JPH0411289B2 - - Google Patents
Info
- Publication number
- JPH0411289B2 JPH0411289B2 JP15504688A JP15504688A JPH0411289B2 JP H0411289 B2 JPH0411289 B2 JP H0411289B2 JP 15504688 A JP15504688 A JP 15504688A JP 15504688 A JP15504688 A JP 15504688A JP H0411289 B2 JPH0411289 B2 JP H0411289B2
- Authority
- JP
- Japan
- Prior art keywords
- side plate
- short side
- refractory
- casting
- short
- 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
Links
- 238000005266 casting Methods 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000009749 continuous casting Methods 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 238000007711 solidification Methods 0.000 description 8
- 230000008023 solidification Effects 0.000 description 8
- 239000011819 refractory material Substances 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/066—Side dams
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は溶融金属から薄鋳片を直接製造する
薄鋳片連続鋳造機における鋳造空間を１対の循環
体とともに形成する短辺側板に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a short side plate that forms a casting space together with a pair of circulating bodies in a continuous thin slab casting machine that directly produces thin slabs from molten metal.
（従来の技術）
溶融金属（以下は「溶鋼」の例で説明する）か
ら直接シートバーの如き薄鋳片を連続的に製造す
る連続鋳造機（すなわちベルトキヤスター）とし
て、最近種々の形式のものが提案されている。第
２図にその代表的な一例を示す。例示の同期式ベ
ルトキヤスターは、絞り込み方式のもので、所定
の距離にわたつて溶鋼や凝固シエル等の鋳造材料
を保持するための間〓を維持しつつ、それぞれ複
数個のガイドロール３ａ，３ｂ，３ｃを介して輪
回移動する対向配置とした１対の長辺面を支持す
る金属ベルト１，２と、それら両金属ベルト相互
間にあつて各々の側縁近傍で緊密に接している短
辺面を支持するための上広下すぼまり状の短辺側
板４，５とで４方を限局して鋳造空間とするしく
みになつている。(Prior Art) Recently, various types of continuous casting machines (i.e., belt casters) have been used to continuously produce thin slabs such as sheet bars directly from molten metal (the following will be explained using the example of "molten steel"). something is proposed. Figure 2 shows a typical example. The illustrated synchronous belt caster is of a narrowing type, and has a plurality of guide rolls 3a, 3b, respectively, while maintaining a distance for holding casting material such as molten steel or solidified shell over a predetermined distance. , 3c, the metal belts 1 and 2 support a pair of long sides arranged opposite each other, and the short sides that are in close contact near the respective side edges between the two metal belts. The casting space is formed by confining the casting space on four sides with upper and lower concave short side plates 4 and 5 for supporting the surface.
該鋳造空間に浸漬ノズル６から溶鋼を給湯する
と、冷却パツド７ａ，７ｂによつて冷却された金
属ベルト１，２に接触した溶鋼は凝固殻を形成し
ながら下方に引き抜かれる。 When molten steel is supplied into the casting space from the immersion nozzle 6, the molten steel that comes into contact with the metal belts 1 and 2 cooled by the cooling pads 7a and 7b is drawn downward while forming a solidified shell.
ここで短辺面での凝固を遅らせるため、短辺側
板の溶鋼に接する内面を耐火物で形成することが
有利であり、特開昭58−218360号公報には金属ベ
ルトと接する側縁に額縁部をそなえる金属板に、
耐火物を額縁部で支持させて設けた短辺側板につ
いて開示されている。 In order to delay solidification on the short sides, it is advantageous to form the inner surfaces of the short side plates in contact with the molten steel with a refractory material. The metal plate with the
A short side plate is disclosed in which a refractory is supported by a frame portion.
