JPS6019795Y2 - Heat retention device in continuous casting equipment - Google Patents

Description

【考案の詳細な説明】 本考案は連続鋳造設備に関し、詳しくは湾曲形連続鋳造
設備のガイドロール群における保熱装置に関するもので
ある。[Detailed Description of the Invention] The present invention relates to continuous casting equipment, and more particularly to a heat retention device in a group of guide rolls of curved continuous casting equipment.

湾曲形連続鋳造設備（以下単に連続鋳造装置と云う）に
おける鋳片の製造は、一般に第１図に示す如くタンディ
シュ１に貯留された溶鋼２を鋳型３に注入して鋳片４と
し、該鋳片４を引出しガイドロール（以下単にガイドロ
ールと云う）群５で連続的に引き出しつつ後続する鋳片
移送テーブル（以下単に移送テーブルと云う）６に送出
する。In general, the manufacture of slabs in curved continuous casting equipment (hereinafter simply referred to as continuous casting equipment) involves injecting molten steel 2 stored in a tundish 1 into a mold 3 to form slabs 4, as shown in Fig. 1. The pieces 4 are continuously drawn out by a group 5 of pull-out guide rolls (hereinafter simply referred to as guide rolls) and delivered to a subsequent slab transfer table (hereinafter simply referred to as transfer table) 6.

移送テーブル６では前記連続的に送出されてくる鋳片４
を切断装置７で設定長さに切断すると共に後続設備へ移
送せしめ、所望する鋳片４の製造が行われる。On the transfer table 6, the continuously delivered slabs 4 are
The cast slab 4 is cut into a set length by the cutting device 7 and transferred to subsequent equipment, thereby producing the desired slab 4.

鋳片４はガイドロール群５の終端、即ちガイドロール群
５から移送テーブル６に送出される時点でその凝固が芯
部まで完了するよう、例えばガイドロール群５における
水冷域の長さおよびガイドロール群５の配設機長（以下
単に機長と云う）が適宜設定されている。For example, the length of the water cooling area in the guide roll group 5 and the guide rolls are adjusted so that the slab 4 is completely solidified to the core at the end of the guide roll group 5, that is, at the time it is delivered from the guide roll group 5 to the transfer table 6. A pilot assigned to group 5 (hereinafter simply referred to as "captain") is appropriately set.

ところで従来、前記切断装置７で切断された鋳片４は冷
却設備等で一旦常温まで冷却され、冷間疵手入れ、ある
いは仮貯蔵等を行った後、加熱炉で再加熱し、次工程の
圧延ラインに送出されることが一般的であった。By the way, conventionally, the slab 4 cut by the cutting device 7 is once cooled down to room temperature in a cooling equipment or the like, and after being subjected to cold flaw cleaning or temporary storage, it is reheated in a heating furnace and ready for rolling in the next process. It was common for it to be sent out on the line.

しかしながら前記鋳片４の凝固完了時における温度は１
０００℃以上の高温であることから、前記製造手段では
、冷却設備、加熱炉等の設置やその維持に多額の費用を
要する上に、そのエネルギー損失も非常に大なるものが
あった。However, the temperature at the time of completion of solidification of the slab 4 is 1
Since the temperature is as high as 000° C. or more, the above manufacturing method requires a large amount of cost to install and maintain cooling equipment, heating furnaces, etc., and the energy loss is also very large.

このため、従来においても前記切断された直後の高温を
有する鋳片４を冷却することなく、直接圧延ラインへ送
出させたり、あるいは加熱炉で圧延するに必要な温度ま
で昇温させて圧延ラインへ送出せしめる。For this reason, conventionally, the slab 4, which has a high temperature immediately after being cut, is sent directly to the rolling line without being cooled, or it is heated to the temperature necessary for rolling in a heating furnace and then sent to the rolling line. I will send it out.

