機からなる低クラウンの圧延鋼板仕
上圧延機列において、連続仕上圧延機の最終3スタンド
に、ワークロール研削用のオンラインロール研削機を組
み込み設置したことを特徴とするオンラインロール研削
機を備えた仕上圧延機列。 (2)オンラインロール研削機は、各ワークロール毎に
少なくとも2個以上の研削ヘッドユニットを有し、該研
削ヘッドユニットのそれぞれは独立して制御し得るオン
ラインロールグラインダーである上記(1)記載の仕上
圧延機列。
The gist of the present invention is as follows. (1) An online roll characterized by installing an online roll grinder for work roll grinding in the final three stands of the continuous finishing mill in a row of rolling steel strip finishing rolling mills of low crown consisting of continuous rolling mills Finishing rolling mill train equipped with a grinding machine. (2) The online roll grinder has at least two or more grinding head units for each work roll, and each of the grinding head units is an online roll grinder that can be independently controlled. Finishing rolling mill row.

【0010】以下、本発明を完成するに至った経緯につ
いて説明する。本発明者らは、圧延ロールの摩耗が低ク
ラウン材に及ぼす影響について、実際の7スタンドの熱
間仕上圧延機を用いて実験検討した結果、表1に示す知
見を得た。なお、表1において、摩耗比率とは最終スタ
ンドの摩耗量を1と置いたときの各スタンドの摩耗量比
率、遺伝係数とは圧延時のロールクラウンが成品板に及
ぼす転写比率、影響係数とは前記の摩耗比率×遺伝係数
である。
The background of the completion of the present invention will be described below. The inventors of the present invention experimentally studied the effect of the wear of the rolling rolls on the low crown material using an actual 7-stand hot finishing mill, and as a result, obtained the findings shown in Table 1. In Table 1, the wear ratio is the wear ratio of each stand when the wear amount of the last stand is set to 1, and the genetic coefficient is the transfer ratio and the influence coefficient of the roll crown on the product plate during rolling. The above-mentioned wear ratio x heritability coefficient.

【0011】また、本発明において低クラウン材とは、
図3に示す板の断面図において、 クラウン=TC −TA (ただし、C:板センター部、A:板エッジ部、a:大
体15〜25mmの範囲) とした場合、低クラウン材=TC −TA ≦50μmと定
義したものである。
In the present invention, the low crown material means
In the cross-sectional view of the plate shown in FIG. 3, when crown = TC-TA (where C: plate center part, A: plate edge part, a: roughly 15 to 25 mm range), low crown material = TC-TA It is defined as ≦ 50 μm.

【0012】[0012]

【表1】 [Table 1]

【0013】表1から影響比率をみた場合、前段のF1
〜F4と後段のF5〜F7とで明確に分かれることが明
らかである。即ち、仕上圧延機の最終3スタンドの影響
比率が前段スタンドのそれに比較し格段に高いことが分
かる。これはロール摩耗はロール回転数と圧延荷重の積
に比例するため、後段スタンドになればなるほど、回転
数が増大することによるものと考えられる。このことか
ら低クラウン材の製造に際しては、少なくともロール摩
耗の影響は仕上圧延機の最終3スタンドにおいて顕著に
出ており、この最終3スタンドで精度の高い摩耗段差の
解消が図れれば、仕上前段のロール摩耗段差はこれを無
視しても実操業上問題のないことが知見された。この知
見に基づいて本発明者らは、仕上圧延機の最終3スタン
ドのみにオンラインロール研削機(ORG)を配置し、
その摩耗段差の解消を図った結果、満足すべき所望の品
質の低クラウン材を得ることができたのである。なお、
鋼種や板厚を変えて実験してみても、表1に示す傾向は
同様であることが認められた。
Looking at the influence ratios from Table 1, F1 in the previous stage
It is clear that ~ F4 and F5 to F7 in the subsequent stage are clearly separated. That is, it can be seen that the influence ratio of the last three stands of the finish rolling mill is significantly higher than that of the preceding stand. It is considered that this is because the roll wear increases in proportion to the product of the roll rotation speed and the rolling load, so that the rotation speed increases as the stand becomes the latter stage. From this, at the time of manufacturing a low crown material, at least the influence of roll wear is noticeable in the final three stands of the finishing rolling mill. If the final three stands can eliminate the wear step with high accuracy, the finishing stage It was found that there is no problem in actual operation even if the roll wear step of No. 1 is ignored. Based on this knowledge, the present inventors arranged an online roll grinder (ORG) only in the last three stands of the finishing rolling mill,
As a result of eliminating the wear step, it was possible to obtain a low-crown material having a desired quality that was satisfactory. In addition,
Even when the steel type and the plate thickness were changed and the experiment was conducted, it was confirmed that the tendency shown in Table 1 was the same.

