JPH02303618A - Method for magnifying ring diameter of hot rolled wire - Google Patents
Method for magnifying ring diameter of hot rolled wireInfo
- Publication number
- JPH02303618A JPH02303618A JP12488989A JP12488989A JPH02303618A JP H02303618 A JPH02303618 A JP H02303618A JP 12488989 A JP12488989 A JP 12488989A JP 12488989 A JP12488989 A JP 12488989A JP H02303618 A JPH02303618 A JP H02303618A
- Authority
- JP
- Japan
- Prior art keywords
- rolling mill
- ring diameter
- wire rod
- speed
- laying head
- 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
- 238000000034 method Methods 0.000 title claims description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 50
- 238000010586 diagram Methods 0.000 description 6
- 238000002407 reforming Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- B21B37/72—Rear end control; Front end control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B2045/0236—Laying heads for overlapping rings on cooling conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/006—Pinch roll sets
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〕
本発明は熱間圧延線材を、レイングヘッドによってリン
グ状に形成する際、圧延機又はピンチロールを通過した
時期に生ずるリング径の急激な縮径を拡大する方法に関
するものである。Detailed Description of the Invention [Industrial Application Field] The present invention is directed to the rapid reduction of the ring diameter that occurs when a hot rolled wire rod passes through a rolling mill or pinch rolls when it is formed into a ring shape using a laying head. This relates to a method of enlarging the diameter.
一般に、熱間圧延線材の圧延設備では、第３図に示す加
熱炉（８）から抽出された鋼片は、粗圧延機列における
粗圧延段階（９）、続く中間圧延機列による中間圧延段
階（１）、仕上圧延機列における仕上圧延段階（２）に
よって、所定の形状に圧延さて線材（３）となる、この
線材（３）は、水冷装Ｗｔ（１０）において所要温度ま
で冷却後、ピンチロール（４）を経て、レイングヘッド
（５）でリング状に形成される。このリング状にされた
線材（３）は、ステルモアコンベア（１１）で冷却され
ながら搬送され、セイル（１２）及びコイルブレー）
（１３）を有するリフォーミングタブ（１４）内に線材
コイルとして集束される。Generally, in rolling equipment for hot-rolled wire rods, the steel billet extracted from the heating furnace (8) shown in Fig. 3 undergoes a rough rolling stage (9) in a row of rough rolling mills, followed by an intermediate rolling stage in a row of intermediate rolling mills. (1) In the finish rolling stage (2) in the finish rolling mill row, the wire rod (3) is rolled into a predetermined shape. After cooling the wire rod (3) to the required temperature in the water cooling system Wt (10), After passing through a pinch roll (4), it is formed into a ring shape by a laying head (5). This ring-shaped wire rod (3) is conveyed while being cooled by a stellmore conveyor (11), and is transferred to a sail (12) and a coil brake.
(13) is bundled as a wire coil into a reforming tab (14).
線材（３）をリング状に形成する装置としては、第４図
にその概略を示すように線材（３）を挿通する螺旋状パ
イプ（１５）を有し、レイングヘッド駆動モータ（１６
）でスピンドル（１７）および減速機（１８）を介して
軸心回りに回転されるようになっている。かかる装置に
より放出される線材のリング径は、レイングヘッド（５
）の入側の線材速度及υレイングヘッドの回転数により
変化するものである。The apparatus for forming the wire (3) into a ring shape has a spiral pipe (15) through which the wire (3) is inserted, as schematically shown in FIG.
) and is rotated around its axis via a spindle (17) and a speed reducer (18). The ring diameter of the wire discharged by such a device is the same as the laying head (5
) varies depending on the wire speed on the entry side and the number of rotations of the laying head.
