JPS6186005A - Rolling method and its installation - Google Patents
Rolling method and its installationInfo
- Publication number
- JPS6186005A JPS6186005A JP20676284A JP20676284A JPS6186005A JP S6186005 A JPS6186005 A JP S6186005A JP 20676284 A JP20676284 A JP 20676284A JP 20676284 A JP20676284 A JP 20676284A JP S6186005 A JPS6186005 A JP S6186005A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- mill
- rolls
- strip
- stands
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/222—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a rolling-drawing process; in a multi-pass mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/227—Surface roughening or texturing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は、ストリップ表面にダル目を付は得るようにし
た圧延方法及びその装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a rolling method and an apparatus therefor for forming a dull pattern on the surface of a strip.
ストリップにダル目を付けるため、従来はタンデム冷間
圧延機最終スタンドの一対のワークロールにダルロール
を用い、該一対のワークロールの周速を等速にして圧延
を行っている。Conventionally, in order to form a dull mark on the strip, dull rolls are used as a pair of work rolls in the final stand of a tandem cold rolling mill, and rolling is performed with the circumferential speed of the pair of work rolls being constant.
しかし、上述の手段では、最終スタンドではダルロール
を使用するためワークロールとストリップとの摩擦係数
が高くなってフリクションヒルが大きくなるため圧延力
が増大して圧下率をそれ程取れず、せいぜい７〜８％の
圧下率であった。従ってストリップを所定の板厚に圧延
するためにはスタンド数が多くなるという問題があった
。However, with the above method, since a dull roll is used in the final stand, the coefficient of friction between the work roll and the strip increases, resulting in a large friction hill, which increases the rolling force and makes it difficult to obtain a reduction ratio of 7 to 8 at most. %. Therefore, there is a problem in that the number of stands increases in order to roll the strip to a predetermined thickness.
本発明では、最終パスでブライトロールを使用した圧延
機の下流側に一対のワークロールの周速を異にする異速
圧延機を設置し、該異速圧延機のワークロールをダルロ
ールとしている。In the present invention, a different speed rolling mill in which a pair of work rolls have different circumferential speeds is installed downstream of a rolling mill that uses bright rolls in the final pass, and the work rolls of the different speed rolling mill are dull rolls.
従って、本発明では、ストリップはブライトロールを使
用した圧延機で圧下された後、一対の周速が異なるダル
ロールにより圧下されると共にその表面にダル目が付け
られる。Therefore, in the present invention, the strip is rolled down by a rolling mill using bright rolls, and then rolled down by a pair of dull rolls having different circumferential speeds, and dull marks are formed on the surface of the strip.
以下、本発明の実施例を添付図面を参照しつつ説明する
。Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の一実施例で１図中１はブライトロール
である一対のワークロールｌａ、ｌｂの周速が等しい圧
延機、２は圧延ａｌｌの下流側に設置され且つ一対のワ
ークロール２ａ 、 ２ｂの周速が異なる異速圧延機で
あり、ワークロール２ａ。FIG. 1 shows an embodiment of the present invention. In the figure, 1 is a rolling mill with a pair of bright rolls la and lb having the same circumferential speed, and 2 is a pair of work rolls installed on the downstream side of the rolling all. It is a different speed rolling mill in which the circumferential speeds of 2a and 2b are different, and the work roll 2a.
２ｂは表面に梨地加工を施したダルロールにより構成さ
れている。又３は巻取機、４はデフレクタ−ロールであ
る。2b is composed of a dull roll with a satin finish on the surface. Further, 3 is a winder, and 4 is a deflector roll.
斯かる圧延装置では、ストリップＳはブライトロールを
用いた圧延機１によって１１１１次圧下され、しかる後
興速圧延機２のワークロール２ａ。In such a rolling apparatus, the strip S is rolled 1111 times by a rolling mill 1 using bright rolls, and then transferred to a work roll 2a of a rolling mill 2.
２ｂに所定の角度で巻付けられて圧下が行われると共に
ワークロール２ａ 、 ２ｂによってストリップ表面に
ダル目が付され、次いで巻取機３に巻取られる。Ｎｉｌ
［延機ではフリクションヒルが発生しないので圧延荷重
が少なくてすむ。2b at a predetermined angle, the strip is rolled at a predetermined angle, and the work rolls 2a and 2b make a dull mark on the surface of the strip.Then, the strip is wound on a winder 3. Nil
[Since friction hills do not occur in the rolling mill, the rolling load can be reduced.
従って、従来ブライトロールを用いた圧延機１を使って
ストリップＳにダル目を付ける圧延は４段圧延機が必要
であったものが第１図の２に示すように２段圧延機です
むようにできた。Therefore, the conventional rolling mill 1 using bright rolls that required a 4-high rolling mill to form a dull mark on the strip S can now be completed with a 2-high rolling mill as shown in 2 in Figure 1. Ta.
なお、異速圧延機２による圧延の圧下は圧下４１．１〜
ｌＯ％とすることにより、安定してダル目がストリップ
Ｓにプリントされることが確証されている。すなわち、
圧下ｇｏ、ｔ％以下ではワークロール２ａ 、 ２ｂの
砥石目、ダル目のプリント率が不足すると共に圧下率が
少くストリップの形状制御が困難である。Note that the rolling reduction by the different speed rolling mill 2 is from 41.1 to 41.1.
It has been confirmed that dots are stably printed on the strip S by setting the value to 10%. That is,
If the rolling reduction is less than go, t%, the print rate of the grindstone grains and dull grains of the work rolls 2a and 2b will be insufficient, and the rolling reduction ratio will be small, making it difficult to control the shape of the strip.
又圧下ＪＪ＜１０％以上になると、ロールの発熱による
ストリップ形状の乱れが大きくなり、圧延荷重及び圧延
トルクが大きくなるため、２段圧延機では圧下が不可能
になり、設ａｆが増大するためメリットがなくなる。In addition, when the rolling reduction JJ is less than 10%, the strip shape becomes more disturbed due to the heat generated by the rolls, and the rolling load and rolling torque increase, making rolling impossible in a two-high rolling mill and increasing the design af. There will be no benefit.
更に、ストリップ３をワークロール２ａ 、 ２ｂに巻
き付けることによりベルトフリクションの効果を利用し
て出鋼張力ｔ、よりも入側張力ｔ、の方を大きくとれる
（ １． ） １．）。一般に巻取機３の張力ｔ、はコ
イルの後処理の関係及びコイルの巻締力の＠減の目的か
ら一般に応力でＷｔｋＪ＋７ｍ′以下に押えられている
。従って、ストリップ３をロールに巻付けることで１．
＞ １．にできることは圧延機ｌの出鋼張力を大幅に
高められることを意味する。Furthermore, by winding the strip 3 around the work rolls 2a and 2b, the input tension t can be made larger than the tapping tension t by utilizing the effect of belt friction (1.) 1. ). In general, the tension t of the winder 3 is generally suppressed to WtkJ+7 m' or less due to stress due to the post-processing of the coil and the purpose of reducing the winding force of the coil. Therefore, by winding the strip 3 onto a roll, 1.
> 1. This means that the tapping tension of the rolling mill can be greatly increased.
以上のことにより、従来ストリップＳにダル目を付ける
役目を果さなかった最終スタンドの圧延様において、ワ
ークロールｌａ、ｌｂをブライトロールにできること及
び前方張力を高められることにより、３０〜４０％の圧
下率が取れるようになった。このことは従来より４段圧
延機が１スタンド分削減できたことを意味する。As a result of the above, in the rolling process of the final stand, which conventionally did not play the role of adding dull marks to the strip S, the work rolls la and lb can be made into bright rolls, and the front tension can be increased, resulting in a reduction of 30 to 40%. It became possible to obtain the rolling reduction rate. This means that the number of four-high rolling mills can be reduced by one stand compared to the conventional method.