いわゆるホットチャージの試みも一部にはなされていた
が、前記従来の連続鋳造装置ではガイド占−ル群および
移送テーブル６を移送される間の鋳片４の温度低下が著
しく、直接圧延できることは非常に少なく、而して必然
的に加熱炉で多量の燃焼が必要であった。Some attempts have been made to use so-called hot charging, but in the conventional continuous casting equipment, the temperature of the slab 4 decreases significantly while it is being transferred through the guide roll group and the transfer table 6, making it impossible to directly roll it. very little, and therefore necessarily required a large amount of combustion in a heating furnace.

本考案は前記従来における問題点の積極的な解決を計る
ものでガイドロール群５から引出される鋳片４の温度を
できるだけ高く保持することを可能ならしめる保熱装置
の提供をその目的とするものである。The present invention is intended to proactively solve the above-mentioned problems in the conventional art, and its purpose is to provide a heat retaining device that makes it possible to maintain the temperature of the slab 4 drawn out from the guide roll group 5 as high as possible. It is something.

以下実施例に基づき本考案の構成を詳述する。The configuration of the present invention will be described in detail below based on examples.

第２図は本考案の一実施例を示す保熱装置の全体構成を
示すもので、ガイドロール群５の鋳片出側部分図である
。FIG. 2 shows the overall structure of a heat retaining device according to an embodiment of the present invention, and is a partial view of the guide roll group 5 on the slab exit side.

該第２図において８は保熱カバーであり、９は鋳片４の
端部位置を連続的に検出する検出装置である。In FIG. 2, 8 is a heat retaining cover, and 9 is a detection device that continuously detects the end position of the slab 4.

保熱カバー８は第３図の縦断面図、第４図の側面図、第
５図の平面図で示すように断熱側板（以下、単に側板と
云う）８１と該側板８１の上下端部に固着され、互いに
隣り合う上下ガイドロール間間隙を閉塞する帯状断熱部
材（以下単に帯状部材と云う。As shown in the longitudinal cross-sectional view of FIG. 3, the side view of FIG. 4, and the plan view of FIG. A band-shaped heat insulating member (hereinafter simply referred to as a band-shaped member) is fixed and closes the gap between the upper and lower guide rolls that are adjacent to each other.

）８２とから構成されている。)82.

本実施例における前記側板８１および帯状部材８２は鉄
板で形成された枠体８１ａ。The side plate 81 and the strip member 82 in this embodiment are a frame 81a formed of an iron plate.

８２ａの内面に石綿、あるいはセラミックスファイバー
等の断熱材８３をライニング状に貼着し、保熱カバー８
としての保熱性を向上せしめた。A heat insulating material 83 such as asbestos or ceramic fiber is adhered to the inner surface of the heat insulating cover 82a in the form of a lining.
Improved heat retention properties.

前記保熱カバー８は連杆１０を介して液圧あるいは気圧
シリンダー、電動モーター等の駆動装置１１に連結され
、該駆動装置１１を駆動することによって横移動可能に
構成されている。The heat retaining cover 8 is connected to a drive device 11 such as a hydraulic or pneumatic cylinder or an electric motor via a connecting rod 10, and is configured to be able to move laterally by driving the drive device 11.

即ち、本実施例においては側板８１に連杆１０を固着せ
しめられると共に連杆１０を案内フレーム１２で摺動自
在に支持することにより、側板８１は横移動可能に保持
されている。That is, in this embodiment, the side plate 81 is held movable laterally by fixing the connecting rod 10 to the side plate 81 and slidably supporting the connecting rod 10 by the guide frame 12.

ところで本考案者等はガイドロール群５の鋳片出側のお
ける鋳片４の温度をできるだけ高温に保持するための手
段について種々研究検討を行った結果、ガイドロール群
５の鋳片出側の任意部分において、鋳片４の端部のみを
前述したような保熱カバー８被覆することによ３す、著
しい効果が生スるという知見を確認した。By the way, the inventors of the present invention have conducted various research studies on means for maintaining the temperature of the slab 4 on the slab exit side of the guide roll group 5 as high as possible. It has been confirmed that a remarkable effect can be produced by covering only the ends of the slab 4 with the heat retaining cover 8 as described above.

第６図は前記知見を確認するための一実験結果を示すも
ので本考案の保熱カバー８を設けたときと、設けないと
きの鋳片４の温度降下状況を比較したものである。FIG. 6 shows the results of an experiment to confirm the above-mentioned findings, and compares the temperature drop of the slab 4 when the heat retaining cover 8 of the present invention is provided and when it is not provided.

つまり本実験例は２５０７ＦＥ＋７１厚Ｘ １０００ｍ
ｍ巾の鋳片４を１．６ｍ／ｍｉｎの移送速度で製造した
際における端面から２５７７１７７１の部位における厚
み方向の平均温度端面角部および鋳片４の巾方向中央部
の温度を比較したものである。In other words, this experimental example is 2507FE + 71 thickness x 1000m
The average temperature in the thickness direction at a portion 25771771 from the end face when manufacturing a slab 4 with a width of m at a transfer speed of 1.6 m/min The temperature at the corner of the end face and the center part in the width direction of the slab 4 is compared. be.

尚本実験に用いた保熱カバー８の帯状部材８２の長さ１
（第３図参照）は１００鴫、鋳片４の端面と保熱カバ
ー８の内面との間隙ｔは３−とした。The length of the band member 82 of the heat retaining cover 8 used in this experiment is 1
(See FIG. 3) was 100 mm, and the gap t between the end face of the slab 4 and the inner surface of the heat retaining cover 8 was 3-.

該第６図から判明するように鋳片４の巾方向中央部にお
ける温度は実線ａで示すように保熱カバー８がなくても
鋳片出側、つまりメニスカスから３７ｍの位置において
１２１１’Ｃの温度に保持できるが、端面より２５ｍｍ
の部位および角部は、保熱カバー８のない場合は細破線
ｂ′および細一点鎖線Ｃ′で示すように８００℃および
６３０℃と大巾に降下する。As is clear from FIG. 6, the temperature at the widthwise center of the slab 4 is 1211'C even without the heat retaining cover 8, as shown by the solid line a, at the exit side of the slab, that is, at a position 37 m from the meniscus. Can be maintained at temperature, but 25mm from the end surface
In the case where the heat insulating cover 8 is not provided, the temperatures at the portions and corners of , as shown by the thin broken line b' and the thin dotted line C', drop to 800° C. and 630° C., respectively.

これに対し、本考案の保熱カバー８を水冷域ガイドロー
ル群（メニスカスから１６ｍまで）に続いて装着した場
合には、端面より２５ｒｒｒ！ｎの部位では太破線すで
示すように９９７℃に、又角部においても太一点鎖線Ｃ
で示すように９２１℃に保持でき、その温度降下を著し
く低減させことが可能であった。On the other hand, when the heat insulating cover 8 of the present invention is installed following the water-cooled area guide roll group (up to 16 m from the meniscus), 25 rrr from the end surface! At the part n, the temperature is 997°C as shown by the thick broken line, and also at the corner part, the thick dashed line C
As shown in , it was possible to maintain the temperature at 921°C and significantly reduce the temperature drop.

而して本考案の保熱カバー８を設置した場合、ガイドロ
ール群５から引出された鋳片４が圧延機に達する前でそ
の端部のみを例えば端部誘導加熱装置で若干加熱する程
度で直接圧延することが充分可能となった。Therefore, when the heat retaining cover 8 of the present invention is installed, only the ends of the slab 4 pulled out from the guide roll group 5 are slightly heated by, for example, an end induction heating device before reaching the rolling mill. Direct rolling became fully possible.

さて、前記保熱カバー８による保熱効果を高めるために
は鋳片４の表面と、保熱カバー８の内面、つまり断熱材
８３の内面との間隙ｔをできるだけ小さくすることが好
ましい。Now, in order to enhance the heat retaining effect of the heat retaining cover 8, it is preferable to make the gap t between the surface of the slab 4 and the inner surface of the heat retaining cover 8, that is, the inner surface of the heat insulating material 83, as small as possible.

一方鋳片４の端部位置はその端面にバルジング歪が発生
したり、又鋳片４の蛇行が屡々生じることから変動する
ことが多い。On the other hand, the end position of the slab 4 often fluctuates because bulging strain occurs on the end face and the slab 4 often meanders.

従って本考案においては鋳片４が保熱カバ−８設置部位
に達する前の部位、即ち保熱カバー８の前方に前記鋳片
４の端部位置を連続的に検出する検出装置９を設置し、
該検出装置９の検出信号に応じて駆動装置１１を作動せ
しめ、鋳片４の端面と断熱材８３の内面との間隙ｔを所
定量に制御するよう構成した。Therefore, in the present invention, a detection device 9 is installed to continuously detect the end position of the slab 4 before the slab 4 reaches the location where the heat retaining cover 8 is installed, that is, in front of the heat retaining cover 8. ,
The driving device 11 is operated in response to a detection signal from the detection device 9, and the gap t between the end face of the slab 4 and the inner surface of the heat insulating material 83 is controlled to a predetermined amount.

検出装置９としては、高温の鋳片４の端部位置、特に端
面の変動状況を検出できるものであればその構造あるい
は形式を特に限定するものではなく、例えば、周知の光
電管、レーザー、高周波等を利用したものあるいは、第
７図に示すように鋳片４の端面に接する接触子１３の基
準点よりの移動量、第８図に示すように鋳片４の巾方向
に設定距離を有せしめて配設された検出端１４との接触
を検出することによって端部位置を検出する装置等を用
いればよい。The structure or type of the detection device 9 is not particularly limited as long as it can detect the position of the end of the hot slab 4, especially the fluctuation of the end face.For example, it may be a well-known phototube, laser, high frequency, etc. Alternatively, as shown in FIG. 7, the amount of movement of the contact 13 from the reference point in contact with the end face of the slab 4, or a set distance in the width direction of the slab 4 as shown in FIG. A device or the like may be used that detects the end position by detecting contact with the detection end 14 disposed at the end.

以上詳述したように本考案は、その構造が極めて簡単な
ものであるから狭隘なガイドローラ５においても、その
設置が簡単に、かつ確実に行えるようになり、加えて鋳
片４の蛇行あるいは歪等に応じても、保熱カバー８と鋳
片４の上、下、側端面との間隙ｔを最適に制御できるこ
とから、保熱カバー８による保熱性が著しく向上した。As described in detail above, the present invention has an extremely simple structure, so that it can be installed easily and reliably even in a narrow guide roller 5. Even in response to distortion, etc., the gaps t between the heat retaining cover 8 and the upper, lower, and side end surfaces of the slab 4 can be optimally controlled, so that the heat retaining performance of the heat retaining cover 8 is significantly improved.

而して保熱カバー８は連続鋳造設備の能力、機長、製造
品種等に応じて、ガイドローラ群の鋳片出側の任意部分
に設置すれば良く、その設置長さおよび帯状部材８２の
突出長さ１も適宜設定すれば良い。The heat retaining cover 8 may be installed at any position on the slab outlet side of the guide roller group depending on the capacity, machine length, manufacturing type, etc. of the continuous casting equipment, and the installation length and the protrusion of the strip member 82 may be The length 1 may also be set appropriately.

特に保熱カバー８の設置長さが長い場合には第２図およ
び第４図に示すように長さ方向で適宜分割し横移動が容
易な如く構威し、又検出装置９を前記分割された各々の
保熱カバー８の前方に設置し、それぞれ横移動制御を行
うことも可能であり、かつ効果的な手段である。In particular, when the installation length of the heat insulating cover 8 is long, as shown in FIG. 2 and FIG. It is also possible and effective to install the heat retaining cover 8 in front of each heat retaining cover 8 and control the lateral movement of each heat retaining cover 8.

以上詳述したように本考案の実用的効果は非常に大であ
る。As detailed above, the practical effects of the present invention are very large.

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

第１図は周知の一般的な連続鋳造設備の断面構造図、第
２図〜第８図は本考案の実施例を示すもので、第２図は
本考案の保熱カバーの設置状況を示すガイドロール群の
鋳片出側の部分図、第３図は保熱カバーの縦断面図、第
４図は第３図の側面図、第５図は第３図の平面図、第６
図は本考案の効果を表すための一実験結果を示す図表、
第７図および第８図は端部検出装置の異なった実施例を
示す平面図である。 １・・・・・・タンディシュ、２・・・・・・溶鋼、３
・・・・・・鋳型、４・・・・・・鋳片、５・・・・・
・ガイドロール群、６・・・・・・移送テーブル、７・
・・・・・切断装置、８・・・・・・保熱カバー、８１
・・・・・・断熱側板、８２・・・・・・帯状断熱部材
、８３・・・・・・断熱材、９・・・・・・端部検出装
置、１０・・・・・・連杆、１１・・・・・・駆動装置
、１２・・・・・・案内フレーム、１３・・・・・・接
触子、１４・・・・・・検出端。Fig. 1 is a cross-sectional structural diagram of a well-known general continuous casting equipment, Figs. 2 to 8 show examples of the present invention, and Fig. 2 shows the installation situation of the heat insulating cover of the present invention. A partial view of the slab outlet side of the guide roll group, FIG. 3 is a longitudinal sectional view of the heat insulation cover, FIG. 4 is a side view of FIG. 3, FIG. 5 is a plan view of FIG. 3, and FIG.
The figure is a chart showing the results of an experiment to show the effects of the present invention.
7 and 8 are plan views showing different embodiments of the end detection device. 1... Tandish, 2... Molten steel, 3
...Mold, 4...Slab, 5...
・Guide roll group, 6... Transfer table, 7.
... Cutting device, 8 ... Heat retention cover, 81
...Insulation side plate, 82 ... Band-shaped heat insulation member, 83 ... Heat insulation material, 9 ... End detection device, 10 ... Continuation Rod, 11... Drive device, 12... Guide frame, 13... Contact, 14... Sensing end.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 連続鋳造設備の鋳片引出しガイドロール群の鋳片出側の
任意部分に、ガイドロールの連設方向に沿って横移動可
能な断熱側板を設けると共に互いに隣り合う上下ガイド
ロール間間隙を閉塞する設定長さの帯状断熱部材を前記
側板に固着してなる保熱カバーと；前記保熱カバーの前
方に設置され、鋳片の端部位置を連続的に検出する鋳片
端部位置検出装置と；前記検出装置の検出信号に応じて
前記保熱カバーを連杆を介して横移動せしめる駆動装置
とから構成されてなる保熱装置を配設し、ガイドロール
群から引出される鋳片の温度を高温に保持することを特
徴とする連続鋳造設備における保熱装置。A heat insulating side plate that is movable laterally along the direction in which the guide rolls are arranged is provided at an arbitrary part on the slab outlet side of a group of slab pull-out guide rolls in a continuous casting facility, and a setting that closes the gap between the upper and lower guide rolls that are adjacent to each other. a heat retaining cover formed by fixing a long strip-shaped heat insulating member to the side plate; a slab end position detection device installed in front of the heat retaining cover and continuously detecting the end position of the slab; A heat retaining device is provided, which includes a drive device that moves the heat retaining cover laterally via a connecting rod in response to a detection signal from a detection device, and the heat retaining device is configured to raise the temperature of the slab pulled out from the guide roll group to a high temperature. A heat retaining device for continuous casting equipment, which is characterized by maintaining the heat at a constant temperature.