JPH059162B2 - - Google Patents
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- JPH059162B2 JPH059162B2 JP60147488A JP14748885A JPH059162B2 JP H059162 B2 JPH059162 B2 JP H059162B2 JP 60147488 A JP60147488 A JP 60147488A JP 14748885 A JP14748885 A JP 14748885A JP H059162 B2 JPH059162 B2 JP H059162B2
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- width
- rolled material
- roll
- presser
- rolling
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Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、圧延材の圧延ラインにおいて、圧延
材をエツジヤ・ロールで幅圧延するさいに発生す
る圧延材のバツクリングを防止する幅圧延方法に
関するものである。[Detailed description of the invention] (a) Industrial application field The present invention is a width rolling method for preventing backling of a rolled material that occurs when the rolled material is width rolled by an edger roll in a rolling line for rolled materials. It is related to.
(ロ) 従来技術
従来、連続熱間圧延機列においては、目標とす
る製品幅を得るために、複数のエツジヤ（垂直圧
延機）で幅圧延を行つている。圧延ラインにおけ
る粗圧延機列下流側エツジヤや仕上圧延機列入側
のエツジヤにおいては、圧延材は板幅700〜2000
mmに比較して板厚が20〜80mmと薄いため、幅圧延
時にバツクリングが発生する。(b) Prior Art Conventionally, in a continuous hot rolling mill row, width rolling is performed using a plurality of edgers (vertical rolling mills) in order to obtain a target product width. In the edger on the downstream side of the roughing mill row in the rolling line and the edger on the entry side of the finishing mill row, the rolled material has a plate width of 700 to 2000.
Because the sheet thickness is 20 to 80 mm, buckling occurs during width rolling.
例えば、第７図に示すように、圧延材１をエツ
ジヤ・ロール２で幅圧延をするさいに、板幅Ｗに
比較して板厚Ｈが薄い場合には、バツクリングが
生じ、幅圧延の効果がなくなり、また、後続圧延
期のつつかかり等のトラブルが発生する。そのた
め、粗圧延機列下流側エツジヤや仕上圧延機列入
側エツジヤにおいては、幅圧下量を10〜30mmと少
なくしている。 For example, as shown in FIG. 7, when the rolled material 1 is width-rolled with the edger roll 2, if the thickness H is thinner than the width W, buckling will occur and the effect of width rolling will be reduced. In addition, troubles such as postponement of subsequent pressure may occur. Therefore, in the edger on the downstream side of the roughing mill row and the edger on the entry side of the finishing mill row, the amount of width reduction is reduced to 10 to 30 mm.
一方、近年スラブ（素材）幅の集約、低温圧延
等により、幅圧延条件は苛酷になり、幅圧下量も
増大する傾向にある。さらに、エツジヤによる板
幅制御のため、粗圧延機列下流側や仕上圧延機列
入側でも強力な幅圧延が可能なエツジヤが望まれ
ている。そのために、幅圧延時のバツクリング防
止方法の開発が重要な課題となつている。 On the other hand, in recent years, due to consolidation of slab (material) width, low-temperature rolling, etc., the width rolling conditions have become harsher, and the amount of width reduction has also tended to increase. Furthermore, in order to control the strip width using an edger, an edger that can perform strong width rolling even on the downstream side of the roughing mill row and on the entry side of the finishing mill row is desired. Therefore, the development of a method to prevent buckling during width rolling has become an important issue.
そこで、バツクリング防止方法として、例え
ば、第８図に示すように、エツジヤ・ロール２の
間の中央に圧延材１を上下から挾む１対お押えロ
ールを配置する方法が提案されている（特開昭58
−86902号公報）。この方法は、圧延材１の板幅が
狭い場合には、板幅のほぼ全域にわたり、押えロ
ール３で圧延材を押せ付けることができ、バツク
リング防止効果が機体できる。しかし、圧延材１
の板幅が広い場合には押えロール３とエツジヤ・
ロール２との間の圧延材無拘束部の長さαが長く
なり、この区間で図示のようにバツクリングが発
生し、十分な幅圧下量が確保できない。押えロー
ル３の幅ｂを広くすれば、板幅Ｗの広い圧延材の
バツクリングを防止できる。しかし、その場合、
エツジヤ・ロール開度を狭めることができなくな
り、逆に板幅の狭い圧延材を圧延できなくなる。 Therefore, as a method for preventing buckling, a method has been proposed in which, as shown in FIG. 1978
-86902). In this method, when the width of the rolled material 1 is narrow, the presser roll 3 can press the rolled material over almost the entire width of the material, thereby providing an effect of preventing buckling. However, rolled material 1
If the width of the plate is wide, use the presser roll 3 and edge roller.