【0014】[0014]

【発明の実施の形態】以下本発明の実施例を図面にした
がって説明する。図1は4Hi(勿論、6Hiであって
もよい)の7スタンドからなる熱間仕上圧延機に本発明
を適用した場合の実施態様を示すものである。図におい
て、1は連続仕上圧延機群、2,3,4は仕上圧延機群
1の最終3スタンドの圧延機をそれぞれ示す。5は最終
3スタンドの圧延機2,3,4の上ワークロール及び下
ワークロールにそれぞれ対応して近接設置するORG装
置、6は圧延荷重を計測するロードセル、7は圧延荷
重、ロール回転数などの圧延条件に基づき各圧延機2,
3,4の上ワークロール及び下ワークロールの各摩耗量
を演算する摩耗演算部、8は該摩耗演算部7からの信号
に基づき各ORG装置5のそれぞれに対し所定のロール
研削指令を出力するORG研削制御部である。なお、摩
耗量を得る場合、図示の例に限らず、圧延機スタンド間
に設置した適宜のオンラインプロフィルメータによるロ
ールプロフィルの測定値に基づいて得ることも可能であ
る。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment in the case where the present invention is applied to a hot finishing rolling mill comprising 7 stands of 4Hi (of course, 6Hi may be used). In the figure, 1 is a group of continuous finishing rolling mills, and 2, 3 and 4 are rolling mills of the last three stands of the finishing rolling mill group 1. 5 is an ORG device which is installed close to each of the upper and lower work rolls of the rolling mills 2, 3 and 4 in the final three stands, 6 is a load cell for measuring rolling load, 7 is rolling load, roll speed, etc. Based on the rolling conditions of
A wear calculation unit for calculating the wear amounts of the upper and lower work rolls 3 and 4, and 8 outputs a predetermined roll grinding command to each of the ORG devices 5 based on a signal from the wear calculation unit 7. It is an ORG grinding control unit. Note that the amount of wear is not limited to the example shown in the figure, and it is also possible to obtain the amount of wear based on the measured value of the roll profile by an appropriate online profilometer installed between rolling mill stands.

【0015】図2はORG装置5の概要を示すもので、
9は研削すべき圧延ロール表面に対応して配置したOR
G研削ヘッドユニット、10はORG研削砥石、11は
ORG研削ヘッド横行レール、12は被研削材である圧
延ロール、13は該圧延ロールのチョックである。前記
研削ヘッドユニット9は、図示の如く、1個の圧延ロー
ル12に対し少なくとも2個配置されており、それぞれ
は独立して制御可能、即ち、ロールに対する押付力及び
横行速度が個々に制御し得るようになっている。また、
研削砥石10は矢印のように横行レール11に沿って
(即ち、ロール軸方向に)横行自在で、かつ、ロール表
面に対しても前後進自在に保持されている。このような
ORG装置5によって、圧延ロール12の摩耗部を除く
未摩耗部を主として研削することになる。
FIG. 2 shows the outline of the ORG device 5.
9 is an OR arranged corresponding to the surface of the rolling roll to be ground
G grinding head unit, 10 is an ORG grinding grindstone, 11 is an ORG grinding head traversing rail, 12 is a rolling roll that is a material to be ground, and 13 is a chock of the rolling roll. As shown in the figure, at least two grinding head units 9 are arranged for one rolling roll 12, each of which can be controlled independently, that is, the pressing force and the traverse speed on the roll can be individually controlled. It is like this. Also,
The grinding wheel 10 can be traversed along the traverse rail 11 (that is, in the roll axial direction) as indicated by the arrow, and is also held so as to be able to move back and forth with respect to the roll surface. The ORG device 5 as described above mainly grinds the unworn portion of the rolling roll 12 excluding the worn portion.

【0016】なお、本発明の図示の例ではオンラインロ
ールグラインダー(ORG)を配置した場合を説明した
が、これはこのグラインダーが最もコンパクトで安定か
つ確実な研削操作が行えるためである。勿論、同様な研
削作業が行えるものであれば、他のオンラインロール研
削装置を採用することも可能である。
In the illustrated example of the present invention, the online roll grinder (ORG) is arranged. This is because this grinder is the most compact, and can perform stable and reliable grinding operation. Of course, other online roll grinding devices can be adopted as long as the same grinding work can be performed.

