JPS6092004A - Strip surface roughness control method - Google Patents
Strip surface roughness control methodInfo
- Publication number
- JPS6092004A JPS6092004A JP58201201A JP20120183A JPS6092004A JP S6092004 A JPS6092004 A JP S6092004A JP 58201201 A JP58201201 A JP 58201201A JP 20120183 A JP20120183 A JP 20120183A JP S6092004 A JPS6092004 A JP S6092004A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- work rolls
- rolling
- surface roughness
- rolling load
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- 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
- B21B2001/228—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 skin pass rolling or temper rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
- B21B2275/05—Speed difference between top and bottom rolls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はストリップの表面粗度を制御する方法に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling the surface roughness of a strip.
調質圧延機でストリップを仕上圧延する揚台、従来はロ
ール表面の粗度を巽にした数種のワークロールを用意し
ておき、製品に要求される表面粗度のワークロールに適
宜組替えることによりストリップの表面をオ■く仕上げ
たり、細かく仕上げたりしている。このように従来はス
トリップの表面粗度を制御するに際し、数種のワークロ
ールを取揃えておくので、ランニングコストが高く、不
経済であるという問題があった。Conventionally, several types of work rolls with different roll surface roughnesses are prepared for the lifting platform used to finish roll the strip in a temper rolling mill, and the work rolls are changed as appropriate to the work rolls with the surface roughness required for the product. As a result, the surface of the strip is finely finished or finely finished. In this way, in the past, several types of work rolls were prepared in order to control the surface roughness of the strip, which resulted in high running costs and was uneconomical.
本発明はワークロールを交換することなくストリップの
表面粗度を任意に制御できるストリップ表面粗度制御方
法を提供するためになしたものである。The present invention has been made in order to provide a strip surface roughness control method that can arbitrarily control the surface roughness of a strip without replacing work rolls.
以下本発明の実施例を図面により説明する。Embodiments of the present invention will be described below with reference to the drawings.
本発明は巻付けＰＶ−Ｅ圧延の特性の一つである伸び率
一定の効果を利用してストリップの表面粗度を制御する
。The present invention utilizes the effect of constant elongation, which is one of the characteristics of wrapped PV-E rolling, to control the surface roughness of the strip.
第１図は以−Ｖの巻付けＰＶ−Ｅ圧延の原理を示すもの
で、周速を異にする１対のワークロール１．２にストリ
ップ３を巻付け、ワークロール１．２の周速比、入側ス
トリップと出側ストリップの速度比及び板厚比を
肢−ＶＬ、め−
ん、 Ｖｏ ｖ。 ・曲・（１）
ＶｏＨｉバ速側ワークロール１の周速
ＶＢ高速側ワーク０−ル２の周速
ｖｏ：入側ストリップ速度
内；出側ストリップ速度
ん０：入側ストリップ板厚
／Ｌ１；出側ストリップ板厚
に制御し、ストリップ３を引張りながら圧延する。Fig. 1 shows the principle of PV-E rolling with the following V winding.A strip 3 is wound around a pair of work rolls 1.2 having different circumferential speeds, and the circumferential speed of the work rolls 1.2 is The ratio, the speed ratio and the plate thickness ratio of the inlet strip and the outlet strip are VL, ME, and VOV.・Song・(1) VoHi Peripheral speed of work roll 1 on high speed side VB Peripheral speed of work roll 2 on high speed side vo: Within strip speed on input side; Strip speed on output side 0: Strip thickness on input side/L1; The thickness of the strip on the exit side is controlled, and the strip 3 is rolled while being pulled.
この圧延方法によればストリップ３の伸びはワークロー
ル１，２の周速比に一致するから、変形抵抗・摩擦係数
および張力の変動、ロール偏心、板幅精度に影響せず、
複雑な制御装置は必要としない。According to this rolling method, the elongation of the strip 3 matches the circumferential speed ratio of the work rolls 1 and 2, so it does not affect deformation resistance, friction coefficient, tension variation, roll eccentricity, or strip width accuracy.
No complicated control equipment is required.
以上の効果は、巻付は部でストリップのスリップが起こ
らない条件下で達成されるもので、ロールギャップ入側
の張力ｔｏと出側の張力ｔ１は外から加えた張力ｔｏ
’＊ ｔ＋ ’に対し次式の範囲で変動し、板厚の変動
をなくしている（μは巻付は部の摩擦係数）。The above effect is achieved under conditions where the strip does not slip in the winding section, and the tension to on the roll gap entry side and the tension t1 on the exit side are the tension to applied from the outside.
For '*t+', it fluctuates within the range of the following formula, eliminating fluctuations in plate thickness (μ is the friction coefficient of the wrapping area).
