JPH0330458B2 - - Google Patents
Info
- Publication number
- JPH0330458B2 JPH0330458B2 JP59005686A JP568684A JPH0330458B2 JP H0330458 B2 JPH0330458 B2 JP H0330458B2 JP 59005686 A JP59005686 A JP 59005686A JP 568684 A JP568684 A JP 568684A JP H0330458 B2 JPH0330458 B2 JP H0330458B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- cooling water
- wall
- cooling
- molten metal
- 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 - Lifetime
Links
- 239000000498 cooling water Substances 0.000 claims description 49
- 239000002184 metal Substances 0.000 claims description 39
- 238000005192 partition Methods 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 22
- 230000003068 static effect Effects 0.000 claims description 20
- 238000009749 continuous casting Methods 0.000 claims description 16
- 230000005499 meniscus Effects 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 description 9
- 238000000465 moulding Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B22D11/0677—Accessories therefor for guiding, supporting or tensioning the casting belts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、傾斜形又は垂直形ベルト式連続鋳造
機に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an inclined or vertical belt type continuous casting machine.
（従来の技術）
近年、圧延の合理化の一環として、例えば、ホ
ツトストリツプミルに供給する被圧延材（スラ
ブ）をホツトストリツプ製品厚さに、より近く薄
肉化することにより、粗圧延工程を含む大幅な圧
延工程の省略並びに省エネルギー効果が期待され
ている。このため、種々の形式の金属薄板連続鋳
造機が提案されているが、ここでは主として双ベ
ルト式連続鋳造機（ベルトキヤスタ）に関連して
以下述べる。(Prior art) In recent years, as part of the rationalization of rolling, for example, the material to be rolled (slab) supplied to a hot strip mill has been thinned closer to the thickness of the hot strip product, including the rough rolling process. It is expected to significantly omit the rolling process and save energy. For this reason, various types of continuous metal sheet casting machines have been proposed, but the following description will mainly be made in relation to a twin belt type continuous casting machine (belt caster).
第３図及び第４図は、従来の双ベルト式連続鋳
造機におけるモールド装置の概念図であり、第３
図は側面断面図であり、第４図は第３図のＢ−Ｂ
矢視図である。モールド装置１は、テンシヨンプ
ーリ２，２′、ドライブプーリ３，３′、ステアリ
ングプーリ４，４′、スチールベルト５，５′及び
ベルト冷却装置６の主要部材で構成されている。
各ベルト５，５′は、上記のプーリにエンドレス
に捲装され、動力駆動装置（図示せず）でドライ
ブプーリ３，３′を回転させて２つのベルトを矢
印の方向に周期的に回動する。ベルト５，５′は、
鋳片７の厚さＴに相当する間〓を置いて走行可能
にし、該間〓部のベルト幅方向の両端部には一対
の短辺モールドを配設して鋳型を形成する。この
鋳型には、タンデイツシユ９から溶融金属（以下
溶湯という）１０が供給され、ベルト背面を冷却
することにより、鋳型内に凝固シエルを形成し、
金属薄板の鋳片７を連続的に鋳造し、モールド装
置１下方の多数のガイドロール１１及びピンチロ
ール（図示せず）を介して次の工程に導出するよ
うに構成されている。 Figures 3 and 4 are conceptual diagrams of a molding device in a conventional twin-belt continuous casting machine.
The figure is a side cross-sectional view, and Figure 4 is B-B in Figure 3.
It is an arrow view. The molding device 1 is composed of main members: tension pulleys 2, 2', drive pulleys 3, 3', steering pulleys 4, 4', steel belts 5, 5', and a belt cooling device 6.
Each belt 5, 5' is endlessly wound around the above-mentioned pulley, and a power drive device (not shown) rotates the drive pulley 3, 3' to periodically rotate the two belts in the direction of the arrow. do. Belts 5, 5' are
A gap corresponding to the thickness T of the slab 7 is left in place to allow the belt to run, and a pair of short-side molds are disposed at both ends of the gap in the belt width direction to form a mold. Molten metal (hereinafter referred to as molten metal) 10 is supplied to this mold from a tundish 9, and by cooling the back surface of the belt, a solidified shell is formed in the mold,
The cast piece 7 of a thin metal plate is continuously cast and is configured to be led to the next step via a large number of guide rolls 11 and pinch rolls (not shown) below the molding device 1.
