JPH04147754A - Device for controlling molten steel stream in continuous casting equipment - Google Patents
Device for controlling molten steel stream in continuous casting equipmentInfo
- Publication number
- JPH04147754A JPH04147754A JP27235390A JP27235390A JPH04147754A JP H04147754 A JPH04147754 A JP H04147754A JP 27235390 A JP27235390 A JP 27235390A JP 27235390 A JP27235390 A JP 27235390A JP H04147754 A JPH04147754 A JP H04147754A
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- mold
- electromagnetic
- continuous casting
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 42
- 239000010959 steel Substances 0.000 title claims abstract description 42
- 238000009749 continuous casting Methods 0.000 title claims description 17
- 238000003756 stirring Methods 0.000 claims abstract description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 12
- 230000009189 diving Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005266 casting Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 230000005499 meniscus Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、介在物や気泡などに起因する鋳片欠陥を、注
入ノズルから吐出された溶鋼流を制御することによって
効果的に改善するための鋼の連続鋳造設備の溶鋼流制御
装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for effectively improving slab defects caused by inclusions and bubbles by controlling the flow of molten steel discharged from an injection nozzle. This invention relates to a molten steel flow control device for continuous steel casting equipment.
従来、鋼の連続鋳造にさいして注入ノズルのノズル詰ま
り対策のために吹き込まれる不活性ガスや、注入溶鋼中
に含まれている非金属介在物が注入溶鋼流によって鋳片
内部に深く巻き込まれることが問題となっており、特に
湾曲型連続鋳造設備では、いったん深く巻き込まれた不
活性ガス即ち気泡や、非金属介在物がメニスカス部まで
浮上することなく凝固殻内に捕らえられ、圧延後の鋼板
表面にスリバー等の欠陥となる問題が生じている。Conventionally, during continuous casting of steel, inert gas is blown into the injection nozzle to prevent nozzle clogging, and non-metallic inclusions contained in the injection molten steel are deeply entangled inside the slab by the injection molten steel flow. This has become a problem, especially in curved continuous casting equipment, where inert gas (air bubbles) and non-metallic inclusions that are deeply entrapped are trapped within the solidified shell without floating up to the meniscus, causing the steel plate to deteriorate after rolling. Problems such as slivers and other defects have occurred on the surface.
このような問題を解決する装置として、特開昭６３−１
１９９５９号公報には、第９図にしめすように連続鋳造
鋳型内の上部に電磁撹拌装置を配設し、下部に電磁ブレ
ーキ装置を配設することにより鋳型内溶鋼流を制御する
装置か開示されている。As a device to solve such problems, Japanese Patent Application Laid-Open No. 63-1
Publication No. 19959 discloses a device for controlling the flow of molten steel in the mold by disposing an electromagnetic stirring device in the upper part of the continuous casting mold and disposing an electromagnetic brake device in the lower part, as shown in Fig. 9. ing.
前述の装置により鋳片凝固殻内に捕らえられる気泡及び
介在物を低減させるためには、次のような問題を生じる
。In order to reduce the air bubbles and inclusions trapped in the solidified slab shell by the above-mentioned device, the following problems occur.
即ち、連続鋳造設備の鋳型の長さは、短すきると鋳型内
での凝固不足による鋳型出口でのブレークアウト発生の
原因となり、また長すぎると鋳型下部で冷却の不均一に
起因する鋳片復熱割れの原因となり、これらの問題が生
じないように適正な長さに決めなければならない。そし
て、一般にこの長さは約９００ ｍｍとされている。こ
の適正長さ約９００ ｍｍの中に電磁撹拌装置と電磁ブ
レーキ装置を共存させようとすると、設置スペース制約
のため十分な能力を有する装置の設置か不可能となる。In other words, if the length of the mold in continuous casting equipment is too short, it may cause breakout at the mold outlet due to insufficient solidification within the mold, and if it is too long, slab recovery may occur due to uneven cooling at the bottom of the mold. This can cause thermal cracking, and the length must be determined appropriately to avoid these problems. Generally, this length is about 900 mm. If an electromagnetic stirring device and an electromagnetic brake device are to coexist within this appropriate length of approximately 900 mm, it will be impossible to install a device with sufficient capacity due to installation space constraints.
