JPH06304601A - Method and device for suppressing camber at time of edging press - Google Patents
Method and device for suppressing camber at time of edging pressInfo
- Publication number
- JPH06304601A JPH06304601A JP5120579A JP12057993A JPH06304601A JP H06304601 A JPH06304601 A JP H06304601A JP 5120579 A JP5120579 A JP 5120579A JP 12057993 A JP12057993 A JP 12057993A JP H06304601 A JPH06304601 A JP H06304601A
- Authority
- JP
- Japan
- Prior art keywords
- width
- slab
- camber
- temperature
- hot slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Forging (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、熱間スラブ等の鋼材
を幅圧下プレス装置により連続的に全長に亘って幅圧下
するに際し、スラブに発生するスラブ搬送ラインの側方
に湾曲する曲り（以下キャンバーという）の抑制方法お
よび装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending of a steel material such as a hot slab which is curved to the side of a slab transfer line generated in a slab when the material is continuously width-reduced by a width-reduction pressing device over its entire length. (Hereinafter referred to as camber) suppression method and device.
【０００２】[0002]
【従来の技術】連続鋳造等により製造された高温のスラ
ブは、幅圧下プレスによりスラブ幅全長に亘って連続的
に幅圧下すると、キャンバーが生じることがある。この
原因としては、プレス側ならびにスラブ側共に種々考え
られるが、まずプレス側では、左右のプレス金型の位置
のずれ、左右のプレス金型の面粗度の違い、ピンチロー
ルとスラブ間の滑り等がある。スラブ側では、スラブ幅
方向の温度差、温度分布、プレス前のスラブ形状の影響
などが考えられる。2. Description of the Related Art A high temperature slab produced by continuous casting or the like may have a camber when continuously width-reduced over the entire length of the slab by a width-reduction press. There are various possible causes for this on both the press side and the slab side. First, on the press side, the displacement of the left and right press dies, the difference in the surface roughness of the left and right press dies, and the slip between the pinch roll and the slab are considered. Etc. On the slab side, the temperature difference in the slab width direction, the temperature distribution, and the influence of the slab shape before pressing are considered.
【０００３】上記スラブ幅方向の温度不均一に起因する
キャンバーの発生は、図２に示すとおり、スラブ５１の
側面５２に対し平行な幅圧下面５３、５４および該幅圧
下面５３、５４から搬送ラインＳ方向上流側へ向けて広
がる傾斜面５５、５６を有し、かつスラブ５１の搬送ラ
インＳを中心に対向配置した互いに近接、離反可能な一
対の左右金型５７、５８によって、高温（温度の変化に
伴い耐力変化の大きい範囲、例えば１０００〜１２００
℃の範囲）のスラブ５１をその全長に亘って順次幅圧下
するに際し、例えばスラブ５１の一方の幅方向端部５９
近傍が温度ｔ1、他方の幅方向端部６０近傍が温度ｔ2、
ただしｔ1＞ｔ2で、スラブ５１の幅方向における温度分
布が、図３に示すとおり、幅方向端部６０側から幅方向
端部５９側に向かって温度が徐々に高くなる状態である
と、スラブ５１の耐力は、幅方向端部５９側の方が幅方
向端部６０側より小さくなっている。As shown in FIG. 2, the camber caused by the temperature nonuniformity in the slab width direction is conveyed from the width pressure lower surfaces 53 and 54 parallel to the side surface 52 of the slab 51 and the width pressure lower surfaces 53 and 54. High temperature (temperature) Range with a large change in yield strength, for example, 1000 to 1200
When the slab 51 in the temperature range (° C.) is sequentially width-reduced over its entire length, for example, one widthwise end portion 59 of the slab 51 is used.
The vicinity is the temperature t 1 , the vicinity of the other widthwise end portion 60 is the temperature t 2 ,
However, when t 1 > t 2 , the temperature distribution in the width direction of the slab 51 is such that the temperature gradually increases from the width direction end portion 60 side toward the width direction end portion 59 side, as shown in FIG. 3. The yield strength of the slab 51 is smaller on the widthwise end portion 59 side than on the widthwise end portion 60 side.
【０００４】このため、スラブの幅方向中心線Ｘ0に対
して左右の温度分布が不均一なスラブ５１は、全長に亘
って前記一対の左右金型５７、５８によって幅圧下前の
幅寸法Ｗ0から所定の幅寸法Ｗ1に順次幅圧下すると、ス
ラブ５１の各幅方向端部５９、６０側で耐力が異なるた
め、本来ならば同じであるはずの左右幅方向端部５９、
６０の幅圧下量に差が生じ、幅方向端部５９の幅圧下量
λ1が幅方向端部６０の幅圧下量λ2よりも大きくなる。
このため、スラブ５１は、全体的に金型５７側へ押し出
され、スラブ５１の幅圧下された部分のスラブ幅方向中
心線Ｘ1は、幅圧下前のスラブ幅方向中心線Ｘ0よりも前
記幅圧下量λ1とλ2の差の半分値であるｅだけ金型５７
側へ偏位すると共に、幅方向端部５９の搬送ラインＳ方
向の伸びが幅方向端部６０の搬送ラインＳ方向の伸びよ
りも大きくなるため、その差が曲げ力としてスラブ５１
に作用することとなり、スラブ５１に金型５８を支点と
してスラブ５１先端部が金型５８側へ湾曲するキャンバ
ーが生じる。Therefore, in the slab 51 in which the temperature distribution on the left and right with respect to the center line X 0 in the width direction of the slab is not uniform, the width dimension W before the width reduction by the pair of left and right molds 57, 58 is performed. When the width is sequentially reduced from 0 to a predetermined width W 1 , the lateral strength end portions 59, 60 of the slab 51 have different proof stresses.
A difference occurs in the width reduction amount of 60, and the width reduction amount λ 1 of the width direction end portion 59 becomes larger than the width reduction amount λ 2 of the width direction end portion 60.
Therefore, the slab 51 is extruded toward the mold 57 as a whole, and the slab width direction center line X 1 of the slab 51 whose width is reduced is more than the slab width direction center line X 0 before the width reduction. The die 57 is reduced by e, which is half the difference between the width reduction amounts λ 1 and λ 2.
As the width direction end portion 59 extends in the conveying line S direction more than the width direction end portion 60 in the conveying line S direction, the difference between them is the bending force of the slab 51.
As a result, a camber is formed on the slab 51 in which the tip of the slab 51 curves toward the die 58 with the die 58 serving as a fulcrum.
【０００５】従来、スラブに生じるキャンバーを抑制す
る方法としては、プレス出側に付設されたキャンバー検
出器によりプレス中の熱間スラブのキャンバーを測定
し、前記測定値に基づき熱間スラブのプレス出側のピン
チロールを回動し、前記ピンチロールの上下ローラー軸
心を水平面内でスラブ送出方向に対し傾斜させ、プレス
施工中に発生する熱間スラブのキャンバーを矯正する方
法（特開昭６１−２２２６０２号公報）、被幅圧下材料
のキャンバー量を検出し、該キャンバー量に基づいて幅
プレス装置の左右金型の少なくとも一方を被幅圧下材料
の通過ライン方向に移動させて該左右金型の荷重点を変
え出側のキャンバーを修正しながら幅圧下する方法（特
開昭６２−１９２２２２号公報）、スラブの左右両端方
向端部の幅圧縮量を検出し、該幅圧縮量に基づいてスラ
ブの端面に対し平行な幅圧下面および該幅圧下面から搬
送ライン方向上流側へ向けて広がる傾斜面を有する左右
一対の金型のうち少なくとも一方の金型を、該金型の傾
斜圧縮範囲全部が他方の金型の傾斜圧縮範囲の一部と対
向し、かつ他方の金型の幅圧下面の圧縮範囲が一方の金
型の幅圧下面の一部と対向する範囲内で搬送ライン方向
へ移動させ幅圧下を行う方法（特開平３−２９７５０１
号公報）が提案されている。Conventionally, as a method of suppressing the camber generated in the slab, the camber of the hot slab during pressing is measured by a camber detector attached to the press exit side, and the hot slab is pressed out based on the measured value. Side pinch roll is rotated to incline the upper and lower roller axes of the pinch roll in the horizontal plane with respect to the slab delivery direction to correct the camber of the hot slab that occurs during press working (JP-A-61- 222622), the camber amount of the material to be width-reduced is detected, and at least one of the left and right dies of the width press device is moved in the passage line direction of the material to be width-reduced based on the amount of the camber. A method of changing the load point and correcting the camber on the outlet side to reduce the width (Japanese Patent Laid-Open No. 62-192222), the width compression