上記のモールド装置には、噴流式冷却器と密閉
式冷却器とが従来より使用されている。 Conventionally, jet coolers and closed coolers have been used in the above-mentioned molding apparatus.
従来の噴流式冷却器は、第３図及び第４図に示
すように、テンシヨンプーリ２，２′の外周に多
数の環状溝１２を軸方向に並設し、各溝１２には
噴流管１３を捲着し、ヘツダ１４からの冷却水を
高速で前記ベルト５，５′の背面（溶湯と接触す
る面の反対側の面）に噴流させて溶湯１０を冷却
し、冷却後の冷却水は下方のスクープ１５ですく
い取られ、適宜戻り管路１６へ回収される。 As shown in FIGS. 3 and 4, the conventional jet cooler has a large number of annular grooves 12 arranged in parallel in the axial direction on the outer periphery of the tension pulleys 2 and 2', and each groove 12 has a jet tube. 13, the cooling water from the header 14 is jetted at high speed onto the back surface of the belts 5, 5' (the surface opposite to the surface in contact with the molten metal) to cool the molten metal 10, and the cooling water after cooling is is scooped up by the lower scoop 15 and appropriately collected into the return line 16.
また、テンシヨンプーリ２，２′とドライブプ
ーリ３，３′間のベルト５，５′の垂直面には、軸
方向に多数のデイスクフイン１７ａを有する複数
個のフインロール１７，１７′を上下方向に並設
し、かつ、回転自在に基台１８に軸持されると共
に、ベルト背面に当接するように配設し、運転
中、該ベルト５，５′面に作用する溶湯の静圧力
に対抗してベルトを支持する。また、上下のフイ
ンロール１７，１７′間には、ベルト幅方向に並
列した多数の噴流管１９を有する冷却水ヘツダ２
０と噴流案内板２１ａ，２１ｂを設置し、該案内
板下面に沿つてベルト５，５′背面に向けて冷却
水を高速で吹き付けて冷却すると共に、該案内板
の上面はスクープ１５を形成している。上記の噴
流管１３及び１９からの冷却水の大半はスクープ
１５で回収されるが、残りのものはベルト５，
５′に沿つて流下する。下部のドライブプーリ３，
３′も、上記テンシヨンプーリ２，２′と同様の環
状溝２２を有しており、ベルト背面と協動して流
下水を戻り管路２３へ導入回収される。 Further, on the vertical plane of the belts 5, 5' between the tension pulleys 2, 2' and the drive pulleys 3, 3', a plurality of fin rolls 17, 17' having a large number of disc fins 17a in the axial direction are installed in the vertical direction. and are rotatably supported by the base 18, and are arranged so as to abut against the back surface of the belt, and resist the static pressure of the molten metal acting on the surfaces of the belts 5 and 5' during operation. to support the belt. Also, between the upper and lower fin rolls 17, 17', there is a cooling water header 2 having a large number of jet pipes 19 arranged in parallel in the belt width direction.
0 and jet guide plates 21a and 21b are installed, and cooling water is sprayed at high speed toward the back of the belts 5 and 5' along the lower surface of the guide plates for cooling, and the upper surface of the guide plates forms a scoop 15. ing. Most of the cooling water from the jet pipes 13 and 19 is collected by the scoop 15, but the rest is collected by the belt 5,
5'. Lower drive pulley 3,
3' also has an annular groove 22 similar to the tension pulleys 2, 2', and cooperates with the back surface of the belt to introduce and collect the flowing water into the return pipe 23.
