JP4281031B2 - Loop forming equipment and loop forming method for sheet thickness reduction press - Google Patents

Loop forming equipment and loop forming method for sheet thickness reduction press Download PDF

Info

Publication number
JP4281031B2
JP4281031B2 JP15460499A JP15460499A JP4281031B2 JP 4281031 B2 JP4281031 B2 JP 4281031B2 JP 15460499 A JP15460499 A JP 15460499A JP 15460499 A JP15460499 A JP 15460499A JP 4281031 B2 JP4281031 B2 JP 4281031B2
Authority
JP
Japan
Prior art keywords
loop
plate thickness
slab
roll
group
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.)
Expired - Fee Related
Application number
JP15460499A
Other languages
Japanese (ja)
Other versions
JP2000343192A (en
Inventor
昌夫 三上
孝行 岩崎
崇 西井
賢一 井出
史郎 長田
早登史 村田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP15460499A priority Critical patent/JP4281031B2/en
Publication of JP2000343192A publication Critical patent/JP2000343192A/en
Application granted granted Critical
Publication of JP4281031B2 publication Critical patent/JP4281031B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Continuous Casting (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、連続鋳造装置から製造されるスラブを、板厚圧下スレスで板厚圧下する際に仕上圧延機群との成形速度差を同調させる板厚圧下プレス用のループ形成設備及びループ形成方法に関する。
【0002】
【従来の技術】
近年、連続鋳造装置で鋳造したスラブの上流側での板厚圧下を、粗圧延機群によらず板厚圧下プレスで行なうものが創案され出願されている(例えば、特開昭61−235002号)。なお、本出願において、板厚スラブとはプレス成形後のスラブをいう。
【0003】
このスラブ成形装置1は、図3に模式図に示すように、図示しない連続鋳造装置で製造されたスラブ2を、上下一対で夫々圧延ラインPに向かって傾斜部とこれに連続する平行部を有してスラブ2を所定の板厚に高圧下する金型3を保持したプレス4と、プレス4の板厚圧下で生じたスラブ幅端部の形状不良を矯正する溝付ロール5を有するエッジャー6と、更にその下流に上下一対の作業ロール7を有する水平圧延機8と、から構成されている。これにより、プレスでスラブを高圧下できるので圧延に比べ大きな圧下量が得られ、プレス1台で粗圧延機を5〜6台分を削減できるので、設備コストの低減と圧延ラインの短縮化が図れる。
【0004】
【発明が解決しようとする課題】
板厚圧下プレスで板厚成形され搬送される板厚スラブの通板パスラインへの成形速度は、本質的に変動がある。一方仕上圧延機群の入側速度は定常圧延では一定速度であり、加減速時も円滑に増速や減速して圧延速度が周期的に上下することがない。この板厚圧下プレスの板厚成形速度と仕上圧延機群の圧延速度を同調させるには、ループ装置が必要である。しかし、図3に示すようにこのループ装置が配置されていないため、これらの速度差の調整が難しく生産性の低下と、また搬送速度を早くできないためスラブの温度降下を防止できず、高品質の圧延材を得ることができないという問題点がある。
【0005】
これに対して、本願出願人は特願平10−166545号「熱間圧延方法及び設備」(出願日:平成10年6月15日)で、上記プレスと圧延機間にループ装置を配置した圧延ラインを出願している。
【0006】
この熱間圧延設備10は、図4の模式図に示すように、連続鋳造機11で鋳造されたスラブ12を、スラブ保加熱炉13で保加熱し、幅圧下プレス14で所定量に幅圧下し、更に板厚圧下プレス15で所定量に板厚圧下し、ルーパ装置16で必要量にわたり滞留させ、縦型圧延機17で幅規制し、仕上圧延機群18で最終製品の板厚の圧延材19を圧延成形し、ピンチロール20を介して巻取機21でコイル状に巻取るように圧延ラインPを構成している。このように圧延ライン中にルーパ装置を配置して、前述した原因で生じる板厚圧下プレスと仕上圧延機群間の成形及び搬送速度差を板厚スラブにループ形状を形成し、かつ必要量を滞留させて調整できるので、これらの速度差を容易に解消して連続的に高速で圧延材を製造することができる。
【0007】
しかし、図4に示すルーパ装置は、ループ形状を搬送する板厚スラブの自重で作らせる方式としているため、ループを形成するには相当長い通板パスラインが必要とされ例えば、仕様上の最大板厚のスラブを弾性変形内でループ形状を形成するには10数M以上の長さが必要とし、このために圧延ラインが延長されるという問題点があった。更に、図4の場合は、板厚圧下プレスから板厚スラブが、このルーパ装置の相当長い距離間にわたり、何等保熱の対策が施されずに放熱状態で自重によりループを形成し搬送されるために、かなりの温度降下した状態で仕上圧延機群に搬入されることになる。この温度降下の影響により最終製品厚さの圧延成形に必要な仕上圧延機群の入口温度が確保できないので、高品質の圧延材が製造できなくなるという問題点があった。
【0008】
本発明は、かかる問題点を解決するために創案されたものである。すなわち、本発明の目的は、板厚の厚い板厚スラブでもループ形状を迅速かつ容易に形成させ、プレス成形と圧延成形による成形速度差と搬送速度差を同調させて解消でき、板厚スラブの温度降下も防止することができる板厚圧下プレス用のループ形成設備及びループ形成方法を提供することにある。
【0009】
【課題を解決するための手段】
本発明によれば、連続鋳造されたスラブ(31)を上下一対の金型を用いて所定の板厚スラブに成形する板厚圧下プレス(33)と、該板厚圧下プレスの下流側に配置され搬送される板厚スラブを連続圧延し製品厚さの圧延材とする仕上圧延機群(34)との間に配置され、この間に搬送される板厚スラブにループ形状を形成させる昇降自在なループ形成装置(35)と、仕上圧延機群の上流側に配置される回転自在な上下ロールを有するピンチロール(38)と、を備え
前記ループ形成装置(35)は、搬送ローラ群が設置されたループテーブル(42)と、昇降自在な該ループテーブルに取付けられ板厚スラブの上面を接触してガイドし所定のループ形状を形成させるガイドロール(44)と、を備え、
前記搬送ローラ群と前記ガイドロールとの上下間を板厚スラブが通過するようになっており、
前記ガイドロールは前記ループテーブル(42)に一体的に取付けられることで、前記ガイドロールと前記搬送ローラ群とが一体的に昇降されるようになっていることを特徴とする板厚圧下プレス用のループ形成設備が提供される。
本発明の好ましい実施形態によれば、前記ループ形成装置(35)は、前記ループテーブルを昇降自在に支持する油圧シリンダ(45)をさらに備え、前記搬送ローラ群は、上部が通板パスラインを形成し、前記ガイドロールは、前記ループテーブル(42)の中央部近傍に取付けられている。
【0010】
本発明の構成によれば、板厚圧下プレスと仕上圧延機群との間に昇降自在なループ形成装置を配置したので、板厚圧下プレスでの板厚成形時の変動する成形速度と、仕上圧延機群での圧延成形時の定常で不変の成形速度による両成形速度差並びに搬送時の速度差を同調させて容易に解消して、良質の圧延材を製造することができる。また、プレスによる板厚成形後の厚い板厚スラブ(例えば約90mm)にループ形状を迅速に形成させることができるので、ループ形成長さを短くして圧延ラインを短縮化でき、設備コストを低減できる。
【0011】
また、通常の通板パスラインとして使用する場合は、板厚圧下プレスからの板厚スラブを搬送ローラ群に載置させて下流側に容易に搬送させることができる。一方、ループ形状を形成させる場合には、油圧シリンダで支持されて昇降自在なループテーブルの中央部近傍で、かつ搬送ローラ群の上部に取付けられたガイドロールにより、通板パスラインに載置された板厚スラブの上面を押圧して下降させて、必要量のループ形状を迅速かつ容易に形成させることができる。
【0012】
更に、本発明の好ましい実施形態によれば、板厚圧下プレスとループ形成装置との間に板厚スラブのループ形状の形成を開始させるループ開始ロール群(50)を有する。
この構成により、板厚圧下プレスの下流側でかつ昇降自在なループ形成装置との間に複数(本図では3本)の回転自在なロールを板厚スラブを挟んで配置したので、通板パスラインから下方に向かって板厚スラブをガイドさせてループ形状の形成を容易に開始することができる。これにより、板厚圧下プレスで板厚圧下されて所定の板厚(例えば約90mm)の板厚スラブを、下流側のループ形成装置によるループ形状の形成に先立って曲げ始めることができるので、ループ形成装置でのループ形状の形成を効率的に容易にできる。更に、3番目のロールを昇降自在に配置すれば、ループ形状の開始時にこのロールを板厚スラブの上面に押当てて下降を行うので、ループ形状の形成をより容易にできる。
【0013】
更に、本発明の好ましい実施形態によれば、ループ形成装置とピンチロールとの間に板厚スラブのループ形状を矯正する矯正ロール群(55)を有する。
この構成により、昇降自在なループ形成装置と仕上圧延機群の上流側のピンチロールとの間に複数の回転自在なロールを板厚スラブを挟んで配置したので、ループ形成装置で形成された板厚スラブの曲り癖を容易に矯正させて通板パスラインに戻せる。従って、曲り癖のないストレート形状の板厚スラブをピンチロールを介して仕上圧延機群に円滑に、かつ迅速に搬送できる。
【0014】
更に、本発明の好ましい実施形態によれば、ループ形成装置を挟んでループ開始ロール群(50)と矯正ロール群(55)を配置する。
この構成により、中央部近傍に板厚スラブの上面に接触して容易に所定のループ形状を形成するガイドロールを取付けた昇降自在のループテーブルからなるループ形成装置を挟んでループ開始ロール群と矯正ロール群を配置させた。ループ形成装置の入側装置となるループ開始ロール群を配置させたので、ループ形成装置によるループ形状の形成に先立って曲げ始めることができるので、ループ形成装置でのループ形状の形成が効率的に容易にできる。一方、ループ形成装置の出側装置となる矯正ロール群を配置させたので、ループ形成装置で形成された板厚スラブの曲り癖を容易に矯正させて通板パスラインに戻すことができる。このように、3つの装置を通板パスライン上に配列させたので、板厚圧下プレスから板厚圧下された板厚スラブに所定のループ形状を迅速かつ容易に形成させることができる。更に、所定のループ形状を確保させながら仕上圧延機群に迅速に搬送できるので、板厚スラブの圧延ラインでの成形及び搬送中での温度下降を減少させて、良好な圧延材を得ることができる。
【0015】
また、本発明によれば、連続鋳造されたスラブを所定の板厚スラブに成形する板厚圧下プレス(32)と、板厚スラブを連続圧延し製品厚さの圧延材とする仕上圧延機群(34)との間で順次板厚スラブのループ形状の形成を開始するループ開始ロール群(50)と、搬送ローラ群が設置されたループテーブル(42)と昇降自在な該ループテーブルに取付けられ板厚スラブの上面を接触してガイドし所定のループ形状を形成するガイドロールを有する昇降自在なループ形成装置(35)と、板厚スラブのループ形状を矯正する矯正ロール群(55)と、板厚スラブを仕上圧延機群に搬入するピンチロール(38)と、を備え、前記搬送ローラ群と前記ガイドロールとの上下間を板厚スラブが通過するようになっており、前記ガイドロールは前記ループテーブル(42)に一体的に取付けられることで、前記ガイドロールと前記ループテーブル(42)とが一体的に昇降されるようになっており、
(A)板厚圧下プレスの上下金型で所定の板厚に成形された板厚スラブの先端部を、下流側で通常の通板パスライン位置に配置されたループ開始ロール群(50)とループ形成装置(35)と矯正ロール群(55)とで順次ピンチロール(38)まで搬送し、ピンチロールの上下ロールに挟み込んだ状態でスラブ先端を停止させ、
(B)次にループ開始ロール群(50)も作動させ板厚スラブをガイドして下降させてループ形状の形成を開始させ、同時にループ開始ロール群と連動させ前記ループテーブル(42)の前記ガイドロールで板厚スラブの上面と接触してガイドさせながら通板パスラインから下降させ、これらを同調させながら板厚スラブに所定量のループ形状を形成させ、
(C)次に所定量のループ形状の形成を確認した後に矯正ロール群(55)の作動を開始してループ形状の板厚スラブを順次矯正して通板パスラインに戻し、更に所定量のループ形状を確保しつつピンチロールと仕上圧延機群の作動を作動させ、これにより板厚圧下プレスの板厚成形と仕上圧延機群の圧延成形との成形速度差と更にこの間の夫々の装置間の搬送速度差とを同調可能とする、ことを特徴とする板厚圧下プレス用のループ形成方法が提供される。
【0016】
上述の本発明の方法によれば、板厚圧下プレスで所定の板厚に高圧下された板厚スラブの先端部を、通常の通板パスラインXの位置に配置されたループ形成装置を介して仕上圧延機群の入側に配置したピンチロールまで搬送できる。更に、板厚スラブの先端部をピンチロールで挟み込んだ状態でループ形状を形成するガイドロールを取付けた昇降自在のループテーブルからなるループ形成装置を挟んでループ開始ロール群と矯正ロール群を作動させて、板厚スラブに所定量のループ形状の形成を、迅速かつ容易に形成させることができる。更に温度降下を防止させつつ、板厚圧下プレスでの板厚成形時の変動する成形速度と、仕上圧延機群での圧延成形時の定常で不変の成形速度による両成形速度差並びに搬送時の速度差を同調させて容易に解消して、良質の圧延材を製造することができる。
【0017】
更に、別の本発明によれば、連続鋳造されたスラブを所定の板厚スラブに成形する板厚圧下プレス(33)と、板厚スラブを連続圧延し製品厚さの圧延材とする仕上圧延機群(34)との間で順次板厚スラブのループ形状の形成を開始するループ開始ロール群(50)と、一体的に取付けたピンチロール(61)の上下ロール間で板厚スラブに所定量のループ形状を形成させるループテーブル(64)を有する昇降自在なループ形成装置(65)と、板厚スラブのループ形状を矯正する矯正ロール群(55)と、板厚スラブを仕上圧延機群に搬入するピンチロール(38)と、を備えたことを特徴とする板厚圧下プレス用のループ形成設備が提供される。
【0018】
また、別の本発明によれば、連続鋳造されたスラブを所定の板厚スラブに成形する板厚圧下プレス(33)と、板厚スラブを連続圧延し製品厚さの圧延材とする仕上圧延機群(34)との間で順次板厚スラブのループ形状の形成を開始するループ開始ロール群(50)と、一体的に取付けたピンチロール(61)の上下ロール間で板厚スラブに所定量のループ形状を形成させるループテーブル(64)を有する昇降自在なループ形成装置(65)と、板厚スラブのループ形状を矯正する矯正ロール群(55)と、板厚スラブを仕上圧延機群に搬入するピンチロール(38)と備え、仕上圧延機群前に配置されたピンチロール(38)の上下ロール間で板厚スラブの先端部を挟み込んで停止させた状態で、通板パスライン位置に置かれる板厚スラブをループテーブルと一体的に昇降自在なピンチロール(61)の上下ロール間に挟み込み、通板パスラインから下降させ板厚スラブにループ形状を形成させる、ことを特徴とする板厚圧下プレス用のループ形成方法が提供される。
【0019】
上記本発明の設備及び方法によれば、前述した昇降自在なループテーブルに取付けたループを形成可能とするガイドロールの代わりに、ピンチロールを取付けて一対の上下ロールのロール隙間(板厚プラス余裕代)を予め設定させて、このロール隙間に板厚スラブを挟み込んだ状態で、ピンチロールをループテーブルと共に一体的に下降させて所定量のループ形状を迅速かつ容易に形成させることができる。なお、ループテーブルに取付けたピンチロール以外は、前述した実施形態と同じ構成設備である。
【0020】
【発明の実施の形態】
以下、本発明の好ましい実施の形態を図面を参照して説明する。なお、各図において共通する部分には同一の符号を付し、重複した説明を省略する。