さらに、相互の磁気干渉により単体能力の約半分となり
、全く実用に供しえないものとなる。より具体的に説明
すると、この磁気干渉を防止するためには、電磁撹拌装
置と電磁ブレーキ装置の設置距離を電磁撹拌装置および
電磁ブレーキ装置の各々の磁極間距離よりも大きくする
必要かある。Furthermore, due to mutual magnetic interference, the capacity of a single unit is reduced to about half, making it completely unusable. More specifically, in order to prevent this magnetic interference, it is necessary to make the installation distance between the electromagnetic stirring device and the electromagnetic brake device larger than the distance between the magnetic poles of each of the electromagnetic stirring device and the electromagnetic brake device.
従って、例えば２５０ｍｍ厚みの鋳片を鋳造する場合、
鋳型内電磁撹拌装置の磁極間距離は、磁極前面にある鋳
型銅板及び水箱の銅板取り付は板の厚み等により約４５
０ ｍｍと決定される。そうすると、電磁撹拌装置の磁
極下端と電磁ブレーキ装置の磁極上端の距離を４５０ｍ
ｍ以上としなければならず、各々の装置本体の大きさを
考慮すると、約９００ ｍｍ長さの鋳型の中に二つの装
置を設置することは実質的に不可能となる。Therefore, for example, when casting a slab with a thickness of 250 mm,
The distance between the magnetic poles of the in-mold electromagnetic stirring device is approximately 45 mm depending on the thickness of the mold copper plate in front of the magnetic pole and the copper plate of the water box.
It is determined to be 0 mm. Then, the distance between the lower end of the magnetic pole of the electromagnetic stirring device and the upper end of the magnetic pole of the electromagnetic brake device is 450 m.
m or more, and considering the size of each device body, it is virtually impossible to install two devices in a mold with a length of about 900 mm.
本発明の要旨は以下の通りである。 The gist of the invention is as follows.
一対の長辺壁と一対の短辺壁とよりなる長方形断面の連
続鋳造鋳型内に注入ノズルを用いて供給された溶鋼に移
動磁界により水平流動を生じさせる電磁撹拌装置を配設
し、該鋳型より下部の鋳片支持ロール部に鋳片幅全域に
静止磁界を作用させる電磁ブレーキ装置を配設したこと
を特徴とする連続鋳造設備の溶鋼流制御装置。An electromagnetic stirring device is installed in a continuous casting mold with a rectangular cross section consisting of a pair of long side walls and a pair of short side walls to create horizontal flow in the molten steel supplied using an injection nozzle using a moving magnetic field. A molten steel flow control device for continuous casting equipment, characterized in that an electromagnetic brake device for applying a static magnetic field to the entire width of the slab is disposed on a lower slab supporting roll portion.
連続鋳造鋳型内の電磁撹拌装置と、該鋳型より下部に配
設した電磁ブレーキ装置との間に、相互の磁気干渉を防
止する銅板を設けたことを特徴とする前記連続鋳造設備
の溶鋼流制御装置。Molten steel flow control in the continuous casting equipment, characterized in that a copper plate is provided between the electromagnetic stirring device in the continuous casting mold and the electromagnetic brake device disposed below the mold to prevent mutual magnetic interference. Device.
電磁ブレーキ装置の磁極、鉄芯に鋳片案内用ロールを設
けたことを特徴とする前記連続鋳造設備の溶鋼流制御装
置。A molten steel flow control device for continuous casting equipment as described above, characterized in that a slab guiding roll is provided on the magnetic pole and iron core of an electromagnetic brake device.
鋳片案内用ロールが磁性体からなることを特徴とする前
記連続鋳造設備の溶鋼流制御装置。The molten steel flow control device for continuous casting equipment as described above, wherein the slab guiding roll is made of a magnetic material.
本発明は、鋳型内に電磁撹拌装置を配設し、鋳型下部の
鋳片支持ロール部に電磁ブレーキ装置を配設したことか
ら相互の磁気干渉による磁束の減衰が防止でき、電磁撹
拌装置による溶鋼撹拌及び電磁ブレーキ装置による溶鋼
制動を効果的に行うことができる。また、従来は第９図
に示すように鋳片幅全域に作用する電磁ブレーキをかけ
ていないので乱流が生じ、均一な流速低下は望めなかっ
たが、本発明では鋳片支持ロール部で鋳片幅全域に作用
する磁場のブレーキ効果により注入ノズルからの溶鋼流
速が低下させられ、かつ、均一流速が得られる。In the present invention, an electromagnetic stirring device is provided in the mold, and an electromagnetic brake device is provided in the slab support roll at the bottom of the mold, so that it is possible to prevent magnetic flux from attenuating due to mutual magnetic interference. Stirring and braking of molten steel using an electromagnetic brake device can be effectively performed. In addition, as shown in Fig. 9, in the past, an electromagnetic brake that applied to the entire width of the slab was not applied, resulting in turbulent flow and it was not possible to reduce the flow velocity uniformly. Due to the braking effect of the magnetic field acting over the entire width, the flow velocity of the molten steel from the injection nozzle is reduced and a uniform flow velocity is obtained.