第２図は本発明の他の実施例で、…１記実施例では異速
圧延機を巻付は圧延機としているのに対し、本実施例で
はストリップＳを周速の異なるワークロール２ａ 、
２ｂに対し巻付けることなく通板するようにしたもので
ある。斯かる構成としても上記実施例と同様、昇速圧延
ａ１２でストリップＳを軽量Ｑ圧延するだけでその表面
にダル目をイ寸けることができる。FIG. 2 shows another embodiment of the present invention. In the first embodiment, the winding machine is used as a rolling mill at different speeds, whereas in this embodiment, the strip S is rolled on work rolls 2a with different circumferential speeds,
The plate is passed through the plate without being wrapped around the plate 2b. Even with such a configuration, as in the above embodiment, it is possible to create a burr on the surface of the strip S by simply subjecting it to lightweight Q-rolling in the step-up rolling a12.
なお、本発明は上述の実施例に限定されるものではなく
、本発明の要旨を逸脱しない範囲内で種々変更を加え得
ることは勿論である。It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.
本発明の圧延方法及びその装置によれば、ストリップに
ダル目を付ける場合に該最終スタンドの圧延機で高圧下
を行えるため、全体として圧延機スタンド数が減少し、
設備費、運転維持費が安価となる、等掻々の優れた効果
を奏し得る。According to the rolling method and apparatus thereof of the present invention, when forming a dull mark on the strip, high rolling can be performed in the rolling mill of the final stand, so the number of rolling mill stands is reduced as a whole;
It can bring about other excellent effects such as lower equipment costs and operation and maintenance costs.
【図面の簡単な説明】
第１図は本発明の一実施例の説明図、第２図は本発明の
他の実施例の説明図である。
図中１はブライトロールを用いた圧延機、２は異速圧延
機、２ａ 、 ２ｂはワークロール、３は巻取機を示す
。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of one embodiment of the present invention, and FIG. 2 is an explanatory diagram of another embodiment of the present invention. In the figure, 1 is a rolling mill using bright rolls, 2 is a different speed rolling mill, 2a and 2b are work rolls, and 3 is a winding machine.
Claims (1)
終段において異速圧延を行なうことにより圧下と表面粗
度調整を同時に行なうことを特徴とする圧延方法。 ２）最終パスでブライトロールを使用した圧延機の下流
側に周速が異なる一対のロールを備えた異速圧延機を配
設し、該異速圧延機のロールをダルロールとしたことを
特徴とする圧延装置。[Scope of Claims] 1) A rolling method characterized by simultaneously performing rolling reduction and surface roughness adjustment by performing different speed rolling in the last stage of a rolling mill having at least a plurality of rolling stands. 2) A different speed rolling mill equipped with a pair of rolls having different circumferential speeds is disposed downstream of a rolling mill that uses bright rolls in the final pass, and the rolls of the different speed rolling mill are dull rolls. rolling equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20676284A JPS6186005A (en) | 1984-10-02 | 1984-10-02 | Rolling method and its installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20676284A JPS6186005A (en) | 1984-10-02 | 1984-10-02 | Rolling method and its installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6186005A true JPS6186005A (en) | 1986-05-01 |
Family
ID=16528665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20676284A Pending JPS6186005A (en) | 1984-10-02 | 1984-10-02 | Rolling method and its installation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6186005A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03146202A (en) * | 1989-11-01 | 1991-06-21 | Sumitomo Metal Ind Ltd | Cold rolling method for strip |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56139203A (en) * | 1980-03-31 | 1981-10-30 | Nippon Kokan Kk <Nkk> | Cold rolling apparatus |
| JPS56144803A (en) * | 1980-04-11 | 1981-11-11 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for differential-speed rolling work |
-
1984
- 1984-10-02 JP JP20676284A patent/JPS6186005A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56139203A (en) * | 1980-03-31 | 1981-10-30 | Nippon Kokan Kk <Nkk> | Cold rolling apparatus |
| JPS56144803A (en) * | 1980-04-11 | 1981-11-11 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for differential-speed rolling work |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03146202A (en) * | 1989-11-01 | 1991-06-21 | Sumitomo Metal Ind Ltd | Cold rolling method for strip |
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