The length α of the unrestrained portion of the rolled material between it and the roll 2 becomes long, and buckling occurs in this section as shown in the figure, making it impossible to ensure a sufficient width reduction amount. By increasing the width b of the presser roll 3, buckling of a rolled material having a wide plate width W can be prevented. But in that case,
It becomes impossible to narrow the edger roll opening, and conversely it becomes impossible to roll a rolled material with a narrow width.
(ハ) 発明が解決しようとする問題点
本発明が解決しようとする問題点は、圧延材の
圧延ラインにおいて、圧延材をエツジヤ・ロール
で幅圧延するさいに発生する圧延材のバツクリン
グ種々の板幅について効果的に防止できる幅圧延
方法を得ることにある。(C) Problems to be Solved by the Invention The problems to be solved by the present invention are related to the backling of various plates of the rolled material that occurs when the rolled material is width-rolled by an edger roll in a rolling line for rolled material. An object of the present invention is to obtain a width rolling method that can effectively prevent width.
(ニ) 問題点を解決するための手段
本発明の幅圧延方法は、１対のエツジヤ・ロー
ルで圧延材を幅圧延するにさいし、圧延材板幅方
向に複数に分割され、かつ、板幅方向に移動可能
な上下対をなす押えロールを用いて、圧延材板幅
に応じて前記押えロールの板幅方向位置を調節す
ることにより、エツジヤ・ロール間のロール・バ
イト部の圧延材を押さえることによつて、上記問
題点を解決している。(d) Means for Solving Problems The width rolling method of the present invention is such that when a rolled material is width-rolled with a pair of edger rolls, the rolled material is divided into a plurality of parts in the width direction, and Using a pair of upper and lower presser rolls that are movable in the direction, the position of the presser rolls in the plate width direction is adjusted according to the width of the rolled material plate, thereby holding down the rolled material at the roll bite section between the edger rolls. In this way, the above problems are solved.
上記方法において、圧延材の板幅方向にＮ個に
分割した押えロールの中心間距離Ｓを下記の式で
表される範囲内に設定することが好ましい。 In the above method, it is preferable that the distance S between the centers of the presser rolls, which are divided into N pieces in the width direction of the rolled material, be set within the range expressed by the following formula.
0.7W／Ｎ≦Ｓ≦1.2W／Ｎ
ただし、Ｗ：圧延材の板幅
(ホ) 実施例
第１図は、本発明の方法にもとづく実験装置の
概略側面図であり、実機エツジヤの約1/10縮尺モ
デルである。第２図は、第１図の−線からみ
た正面図である。エツジヤ・ロール２間のロー
ル・バイト部（圧延材かみ込み部）に押えロール
４が配置されている。押えロール４は左右のロー
ル４１，４２および軸受部４３で上方または下方
から支持（図示せず）されている。この押えロー
ル４は上下各２個配置されており、圧延材１の板
幅方向に左右の押えロール中心間距離Ｓを自由に
開閉できる機構となつている。 0.7W/N≦S≦1.2W/N Where, W: Width of rolled material (E) Example Fig. 1 is a schematic side view of an experimental apparatus based on the method of the present invention, and is approximately 1 /10 scale model. FIG. 2 is a front view taken from the - line in FIG. 1. A presser roll 4 is arranged at a roll bite part (rolled material biting part) between the edger rolls 2. The presser roll 4 is supported from above or below by left and right rolls 41, 42 and a bearing portion 43 (not shown). Two presser rolls 4 are arranged on the upper and lower sides, and the mechanism is such that the distance S between the centers of the left and right presser rolls can be freely opened and closed in the width direction of the rolled material 1.