しかし、この噴流式冷却器は、冷却水が噴流式
であるため、ベルト背面に作用する押圧力は比較
的低く、その結果、溶湯１０の静圧が低くいメニ
スカス近傍２４では、該溶湯静圧によるベルト面
の押圧力を越えないように冷却水圧力（速度）を
溶湯に調整することができるが、メニスカス近傍
２４より下方の比較的溶湯静圧の高い鋳造区域
（斜線部分）２５は、ベルト押圧力に対抗しうる
圧力を冷却水で確保することが難しく、しばしば
該押圧力以下となる。その結果、該部のベルト
５，５′が外側（背面側）へ膨らみ鋳片７がバル
ジングを起こしたり、状況によつてはその表面に
クラツクが生ずる等表面品質を低下させ、特には
ブレークアウトによる運転休止等の極めて重大な
事故を発生する等の欠点があつた。 However, in this jet cooler, since the cooling water is a jet type, the pressing force acting on the back surface of the belt is relatively low.As a result, in the vicinity of the meniscus 24 where the static pressure of the molten metal 10 is low, The cooling water pressure (velocity) can be adjusted to the molten metal so as not to exceed the pressing force on the belt surface due to the belt surface. It is difficult to secure a pressure with cooling water that can counteract the pressing force, and the pressure is often lower than the pressing force. As a result, the belts 5, 5' in this area bulge outward (back side), causing bulging of the slab 7, and depending on the situation, cracks may occur on the surface, deteriorating the surface quality, and especially breakout. However, there were drawbacks such as the occurrence of very serious accidents such as suspension of operation.
一方、従来の密閉式冷却器を第５〜７図により
説明する。第５図は側面断面図であり、第６図は
第５図の部分拡大図であり、第７図は第５図のＣ
−Ｃ矢視図である。この冷却器は、テンシヨンプ
ーリ２，２′とドライブプーリ３，３′間のベルト
５，５′の垂直部背面に少なくとも鋳片全幅を覆
う一対の密閉状箱形冷却パツド２６，２６′を対
向して基台（図示せず）に固設する。冷却パツド
２６，２６′はベルト側の壁２７と、所定の高さ
（例えば数mm）に突出した水平隔壁２８ａと突出
しない中間隔壁２８ｂによつて上下方向に複数室
（第５図の場合は２９ａ，２９ｂ，３０ａ，３０
ｂ，３１ａ，３１ｂの６室）に仕切られ、各室の
反ベルト壁３２には、上から順に交互に冷却水排
出管３４と供給管３３を接続し、ベルト側の壁２
７には水平隔壁２８ａの上端縁又は下端縁の傾斜
面に沿つてベルト幅方向に沿びるスリツト３６，
３７を設け、各室の下部スリツトを冷却水の供給
口とし、上部スリツト３６を排出口としている。
さらに、上記壁２７のベルト側表面には多数の縦
隔壁３８をベルト幅方向に並設し、所定の高さ
（例えば数mm程度）に突設し、かつ、該縦隔壁３
８の先端を上記水平隔壁２８ａの先端とともにベ
ルト５，５′の背面に当接することにより、ベル
ト面と壁２７間に断面矩形状の溝３９ａ，３９
ｂ，３９ｃを形成し、上記２つのスリツトの間の
冷却水通路を構成する。 On the other hand, a conventional hermetic cooler will be explained with reference to FIGS. 5 to 7. Fig. 5 is a side sectional view, Fig. 6 is a partially enlarged view of Fig. 5, and Fig. 7 is a C of Fig. 5.
-C arrow view. This cooler has a pair of closed box-shaped cooling pads 26, 26' covering at least the entire width of the slab on the back of the vertical part of the belts 5, 5' between the tension pulleys 2, 2' and the drive pulleys 3, 3'. They are fixed to a base (not shown) facing each other. The cooling pads 26, 26' are divided into a plurality of chambers in the vertical direction (in the case of FIG. 5 29a, 29b, 30a, 30
cooling water discharge pipes 34 and supply pipes 33 are connected alternately from above to the anti-belt wall 32 of each chamber, and the belt-side wall 2
7 has a slit 36 extending in the belt width direction along the inclined surface of the upper edge or lower edge of the horizontal partition wall 28a;
37, the lower slits of each chamber serve as cooling water supply ports, and the upper slits 36 serve as discharge ports.
Further, on the belt-side surface of the wall 27, a large number of vertical partition walls 38 are arranged in parallel in the belt width direction, projecting at a predetermined height (for example, about several mm), and
By bringing the tips of the horizontal partition walls 28a and the tips of the horizontal partition walls 28a into contact with the back surfaces of the belts 5, 5', grooves 39a, 39 having a rectangular cross section are formed between the belt surface and the wall 27.
b, 39c to form a cooling water passage between the two slits.
