JPH0141401B2 - - Google Patents

Info

Publication number
JPH0141401B2
JPH0141401B2 JP57012047A JP1204782A JPH0141401B2 JP H0141401 B2 JPH0141401 B2 JP H0141401B2 JP 57012047 A JP57012047 A JP 57012047A JP 1204782 A JP1204782 A JP 1204782A JP H0141401 B2 JPH0141401 B2 JP H0141401B2
Authority
JP
Japan
Prior art keywords
bloom
roll
continuous casting
predetermined
irregularly shaped
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
Application number
JP57012047A
Other languages
Japanese (ja)
Other versions
JPS58128201A (en
Inventor
Akio Ichizawa
Takayuki Kudo
Kazumi Yusa
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP1204782A priority Critical patent/JPS58128201A/en
Publication of JPS58128201A publication Critical patent/JPS58128201A/en
Publication of JPH0141401B2 publication Critical patent/JPH0141401B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/026—Rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/06—Pushing or forcing work into pass

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

【発明の詳細な説明】 本考案は、連続鋳造ブルームの予成形方法およ
び装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous casting bloom preforming method and apparatus.

一般に、連続鋳造ブルームの熱間圧延では、成
品幅を確保するために行ういわゆる幅殺しにより
第１図Ａに示すように熱延成品Ｍの先端部および
後端部にフイツシユ・テールＦが成形される。 Generally, in hot rolling of continuously cast blooms, a so-called width killing process is performed to ensure the width of the product, so that fish tails F are formed at the leading and trailing ends of the hot-rolled product M, as shown in Figure 1A. Ru.

また、最近では連続鋳造を簡略化する目的でモ
ールド数を少なくしているために、前述の幅殺し
を強力に行うことが必要となる場合があり、フイ
ツシユ・テールＦはますます大きくなる傾向があ
る。このフイツシユ・テールＦは圧延後に切り捨
てられるので、歩留低下の最大の原因となつてい
る。 In addition, recently, the number of molds has been reduced in order to simplify continuous casting, so it may be necessary to perform the aforementioned width reduction forcefully, and the weight tail F tends to become larger and larger. be. Since this fish tail F is cut off after rolling, it is the biggest cause of a decrease in yield.

さらに、熱延成品Ｍの圧延では、第１図Ｂに示
すように、先端部および後端部の幅が中間部の幅
よりも小さくなる先後端部幅小化の問題が生じ、
これもまた歩留低下の大きな原因となつている。 Furthermore, in the rolling of the hot-rolled product M, as shown in FIG.
This is also a major cause of yield decline.

従来、フイツシユ・テールおよび幅小化の軽減
対策として、連続鋳造ブルームをプレスによつて
予成形する方法が提案されている。しかし、この
方法は予成形専用プレスを新たに設置する必要が
あり、設備費用が高額であり、据付工事も長期間
にわたり、また、スペースの制約等があり、実施
面では困難な問題が多い。 Conventionally, a method has been proposed in which a continuously cast bloom is preformed using a press as a measure to reduce the problem of fish tail and width reduction. However, this method requires the installation of a new press exclusively for preforming, and the equipment costs are high, installation work takes a long time, and there are space constraints, etc., and there are many problems in implementation.

したがつて、本発明の目的は、既存設備を利用
して連続鋳造ブルームを所定の形状に予成形し、
熱間圧延のさいに生じるフイツシユ・テールおよ
び先後端部幅小化を低減し、歩留の向上を図るこ
とにある。 Therefore, an object of the present invention is to preform a continuous casting bloom into a predetermined shape using existing equipment,
The object of the present invention is to improve the yield by reducing the fish tail and narrowing of the width of the leading and trailing ends that occur during hot rolling.

本発明の方法は、連続鋳造ブルームの分塊圧延
時に、分塊圧延機にロール胴部に所定形状の突出
部を有する異形ロールを設けること、該ブルーム
の送り位置と該異形ロールの回転位置とを所定の
関係に同期させること、該異形ロールによつて該
ブルームの先端部及び後端部のうちの少なくとも
一方に対して該ブルームの端部が原形を残しえる
ように該ブルームの最端面から所定の位置で幅方
向に圧縮部を成形することからなる。 The method of the present invention includes, when blooming a continuous casting bloom, providing a deformed roll having a protrusion of a predetermined shape on the roll body in a blooming mill, and adjusting the feed position of the bloom and the rotational position of the deformed roll. synchronizing the bloom into a predetermined relationship, and by the irregularly shaped roll, from the endmost surface of the bloom so that the end of the bloom can remain in its original shape with respect to at least one of the leading end and the trailing end of the bloom. It consists of forming a compression part in the width direction at a predetermined position.

本発明の装置は、連続鋳造ブルームの分塊圧延
機において、送給されてくる連続鋳造ブルームの
位置決めを行うメジヤリング・ロールと、該ブル
ームの端部に圧縮部を成形するようにロール胴部
に所定形状の突出部を有する異形ロールと、該ブ
ルームを前記異形ロールに押し込むブツシヤと、
該ブルームの端部が原形を残したまま前記圧縮部
を形成するように該ブルームの送り位置と前記異
形ロールの回転位置とを同期させる制御装置とか
らなる。 The device of the present invention is used in a continuous casting bloom blooming mill, and includes a measuring roll for positioning the fed continuous casting bloom, and a measuring roll for forming a compressed part at the end of the bloom. an irregularly shaped roll having a protrusion of a predetermined shape; a bushier for pushing the bloom into the irregularly shaped roll;
It comprises a control device that synchronizes the feed position of the bloom and the rotational position of the irregularly shaped roll so that the compressed portion is formed while the end of the bloom remains in its original shape.

本発明の方法では、第２図および第３図に示す
ような異形ロール１を分塊圧延機に使用する。こ
の異形ロール１には突出部１１が設けられてい
て、連続鋳造ブルームＢに後述する圧縮部Ｃ（第
８図）を成形する。突出部１１は、第２図Ａに示
すように、ロール胴部の全長にわたつて設ける
か、または第２図Ｂに示すように、ロール胴部の
一部に設けてもよい。さらに、突出部１１は、第
３図Ａに示すように、すべて同じ形状および寸法
に成形されるか、または第３図Ｂに示すように、
それぞれ異なる形状および寸法に成形されてもよ
い。 In the method of the present invention, a deformed roll 1 as shown in FIGS. 2 and 3 is used in a blooming mill. This irregularly shaped roll 1 is provided with a protruding part 11, and forms a compressed part C (FIG. 8), which will be described later, in the continuous casting bloom B. The protrusion 11 may be provided over the entire length of the roll body, as shown in FIG. 2A, or may be provided on a portion of the roll body, as shown in FIG. 2B. Furthermore, the protrusions 11 may all be molded to the same shape and dimensions, as shown in FIG. 3A, or, as shown in FIG. 3B,
Each may be molded into different shapes and dimensions.

第４図を参照して、一般の連続鋳造ブルームの
分塊圧延ラインの工程について簡単に説明する。
連続連造装置２によつて製造されたブルームは均
熱炉３において所定の温度（1100〜1300℃）に加
熱され、所定のピツチで分塊圧延機４に送り出さ
れて所定寸法の圧延素材に分塊圧延され、さらに
粗圧延機５に送られて所定寸法の熱延成品に粗圧
延される。 With reference to FIG. 4, the steps of a general continuous casting bloom blooming line will be briefly described.
The bloom produced by the continuous production device 2 is heated to a predetermined temperature (1100 to 1300°C) in a soaking furnace 3, and sent to a blooming mill 4 at a predetermined pitch to be rolled into a rolled material of a predetermined size. The product is bloomed and further sent to a rough rolling mill 5 where it is roughly rolled into a hot-rolled product having a predetermined size.

本発明の方法においては、分塊圧延機４の水平
ロールを前述した異形ロール１に構成するか（第
５図Ａ）、または分塊圧延機４の垂直ロールを異
形ロール１に構成する（第５図Ｂ）。 In the method of the present invention, either the horizontal rolls of the blooming mill 4 are constructed as the aforementioned irregular rolls 1 (FIG. 5A), or the vertical rolls of the blooming mill 4 are constructed as the irregular rolls 1 (see FIG. 5A). Figure 5B).

本発明の方法では、分塊圧延機４において異形
ロール１を利用してブルームＢの先端部および後
端部のうちの少なくとも一方に対して圧縮部Ｃを
成形する。すなわち、第８図に示すように、通常
の分塊圧延に先立つて連続鋳造ブルームＢの先端
部または後端部の一方Ａまたは両方Ｂに対して圧
縮部Ｃを成形する。 In the method of the present invention, a compressed portion C is formed on at least one of the leading end and the trailing end of the bloom B using the deformed roll 1 in the blooming mill 4. That is, as shown in FIG. 8, a compressed part C is formed on one or both of the leading end and the trailing end A of the continuous casting bloom B prior to normal blooming rolling.

圧縮部Ｃは、第７図に示すように、ブルームＢ
の最端面B1から所定の距離Ｌにおける幅方向の
両エツジに所定の深さＥで成形される。距離Ｌお
よび深さＥは、実験によつて求められる。ただ
し、距離Ｌは少なくともブルームＢの端部が原形
を残しえる程度とし、また、深さＥは幅圧下量の
半分を超えない程度にする。また、圧縮部Ｃの曲
率は異形ロール１の突出部１１の曲率と同じにす
る。 As shown in FIG.
A predetermined depth E is formed on both edges in the width direction at a predetermined distance L from the endmost surface B1 . The distance L and depth E are determined by experiment. However, the distance L should be such that at least the end of the bloom B can retain its original shape, and the depth E should be such that it does not exceed half of the width reduction amount. Further, the curvature of the compressed portion C is made the same as the curvature of the protruding portion 11 of the irregularly shaped roll 1.

前述したように、ブルーム端部には原形部分が
残されているので、異形ロールによる圧縮部成形
のさいに、ブルームが長手方向に逃げることもな
く、安定した予成形が可能となる。さらに、圧縮
部成形のさいにブルーム端部が外へ膨出するため
に、フイツシユ・テールＦの中央部の凹みが軽減
され歩留向上効果が一層顕著となる。 As described above, since the original shape remains at the end of the bloom, stable preforming is possible without the bloom escaping in the longitudinal direction when forming the compressed part using irregularly shaped rolls. Furthermore, since the end of the bloom bulges out during compression section molding, the depression in the center of the fish tail F is reduced and the yield improvement effect becomes even more remarkable.

異形ロール１によつてブルームＢに圧縮部Ｃを
成形するさいに、実際にはスラブＢの最端面B1
は、第８図に示すように、材料の流れによつて幅
方向中央部が外側に張り出される。 When forming the compressed portion C on the bloom B by the irregularly shaped roll 1, the end face B 1 of the slab B is actually
As shown in FIG. 8, the center portion in the width direction is extended outward due to the flow of the material.

このように予成形されたブルームが従来の分塊
圧延機および粗圧延機で圧延されるとき、熱延成
品Ｍの端部は圧延方向に押し出され、フイツシ
ユ・テールが発生するが、最端面の張出し効果と
相殺し、大幅に減少する。しかも、ブルーム端部
は幅予成形がされていないために幅小化も生じな
い。 When the bloom thus preformed is rolled in a conventional blooming mill or roughing mill, the ends of the hot-rolled product M are pushed out in the rolling direction, producing a fishtail, but This offsets the overhang effect and reduces it significantly. Moreover, since the bloom end is not preformed in width, the width does not become narrower.

次に、第６図を参照して、本発明の装置につい
て説明する。本発明の装置は、連続鋳造ブルーム
の分塊圧延機４において、送給されてくる連続鋳
造ブルームＢの位置決めを行うメジヤリング・ロ
ール６と、ブルームＢの端部に圧縮部Ｃを成形す
る孔型ロール１と、ブルームＢを異形ロール１に
押し込むプツシヤ７と、プツシヤ７の送り位置と
異形ロール１の回転位置とを同期させる制御装置
８とからできている。 Next, the apparatus of the present invention will be explained with reference to FIG. The apparatus of the present invention is a continuous casting bloom blooming mill 4, which includes a measuring roll 6 for positioning the fed continuous casting bloom B, and a hole mold for forming a compression part C at the end of the bloom B. It is made up of a roll 1, a pusher 7 that pushes the bloom B onto the irregularly shaped roll 1, and a control device 8 that synchronizes the feeding position of the pusher 7 and the rotational position of the irregularly shaped roll 1.

メジヤリング・ロール６の回転数は、パルス・
ジエネレータPGによつて検出されて制御装置８
に送られる。プツシヤ７は、例えば流体圧シリン
ダ７１のピストン・ロツド７２の先端に押し部材
７３が取り付けられていて、押し部材７３がブル
ームＢの後端部を押してブルームＢを異形ロール
１にかみ込ませる。 The rotation speed of the measuring roll 6 is pulse
Detected by generator PG and controlled by control device 8
sent to. In the pusher 7, for example, a pushing member 73 is attached to the tip of a piston rod 72 of a fluid pressure cylinder 71, and the pushing member 73 pushes the rear end of the bloom B to cause the bloom B to bite into the irregularly shaped roll 1.

異形ロール１はモータＭによて歯車列９をかい
して互いに連動して駆動される。異形ロール１の
回転位置は検出器８１によつて検出されて、制御
装置８に送られる。 The irregularly shaped rolls 1 are driven by a motor M through a gear train 9 in conjunction with each other. The rotational position of the irregularly shaped roll 1 is detected by a detector 81 and sent to the control device 8 .

制御装置８は、パルス・ジエネレータPGから
のブルームＢの送り位置信号と、異形ロール１の
回転位置信号とを受け、設定値と比較してモータ
Ｍおよび流体圧シリンダ７１に制御信号を送る。
この制御信号は、プツシヤ７の作動タイミングと
異形ロール１の回転位置とを同期させる。例え
ば、第６図に示すように、異形ロール１の円周方
向を４等分する位置P1，P2，P3，P4をそれぞれ
駆動開始・停止点とする。ブルームＢの最端面
B1が異形ロール１の円周方向位置P1，P2，P3，
P4のうちの任意の１つまたは特定の１つに係合
するように、ブルームＢおよび異形ロール１を位
置決めする。位置決め後、プツシヤ７を作動させ
るとともに異形ロール１を1/4回転させて、ブル
ームＢの端部に圧縮部Ｃを成形する。圧縮部成形
後は、異形ロール１を最大に開いてブルームＢを
通過させる。ブルームＢの後端部に圧縮部を成形
する場合には、前述の送り方向とは逆の向きにブ
ルームＢを送つて前述した圧縮部成形を行えばよ
い。 The control device 8 receives the feed position signal of the broom B from the pulse generator PG and the rotational position signal of the irregularly shaped roll 1, compares the signals with set values, and sends a control signal to the motor M and the fluid pressure cylinder 71.
This control signal synchronizes the operating timing of the pusher 7 and the rotational position of the irregularly shaped roll 1. For example, as shown in FIG. 6, positions P 1 , P 2 , P 3 , and P 4 that equally divide the circumferential direction of the irregularly shaped roll 1 into four are set as drive start and stop points, respectively. Edge of bloom B
B 1 is the circumferential position P 1 , P 2 , P 3 ,
The broom B and profile roll 1 are positioned so as to engage any one or a specific one of P 4 . After positioning, the pusher 7 is operated and the irregularly shaped roll 1 is rotated 1/4 of a turn to form a compressed portion C at the end of the bloom B. After forming the compression part, the irregularly shaped roll 1 is opened to the maximum and the bloom B is allowed to pass through. When forming a compressed portion at the rear end of the bloom B, the compressed portion may be formed by feeding the bloom B in the opposite direction to the above-described feeding direction.

次に、本発明の方法の具体的実施例について説
明する。 Next, specific examples of the method of the present invention will be described.

(1) 使用ブルーム寸法 No.１：厚み370mm×幅600mm×長さ6000mm No.２：厚み370mm×幅600mm×長さ6000mm (2) 圧縮部寸法 Ｌ＝350mm 曲率半径Ｒ＝500mm Ｅ＝60mmおよびＥ＝120mm (3) 粗圧延後の熱延成品寸法 No.１：直径282mm×長さ20700mm No.２：直径282mm×長さ20700mm (4) 粗圧延結果 本発明の方法による予成形量とフイツシユ・
テール重量比率との関係を第９図に示す。(1) Bloom dimensions used No. 1: Thickness 370mm x Width 600mm x Length 6000mm No. 2: Thickness 370mm x Width 600mm x Length 6000mm (2) Compression section dimensions L = 350mm Radius of curvature R = 500mm E = 60mm and E=120mm (3) Dimensions of hot rolled product after rough rolling No. 1: Diameter 282mm x length 20700mm No. 2: Diameter 282mm x length 20700mm (4) Rough rolling results Preforming amount and fitting by the method of the present invention・
The relationship with the tail weight ratio is shown in FIG.

本発明の方法によれば、熱間圧延後の成品のフ
イツシユ・テールおよび幅小化が著しく減少する
ので、歩留の向上を図ることができる。 According to the method of the present invention, the fish tail and narrowing of the product after hot rolling are significantly reduced, so that the yield can be improved.

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

第１図は従来法によつて圧延された材料の平面
図。第２図は本発明の方法で使用される異形ロー
ルの斜視図。第３図は異形ロールの異なる突出部
を示す正面図。第４図は連続鋳造ブルームの分塊
圧延ラインの工程線図。第５図は本発明の方法が
適用される分塊圧延機の形態を示す説明図。第６
図は本発明の方法を実施する装置の概略構成図。
第７図は本発明の方法の説明図。第８図は本発明
の方法によつて予成形されたブルームの平面図。
第９図は予成形量とフイツシユ・テールとの関係
を示すグラフ。 １……異形ロール、６……メジヤリング・ロー
ル、７……プツシヤ、９……歯車列、１１……突
出部、Ｂ……ブルーム、Ｃ……圧縮部。 FIG. 1 is a plan view of a material rolled by a conventional method. FIG. 2 is a perspective view of a irregularly shaped roll used in the method of the present invention. FIG. 3 is a front view showing different protrusions of the irregularly shaped roll. Figure 4 is a process diagram of a continuous casting bloom blooming line. FIG. 5 is an explanatory diagram showing the form of a blooming mill to which the method of the present invention is applied. 6th
The figure is a schematic diagram of an apparatus for carrying out the method of the present invention.
FIG. 7 is an explanatory diagram of the method of the present invention. FIG. 8 is a plan view of a bloom preformed by the method of the present invention.
FIG. 9 is a graph showing the relationship between the amount of preforming and the fish tail. 1... Irregular roll, 6... Measuring roll, 7... Pusher, 9... Gear train, 11... Projection part, B... Bloom, C... Compression part.

Claims (1)

【特許請求の範囲】 １ 連続鋳造ブルームの分塊圧延時に、分塊圧延
機にロール胴部に所定形状の突出部を有する異形
ロールを設けること、該ブルームの送り位置と該
異形ロールの回転位置とを所定の関係に同期させ
ること、該異形ロールによつて該ブルームの先端
部および後端部のうちの少なくとも一方に対して
該ブルームの端部が原形を残しえるように該ブル
ームの最端面から所定の位置で幅方向に圧延部を
成形することを特徴とした連続鋳造ブルームの予
成形方法。 ２ 連続鋳造ブルームの分塊圧延機において、送
給されてきる連続鋳造ブルームの位置決めを行う
メジヤリング・ロールと、該ブルームの端部に圧
縮部を成形するようにロール胴部に所定形状の突
出部を有する異形ロールと、該ブルームを前記異
形ロールに押し込むプツシヤと、該ブルームの端
部が原形を残したまま前記圧縮部を形状するよう
に該ブルームの送り位置と前記異形ロールの回転
位置とを同期させる制御装置とからなる連続鋳造
ブルームの予成形装置。[Scope of Claims] 1. During blooming and rolling of continuous casting blooms, the blooming mill is provided with a deformed roll having a protrusion of a predetermined shape on the roll body, and the feed position of the bloom and the rotational position of the deformed roll are provided. and synchronizing the bloom into a predetermined relationship, and the outermost surface of the bloom is controlled by the odd-shaped roll so that the end of the bloom can remain in its original shape with respect to at least one of the leading end and the trailing end of the bloom. A continuous casting bloom preforming method characterized by forming a rolled portion in the width direction at a predetermined position. 2. In a continuous casting bloom blooming mill, a measuring roll is used to position the fed continuous casting bloom, and a protrusion of a predetermined shape is provided on the roll body so as to form a compressed part at the end of the bloom. a pusher for pushing the bloom into the irregular shape roll, and a feed position of the bloom and a rotational position of the irregular roll so that the end of the bloom forms the compressed part while retaining its original shape. A continuous casting bloom preforming device consisting of a synchronized control device.
JP1204782A 1982-01-28 1982-01-28 Method and device for preforming of continuous casting bloom Granted JPS58128201A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1204782A JPS58128201A (en) 1982-01-28 1982-01-28 Method and device for preforming of continuous casting bloom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1204782A JPS58128201A (en) 1982-01-28 1982-01-28 Method and device for preforming of continuous casting bloom

Publications (2)

Publication Number Publication Date
JPS58128201A JPS58128201A (en) 1983-07-30
JPH0141401B2 true JPH0141401B2 (en) 1989-09-05

Family

ID=11794682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1204782A Granted JPS58128201A (en) 1982-01-28 1982-01-28 Method and device for preforming of continuous casting bloom

Country Status (1)

Country Link
JP (1) JPS58128201A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038201B2 (en) * 1978-09-04 1985-08-30 石川島播磨重工業株式会社 Rolled material edge shape control device

Also Published As

Publication number Publication date
JPS58128201A (en) 1983-07-30

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