押えロール４の副Ｌは、幅圧延すべき最狭幅の
圧延材１の板幅の1/2より若干短かくしてある。
最狭幅の圧延材を圧延する場合には、第３図に示
すように、押えロール４を板幅方向中央に寄せ
る。さらに、上方の押えロール４は圧下装置（図
示せず）により、上下方向に移動でき、圧延材１
の板厚に応じて押えロール４の開度を設定でき
る。 The sub L of the presser roll 4 is made slightly shorter than 1/2 of the width of the rolled material 1 having the narrowest width to be rolled.
When rolling a material with the narrowest width, the presser roll 4 is moved to the center in the width direction of the material, as shown in FIG. Furthermore, the upper presser roll 4 can be moved vertically by a rolling device (not shown), and the rolled material 1
The opening degree of the presser roll 4 can be set according to the thickness of the plate.
本実験装置の主要寸法を下記に示す。 The main dimensions of this experimental device are shown below.
エツジヤ・ロール径：Ｄ＝80mm
押えロール径：ｄ＝40mm
押えロールの幅：Ｌ＝30mm（片側ロール幅L1＝
10mm）
本装置を用いて実機1/10縮尺の広幅熱間鋼帯
（厚み３mmおよび4.5mm×幅170mm）エツジング圧
延テストを行つた。その結果を第５図に示す。第
５図の横軸は幅圧下量ΔW（エツジヤ入側圧延材
の板幅とエツジヤ・ロール開度との差）を示し、
また、縦軸は左右押えロール中心間距離Ｓを示
す。比較のため押えロールなしの場合も示す。図
中ａ、ｂの曲線は、本テストより得られたバツク
リング発生の有無の結果から求めたバツクリング
限界線を示す。曲線ａは板厚３mmの熱間鋼帯の場
合を、また、曲線ｂは板厚4.5mmの熱間鋼帯の場
合をそれぞれ示す。Edge roll diameter: D = 80mm Presser roll diameter: d = 40mm Presser roll width: L = 30mm (One side roll width L 1 =
10mm) Using this equipment, we conducted an edge rolling test on 1/10 scale wide hot steel strips (thickness 3mm and 4.5mm x width 170mm). The results are shown in FIG. The horizontal axis in Fig. 5 indicates the width reduction amount ΔW (the difference between the width of the rolled material on the edge entrance side and the opening degree of the edger roll),
Further, the vertical axis indicates the distance S between the centers of the left and right presser rolls. For comparison, a case without a presser roll is also shown. Curves a and b in the figure represent buckling limit lines determined from the results of this test to determine whether buckling occurred. Curve a shows the case of a hot-worked steel strip with a plate thickness of 3 mm, and curve b shows the case of a hot-worked steel strip with a plate thickness of 4.5 mm.
左右押えロール中心間距離Ｓ＝30mmの場合、す
なわち、押えロール４を圧延材１の板幅中央部に
寄せた場合のバツクリング限界は第５図により押
えロールなしの場合のバツクリング限界に比較し
て高々1.5〜２倍程度にしか上昇しない。従来法
による圧延材板幅の中央のみを押えるだけでは、
十分な幅圧下量を確保できないことを示してい
る。この場合、バツクリング限界以上の幅圧下を
行えば、押えロール４とエツジヤ・ロール２との
間でバツクリングが発生する。 When the distance between the centers of the left and right presser rolls S = 30 mm, that is, when the presser roll 4 is placed close to the center of the strip width of the rolled material 1, the backling limit is compared to the backling limit when there is no presser roll, as shown in Figure 5. It only increases by 1.5 to 2 times at most. If only the center of the rolled material plate width is pressed using the conventional method,
This indicates that a sufficient width reduction amount cannot be secured. In this case, if the width reduction is performed beyond the buckling limit, buckling will occur between the presser roll 4 and the edger roll 2.