amount of the left and right ends of the slab is adjusted. And at least one of a pair of left and right molds having a width pressure lower surface parallel to the end surface of the slab based on the width compression amount and an inclined surface spreading from the width pressure lower surface toward the upstream side in the transport line direction. The entire tilt compression range of the mold faces a part of the tilt compression range of the other mold, and the compression range of the width compression lower surface of the other mold is a part of the width compression lower surface of one mold. A method of performing width reduction by moving in the conveying line direction within a range opposed to (Japanese Patent Laid-Open No. 3-297501).
Issue).
【０００６】[0006]
【発明が解決しようとする課題】上記特開昭６１−２２
２６０２号公報および特開昭６２−１９２２２２号公報
に開示の方法は、いずれも発生したキャンバー量または
幅圧縮量を検出し、スラブに直接接触する幅プレス装置
本体または付属装置の位置または方向を変更し、キャン
バーを修正しながら幅圧下するものであって、キャンバ
ーの発生原因そのものを解消するものではない。また、
特開平３−２９７５０１号公報に開示の方法は、スラブ
の幅端位置検出信号に基づいて少なくとも一方の金型の
搬送ライン方向への移動量を演算し、搬送ライン方向へ
移動させるため、既設設備の大幅な改造を必要とする。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The methods disclosed in Japanese Laid-Open Patent Publication No. 2602 and Japanese Patent Laid-Open No. 62-192222 detect the amount of camber or width compression that has occurred, and change the position or direction of the width press device main body or auxiliary device that directly contacts the slab. However, the width reduction is performed while correcting the camber, and the cause itself of the camber is not eliminated. Also,
The method disclosed in Japanese Patent Laid-Open No. 3-297501 calculates the amount of movement of at least one mold in the transfer line direction based on the slab width end position detection signal, and moves it in the transfer line direction. Requires major remodeling.
【０００７】この発明の目的は、スラブ幅方向の温度分
布の不均一に起因するキャンバーの発生原因そのものを
解消し、特別なキャンバー修正装置によるキャンバーの
修正を必要としない、幅圧下プレス時のキャンバー抑制
方法および装置を提供することにある。An object of the present invention is to eliminate the cause itself of the occurrence of camber due to the nonuniform temperature distribution in the width direction of the slab, and to eliminate the need for a special camber correction device to correct the camber. An object is to provide a suppression method and device.
【０００８】[0008]
【課題を解決するための手段】本発明者らは、上記目的
を達成すべく鋭意試験検討を重ねた。その結果、スラブ
幅方向の温度分布の不均一に起因するキャンバーの発生
は、スラブ幅方向の温度分布の不均一を解消することに
よって防止できること、スラブ幅方向の温度分布の不均
一は、スラブ幅方向両端部の温度を測定し、該温度差に
基づいて幅プレス装置の前方上下部および側部に設置し
たノズルからスラブの幅方向端部に水噴霧すれば、スラ
ブ幅方向両端部の温度を均一化できるとの結論に至り、
この発明に到達した。[Means for Solving the Problems] The inventors of the present invention have made extensive studies in order to achieve the above object. As a result, the occurrence of camber due to the uneven temperature distribution in the slab width direction can be prevented by eliminating the uneven temperature distribution in the slab width direction. Measure the temperature at both ends in the direction, and if water is sprayed on the widthwise ends of the slab from the nozzles installed at the front upper and lower parts and side parts of the width press device based on the temperature difference, the temperature at both ends of the slab widthwise can be measured. I came to the conclusion that it can be made uniform,
This invention was reached.