ｔｏ’ｅ−μθ≦ｔｏ≦ｔｏ’ｅμθ ・・曲（りｔ＋
’ｅ−μθ≦ｔ１≦ｔ＋’ｅμθ ・・・・・・（３）
次に巻付けＰＶ−Ｅ圧延における伸び率一定の効果を第
２図により説明する。第２図は板厚０．５＋ｎ、異速比
５％の条件でＰＶ−Ｅ圧延機により調質圧延を行った実
験例を示すもので、図示のように巻付けＰＶ−Ｅ圧延で
は完全Ｐ■状態にて圧延荷重が略垂直に立上がり、圧延
荷重に対して伸び率は一定に保たれる。この伸び率一定
の範囲αは巻付は部の摩擦係数μ、巻付は角θが大きい
程広い。to'e-μθ≦to≦to'eμθ...song (rit+
'e−μθ≦t1≦t+'eμθ ・・・・・・(3)
Next, the effect of keeping the elongation constant during wrapping PV-E rolling will be explained with reference to FIG. Figure 2 shows an experimental example in which temper rolling was performed using a PV-E rolling mill under the conditions of a plate thickness of 0.5+n and a different speed ratio of 5%. In state (2), the rolling load rises almost vertically, and the elongation rate remains constant with respect to the rolling load. The range α in which the elongation rate is constant is wider as the friction coefficient μ of the winding portion and the winding angle θ are larger.
本発明は以上のＰＶ−Ｅ圧延機を調質圧延に使用して伸
び率一定の範囲αで圧延荷重を変化させる。圧延荷重を
大きくするとストリップの表面粗度はワークロール１．
２の表面粗度に近づくようになり、しがもこの場合、ス
トリップ３の速度とワークロール１．２の周速とが異な
っている関係でワークロール１，２の表面とストリップ
３の表面が擦られるから、ストリップ３の表面は滑らか
に仕上がる。反対に圧延荷重を小さくすると、ストリッ
プ３表面に対するワークロール１，２の表面粗度の影響
は少なくなるため、ストリップ３の表面は粗く仕上がる
。このように圧延荷重を調整することでストリップの表
面粗度を制御する。In the present invention, the above-mentioned PV-E rolling mill is used for temper rolling, and the rolling load is varied within a range α in which the elongation rate is constant. When the rolling load is increased, the surface roughness of the strip becomes 1.
However, in this case, the surface roughness of the work rolls 1 and 2 and the surface of the strip 3 are different because the speed of the strip 3 and the circumferential speed of the work rolls 1 and 2 are different. Because of the rubbing, the surface of the strip 3 is finished smoothly. On the other hand, when the rolling load is reduced, the influence of the surface roughness of the work rolls 1 and 2 on the surface of the strip 3 is reduced, so that the surface of the strip 3 is finished rough. By adjusting the rolling load in this way, the surface roughness of the strip is controlled.
本発明によれば、ワークロールを交換することなくスト
リップ表面粗度を任意に制御できるのでランニングコス
トを減少でき、経済的である、という優れた効果を奏し
得る。According to the present invention, since the strip surface roughness can be arbitrarily controlled without replacing the work rolls, running costs can be reduced and economical effects can be achieved.
第１図は本発明の方法を実施するのに使用する異速圧延
機の説明図、第２１！ｌは異速圧延による圧延荷重と伸
び率との関係を示す縮図である。
１．２・・・ワーク０−ル、３・・・ストリップ、α・
・・圧延荷重の変動に対する伸び率一定の範囲。
特 許 出 願 人
石川島播磨重工業株式会社
特 許 出 願 人
日本鋼管株式会社FIG. 1 is an explanatory diagram of a different speed rolling mill used to carry out the method of the present invention, No. 21! 1 is a miniature diagram showing the relationship between rolling load and elongation rate due to different speed rolling. 1.2...Work 0-ru, 3...Strip, α・
・・Elongation rate is within a constant range with respect to fluctuations in rolling load. Patent application: Hitoshi Kawajima Harima Heavy Industries Co., Ltd. Patent application: Nippon Steel Tube Co., Ltd.
Claims (1)
を巻付け、伸び率一定の範囲で圧延荷重を変化させるこ
とによりストリップの表面粗度を制御することを特徴と
するストリップ表面粗度制御方法。1) Strip surface roughness control characterized by controlling the surface roughness of the strip by winding the strip around a pair of work rolls with different circumferential speeds and changing the rolling load within a constant elongation rate range. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58201201A JPS6092004A (en) | 1983-10-27 | 1983-10-27 | Strip surface roughness control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58201201A JPS6092004A (en) | 1983-10-27 | 1983-10-27 | Strip surface roughness control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6092004A true JPS6092004A (en) | 1985-05-23 |
| JPS6365401B2 JPS6365401B2 (en) | 1988-12-15 |
Family
ID=16437019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58201201A Granted JPS6092004A (en) | 1983-10-27 | 1983-10-27 | Strip surface roughness control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6092004A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61276703A (en) * | 1985-05-30 | 1986-12-06 | Ishikawajima Harima Heavy Ind Co Ltd | Method for controlling shape of strip |
| JPS6234603A (en) * | 1985-08-09 | 1987-02-14 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling method |
-
1983
- 1983-10-27 JP JP58201201A patent/JPS6092004A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61276703A (en) * | 1985-05-30 | 1986-12-06 | Ishikawajima Harima Heavy Ind Co Ltd | Method for controlling shape of strip |
| JPS6234603A (en) * | 1985-08-09 | 1987-02-14 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6365401B2 (en) | 1988-12-15 |
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