（発明が解決しようとする課題）
短辺側板中央部の耐火物面では溶鋼の凝固がな
いことが好ましいが、耐火物面での溶鋼の凝固を
完全に防止することは難しい。というのは鋳造空
間内に供給される溶鋼が低温度の場合や耐火物面
付近の溶鋼流速が遅くなつた場合には溶鋼から耐
火物面への熱伝達により耐火物面上で凝固シエル
が発達するからである。そして十分にに厚くなつ
た凝固シエルは短辺側板の額縁部上で生成したシ
エルあるいは長辺シエルにより捕捉され下方に引
き込まれるがこの時耐火物面上で生じたシエル
（額縁部上に生じた短辺シエルの量をも含む）が
最終鋳片厚より厚く成長すると楔状になる。楔状
のシエルはその強度が低い時は容易に潰し込まれ
るが、強度が高い時は長辺側の金属ベルトが外側
に押し出されベルトと短辺側間に〓間が生じこの
〓間に溶鋼が侵入して地金差し込みをまねく。い
ずれにせよ短辺側板は拘束され金属ベルトのみが
移動し短辺側板直下におけるブレークアウトやベ
ルト破断に至る重大な操業障害となる。また生成
したシエルが短辺面を下降する時、短辺にかき疵
が生じ短辺寿命を短かくすることも問題である。(Problem to be Solved by the Invention) Although it is preferable that there is no solidification of molten steel on the refractory surface at the center of the short side plate, it is difficult to completely prevent solidification of molten steel on the refractory surface. This is because if the temperature of the molten steel supplied into the casting space is low or the flow velocity of the molten steel near the refractory surface is slow, a solidification shell will develop on the refractory surface due to heat transfer from the molten steel to the refractory surface. Because it does. The solidified shell that has become sufficiently thick is captured by the shell generated on the frame of the short side plate or the long side shell and pulled downward, but at this time, the shell generated on the refractory surface (the shell formed on the frame) When the thickness (including the amount of short side shell) grows thicker than the final thickness of the slab, it becomes wedge-shaped. A wedge-shaped shell is easily crushed when its strength is low, but when its strength is high, the metal belt on the long side is pushed outward, creating a gap between the belt and the short side, and molten steel flows between this gap. Infiltrate and cause bullion insertion. In any case, the short side plate is restrained and only the metal belt moves, resulting in a serious operational failure leading to breakout or belt breakage directly below the short side plate. Another problem is that when the formed shell moves down the short side surface, scratches occur on the short side, shortening the life of the short side.
一方特開昭58−218356号公報には耐火物内に発
熱体を埋めて耐火物を積極的に加熱する、耐火物
面での凝固を防止する上で有効な手段について開
示されているが、コスト高および感電などの災害
をまねくおそれがあるところに問題が残る。 On the other hand, Japanese Patent Application Laid-Open No. 58-218356 discloses an effective means for preventing solidification on the surface of the refractory, which involves burying a heating element within the refractory and actively heating the refractory. Problems remain in that the cost is high and there is a risk of causing disasters such as electric shock.
この発明は、耐火物面での溶鋼の凝固を回避し
得る短辺側板について提案することを目的とす
る。 An object of the present invention is to propose a short side plate that can avoid solidification of molten steel on the refractory surface.
（課題を解決するための手段）
この発明は、一定の距離にわたつて溶融金属を
保持するための間〓を維持しつつ循環する１対の
対向配置にかかる循環体と、それら循環体相互間
の両側縁部に位置させた１対の上広下すぼまり形
状になる短辺側板とで鋳造空間を構成する薄鋳片
連続鋳造機の短辺側板において、上記循環体と接
する両側縁に形成した額縁部と、この額縁部間で
支持される耐火物とをそなえ、耐火物は鋳造空間
側へ略三角形状に隆起し高さが鋳片引抜き方向へ
漸次に減少する山脈上の突出部を構成してなる薄
鋳片連続鋳造機の短辺側板である。(Means for Solving the Problems) The present invention provides a pair of circulating bodies disposed facing each other that circulate while maintaining a gap for holding molten metal over a certain distance, and Formed on both side edges in contact with the circulating body in the short side plate of the thin slab continuous casting machine, which constitutes a casting space with a pair of short side side plates having a concave shape with an upper width and lower width located on both side edges of the thin slab continuous casting machine. The refractory has a protruding part on a mountain range that protrudes toward the casting space side in a substantially triangular shape and whose height gradually decreases in the slab drawing direction. This is a short side plate of a thin slab continuous casting machine constructed of the following configuration.