【０００９】すなわちこの発明は、熱間スラブを幅圧下
プレス装置により連続的に全長に亘って幅圧下する際発
生する熱間スラブのキャンバーを抑制する方法におい
て、熱間スラブの幅方向の温度を測定し、該測定値から
求めた熱間スラブの幅方向温度差に基づいて幅圧下プレ
ス装置の前方に設けた噴霧ノズルから熱間スラブに冷媒
を噴霧し、熱間スラブの幅方向温度差を解消することを
特徴とする幅圧下プレス時のキャンバー抑制方法であ
る。That is, the present invention relates to a method of suppressing the camber of a hot slab that occurs when the hot slab is continuously width-reduced by a width reduction press device over the entire length thereof. Measured, spraying the refrigerant to the hot slab from the spray nozzle provided in front of the width reduction press device based on the width direction temperature difference of the hot slab obtained from the measured value, the width direction temperature difference of the hot slab A method for suppressing camber at the time of width reduction pressing, which is characterized in that it is solved.
【００１０】また、熱間スラブを連続的に全長に亘って
幅圧下する幅圧下プレス装置において、プレス装置の前
方上方に設置した熱間スラブの幅方向の温度を測定する
温度検出器と、プレス装置の前方両側上下部および側部
に配設した冷媒噴霧ノズルと、前記温度検出器からの出
力に基づいて冷媒を噴霧する冷媒噴霧ノズルと冷媒噴霧
量を決定し、該決定した冷媒噴霧ノズルから所定量の冷
媒を噴霧させる温度制御部とからなる幅圧下プレス時の
キャンバー抑制装置である。Further, in a width reduction press device for continuously width reducing the hot slab over its entire length, a temperature detector for measuring the temperature in the width direction of the hot slab installed in front of and above the press device, and a press Refrigerant spray nozzles disposed on the upper and lower sides and side parts on the front side of the device, determine a refrigerant spray nozzle and a refrigerant spray amount for spraying the refrigerant based on the output from the temperature detector, and from the determined refrigerant spray nozzle It is a camber suppressing device at the time of width reduction pressing, which comprises a temperature control unit for spraying a predetermined amount of refrigerant.
【００１１】[0011]
【作用】この発明方法においては、熱間スラブの幅方向
の温度を測定し、該測定値から求めた熱間スラブの幅方
向温度差に基づいて幅圧下プレス装置の前方に設けた噴
霧ノズルから熱間スラブに冷媒を噴霧し、熱間スラブの
幅方向温度差を解消するから、熱間スラブの幅方向温度
差に起因するスラブ耐力の不均一が均一化され、幅方向
両端の幅圧下量が等しくなるから、幅方向両端の搬送ラ
イン方向への伸びも等しくなり、キャンバーの発生を防
止することができる。In the method of the present invention, the temperature in the width direction of the hot slab is measured, and based on the temperature difference in the width direction of the hot slab obtained from the measured value, a spray nozzle provided in front of the width reduction press device is used. By spraying the refrigerant on the hot slab and eliminating the temperature difference in the width direction of the hot slab, the unevenness of the slab proof strength caused by the temperature difference in the width direction of the hot slab is made uniform, and the width reduction amount at both ends in the width direction is reduced. Are equal to each other, the two ends in the width direction are also equalized in the direction of the transport line, and the camber can be prevented.