【0017】[0017]

【発明の効果】以上の本発明の仕上圧延機列によれば、
高価なORG設備を後段の最終3スタンドのみに配置す
るだけで済むので、設備費の低減を図ることができると
共に、圧延機の休止ロスを短くでき生産性の低下をでき
るだけ少なくし得る。更に、本発明により品質の良好な
低クラウン材を安定して供給できると共に、圧延幅移行
における圧延制約緩和を可能とする。
According to the finishing rolling mill train of the present invention described above,
Since it is only necessary to arrange the expensive ORG equipment only in the last three stands in the subsequent stage, it is possible to reduce the equipment cost and to reduce the downtime loss of the rolling mill to minimize the decrease in productivity. Further, according to the present invention, it is possible to stably supply a low-crown material having a good quality, and it is possible to relax the rolling constraint in the transition of the rolling width.

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

【図1】本発明に係る仕上圧延機列の実施例を示す全体
配置図。
FIG. 1 is an overall layout diagram showing an embodiment of a finish rolling mill train according to the present invention.

【図2】図1において使用するORG設備の概要を示す
説明図。
FIG. 2 is an explanatory diagram showing an outline of ORG equipment used in FIG.

【図3】低クラウン材の定義をするための板断面図。FIG. 3 is a plate cross-sectional view for defining a low crown material.

【符号の説明】[Explanation of symbols]

1 仕上圧延機群 2〜4 最終3スタンド 5 ORG装置 6 ロードセル 7 摩耗演算部 8 ORG研削制御部 9 ORG研削ヘッドユニット 10 研削砥石 11 横行レール 12 圧延ロール 13 ロールチョック 1 Finishing Rolling Machine Group 2-4 Last 3 Stands 5 ORG Device 6 Load Cell 7 Wear Computation Unit 8 ORG Grinding Control Unit 9 ORG Grinding Head Unit 10 Grinding Wheel 11 Traverse Rail 12 Rolling Roll 13 Roll Chock

───────────────────────────────────────────────────── フロントページの続き (72)発明者 木村 寛 大分県大分市大字西ノ洲1番地 新日本製 鐵株式会社大分製鐵所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroshi Kimura 1 Nishinosu, Oita City, Oita Prefecture New Nippon Steel Co., Ltd. Oita Steel Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 連続する圧延機からなる低クラウンの圧
延鋼板仕上圧延機列において、連続仕上圧延機の最終3
スタンドに、ワークロール研削用のオンラインロール研
削機を組み込み設置したことを特徴とするオンラインロ
ール研削機を備えた仕上圧延機列。
1. A low-crown rolled steel plate finishing rolling mill train consisting of continuous rolling mills, wherein the final three finishing rolling mills are used.
A finishing rolling mill train equipped with an online roll grinder, characterized in that an online roll grinder for grinding work rolls is installed in the stand.
【請求項2】 オンラインロール研削機は、各ワークロ
ール毎に少なくとも2個以上の研削ヘッドユニットを有
し、該研削ヘッドユニットのそれぞれは独立して制御し
得るオンラインロールグラインダーである請求項1記載
の仕上圧延機列。
2. The online roll grinding machine has at least two grinding head units for each work roll, and each of the grinding head units is an online roll grinder that can be independently controlled. Of finishing mills.
JP07320755A 1995-12-08 1995-12-08 Finishing mill row with online roll grinder Ceased JP3120032B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP07320755A JP3120032B2 (en) 1995-12-08 1995-12-08 Finishing mill row with online roll grinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07320755A JP3120032B2 (en) 1995-12-08 1995-12-08 Finishing mill row with online roll grinder

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109719135A (en) * 2019-01-04 2019-05-07 北京首钢自动化信息技术有限公司 One kind is for zinc wire four-roller polishing machine online calibration method of aluminizing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109719135A (en) * 2019-01-04 2019-05-07 北京首钢自动化信息技术有限公司 One kind is for zinc wire four-roller polishing machine online calibration method of aluminizing
CN109719135B (en) * 2019-01-04 2020-06-19 北京首钢自动化信息技术有限公司 Online calibration method for four-roller finishing machine for aluminum-plated zinc wire

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