また実施に当り、短辺側板の鋳造空間に対する
面における耐火物を除く部分は、鋳造空間が鋳片
引抜き方向へ狭くなる傾きのテーパを有すること
が有利に適合する。 Further, in practice, it is advantageous that the portion of the short side plate facing the casting space excluding the refractory has a taper such that the casting space narrows in the direction of drawing the slab.
（作用）
この発明に従う短辺側板は、耐火物を溶鋼側へ
突出させることによつて凝固シエルの形状が楔様
になつてもその楔形が容易に潰れる形状の鋳造空
間とし、また耐火物の突出部の水平断面を略三角
形状にし凝固シエルが下方に引き込まれる際に多
発する短辺側板の傷付きを回避し、さらに突出部
中央の突起（水平断面における略三角形の頂角）
によつて溶鋼流が突出部に当つた際に短辺側板中
央部での凝固シエル生成を防止して楔の発生を阻
止し得るため、安定した連続鋳造を実現する。(Function) The short side plate according to the present invention provides a casting space in which even if the shape of the solidified shell becomes wedge-like by causing the refractory to protrude toward the molten steel, the wedge shape is easily crushed, and the refractory is The horizontal cross section of the protruding part is made approximately triangular to avoid damage to the short side plate that occurs frequently when the solidified shell is drawn downward, and the protrusion at the center of the protruding part (approximately triangular apex angle in horizontal cross section)
This prevents the formation of a solidified shell at the center of the short side plate when the molten steel flow hits the protrusion, thereby preventing the formation of a wedge, thereby realizing stable continuous casting.
また短辺側板の耐火物を除く面に鋳造空間が鋳
片引抜き方向へ狭くなる傾きテーパを付与したも
のは、額縁部で成長した凝固シエルと短辺側板と
の〓間を最小限に抑え溶鋼の侵入によりバリの発
生を防止するのに有利である。 In addition, the surface of the short-side side plate excluding the refractory material has an inclined taper that narrows the casting space in the direction of slab withdrawal. This is advantageous in preventing the occurrence of burrs due to intrusion.
（実施例） 第１図にこの発明に従う短辺側板を示す。(Example) FIG. 1 shows a short side plate according to the present invention.
図中８は両側縁に額縁部９をそなえる側板本
体、１０は額縁部９にて支持される耐火物よりな
る突出部、そして１１は冷却水などが循環する冷
媒通路である。 In the figure, reference numeral 8 denotes a side plate main body having a frame portion 9 on both side edges, 10 a protrusion made of refractory material supported by the frame portion 9, and 11 a refrigerant passage through which cooling water and the like circulate.
突出部１０は、その水平断面が三角形状に隆起
しかつ、Ａ−ＡおよびＢ−Ｂ断面図に示すよう
に、高さが鋳片引抜き方向（下方）へ漸次に減少
する山脈状に形成されてなる。したがつて突出部
１０には、Ｃ−Ｃ断面図に示すように、鋳片引抜
き方向へδ1／l1の正テーパが付与されることにな
る。一方この突出部１０を除く側板本体８の溶鋼
と接する面は、Ｃ−Ｃ断面図に示すように、鋳片
引抜き方向へ凝固シエルの長辺側の収縮量に見合
うδ2／l2の逆テーパを付与してある。 The protrusion 10 has a raised triangular horizontal section and is formed in the shape of a mountain range whose height gradually decreases in the slab drawing direction (downward), as shown in the AA and BB sectional views. It becomes. Therefore, the protruding portion 10 is given a positive taper of δ 1 /l 1 in the slab drawing direction, as shown in the CC sectional view. On the other hand, the surface of the side plate main body 8 excluding the protrusion 10 that contacts the molten steel is the opposite of δ 2 /l 2 corresponding to the amount of contraction on the long side of the solidified shell in the slab drawing direction, as shown in the C-C sectional view. It has been given a taper.