電磁撹拌装置の下部に銅板を設ければ、電磁撹拌装置か
ら電磁ブレーキ装置への磁束のパスが防がれ、電磁ブレ
ーキ装置の直流磁束への電磁撹拌装置の交流磁束の悪影
響が防止できる。さらに、電磁ブレーキ装置の磁極、鉄
芯に鋳片案内用ロールを設ければ、鋳型直下でのロール
による鋳片支持を最適なロール間隔で行うことが可能と
なる。Providing a copper plate at the bottom of the electromagnetic stirring device prevents the magnetic flux from passing from the electromagnetic stirring device to the electromagnetic brake device, thereby preventing the adverse effect of the alternating current magnetic flux of the electromagnetic stirring device on the direct current magnetic flux of the electromagnetic brake device. Furthermore, by providing slab guiding rolls on the magnetic poles and iron cores of the electromagnetic brake device, it becomes possible to support the slab directly under the mold with the rolls at an optimum distance between the rolls.
このロールの材質を磁性体とすれば、相、対向する磁極
間に発生する磁束密度が、この二つの磁極間距離によっ
て決められる磁束密度よりも実質大きいものとなる。即
ち、実質磁極間距離が短縮されたと同様の効果が得られ
る。If this roll is made of a magnetic material, the magnetic flux density generated between the opposing magnetic poles will be substantially larger than the magnetic flux density determined by the distance between these two magnetic poles. In other words, the same effect as when the actual distance between magnetic poles is shortened can be obtained.
次に、図面に基いて一実施例について説明する。 Next, one embodiment will be described based on the drawings.
第１図は本発明の溶鋼流制御装置の説明図、第２図は電
磁撹拌装置の鋳型との関係を示す模式図、第３図は電磁
ブレーキ装置と鋳片支持ロールとの関係を示す模式図、
第４図は本発明の構造を示す縦断面図、第５図は第４図
の側面図（断面Ａ−Ａ）、第６図は第４図の断面Ｂ−Ｂ
図、第７図及び第８図は電磁ブレーキ装置の磁極、鉄芯
へのロール取り付けの詳細を示す図である。Fig. 1 is an explanatory diagram of the molten steel flow control device of the present invention, Fig. 2 is a schematic diagram showing the relationship between the electromagnetic stirring device and the mold, and Fig. 3 is a schematic diagram showing the relationship between the electromagnetic brake device and the slab support roll. figure,
FIG. 4 is a longitudinal cross-sectional view showing the structure of the present invention, FIG. 5 is a side view (section A-A) of FIG. 4, and FIG. 6 is a cross-section B-B of FIG. 4.
7 and 8 are diagrams showing details of the attachment of the roll to the magnetic pole and iron core of the electromagnetic brake device.
第１図において、電磁撹拌装置９は鋳型ｌ内に、電磁ブ
レーキ装置１５は鋳型１より下部にそれぞれ設けられて
いる。注入ノズル３３からの溶鋼流３４の短辺銅板６ａ
、６ｂでの衝突反転流３７は、電磁撹拌装置９の移動磁
界により発生する溶鋼の移動４５により減速され、溶鋼
湯面近傍での非金属介在物の捕捉、および下方への潜り
込みが回避される。下降流３８は、電磁ブレーキ装置１
５の位置で制動され、均一下降流となる。In FIG. 1, an electromagnetic stirring device 9 is provided within a mold 1, and an electromagnetic brake device 15 is provided below the mold 1. Short side copper plate 6a of molten steel flow 34 from injection nozzle 33
, 6b is decelerated by the movement 45 of the molten steel generated by the moving magnetic field of the electromagnetic stirrer 9, thereby avoiding trapping of non-metallic inclusions near the molten steel surface and preventing them from penetrating downward. . The downward flow 38 is the electromagnetic brake device 1
It is braked at position 5, resulting in a uniform downward flow.