次に、第２図に示すように、押えロール中心間
距離Ｓを広げていけば、押えロール４とエツジ
ヤ・ロール２との間の距離l1が短かくなり、バツ
クリング限界が上昇することが第５図よりわか
る。しかし、押えロール中心間距離Ｓを広げ過ぎ
ると、逆にバツクリング限界は下がる傾向にな
る。これは、押えロール中心間距離Ｓが広過ぎる
ため、左右の押えロールの間の圧延材１の無拘束
部でバツクリングが生じやすくなるためである。 Next, as shown in Fig. 2, if the distance S between the presser roll centers is increased, the distance l1 between the presser roll 4 and the edger roll 2 will be shortened, and the buckling limit will increase. This can be seen from Figure 5. However, if the distance S between the centers of the presser rolls is increased too much, the buckling limit tends to decrease. This is because the distance S between the centers of the presser rolls is too wide, and buckling is likely to occur in the unrestrained portion of the rolled material 1 between the left and right presser rolls.
以上のことより、本テストの圧延材では押えロ
ール中心間距離Ｓは圧延材板幅の0.35〜0.6倍
（すなわちＳ＝60〜100mm）の範囲がバツクリング
防止に対し効果的であり、ほぼ板幅の半分の長さ
が最も効果大であることが判明した。この場合、
バツクリング限界は押えロールなしの場合に比較
して、３〜４倍と顕著に上昇する。 From the above, for the rolled material used in this test, it is effective to prevent buckling when the distance S between the centers of the presser rolls is 0.35 to 0.6 times the width of the rolled material (i.e., S = 60 to 100 mm), which is approximately the width of the material. It was found that half the length was most effective. in this case,
The buckling limit is significantly increased by 3 to 4 times compared to the case without the presser roll.
なお、この場合、押えロール開度は圧延材の板
厚の1.02倍以下に設定するのが望ましい。なぜな
らば、開度を広げ過ぎれば、圧延材が傾きやすく
不安定となり、バツクリングしやすくなるからで
ある。 In this case, it is desirable to set the presser roll opening to 1.02 times or less the thickness of the rolled material. This is because if the opening degree is too wide, the rolled material will tend to tilt and become unstable, making it easy to buckle.
次に、種々の寸法の熱間鋼帯を用いて幅圧延テ
ストを実施し、バツクリング防止に対する押えロ
ールの効果について検討した。その結果を第６図
に示す。第６図の横軸は圧延材の板幅と板厚との
比を示し、また、縦軸は幅圧下率を示す。曲線ａ
は押えロールなしのバツクリング限界を曲線ｂ、
ｃは押えロールを使用した場合のバツクリング限
界をそれぞれ示す。曲線ｂは押えロール間隔Ｓを
30mmにした場合、すなわち、押えロールを中央に
配置した場合であり、また曲線ｃは押えロール間
隔Ｓを最適値、すなわち板幅の約1/2の長さに配
置した場合である。第６図より種々の寸法の圧延
材に対して、本発明による押えロールの配置方法
の場合、バツクリング限界ｃが著しく高いことが
わかる。 Next, width rolling tests were carried out using hot steel strips of various sizes, and the effect of the presser roll on prevention of buckling was investigated. The results are shown in FIG. The horizontal axis in FIG. 6 shows the ratio of the plate width to the plate thickness of the rolled material, and the vertical axis shows the width reduction ratio. curve a
curve b is the buckling limit without presser foot roll,
c indicates the buckling limit when a presser roll is used. Curve b represents the presser roll spacing S.
30 mm, that is, the presser roll is placed in the center, and curve c is the case where the presser roll spacing S is set to the optimum value, that is, the length is approximately 1/2 of the board width. It can be seen from FIG. 6 that for rolled materials of various sizes, the buckling limit c is extremely high in the case of the presser roll arrangement method according to the present invention.
第４図に示すように、板幅方向に３分割した押
えロール４を用いて幅圧延テストを行つた。その
結果、板幅方向に３分割したそれぞれの押えロー
ルの中心間距離Ｓは、圧延材板幅の0.23倍から
0.4倍の範囲内で、圧延材のバツクリング防止効
果が高く、２分割タイプの押えロールの場合に比
較して、バツクリング限界がさらに30〜40％上昇
することが判明した。 As shown in FIG. 4, a width rolling test was conducted using a presser roll 4 divided into three parts in the sheet width direction. As a result, the center-to-center distance S of each presser roll divided into three parts in the sheet width direction was determined to be 0.23 times the width of the rolled material sheet.