またドライブプーリ３，３′は上記の噴流式冷
却器と同様に、その外周に多数の環状溝２２を設
け、ベルト背面を流下する冷却水を戻り管路２３
へ回収するように構成されている。 In addition, the drive pulleys 3, 3' are provided with a large number of annular grooves 22 on their outer peripheries, similar to the jet cooler described above, and the cooling water flowing down the back of the belt is passed through the return pipe 23.
is configured to be collected.
従つて、この密閉式冷却器を使用すれば、冷却
パツド２６，２６′とベルト背面の狭い空〓部を
冷却水が流れるため、同一所要冷却水量におい
て、従来の噴流式冷却器よりも高いベルト押圧力
が発生する。このため、メニスカス２４より下方
の溶湯静圧の高い鋳造区域２５でのベルト５，
５′の膨らみを容易に抑制することが可能になり、
従来の噴流式冷却器における該区域の欠点を解消
できる。 Therefore, if this closed type cooler is used, the cooling water flows through the cooling pads 26, 26' and the narrow space on the back of the belt, so the belt height is higher than that of a conventional jet type cooler with the same amount of cooling water required. A pressing force is generated. For this reason, the belt 5 in the casting area 25 where the static pressure of the molten metal is high below the meniscus 24,
It becomes possible to easily suppress the 5' bulge,
The disadvantages of this area in conventional jet coolers can be overcome.
ところが、溶湯静圧の低いメニスカス近傍２４
では逆に、冷却水によるベルト押圧力が溶湯静圧
より大きくなり易く、この部分のベルトが内部に
逆に膨らむ。これによつても鋳片の品質低下ある
いは、時によりブレークアウトを起こす等の欠点
を有している。 However, near the meniscus 24 where the molten metal static pressure is low,
Conversely, the belt pressing force caused by the cooling water tends to be greater than the static pressure of the molten metal, and the belt in this area swells inward. This also has drawbacks such as deterioration in the quality of the slab and occasional breakout.
（発明が解決しようとする課題）
そこで、本発明は、上記の欠点を解消し、溶湯
静圧の低いメニスカス部から高い下部まで該圧力
とバランスするようにベルト背面を支持すること
ができ、バルジングやブレークアウトを心配する
ことなく、表面品質の優れた鋳片を製造すること
ができる双ベルト式連続鋳造機を提供しようとす
るものである。(Problems to be Solved by the Invention) Therefore, the present invention eliminates the above-mentioned drawbacks, supports the back surface of the belt from the meniscus part where the static pressure of molten metal is low to the lower part where the static pressure is high, and can support the bulging The present invention aims to provide a twin-belt continuous casting machine that can produce slabs with excellent surface quality without worrying about cracking or breakout.
（課題を解決するための手段）
本発明は、製造すべき金属薄板の厚さに相当す
る間隔を隔てて下方に走行する一対の鋳造用無端
ベルトと、該ベルトを冷却する手段とを有し、該
ベルト間に注下された溶融金属をベルト表面で冷
却して凝固シエルを形成し、下方に金属薄板を連
続的に取り出す双ベルト式連続鋳造機において、
溶融金属静圧が低いメニスカス近傍のベルト背面
に、回転自在のフインロール対とベルト幅方向に
並設した多数の冷却水用噴流管対からなる噴流式
冷却器を設け、メニスカス部より下方の溶融金属
静圧の高い鋳造区域のベルト背面に、ベルト幅方
向に延びる冷却水供給用スリツト並びに冷却水排
出用スリツトを有する一対の密閉状箱形冷却パツ
ドを上下方向に隣接して多段に備えた密閉式冷却
器を設けたことを特徴とする双ベルト式連続鋳造
機である。(Means for Solving the Problems) The present invention includes a pair of endless belts for casting that run downward with an interval corresponding to the thickness of the thin metal sheet to be manufactured, and a means for cooling the belts. , in a twin-belt continuous casting machine in which molten metal poured between the belts is cooled on the belt surface to form a solidified shell, and a thin metal plate is continuously taken out from below,
A jet cooler consisting of a pair of freely rotatable fin rolls and a number of pairs of cooling water jet tubes arranged in parallel in the width direction of the belt is installed on the back of the belt near the meniscus where the static pressure of molten metal is low. A closed type with a pair of closed box-shaped cooling pads arranged vertically adjacent to each other in multiple stages on the back of the belt in the casting area where static pressure is high. This is a twin-belt continuous casting machine that is equipped with a cooler.