図1は、本発明の板厚圧下プレス用のループ形成設備の第1実施形態を示す全体構成図である。この図に示すように、本発明の板厚圧下プレス用のループ形成設備30は、連続鋳造されたスラブ31を上下一対の金型32を用いて所定の板厚スラブ31に成形する板厚圧下プレス33と、該板厚圧下プレス33の下流側に配置され搬送される板厚スラブ31を連続圧延し製品厚さの圧延材31´とする仕上圧延機群(5〜6台)34と、板厚圧下プレス33と仕上圧延機群34との間に配置されてこの間に搬送される厚い板厚スラブ31にループ形状を形成させる昇降自在なループ形成装置35と、仕上圧延機群34の上流側に配置される回転自在な上下ロール36、37を有するピンチロール38とを備えている。
このように、板厚圧下プレスと仕上圧延機群の間に昇降自在なループ形成装置を配置したので、板厚圧下プレスでの板厚成形時の変動する成形速度と、仕上圧延機群での圧延成形時の定常で不変の成形速度による両成形速度差並びに搬送時の速度差を同調させて容易に解消して、良質の圧延材を製造することができる。また、厚い板厚スラブ(例えば本実施例では約90mm)にループ形状を迅速に形成させることができるので、ループ形成長さLを短くして圧延ラインを短縮化できるので設備コストを低減できる。
【0021】
また、図1に示すように、ループ形成装置35は、上部が圧延ラインPを成す通板パスラインXを形成して回転自在な複数(本図では5本)の搬送ローラ40からなる搬送ローラ群41を配置するループテーブル42と、昇降自在なループテーブル42の中央部近傍に取付けられ板厚スラブ31の上面に接触してガイドし所定のループ形状を形成するガイド体43に内蔵されるガイドロール44と、ループテーブル42を昇降自在に支持する油圧シリンダ45とからなる。
このように、昇降自在なループテーブルの上部を、例えば5本の回転自在な搬送ローラ群を配置したので、通常の通板パスラインXとして使用する場合は、板厚圧下プレスからの板厚スラブを搬送ローラ群に載置させて下流側に容易に搬送させることができる。一方、ループ形状を形成させる場合には、油圧シリンダで支持されて昇降自在なループテーブルの中央部近傍で、かつ搬送ローラ群の上部に取付けられたガイドロールにより、通板パスラインXに載置された板厚スラブの上面に接触してガイドし下降させて、必要量Hのループ形状を迅速かつ容易に形成させることができる。
【0022】
また、板厚圧下プレス33とループ形成装置35との間に板厚スラブ31のループ形状の形成を開始させる複数(本図では3本)の回転自在なロール51乃至53からなるループ開始ロール群50を有している。このように、板厚圧下プレスの下流側に昇降自在なループ形成装置との間に複数のロールを板厚スラブを挟んで配置したので、通板パスラインから下方に向かって板厚スラブをガイドさせてループ形状の形成の開始を容易にできる。従って、板厚圧下プレスで板厚圧下されて所定の板厚(本実施例では約90mm)の板厚スラブを、下流側のループ形成装置によるループ形状の形成に先立って曲げ始めるで、ループ形成装置でのループ形状の形成が効率的にかつ容易にできる。更に、3番目のロール53を昇降自在としたので、ループ形状開始時にこのロールを板厚スラブの上面に押当て
て下降させるので、ループ形状をより容易に形成できる。
【0023】
更に、ループ形成装置35とピンチロール38との間に板厚スラブ31のループ形状を矯正する回転自在な複数(本図では3本)のロール56乃至58からなる矯正ロール群55を有する。
このように、昇降自在なループ形成装置と仕上圧延機群の上流側のピンチロールとの間に複数の回転自在なロールを板厚スラブを挟んで配置したので、ループ形成装置で形成された板厚スラブの曲り癖を容易に矯正させて通板パスラインに戻すことができる。従って、曲り癖のないストレート形状の板厚スラブをピンチロールを介して仕上圧延機群に円滑に、かつ迅速に搬送できる。
【0024】
また、図1において、ループ形成装置35を挟んでループ開始ロール群50と矯正ロール群55を配置させた。これにより、ループ形成装置によるループ形状の形成に先立ってループ開始ロール群で曲げ始めることができるので、ループ形成装置でのループ形状の形成が効率的にかつ容易にできる。一方、ループ形成装置の出側に矯正ロール群を配置させたので、ループ形成装置で形成された板厚スラブの曲り癖を容易に矯正して、通板パスラインXに戻すことができる。このように、3装置を通板パスラインX上に配列したので、板厚圧下プレスから成形された板厚スラブにループ形状を迅速かつ容易に形成できる。更に、所定のループ形状を確保させながら仕上圧延機群に迅速に搬送できるので、板厚スラブの圧延ラインでの成形及び搬送中での温度下降を減少させて、良好な圧延材を得る。
【0025】
次に、図1の板厚圧下プレス用のループ形成設備30を使用して本発明の板厚圧下プレス用のループ形成方法を説明する。上述の板厚圧下プレス33と、仕上圧延機群34と、板厚圧下プレス33と仕上圧延機群34間にループ開始ロール群50と、ガイドロール44を有して昇降自在なループ形成装置35と、ロール矯正ロール群55と、ピンチロール38とを備え、(1)板厚圧下プレス33の上下金型32で所定の板厚に成形された板厚スラブ31の先端部を、下流側で通常の通板パスラインX位置に配置されたループ開始ロール群50とループ形成装置35と矯正ロール群55とで順次ピンチロール38まで搬送し、ピンチロール38の上下ロール36、37間に挟み込んだ状態で停止させ、(2)次に矯正ロール群55とピンチロール38とを板厚スラブ31を保持し停止させた状態で、板厚圧下プレス33の板厚成形の作動を続行して板厚スラブ31を下流側に搬送し、(3)次にループ開始ロール群50も作動させ板厚スラブ31をガイドして下降させてループ形状の形成を開始させ、同時にループ開始ロール群50と連動させ一体的に取付けたループテーブル42のガイドロール44で板厚スラブ31の上面と接触してガイドさせながら通板パスラインXから下降させ、これらを同調させながら板厚スラブ31に所定量(LとH)のループ形状を形成させ、次に所定量のループ形状の形成を確認した後に矯正ロール群55の作動を開始してループ形状の板厚スラブ31を順次矯正して通板パスラインに戻し、更に所定量のループ形状を確保しつつピンチロール38と仕上圧延機群34の作動を作動させ圧延材31´を圧延製造する。これにより板厚圧下プレスの板厚成形と仕上圧延機群の圧延成形との成形速度差と更にこの間の夫々の装置間の搬送速度差とを同調可能とする。また、板厚スラブにループ形状を形成すると共に、板厚スラブの温度降下を防止できる。
【0026】
図2は、本発明の板厚圧下プレス用のループ形成設備の第2実施形態を示す全体構成図である。図2に示すように、本発明の板厚圧下プレス用のループ形成設備60は、前記第1実施形態の昇降自在なループテーブル42に一体的に取付けたガイドロール44の代わりにピンチロール式としたものである。
【0027】
図2において、本発明の板厚圧下プレス用のループ形成設備60は、連続鋳造されたスラブ31を所定の板厚スラブ31に成形する板厚圧下プレス33と、板厚スラブ31を連続圧延し製品厚さの圧延材31´とする仕上圧延機群34と、この間で順次板厚スラブ31のループ形状の形成を開始するループ開始ロール群50と、一体的に取付けるピンチロール61の上下ロール62と63間で板厚スラブ31を所定量のループ形状を形成させるループテーブル64を有する昇降自在なループ形成装置65と、板厚スラブ31のループ形状を矯正する矯正ロール群55と、板厚スラブ31を仕上圧延機群34に搬入するピンチロール38から構成される。また、昇降自在なループテーブル64は、前記のループテーブル42と同様に上部に圧延ラインPを成す通板パスラインXを形成して回転自在な例えば、5本の搬送ローラ67からなる搬送ローラ群68を配置している。このうちの真中の搬送ローラ67を、ピンチロール61の下ロール63として使用する。
【0028】
また、図2の板厚圧下プレス用のループ形成設備60を使用して本発明の板厚圧下プレス用のループ形成方法を説明する。前述の板厚圧下プレス33と、仕上圧延機群34と、この間に順次ループ開始ロール群50と、一体的に取付けるピンチロール61で所定量のループ形状を形成させるループテーブル64を有する昇降自在なループ形成装置65と、矯正ロール群55と、ピンチロール38を備え、 仕上圧延機群34前に配置されたピンチロール38の上下ロール36と37間で板厚スラブ31の先端部を挟み込んで停止させた状態で、通板パスラインX位置に置かれる板厚スラブ31をループテーブル64と一体的に昇降自在なピンチロール61の上下ロール62と63間に挟み込み、通板パスラインXから下降させ板厚スラブにループ形状を形成させる。これにより、ピンチロールを取付けて一対の上下ロールのロール隙間(板厚プラス余裕代)を予め設定させて、このロール隙間に板厚スラブを挟み込んだ状態で、ピンチロールをループテーブルと共に一体的に下降させて第1実施形態と同様に所定量(LとH)のループ形状を迅速かつ容易に形成させることができる。
【0029】
なお、本発明は上述した実施形態に限定されず、本発明の要旨を逸脱しない範囲で種々変更できることは勿論である。
【0030】
【発明の効果】
上述したように、本発明の板厚圧下プレス用のループ形成設備及びループ形成方法は、厚い板厚スラブにループ形状を迅速かつ容易に形成させ、板厚成形と圧延成形による成形速度差と搬送速度差を同調させて解消でき、板厚スラブの温度降下も防止することができる、等の優れた効果を有する。
【図面の簡単な説明】
【図1】本発明の板厚圧下プレス用のループ形成設備の第1実施形態を示す全体構成図である。
【図2】本発明の板厚圧下プレス用のループ形成設備の第2実施形態を示す全体構成図である。
【図3】従来のスラブ成形装置の模式図である。
【図4】本発明のループ形成装置の熱間圧延設備配置を示す模式図である。
【符号の説明】
1 スラブ成形装置
2、12、31 スラブ(板厚スラブ)
3、32 金型
4 プレス
5 溝付ロール
6 エッジャー
7 作業ロール
8 水平圧延機
10 熱間圧延設備
11 連続鋳造機
13 スラブ保加熱炉
14 幅圧下プレス
15、33 板厚圧下プレス
16 ループ装置
17 縦型圧延機
18、34 仕上圧延機
19、31´ 圧延材
20、38、61 ピンチロール
21 巻取機
30、60 ループ形成設備
35、65 ループ形成装置
36、62 上ロール
37、63 下ロール
40、67 搬送ローラ
41、68 搬送ローラ群
42、64 ループテーブル
43 ガイド体
44 ガイドロール
45 油圧シリンダ
50 ループ開始ロール群
51、52、53、56、57、58 ロール
55 矯正ロール群
P 圧延ライン
X 通板パスライン
L ループ形成長さ
H 必要量
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a loop forming facility and a loop forming method for a plate thickness reduction press that synchronizes a forming speed difference with a finish rolling mill group when a slab produced from a continuous casting apparatus is subjected to sheet thickness reduction with a plate thickness reduction slew. About.
[0002]
[Prior art]
In recent years, there has been invented and filed an application in which sheet thickness reduction on the upstream side of a slab cast by a continuous casting apparatus is performed by a sheet thickness reduction press regardless of the group of rough rolling mills (for example, Japanese Patent Application Laid-Open No. Sho 61-23502). ). In addition, in this application, a plate | board thickness slab means the slab after press molding.
[0003]
As shown in the schematic diagram of FIG. 3, the slab forming apparatus 1 includes a slab 2 manufactured by a continuous casting apparatus (not shown) having an inclined part and a parallel part continuous to the rolling line P in pairs. An edger having a press 4 that holds a mold 3 that presses the slab 2 down to a predetermined plate thickness and a grooved roll 5 that corrects a shape defect at the end of the slab width that occurs under the plate thickness pressure of the press 4 6 and a horizontal rolling mill 8 having a pair of upper and lower work rolls 7 downstream thereof. As a result, the slab can be pressed under high pressure by a press, so a large reduction amount can be obtained compared to rolling, and the number of rough rolling mills can be reduced by 5 to 6 with a single press, thereby reducing the equipment cost and shortening the rolling line. I can plan.
[0004]
[Problems to be solved by the invention]
The forming speed of the plate thickness slab that is formed and conveyed by the plate thickness reduction press to the passing plate pass line varies essentially. On the other hand, the entry side speed of the finishing mill group is a constant speed in the steady rolling, and the rolling speed does not rise and fall periodically by smoothly increasing and decreasing even during acceleration and deceleration. In order to synchronize the sheet thickness forming speed of the sheet thickness reduction press and the rolling speed of the finish rolling mill group, a loop device is required. However, as shown in FIG. 3, since this loop device is not arranged, it is difficult to adjust these speed differences, and it is difficult to prevent the productivity from decreasing, and the conveyance speed cannot be increased. There is a problem that the rolled material cannot be obtained.
[0005]
On the other hand, the applicant of the present application arranged a loop device between the press and the rolling mill in Japanese Patent Application No. 10-166545 “Hot rolling method and equipment” (application date: June 15, 1998). Applying for a rolling line.
[0006]