It was found that within the range of 0.4 times, the buckling prevention effect of the rolled material is high, and the buckling limit is further increased by 30 to 40% compared to the case of a two-part type presser roll.
以上のことより、板幅方向に複数に分割したそ
れぞれの押えロールの中心間距離Ｓは下式で表わ
される範囲に設定して幅圧延を行えば、バツクリ
ング防止効果が大きいと言える。 From the above, it can be said that if width rolling is performed with the center-to-center distance S of each presser roll divided into a plurality of parts in the sheet width direction set within the range expressed by the following formula, the buckling prevention effect is great.
以上のことより、板幅方向に複数に分割したそ
れぞれの押えロールの中心間距離Ｓは下式で表わ
される範囲に設定して幅圧延を行えば、バツクリ
ング防止効果が大きいと言える。 From the above, it can be said that if width rolling is performed with the center-to-center distance S of each presser roll divided into a plurality of parts in the sheet width direction set within the range expressed by the following formula, the buckling prevention effect is great.
0.7W／Ｎ≦Ｓ≦1.2W／Ｎ
Ｎ：板幅方向に分割した押えロールの分割個数
Ｗ：圧延材の板幅
上記のように、押え、ロールの分割個数Ｎと適
正な押えロール中心間距離Ｓとが表されるが、分
解した押えロールをエンジヤ・ロール間の板幅方
向中央し寄せたとき、最狭幅の圧延材を圧延でき
るようにする必要がある。したがつて、分割個数
を多くすれば、個々の押えロールの幅が短かくな
るため、押えロールの支持が不安定となりやす
く、また、機構も複雑となるため、実用上押えロ
ールの分割個数は２または３が望望ましい。 0.7W/N≦S≦1.2W/N N: Number of presser rolls divided in the sheet width direction W: Width of the rolled material As shown above, the number of presser and roll divisions N and the appropriate distance between the centers of the presser rolls. Although the distance S is expressed, it is necessary to be able to roll a material with the narrowest width when the disassembled presser rolls are moved to the center in the sheet width direction between the engineer rolls. Therefore, if the number of divisions is increased, the width of each presser roll becomes shorter, which tends to make the support of the presser roll unstable, and the mechanism becomes complicated. Therefore, in practical terms, the number of divisions of the presser roll is 2 or 3 is desirable.
本発明の方法を実機連続熱間圧延機列の仕上圧
延機前のエツジヤに適用した。その結果、従来押
えロールなしの場合の板幅1800mm×板厚35mmの熱
間鋼帯のパツクリング限界幅圧下量は14mmであつ
たものが、幅圧下量が56mm（従来の４倍）でもバ
ツクリングが発生しないことを確認した。 The method of the present invention was applied to the edger in front of the finishing mill of an actual continuous hot rolling mill train. As a result, the limit width reduction for backing of a hot-work steel strip of 1800 mm width x 35 mm thickness without a presser roll was 14 mm, but even with a width reduction of 56 mm (4 times the conventional value), backing was reduced. We have confirmed that this does not occur.
(ヘ) 効果
本発明の方法によれば、押えロールのバツクリ
ング防止効果は大きく、連続熱間延機列下流側エ
ツジヤの幅圧下量は相当増大させることができ、
したがつて下流側エツジヤで強力な板幅制御が可
能となる。(F) Effects According to the method of the present invention, the effect of preventing buckling of the presser roll is large, and the width reduction amount of the edger on the downstream side of the continuous hot rolling mill row can be considerably increased.
Therefore, powerful plate width control is possible at the edger on the downstream side.
本発明の方法は連続熱間圧延機列ばかりではな
く、厚板圧延機にも適用できる。 The method of the invention is applicable not only to continuous hot rolling mills but also to plate rolling mills.