なお、上記冷却パツドを、ベルトに対向する第
１の壁と、該側の後方に位置する第２の壁と、隣
接する２つの水平隔壁とにより隔室を形成し、該
水平隔壁の先端をベルトに当接させ、隣接する水
平隔壁の中間に水平な中間隔壁を設けて該隔室を
上に分割し、下方の冷却水供給室と上方の冷却水
排出室を構成し、隔室の第２の壁に冷却水供給管
と冷却水排出管をそれぞれ接続し、第１の壁のベ
ルト側表面に多数の縦隔壁を設けて隔壁表面に縦
溝を形成し、該縦隔壁の表面をベルトに当接する
ようにし、第１の壁の下端と水平隔壁により冷却
水供給用スリツトを形成し、第１の壁の上端と水
平隔壁により冷却水排出用スリツトを形成し、か
つ、２つのスリツトをベルトに向かつて上方に傾
斜するように水平隔壁と第１の壁の上下端の形状
を形成することが好ましい。 Note that the cooling pad has a compartment formed by a first wall facing the belt, a second wall located at the rear of the side, and two adjacent horizontal partitions, and the tips of the horizontal partitions are A horizontal intermediate partition wall is provided between adjacent horizontal partition walls in contact with the belt to divide the partition upwardly, forming a lower cooling water supply chamber and an upper cooling water discharge chamber. A cooling water supply pipe and a cooling water discharge pipe are respectively connected to the second wall, and a large number of vertical partition walls are provided on the belt-side surface of the first wall to form vertical grooves on the partition surface, and the surface of the vertical partition wall is connected to the belt. The lower end of the first wall and the horizontal partition form a cooling water supply slit, the upper end of the first wall and the horizontal partition form a cooling water discharge slit, and the two slits It is preferable that the upper and lower ends of the horizontal partition wall and the first wall are formed so as to be inclined upward toward the belt.
（作用）
本発明は、溶融金属静圧が低いメニスカス近傍
のベルト背面には回転自在なフインロール付き噴
流式冷却器を設けることにより、冷却水によるベ
ルト押圧力が溶湯静圧より大きくなることを防ぐ
とともに、フインロールでベルトの差圧を支え、
また、メニスカスより下方の溶湯静圧の高い鋳造
区域には、冷却水のベルト押圧力の大きな密閉式
冷却器を設けることにより、ベルトに加わる圧力
を背面から冷却水で容易に追従させることがで
き、その結果、ベルトを平坦に維持することがで
き、表面品質の優れた鋳片を高い生産性の下で鋳
造することができ、かつ、ベルトの寿命を大幅に
延長することができるようになつた。(Function) The present invention prevents the belt pressing force caused by cooling water from becoming greater than the molten metal static pressure by providing a rotatable jet cooler with fin rolls on the back of the belt near the meniscus where the molten metal static pressure is low. At the same time, the fin roll supports the differential pressure on the belt,
In addition, by installing an enclosed cooler with a large belt pressing force of cooling water in the casting area below the meniscus where the static pressure of the molten metal is high, the pressure applied to the belt can be easily followed by cooling water from the back side. As a result, the belt can be kept flat, slabs with excellent surface quality can be cast with high productivity, and the life of the belt can be significantly extended. Ta.
（実施例）
第１図は本発明の実施例であるベルト式連続鋳
造装置の側面断面図であり、第２図は第１図のＡ
−Ａ矢視図である。第３〜７図に示した従来のベ
ルト式連続鋳造装置と同一符号の部材は同じもの
であり、同一の作用効果を有するので、ここでは
説明を省略する。(Example) Fig. 1 is a side sectional view of a belt-type continuous casting apparatus which is an embodiment of the present invention, and Fig. 2 is a
-A arrow view. Since the members having the same reference numerals as those in the conventional belt-type continuous casting apparatus shown in FIGS. 3 to 7 are the same and have the same functions and effects, their explanation will be omitted here.