【００１２】また、この発明装置においては、プレス装
置の前方上方に設置した温度検出器により熱間スラブの
幅方向の温度が測定され、前記温度検出器により測定さ
れた熱間スラブの幅方向温度分布に基づいて温度制御部
は、プレス装置の前方両側上下部および側部に配設した
冷媒噴霧ノズルのうち、噴霧する冷媒噴霧ノズルと冷媒
噴霧量を演算決定し、該決定した冷媒噴霧ノズルから所
定量の冷媒を噴霧させるから、熱間スラブの幅方向温度
差を解消することができる。Further, in the apparatus of the present invention, the temperature in the width direction of the hot slab is measured by the temperature detector installed in the upper front part of the pressing device, and the temperature in the width direction of the hot slab is measured by the temperature detector. Based on the distribution, the temperature control unit calculates and determines the refrigerant spray nozzle and the refrigerant spray amount to be sprayed from among the refrigerant spray nozzles arranged on the upper and lower sides of the front side of the press device and on the side, and from the determined refrigerant spray nozzle. Since a predetermined amount of refrigerant is sprayed, the temperature difference in the width direction of the hot slab can be eliminated.
【００１３】[0013]
実施例１ 以下にこの発明の詳細を実施の一例を示す図１に基づい
て説明する。図１はこの発明方法を実施する幅圧下プレ
スにおけるキャンバー抑制装置の一例を示す全体斜視説
明図である。図１において、１は幅圧下する熱間スラ
ブ、２、３は熱間スラブ１の搬送ラインＳを挟んで熱間
スラブ１幅方向に互いに近接、離反可能に配設された一
対の金型ホルダー４、５のスラブ１対峙面に取付けた金
型で、スラブ１の側面６、７に対し平行な幅圧下面８、
９および該幅圧下面８、９から搬送ラインＳ方向上流側
へ向かって拡開する傾斜面１０、１１を有している。１
２、１３は金型２から搬送ラインＳ方向上流側に配設し
た水噴射用ノズルで、水配管１４と開閉制御弁１５およ
び流量検出器１６を介して連結されている。１７、１８
は金型３から搬送ラインＳ方向上流側に配設した水噴射
用ノズルで、同様に水配管１９と開閉制御弁２０および
流量検出器２１を介して連結されている。Embodiment 1 Details of the present invention will be described below with reference to FIG. 1 showing an embodiment. FIG. 1 is an overall perspective explanatory view showing an example of a camber suppressing device in a width reduction press for carrying out the method of the present invention. In FIG. 1, reference numeral 1 is a hot slab for width reduction, and 2 and 3 are a pair of mold holders arranged so as to be close to and away from each other in the width direction of the hot slab 1 with a transport line S of the hot slab 1 interposed therebetween. A die attached to the surface of the slab 1 facing the slabs 4 and 5, and a width pressure lower surface 8 parallel to the side surfaces 6 and 7 of the slab 1,
9 and sloped surfaces 10 and 11 that expand from the width pressure lower surfaces 8 and 9 toward the upstream side in the transport line S direction. 1
Reference numerals 2 and 13 denote water injection nozzles arranged on the upstream side of the mold 2 in the transport line S direction, and are connected to each other via a water pipe 14, an opening / closing control valve 15, and a flow rate detector 16. 17, 18
Is a water jet nozzle arranged upstream from the mold 3 in the transport line S direction, and is similarly connected to the water pipe 19 via the opening / closing control valve 20 and the flow rate detector 21.
【００１４】２２は液体噴射用ノズル１２、１３、１
７、１８から噴射された水と干渉しない位置に設けた温
度検出器で、熱間スラブ１の両幅方向端部の温度を測定
し、温度制御部２３に出力する。また、温度制御部２３
には、前記流量検出器１６、２１で検出された水噴射用
ノズル１２、１３ならびに水噴射用ノズル１７、１８か
らの水噴射量が入力される。さらに温度制御部２３に
は、図示しない上位コンピータから熱間スラブ１の幅、
板厚が入力されると共に、熱間スラブ１の両幅方向端部
の温度差を零とするための温度差と水噴霧量との関係が
予め入力設定されている。温度制御部２３は、温度検出
器２２から入力される熱間スラブ１の両幅方向端部の温
度測定結果と、図示しない上位コンピータから入力され
る熱間スラブ１の幅、板厚ならびに予め設定されている
温度差を零とするための温度差と水噴霧量との関係に基
づいて、使用する水噴射用ノズル、例えば水噴射用ノズ
ル１７、１８と水噴霧量を演算決定し、開閉制御弁２０
を開放して水噴射用ノズル１７、１８から水を噴霧する
と共に、流量検出器２１から入力される水噴霧量が演算
決定した水噴霧量となるよう開閉制御弁２０の開度を制
御するよう構成する。Reference numeral 22 is a liquid jet nozzle 12, 13, 1
A temperature detector provided at a position where it does not interfere with water sprayed from 7, 18 measures the temperature at both widthwise ends of the hot slab 1 and outputs it to the temperature control unit 23. In addition, the temperature control unit 23
The water injection amounts from the water injection nozzles 12 and 13 and the water injection nozzles 17 and 18 detected by the flow rate detectors 16 and 21 are input to the. Further, the temperature control unit 23 includes a width of the hot slab 1 from an upper computer (not shown),
The plate thickness is input, and the relationship between the temperature difference and the water spray amount for making the temperature difference between the widthwise ends of the hot slab 1 zero is input and set in advance. The temperature control unit 23 measures the temperature of the widthwise ends of the hot slab 1 input from the temperature detector 22, and the width, plate thickness, and preset of the hot slab 1 input from a host computer (not shown). Based on the relationship between the temperature difference and the water spray amount for making the temperature difference zero, the water spray nozzle to be used, for example, the water spray nozzles 17 and 18 and the water spray amount are arithmetically determined, and the opening / closing control is performed. Valve 20
Is opened to spray water from the water injection nozzles 17 and 18, and the opening degree of the opening / closing control valve 20 is controlled so that the water spray amount input from the flow rate detector 21 becomes the calculated water spray amount. Constitute.
【００１５】上記のとおり構成したことによって、上流
より搬送されてきた熱間スラグ１は、温度検出器２２で
幅方向両端部の温度が測定され、温度制御部２３に入力
される。温度制御部２３は、温度検出器２２から入力さ
れる熱間スラグ１の幅方向両端部の測温結果に基づいて
その温度差を演算し、図示しない上位コンピータから入
力される熱間スラブ１の幅、板厚ならびに予め設定され
ている温度差を零とするための温度差と水噴霧量とに基
づいて、使用する水噴射用ノズル、例えば水噴射用ノズ
ル１７、１８と水噴霧量を演算決定し、開閉制御弁２０
を開放して水噴射用ノズル１７、１８から水を噴霧する
と共に、流量検出器２１から入力される水噴霧量が演算
決定した水噴霧量となるよう開閉制御弁２０の開度を制
御する。With the above-mentioned structure, the temperature of the hot slag 1 conveyed from the upstream side is measured at both ends in the width direction by the temperature detector 22, and the temperature is input to the temperature control unit 23. The temperature control unit 23 calculates the temperature difference based on the temperature measurement results of both ends in the width direction of the hot slag 1 input from the temperature detector 22, and calculates the temperature difference of the hot slab 1 input from a host computer (not shown). The water spray nozzles to be used, for example, the water spray nozzles 17 and 18 and the water spray amount are calculated based on the width, the plate thickness, and the temperature difference and the water spray amount for making the preset temperature difference zero. Open and close control valve 20
Is opened to spray water from the water injection nozzles 17 and 18, and the opening degree of the opening / closing control valve 20 is controlled so that the water spray amount input from the flow rate detector 21 becomes the calculated water spray amount.
【００１６】この結果、熱間スラグ１の幅方向温度差が
解消されて均一化するから、図示しないクランク軸等に
よって熱間スラグ１の幅方向に金型２、３を近接、離反
せしめ、熱間スラグ１を幅圧下する際の搬送ラインＳ方
向の両端伸びが均一化され、熱間スラグ１の幅方向温度
分布の不均一に起因するキャンバーの発生を未然に防止
することができる。また、本発明は、従来のように特別
なキャンバー修正装置により強制的にキャンバーを修正
するひつようがなく、スラブの上下面に傷が付くことも
ない。As a result, since the temperature difference in the width direction of the hot slag 1 is eliminated and uniformized, the molds 2 and 3 are moved close to and away from each other in the width direction of the hot slug 1 by a crank shaft (not shown) or the like. When both ends of the hot slag 1 are width-reduced, both end extensions in the conveying line S direction are made uniform, and it is possible to prevent the occurrence of camber due to the uneven temperature distribution in the width direction of the hot slag 1. Further, according to the present invention, there is no need to forcibly correct the camber with a special camber correcting device as in the conventional case, and the upper and lower surfaces of the slab are not scratched.
【００１７】実施例２ 前記実施例１に記載の幅圧下プレスにおけるキャンバー
抑制装置を使用する前後におけるキャンバー発生状況を
測定した。その結果、この発明の幅圧下プレスにおける
キャンバー抑制装置使用前は、３０回の幅圧下における
１０ｍ当たりの曲り量の平均値が１５０ｍｍであり、偏
差値が５０ｍｍであるのに対し、この発明の幅圧下プレ
スにおけるキャンバー抑制装置使用後は、３０回の幅圧
下における１０ｍ当たりの曲り量の平均値が８０ｍｍで
あり、偏差値が３５ｍｍで、キャンバーの発生は激減し
た。Example 2 The state of camber generation before and after using the camber suppressing device in the width reduction press described in Example 1 was measured. As a result, before using the camber suppressing device in the width reduction press of the present invention, the average value of the bending amount per 10 m under the width reduction of 30 times is 150 mm and the deviation value is 50 mm, whereas the width of the present invention is After using the camber suppressing device in the pressing press, the average value of the bending amount per 10 m under the width reduction of 30 times was 80 mm, the deviation value was 35 mm, and the occurrence of camber was drastically reduced.
【００１８】[0018]
【発明の効果】以上述べたとおり、この発明によれば、
熱間スラブの幅方向の温度不均一に起因するキャンバー
発生を、スラグ上下面に傷を付けることなく防止するこ
とができ、品質ならびに歩留を大幅に向上することがで
きる。As described above, according to the present invention,
It is possible to prevent the occurrence of camber due to the temperature nonuniformity in the width direction of the hot slab without damaging the upper and lower surfaces of the slag, and it is possible to significantly improve the quality and the yield.
【図１】この発明方法を実施する幅圧下プレスにおける
キャンバー抑制装置の一例を示す全体斜視説明図であ
る。FIG. 1 is an overall perspective explanatory view showing an example of a camber suppressing device in a width reduction press for carrying out the method of the present invention.
【図２】スラブ幅方向の温度分布の不均一に起因する幅
圧下時のスラブにキャンバーが生じる要因説明のための
平面図である。FIG. 2 is a plan view for explaining a cause of camber occurring in a slab during width reduction due to uneven temperature distribution in the slab width direction.
【図３】図２に示すスラブの幅方向における温度分布を
示すグラフである。FIG. 3 is a graph showing a temperature distribution in the width direction of the slab shown in FIG.