As shown in the schematic diagram of FIG. 4, the hot rolling facility 10 holds the slab 12 cast by the continuous casting machine 11 in a slab holding furnace 13 and reduces the width to a predetermined amount by a width reduction press 14. Further, the sheet thickness is reduced to a predetermined amount by a sheet thickness reduction press 15, retained for a necessary amount by a looper device 16, regulated in width by a vertical rolling mill 17, and rolled to the thickness of the final product by a finishing mill group 18. The rolling line P is configured such that the material 19 is rolled and wound in a coil shape by a winder 21 via a pinch roll 20. In this way, a looper device is arranged in the rolling line to form a loop shape in the sheet thickness slab, and to form a loop shape in the sheet thickness slab between the sheet thickness reduction press and the finish rolling mill group caused by the above-mentioned causes, and to reduce the necessary amount. Since it can be adjusted by retaining, it is possible to easily eliminate these speed differences and to continuously produce a rolled material at a high speed.
[0007]
However, since the looper device shown in FIG. 4 has a system in which the loop shape is formed by the weight of the plate slab that conveys the loop shape, a considerably long plate-passing line is required to form the loop. In order to form a loop shape within the elastic deformation of a slab having a plate thickness, a length of 10 tens M or more is required, which causes a problem that the rolling line is extended. Further, in the case of FIG. 4, the plate thickness slab is conveyed from the plate thickness reduction press by forming a loop with its own weight in a heat dissipation state without taking any heat retention measures over a considerably long distance of this looper device. Therefore, it is carried into the finishing mill group in a state where the temperature has dropped considerably. Due to the effect of this temperature drop, the entrance temperature of the finishing mill group necessary for the rolling forming of the final product thickness cannot be secured, so that there is a problem that it becomes impossible to produce a high-quality rolled material.
[0008]
The present invention has been developed to solve such problems. That is, the object of the present invention is to form a loop shape quickly and easily even with a thick plate slab, and to eliminate the difference between the forming speed difference between the press forming and the rolling forming and the conveying speed difference. It is an object of the present invention to provide a loop forming facility and a loop forming method for a plate thickness reduction press capable of preventing a temperature drop.
[0009]
[Means for Solving the Problems]
According to the present invention, a plate thickness reduction press (33) for forming a continuously cast slab (31) into a predetermined plate thickness slab using a pair of upper and lower molds, and a downstream side of the plate thickness reduction press The plate thickness slab to be conveyed is continuously rolled to form a rolled product having a product thickness, and is disposed between the finishing rolling mill group (34), and can freely move up and down to form a loop shape on the sheet thickness slab to be conveyed. A loop forming device (35) and a pinch roll (38) having rotatable upper and lower rolls arranged on the upstream side of the finishing rolling mill group ,
The loop forming device (35) guides the loop table (42) on which the conveying roller group is installed and the upper surface of the plate thickness slab attached to the freely movable up and down loop table to form a predetermined loop shape. A guide roll (44),
A plate thickness slab passes between the conveying roller group and the upper and lower sides of the guide roll,
For the plate thickness reduction press , wherein the guide roll is integrally attached to the loop table (42) so that the guide roll and the transport roller group are integrally raised and lowered . A loop forming facility is provided.
According to a preferred embodiment of the present invention, the loop forming device (35) further includes a hydraulic cylinder (45) that supports the loop table to be movable up and down, and the transport roller group has a through-plate pass line at the top. The guide roll is formed and attached near the center of the loop table (42).
[0010]
According to the configuration of the present invention, since the loop forming device that can be raised and lowered is arranged between the sheet thickness reduction press and the finishing mill group, the forming speed that varies during the sheet thickness forming in the sheet thickness reduction press, A high-quality rolled material can be produced by easily eliminating the difference in both forming speeds due to the steady and invariable forming speed during rolling forming in the rolling mill group and the speed difference during conveyance. In addition, the loop shape can be quickly formed on a thick plate slab (for example, about 90 mm) after the plate is formed by pressing, so the length of the loop can be shortened to shorten the rolling line and reduce equipment costs. it can.
[0011]
Moreover, when using as a normal plate-passing pass line, the plate | board thickness slab from a plate | board thickness reduction press can be mounted in a conveyance roller group, and can be easily conveyed downstream. On the other hand, when forming a loop shape, it is placed on the pass plate pass line by a guide roll mounted near the center of a loop table supported by a hydraulic cylinder and freely movable up and down, and at the top of the transport roller group. The upper surface of the plate thickness slab can be pressed and lowered to quickly and easily form the required amount of loop shape.
[0012]
Furthermore, according to a preferred embodiment of the present invention, the loop start roll group (50) for starting the formation of the loop shape of the plate thickness slab is provided between the plate thickness reduction press and the loop forming apparatus.
With this configuration, a plurality of (three in this figure) rotatable rolls are placed on the downstream side of the plate thickness reduction press and with a loop forming device that can move up and down, with a plate thickness slab in between. The formation of the loop shape can be easily started by guiding the thickness slab downward from the line. As a result, it is possible to start bending a plate thickness slab of a predetermined plate thickness (for example, about 90 mm) by a plate thickness reduction press prior to the formation of the loop shape by the downstream loop forming device. It is possible to efficiently and easily form a loop shape in the forming apparatus. Further, if the third roll is disposed so as to be movable up and down, this roll is pressed against the upper surface of the plate thickness slab at the start of the loop shape, so that the loop shape can be formed more easily.
[0013]
Furthermore, according to a preferred embodiment of the present invention, there is a correction roll group (55) for correcting the loop shape of the plate thickness slab between the loop forming device and the pinch roll.
With this configuration, a plurality of rotatable rolls are arranged with a plate thickness slab sandwiched between a loop forming device that can be raised and lowered and a pinch roll on the upstream side of the finishing rolling mill group, so that the plate formed by the loop forming device Can easily correct bent slabs of thick slabs and return them to the pass-through pass line. Therefore, a straight-shaped plate thickness slab having no curl can be smoothly and quickly conveyed to the finishing mill group via the pinch rolls.
[0014]
Furthermore, according to a preferred embodiment of the present invention, the loop start roll group (50) and the straightening roll group (55) are arranged across the loop forming apparatus.
With this configuration, the loop start roll group and the straightening are sandwiched with a loop forming device composed of an up and down loop table attached with a guide roll that easily forms a predetermined loop shape in contact with the upper surface of the plate slab near the center. Roll groups were placed. Since the loop start roll group to be the entry side device of the loop forming device is arranged, it is possible to start bending before forming the loop shape by the loop forming device, so that the loop forming device can efficiently form the loop shape. Easy to do. On the other hand, since the correction roll group which becomes the exit side device of the loop forming device is arranged, it is possible to easily correct the bending wrinkles of the plate thickness slab formed by the loop forming device and return it to the passing plate pass line. As described above, since the three apparatuses are arranged on the plate pass line, a predetermined loop shape can be quickly and easily formed on the plate thickness slab which has been plate thickness reduced from the plate thickness reduction press. Furthermore, since it can be quickly conveyed to the finishing rolling mill group while ensuring a predetermined loop shape, it is possible to obtain a good rolled material by reducing the temperature drop during forming and conveying in the rolling line of the plate thickness slab. it can.
[0015]
Further, according to the present invention, a plate thickness reduction press (32) for forming a continuously cast slab into a predetermined plate thickness slab, and a finish rolling mill group that continuously rolls the plate thickness slab into a rolled product having a product thickness. (34) and a loop start roll group (50) for starting the formation of the loop shape of the plate thickness slab in turn, and a loop table (42) on which a conveying roller group is installed and the loop table which can be moved up and down. and guide contacts the upper surface of the plate thickness slab vertically movable loop forming device having a guide roll that forms a predetermined loop shape (35), straightening rolls for straightening a loop shape having a thickness of the slab (55) a pinch roll (38) for carrying the mill group finish the thickness slab comprises, being adapted to the thickness slab passes between the upper and lower of said guide roll and the transport rollers, the guide roll Said By integrally attached to the loop table (42), said guide roll and said loop table (42) and are adapted to be integrally lifting,
(A) A loop start roll group (50) in which the front end of a plate thickness slab formed to a predetermined plate thickness by an upper and lower mold of a plate thickness reduction press is disposed at a normal sheet passing pass line position on the downstream side; The loop forming device (35) and the correction roll group (55) are sequentially conveyed to the pinch roll (38), and the slab tip is stopped while being sandwiched between the upper and lower rolls of the pinch roll,
(B) then the loop start rolls (50) is also lowered by guiding actuated allowed thickness slabs to initiate the formation of a loop shape, the guide of the loop table (42) is interlocked with the loop start rolls simultaneously While being guided by contact with the upper surface of the plate thickness slab with rolls, a predetermined amount of loop shape is formed on the plate thickness slab while synchronizing these,
(C) Next, after confirming the formation of a predetermined amount of the loop shape, the operation of the correction roll group (55) is started to sequentially correct the loop-shaped plate thickness slab and return it to the through plate pass line. While ensuring the loop shape, the operation of the pinch roll and the finish rolling mill group is operated, thereby the difference in the forming speed between the plate thickness forming of the sheet thickness reduction press and the rolling forming of the finish rolling mill group, and between the respective apparatuses in the meantime. It is possible to provide a loop forming method for sheet thickness reduction press, which can synchronize with a difference in conveyance speed.
[0016]
According to the above-described method of the present invention, the tip portion of the plate thickness slab that has been pressed down to a predetermined plate thickness by the plate thickness reduction press is passed through the loop forming device arranged at the position of the normal plate passing line X. Can be conveyed to a pinch roll arranged on the entry side of the finishing mill group. Furthermore, the loop start roll group and the correction roll group are operated with a loop forming device composed of a freely movable up and down loop table attached with a guide roll forming a loop shape with the tip portion of the plate thickness slab sandwiched between pinch rolls. Thus, a predetermined amount of loop shape can be quickly and easily formed on the plate thickness slab. Furthermore, while preventing the temperature drop, the difference between the two forming speeds due to the changing forming speed at the time of forming the sheet thickness in the plate thickness reduction press, and the steady and invariable forming speed at the time of the rolling forming in the finishing rolling mill group, and at the time of transporting A high-quality rolled material can be manufactured by eliminating the speed difference in synchronization.
[0017]
Further, according to another aspect of the present invention, a plate thickness reduction press (33) for forming a continuously cast slab into a predetermined plate thickness slab, and finish rolling to continuously roll the plate thickness slab into a rolled product having a product thickness. Between the machine group (34), the loop start roll group (50) for starting the formation of the loop shape of the plate thickness slab sequentially, and the plate thickness slab between the upper and lower rolls of the pinch roll (61) attached integrally. A movable loop forming device (65) having a loop table (64) for forming a fixed loop shape, a correction roll group (55) for correcting the loop shape of the plate thickness slab, and a finishing mill group for finishing the plate thickness slab And a pinch roll (38) to be carried in, a loop forming facility for sheet thickness reduction press is provided.
[0018]
Further, according to another aspect of the present invention, a plate thickness reduction press (33) for forming a continuously cast slab into a predetermined plate thickness slab, and finish rolling to continuously roll the plate thickness slab into a rolled product having a product thickness. Between the machine group (34), the loop start roll group (50) for starting the formation of the loop shape of the plate thickness slab sequentially, and the plate thickness slab between the upper and lower rolls of the pinch roll (61) attached integrally. A movable loop forming device (65) having a loop table (64) for forming a fixed loop shape, a correction roll group (55) for correcting the loop shape of the plate thickness slab, and a finishing mill group for finishing the plate thickness slab With the pinch roll (38) to be carried in, and the end of the sheet thickness slab is sandwiched between the upper and lower rolls of the pinch roll (38) arranged in front of the finishing mill group and stopped, and the pass plate pass line position Board thickness placed on For sheet thickness reduction press, characterized in that a pin is sandwiched between upper and lower rolls of a pinch roll (61) that can be moved up and down integrally with a loop table, and is lowered from a sheet pass line to form a loop shape in a sheet thickness slab A loop forming method is provided.