即ち、第２中間圧延１！（ｌａ）と、仕上圧延Ｉ！（２
ａ）との間は圧延中にループ制御を行っており、仕上圧
延機（２ａ）の速度変化分またはピンチロール（４）の
開時期間に対応して、レイングヘノド（５）の回転速度
基準を変化させる制御によって、一定のリング径で放出
される。That is, second intermediate rolling 1! (la) and finish rolling I! (2
Loop control is performed during rolling between a) and the rotational speed standard of the rolling head (5) is adjusted according to the speed change of the finishing mill (2a) or the opening period of the pinch rolls (4). By varying the control, a constant ring diameter is released.
〔発明が解決しようとするｉ！Ｉ！！１）上記従来の方
法においては、一定のリング径が形成されているのは、
仕上圧延機またはピンチロールが閉の状態になっている
時点までであって、ピンチロール（４）が開になった以
降は、レイングヘッド（５）の螺旋状パイプ（１５）内
を経過することにより、その内部を経過する線材との接
触による摩擦や、所定の曲率を有するコイル状に形成す
る際の捻じつと曲げを受けて、線材速度は失速しリング
径は急激に縮小する。[The invention tries to solve i! I! ! 1) In the above conventional method, a constant ring diameter is formed because:
Until the finishing mill or the pinch rolls are closed, and after the pinch rolls (4) are open, the rolling head (5) passes through the spiral pipe (15). As a result, the wire speed stalls and the ring diameter rapidly decreases due to friction due to contact with the wire passing through the inside and twisting and bending during formation into a coil having a predetermined curvature.
このように、リング径が縮小した状態で搬送されると搬
送コンベアの終端に配置されたリフォーミングタブ（１
４）に対する落下時に、コイルがセイル（１２）に引っ
掛かって円滑な送り込みが出来ない問題点が生じ、製造
ライン全体の停止を招くことになる。さらにはコイルの
荷姿が悪くなるのみならず、生産性を阻害していた。
本発明は上記の課題に鑑み、極めて優れたリング径を得
ることのできる熱間圧延線材のリング径拡大方法を提供
するものである。In this way, when the ring is transported with its diameter reduced, the reforming tab (1
4), the coil gets caught in the sail (12) and cannot be fed smoothly, resulting in a stoppage of the entire production line. Furthermore, not only did the packaging of the coil deteriorate, but it also hindered productivity.
In view of the above-mentioned problems, the present invention provides a method for enlarging the ring diameter of a hot rolled wire rod by which an extremely excellent ring diameter can be obtained.
本発明に係る熱間圧延線材のリング径拡大方法の特徴と
するところは、熱間圧延線材を連続してリング状に形成
し、放出される線材のリング径を拡大する方法であって
、中間圧延機列による中間圧延段階を線材が通過した時
点で、仕上圧延機の速度を昇速させ、次いで前記線材が
仕上圧延機を通過した直後、又はピンチロールの開度時
期に対応してレイングヘッドの回転数を減速させる用に
したした点にある。The feature of the method for enlarging the ring diameter of a hot rolled wire rod according to the present invention is that the hot rolled wire rod is continuously formed into a ring shape, and the ring diameter of the ejected wire rod is expanded. When the wire rod has passed through the intermediate rolling stage by the rolling mill row, the speed of the finishing mill is increased, and then immediately after the wire rod has passed through the finishing mill, or in accordance with the timing of the opening of the pinch rolls, the rolling head is This is because it is designed to reduce the rotation speed of the engine.
以下本発明方法を図示の実施例に従って説明すると、第
１図は第二中間圧延機からレイングヘッドまでの工程を
示す概略図である。The method of the present invention will be described below according to the illustrated embodiment. FIG. 1 is a schematic diagram showing the steps from the second intermediate rolling mill to the laying head.
第二中間圧延１１１（ｌａ）、仕上圧延ＩＩ（２ａ）を
経て圧延された線材（３）は、ピンチロール（４）によ
つて押さえられ、レイングヘッド（５）でリング状に形
成される。The wire rod (3) rolled through the second intermediate rolling 111 (la) and the finishing rolling II (2a) is pressed by the pinch rolls (4) and formed into a ring shape by the laying head (5).
