JPH04361856A - Twin belt type continuous casting apparatus - Google Patents
Twin belt type continuous casting apparatusInfo
- Publication number
- JPH04361856A JPH04361856A JP13495691A JP13495691A JPH04361856A JP H04361856 A JPH04361856 A JP H04361856A JP 13495691 A JP13495691 A JP 13495691A JP 13495691 A JP13495691 A JP 13495691A JP H04361856 A JPH04361856 A JP H04361856A
- Authority
- JP
- Japan
- Prior art keywords
- belts
- mold
- continuous casting
- pair
- short side
- 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.)
- Granted
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、圧下される鋳片の短辺
の凝固シエルの破裂を防止するようにした双ベルト式連
続鋳造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twin-belt continuous casting apparatus which prevents the solidified shell on the short side of a slab being rolled from bursting.
【０００２】0002
【従来の技術】双ベルト式連続鋳造装置においては、鋳
造された鋳片を完全凝固未完の時期に鋳片の板厚方向に
圧下し、板厚を減じ、また鋳片内質の改善を図っている
。[Prior Art] In a twin-belt continuous casting machine, a cast slab is rolled down in the thickness direction of the slab before it is completely solidified to reduce the thickness and improve the internal quality of the slab. ing.
【０００３】図５は前記の双ベルト式連続鋳造装置の概
略を示す側面図、図６は図５のＶＩ−ＶＩ断面図、図７
は不完全凝固状態の鋳片を圧下した場合の説明図である
。FIG. 5 is a side view schematically showing the twin-belt continuous casting apparatus, FIG. 6 is a sectional view taken along line VI-VI in FIG. 5, and FIG.
1 is an explanatory diagram when a slab in an incompletely solidified state is rolled down.
【０００４】図５及び図６に示すように、トッププーリ
４２、ドライブプーリ４３、及びテンションプーリ４４
に巻回してエンドレスに回転し相対する部分が一定の間
隔をおいて下降する１対のベルト４１，４１と、エンド
レスに連結され、双方のベルト４１，４１の相対して下
降する部分に挟持されて下降して回転し前記１対のベル
ト４１，４１間の間隔より広い間隔を形成する一対の短
辺ブロック４６，４６とで形成する長方形断面のモール
ドに、ノズル４５から溶湯５３を連続して供給し、凝固
させた鋳片５１を下方から引出す。As shown in FIGS. 5 and 6, a top pulley 42, a drive pulley 43, and a tension pulley 44
A pair of belts 41, 41 are wound around the belt and rotated endlessly, and the opposing parts descend at a constant interval. The molten metal 53 is continuously poured from the nozzle 45 into a mold having a rectangular cross section formed by a pair of short side blocks 46, 46 which are rotated and descended from each other to form a gap wider than the gap between the pair of belts 41, 41. The supplied and solidified slab 51 is pulled out from below.
【０００５】この鋳片５１を図示しない冷却装置によっ
て冷却しながら複数のガイドローラ４７によって水平方
向に湾曲させ、対をなす圧下ロール４８，４８によって
ベルト４１に接した鋳片５１の長辺を圧下してその板厚
を減少させる。The slab 51 is cooled by a cooling device (not shown) and curved horizontally by a plurality of guide rollers 47, and the long sides of the slab 51 in contact with the belt 41 are rolled down by a pair of rolling rolls 48, 48. to reduce its thickness.
【０００６】[0006]
【発明が解決しようとする課題】前記の従来の双ベルト
式連続鋳造装置では、水平方向に湾曲させて圧下ロール
４８に供給された鋳片５１は、図７に示すように、完全
に凝固していなくて、凝固シエル５１ａの内部に溶湯５
３が残留している。このため、圧下ロール４８によって
鋳片５１の長辺を圧下すると、凝固シエル５１ａの短辺
に、その板厚減小に応じた圧縮を受けると共に、凝固シ
エル５１ａの内部の溶湯５３の圧力が上昇し、図７に示
すように、鋳片５１の短辺が凸状に突出してその凝固シ
エル５１ａに引張応力が作用し、この凝固シエル５１ａ
が破裂して溶湯５３が流出する等のトラブルが発生する
。[Problems to be Solved by the Invention] In the conventional twin-belt continuous casting apparatus described above, the slab 51 that is curved in the horizontal direction and supplied to the reduction roll 48 is completely solidified as shown in FIG. There is no molten metal 5 inside the solidified shell 51a.
3 remain. Therefore, when the long side of the slab 51 is rolled down by the reduction roll 48, the short side of the solidified shell 51a is compressed in accordance with the decrease in thickness, and the pressure of the molten metal 53 inside the solidified shell 51a increases. However, as shown in FIG. 7, the short side of the slab 51 protrudes in a convex shape, and tensile stress acts on the solidified shell 51a.
Troubles such as rupture and the molten metal 53 flowing out may occur.
【０００７】本発明は、上記課題を解決するために提案
されたものであり、内部に溶湯が残留した不完全凝固状
態で鋳片を圧下しても、その短辺の凝固シエルが破裂し
て溶湯が流出することのない鋳片を鋳造することが可能
な双ベルト式連続鋳造装置を提供することを目的とする
。The present invention was proposed to solve the above problem, and even if the slab is rolled down in an incompletely solidified state with molten metal remaining inside, the solidified shell on the short side will rupture. An object of the present invention is to provide a twin-belt continuous casting device capable of casting slabs without molten metal flowing out.
【０００８】[0008]
【課題を解決するための手段】本発明は、相対する部分
が一定の間隔を形成して下降する１対のベルトと、この
１対のベルト双方の前記相対する部分と接触して下降し
前記１対のベルトの相対する部分間の間隔より広い間隔
をその間に形成する１対の短辺ブロックとから成る長方
形断面のモールド、及びこのモールドで連続して鋳造し
た鋳片の長辺を不完全凝固の状態で圧下する圧下装置と
を具備した双ベルト式連続鋳造装置において、前記モー
ルドの移動壁となる前記短辺ブロックの溶湯と接する表
面に移動方向に連続した凸部を設けた。[Means for Solving the Problems] The present invention provides a pair of belts whose opposing portions descend with a constant interval, and a pair of belts whose opposing portions come into contact with the opposing portions of both belts and descend. A mold with a rectangular cross section consisting of a pair of short side blocks forming a gap between them that is wider than the gap between the opposing parts of a pair of belts, and a mold with a rectangular cross section that is made of a mold that is continuously cast in this mold. In a twin-belt continuous casting apparatus equipped with a rolling down device that rolls down the mold in a solidified state, a convex portion that is continuous in the moving direction is provided on the surface of the short side block that is in contact with the molten metal and serves as a moving wall of the mold.
【０００９】[0009]
【作用】本発明では、相対する部分が一定の間隔を形成
して下降する１対のベルトとこの１対のベルト双方の前
記相対する部分と接触して下降する１対の短辺ブロック
とから成る長方形断面のモールドに溶湯を供給して凝固
させ、短辺ブロックの凸部によって、長方形断面の鋳片
の短辺表面にその長さ方向に沿って溝状の凹部を形成し
た鋳片を連続鋳造し、この鋳片のベルトに接した面であ
る長辺を不完全凝固状態で圧下装置によって圧下して板
厚を減小させる。[Operation] The present invention comprises a pair of belts whose opposing portions descend with a constant interval and a pair of short side blocks which descend by contacting the opposing portions of both of the pair of belts. The molten metal is supplied to a mold with a rectangular cross section and solidified, and the convex part of the short side block forms a continuous slab with a groove-like recess formed on the short side surface of the slab with a rectangular cross section along its length. The slab is cast, and the long side of the slab, which is the surface in contact with the belt, is rolled down in an incompletely solidified state using a rolling down device to reduce the plate thickness.
【００１０】この圧下時に、完全に凝固していない鋳片
の内部に残留する溶湯の圧力が上昇して鋳片の短辺表面
を膨ませようとするが、鋳片の短辺表面には溝状の凹部
が形成されているために、その凹部には圧縮応力が作用
し、凝固シエルが膨張して破裂することがない。During this reduction, the pressure of the molten metal remaining inside the slab, which has not completely solidified, increases and tries to swell the short side surface of the slab, but grooves are formed on the short side surface of the slab. Since the shaped recess is formed, compressive stress acts on the recess, and the solidified shell does not expand and burst.
【００１１】[0011]
【実施例】以下、本発明の一実施例を図面によって具体
的に説明する。図１は本実施例に係る双ベルト式連続鋳
造装置の概略を示す側面図、図２は図１のＩＩ−ＩＩ断
面図、図３は本実施例による短辺ブロックの凸部を示す
断面図、図４は本実施例による不完全凝固状態の鋳片を
圧下した場合の説明図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a side view schematically showing a twin-belt continuous casting apparatus according to this embodiment, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a sectional view showing a convex portion of a short side block according to this embodiment. , FIG. 4 is an explanatory view when a slab in an incompletely solidified state is rolled down according to this embodiment.
【００１２】本実施例は、図５に示す双ベルト式連続鋳
造装置と同型式の双ベルト式連続鋳造装置に係るもので
あって、図１において、同一の部分には図５におけると
同一の符号を付し、その説明を省略する。This embodiment relates to a twin-belt continuous casting apparatus of the same type as the twin-belt continuous casting apparatus shown in FIG. 5, and the same parts in FIG. Reference numerals are given and explanations thereof are omitted.
【００１３】図１において、双方のベルト４１，４１の
相対して下降する両端部に挟持されて下降しエンドレス
に連結されてベルト４１，４１と同期して回転する短辺
ブロック６，６の溶湯３と接する（モールドの短辺移動
壁となる）面には、その移動方向に連続する凸部６ａが
形成されている。In FIG. 1, the molten metal of short-side blocks 6, 6 descends while being held by the oppositely descending ends of both belts 41, 41, and is connected endlessly and rotates in synchronization with the belts 41, 41. A convex portion 6a that is continuous in the direction of movement is formed on the surface that is in contact with 3 (which becomes the short side moving wall of the mold).
【００１４】この凸部６ａは、図３に示すように、その
幅ａは鋳片短辺ｂよりも小さくて、その高さδは鋳片１
の圧下条件によって必要最小限にとどめてある。As shown in FIG. 3, this convex portion 6a has a width a smaller than the short side b of the slab, and a height δ of the slab 1.
It is kept to the necessary minimum due to the rolling reduction conditions.
【００１５】以上のように構成された本実施例では、双
方のベルト４１，４１及び短辺ブロック６，６を回転さ
せ、これらの部材で形成する長方形断面のモールドに溶
湯３を連続して供給し、凝固させた鋳片１を下方から引
出す。この鋳片１の両短辺は、図２及び図４に示すよう
に、短辺ブロック６の凸部６ａによって、長さ方向に溝
状の凹部１ｂが成形されている。In this embodiment configured as described above, both belts 41, 41 and short side blocks 6, 6 are rotated, and molten metal 3 is continuously supplied to a mold having a rectangular cross section formed by these members. Then, the solidified slab 1 is pulled out from below. As shown in FIGS. 2 and 4, groove-shaped recesses 1b are formed in the longitudinal direction of both short sides of the slab 1 by the convex portions 6a of the short side blocks 6.
【００１６】この鋳片１を図示しない冷却装置によって
冷却しながら、図１に示すように、ガイドローラ４７に
よって水平方向に湾曲させ、不完全凝固状態で圧下ロー
ル４８によって鋳片１の長辺を圧下して、その板厚を減
小する。この圧下によって、鋳片１内の圧力が上昇し、
未凝固の溶湯３によって鋳片１の両短辺の凝固シエル１
ａを押出そうとするが、この両短辺には凹部１ｂが設け
てあるので、図４に示すように、圧縮応力が作用し、凝
固シエル１ａが破裂することが無い。While this slab 1 is cooled by a cooling device (not shown), it is bent horizontally by guide rollers 47 as shown in FIG. Roll down to reduce the thickness of the plate. Due to this reduction, the pressure inside the slab 1 increases,
Solidified shells 1 on both short sides of slab 1 are formed by unsolidified molten metal 3.
However, since the concave portions 1b are provided on both short sides, compressive stress acts on the solidified shell 1a, as shown in FIG. 4, and the solidified shell 1a does not rupture.
【００１７】[0017]
【発明の効果】以上、詳細に説明したように、本発明で
は、双ベルト式連続鋳造装置において、長方形断面のモ
ールドの短辺移動壁となる短辺ブロックの表面に移動方
向に連続した凸部を設け、鋳片の短辺に長さ方向に沿っ
た溝状の凹部を形成することにより、この鋳片の長辺を
完全凝固していない状態で圧下すると、鋳片の凹状短辺
に圧縮応力が作用するので、凝固シエルが破裂して溶湯
が流出することを防止することができる。As described in detail above, in the present invention, in a twin-belt continuous casting apparatus, a convex portion continuous in the moving direction is formed on the surface of the short side block which becomes the short side moving wall of the mold having a rectangular cross section. By forming a groove-like recess along the length direction on the short side of the slab, when the long side of the slab is rolled down before it is completely solidified, the concave short side of the slab is compressed. Since stress is applied, it is possible to prevent the solidified shell from bursting and the molten metal from flowing out.
【図１】本発明の一実施例としての双ベルト連続鋳造装
置の概略を示す側面図である。FIG. 1 is a side view schematically showing a twin-belt continuous casting apparatus as an embodiment of the present invention.
【図２】図１のＩＩ−ＩＩ断面図である。FIG. 2 is a sectional view taken along line II-II in FIG. 1;
【図３】同実施例による短辺ブロックの凸部を示す断面
図である。FIG. 3 is a sectional view showing a convex portion of a short side block according to the same embodiment.
【図４】本実施例による不完全凝固状態の鋳片を圧下し
た場合の説明図である。FIG. 4 is an explanatory diagram when the incompletely solidified slab according to the present example is rolled down.
【図５】従来の双ベルト式連続鋳造装置の一例の概略を
示す側面図である。FIG. 5 is a side view schematically showing an example of a conventional twin-belt continuous casting apparatus.
【図６】図５のＶＩ−ＶＩ断面図である。FIG. 6 is a sectional view taken along VI-VI in FIG. 5;
【図７】図５及び図６で示す双ベルト式連続鋳造装置で
鋳造した不完全凝固状態の鋳片を圧下した場合の説明図
である。FIG. 7 is an explanatory diagram of the case where an incompletely solidified slab cast by the twin-belt continuous casting apparatus shown in FIGS. 5 and 6 is rolled down.
１ 鋳片 １ａ 凝固シエル １ｂ 短片凹部 ３ 溶湯 ６ 短辺ブロック ６ａ 凸部 ４１ ベルト ４８ 圧下ロール 1 Slab 1a Coagulation shell 1b Short piece recess 3 Molten metal 6 Short side block 6a Convex part 41 Belt 48 Reducing roll
Claims (1)
下降する１対のベルトと、この１対のベルト双方の前記
相対する部分と接触して下降し前記１対のベルトの相対
する部分間の間隔より広い間隔をその間に形成する１対
の短辺ブロックとから成る長方形断面のモールド、及び
このモールドで連続して鋳造した鋳片の長辺を不完全凝
固の状態で圧下する圧下装置とを具備した双ベルト式連
続鋳造装置において、前記モールドの移動壁となる前記
短辺ブロックの溶湯と接する表面に移動方向に連続した
凸部を設けて成ることを特徴とする双ベルト式連続鋳造
装置。Claims: 1. A pair of belts whose opposing parts descend with a constant interval; and an opposing part of the pair of belts which descends in contact with the opposing parts of both of the pair of belts. A mold with a rectangular cross section consisting of a pair of short side blocks forming a gap between them that is wider than the distance between them, and a rolling device that rolls down the long sides of slabs continuously cast in this mold in an incompletely solidified state. A twin-belt continuous casting apparatus comprising a twin-belt continuous casting device, characterized in that a convex portion continuous in the moving direction is provided on a surface of the short side block that is in contact with the molten metal and serves as a moving wall of the mold. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13495691A JP2865900B2 (en) | 1991-06-06 | 1991-06-06 | Twin belt type continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13495691A JP2865900B2 (en) | 1991-06-06 | 1991-06-06 | Twin belt type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04361856A true JPH04361856A (en) | 1992-12-15 |
| JP2865900B2 JP2865900B2 (en) | 1999-03-08 |
Family
ID=15140507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13495691A Expired - Fee Related JP2865900B2 (en) | 1991-06-06 | 1991-06-06 | Twin belt type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2865900B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500370A (en) * | 2018-11-12 | 2019-03-22 | 包头钢铁（集团）有限责任公司 | A kind of method of novel Wide and Thick Slab casting machine pressure control dynamic soft-reduction |
-
1991
- 1991-06-06 JP JP13495691A patent/JP2865900B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500370A (en) * | 2018-11-12 | 2019-03-22 | 包头钢铁（集团）有限责任公司 | A kind of method of novel Wide and Thick Slab casting machine pressure control dynamic soft-reduction |
| CN109500370B (en) * | 2018-11-12 | 2020-12-22 | 包头钢铁（集团）有限责任公司 | Method for controlling dynamic soft reduction by pressure of wide and thick plate casting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2865900B2 (en) | 1999-03-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19981124 |
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| LAPS | Cancellation because of no payment of annual fees |