第２図において、電磁撹拌装置９は鋳型１の長辺水箱３
ａ、３ｂ内に収納され、鋳片４０の幅にほぼ均しい長さ
の磁極４１と巻線４２を有し、移動磁界を生ずる構造と
なっている。In FIG. 2, the electromagnetic stirring device 9 is connected to the water box 3 on the long side of the mold 1.
a, 3b, and has a magnetic pole 41 and a winding wire 42 having a length approximately equal to the width of the slab 40, and has a structure that generates a moving magnetic field.
第３図において、電磁ブレーキ装置１５は、鋳片４０の
幅よりも長い磁極２１とこれに巻かれた巻線４３、Ｎ極
とＳ極を結ぶヨーク２２により鋳片４０を包囲して直流
による静止磁界を生ずる構造となっている。In FIG. 3, the electromagnetic brake device 15 surrounds the slab 40 with a magnetic pole 21 that is longer than the width of the slab 40, a winding 43 wound around the magnetic pole, and a yoke 22 that connects the north and south poles. It has a structure that generates a static magnetic field.
次に、第４図から第８図に基いて具体的に構造を説明す
る。Next, the structure will be specifically explained based on FIGS. 4 to 8.
鋳型ｌは、バックプレート２ａ、２ｂを有する長辺水箱
３ａ、 ３ｂと長辺銅板４ａ、４ｂと、短辺バックプレ
ートｓａ、５ｂと短辺鋳板６ａ、 ６ｂを所定の位置に
調整し、鋳片幅を設定する幅調整装置７と、短辺銅板６
ａ、 ６ｂを鋳造中に強固に長辺銅板４ａ、４ｂ間に挟
持するためのタイロッド８とからなっている。電磁撹拌
装置９は長辺水箱３ａ、 ３ｂの背面開口部に収納され
、電磁撹拌装置支持板１０と長辺水箱３ａ、 ３ｂのフ
ランジ部をホルト１２で締結することにより固定される
。この電磁撹拌装置収納部１３の下部には磁気干渉防止
用の銅板１４が電磁ブレーキ装置１５の磁極２１の長さ
に等しい範囲に設けられ、ボルト１１により長辺水箱３
ａ、 ３ｂに固定される。電磁撹拌装置収納部１３には
電磁撹拌装置９及び１４の冷却水が給、排水されるよう
に配管が接続される。１７は電磁撹拌装置９の配線接続
用端子箱であり、１８ａ、 １８ｂ。The mold 1 is made by adjusting the long side water boxes 3a, 3b having back plates 2a, 2b, the long side copper plates 4a, 4b, the short side back plates sa, 5b, and the short side casting plates 6a, 6b to predetermined positions, and then casting. Width adjustment device 7 for setting one width and short side copper plate 6
It consists of a tie rod 8 for firmly holding the copper plates 4a and 6b between the long side copper plates 4a and 4b during casting. The electromagnetic stirring device 9 is housed in the rear opening of the long side water boxes 3a, 3b, and is fixed by fastening the electromagnetic stirring device support plate 10 and the flange portions of the long side water boxes 3a, 3b with bolts 12. A copper plate 14 for preventing magnetic interference is provided in the lower part of the electromagnetic stirring device storage part 13 in an area equal to the length of the magnetic pole 21 of the electromagnetic brake device 15, and the long side water box 3 is connected by bolts 11.
a, fixed at 3b. Pipes are connected to the electromagnetic stirring device storage section 13 so that cooling water for the electromagnetic stirring devices 9 and 14 is supplied and drained. 17 is a terminal box for wiring connection of the electromagnetic stirring device 9, and 18a and 18b.
１９ａ、 １９ｂは鋳型冷却水の通水路、２０は鋳型を
搭載、支持する鋳型振動テーブルである。電磁ブレーキ
装置１５は磁極２１とヨーク２２から成り、これらはタ
イロッド２３とナツト２４により締結され、一体化され
る。一体組み立てされ矩形状を成す電磁ブレーキ装置１
５はサポートロールフレーム２５にボルト２６により固
定され、鋳型１の下部、そしてサポートロール群２７の
上部に位置する。鋳型１の下部にはフットロール２８が
取り付けられ、サポートロールフレーム２５にも同様に
鋳片支持のためのロール２９が多数取り付けられている
。そして、このフットロール２８とロール２９間で鋳片
を支持するためのロール３０ａ、 ３０ｂが最適なロー
ル間隔でブラケット３１ａ、３１ｂを介して電磁ブレー
キ装置１５の磁極２１にボルト３２により取り付けられ
る。このロール３０ａ。19a and 19b are mold cooling water passages, and 20 is a mold vibration table on which the mold is mounted and supported. The electromagnetic brake device 15 consists of a magnetic pole 21 and a yoke 22, which are fastened together by a tie rod 23 and a nut 24 to be integrated. Electromagnetic brake device 1 that is integrally assembled and has a rectangular shape
5 is fixed to the support roll frame 25 with bolts 26 and is located at the bottom of the mold 1 and above the support roll group 27. A foot roll 28 is attached to the lower part of the mold 1, and a large number of rolls 29 for supporting the slab are similarly attached to the support roll frame 25. Then, rolls 30a and 30b for supporting the slab between the foot roll 28 and the roll 29 are attached to the magnetic pole 21 of the electromagnetic brake device 15 with bolts 32 via brackets 31a and 31b at an optimal roll interval. This roll 30a.
３０ｂは電磁ブレーキ装置１５の対向する磁極間距離を
最小とすべく極力小さなロール径とすることが望ましく
、そのため小径化によるロールの撓みを少なくするため
に分割ロールとすることか好ましい。また、ブラケット
３１ａ、３１ｂ及びロール３０ａ。It is desirable that the roll diameter of the roll 30b is as small as possible in order to minimize the distance between the opposing magnetic poles of the electromagnetic brake device 15, and therefore, it is preferable to use a split roll to reduce deflection of the roll due to the reduction in diameter. Also, brackets 31a, 31b and roll 30a.
３０ｂは対向する磁極間での磁束のパスか更に効率的に
行われる様に、磁性体用いるのか好ましい。30b is preferably made of a magnetic material so that the magnetic flux passes between the opposing magnetic poles more efficiently.
本発明は、下記の効果を奏する。 The present invention has the following effects.
電磁撹拌装置と電磁ブレーキ装置との相互の磁気干渉に
よる磁束の減衰か防止でき、電磁撹拌装置による溶鋼撹
拌及び電磁ブレーキ装置による溶鋼制動を効果的に行う
ことかできる。その結果、鋳型内にて注入ノズルからの
溶鋼流を撹拌することかできるので、鋳型内凝固殻の界
面で強制的に溶鋼流を生じさせることにより非金属介在
物の捕捉防止が出来る。また、撹拌によりメニスカス部
での溶鋼流速か低減され、これにより溶鋼中非金属介在
物の下方への潜り込みが回避される。これらにより、鋼
板における品質異常発生率も著しく改善される。Attenuation of magnetic flux due to mutual magnetic interference between the electromagnetic stirring device and the electromagnetic brake device can be prevented, and molten steel can be effectively stirred by the electromagnetic stirring device and molten steel can be braked by the electromagnetic brake device. As a result, it is possible to stir the molten steel flow from the injection nozzle within the mold, and by forcibly generating the molten steel flow at the interface of the solidified shell within the mold, it is possible to prevent the capture of non-metallic inclusions. In addition, the stirring reduces the flow rate of the molten steel in the meniscus portion, thereby preventing nonmetallic inclusions in the molten steel from penetrating downward. These also significantly improve the incidence of quality abnormalities in steel sheets.
電磁撹拌による溶鋼流の発生により凝固殻の均一な成長
が促進され、鋳片の縦割れ発生率か低減する。The generation of molten steel flow by electromagnetic stirring promotes uniform growth of the solidified shell, reducing the incidence of vertical cracking in slabs.
鋳片支持ロール部で鋳片幅全域に作用する磁場のブレー
キ効果により注入ノズルからの溶鋼流速が低下させられ
、鋳片内の気泡や非金属介在物の量が著しく減少する。The braking effect of the magnetic field acting across the entire width of the slab at the slab support roll reduces the flow velocity of the molten steel from the injection nozzle, significantly reducing the amount of air bubbles and nonmetallic inclusions in the slab.
電磁撹拌装置の下部に銅板を設ければ、電磁ブレーキ装
置の直流磁束への電磁撹拌装置の交流磁束の悪影響が防
止できる。By providing a copper plate at the bottom of the electromagnetic stirring device, it is possible to prevent the adverse effect of the alternating current magnetic flux of the electromagnetic stirring device on the direct current magnetic flux of the electromagnetic brake device.
電磁ブレーキ装置の磁極、鉄芯に鋳片案内用ロールを設
ければ、鋳片バルジング起因の割れ発生の懸念が全くな
くなる。さらにこのロールの材質を磁性体とすれば、実
質磁極間距離が短縮されたと同様の効果が得られる。前
述の実施例の場合、２５０ｍｍ厚みの鋳片で磁極間距離
６３０ｎ＋ｍにおいて、約１０％の磁束密度の向上が得
られた。By providing slab guiding rolls on the magnetic poles and iron cores of the electromagnetic brake device, there is no fear of cracks occurring due to slab bulging. Furthermore, if this roll is made of a magnetic material, the same effect as that of shortening the distance between the magnetic poles can be obtained. In the case of the above-mentioned example, an improvement in magnetic flux density of about 10% was obtained when the magnetic pole distance was 630 n+m using a slab having a thickness of 250 mm.
第１図は本発明の溶鋼流制御装置の説明図、第２図は電
磁撹拌装置の鋳型との関係を示す模式図、第３図は電磁
ブレーキ装置と鋳片支持ロールとの関係を示す模式図、
第４図は本発明の構造を示す縦断面図、第５図は第４図
の側面図（断面Ａ−Ａ）、第６図は第４図の断面Ｂ−Ｂ
図、第７図及び第８図は電磁ブレーキ装置の磁極、鉄芯
へのロール取り付けの詳細を示す図、第９図は従来技術
を示す図である。
ｌ・・・鋳型、２ａ、 ２ｂ・・・バックプレート、３
ａ、 ３ｂ・・・長辺水箱、４ａ、 ４ｂ・・・長辺銅
板、５ａ、 ５ｂ・・・短辺バックプレート、６ａ、
６ｂ・・・短辺銅板、７・・・幅調整装置、８・・・タ
イロッド、９・・・電磁撹拌装置、１０・・・電磁撹拌
装置支持板、１１・・・ボルト、１２・・・ボルト、１
３・・・電磁撹拌装置収納部、１４・・・銅板、１５・
・・電磁ブレーキ装置、１７ ・・・配線接続用端子箱
、１８ａ、 １８ｂ、 １９ａ。
１９ ｂ・・・通水路、２０・・・鋳型振動テーブル、
２１・・・磁極、２２・・・ヨーク、２３・・・タイロ
ッド、２４・・・ナツト、２５・・・サポートロールフ
レーム、２６・・・ボルト、２７・・・サポートロール
群、２８・・・フットロール、２９・・・ロール、３０
ａ、 ３０ｂ−ｏ−ル、３１ａ、 ３１ｂ・・・ブラケ
ット、３２・・・ボルト、３３・・・注入ノズル、３４
・・・溶鋼流、３６・・・均一下降流、３７・・・衝突
反射流、３８・・・下降流、４０・・・鋳片、４１・・
・磁極、４２・・・巻線、４３・・・巻線、４４・・・
メニスカス、４５・・・移動磁界による溶鋼の移動方向
。
第１
図
才２図
第３図
、７１′９図
（ａ）
（ｂン
Ｖ２ Ｖ／
ｔFig. 1 is an explanatory diagram of the molten steel flow control device of the present invention, Fig. 2 is a schematic diagram showing the relationship between the electromagnetic stirring device and the mold, and Fig. 3 is a schematic diagram showing the relationship between the electromagnetic brake device and the slab support roll. figure,
Fig. 4 is a longitudinal sectional view showing the structure of the present invention, Fig. 5 is a side view (section A-A) of Fig. 4, and Fig. 6 is a cross-section B-B of Fig. 4.
7 and 8 are diagrams showing details of the attachment of the roll to the magnetic pole and iron core of the electromagnetic brake device, and FIG. 9 is a diagram showing the prior art. l... Mold, 2a, 2b... Back plate, 3
a, 3b... Long side water box, 4a, 4b... Long side copper plate, 5a, 5b... Short side back plate, 6a,
6b... Short side copper plate, 7... Width adjustment device, 8... Tie rod, 9... Electromagnetic stirring device, 10... Electromagnetic stirring device support plate, 11... Bolt, 12... bolt, 1
3... Electromagnetic stirring device storage section, 14... Copper plate, 15.