（６）はキックオフローラーで、第二中間圧延機（１ａ
）と仕上圧延ＩＩ（２ａ）の間でループ制御を行ってい
る。（７）はそのループ状態を検出するループ検出器で
、３基配置されている。(6) is the kick-off roller, which is the second intermediate rolling mill (1a
) and finish rolling II (2a). (7) is a loop detector for detecting the loop state, and three units are arranged.
以下に本発明である線材のリング径を拡大する方法なら
びに運転方法について第１図および第２図を参照して説
明する。仕上圧延機（２ａ）を経た後の線材速度は、ピ
ンチロール（４）を閉にすることで保持される。またレ
イングヘッド（５）の回転数は、ピンチロール（４）と
同期していることから、一定のリング径が形成されてい
る。The method for enlarging the ring diameter of a wire rod and the operating method according to the present invention will be described below with reference to FIGS. 1 and 2. The wire rod speed after passing through the finishing mill (2a) is maintained by closing the pinch rolls (4). Further, since the rotation speed of the laying head (5) is synchronized with that of the pinch roll (4), a constant ring diameter is formed.
線材の圧延が完了に近づき、線材の尻部が仕上圧延機（
２ａ）を通過する時点になると、ピンチロール（４）は
開に切り換えられる。As the rolling of the wire rod nears completion, the tail of the wire rod is rolled into the finish rolling machine (
2a), the pinch roll (4) is switched open.
しかしながら、ピンチロール（４）が開になった状態に
なると線材はレイングヘンド（５）内の摩擦や捩じりな
どで線材速度は急激に減速し、リング径が縮小される。However, when the pinch roll (4) is in an open state, the speed of the wire rod is rapidly reduced due to friction and twisting within the reining hend (5), and the ring diameter is reduced.
したがって本発明では、第二中間圧延１１（ｌａ）と仕
上圧延ＩＩ（２ａ）の間に設けたキックオフローラ（６
）を戻し、線材が第二中間圧延機（１ａ）を通過した時
点で、仕上圧延機（２ａ）を昇速させると、仕上圧延機
（２ａ）とピンチロール（４）、レイングヘッド（５）
とは同期する。さらにピンチロール（４）が開になった
状態でもって、レイングヘッド（５）の回転数を減速す
れば、リング径は縮小することなく、拡大した一定のリ
ング径がレイングヘッド（５）から放出する。Therefore, in the present invention, the kick-off roller (6
), and when the wire passes through the second intermediate rolling mill (1a), the speed of the finishing mill (2a) is increased, and the finishing mill (2a), pinch rolls (4), and laying head (5)
Synchronize with. Furthermore, if the rotation speed of the laying head (5) is reduced with the pinch roll (4) open, the ring diameter will not be reduced and a constant, enlarged ring diameter will be released from the laying head (5). do.
第２図は仕上圧延機、レイングヘッドおよびピンチロー
ルの速度を各々制御する場合のパターンを示す図であっ
て、仕上圧延機（２ａ）の昇速は、線材が第一中間圧延
機を通過した時点で、１回目は設定回数に対して約１０
％の昇速を行い、第二中間圧延機を通過した時点では設
定回数に対して約１０％〜２０％の二段階昇速昇速制御
を行う。FIG. 2 is a diagram showing a pattern for controlling the speeds of the finishing mill, the laying head, and the pinch rolls, and the speed of the finishing mill (2a) is increased when the wire passes through the first intermediate rolling mill. At this point, the first time is about 10 times the set number of times.
%, and at the time of passing through the second intermediate rolling mill, a two-step speed increase control of about 10% to 20% is performed with respect to the set number of times.
尚、２段階の昇速制御する理由は、スタンド間距離とモ
ータのパワー不足によるものであり、スタンド間距離が
充分であれば、２段階にわたつて昇速制御する必要はな
い、また全てのミルモータのパワーが充分であれば、リ
ング径の縮小は発生しないのは勿論であるが、一般の熱
間連続仕上圧延機で、このような設計で造られた圧延ラ
インは現状見当たらないのが実態である。The reason for controlling the speed up in two stages is due to the distance between the stands and the insufficient power of the motor.If the distance between the stands is sufficient, there is no need to perform the speed up control in two stages. Of course, if the power of the mill motor is sufficient, there will be no reduction in the ring diameter, but the reality is that there are currently no general hot continuous finishing mills with a rolling line designed like this. It is.
また、図示のごとくピンチロール（４）が開になった際
のレイングヘッドの回転数の減速は、通常の回転数より
約１０〜２０χ減速する必要がある。Further, as shown in the figure, when the pinch roll (4) is opened, the rotational speed of the laying head needs to be reduced by about 10 to 20x compared to the normal rotational speed.
尚、本実施例においては線材が中間圧延機を通過した時
点で、仕上圧延機の速度を昇速し、つぎに線材が仕上圧
延機を通過した直後のレイングヘッドの回転数はピンチ
ロールの開時期に対応して減速制御してリング径を拡大
するようにしたが、他の実施例として、仕上圧延機の速
度を昇速後、線材が仕上圧延機を通過した直後に仕上圧
延機を減速させると、線材は仕上圧延機から勢いよく飛
出すこと鷲なって線材速度が増速し、リング径は拡大す
るので、この方策を講じてもよい。In this example, the speed of the finishing mill is increased when the wire passes through the intermediate rolling mill, and the rotation speed of the laying head immediately after the wire passes through the finishing mill is determined by the opening of the pinch rolls. The ring diameter was expanded by deceleration control according to the timing, but in another example, after increasing the speed of the finishing mill, the finishing mill was decelerated immediately after the wire passed through the finishing mill. If this is done, the wire rod will fly out of the finishing mill with great force, the speed of the wire rod will increase, and the ring diameter will expand, so this measure may be taken.
同じく他の実施例としては、線材が第一中間圧延機を通
過した時点から、第二中間圧延機および仕上圧延機を昇
速させても、同様にリング径は拡大方向につながる。Similarly, as another example, even if the speed of the second intermediate rolling mill and the finishing mill is increased from the time when the wire passes through the first intermediate rolling mill, the ring diameter continues to expand in the same manner.
（発明の効果）
以上の説明から、本発明の熱間圧延線材のリング径拡大
方法によれば、リング径が拡大することで、線材をリフ
ォーミングタプ内で線材コイルにした際でも、コイルの
荷姿も良くなり、又荷崩れも減少する。更に、従来のよ
うにリング径の縮小部の切り捨てが無くなったことで・
歩留りの向上と、生産能力の向上にもつながる。(Effects of the Invention) From the above explanation, according to the method for enlarging the ring diameter of a hot rolled wire rod of the present invention, the ring diameter is expanded, so that even when the wire rod is made into a wire rod coil in a reforming tap, the coil The appearance of the load also improves, and the possibility of the load collapsing is reduced. Furthermore, because there is no longer a need to cut off the reduced part of the ring diameter as in the past,
This also leads to improved yield and increased production capacity.
第１図は本発明の方法で線材を拡大する第二中間圧延機
からレイングヘッドまでの工程を示す概略図、第２図は
本発明方法で仕上圧延機、レイングヘッドおよびピンチ
ロールの速度を各々制御する場合のパターンを示す図、
第３図は一般的な熱間圧延線材の圧延設備を示す図、第
４図は線材をリング状に形成するレイングヘッド装置の
概略断面図である。
１−・−中間圧延段階、１ａ・−・・・第２中間圧延機
２−一一一仕上圧延段階、２ａ−−一・・仕上圧延機、
３−・−線材、４−・・・−ピンチロール、５−・・−
・レイングヘッド、６−・−キンクオフローラー、７・
・・−ル−プ検出器、８−・−加熱炉、９・・・・・−
粗圧延段階、１０・・・・水冷装ｙｔ、１１−−一一一
スチルモアコンベア、１２−−−−セイル、１３−−−
コイルプレート、１４−− リフォーミングタプ、Ｉ
５”−螺旋状パイプ、１６−−−−− レイングヘノド
駆動モータ、１７−・・−スピンドル、１８−・−・−
・減速機。
特許出願人 株式会社 神戸製鋼所
代 理 人 弁理士 余人 章−
第３図
第４図Fig. 1 is a schematic diagram showing the process from the second intermediate rolling mill to the laying head for expanding the wire rod according to the method of the present invention, and Fig. 2 is a schematic diagram showing the steps of the finishing mill, laying head, and pinch rolls using the method of the present invention. A diagram showing a pattern for controlling,
FIG. 3 is a diagram showing a general rolling equipment for hot-rolled wire rods, and FIG. 4 is a schematic cross-sectional view of a laying head device for forming wire rods into a ring shape. 1--Intermediate rolling stage, 1a--Second intermediate rolling mill 2-111 Finishing rolling stage, 2a--1...Finishing rolling mill,
3-...- wire rod, 4-...- pinch roll, 5-...-
・Laying head, 6-・-Kink off roller, 7・
...-Loop detector, 8--Heating furnace, 9...-
Rough rolling stage, 10... water cooling yt, 11--111 stillmore conveyor, 12-- sail, 13--
Coil plate, 14-- Reforming tap, I
5”-Spiral pipe, 16---- Laying head drive motor, 17-... spindle, 18------
·Decelerator. Patent Applicant Kobe Steel Co., Ltd. Representative Patent Attorney Yuto Akira - Figure 3 Figure 4
Claims (1)
線材のリング径を拡大する方法であって、中間圧延機列
による中間圧延段階を線材が通過した時点で、仕上圧延
機の速度を昇速させ、次いで前記線材が仕上圧延機を通
過した直後、又はピンチロールの開度時期に対応してレ
イングヘッドの回転数を減速させる用にしたことを特徴
とする熱間圧延線材のリング径拡大方法。A method of continuously forming a hot rolled wire rod into a ring shape and enlarging the ring diameter of the discharged wire rod, and when the wire rod passes through an intermediate rolling stage by a row of intermediate rolling mills, the speed of the finishing mill is A ring of a hot rolled wire rod, characterized in that the number of rotations of the laying head is reduced immediately after the wire rod passes through a finishing mill or in accordance with the opening timing of the pinch rolls. Diameter expansion method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12488989A JPH02303618A (en) | 1989-05-18 | 1989-05-18 | Method for magnifying ring diameter of hot rolled wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12488989A JPH02303618A (en) | 1989-05-18 | 1989-05-18 | Method for magnifying ring diameter of hot rolled wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02303618A true JPH02303618A (en) | 1990-12-17 |
Family
ID=14896607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12488989A Pending JPH02303618A (en) | 1989-05-18 | 1989-05-18 | Method for magnifying ring diameter of hot rolled wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02303618A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226287A (en) * | 2018-09-19 | 2019-01-18 | 陕西龙门钢铁有限责任公司 | A kind of low temperature steel rolling extends the operating method of spinning tube lifetime |
| WO2022124343A1 (en) * | 2020-12-09 | 2022-06-16 | Ｊｆｅスチール株式会社 | Method for producing wire |
-
1989
- 1989-05-18 JP JP12488989A patent/JPH02303618A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226287A (en) * | 2018-09-19 | 2019-01-18 | 陕西龙门钢铁有限责任公司 | A kind of low temperature steel rolling extends the operating method of spinning tube lifetime |
| WO2022124343A1 (en) * | 2020-12-09 | 2022-06-16 | Ｊｆｅスチール株式会社 | Method for producing wire |
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