JPH05177233A - Manufacturing device for hot rolled steel plate covered with fixed thickness scale - Google Patents
Manufacturing device for hot rolled steel plate covered with fixed thickness scaleInfo
- Publication number
- JPH05177233A JPH05177233A JP34696091A JP34696091A JPH05177233A JP H05177233 A JPH05177233 A JP H05177233A JP 34696091 A JP34696091 A JP 34696091A JP 34696091 A JP34696091 A JP 34696091A JP H05177233 A JPH05177233 A JP H05177233A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- stepped
- steel plate
- rolled steel
- cooling
- 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.)
- Withdrawn
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、一定厚スケール熱延鋼
板の製造装置、詳述すれば熱間圧延機の出側の冷却帯に
段付テーブルローラを設けることで一定速度で安定通板
させ、かつ鋼板上下に同一方式のスプレーノズルを設け
て均一冷却する一定厚スケールの熱延鋼板の製造装置で
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a constant-thickness scale hot-rolled steel sheet, and more specifically, by providing a stepped table roller in the cooling zone on the exit side of a hot rolling mill, stable strip passing at a constant speed. In addition, a spraying nozzle of the same system is provided above and below the steel sheet to uniformly cool the hot rolled steel sheet of a constant thickness scale.
【０００２】[0002]
【従来の技術】図７は、従来の熱延鋼板の製造装置の概
略図であり、図８は従来装置で用いられていたスプレー
ノズルの配置例を示す説明図である。2. Description of the Related Art FIG. 7 is a schematic view of a conventional hot-rolled steel sheet manufacturing apparatus, and FIG. 8 is an explanatory view showing an example of arrangement of spray nozzles used in the conventional apparatus.
【０００３】図７に示すように熱間圧延機70を出た鋼板
72は、計測器73で所定の計測を行った後、テーブルロー
ラ74上を走行しながら冷却帯76を通過する際に、上下水
冷ノズル78、79などの冷却手段でもって冷却され、次い
でピンチロール80を経て巻取機82によって巻取られる。
通常、熱間圧延機70の出側直後に設けられた計測器７３
によって計測された鋼板の温度に速度を加味して冷却強
さが決定される。しかし、冷却ノズルは図８にも示すよ
うに、上下別の形式のものが用いられているため、冷却
能は鋼板の表裏面では異なっている。Steel plate exiting hot rolling mill 70 as shown in FIG.
The 72 is cooled by cooling means such as upper and lower water cooling nozzles 78 and 79 when passing through the cooling zone 76 while traveling on the table roller 74 after performing a predetermined measurement with the measuring instrument 73, and then the pinch roll. It is wound by a winder 82 via 80.
Usually, a measuring device 73 provided immediately after the exit side of the hot rolling mill 70
The cooling strength is determined by adding the speed to the temperature of the steel sheet measured by. However, as shown in FIG. 8, since the cooling nozzles are of different types, the cooling ability is different between the front and back surfaces of the steel sheet.
【０００４】従来装置によれば、熱延鋼板はテーブルロ
ーラ上を走行するとき大気にさらされているので鋼板表
面に酸化スケールが発生する。特に、鋼板の先端部は通
板性を良くするために、通板速度および冷却を制限して
いるため、酸化スケールの生成は著しく、またバラツキ
も大きい。According to the conventional apparatus, since the hot-rolled steel sheet is exposed to the atmosphere when traveling on the table roller, oxide scale is generated on the surface of the steel sheet. In particular, since the leading end of the steel sheet limits the sheet passing speed and cooling in order to improve the sheet passing property, the production of oxide scale is remarkable and the variation is large.
【０００５】すなわち、鋼板の先端部はフリーなために
浮き上がったり、折れたりするので通板速度を遅くす
る。さらに上下面の冷却差を少なくするために冷却水を
絞り、また浮き上がりを防止するために下面の冷却水を
巻取りが開始するまで止める。このように通板速度が異
なったり、冷却水の大小等によりスケール厚さに幅方向
および長手方向にバラツキが生じる。That is, since the tip of the steel plate is free, it rises or breaks, thus slowing down the threading speed. Further, the cooling water is squeezed in order to reduce the cooling difference between the upper and lower surfaces, and the cooling water on the lower surface is stopped until the start of winding in order to prevent floating. In this way, the scale thickness varies in the width direction and in the longitudinal direction due to the difference in the plate passing speed and the size of the cooling water.
【０００６】このように従来の熱延鋼板の製造装置では
表面に10μm 前後の厚いスケールが発生するとともに、
上記のように長手方向、幅方向にスケール厚さが不均一
になる。As described above, in the conventional hot-rolled steel sheet manufacturing apparatus, a thick scale of about 10 μm is generated on the surface, and
As described above, the scale thickness becomes uneven in the longitudinal direction and the width direction.
【０００７】[0007]
【発明が解決しようとする課題】従来の装置にあって
は、特に鋼板先端部で長手方向および幅方向の冷却速度
が異なり、鋼板表面のスケール厚さが一定でない。その
ため後工程の酸洗におけるスケール除去においては酸洗
不足によるスケール残り、あるいは酸洗過多により母材
までをエッチングしてしまう等の問題がある。かくし
て、本発明の目的はかかる従来の問題点を解消し、長手
方向および幅方向に均一なスケール厚を有する熱延鋼板
の製造装置を提供することである。In the conventional apparatus, the cooling rates in the longitudinal direction and the width direction are different, especially at the tip of the steel sheet, and the scale thickness of the steel sheet surface is not constant. Therefore, in the scale removal in the subsequent step of pickling, there is a problem that the scale remains due to insufficient pickling, or the base material is etched due to excessive pickling. Thus, an object of the present invention is to solve the above conventional problems and to provide an apparatus for manufacturing a hot rolled steel sheet having a uniform scale thickness in the longitudinal direction and the width direction.
【０００８】[0008]
【課題を解決するための手段】本発明者らは、かかる問
題点を解決すべく種々研究開発を重ねてきた結果、次の
点を見い出し、本発明を完成させた。 (1) 一定厚さのスケール鋼板の製造には、鋼板先端部よ
り一定速度で通板することにより長手方向に均一冷却が
可能となること。 (2) 鋼板のバタツキなどがない安定通板が実現できれ
ば、均一冷却には有効であること。 (3) 熱間圧延機出側直後から鋼板の端面をはさみ込み可
能な一連の段付テーブルローラを設けることで、鋼板先
端部より一定速度の通板速度が確保でき、安定通板が実
現できること。Means for Solving the Problems As a result of various researches and developments for solving the above problems, the present inventors have found the following points and completed the present invention. (1) When manufacturing a scale steel plate with a constant thickness, it is possible to perform uniform cooling in the longitudinal direction by passing the steel plate from the tip of the steel plate at a constant speed. (2) It should be effective for uniform cooling if it is possible to realize a stable strip running without fluttering of the steel sheet. (3) By providing a series of stepped table rollers that can sandwich the end surface of the steel plate immediately after the hot rolling mill exit side, it is possible to secure a constant plate passing speed from the tip of the steel plate and to realize stable plate passing. ..
【０００９】ここに、本発明は、熱間圧延機の出側の冷
却帯に設けた複数の段付テーブルローラと、該段付テー
ブルローラを軸方向に移動する機構とを備え、各段付テ
ーブルローラの段付部は各ローラのそれぞれの一方の端
部に適宜振り分けて設け、段付テーブルローラの軸方向
の移動によって、両側に振り分けられた段付部の間の鋼
板幅方向の距離を調節して段付テーブルローラの段付部
の間に熱延鋼板の端面をはさみ込みながら鋼板を走行さ
せ、熱延鋼板の先端部を一定速度で安定通板させること
を特徴とする、一定厚スケールの熱延鋼板の製造装置で
ある。Here, the present invention comprises a plurality of stepped table rollers provided in the cooling zone on the exit side of the hot rolling mill, and a mechanism for moving the stepped table rollers in the axial direction. The stepped portion of the table roller is appropriately arranged at one end of each roller, and the distance in the steel plate width direction between the stepped portions distributed on both sides is set by the axial movement of the stepped table roller. Adjusting and running the steel sheet while sandwiching the end surface of the hot-rolled steel sheet between the stepped portions of the stepped table roller to stably pass the tip of the hot-rolled steel sheet at a constant speed. It is an apparatus for manufacturing a scale hot rolled steel sheet.
【００１０】本発明の好適態様によれば、熱延鋼板の上
下面のさらに一層均一な冷却を実現すべく、熱延鋼板の
上下面に対向する位置に同一形式のスプレーノズルを設
けることで均一冷却が可能となる。According to the preferred embodiment of the present invention, in order to realize more uniform cooling of the upper and lower surfaces of the hot-rolled steel sheet, uniform spray nozzles are provided at positions facing the upper and lower surfaces of the hot-rolled steel sheet. Cooling is possible.
【００１１】[0011]
【作用】次に、添付図面を参照して本発明を具体的に説
明する。図１は、本発明にかかる一定厚スケールの熱延
鋼板の製造装置の略式説明図であり、図中、熱間圧延機
10を出た熱延鋼板12は計測器14による計測を経てから、
冷却帯16において上面冷却用ノズル18および下面冷却用
ノズル19によってそれぞれ上下面を冷却されながら、熱
延鋼板12は、一連の段付テーブルローラ20に鋼板の両端
をはさみ込まれて走行してゆく。冷却帯16を出てから
は、従来装置と同様にしてピンチロール22を経て巻取機
24に巻取られる。The present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic explanatory view of an apparatus for producing a constant thickness hot-rolled steel sheet according to the present invention.
The hot-rolled steel plate 12 that came out of 10 was measured by the measuring device 14,
In the cooling zone 16, while the upper and lower surfaces are cooled by the upper surface cooling nozzle 18 and the lower surface cooling nozzle 19, respectively, the hot-rolled steel plate 12 travels with a series of stepped table rollers 20 sandwiching both ends of the steel plate. .. After exiting the cooling zone 16, the winding machine goes through the pinch roll 22 in the same manner as the conventional device.
It is wound up in 24.
【００１２】本発明においては一連の段付テーブルロー
ラ20から構成される冷却帯を除いては、従来の装置をそ
のまま利用することができ、換言すればそのような装置
については特段の制限はない。In the present invention, except for the cooling zone composed of a series of stepped table rollers 20, the conventional apparatus can be used as it is. In other words, there is no particular limitation on such an apparatus. ..
【００１３】一定厚スケールの熱延鋼板を製造するに
は、圧延機出側の速度を鋼板先端部から後端部に至るま
で一定にする必要がある。また、その場合でも表面疵の
生成防止を図らなければならない。本発明にあっては、
そのような作用を発揮する装置として一連の段付テーブ
ルローラ20から構成される冷却帯を用いるものである。In order to manufacture a hot-rolled steel sheet having a constant thickness scale, it is necessary to keep the speed on the delivery side of the rolling mill constant from the leading end to the trailing end of the steel sheet. Even in that case, it is necessary to prevent the generation of surface defects. In the present invention,
A cooling zone composed of a series of stepped table rollers 20 is used as a device that exerts such an action.
【００１４】図２は本発明において用いる複数の段付テ
ーブルローラの配置図の一部、図３は段付テーブルロー
ラの詳細図、図４は段付テーブルローラの段付部詳細
図、図５は均一冷却するための冷却スプレーノズルの配
置図である。FIG. 2 is a partial layout view of a plurality of stepped table rollers used in the present invention, FIG. 3 is a detailed view of the stepped table roller, FIG. 4 is a detailed view of a stepped portion of the stepped table roller, and FIG. FIG. 4 is a layout view of cooling spray nozzles for uniform cooling.
【００１５】図２は一連の段付テーブルローラ20の配置
図であり、段付部26はテーブルローラの片側のみに設け
てあり、それぞれの一方の端部に適宜振り分けて設け
る。ここに「適宜振り分け」るとは、鋼板端部を挟み込
んで安定走行させるに十分なように全体的に両側に、望
ましくは均等となるように振り分けることである。特
に、図示例では交互に段付部26の向きを変えて配置して
いる。配置された段付テーブルローラ20は鋼板の幅に応
じて軸方向に移動できる機構を備えており、図示例では
油圧シンダー30とチョック32、40と反対側に設けたスプ
ラインシャフト38から構成されるロール移動機構であ
る。FIG. 2 is a layout view of a series of stepped table rollers 20. The stepped portion 26 is provided only on one side of the table roller, and is appropriately distributed to one end of each. Here, "appropriately distributing" means distributing to both sides as a whole, preferably evenly, so as to sandwich the end portions of the steel sheet and perform stable traveling. In particular, in the illustrated example, the stepped portions 26 are arranged so that their directions are alternately changed. The arranged stepped table roller 20 is provided with a mechanism that can move in the axial direction according to the width of the steel plate, and in the illustrated example, it is composed of the hydraulic cinder 30 and the spline shaft 38 provided on the opposite side of the chocks 32, 40. It is a roll moving mechanism.
【００１６】なお、各段付テーブルローラ20には油圧シ
リンダー30の反対側に電動機34と継手36とから構成され
る駆動機構をも備えている。ロール移動機構の作用によ
ってテーブルローラ20の各段付部26の間の距離は常に調
節可能であり、各テーブルローラを油圧リンダー30の作
用でそれぞれ軸方向に移動させて、挟み込む鋼板の幅方
向寸法に合わせて段付部26の間の距離を調節して鋼板の
端面を段付部ではさみ込みながら圧延機から出た鋼板を
一定速度でバタツキもなく安定した通板を可能としてい
る。Each stepped table roller 20 is also provided with a drive mechanism composed of an electric motor 34 and a joint 36 on the opposite side of the hydraulic cylinder 30. The distance between the stepped portions 26 of the table roller 20 can always be adjusted by the action of the roll moving mechanism, and each table roller is moved in the axial direction by the action of the hydraulic linder 30 to measure the widthwise dimension of the sandwiched steel plate. According to the above, the distance between the stepped portions 26 is adjusted to sandwich the end surface of the steel sheet at the stepped portion, and the steel sheet discharged from the rolling mill can be stably passed at a constant speed without fluttering.
【００１７】この段付部26におけるはさみ込み機構は、
図３に詳細に示すように、鋼板の幅寸法に応じて油圧シ
リンダー30で段付テーブルローラ20を軸方向に移動さ
せ、鋼板の端面に所定の圧力で段付部26に接触させる。
この圧力は板厚、板幅、温度に応じて設定されるもので
ある。軸方向の移動はチョック32と一緒に段付テーブル
ローラ20がチョック40のスライド面42を摺動しながら行
う。また、軸の伸縮はスプラインシャフト38で行ってい
る。The pinching mechanism in the stepped portion 26 is
As shown in detail in FIG. 3, the step table roller 20 is axially moved by the hydraulic cylinder 30 in accordance with the width dimension of the steel plate, and the end surface of the steel plate is brought into contact with the step portion 26 with a predetermined pressure.
This pressure is set according to the plate thickness, the plate width, and the temperature. The axial movement is performed while the step table roller 20 slides on the slide surface 42 of the chock 40 together with the chock 32. Further, the expansion and contraction of the shaft is performed by the spline shaft 38.
【００１８】図４は段付部26に鋼板12の端面が接触した
状態を示す。図４a は正面図、同bは側面図である。鋼
板端面が接触した摺動板44は回転しながらすべりを受け
損傷し易い。このために、摺動板44は分割タイプとして
取替え容易にしている。さらにこの摺動板44には損傷に
耐えられる高硬質の耐熱合金等を用いることができる。FIG. 4 shows a state where the end face of the steel plate 12 is in contact with the stepped portion 26. 4a is a front view and FIG. 4b is a side view. The sliding plate 44 in contact with the end faces of the steel plate is likely to be slipped and damaged while rotating. For this reason, the sliding plate 44 is of a split type to facilitate replacement. Further, the sliding plate 44 can be made of a highly hard heat-resistant alloy or the like that can withstand damage.
【００１９】段付部26の配置は、各テーブルローラ20の
片方の側に設け、それの両側への振分は適宜行うが、図
示例のように千鳥状に、つまり両隣の段付部が反対側に
くるように配置するのが好ましい。鋼板端面の挟み込み
は鋼板先端部において巻取機の巻取りが開始するまでは
必要であるが、安定走行を確実に実現するには操業中ず
っと続けることが好ましい。The stepped portion 26 is arranged on one side of each table roller 20 and is distributed to both sides of the table roller 20 as appropriate. It is preferable to arrange them so that they are on the opposite side. The sandwiching of the steel plate end surface is necessary until the winding of the winder at the steel plate front end is started, but it is preferable to continue it during the operation to ensure stable running.
【００２０】図５は本発明に用いる冷却装置の配置説明
図で、前述の図８に示す従来の冷却装置とは異なる。冷
却装置50は鋼板の表裏面に向かった配置した一連の水冷
ノズル18、19から構成され、本発明の好適態様では鋼板
の表裏面の冷却用ノズルの配置、構成が同じとなってい
る。図５a は側面図を、図５b は正面図をぞれぞれ示
す。FIG. 5 is an explanatory view of the layout of the cooling device used in the present invention, which is different from the conventional cooling device shown in FIG. The cooling device 50 is composed of a series of water-cooling nozzles 18 and 19 arranged toward the front and back surfaces of the steel plate, and in a preferred embodiment of the present invention, the arrangement and structure of the cooling nozzles on the front and back surfaces of the steel plate are the same. 5a shows a side view and FIG. 5b shows a front view.
【００２１】従来法では、通板中、特に鋼板の先端部は
フリーな状態のために速度による風圧や上下面の冷却差
などにより持ち上がって通板するのが一般的である。こ
のために巻取機で巻始めるまでは速度を落として通板し
ている。このことにより長手方向はスケール厚が一定で
ない。In the conventional method, it is general that the leading end of the steel plate is lifted by the wind pressure due to the speed, the cooling difference between the upper and lower surfaces, and the like so that the free end of the steel plate is passed. For this reason, the plate is passed at a slow speed until it is wound by the winder. As a result, the scale thickness is not constant in the longitudinal direction.
【００２２】また鋼板の先端部が持ち上がって通板する
ので鋼板と冷却帯との干渉を避けるために、冷却ノズル
は1.5 〜2.0 ｍの高い所に設けている。このことによ
り、鋼板の幅方向に冷却ムラが生じスケール厚が一定で
ない。Further, since the tip of the steel plate is lifted up and passed through, the cooling nozzle is provided at a high position of 1.5 to 2.0 m in order to avoid interference between the steel plate and the cooling zone. This causes uneven cooling in the width direction of the steel sheet, and the scale thickness is not constant.
【００２３】このように従来の通板装置や冷却装置では
鋼板のスケール厚さが長手方向および幅方向に一定でな
い。しかし、本発明によれば、段付テーブルローラで鋼
板の端面を拘束しているためにバタツキがなく、鋼板の
近くからスプレー冷却することができる。さらに、好ま
しくは上と下の冷却装置が同一形式であるため、噴射圧
力も上・下面均一で冷却差がなくなり均一なスケール厚
さとなり、従来装置に比べ設備が簡単である。なお、水
冷ノズル18、19の具体的構成は特に制限なく、慣用のも
のを用いればよいが、本発明によれば走行する鋼板に可
及的近接位置に設けることができる。As described above, in the conventional strip passing apparatus and cooling apparatus, the scale thickness of the steel sheet is not constant in the longitudinal direction and the width direction. However, according to the present invention, since the end surface of the steel plate is restrained by the stepped table roller, there is no fluttering, and the spray cooling can be performed from near the steel plate. Furthermore, since the upper and lower cooling devices are preferably of the same type, the spray pressure is uniform on the upper and lower surfaces, there is no cooling difference, and the scale thickness is uniform, so that the equipment is simpler than the conventional device. The water-cooling nozzles 18 and 19 are not particularly limited in specific configuration, and a conventional one may be used, but according to the present invention, the water-cooling nozzles 18 and 19 can be provided at positions as close to the traveling steel plate as possible.
【００２４】かくして、本発明の段付テーブルローラで
は、一定速度の通板が可能となり先端・後端部を含めた
通板性が従来装置に比べてよくなる。さらに、均一冷却
が可能で全長にわたってスケールが一定厚の熱延鋼板の
製造が可能となる。Thus, in the stepped table roller of the present invention, the plate passing at a constant speed is possible, and the plate passing property including the front end and the rear end is improved as compared with the conventional device. Furthermore, it is possible to produce a hot-rolled steel sheet which can be uniformly cooled and has a constant scale over the entire length.
【００２５】以上説明してきたように、熱間圧延機出側
の冷却帯に設けた一連の段付テーブルローラによって鋼
板端面を拘束しながら通板する限りにおいて、多くの変
更例が考えられるが、それらはいずれも本発明の範囲内
であると理解されよう。次に、実施例によって本発明の
作用効果をさらに具体的に説明する。As described above, many modifications are conceivable as long as the steel plate end face is constrained by the series of stepped table rollers provided in the cooling zone on the delivery side of the hot rolling mill, It will be understood that they are all within the scope of the present invention. Next, the working effects of the present invention will be described more specifically by way of examples.
【００２６】[0026]
【実施例】実施例１ 慣用の熱間圧延機によって出側厚2.5 mm×幅1200mm、出
側温度900 ℃で仕上げ、これを650 ℃で巻取った。次い
で、本発明例として、図１の装置を使用して、先端部か
ら後端部までを1000m/min の一定速度で通板させて巻取
った。スプレー装置は図５に示すものを採用した。この
ときのスプレー水量は上・下面共、それぞれ合計量が10
0m3/min であった。EXAMPLE Example 1 A conventional hot rolling mill was used to finish at a delivery side thickness of 2.5 mm × width of 1200 mm and a delivery side temperature of 900 ° C., and this was wound at 650 ° C. Then, as an example of the present invention, the apparatus of FIG. 1 was used to pass the film from the front end to the rear end at a constant speed of 1000 m / min for winding. The spray device used was that shown in FIG. The total amount of spray water at this time is 10 for both the upper and lower surfaces.
It was 0 m 3 / min.
【００２７】比較例１ 一方、比較用として、図７の水スプレーを用いる装置を
使用して、同様の操業を行った。先端部が巻取機に巻き
取り始めるまでは600m/minの速度で、水量は上側50m3/m
in、下側０m3/minにし、その後巻取り終るまで速度600
から1000m/minに上げ、さらに水量を上側140m3/min 、
下側100m3/min にして巻取った。 Comparative Example 1 On the other hand, for comparison, the same operation was performed using the apparatus using a water spray of FIG. The speed is 600 m / min until the tip starts to wind on the winder, and the water volume is 50 m 3 / m on the upper side.
in, lower side 0 m 3 / min, speed 600 until the end of winding
From 1000 m / min to 140 m 3 / min on the upper side,
The lower side was wound up to 100 m 3 / min.
【００２８】実施例２ 巻取温度を550 ℃とし、スプレー水量を上・下面共、そ
れぞれ合計量が130m3/min とした点を除いて、実施例１
を繰り返した。 Example 2 Example 1 was repeated except that the winding temperature was 550 ° C. and the total amount of spray water was 130 m 3 / min for both the upper and lower surfaces.
Was repeated.
【００２９】比較例２ 巻取温度を550 ℃とし、巻取速度を600 から1000m/min
に上げた時点で水量を上側190m3/min 、下側130m3/min
として巻取った点を除いて、比較例１を繰り返した。実
施例１および２ならびに比較例１および２によってそれ
ぞれ得られた熱延鋼板についてスケール厚さ、疵発生の
有無を評価した。その結果を表１にまとめて示す。 Comparative Example 2 The winding temperature was 550 ° C., and the winding speed was 600 to 1000 m / min.
The upper amount of water at the time was raised to 190 m 3 / min, lower side 130m 3 / min
Comparative Example 1 was repeated except that the film was wound as. With respect to the hot-rolled steel sheets obtained in Examples 1 and 2 and Comparative Examples 1 and 2, the scale thickness and the presence / absence of defects were evaluated. The results are summarized in Table 1.
【００３０】本発明にかかる装置を用いた場合、スケー
ル厚さは、先端部、中央部、後端部のぞれぞれについて
幅方向のセンター、エッジ部において9 〜10μm あるい
は7〜8 μm と薄く、実質上同一であったのに対し、比
較例ではかなりのバラツキが見られた。またスリップ
疵、幅縮みも見られた。When the apparatus according to the present invention is used, the scale thickness is 9 to 10 μm or 7 to 8 μm at the center and the edge in the width direction for each of the front end portion, the central portion and the rear end portion. Although it was thin and substantially the same, considerable variations were observed in the comparative examples. In addition, slip defects and shrinkage of width were also observed.
【００３１】また、図６は、このときの鋼板の通板速度
を示すが、本発明によれば、先端部の通板時からかなり
高速の一定の通板速度を確保でき、これが後端部の通過
時まで保持されることから、作業能率の向上は著しいこ
とが分かる。FIG. 6 shows the strip running speed of the steel plate at this time. According to the present invention, a considerably high strip running speed can be ensured even after the leading end is threaded, which is the rear end portion. It can be seen that the work efficiency is remarkably improved because it is maintained until the time of passage.
【００３２】[0032]
【表１】 [Table 1]
【００３３】[0033]
【発明の効果】本発明によれば、均一な性質をもった一
定厚スケールの熱延鋼板が高速で製造でき、さらに段付
テーブルローラにより先端・後端部の鋼板疵がなくなり
実用上の効果が大きい。EFFECTS OF THE INVENTION According to the present invention, a constant-thickness hot-rolled steel sheet having uniform properties can be produced at high speed, and further, the stepped table roller eliminates the steel sheet flaws at the front and rear ends, and has practical effects. Is big.
【図１】本発明にかかる一定厚スケールの熱延鋼板の製
造装置の略式説明図である。FIG. 1 is a schematic explanatory view of an apparatus for producing a constant thickness hot-rolled steel sheet according to the present invention.
【図２】本発明において用いる段付テーブルローラの配
置図である。FIG. 2 is a layout view of a stepped table roller used in the present invention.
【図３】本発明において用いる段付テーブルローラの移
動機構の詳細図である。FIG. 3 is a detailed view of a moving mechanism of a stepped table roller used in the present invention.
【図４】本発明において用いる段付テーブルローラの段
付部の詳細図であり、図４ａは部分正面図、図４ｂは側
面図である。FIG. 4 is a detailed view of a stepped portion of a stepped table roller used in the present invention, FIG. 4a is a partial front view, and FIG. 4b is a side view.
【図５】本発明において用いる均一冷却のための冷却ス
プレーノズルの配置図であり、図５ａは側面図、図５ｂ
は正面図である。FIG. 5 is a layout view of a cooling spray nozzle for uniform cooling used in the present invention, FIG. 5a is a side view, and FIG.
Is a front view.
【図６】実施例の結果を比較例のそれとともに示すグラ
フである。FIG. 6 is a graph showing the results of Examples together with those of Comparative Examples.
【図７】従来の熱延鋼板の製造装置の略式説明図であ
る。FIG. 7 is a schematic explanatory view of a conventional hot-rolled steel sheet manufacturing apparatus.
【図８】従来の冷却スプレーノズルの配置図である。FIG. 8 is a layout view of a conventional cooling spray nozzle.
10: 熱間圧延機 12: 熱延鋼板 14: 計測器 16: 冷却帯 18: 冷却用上ノズル 19: 冷却用下ノズル 20: 段付テーブルローラ 22: ピンチロール 24: 巻取機 10: Hot rolling mill 12: Hot rolled steel sheet 14: Measuring instrument 16: Cooling zone 18: Cooling upper nozzle 19: Cooling lower nozzle 20: Stepped table roller 22: Pinch roll 24: Winding machine
Claims (2)
の段付テーブルローラと、該段付テーブルローラを軸方
向に移動する機構とを備え、各段付テーブルローラの段
付部は各ローラのそれぞれの一方の端部に適宜振り分け
て設け、段付テーブルローラの軸方向の移動によって、
両側に振り分けられた段付部の間の鋼板幅方向の距離を
調節して段付テーブルローラの段付部の間に熱延鋼板の
端面をはさみ込みながら鋼板を走行させ、熱延鋼板の先
端部を一定速度で安定通板させることを特徴とする、一
定厚スケールの熱延鋼板の製造装置。1. A stepped table roller provided with a plurality of stepped table rollers provided in a cooling zone on the outlet side of a hot rolling mill, and a mechanism for axially moving the stepped table rollers. The parts are appropriately distributed to one end of each roller, and by the axial movement of the stepped table roller,
Adjust the distance between the stepped portions distributed on both sides in the width direction of the steel sheet and run the steel sheet while sandwiching the end surface of the hot rolled steel sheet between the stepped portions of the stepped table roller, and the tip of the hot rolled steel sheet. An apparatus for producing a hot-rolled steel sheet having a constant thickness scale, which is characterized by stably passing a portion at a constant speed.
面を冷却する同一形式のスプレーノズルを設け、鋼板両
面の均一冷却を可能とすることを特徴とする、請求項１
記載の一定厚スケールの熱延鋼板の製造装置。2. The cooling zone is further provided with a spray nozzle of the same type for cooling the upper and lower surfaces of the hot-rolled steel sheet to enable uniform cooling of both sides of the steel sheet.
An apparatus for producing a hot-rolled steel sheet having a constant thickness scale as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34696091A JPH05177233A (en) | 1991-12-27 | 1991-12-27 | Manufacturing device for hot rolled steel plate covered with fixed thickness scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34696091A JPH05177233A (en) | 1991-12-27 | 1991-12-27 | Manufacturing device for hot rolled steel plate covered with fixed thickness scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05177233A true JPH05177233A (en) | 1993-07-20 |
Family
ID=18386990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34696091A Withdrawn JPH05177233A (en) | 1991-12-27 | 1991-12-27 | Manufacturing device for hot rolled steel plate covered with fixed thickness scale |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05177233A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100899702B1 (en) * | 2002-11-02 | 2009-05-28 | 주식회사 포스코 | Device of roll having cylinder within and shifting by axis |
| CN106825071A (en) * | 2017-02-10 | 2017-06-13 | 余姚市永建精管机械制造厂 | A kind of steel pipe continuous conveying mechanism |
-
1991
- 1991-12-27 JP JP34696091A patent/JPH05177233A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100899702B1 (en) * | 2002-11-02 | 2009-05-28 | 주식회사 포스코 | Device of roll having cylinder within and shifting by axis |
| CN106825071A (en) * | 2017-02-10 | 2017-06-13 | 余姚市永建精管机械制造厂 | A kind of steel pipe continuous conveying mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990311 |