このベルト式連続鋳造装置は、テンシヨンプー
リ２，２′とドライブプーリ３，３′とステアリワ
グプーリ４，４′との間をベルト５，５′が走行す
るようになつており、ベルト５，５′の垂直部の
間〓を製造すべき金属薄板の厚さに保持し、タン
デイツシユ９から該間〓に溶湯１０を供給し、ベ
ルト５，５′の背面より冷却することにより凝固
シエルを形成して、金属薄板７をガイドロール１
１及びピンチロール（図示せず）を介して取り出
す。この冷却には、噴流式冷却器と密閉式冷却器
が併用される。 In this belt-type continuous casting device, belts 5, 5' run between tension pulleys 2, 2', drive pulleys 3, 3', and steerer pulleys 4, 4'. , 5' is maintained at the thickness of the thin metal sheet to be manufactured, and the molten metal 10 is supplied from the tundish 9 to the space between the vertical parts of the belts 5, 5', and is cooled from the back side of the belts 5, 5' to form a solidified shell. The thin metal plate 7 is formed on the guide roll 1.
1 and pinch rolls (not shown). For this cooling, a jet type cooler and a closed type cooler are used together.
噴流式冷却器は、溶湯１０のメニスカス近傍２
４のベルト５，５′背面に、それぞれ複数個のフ
インロール１７，１７′を当接するように対設し、
テンシヨンプーリ２，２′外周にベルト全幅にわ
たつて並設して穿設した多数の環状溝１２に、そ
れぞれ捲装した冷却水用噴流管１３を装着したも
のである。 The jet cooler has a temperature near the meniscus 2 of the molten metal 10.
A plurality of fin rolls 17, 17' are provided in opposition to the back surfaces of the belts 5, 5' of No. 4, respectively, so as to be in contact with each other.
A plurality of annular grooves 12 are formed in parallel over the entire width of the belt on the outer periphery of the tension pulleys 2 and 2', and each of the coiled cooling water jet pipes 13 is installed.
また、密閉式冷却器は、前記メニスカス下方の
鋳造区域２５のベルト背面に、密閉状箱形の冷却
パツド４１，４１′をそれぞれ対向するように基
台１８に固設し、水平隔壁２８ａ、中間隔壁２８
ｂにより上下方向に複数室（第１図の場合は４２
ａ，４２ｂ，４３ａ，４３ｂの４室）に仕切ら
れ、ベルト側の壁４４にはベルト幅方向に延びる
冷却水供給用スリツト３７及び冷却水排水用スリ
ツト３６を設け、該可部４４のベルト側表面に複
数の縦隔壁４５を設けて断面矩形状の溝４６を形
成し、反対側の壁４７には冷却水供給管３３と冷
却水排出管３４を接続したものである。 In addition, the hermetic cooler has airtight box-shaped cooling pads 41 and 41' fixed to the base 18 so as to face each other on the back side of the belt in the casting area 25 below the meniscus, and a horizontal partition wall 28a, an intermediate Partition wall 28
b, there are multiple chambers in the vertical direction (42 in the case of Figure 1)
The belt side wall 44 is provided with a cooling water supply slit 37 and a cooling water drainage slit 36 extending in the belt width direction. A plurality of vertical partition walls 45 are provided on the surface to form grooves 46 having a rectangular cross section, and a cooling water supply pipe 33 and a cooling water discharge pipe 34 are connected to a wall 47 on the opposite side.