１ 熱間スラブ ２、３、５７、５８ 金型 ４、５ 金型ホルダー ６、７、５２ 側面 ８、９、５３、５４ 幅圧下面 １０、１１、５５、５６ 傾斜面 １２、１３、１７、１８ 水噴射用ノズル １４、１９ 水配管 １５、２０ 開閉制御弁 １６、２１ 流量検出器 ２２ 温度検出器 ２３ 温度制御部 ５１ スラブ ５９、６０ 幅方向端部 Ｓ 搬送ラインＳ λ1、λ2 幅圧下量 Ｘ0、Ｘ1 幅方向中心線 Ｗ0、Ｗ1 幅寸法1 Hot slab 2, 3, 57, 58 Mold 4, 5 Mold holder 6, 7, 52 Side surface 8, 9, 53, 54 Width pressure lower surface 10, 11, 55, 56 Inclined surface 12, 13, 17, 18 Water injection nozzle 14, 19 Water pipe 15, 20 Open / close control valve 16, 21 Flow rate detector 22 Temperature detector 23 Temperature control unit 51 Slab 59, 60 Width direction end S Transport line S λ 1 , λ 2 Width reduction Quantity X 0 , X 1 Width center line W 0 , W 1 Width dimension
Claims (2)
続的に全長に亘って幅圧下する際発生する熱間スラブの
キャンバーを抑制する方法において、熱間スラブの幅方
向の温度を測定し、該測定値から求めた熱間スラブの幅
方向温度差に基づいて幅圧下プレス装置の前方に設けた
噴霧ノズルから熱間スラブに冷媒を噴霧し、熱間スラブ
の幅方向温度差を解消することを特徴とする幅圧下プレ
ス時のキャンバー抑制方法。1. A method for suppressing the camber of a hot slab that occurs when the hot slab is width-reduced continuously over the entire length by a width reduction press device, in which the temperature in the width direction of the hot slab is measured, To spray the refrigerant on the hot slab from a spray nozzle provided in front of the width reduction press device based on the temperature difference in the width direction of the hot slab obtained from the measured value, and eliminate the temperature difference in the width direction of the hot slab. A method for suppressing camber during width reduction press.
下する幅圧下プレス装置において、プレス装置の前方に
上方に設置した熱間スラブの幅方向の温度を測定する温
度検出器と、プレス装置の前方両側上下部および側部に
配設した冷媒噴霧ノズルと、前記温度検出器からの出力
に基づいて冷媒を噴霧する冷媒噴霧ノズルと冷媒噴霧量
を決定し、該決定した冷媒噴霧ノズルから所定量の冷媒
を噴霧させる温度制御部とからなる幅圧下プレス時のキ
ャンバー抑制装置。2. In a width reduction press device for continuously width-reducing a hot slab over its entire length, a temperature detector installed in front of the press device to measure the temperature in the width direction of the hot slab, Refrigerant spray nozzles disposed on the upper and lower sides and side parts on the front side of the pressing device, a refrigerant spray nozzle that sprays the refrigerant based on the output from the temperature detector, and a refrigerant spray amount are determined, and the determined refrigerant spray nozzle A camber suppressing device at the time of width reduction pressing, which comprises a temperature control unit for spraying a predetermined amount of refrigerant from the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5120579A JPH06304601A (en) | 1993-04-23 | 1993-04-23 | Method and device for suppressing camber at time of edging press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5120579A JPH06304601A (en) | 1993-04-23 | 1993-04-23 | Method and device for suppressing camber at time of edging press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06304601A true JPH06304601A (en) | 1994-11-01 |
Family
ID=14789781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5120579A Pending JPH06304601A (en) | 1993-04-23 | 1993-04-23 | Method and device for suppressing camber at time of edging press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06304601A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100368217B1 (en) * | 1998-07-21 | 2003-03-17 | 주식회사 포스코 | A method for cooling accelerated cooling steel sheets having uniform mechanical properties along width direction |
| JP2008260027A (en) * | 2007-04-10 | 2008-10-30 | Nippon Steel Corp | Method for rolling width of steel slab |
-
1993
- 1993-04-23 JP JP5120579A patent/JPH06304601A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100368217B1 (en) * | 1998-07-21 | 2003-03-17 | 주식회사 포스코 | A method for cooling accelerated cooling steel sheets having uniform mechanical properties along width direction |
| JP2008260027A (en) * | 2007-04-10 | 2008-10-30 | Nippon Steel Corp | Method for rolling width of steel slab |
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