[0019]
According to the above-mentioned equipment and method of the present invention, instead of the guide roll that can form the loop attached to the above-described up and down loop table, a pinch roll is attached and a roll gap between the pair of upper and lower rolls (plate thickness plus margin) The pinch roll is lowered together with the loop table in a state where the sheet thickness slab is sandwiched between the roll gaps, and a predetermined amount of the loop shape can be formed quickly and easily. In addition, it is the same structural equipment as embodiment mentioned above except the pinch roll attached to the loop table.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.
FIG. 1 is an overall configuration diagram showing a first embodiment of a loop forming facility for sheet thickness reduction press according to the present invention. As shown in this figure, the loop forming facility 30 for sheet thickness reduction press according to the present invention is a sheet thickness reduction for forming a continuously cast slab 31 into a predetermined sheet thickness slab 31 using a pair of upper and lower molds 32. A press 33 and a finish rolling mill group (5 to 6 units) 34 that continuously rolls a sheet thickness slab 31 disposed and conveyed downstream of the sheet thickness reduction press 33 to obtain a rolled material 31 ′ having a product thickness; A loop forming device 35 that can be moved up and down to form a loop shape on the thick plate slab 31 that is arranged between the plate thickness reduction press 33 and the finish rolling mill group 34 and is conveyed therebetween, and upstream of the finishing mill group 34. And a pinch roll 38 having rotatable upper and lower rolls 36 and 37 disposed on the side.
In this way, since the loop forming device that can be moved up and down is arranged between the sheet thickness reduction press and the finishing mill group, the forming speed that fluctuates during sheet thickness forming with the sheet thickness reduction press, and the finishing mill group A high-quality rolled material can be manufactured by easily eliminating the difference in both forming speeds due to the steady and invariable forming speed during rolling forming and the speed difference during conveying. Further, since the loop shape can be quickly formed on a thick plate slab (for example, about 90 mm in the present embodiment), the loop formation length L can be shortened to shorten the rolling line, so that the equipment cost can be reduced.
[0021]
Further, as shown in FIG. 1, the loop forming device 35 includes a plurality of (five in this figure) conveying rollers 40 that form a through plate pass line X whose upper part forms a rolling line P and are rotatable. A loop table 42 in which the group 41 is arranged, and a guide built in a guide body 43 that is attached near the center of the loop table 42 that can be raised and lowered and that contacts and guides the upper surface of the plate thickness slab 31 to form a predetermined loop shape. It comprises a roll 44 and a hydraulic cylinder 45 that supports the loop table 42 so as to be movable up and down.
In this way, the upper part of the freely movable loop table is provided with, for example, a group of five rotatable transport rollers, so that when used as a normal plate passing line X, the plate thickness slab from the plate thickness reduction press is used. Can be placed on the transport roller group and easily transported downstream. On the other hand, when forming a loop shape, it is placed on the passing plate pass line X by a guide roll mounted near the center of a loop table supported by a hydraulic cylinder and freely movable up and down and above the transport roller group. The required amount H of the loop shape can be formed quickly and easily by contacting and guiding and lowering the upper surface of the plate thickness slab.
[0022]
Further, a loop start roll group composed of a plurality of (three in this figure) rotatable rolls 51 to 53 for starting the formation of the loop shape of the plate thickness slab 31 between the plate thickness reduction press 33 and the loop forming device 35. 50. As described above, since a plurality of rolls are arranged with the plate thickness slab sandwiched between the loop forming device that can be moved up and down downstream of the plate thickness reduction press, the plate thickness slab is guided downward from the plate passing line. This makes it easy to start the formation of the loop shape. Therefore, a plate thickness slab which has been reduced in thickness by a plate thickness reduction press and starts to bend a plate thickness slab having a predetermined plate thickness (about 90 mm in this embodiment) prior to the formation of the loop shape by the downstream loop forming apparatus is formed. The loop shape can be formed efficiently and easily in the apparatus. Further, since the third roll 53 can be moved up and down, this roll is pressed against the upper surface of the plate slab at the start of the loop shape and lowered, so that the loop shape can be formed more easily.
[0023]
Further, a correction roll group 55 including a plurality of (three in this figure) rotatable rolls 56 to 58 for correcting the loop shape of the plate thickness slab 31 is provided between the loop forming device 35 and the pinch roll 38.
As described above, since a plurality of rotatable rolls are arranged with a plate thickness slab between the loop forming apparatus that can be raised and lowered and the pinch roll on the upstream side of the finishing mill group, the plate formed by the loop forming apparatus Thick slab bends can be easily corrected and returned to the threading pass line. Therefore, a straight-shaped plate thickness slab having no curl can be smoothly and quickly conveyed to the finishing mill group via the pinch rolls.
[0024]
Further, in FIG. 1, a loop start roll group 50 and a correction roll group 55 are arranged with the loop forming device 35 interposed therebetween. Accordingly, since it is possible to start bending with the loop start roll group prior to the formation of the loop shape by the loop forming apparatus, it is possible to efficiently and easily form the loop shape with the loop forming apparatus. On the other hand, since the group of correction rolls is arranged on the exit side of the loop forming apparatus, it is possible to easily correct the bending wrinkles of the plate thickness slab formed by the loop forming apparatus and return it to the plate passing line X. As described above, since the three devices are arranged on the plate pass line X, a loop shape can be formed quickly and easily on the plate thickness slab formed from the plate thickness reduction press. Furthermore, since it can be rapidly conveyed to the finishing rolling mill group while ensuring a predetermined loop shape, the temperature drop during forming and conveying in the rolling line of the plate thickness slab is reduced, and a good rolled material is obtained.
[0025]