...Electromagnetic brake device, 17 ...Terminal box for wiring connection, 18a, 18b, 19a. 19 b... Water passage, 20... Mold vibration table,
21... Magnetic pole, 22... Yoke, 23... Tie rod, 24... Nut, 25... Support roll frame, 26... Bolt, 27... Support roll group, 28... Foot roll, 29... roll, 30
a, 30b-o-le, 31a, 31b...bracket, 32...bolt, 33...injection nozzle, 34
... Molten steel flow, 36 ... Uniform downward flow, 37 ... Collision reflected flow, 38 ... Downflow, 40 ... Slab, 41 ...
・Magnetic pole, 42... winding, 43... winding, 44...
Meniscus, 45... Direction of movement of molten steel due to a moving magnetic field. Figure 1 Figure 2 Figure 3, Figure 71'9 (a) (b-V2 V/t
Claims (4)
面の連続鋳造鋳型内に注入ノズルを用いて供給された溶
鋼に移動磁界により水平流動を生じさせる電磁撹拌装置
を配設し、該鋳型より下部の鋳片支持ロール部に鋳片幅
全域に静止磁界を作用させる電磁ブレーキ装置を配設し
たことを特徴とする連続鋳造設備の溶鋼流制御装置。(1) An electromagnetic stirring device is installed in a continuous casting mold with a rectangular cross section consisting of a pair of long side walls and a pair of short side walls, which causes horizontal flow by a moving magnetic field in molten steel supplied using an injection nozzle. A molten steel flow control device for continuous casting equipment, characterized in that an electromagnetic brake device for applying a static magnetic field to the entire width of the slab is disposed on a slab support roll portion below the mold.
部に配設した電磁ブレーキ装置との間に、相互の磁気干
渉を防止する銅板を設けたことを特徴とする請求項１記
載の連続鋳造設備の溶鋼流制御装置。(2) A copper plate is provided between the electromagnetic stirring device in the continuous casting mold and the electromagnetic brake device disposed below the mold to prevent mutual magnetic interference. Molten steel flow control device for continuous casting equipment.
ールを設けたことを特徴とする請求項１記載の連続鋳造
設備の溶鋼流制御装置。(3) The molten steel flow control device for continuous casting equipment according to claim 1, characterized in that an electromagnetic brake, a magnetic pole of the device, and a slab guiding roll are provided on the iron core.
する請求項３記載の連続鋳造設備の溶鋼流制御装置。(4) The molten steel flow control device for continuous casting equipment according to claim 3, wherein the slab guiding roll is made of a magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27235390A JPH04147754A (en) | 1990-10-12 | 1990-10-12 | Device for controlling molten steel stream in continuous casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27235390A JPH04147754A (en) | 1990-10-12 | 1990-10-12 | Device for controlling molten steel stream in continuous casting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04147754A true JPH04147754A (en) | 1992-05-21 |
Family
ID=17512697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27235390A Pending JPH04147754A (en) | 1990-10-12 | 1990-10-12 | Device for controlling molten steel stream in continuous casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04147754A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177317A (en) * | 1992-01-07 | 1993-07-20 | Nippon Steel Corp | Continuous casting method and device therefor |
| EP0707909A1 (en) * | 1994-03-29 | 1996-04-24 | Nippon Steel Corporation | Method of controlling flow in casting mold by using dc magnetic field |
| JP2020175416A (en) * | 2019-04-18 | 2020-10-29 | 日本製鉄株式会社 | Mold arrangement and method of continuous casting |
-
1990
- 1990-10-12 JP JP27235390A patent/JPH04147754A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177317A (en) * | 1992-01-07 | 1993-07-20 | Nippon Steel Corp | Continuous casting method and device therefor |
| EP0707909A1 (en) * | 1994-03-29 | 1996-04-24 | Nippon Steel Corporation | Method of controlling flow in casting mold by using dc magnetic field |
| EP0707909A4 (en) * | 1994-03-29 | 1997-10-29 | Nippon Steel Corp | Method of controlling flow in casting mold by using dc magnetic field |
| JP2020175416A (en) * | 2019-04-18 | 2020-10-29 | 日本製鉄株式会社 | Mold arrangement and method of continuous casting |
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