なお額縁部９は冷媒通路１１内を流れる冷却水
により表面が十分に冷却され、高強度および高熱
伝導度に保持されており、ここで溶鋼は冷却され
て凝固シエルが生成する。ここで第１図の短辺側
板で構成した鋳造空間は短辺の中央と額縁部とに
おけるテーパが逆になつているため、凝固シエル
が短辺面からのはく離によつて生じる楔効果に起
因したブレークアウトまたは鋳片表面の欠陥は解
消される。 The surface of the frame portion 9 is sufficiently cooled by the cooling water flowing in the refrigerant passage 11 and maintained at high strength and high thermal conductivity, and the molten steel is cooled here to form a solidified shell. Here, in the casting space formed by the short side side plates in Figure 1, the taper at the center of the short side and the frame part is reversed, so the solidification shell is caused by a wedge effect caused by peeling off from the short side surface. Any breakouts or defects on the surface of the slab are eliminated.
次にこの発明に従う短辺側板を用いた連続鋳造
について、具体的に説明する。 Next, continuous casting using short side plates according to the present invention will be specifically explained.
第２図のベルトキヤスターに、第１図の短辺側
板を用い、低炭素アルミキルド鋼を鋳造速度12
ｍ／minで厚さ30mm、幅1200mmの鋳片に鋳造し
た。 Using the belt caster shown in Fig. 2 with the short side plate shown in Fig. 1, cast low carbon aluminum killed steel at a casting speed of 12
A slab with a thickness of 30 mm and a width of 1200 mm was cast at m/min.
なお短辺側板の突出部は溶融シリカ質のレンガ
で形成し、また第１図のＣ−Ｃ断面図における各
寸法は下記の通りであつた。 The protruding portions of the short side plates were made of fused siliceous bricks, and the dimensions in the cross-sectional view taken along line CC in FIG. 1 were as follows.
記
l1＝65cm
l2＝100cm
δ1＝35mm
δ2＝12mm
かかる条件で１ヒート（600ｍ）の連続鋳造を
行つたところ、常時安定した操業となり、凝固シ
エルの破断がなかつたことから得られた鋳片の表
面性状も良好であつた。 Note: l 1 = 65 cm l 2 = 100 cm δ 1 = 35 mm δ 2 = 12 mm Continuous casting for one heat (600 m) was performed under these conditions, and the operation was always stable and the solidified shell did not break. The surface properties of the cast slabs were also good.
（発明の効果）
この発明によれば、耐火物面での溶融金属の凝
固を防ぎ、よつて鋳造継続長の増長および安定鋳
造を実現し、また得られる鋳片の表面性状の改善
も達成できる。(Effects of the Invention) According to the present invention, it is possible to prevent solidification of molten metal on the refractory surface, thereby achieving an increase in continuous casting length and stable casting, and also achieving improvement in the surface properties of the obtained slab. .
第１図はこの発明に従う短辺側板を示す説明
図、第２図はベルトキヤスターほ説明図である。
１，２……金属ベルト、３ａ，３ｂ，３ｃ……
ガイドロール、４，５……短辺側板、６……浸漬
ノズル、７ａ，７ｂ……冷却パツド、８……側板
本体、９……額縁部、１０……突出部、１１……
冷媒通路。
FIG. 1 is an explanatory view showing a short side plate according to the present invention, and FIG. 2 is an explanatory view of a belt caster. 1, 2...metal belt, 3a, 3b, 3c...
Guide roll, 4, 5...Short side plate, 6...Immersion nozzle, 7a, 7b...Cooling pad, 8...Side plate main body, 9...Frame part, 10...Protrusion part, 11...
Refrigerant passage.
Claims (1)
めの間〓を維持しつつ循環する１対の対向配置に
かかる循環体と、それら循環体相互間の両側縁部
に位置させた１対の上広下すぼまり形状になる短
辺側板とで鋳造空間を構成する薄鋳片連続鋳造機
の短辺側板において、 上記循環体と接する両側縁に形成した額縁部
と、この額縁部間で支持される耐火物とをそな
え、耐火物は鋳造空間側へ略三角形状に隆起し高
さが鋳片引抜き方向へ漸次に減少する山脈状の突
出部を構成してなる薄鋳片連続鋳造機の短辺側
板。 ２ 短辺側板の鋳造空間に対する面における耐火
物を除く部分は、鋳造空間が鋳片引抜き方向へ狭
くなる傾きのテーパを有する特許請求の範囲第１
項に記載の短辺側板。[Scope of Claims] 1. A pair of circulating bodies arranged opposite each other, which circulate while maintaining a gap for holding molten metal over a certain distance, and positions on both side edges between the circulating bodies. In the short-side side plate of a continuous thin slab casting machine, which constitutes a casting space with a pair of short-side side plates that have a concave shape with an upper width and lower width, The thin casting is equipped with a refractory supported between the frame parts, and the refractory constitutes a mountain-like protrusion that protrudes toward the casting space in a substantially triangular shape and whose height gradually decreases in the direction of slab withdrawal. Short side plate of single continuous casting machine. 2. The part of the short side plate facing the casting space excluding the refractory has a taper such that the casting space narrows in the slab drawing direction.
Short side side plate as described in section.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15504688A JPH01321047A (en) | 1988-06-24 | 1988-06-24 | Short side plate in cast strip continuous casting machine |
| EP89306400A EP0348227B1 (en) | 1988-06-24 | 1989-06-23 | Side wall construction for continuous belt caster |
| CA 603755 CA1325875C (en) | 1988-06-24 | 1989-06-23 | Side wall construction for continuous belt caster |
| DE8989306400T DE68906312T2 (en) | 1988-06-24 | 1989-06-23 | LIMITING WALL FOR CONTINUOUS CASTING PLANTS. |
| US07/704,895 US5127462A (en) | 1988-06-24 | 1991-05-21 | Side wall construction for continuous belt caster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15504688A JPH01321047A (en) | 1988-06-24 | 1988-06-24 | Short side plate in cast strip continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01321047A JPH01321047A (en) | 1989-12-27 |
| JPH0411289B2 true JPH0411289B2 (en) | 1992-02-28 |
Family
ID=15597490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15504688A Granted JPH01321047A (en) | 1988-06-24 | 1988-06-24 | Short side plate in cast strip continuous casting machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH01321047A (en) |
| CA (1) | CA1325875C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101360691B1 (en) * | 2012-02-17 | 2014-02-10 | 주식회사 포스코 | twin roll strip caster |
-
1988
- 1988-06-24 JP JP15504688A patent/JPH01321047A/en active Granted
-
1989
- 1989-06-23 CA CA 603755 patent/CA1325875C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA1325875C (en) | 1994-01-11 |
| JPH01321047A (en) | 1989-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0411289B2 (en) | ||
| JPH03114632A (en) | Short side plate in cast strip continuous casting machine | |
| JPH0316216B2 (en) | ||
| JPS63126650A (en) | Twin roll type thin sheet directly continuous casting apparatus | |
| JPH0275450A (en) | Side plate at short side in thin ingot continuous casting machine | |
| JPS5838640A (en) | Continuous casting device for thin metal sheet | |
| JPS6326244A (en) | Stationary short side for continuous casting of thin ingot | |
| JPH01284463A (en) | Short wall side plate for continuous casting machine for cast strip | |
| JPH01162545A (en) | Short side plate for strip continuous casting machine | |
| EP0735931B1 (en) | Method and apparatus for twin belt casting | |
| JPH0519163Y2 (en) | ||
| JPH0328991Y2 (en) | ||
| JPS58218349A (en) | Stationary side plate of continuous casting device of thin steel plate | |
| JPH01317659A (en) | Twin roll type continuous casting apparatus | |
| JPH01150439A (en) | Twin belt type continuous casting machine | |
| JPH0519165Y2 (en) | ||
| JP2808633B2 (en) | Continuous casting mold and control method thereof | |
| KR100333069B1 (en) | Method for uniformly cooling cast slab in twin roll strip caster | |
| JPH02142648A (en) | Cast strip continuous casting machine | |
| JPH01293955A (en) | Mold for continuously casting cast strip | |
| CA1047731A (en) | Molds for continuous casting | |
| JPS63252649A (en) | Continuous casting machine for thin cast sheet | |
| KR100356176B1 (en) | Cooling roll for twin roll sheet casting machine | |
| JPH044062B2 (en) | ||
| JPH0438503B2 (en) |