第１図は本発明の方法を実施する実験装置の概
略側面図。第２図は第１図の−線からみた正
面図。第３図は第２図の変更例を示す正面図。第
４図は第２図のさらに別の変更例を示す正面図。
第５図は幅圧下量とロール中心間距離との関係を
示すグラフ。第６図は板幅対板厚比と圧下率との
関係を示すグラフ。第７図および第８図は従来法
による鋼帯のバツクリング状態を示す正面図。
１：鋼帯、２：エツジヤ・ロール、４：押えロ
ール。
FIG. 1 is a schematic side view of an experimental apparatus for carrying out the method of the present invention. FIG. 2 is a front view taken from the - line in FIG. 1. FIG. 3 is a front view showing a modification of FIG. 2. FIG. 4 is a front view showing still another modification of FIG. 2.
FIG. 5 is a graph showing the relationship between the width reduction amount and the distance between roll centers. FIG. 6 is a graph showing the relationship between the plate width to plate thickness ratio and the rolling reduction. FIGS. 7 and 8 are front views showing buckling states of steel strips according to the conventional method. 1: Steel strip, 2: Edger roll, 4: Presser roll.
Claims (1)
るにさいし、圧延材板幅方向に複数に分割され、
かつ、板幅方向に移動可能な上下対をなす押えロ
ールを用いて、圧延材板幅に応じて前記押えロー
ルの板幅方向位置を調節することにより、エツジ
ヤ・ロール間のロール・バイト部の圧延材を押さ
えることを特徴とした幅圧延方法。 ２ 圧延材の板幅方向にＮ個に分割した押えロー
ルの中心間距離Ｓを下記の式で表される範囲内に
設定することを特徴とした特許請求の範囲第１項
に記載の幅圧延方法。 0.7W／Ｎ≦Ｓ≦1.2W／Ｎ ただし、Ｗ：圧延材の板幅[Claims] 1. When a rolled material is width-rolled by a pair of edger rolls, the rolled material is divided into a plurality of parts in the width direction,
In addition, by using a pair of upper and lower presser rolls that are movable in the sheet width direction and adjusting the position of the presser rolls in the sheet width direction according to the width of the rolled material sheet, the roll bite portion between the edger rolls can be adjusted. A width rolling method characterized by holding down the rolled material. 2. Width rolling according to claim 1, characterized in that the distance S between the centers of the presser rolls divided into N pieces in the width direction of the rolled material is set within the range expressed by the following formula: Method. 0.7W/N≦S≦1.2W/N Where, W: Width of rolled material
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14748885A JPS629703A (en) | 1985-07-04 | 1985-07-04 | Cross rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14748885A JPS629703A (en) | 1985-07-04 | 1985-07-04 | Cross rolling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS629703A JPS629703A (en) | 1987-01-17 |
| JPH059162B2 true JPH059162B2 (en) | 1993-02-04 |
Family
ID=15431523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14748885A Granted JPS629703A (en) | 1985-07-04 | 1985-07-04 | Cross rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629703A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302115A (en) * | 2013-06-17 | 2013-09-18 | 大连华锐重工集团股份有限公司 | Two-roll vertical roll mill provided with hydraulic horizontal press rolls |
| CN114570766A (en) * | 2022-03-15 | 2022-06-03 | 山西云时代太钢信息自动化技术有限公司 | Real-time screw-down adjusting device of finishing mill and control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019000Y2 (en) * | 1971-10-01 | 1975-06-10 | ||
| JPS56111510A (en) * | 1980-02-08 | 1981-09-03 | Sumitomo Metal Ind Ltd | Vertical rolling mill |
| JPS57168708A (en) * | 1981-04-08 | 1982-10-18 | Ishikawajima Harima Heavy Ind Co Ltd | Width rolling device |
| JPS57168707A (en) * | 1981-04-08 | 1982-10-18 | Ishikawajima Harima Heavy Ind Co Ltd | Edger having buckling preventing device |
| JPS5886902A (en) * | 1981-11-17 | 1983-05-24 | Kawasaki Steel Corp | Broadside rolling device |
-
1985
- 1985-07-04 JP JP14748885A patent/JPS629703A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS629703A (en) | 1987-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |