JPH06254606A - Press apparatus for rolling down width - Google Patents

Press apparatus for rolling down width

Info

Publication number
JPH06254606A
JPH06254606A JP4420493A JP4420493A JPH06254606A JP H06254606 A JPH06254606 A JP H06254606A JP 4420493 A JP4420493 A JP 4420493A JP 4420493 A JP4420493 A JP 4420493A JP H06254606 A JPH06254606 A JP H06254606A
Authority
JP
Japan
Prior art keywords
slab
width
buckling
width reduction
rolls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4420493A
Other languages
Japanese (ja)
Other versions
JP3189919B2 (en
Inventor
Nobuhiro Tazoe
信広 田添
Kenichi Ide
賢一 井出
Setsuo Matsunuma
世津雄 松沼
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 JP04420493A priority Critical patent/JP3189919B2/en
Publication of JPH06254606A publication Critical patent/JPH06254606A/en
Application granted granted Critical
Publication of JP3189919B2 publication Critical patent/JP3189919B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To restram buckling at the front and rear ends of a slab by equipping a pair of upper and lower main holding rolls in the center of the slab width and plural upper and lower holding rolls at either an inlet side or an outlet side of width rolling down dies to be moved in the width direction and in the transporting direction. CONSTITUTION:A press apparatus for rolling down an edge is constituted of a pair of width rolling down dies 2 for rolling down the slab 1 in its width direction, a pair of upper and lower main pressing rolls 10 installed between the dies 2 in the central part in the width direction of the slab 1, two upper and lower pressing rolls 12 installed on the inlet sides of said dies 2 and three lower pressing rolls 15. The main pressing roll 10 can oscillate a holding position and a separating position, the upper pressing roll 12 can move in its width direction, the lower pressing roll 15 is constituted so that it can move in the direction transferring the slab. When these rolls are driven by hydraulic pressure cylinders 13, 16, different shapes of buckling are restrained. In this way, this device can correspond to the change of the slab width and prevent buckling over the whole length containing the front and rear ends of the slab.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、幅圧下プレス装置に係
わり、特にスラブ材端部の座屈に有効な幅圧下プレス装
置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a width reduction press device, and more particularly to a width reduction press device effective for buckling of the end portion of a slab material.

【0002】[0002]

【従来の技術】スラブ材の幅調整を行う装置として、幅
圧下ロール装置と、幅圧下プレス装置が従来から用いら
れている。このうち幅圧下プレス装置(スラブサイジン
グプレス装置)は、金型とスラブとの接触長さが大き
く、この長い接触長で幅圧下を行うため良好な幅圧下が
得られ、かつ1回で大きな幅圧下量が得られるという有
用性がある。このため、幅圧下プレス装置を水平圧延設
備と組み合わせてストリップ(圧延材)を製造する手段
が従来から用いられている。
2. Description of the Related Art As a device for adjusting the width of a slab material, a width reduction roll device and a width reduction press device have been conventionally used. Of these, the width reduction press machine (slab sizing press machine) has a large contact length between the die and the slab, and performs width reduction with this long contact length, so that good width reduction can be obtained, and a large width can be obtained at one time. There is a usefulness that a reduction amount can be obtained. For this reason, a means for manufacturing a strip (rolled material) by combining a width reduction press with horizontal rolling equipment has been conventionally used.

【0003】[0003]

【発明が解決しようとする課題】しかし、幅圧下プレス
装置で大きな幅圧下を行うと圧下の際にスラブが上下方
向に座屈するという問題があった。このような座屈が発
生すると、幅圧下がそれ以上できなくなり、かつその後
の水平圧延でその座屈変形を修正する必要があった。
However, when a large width reduction is performed by the width reduction press, there is a problem that the slab buckles in the vertical direction during the reduction. When such buckling occurs, width reduction cannot be performed any more, and it is necessary to correct the buckling deformation in the subsequent horizontal rolling.

【0004】かかる問題点を解決するため、従来「熱間
スラブの幅圧下プレス方法及び装置」(特公平4−62
803号公報)、「幅圧下プレスの座屈防止装置」(特
開平1−317603号公報)、「スラブサイジングプ
レス装置」(特願平3−315040号公報)等が提案
されている。
In order to solve such a problem, a conventional method and apparatus for width reduction pressing of a hot slab (Japanese Patent Publication No. 4-62).
No. 803), "buckling prevention device for width reduction press" (JP-A-1-317603), and "slab sizing press device" (Japanese Patent Application No. 3-315040).

【0005】特公平4−62803号の方法は、「スラ
ブの搬送方向の少なくとも2ヶ所A,Bの位置に分離し
て定置された押圧手段」を備え、これにより金型による
幅圧下の際の座屈を防止するものであるが、押圧手段
(例えば押圧ローラ)の位置がスラブ搬送方向に定置さ
れているため、幅の狭いスラブの幅圧下には適合しても
幅の広い(例えば2000mm以上)スラブの幅圧下の際
には、中央部以外の座屈を防止できないという問題点が
あった。
The method of Japanese Examined Patent Publication No. 4-62803 is provided with "pressing means separated and fixed at at least two positions A and B in the conveying direction of the slab", whereby the width reduction by the mold is performed. Although it prevents buckling, since the position of the pressing means (for example, pressing roller) is fixed in the slab conveyance direction, it is wide (for example, 2000 mm or more) even if it is suitable for reducing the width of a narrow slab. ) When the width of the slab is reduced, there is a problem that buckling of parts other than the central part cannot be prevented.

【0006】スラブの座屈には図4の(a),(b),
(c)に例示するような座屈形態があり、座屈荷重は
(a)が最も小さく、(c)が最も大きい、従来の幅圧
下プレス装置のように、幅圧下量が小さい場合(例えば
両側で350mm程度)には、(a)の形態の座屈が普通
であるため、スラブの中央部に押圧手段を備えることで
座屈を抑制することができた。しかし、スラブ幅が広
く、あるいは幅圧下量が大きくなると、幅圧下力も大き
くなり、図3(b),(c)の形態の座屈が生じるよう
になる。このため中央部の押圧手段ではかかる形態の座
屈をほとんど抑制することができなかった。
For buckling of the slab, (a), (b) of FIG.
There is a buckling mode as illustrated in (c), and the buckling load is the smallest in (a) and the largest in (c). Since the buckling in the form of (a) is common in both sides (about 350 mm), it was possible to suppress the buckling by providing a pressing means in the central part of the slab. However, when the slab width is wide or the width reduction amount is large, the width reduction force is also large, and the buckling of the forms shown in FIGS. 3B and 3C occurs. Therefore, the pressing means at the central portion could hardly suppress such buckling.

【0007】特開平1−31760号はかかる問題点を
示唆さえもしていない。すなわち、この発明による装置
は、スラブの搬送方向に「複数の押えロール」を備えた
にすぎず、上記座屈形態に対応することを意図したもの
ではない。
Japanese Unexamined Patent Publication No. 1-31760 does not even suggest such a problem. That is, the device according to the present invention is merely provided with "a plurality of pressing rolls" in the conveying direction of the slab, and is not intended to deal with the buckling mode.

【0008】特願平3−315040号の装置は、「主
押えロールの軸方向の両側に補助押えロールを備え」て
おり、上述した(b)または(c)の形態の座屈にある
程度対応することができる。しかし補助押えロールの幅
方向位置は固定されており、スラブ幅が変化する場合
に、幅方向の最適位置で座屈を抑制することはできなか
った。
The apparatus of Japanese Patent Application No. 3-315040 "provides auxiliary press rolls on both sides of the main press roll in the axial direction", and is capable of responding to the buckling of the form (b) or (c) described above to some extent. can do. However, since the position of the auxiliary presser roll in the width direction is fixed, when the slab width changes, buckling cannot be suppressed at the optimum position in the width direction.

【0009】スラブ材は通常5〜10m程度の長さであ
り、先端部と後端部があるが、この両端部は幅圧下力に
対して座屈しやすい。このため、両端部の幅圧下には特
別の注意を払って作業を行う必要があった。
The slab material is usually about 5 to 10 m long and has a front end portion and a rear end portion, but both end portions thereof are likely to buckle against the width reduction force. For this reason, it is necessary to pay special attention to the reduction of the width of both ends.

【0010】本発明は上述の問題点に鑑みてなされたも
ので、スラブの幅が広く、かつ幅圧下量が大きい場合で
も座屈を防止でき、かつ先後端における座屈を防止する
ことのできる幅圧下プレス装置を提供することを目的と
する。
The present invention has been made in view of the above problems, and can prevent buckling even when the width of the slab is wide and the width reduction amount is large, and can prevent buckling at the front and rear ends. An object of the present invention is to provide a width reduction press device.

【0011】[0011]

【課題を解決するための手段】上記目的を達成するた
め、本発明は幅圧下用金型によりスラブを幅方向に圧下
する幅圧下プレス装置において、前記幅圧下用金型の間
に設けられ、スラブの幅方向中央部を上下に挟む一対の
主押えロールと、前記幅圧下用金型の入側、出側の少な
くとも一方に設けられスラブの幅方向および搬送方向に
移動可能で、スラブ上方に設けられた上部押えロール
と、前記幅圧下金型の入側、出側の少なくとも一方に設
けられ、スラブの幅方向および搬送方向に移動可能で、
スラブの下方に設けられた下部押えロールとを備えたも
のである。
In order to achieve the above-mentioned object, the present invention is a width reduction press device for reducing a slab in a width direction by a width reduction mold, and is provided between the width reduction molds. A pair of main pressing rolls sandwiching a widthwise central portion of the slab vertically, and provided on at least one of the inlet side and the outlet side of the width reduction mold, movable in the width direction and the conveying direction of the slab, and above the slab. Provided on at least one of the upper pressing roll provided and the inlet side and the outlet side of the width reduction mold, which is movable in the width direction and the conveying direction of the slab,
And a lower presser roll provided below the slab.

【0012】また、スラブ先端または後端のプレス実施
時に、スラブ端部のプレスに応じて、前記上部押えロー
ルおよび前記下部押えロールをスラブ端部に対応して移
動させるようにしたものである。
Further, when the front end or the rear end of the slab is pressed, the upper pressing roll and the lower pressing roll are moved corresponding to the slab end according to the pressing of the slab end.

【0013】[0013]

【作用】上記本発明の構成により、スラブ幅方向中央部
に設けられたスラブを挟む一対の主押えロールによって
図4(a)に示す座屈形態を抑制することができる。
(b)、(c)に示す座屈形態の場合、スラブ幅によっ
てその発生位置が変化するが上部押えロール、下部押え
ロールはそれぞれ複数であり、かつ独立にスラブ幅方向
に移動できるのでスラブ幅に応じ(b),(c)の座屈
形態も抑制することができる。
With the above-described structure of the present invention, the buckling mode shown in FIG. 4A can be suppressed by the pair of main pressing rolls sandwiching the slab provided at the central portion in the slab width direction.
In the case of the buckling mode shown in (b) and (c), the generation position changes depending on the slab width, but there are a plurality of upper press rolls and lower press rolls, and the slab width can be moved independently. Accordingly, the buckling modes of (b) and (c) can be suppressed.

【0014】またスラブ先端、または後端のスラブ端部
を幅圧下する場合、上部押えロール、下部押えロールを
スラブ先端または後端に移動させると共に幅方向も移動
させ図4(a),(b),(c)の全ての形態の端部座
屈を抑制することができる。
Further, when the slab front end or the rear end slab end is subjected to width reduction, the upper press roll and the lower press roll are moved to the slab front end or rear end and also in the width direction as shown in FIGS. ) And (c), it is possible to suppress end buckling.

【0015】[0015]

【実施例】以下、本発明の実施例を図面を参照して説明
する。図1は本発明の実施例の幅圧下プレス装置を示
し、(a)は平面図、(b)は側面図を示す。図2
(a)は図1(b)のX−X矢視図を示し、図2(b)
は図1(b)のY−Y矢視図を示す。本実施例の幅圧下
プレス装置は、スラブ1を幅方向に圧下する一対の幅圧
下用金型2と、この幅圧下用金型2の間でスラブ1の幅
方向中央部に設けられた上下一対の主押えロール10
と、幅圧下用金型2の入側に設けられた2個の上部押え
ロール12と、幅圧下用金型2の入側に設けられた3個
の下部押えロール15とを備えている。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a width reduction pressing apparatus according to an embodiment of the present invention, (a) is a plan view and (b) is a side view. Figure 2
(A) shows the XX arrow line view of FIG.1 (b), FIG.2 (b)
Shows the YY arrow view of FIG. The width reduction press device of the present embodiment includes a pair of width reduction dies 2 for reducing the slab 1 in the width direction, and a top and bottom provided in the width direction central portion of the slab 1 between the width reduction dies 2. A pair of main presser rolls 10
And two upper pressing rolls 12 provided on the entrance side of the width reduction mold 2 and three lower pressing rolls 15 provided on the entrance side of the width reduction mold 2.

【0016】主押えロール10はスラブ1の幅方向中央
部を上下一対となって挟むようになっており、図4に示
す(a)の座屈形態を有効に抑制する。スラブ1への押
圧力は垂直に動作する液圧シリンダ11によって行わ
れ、この液圧を制御することにより押圧力を調整する。
主押えロール10は図3に示すように支点10aを中心
に押え位置(実線)と離脱位置(破線位置)を揺動可能
に構成されており、必要に応じ、離脱位置に退避するこ
とができる。
The main pressing roll 10 sandwiches the widthwise central portion of the slab 1 in a pair in the upper and lower directions, and effectively suppresses the buckling mode of (a) shown in FIG. The pressing force on the slab 1 is performed by the hydraulic cylinder 11 that operates vertically, and the pressing force is adjusted by controlling the hydraulic pressure.
As shown in FIG. 3, the main presser roll 10 is configured to be swingable between a presser position (solid line) and a disengagement position (broken line position) around a fulcrum 10a, and can be retracted to the disengagement position as needed. .

【0017】上部押えロール12は垂直な液圧シリンダ
13で押圧力を発生する。上部押えロール12と液圧シ
リンダ13は搬送部14に格納され、搬送部14は横行
枠18上をスラブ幅方向に移動可能に構成される。横行
枠18には横行シリンダ20が設けられ搬送部14を横
行させる。横行枠18は縦行枠19上をスラブ搬送方向
に移動可能に構成され、縦行枠19に設けられた縦行シ
リンダ21によってスラブ搬送方向に移動する。
The upper pressing roll 12 generates a pressing force by a vertical hydraulic cylinder 13. The upper pressing roll 12 and the hydraulic cylinder 13 are housed in the transport unit 14, and the transport unit 14 is configured to be movable on the transverse frame 18 in the slab width direction. A traverse cylinder 20 is provided in the traverse frame 18 to traverse the transport unit 14. The horizontal frame 18 is configured to be movable on the vertical frame 19 in the slab transport direction, and is moved in the slab transport direction by a vertical cylinder 21 provided on the vertical frame 19.

【0018】下部押えロール15は垂直な液圧シリンダ
16で押圧力を発生する。下部押圧手段15と液圧シリ
ンダ16は搬送部17に格納される。その他の構成は上
部押えロール12の場合と同様で、搬送部17が横行シ
リンダ20により横行枠18上を横行し、横行枠18が
縦行シリンダ21により縦行枠19上をスラブ搬送方向
に移動する。ただし、下部押えロール15は3個からな
り中央の下部押えロール15は横行枠18の中央部に固
定され横行方向には移動しない。
The lower pressing roll 15 generates a pressing force by a vertical hydraulic cylinder 16. The lower pressing means 15 and the hydraulic cylinder 16 are stored in the transport unit 17. Other configurations are the same as in the case of the upper press roll 12, the transport unit 17 traverses the traverse frame 18 by the traverse cylinder 20, and the traverse frame 18 moves in the slab transport direction by the traverse cylinder 21 on the traverse frame 19. To do. However, the lower pressing roll 15 is composed of three pieces, and the central lower pressing roll 15 is fixed to the central portion of the transverse frame 18 and does not move in the transverse direction.

【0019】上部押えロール12、下部押えロール15
も図3に示すように支点12a,15aを中心に押さえ
位置(実線)と離脱位置(破線位置)を揺動可能に構成
されており、必要に応じて離脱位置に退避することがで
きる。
Upper press roll 12, lower press roll 15
3, the pressing position (solid line) and the disengagement position (broken line position) are swingable around the fulcrums 12a and 15a as shown in FIG.

【0020】上部押えロール12、下部押えロール15
は横行シリンダ20を動作させることによりスラブ幅方
向の任意の位置に移動することができ、図4に示す
(b),(c)の座屈形態を有効に抑制する。下部押え
ロール15の中央部のロール15は移動しないが(c)
の座屈形態に対しては有効に働く。
Upper pressing roll 12 and lower pressing roll 15
Can be moved to an arbitrary position in the slab width direction by operating the traverse cylinder 20, and effectively suppresses the buckling modes of (b) and (c) shown in FIG. Although the central roll 15 of the lower presser roll 15 does not move (c)
It works effectively for the buckling form of.

【0021】幅圧下がスラブ1の後端に近づいたとき
は、スラブ後端の移動位置に合わせ、上部押えロール1
2、下部押えロール15の位置を後端に発生する座屈を
抑制できる位置に横行シリンダ20、縦行シリンダ21
を動作させて移動させ、スラブ後端における座屈の発生
を防止する。
When the width reduction approaches the rear end of the slab 1, the upper pressing roll 1 is aligned with the moving position of the rear end of the slab.
2. The traverse cylinder 20 and the traverse cylinder 21 are positioned so that the buckling generated at the rear end of the lower presser roll 15 can be suppressed.
To prevent the buckling at the rear end of the slab.

【0022】本実施例は幅圧下用金型2の入側にのみ上
部押えロール12と下部押えロール15を設けたが、出
側にも設けることによりスラブ先端の座屈を有効に抑制
することができる。
In this embodiment, the upper pressing roll 12 and the lower pressing roll 15 are provided only on the entrance side of the width reduction mold 2, but the buckling of the tip of the slab can be effectively suppressed by providing it on the exit side. You can

【0023】[0023]

【発明の効果】以上の説明より明らかなように、本発明
は幅圧下金型の間でスラブ幅中央にスラブを挟む上下一
対の主押えロールを設け、幅圧下用金型の入側、出側の
少なくとも一方には複数の上部押えロールと複数の下部
押えロールを設け、スラブ幅方向のみならず搬送方向に
も移動可能にしているので、スラブの先端から後端に到
るスラブ全長において発生する幅圧下による座屈を抑制
することができる。また上部押えロール、下部押えロー
ルは共にスラブ幅方向に移動可能なので、スラブの幅が
変化しても座屈を有効に抑制することができる。
As is apparent from the above description, according to the present invention, a pair of upper and lower main pressing rolls sandwiching the slab is provided in the center of the slab width between the width reduction dies, and the width reduction dies have an inlet side and an outlet side. At least one side is provided with a plurality of upper pressing rolls and a plurality of lower pressing rolls, and it is possible to move not only in the slab width direction but also in the conveying direction. Buckling due to width reduction can be suppressed. Further, since both the upper press roll and the lower press roll can move in the slab width direction, buckling can be effectively suppressed even if the width of the slab changes.

【図面の簡単な説明】[Brief description of drawings]

【図1】本実施例の幅圧下プレス装置の平面図と側面図
を示す。
FIG. 1 shows a plan view and a side view of a width reduction pressing device of the present embodiment.

【図2】図1(b)のX−X矢視図およびY−Y矢視図
を示す。
FIG. 2 shows an XX arrow view and an YY arrow view of FIG.

【図3】主押えロール、上部押えロール、下部押えロー
ルの離脱位置を説明する図である。
FIG. 3 is a diagram for explaining a separation position of a main pressing roll, an upper pressing roll, and a lower pressing roll.

【図4】幅圧下プレスによって発生する座屈形態を説明
する図である。
FIG. 4 is a diagram illustrating a buckling mode generated by a width reduction press.

【符号の説明】[Explanation of symbols]

1 スラブ 2 幅圧下用金型 10 主押えロール 12 上部押えロール 15 下部押えロール 14,17 搬送部 18 横行枠 19 縦行枠 20 横行シリンダ 21 縦行シリンダ 1 Slab 2 Width reduction die 10 Main pressing roll 12 Upper pressing roll 15 Lower pressing roll 14, 17 Transport section 18 Traverse frame 19 Vertical frame 20 Traverse cylinder 21 Traverse cylinder

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 幅圧下用金型によりスラブを幅方向に圧
下する幅圧下プレス装置において、前記幅圧下用金型の
間に設けられ、スラブの幅方向中央部を上下に挟む一対
の主押えロールと、前記幅圧下用金型の入側、出側の少
なくとも一方に設けられスラブの幅方向および搬送方向
に移動可能で、スラブ上方に設けられた上部押えロール
と、前記幅圧下金型の入側、出側の少なくとも一方に設
けられ、スラブの幅方向および搬送方向に移動可能で、
スラブの下方に設けられた下部押えロールとを備えたこ
とを特徴とする幅圧下プレス装置。
1. A width reduction press device for reducing a slab in a width direction by a width reduction mold, wherein a pair of main pressers is provided between the width reduction molds and vertically sandwiches a widthwise central portion of the slab. The roll, the upper side pressing roll provided on at least one of the inlet side and the outlet side of the width reduction mold and movable in the width direction and the conveyance direction of the slab, and the upper pressing roll provided above the slab, and the width reduction mold It is provided on at least one of the inlet side and the outlet side, and is movable in the width direction of the slab and the conveying direction,
A width reduction press device comprising: a lower presser roll provided below the slab.
【請求項2】 スラブ先端または後端のプレス実施時
に、スラブ端部のプレスに応じて、前記上部押えロール
および前記下部押えロールをスラブ端部に対応して移動
させるようにしたことを特徴とする請求項1記載の幅圧
下プレス装置。
2. When the slab front end or the rear end is pressed, the upper pressing roll and the lower pressing roll are moved in correspondence with the slab end according to the pressing of the slab end. The width reduction press device according to claim 1.
JP04420493A 1993-03-05 1993-03-05 Width reduction press Expired - Lifetime JP3189919B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04420493A JP3189919B2 (en) 1993-03-05 1993-03-05 Width reduction press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04420493A JP3189919B2 (en) 1993-03-05 1993-03-05 Width reduction press

Publications (2)

Publication Number Publication Date
JPH06254606A true JPH06254606A (en) 1994-09-13
JP3189919B2 JP3189919B2 (en) 2001-07-16

Family

ID=12685038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04420493A Expired - Lifetime JP3189919B2 (en) 1993-03-05 1993-03-05 Width reduction press

Country Status (1)

Country Link
JP (1) JP3189919B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703013A3 (en) * 1994-09-14 1996-08-07 Hitachi Ltd Widthwise-compressing machine and rolling mill provided with the same machine
CN111434399A (en) * 2019-01-14 2020-07-21 宝山钢铁股份有限公司 Method and device for controlling temperature drop of upper and lower corners of plate blank

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703013A3 (en) * 1994-09-14 1996-08-07 Hitachi Ltd Widthwise-compressing machine and rolling mill provided with the same machine
US5699693A (en) * 1994-09-14 1997-12-23 Hitachi, Ltd. Widthwise compressing machine and method using vibrations to reduce material width
CN111434399A (en) * 2019-01-14 2020-07-21 宝山钢铁股份有限公司 Method and device for controlling temperature drop of upper and lower corners of plate blank
CN111434399B (en) * 2019-01-14 2022-03-18 宝山钢铁股份有限公司 Method and device for controlling temperature drop of upper and lower corners of plate blank

Also Published As

Publication number Publication date
JP3189919B2 (en) 2001-07-16

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