Next, the loop forming method for sheet thickness reduction press according to the present invention will be described using the loop forming facility 30 for sheet thickness reduction press of FIG. The above-described sheet thickness reduction press 33, finish rolling mill group 34, a loop forming roll 35 having a loop start roll group 50 and a guide roll 44 between the sheet thickness reduction press 33 and the finishing rolling mill group 34 and capable of moving up and down. And a roll straightening roll group 55 and a pinch roll 38. (1) A tip end portion of a plate thickness slab 31 formed to a predetermined plate thickness by the upper and lower molds 32 of the plate thickness reduction press 33 is provided on the downstream side. The loop start roll group 50, the loop forming device 35, and the correction roll group 55 arranged at the normal plate pass line X position are sequentially conveyed to the pinch roll 38 and sandwiched between the upper and lower rolls 36 and 37 of the pinch roll 38. (2) Next, in the state where the straightening roll group 55 and the pinch roll 38 are held and stopped while holding the plate thickness slab 31, the plate thickness reduction press 33 continues the plate thickness forming operation and continues the plate thickness. Slab 31 (3) Next, the loop start roll group 50 is also actuated to guide and lower the plate thickness slab 31 to start the formation of the loop shape. The guide roll 44 of the loop table 42 attached is brought into contact with the upper surface of the plate thickness slab 31 while being guided and lowered from the plate passing path X, and a predetermined amount (L and H) is applied to the plate thickness slab 31 while synchronizing them. After forming the loop shape, and confirming the formation of a predetermined amount of the loop shape, the operation of the straightening roll group 55 is started to sequentially correct the loop-shaped thickness slab 31 and return it to the threading pass line. The rolling material 31 'is rolled and manufactured by operating the pinch roll 38 and the finish rolling mill group 34 while securing a fixed loop shape. This makes it possible to synchronize the forming speed difference between the plate thickness forming of the plate thickness reduction press and the rolling forming of the finish rolling mill group, and the difference in the conveying speed between the respective apparatuses. In addition, a loop shape can be formed in the plate thickness slab and temperature drop of the plate thickness slab can be prevented.
[0026]
FIG. 2 is an overall configuration diagram showing a second embodiment of a loop forming facility for sheet thickness reduction press according to the present invention. As shown in FIG. 2, the loop forming facility 60 for sheet thickness reduction press according to the present invention is a pinch roll type instead of the guide roll 44 integrally attached to the up and down freely movable loop table 42 of the first embodiment. It is a thing.
[0027]
In FIG. 2, the loop forming facility 60 for the plate thickness reduction press according to the present invention continuously rolls the plate thickness slab 31 and the plate thickness reduction press 33 for forming the continuously cast slab 31 into a predetermined plate thickness slab 31. Finishing rolling mill group 34 to be rolled material 31 ′ of product thickness, loop start roll group 50 for starting the formation of the loop shape of the plate thickness slab 31 in the meantime, and upper and lower rolls 62 of pinch roll 61 to be integrally attached. , 63 and 63, a loop forming device 65 having a loop table 64 for forming a predetermined amount of loop shape of the plate thickness slab 31, a correction roll group 55 for correcting the loop shape of the plate thickness slab 31, and a plate thickness slab It is comprised from the pinch roll 38 which carries 31 in the finishing mill group 34. FIG. In addition, the loop table 64 that can be moved up and down is formed of a transport roller group including, for example, five transport rollers 67 that can freely rotate by forming a through-plate pass line X that forms a rolling line P on the upper portion, like the loop table 42. 68 is arranged. Among these, the middle conveyance roller 67 is used as the lower roll 63 of the pinch roll 61.
[0028]
Further, the loop forming method for sheet thickness reduction press according to the present invention will be described using the sheet thickness reduction press loop forming facility 60 of FIG. The plate thickness reduction press 33, the finishing rolling mill group 34, the loop start roll group 50 in the meantime, and the loop table 64 for forming a predetermined amount of loop shape with the pinch roll 61 attached integrally therewith are movable up and down. A loop forming device 65, a straightening roll group 55, and a pinch roll 38 are provided, and the front end of the plate thickness slab 31 is sandwiched between the upper and lower rolls 36 and 37 of the pinch roll 38 disposed in front of the finishing mill group 34 and stopped. In this state, the plate thickness slab 31 placed at the position of the passing plate pass line X is sandwiched between the upper and lower rolls 62 and 63 of the pinch roll 61 that can be moved up and down integrally with the loop table 64 and lowered from the passing plate pass line X. A loop shape is formed on the plate thickness slab. As a result, the pinch roll is attached and the roll gap (plate thickness plus margin) of the pair of upper and lower rolls is set in advance, and the pinch roll is integrated with the loop table in a state where the plate thickness slab is sandwiched between the roll gaps. The loop shape of a predetermined amount (L and H) can be quickly and easily formed by lowering as in the first embodiment.
[0029]
In addition, this invention is not limited to embodiment mentioned above, Of course, it can change variously in the range which does not deviate from the summary of this invention.
[0030]
【The invention's effect】
As described above, the loop forming equipment and the loop forming method for the plate thickness reduction press according to the present invention allows a loop shape to be formed quickly and easily on a thick plate thickness slab, and the forming speed difference between the plate thickness forming and the rolling forming and the conveyance. The speed difference can be eliminated in synchronization, and the temperature drop of the plate thickness slab can be prevented.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram showing a first embodiment of a loop forming facility for sheet thickness reduction press according to the present invention.
FIG. 2 is an overall configuration diagram showing a second embodiment of a loop forming facility for sheet thickness reduction press according to the present invention.
FIG. 3 is a schematic view of a conventional slab forming apparatus.
FIG. 4 is a schematic view showing the arrangement of hot rolling equipment in the loop forming apparatus of the present invention.
[Explanation of symbols]
1 Slab forming device 2, 12, 31 Slab (plate thickness slab)
3, 32 Die 4 Press 5 Grooved roll 6 Edger 7 Work roll 8 Horizontal rolling mill 10 Hot rolling equipment 11 Continuous casting machine 13 Slab holding furnace 14 Width reduction press 15, 33 Plate thickness reduction press 16 Loop device 17 Vertical Die rolling mill 18, 34 Finish rolling mill 19, 31 'Rolled material 20, 38, 61 Pinch roll 21 Winder 30, 60 Loop forming equipment 35, 65 Loop forming device 36, 62 Upper roll 37, 63 Lower roll 40, 67 Conveying rollers 41, 68 Conveying roller groups 42, 64 Loop table 43 Guide body 44 Guide roll 45 Hydraulic cylinder 50 Loop starting roll groups 51, 52, 53, 56, 57, 58 Roll 55 Straightening roll group P Rolling line X Feeding plate Pass line L Loop formation length H Required amount

Claims (8)

連続鋳造されたスラブ(31)を上下一対の金型を用いて所定の板厚スラブに成形する板厚圧下プレス(33)と、該板厚圧下プレスの下流側に配置され搬送される板厚スラブを連続圧延し製品厚さの圧延材とする仕上圧延機群(34)との間に配置され、この間に搬送される板厚スラブにループ形状を形成させる昇降自在なループ形成装置(35)と、仕上圧延機群の上流側に配置される回転自在な上下ロールを有するピンチロール(38)と、を備え
前記ループ形成装置(35)は、搬送ローラ群が設置されたループテーブル(42)と、昇降自在な該ループテーブルに取付けられ板厚スラブの上面を接触してガイドし所定のループ形状を形成させるガイドロール(44)と、を備え、
前記搬送ローラ群と前記ガイドロールとの上下間を板厚スラブが通過するようになっており、
前記ガイドロールは前記ループテーブル(42)に一体的に取付けられることで、前記ガイドロールと前記搬送ローラ群とが一体的に昇降されるようになっていることを特徴とする板厚圧下プレス用のループ形成設備。
A plate thickness reduction press (33) for forming the continuously cast slab (31) into a predetermined plate thickness slab using a pair of upper and lower molds, and a plate thickness disposed and conveyed downstream of the plate thickness reduction press A loop forming device (35) that can be moved up and down to form a loop shape on a sheet thickness slab that is disposed between a finishing rolling mill group (34) that continuously rolls a slab to obtain a rolled product having a product thickness. And a pinch roll (38) having rotatable upper and lower rolls arranged on the upstream side of the finishing mill group ,
The loop forming device (35) guides the loop table (42) on which the conveying roller group is installed and the upper surface of the plate thickness slab attached to the freely movable up and down loop table to form a predetermined loop shape. A guide roll (44),
A plate thickness slab passes between the conveying roller group and the upper and lower sides of the guide roll,
For the plate thickness reduction press , wherein the guide roll is integrally attached to the loop table (42) so that the guide roll and the transport roller group are integrally raised and lowered . Loop forming equipment.
前記ループ形成装置(35)は、前記ループテーブルを昇降自在に支持する油圧シリンダ(45)をさらに備え、
前記搬送ローラ群は、上部が通板パスラインを形成し、前記ガイドロールは、前記ループテーブル(42)の中央部近傍に取付けられていることを特徴とする請求項1に記載の板厚圧下プレス用のループ形成設備。
The loop forming device (35) further comprises a hydraulic cylinder (45) for supporting the loop table vertically movably,
2. The plate thickness reduction according to claim 1 , wherein an upper portion of the conveying roller group forms a plate-passing line, and the guide roll is attached in the vicinity of a central portion of the loop table (42). Loop forming equipment for press.
板厚圧下プレスとループ形成装置との間に板厚スラブのループ形状の形成を開始させるループ開始ロール群(50)を有すること、を特徴とする請求項1又は2に記載の板厚圧下プレス用のループ形成設備。  The sheet thickness reduction press according to claim 1 or 2, further comprising a loop start roll group (50) for starting formation of a loop shape of the sheet thickness slab between the sheet thickness reduction press and the loop forming apparatus. Loop forming equipment for ループ形成装置とピンチロールとの間に板厚スラブのループ形状を矯正する矯正ロール群(55)を有すること、を特徴とする請求項1又は2に記載の板厚圧下プレス用のループ形成設備。  The loop forming equipment for press-pressing a plate thickness according to claim 1 or 2, further comprising: a correction roll group (55) for correcting the loop shape of the plate thickness slab between the loop forming device and the pinch roll. . ループ形成装置を挟んでループ開始ロール群(50)と矯正ロール群(55)を配置する、ことを特徴とする請求項1又は2に記載の板厚圧下プレス用のループ形成設備。  The loop forming equipment for sheet thickness reduction press according to claim 1 or 2, wherein a loop starting roll group (50) and a straightening roll group (55) are arranged with a loop forming device interposed therebetween. 連続鋳造されたスラブを所定の板厚スラブに成形する板厚圧下プレス(32)と、板厚スラブを連続圧延し製品厚さの圧延材とする仕上圧延機群(34)との間で順次板厚スラブのループ形状の形成を開始するループ開始ロール群(50)と、搬送ローラ群が設置されたループテーブル(42)と昇降自在な該ループテーブルに取付けられ板厚スラブの上面を接触してガイドし所定のループ形状を形成するガイドロールを有する昇降自在なループ形成装置(35)と、板厚スラブのループ形状を矯正する矯正ロール群(55)と、板厚スラブを仕上圧延機群に搬入するピンチロール(38)と、を備え、前記搬送ローラ群と前記ガイドロールとの上下間を板厚スラブが通過するようになっており、前記ガイドロールは前記ループテーブル(42)に一体的に取付けられることで、前記ガイドロールと前記ループテーブル(42)とが一体的に昇降されるようになっており、
(A)板厚圧下プレスの上下金型で所定の板厚に成形された板厚スラブの先端部を、下流側で通常の通板パスライン位置に配置されたループ開始ロール群(50)とループ形成装置(35)と矯正ロール群(55)とで順次ピンチロール(38)まで搬送し、ピンチロールの上下ロールに挟み込んだ状態でスラブ先端を停止させ、
(B)次にループ開始ロール群(50)も作動させ板厚スラブをガイドして下降させてループ形状の形成を開始させ、同時にループ開始ロール群と連動させ前記ループテーブル(42)の前記ガイドロールで板厚スラブの上面と接触してガイドさせながら通板パスラインから下降させ、これらを同調させながら板厚スラブに所定量のループ形状を形成させ、
(C)次に所定量のループ形状の形成を確認した後に矯正ロール群(55)の作動を開始してループ形状の板厚スラブを順次矯正して通板パスラインに戻し、更に所定量のループ形状を確保しつつピンチロールと仕上圧延機群の作動を作動させ、これにより板厚圧下プレスの板厚成形と仕上圧延機群の圧延成形との成形速度差と更にこの間の夫々の装置間の搬送速度差とを同調可能とする、ことを特徴とする板厚圧下プレス用のループ形成方法。
Sequentially between a plate thickness reduction press (32) for forming a continuously cast slab into a predetermined plate thickness slab and a finish rolling mill group (34) that continuously rolls the plate thickness slab into a product thickness rolled material. A loop start roll group (50) for starting the formation of a loop shape of the plate thickness slab, a loop table (42) on which a transport roller group is installed, and an upper surface of the plate thickness slab attached to the freely movable up and down loop table are brought into contact with each other. Guide Te and vertically movable loop forming device having a guide roll that forms a predetermined loop shape (35), straightening rolls for straightening a loop shape having a thickness of the slab (55), mill finish plate thickness slab a pinch roll (38) for carrying a group, equipped with being adapted to the thickness slab passes between the upper and lower of said guide roll and the transport rollers, the guide roll is the loop table ( 2) By integrally attached to the guide roll and the loop table (42) and are adapted to be integrally lifting,
(A) A loop start roll group (50) in which the front end of a plate thickness slab formed to a predetermined plate thickness by an upper and lower mold of a plate thickness reduction press is disposed at a normal sheet passing pass line position on the downstream side; The loop forming device (35) and the correction roll group (55) are sequentially conveyed to the pinch roll (38), and the slab tip is stopped while being sandwiched between the upper and lower rolls of the pinch roll,
(B) then the loop start rolls (50) is also lowered by guiding actuated allowed thickness slabs to initiate the formation of a loop shape, the guide of the loop table (42) is interlocked with the loop start rolls simultaneously While being guided by contact with the upper surface of the plate thickness slab with rolls, a predetermined amount of loop shape is formed on the plate thickness slab while synchronizing these,
(C) Next, after confirming the formation of a predetermined amount of the loop shape, the operation of the correction roll group (55) is started to sequentially correct the loop-shaped plate thickness slab and return it to the through plate pass line. While ensuring the loop shape, the operation of the pinch roll and the finish rolling mill group is operated, thereby the difference in the forming speed between the plate thickness forming of the sheet thickness reduction press and the rolling forming of the finish rolling mill group, and between the respective apparatuses in the meantime. A loop forming method for sheet thickness reduction pressing, characterized in that it can be synchronized with a difference in conveyance speed of the sheet.
連続鋳造されたスラブを所定の板厚スラブに成形する板厚圧下プレス(33)と、板厚スラブを連続圧延し製品厚さの圧延材とする仕上圧延機群(34)との間で順次板厚スラブのループ形状の形成を開始するループ開始ロール群(50)と、一体的に取付けたピンチロール(61)の上下ロール間で板厚スラブに所定量のループ形状を形成させるループテーブル(64)を有する昇降自在なループ形成装置(65)と、板厚スラブのループ形状を矯正する矯正ロール群(55)と、板厚スラブを仕上圧延機群に搬入するピンチロール(38)と、を備えたことを特徴とする板厚圧下プレス用のループ形成設備。  Sequentially between a plate thickness reduction press (33) for forming a continuously cast slab into a predetermined plate thickness slab and a finish rolling mill group (34) that continuously rolls the plate thickness slab into a product thickness rolled material. A loop table (50) for starting the formation of the loop shape of the plate thickness slab and a loop table for forming a predetermined amount of loop shape on the plate thickness slab between the upper and lower rolls of the pinch roll (61) attached integrally. 64) having a freely elevating loop forming device (65), a correction roll group (55) for correcting the loop shape of the plate thickness slab, a pinch roll (38) for carrying the plate thickness slab into the finishing mill group, A loop forming facility for sheet thickness reduction press. 連続鋳造されたスラブを所定の板厚スラブに成形する板厚圧下プレス(33)と、板厚スラブを連続圧延し製品厚さの圧延材とする仕上圧延機群(34)との間で順次板厚スラブのループ形状の形成を開始するループ開始ロール群(50)と、一体的に取付けたピンチロール(61)の上下ロール間で板厚スラブに所定量のループ形状を形成させるループテーブル(64)を有する昇降自在なループ形成装置(65)と、板厚スラブのループ形状を矯正する矯正ロール群(55)と、板厚スラブを仕上圧延機群に搬入するピンチロール(38)と備え、仕上圧延機群前に配置されたピンチロール(38)の上下ロール間で板厚スラブの先端部を挟み込んで停止させた状態で、通板パスライン位置に置かれる板厚スラブをループテーブルと一体的に昇降自在なピンチロール(61)の上下ロール間に挟み込み、通板パスラインから下降させ板厚スラブにループ形状を形成させる、ことを特徴とする板厚圧下プレス用のループ形成方法。  Sequentially between a plate thickness reduction press (33) for forming a continuously cast slab into a predetermined plate thickness slab and a finish rolling mill group (34) that continuously rolls the plate thickness slab into a product thickness rolled material. A loop table (50) for starting the formation of the loop shape of the plate thickness slab and a loop table for forming a predetermined amount of loop shape on the plate thickness slab between the upper and lower rolls of the pinch roll (61) attached integrally. 64), and a straightening roll group (55) for correcting the loop shape of the plate thickness slab, and a pinch roll (38) for carrying the plate thickness slab into the finishing rolling mill group. The plate thickness slab placed at the passing plate pass line position in a state where the tip portion of the plate thickness slab is sandwiched and stopped between the upper and lower rolls of the pinch roll (38) arranged in front of the finishing rolling mill group is defined as Togetherness Vertical roll sandwiched between to form a loop-shaped thick slab plate is lowered from the sheet passing path line, the loop forming method for a plate thickness reduction press, characterized in that the vertically movable pinch roll (61) to.
JP15460499A 1999-06-02 1999-06-02 Loop forming equipment and loop forming method for sheet thickness reduction press Expired - Fee Related JP4281031B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15460499A JP4281031B2 (en) 1999-06-02 1999-06-02 Loop forming equipment and loop forming method for sheet thickness reduction press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15460499A JP4281031B2 (en) 1999-06-02 1999-06-02 Loop forming equipment and loop forming method for sheet thickness reduction press

Publications (2)

Publication Number Publication Date
JP2000343192A JP2000343192A (en) 2000-12-12
JP4281031B2 true JP4281031B2 (en) 2009-06-17

Family

ID=15587822

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15460499A Expired - Fee Related JP4281031B2 (en) 1999-06-02 1999-06-02 Loop forming equipment and loop forming method for sheet thickness reduction press

Country Status (1)

Country Link
JP (1) JP4281031B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103182395A (en) * 2013-04-12 2013-07-03 马钢(集团)控股有限公司 Vertical loop device for high-speed wire rod rolling mill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5652800B1 (en) * 2014-02-03 2015-01-14 Jdc株式会社 Slitter line loop volume absorber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103182395A (en) * 2013-04-12 2013-07-03 马钢(集团)控股有限公司 Vertical loop device for high-speed wire rod rolling mill

Also Published As

Publication number Publication date
JP2000343192A (en) 2000-12-12

Similar Documents

Publication Publication Date Title
JP4281031B2 (en) Loop forming equipment and loop forming method for sheet thickness reduction press
JP4016233B2 (en) Sheet thickness reduction press equipment and method
JP3758897B2 (en) Loop heat insulation equipment for sheet thickness reduction press
JP4165723B2 (en) Hot rolling method and equipment
JP2002219501A (en) Manufacturing method of hot steel strip and its manufacturing facilities
JP2002503155A (en) Manufacture of metal strip
JP4062107B2 (en) Method and apparatus for forming loop for pressing plate thickness
JP4161453B2 (en) Hot material thickness press machine
JP3980740B2 (en) Hot rolling method and equipment
JP3160519B2 (en) Hot rolling line
JP2001121211A (en) Pinch roller for carrying a plurality of structural steels
JPH04147701A (en) Cross sizing method for hot slab
JPS61216802A (en) Method and apparatus for cross rolling down of hot slab
CN110944770B (en) Continuous casting installation and corresponding method
JP2002336909A (en) Variable offset pinch roll device
JPH1133601A (en) Rolling equipment
JP4159456B2 (en) Sheet rolling machine with excellent shape controllability and sheet feeding
JPS6354444B2 (en)
JPH11156406A (en) Method for plate thickness reduction and equipment therefor
JP3667857B2 (en) Hot strip steel rolling equipment
JPH0394908A (en) Device and method for preventing buckling at slab width sizing
JP6304498B2 (en) Camber suppression method in hot slab sizing press
JP3254151B2 (en) Hot slab sizing press method and apparatus
JPH0215822A (en) Straightening apparatus for shape of hot rolled stock
JP2000126803A (en) Hot rolling method and facility

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20050809

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050822

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20050809

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080407

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080521

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090220

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090305

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120327

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees