JPH0929393A - Method and device for cleaning cooling drum for casting thin strip slab - Google Patents
Method and device for cleaning cooling drum for casting thin strip slabInfo
- Publication number
- JPH0929393A JPH0929393A JP18947995A JP18947995A JPH0929393A JP H0929393 A JPH0929393 A JP H0929393A JP 18947995 A JP18947995 A JP 18947995A JP 18947995 A JP18947995 A JP 18947995A JP H0929393 A JPH0929393 A JP H0929393A
- Authority
- JP
- Japan
- Prior art keywords
- cooling drum
- peripheral surface
- casting
- brush roll
- drum
- 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.)
- Withdrawn
Links
Landscapes
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
(57)【要約】
【課題】 薄帯鋳片の連続鋳造中において、冷却ドラム
の周面に付着した異物をドラムの周面を疵付けることな
く除去することにより、異物による鋳片の表面割れや汚
れなどの表面欠陥の発生を防止する。
【解決手段】 回転する冷却ドラム１の周面によって湯
溜まり部４を形成し、湯溜まり部４に供給された溶融金
属Ｒを冷却ドラム１の周面で冷却凝固しながら薄帯鋳片
Ｓに連続鋳造する際に冷却ドラム１の周面に付着した異
物を回転するブラシロールによって除去する方法におい
て、鋳造初期においては素線径が０．１５〜０．３０mm
のブラシロール５を用い、前記鋳造初期が経過した後に
おいては素線径が０．０５〜０．１４mmであるか又は素
線が銅合金であるブラシロール６を用いることにより、
冷却ドラム１の周面に付着した異物をドラム周面を疵付
けることなく効率よく除去する。
(57) 【Abstract】 PROBLEM TO BE SOLVED: To remove surface foreign matter adhering to the peripheral surface of a cooling drum without scratching the peripheral surface of the drum during continuous casting of a thin strip cast material, thereby surface cracking of the surface of the slab due to the foreign material. Prevent the occurrence of surface defects such as dirt and stains. SOLUTION: A molten metal pool 4 is formed by a peripheral surface of a rotating cooling drum 1, and a molten metal R supplied to the molten metal pool 4 is cooled and solidified on the peripheral surface of the cooling drum 1 to form a strip cast S. In the method of removing foreign matters adhering to the peripheral surface of the cooling drum 1 during continuous casting with a rotating brush roll, the diameter of the strand is 0.15 to 0.30 mm in the initial stage of casting.
By using the brush roll 5 of No. 1, and after using the brush roll 6 in which the strand diameter is 0.05 to 0.14 mm or the strand is a copper alloy after the initial casting,
Foreign matter adhering to the peripheral surface of the cooling drum 1 is efficiently removed without scratching the peripheral surface of the drum.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、溶融金属を回転す
る冷却ドラムの周面で冷却凝固して薄帯状鋳片に連続鋳
造する方法において、冷却ドラムの周面に付着した異物
を操業中に除去する方法及び装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for continuously casting molten metal on a peripheral surface of a rotating cooling drum by cooling and solidifying the molten metal into thin strip-shaped slabs during operation of foreign substances adhering to the peripheral surface of the cooling drum. The present invention relates to a removing method and device.
【０００２】[0002]
【従来の技術】図１は、薄帯状鋳片に連続鋳造する装置
としての双ドラム式連続鋳造装置の要部を示す斜視図で
ある。図１において、一対の冷却ドラム１と、一対の冷
却ドラム１の両端面に押付装置２によって押し付けられ
た一対のサイド堰３によって湯溜まり部４が形成されて
いる。湯溜まり部４に連続して供給された溶融金属Ｒは
冷却ドラム１の周面で冷却されて凝固し、矢印方向へ回
転する冷却ドラム１と１の間から下方へ送り出されて薄
帯状の鋳片Ｓとなる。このような薄帯状鋳片の連続鋳造
においては、冷却ドラムの周面状態が鋳片の表面品質に
大きな影響を及ぼす。2. Description of the Related Art FIG. 1 is a perspective view showing a main part of a twin-drum type continuous casting apparatus as an apparatus for continuously casting thin strip-shaped cast pieces. In FIG. 1, a pool 4 is formed by a pair of cooling drums 1 and a pair of side dams 3 pressed by a pressing device 2 on both end surfaces of the pair of cooling drums 1. The molten metal R continuously supplied to the molten metal pool 4 is cooled and solidified on the peripheral surface of the cooling drum 1, and is sent downward from between the cooling drums 1 and 1 rotating in the direction of the arrow to form a thin strip casting. It becomes piece S. In such continuous casting of strip-shaped slabs, the peripheral surface condition of the cooling drum has a great influence on the surface quality of the slabs.
【０００３】例えば、鋳造開始直後は湯溜まり部の湯面
レベルが低く、浸漬ノズルは溶融金属に浸漬していない
ため、冷却ドラム周面には溶融金属Ｒの蒸発物やスプラ
ッシュ及び湯面のスカム（酸化物）が付着する。これら
の異物が除去されずに１周して溶融金属Ｒに触れると、
凝固むらを引起し鋳片Ｓの表面には割れを伴った汚れ等
が発生する。したがって冷却ドラムの周面は清浄な状態
に保持する必要があるが、冷却ドラム周面には高温の溶
融金属が供給されるため清浄な状態に保持することはな
かなか困難である。For example, immediately after the start of casting, since the level of the molten metal in the pool is low and the immersion nozzle is not immersed in the molten metal, the peripheral surface of the cooling drum evaporates or splashes the molten metal R and scum of the molten metal. (Oxide) adheres. When the molten metal R is touched once after making a round without removing these foreign matters,
The uneven solidification is caused, and the surface of the cast slab S is contaminated with cracks. Therefore, it is necessary to keep the peripheral surface of the cooling drum in a clean state, but it is difficult to keep the peripheral surface of the cooling drum in a clean state because high-temperature molten metal is supplied to the peripheral surface.
【０００４】冷却ドラムの周面に付着した異物を操業中
に除去する方法として、素線径０．０５〜０．３mmの硬
鋼線材を用いたブラシロールによって除去する方法が、
例えば特開平３−１１８９４４号公報によって知られて
いる。しかし、この方法は前記の素線径０．０５〜０．
３mmのうちで或る特定の素線径のみからなるブラシロー
ルによる異物除去のため、素線径が比較的大きい場合に
は異物除去は十分行われる反面ブラシロールの損傷が激
しいことやドラム周面を疵付けることになる。一方、素
線径が比較的小さい場合には異物除去にむらが生じ、不
十分な異物除去の結果となる。ドラム周面を疵付けた場
合は、ドラムの寿命を縮めるとともに疵付部においてシ
ェルが不均一に冷却するため鋳片に表面割れが発生する
場合がある。As a method of removing foreign matter adhering to the peripheral surface of the cooling drum during operation, a method of removing it with a brush roll using a hard steel wire having a wire diameter of 0.05 to 0.3 mm is used.
For example, it is known from Japanese Patent Laid-Open No. 3-118944. However, in this method, the wire diameter of 0.05 to 0.
The foreign matter is removed by a brush roll consisting of only a certain wire diameter of 3 mm. Therefore, the foreign matter is sufficiently removed when the wire diameter is relatively large. Will be flawed. On the other hand, if the wire diameter is relatively small, unevenness in foreign matter removal occurs, resulting in insufficient foreign matter removal. When the peripheral surface of the drum is flawed, the life of the drum is shortened and the shell is unevenly cooled in the flawed portion, which may cause surface cracks in the slab.
【０００５】特に、冷却ドラム周面でのシェル収縮応力
による鋳片の表面割れ防止のために、冷却ドラム周面に
窪みを設けた場合は、この窪みがブラッシングによって
削られるため鋳片の表面割れ防止効果が十分に得られな
いという欠点を有していた。Particularly, in order to prevent the surface cracks of the slab due to the shell contraction stress on the peripheral surface of the cooling drum, when a recess is provided on the peripheral surface of the cooling drum, the recess is scraped by brushing, and thus the surface crack of the slab is cracked. It has a drawback that the preventive effect cannot be sufficiently obtained.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、薄帯状鋳片
の連続鋳造において、冷却ドラム周面に付着した異物を
ドラム周面及びブラシロールの損耗を抑制しながら除去
することにより、鋳片表面欠陥の防止と冷却ドラム及び
ブラシロールの寿命延長を図ることを目的とする。DISCLOSURE OF THE INVENTION The present invention, in continuous casting of strip-shaped cast slab, removes foreign matter adhering to the peripheral surface of the cooling drum while suppressing wear of the peripheral surface of the cooling drum and the brush roll, and The purpose is to prevent surface defects and extend the life of the cooling drum and brush roll.
【０００７】[0007]
【課題を解決するための手段】本発明者は、冷却ドラム
周面に付着した異物のうち、特に不均一に付着した異物
が鋳片の表面性状を悪くすることを見出し、そして冷却
ドラム周面への異物の付着は、とりわけ鋳造初期におい
て多く且つ不均一である反面、鋳造初期が経過した後に
おいては比較的少なく且つ均一であることに着目し、鋳
造初期においては積極的にブラッシングをし、前記鋳造
初期が経過した後においてはドラム周面やブラシロール
の損耗を抑制しながらブラッシングすることにより、異
物の除去と冷却ドラム周面及びブラシロールの損耗防止
を両立させたものである。The present inventor has found that, of the foreign matters adhering to the peripheral surface of the cooling drum, the foreign matters adhering particularly unevenly deteriorate the surface quality of the slab, and the peripheral surface of the cooling drum. The adherence of foreign matter to the surface is particularly large and non-uniform in the initial stage of casting, but is relatively small and uniform after the initial stage of casting, and positive brushing is performed in the initial stage of casting. After the lapse of the initial stage of casting, brushing is performed while suppressing damage to the drum peripheral surface and the brush roll, thereby achieving both removal of foreign matter and prevention of damage to the cooling drum peripheral surface and the brush roll.
【０００８】本発明による冷却ドラムの清浄化方法は、
回転する冷却ドラムの周面によって湯溜まり部を形成
し、該湯溜まり部に供給された溶融金属を前記冷却ドラ
ムの周面で冷却凝固しながら薄帯状鋳片に連続鋳造する
際に前記冷却ドラムの周面に付着した異物を回転するブ
ラシロールによって除去する方法において、鋳造初期に
おいては素鋼線の線径が０．１５〜０．３０mmのブラシ
ロールを用い、前記鋳造初期が経過した後においては素
鋼線の線径が０．０５〜０．１４mmであるか又は素線が
銅合金線であるブラシロールを用いることであり、ま
た、鋳造初期が経過した後において用いるブラシロール
の素鋼線の線径は０．０５〜０．１２mmの範囲が好まし
く、素線の材質が銅合金である場合の素線径は０．０５
〜０．３０mmの範囲のものを用いることを要旨とするも
のである。The method for cleaning a cooling drum according to the present invention comprises:
The molten metal supplied to the pool is formed by the circumferential surface of the rotating cooling drum, and the molten metal supplied to the pool is continuously cooled and solidified on the circumferential surface of the cooling drum to continuously cast into a strip-shaped cast piece. In the method of removing foreign matters attached to the peripheral surface of the brush roll by a rotating brush roll, a brush roll having a wire diameter of the raw steel wire of 0.15 to 0.30 mm is used in the initial stage of casting, and after the initial stage of casting, Is to use a brush roll in which the wire diameter of the raw steel wire is 0.05 to 0.14 mm or the wire is a copper alloy wire, and the raw steel of the brush roll used after the initial casting has passed. The wire diameter is preferably in the range of 0.05 to 0.12 mm, and when the material of the wire is copper alloy, the wire diameter is 0.05.
The gist is to use one having a range of up to 0.30 mm.
【０００９】ここで、本発明における鋳造初期とは、図
１に示す湯溜まり部４に溶融金属Ｒを供給後、冷却ドラ
ム１が少なくとも３回転するまでの間であり、好ましく
は冷却ドラム１が５回転するまでの間である。Here, the initial stage of casting in the present invention is the period after the molten metal R is supplied to the molten metal pool 4 shown in FIG. 1 until the cooling drum 1 rotates at least 3 times, preferably the cooling drum 1 It is until 5 rotations.
【００１０】[0010]
【作用】冷却ドラム周面に異物が不均一に付着した異物
の表面粗さが５μｍを超えると、鋳片に表面割れを伴っ
た汚れが発生する場合が多い。鋳造を開始して後、冷却
ドラムが少なくとも３回転するまでの鋳造初期において
は、ドラム周面への異物の付着は多く且つ不均一であ
り、付着した異物の表面粗さが約５μｍを超える場合が
多い。一方、鋳造初期が経過した後、ドラム周面への異
物の付着は比較的に少なく且つ均一である。When the surface roughness of the foreign matter in which the foreign matter is nonuniformly adhered to the peripheral surface of the cooling drum exceeds 5 μm, the cast slab is often contaminated with surface cracks. In the initial stage of casting until the cooling drum makes at least 3 revolutions after the start of casting, foreign matter adheres to the drum circumferential surface in a large amount and is non-uniform, and the surface roughness of the adhered foreign matter exceeds about 5 μm. There are many. On the other hand, after the lapse of the initial stage of casting, the adhesion of foreign matter to the drum peripheral surface is relatively small and uniform.
【００１１】鋳造初期に用いるブラシロールの素線径が
０．１５mm未満であるか、又は鋳造初期が経過した後に
用いるブラシロールの素線径が０．０５mm未満である
と、ドラム周面の異物を均一に除去できないため、鋳片
に表面割れを伴った汚れが発生する。一方、鋳造初期に
おいて用いるブラシロールの素線径が０．３０mmを超え
るか、又は鋳造初期が経過した後において用いるブラシ
ロールの素線径が０．１４mmを超えると、冷却ドラム周
面に周方向の疵付が生じ易く、冷却ドラムの寿命を縮め
るとともにシェルの不均一な冷却により鋳片に表面割れ
が発生することになる。特に、冷却ドラム周面でのシェ
ル収縮応力による鋳片の表面割れ防止のために、冷却ド
ラム周面に窪みを設けた場合は、この窪みが削られて形
状が崩れるため鋳片の表面割れ防止効果が十分に得られ
なくなる。If the strand diameter of the brush roll used in the initial stage of casting is less than 0.15 mm, or if the strand diameter of the brush roll used after the initial stage of casting is less than 0.05 mm, foreign matter on the drum peripheral surface Since it cannot be uniformly removed, the slab is contaminated with surface cracks. On the other hand, if the wire diameter of the brush roll used in the initial stage of casting exceeds 0.30 mm, or if the wire diameter of the brush roll used after the initial stage of casting exceeds 0.14 mm, the circumferential direction on the peripheral surface of the cooling drum is increased. Is likely to occur, which shortens the life of the cooling drum and causes surface cracks in the slab due to uneven cooling of the shell. In particular, when a dent is provided on the cooling drum circumferential surface to prevent surface cracking of the slab due to shell contraction stress on the cooling drum circumferential surface, the dent is shaved and the shape collapses, preventing the surface cracking of the slab. The effect cannot be obtained sufficiently.
【００１２】したがって、鋳造初期においては、素線径
が０．１５〜０．３０mmの比較的線径の大きいブラシロ
ールを用いて表面粗さの大きい異物を除去し、次いで、
鋳造初期が経過した後においては、素線径が０．０５〜
０．１４mmの比較的線径の小さいブラシロールを用いる
ことにより、ドラム周面及びブラシロールの損耗を抑制
しながら異物を均一に除去し、鋳片の汚れや表面割れの
発生を防止することができる。Therefore, in the initial stage of casting, foreign matter having a large surface roughness is removed using a brush roll having a relatively large wire diameter of 0.15 to 0.30 mm, and then,
After the initial casting, the wire diameter is 0.05 to
By using a brush roll with a relatively small wire diameter of 0.14 mm, it is possible to uniformly remove foreign matter while suppressing wear of the drum peripheral surface and the brush roll, and prevent the occurrence of stains and surface cracks on the slab. it can.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面によって具体的
に説明する。図２は、本発明で用いる冷却ドラムの清浄
装置の側面図を示した。冷却ドラム１の周面に接近して
２個のブラシロール５，６を設け、各ブラシロール５，
６は一対の冷却ドラム１，１のそれぞれに設けられる
が、鋳片Ｓを挟んで左右同じ構成であるため片側のみを
示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 2 shows a side view of the cooling drum cleaning device used in the present invention. Two brush rolls 5, 6 are provided close to the peripheral surface of the cooling drum 1, and each brush roll 5,
6 is provided on each of the pair of cooling drums 1 and 1, but only one side is shown since it has the same configuration on the left and right with the slab S interposed therebetween.
【００１４】冷却ドラム１は、例えば銅製で周面にはＮ
ｉメッキ等が施され、メッキ面にはフォトエッチ加工や
ショットブラスト加工等が施されている。フォトエッチ
加工の場合は、例えば直径０．１〜１．２mm、平均深さ
４０〜２００μｍの円形乃至は楕円形の窪みが２０％以
上の面積率で形成されており、ショットブラスト加工の
場合は、例えば平均深さ２０〜２００μｍ程度の窪みが
２０以上の面積率で形成されている。The cooling drum 1 is made of copper, for example, and has N on its peripheral surface.
The i-plating is applied, and the plated surface is subjected to photoetching, shot blasting and the like. In the case of photoetching, for example, a circular or elliptical recess having a diameter of 0.1 to 1.2 mm and an average depth of 40 to 200 μm is formed with an area ratio of 20% or more. For example, depressions having an average depth of about 20 to 200 μm are formed with an area ratio of 20 or more.
【００１５】Ｎｏ．１及びＮｏ．２ブラシロール５，６
は、その軸を冷却ドラム１の軸と平行に向けて設けられ
ており、幅は少なくとも冷却ドラム１の幅以上である。
Ｎｏ．１ブラシロール５は、素線径０．２mm、素線長さ
１００mmのステンレス鋼線が植設されて形成されてお
り、Ｎｏ．２ブラシロール６は、素線径０．１０mm、素
線長さ１００mmのステンレス鋼線が植設されて形成され
ている。なお、Ｎｏ．２ブラシロール６の素線の材質が
銅合金である場合は、素線径を０．０５〜０．３０mmの
範囲内にある線径を用いてもよい。No. 1 and No. 1 2 brush rolls 5, 6
Is provided with its axis oriented parallel to the axis of the cooling drum 1, and the width is at least the width of the cooling drum 1.
No. The No. 1 brush roll 5 is formed by implanting a stainless steel wire having a wire diameter of 0.2 mm and a wire length of 100 mm. The two-brush roll 6 is formed by implanting a stainless steel wire having a wire diameter of 0.10 mm and a wire length of 100 mm. In addition, No. When the material of the wire of the 2 brush roll 6 is a copper alloy, the wire diameter may be in the range of 0.05 to 0.30 mm.
【００１６】冷却ドラム１の軸と直交する方向には一対
のリニアベアリング７が設けられており、リニアベアリ
ング７には支持台８が搭載されている。支持台８は、図
示しないシリンダーによって冷却ドラム１に接近及び離
反する方向へ移動可能である。支持台８にはブラシ喰い
込み量調整用のシリンダー１０，１１が設けられてお
り、シリンダー１０，１１のロッドには、前記ブラシロ
ール５，６が連結されている。ブラシロール５，６の軸
は支持台８に設けられたガイド溝９，９に支持されてお
り、ブラシロール５，６はシリンダー１０，１１の駆動
によって冷却ドラム１の周面に単独で当接及び離反す
る。また支持台８にはブラシロール駆動用のモータ１２
が設けられており、ブラシロール５，６は支持台８に軸
着されたテンションプーリー１３を介してベルト１４，
１４によって前記モータ１２と連結されて矢印の方向へ
回転する。A pair of linear bearings 7 are provided in a direction orthogonal to the axis of the cooling drum 1, and a support base 8 is mounted on the linear bearings 7. The support base 8 can be moved in a direction toward and away from the cooling drum 1 by a cylinder (not shown). The support base 8 is provided with cylinders 10 and 11 for adjusting the amount of brush penetration, and the brush rolls 5 and 6 are connected to the rods of the cylinders 10 and 11. The shafts of the brush rolls 5 and 6 are supported by guide grooves 9 and 9 provided on the support base 8, and the brush rolls 5 and 6 individually contact the peripheral surface of the cooling drum 1 by driving the cylinders 10 and 11. And separate. A motor 12 for driving the brush roll is mounted on the support base 8.
The brush rolls 5 and 6 are provided with a belt 14 and a belt 14 via a tension pulley 13 axially attached to a support base 8.
It is connected to the motor 12 by 14 and rotates in the direction of the arrow.
【００１７】次に本装置の作動について説明する。図２
に示すように、湯溜まり部４に溶融金属Ｒを連続して供
給するとともに、Ｎｏ．１ブラシロール５をシリンダー
１０によって冷却ドラム１の周面に押し付ける。湯溜ま
り部４の湯面が所定レベルに到達すると冷却ドラム１，
１を矢印の方向へ回転するとともに、モータ１２によっ
てＮｏ．１ブラシロール５を矢印の方向へ回転させて冷
却ドラム周面の異物を除去する。Next, the operation of this apparatus will be described. FIG.
As shown in No. 1, while the molten metal R is continuously supplied to the molten metal pool portion 4, 1. The brush roll 5 is pressed against the peripheral surface of the cooling drum 1 by the cylinder 10. When the surface of the molten metal in the pool 4 reaches a predetermined level, the cooling drum 1,
1 is rotated in the direction of the arrow, and the motor 12 drives the No. (1) The brush roll 5 is rotated in the direction of the arrow to remove foreign matter on the peripheral surface of the cooling drum.
【００１８】冷却ドラム１が少なくとも３回転すると、
シリンダー１０及び１１を作動させてＮｏ．１ブラシロ
ール５を後退させ冷却ドラム１から離すとともにＮｏ．
２ブラシロール６を冷却ドラム１の周面に押し付けて鋳
造終了までＮｏ．２ブラシロール６によって異物を除去
する。When the cooling drum 1 rotates at least 3 times,
When the cylinders 10 and 11 are operated, No. When the No. 1 brush roll 5 is moved backward and separated from the cooling drum 1, the No.
No. 2 brush roll 6 was pressed against the peripheral surface of the cooling drum 1 until the end of casting. The foreign material is removed by the 2 brush rolls 6.
【００１９】表１は、図２に示した装置を用いてＳＵＳ
３０４ステンレス鋼鋳片に連続鋳造した結果を示した。Table 1 shows SUS using the apparatus shown in FIG.
The result of continuous casting on 304 stainless steel slab is shown.
【表１】 なお、冷却ドラムは幅８００mm、直径１２００mmであ
り、ブラシロールは幅９００mm、直径１５０mm、素線長
さ４０mmとし、素線の材質はＮｏ．１ブラシロール及び
Ｎｏ．２ブラシロールともにＳＵＳ３０４ステンレス
鋼、又はＮｏ．１ブラシロールはＳＵＳ３０４ステンレ
ス鋼、Ｎｏ．２ブラシロールは真鍮とし、鋳造速度は６
０rpm とし６０トン鋳造した。鋳片は酸洗した後、１ｍ
2 当たり観察された表面割れの総長を求めた。[Table 1] The cooling drum has a width of 800 mm and a diameter of 1200 mm, the brush roll has a width of 900 mm, a diameter of 150 mm, and a wire length of 40 mm. 1 brush roll and No. 1 For both 2 brush rolls, SUS304 stainless steel, or No. 1 brush roll is SUS304 stainless steel, No. 1 2 brush roll is brass, casting speed is 6
60 tons was cast at 0 rpm. 1m after pickling the slab
The total length of surface cracks observed per 2 was determined.
【００２０】表１に示すように、Ｎｏ．１〜３の本発明
例では、鋳造後の冷却ドラム周面にはブラッシングによ
る掻き疵はなく、鋳片にも異物付着による割れを伴った
汚れは発生しなかった。これに対して、比較例のＮｏ．
４，５では、鋳造初期において異物を十分に除去できな
かった結果、鋳片には異物付着により割れを伴った汚れ
が発生した。また比較例のＮｏ．６〜８では、ドラム周
面を過剰にブラッシングした結果、鋳造後のドラム周面
に掻き疵が観察され、またブラシロールの磨耗量も多く
鋳片には表面割れが発生した。なお、以上の説明では薄
帯状鋳片に連続鋳造する装置として、双ドラム式の例を
示したが、この他に単ロール式にも適用することができ
る。As shown in Table 1, No. In Examples 1 to 3 of the present invention, the peripheral surface of the cooling drum after casting was free from scratches due to brushing, and the cast slab was not contaminated with cracks due to adhesion of foreign matter. On the other hand, in Comparative Example No.
In Nos. 4 and 5, the foreign matters could not be sufficiently removed at the initial stage of casting, and as a result, the cast slabs were contaminated with cracks due to the foreign matter. In addition, No. of the comparative example. In Nos. 6 to 8, as a result of excessive brushing of the drum peripheral surface, scratches were observed on the drum peripheral surface after casting, and the abrasion amount of the brush roll was large, and surface cracks occurred in the slab. In the above description, the twin drum type is shown as an example of an apparatus for continuously casting thin strip slabs, but a single roll type is also applicable.
【００２１】[0021]
【発明の効果】本発明によれば、薄帯状鋳片の連続鋳造
において、冷却ドラム周面への異物付着の多い鋳造初期
では異物を積極的に除去し、異物付着の少ない定常時で
はドラム周面およびブラシロールの損耗を抑制しながら
除去するようにしたので、異物を冷却ドラム周面を疵付
けることなく除去することができる。その結果、冷却ド
ラム周面への異物の付着及び冷却ドラム周面の疵付によ
る鋳片表面の汚れ防止と冷却ドラム及びブラシロールの
寿命延長の効果が得られる。特に冷却ドラム周面でのシ
ェル収縮応力による鋳片の表面割れ防止のために、冷却
ドラム周面に窪みを設けた場合は、この窪みによる作用
を十分に得ることができるので表面割れの極めて少ない
鋳片を製造できる。According to the present invention, in the continuous casting of strip-shaped slabs, foreign matter is positively removed in the initial stage of casting when a large amount of foreign matter adheres to the peripheral surface of the cooling drum, and the drum circumference is maintained in a steady state with little foreign matter adherence. Since the removal is performed while suppressing the wear of the surface and the brush roll, it is possible to remove the foreign matter without scratching the peripheral surface of the cooling drum. As a result, it is possible to prevent foreign matters from adhering to the peripheral surface of the cooling drum and to prevent stains on the surface of the slab due to scratches on the peripheral surface of the cooling drum, and to extend the life of the cooling drum and the brush roll. In particular, when a depression is provided on the cooling drum circumferential surface in order to prevent surface cracking of the slab due to shell contraction stress on the cooling drum circumferential surface, the effect of this depression can be sufficiently obtained, so surface cracking is extremely small. A slab can be manufactured.
【図１】従来の双ドラム式連続鋳造装置の斜視図であ
る。FIG. 1 is a perspective view of a conventional twin-drum type continuous casting apparatus.
【図２】本発明を実施する清浄化装置例の片側側面図で
ある。FIG. 2 is a side view on one side of an example of a cleaning device for carrying out the present invention.
１…冷却ドラム １ａ…冷却ドラム軸 ２…サイド堰 ３…押付装置 ４…湯溜まり部 ５…Ｎｏ．１ブラシロール ６…Ｎｏ．２ブラシロール ７…リニアベアリング ８…支持台 ９…ガイド溝 １０…Ｎｏ．１ブラシ喰い込み量調整用のシリンダー １１…Ｎｏ．２ブラシ喰い込み量調整用のシリンダー １２…ブラシ駆動用のモータ １３…テンションプーリー １４…ベルト Ｒ…溶融金属 Ｓ…鋳片 1 ... Cooling drum 1a ... Cooling drum shaft 2 ... Side weir 3 ... Pressing device 4 ... Hot water pool 5 ... No. 1 brush roll 6 ... No. 2 Brush roll 7 ... Linear bearing 8 ... Support base 9 ... Guide groove 10 ... No. 1 Cylinder for adjusting the amount of brush bite 11 ... No. 2 Cylinder for adjusting brush biting amount 12 ... Motor for driving brush 13 ... Tension pulley 14 ... Belt R ... Molten metal S ... Cast slab
───────────────────────────────────────────────────── フロントページの続き (72)発明者 浜田 和夫 山口県光市大字島田3434番地 新日本製鐵 株式会社光製鐵所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuo Hamada 3434 Shimada, Hikari-shi, Yamaguchi Prefecture Nippon Steel Corporation Hikari Works
Claims (2)
て湯溜まり部を形成し、該湯溜まり部に供給された溶融
金属を前記冷却ドラムの周面で冷却凝固しながら薄帯状
鋳片に連続鋳造する際に前記冷却ドラムの周面に付着し
た異物を前記冷却ドラム周面に接触可能なブラシロール
によって除去する方法において、鋳造初期においては素
線が鋼線であって且つ素線径：０．１５〜０．３０mmの
ブラシロールを用い、前記鋳造初期が経過した後におい
ては素線が鋼線であって且つ素線径：０．０５〜０．１
４mmであるか又は素線が銅合金線であるブラシロールを
用いることを特徴とする薄帯状鋳片鋳造用冷却ドラムの
清浄化方法。1. A pair of rotating cooling drums forms a molten metal pool portion on the peripheral surface, and the molten metal supplied to the molten metal pool portion is continuously solidified on the strip-shaped slab while cooling and solidifying on the peripheral surface of the cooling drum. In the method of removing foreign matters adhering to the peripheral surface of the cooling drum during casting with a brush roll capable of contacting the peripheral surface of the cooling drum, the wire is a steel wire and the wire diameter is 0 in the initial stage of casting. Using a brush roll of 0.15 to 0.30 mm, after the initial casting, the wire is a steel wire and the wire diameter is 0.05 to 0.1.
A method for cleaning a cooling drum for casting thin strip-shaped slabs, characterized in that a brush roll having a length of 4 mm or a wire of copper alloy wire is used.
て湯溜まり部を形成し、該湯溜まり部に供給された溶融
金属を前記冷却ドラムの周面で冷却凝固しながら薄帯状
鋳片に連続鋳造する装置において、前記冷却ドラムの周
面に接触可能でかつ前記冷却ドラムの軸と平行な位置に
回転軸を有する一対のブラシロールを近接して設け、前
記一対のブラシロールの幅は前記冷却ドラムの幅以上
で、かつ素線径：０．１５〜０．３０mmから成るブラシ
ロールと素線径：０．０５〜０．１４mmから成るブラシ
ロールで構成されることを特徴とする薄帯状鋳片鋳造用
冷却ドラムの清浄化装置。2. A molten metal supplied to the pool is continuously formed into a thin strip-shaped slab while cooling and solidifying the molten metal supplied to the pool with the circumferential surfaces of a pair of rotating cooling drums. In an apparatus for casting, a pair of brush rolls having a rotating shaft which is in contact with the peripheral surface of the cooling drum and has a rotating shaft in a position parallel to the shaft of the cooling drum are provided in proximity to each other, and the width of the pair of brush rolls is the cooling A thin strip casting characterized by comprising a brush roll having a diameter of 0.15 to 0.30 mm or more and a brush roll having a diameter of 0.05 to 0.14 mm, which is larger than the width of the drum. Cleaner for cooling drum for single casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18947995A JPH0929393A (en) | 1995-07-25 | 1995-07-25 | Method and device for cleaning cooling drum for casting thin strip slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18947995A JPH0929393A (en) | 1995-07-25 | 1995-07-25 | Method and device for cleaning cooling drum for casting thin strip slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0929393A true JPH0929393A (en) | 1997-02-04 |
Family
ID=16241957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18947995A Withdrawn JPH0929393A (en) | 1995-07-25 | 1995-07-25 | Method and device for cleaning cooling drum for casting thin strip slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0929393A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0965402A1 (en) * | 1998-06-17 | 1999-12-22 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Strip casting apparatus |
| KR100605677B1 (en) * | 1999-08-26 | 2006-07-31 | 주식회사 포스코 | Roll surface brushing method in sheet casting machine |
| KR100605699B1 (en) * | 2001-08-09 | 2006-08-01 | 주식회사 포스코 | Roll edge cleaning device of twin roll sheet casting machine |
| US7296614B2 (en) | 2004-12-13 | 2007-11-20 | Nucor Corporation | Method and apparatus for controlling the formation of crocodile skin surface roughness on thin cast strip |
| KR100838730B1 (en) * | 2006-12-19 | 2008-06-16 | 주식회사 포스코 | Performance Segment Cell Type Guide Roll Processing Equipment |
| US7891407B2 (en) | 2004-12-13 | 2011-02-22 | Nucor Corporation | Method and apparatus for localized control of heat flux in thin cast strip |
| US8312917B2 (en) | 2004-12-13 | 2012-11-20 | Nucor Corporation | Method and apparatus for controlling the formation of crocodile skin surface roughness on thin cast strip |
| US8316920B2 (en) | 2008-11-20 | 2012-11-27 | Nucor Corporation | Brush roll for casting roll |
| CN103419116A (en) * | 2013-07-18 | 2013-12-04 | 洛阳八佳电气科技股份有限公司 | Vacuum melting quick-solidification boiler water cooling copper rod automatic polishing device |
| WO2014047746A1 (en) * | 2012-09-27 | 2014-04-03 | 宝山钢铁股份有限公司 | Method and apparatus for cleaning twin-roller, thin band, continuous casting roller face |
| WO2018119551A1 (en) * | 2016-12-26 | 2018-07-05 | 宝山钢铁股份有限公司 | Casting roller surface cleaning device and method |
| JP2021502000A (en) * | 2017-11-03 | 2021-01-21 | フラウンホファー ゲゼルシャフト ツール フェルドルンク デル アンゲヴァントテン フォルシュンク エー ファウ | Electrical steel sheet manufactured by adhesive connection method of electrical steel sheet and corresponding method |
-
1995
- 1995-07-25 JP JP18947995A patent/JPH0929393A/en not_active Withdrawn
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0965402A1 (en) * | 1998-06-17 | 1999-12-22 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Strip casting apparatus |
| KR100605677B1 (en) * | 1999-08-26 | 2006-07-31 | 주식회사 포스코 | Roll surface brushing method in sheet casting machine |
| KR100605699B1 (en) * | 2001-08-09 | 2006-08-01 | 주식회사 포스코 | Roll edge cleaning device of twin roll sheet casting machine |
| US7891407B2 (en) | 2004-12-13 | 2011-02-22 | Nucor Corporation | Method and apparatus for localized control of heat flux in thin cast strip |
| US7299857B2 (en) | 2004-12-13 | 2007-11-27 | Nucor Corporation | Method and apparatus for localized control of heat flux in thin cast strip |
| US7296614B2 (en) | 2004-12-13 | 2007-11-20 | Nucor Corporation | Method and apparatus for controlling the formation of crocodile skin surface roughness on thin cast strip |
| US8312917B2 (en) | 2004-12-13 | 2012-11-20 | Nucor Corporation | Method and apparatus for controlling the formation of crocodile skin surface roughness on thin cast strip |
| KR100838730B1 (en) * | 2006-12-19 | 2008-06-16 | 주식회사 포스코 | Performance Segment Cell Type Guide Roll Processing Equipment |
| US8316920B2 (en) | 2008-11-20 | 2012-11-27 | Nucor Corporation | Brush roll for casting roll |
| WO2014047746A1 (en) * | 2012-09-27 | 2014-04-03 | 宝山钢铁股份有限公司 | Method and apparatus for cleaning twin-roller, thin band, continuous casting roller face |
| EP2902134A4 (en) * | 2012-09-27 | 2016-06-08 | Baoshan Iron & Steel | METHOD AND APPARATUS FOR CLEANING THE CONTINUOUS CASTING CYLINDER OF FINE BAND AND BETWEEN CYLINDERS |
| US9770756B2 (en) | 2012-09-27 | 2017-09-26 | Baoshan Iron & Steel Co., Ltd. | Method and device for cleaning a surface of a twin-roller continuous thin strip casting roller |
| CN103419116A (en) * | 2013-07-18 | 2013-12-04 | 洛阳八佳电气科技股份有限公司 | Vacuum melting quick-solidification boiler water cooling copper rod automatic polishing device |
| WO2018119551A1 (en) * | 2016-12-26 | 2018-07-05 | 宝山钢铁股份有限公司 | Casting roller surface cleaning device and method |
| JP2021502000A (en) * | 2017-11-03 | 2021-01-21 | フラウンホファー ゲゼルシャフト ツール フェルドルンク デル アンゲヴァントテン フォルシュンク エー ファウ | Electrical steel sheet manufactured by adhesive connection method of electrical steel sheet and corresponding method |
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Legal Events
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| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021001 |