この双ベルト式連続鋳造機は、タンデイツシユ
９から一対のベルト５，５′の間に溶湯１０を注
入し、溶湯のメニスカス部分の近傍にあるベルト
背面に噴流管１３から冷却水を噴射させて、溶湯
１０をベルトを介して冷却し、ベルト背面をフイ
ンロール１７で支持し、凝固シエルを形成しつつ
下方に移動し、次いで冷却パツド４１，４１′に
入る。ここで冷却パツド４１，４１′のスリツト
３６から流出して断面矩形状の溝４６に沿つて上
昇する冷却水により、ベルトに対して大きな押圧
力を加えて、溶湯静圧に追従することができ、凝
固シエルはさらに冷却されて薄板鋳片７となつて
ガイドロール１１及びピンチロール（図示せず）
を介して下方に引き出される。この場合、メニス
カス部分の冷却水は冷却パツド４１，４１′上部
のスリツト３７から戻り管路３４で回収され、さ
らに、ベルト背面を流下する冷却水は、上記の従
来の冷却器と同様にドライブプーリ３，３′を介
して戻り管路２３に回収される。 This twin-belt continuous casting machine injects molten metal 10 between a pair of belts 5 and 5' from a tundish 9, and injects cooling water from a jet pipe 13 onto the back of the belt near the meniscus of the molten metal. The molten metal 10 is cooled through the belt, the back side of the belt is supported by the fin rolls 17, the molten metal 10 moves downward while forming a solidified shell, and then enters the cooling pads 41, 41'. Here, the cooling water flowing out from the slits 36 of the cooling pads 41, 41' and rising along the grooves 46 having a rectangular cross section applies a large pressing force to the belt, making it possible to follow the static pressure of the molten metal. , the solidified shell is further cooled to form a thin slab 7, which is passed through guide rolls 11 and pinch rolls (not shown).
is pulled downward through. In this case, the cooling water in the meniscus portion is collected through the return pipe 34 from the slit 37 at the top of the cooling pads 41, 41', and the cooling water flowing down the back of the belt is collected by the drive pulley as in the conventional cooler described above. 3, 3' to the return line 23.
（発明の効果）
本発明は、以上詳記したように、フインロール
付き噴流式冷却器と密閉式冷却器とを備えた双ベ
ルト式連続鋳造装置であつて、
溶湯の静圧が低いメニスカス近傍部分の冷却
は、噴流式のため、冷却水圧力を該部分の溶湯
静圧より高くならないようにバランスさせるこ
とが容易であり、この部分に密閉式冷却器を設
ける場合に予想されるベルトの鋳造側への膨ら
みを抑制することができる。また、下流の溶湯
静圧の高い鋳造区域は、密閉式冷却器を使用す
るため、該区域のベルト背面に作用する冷却水
圧力を容易に追従させてバランスさせることが
できる。その結果、ブレークアウト等の事故を
未然に防止することができ、かつ、ベルトに対
する局部的な冷却水圧力のアンバランスを抑
え、ベルトを平坦に維持することが可能にな
り、その結果、鋳造の表面品質及び生産性を向
上させ、かつ、ベルトの寿命を大幅に延ばすこ
とができる。(Effects of the Invention) As described in detail above, the present invention is a twin-belt continuous casting apparatus equipped with a jet cooler with fin rolls and a closed cooler, in which the static pressure of the molten metal is low in the vicinity of the meniscus. Since the cooling is a jet type, it is easy to balance the cooling water pressure so that it does not become higher than the static pressure of the molten metal in that part, and it is easy to balance the cooling water pressure so that it does not become higher than the static pressure of the molten metal in this part. bulge can be suppressed. Furthermore, since a closed cooler is used in the downstream casting area where the static pressure of the molten metal is high, the cooling water pressure acting on the back surface of the belt in this area can be easily followed and balanced. As a result, accidents such as breakouts can be prevented, and the local cooling water pressure imbalance against the belt can be suppressed, making it possible to maintain the belt flat. It can improve surface quality and productivity, and significantly extend belt life.
ベルトに対向する冷却パツドの側壁の表面
に、縦隔壁を設けて矩形の冷却水を流すための
縦溝を形成し、縦溝内を上方に冷却水を流すこ
とにより、効果的に冷却することが可能にな
り、また、縦隔壁表面に当接するようにベルト
を走行させることにより、メニスカス部より下
流の高い溶湯静圧に容易に追従してバランスさ
せることができる。 A vertical bulkhead is provided on the surface of the side wall of the cooling pad facing the belt to form a rectangular vertical groove for flowing cooling water, and the cooling water is allowed to flow upward in the vertical groove for effective cooling. Furthermore, by running the belt in contact with the surface of the vertical partition wall, it is possible to easily follow and balance the high static pressure of the molten metal downstream of the meniscus portion.
第１図及び第２図は本発明の１つの実施例であ
る双ベルト式連続鋳造機の側面断面図、第２図は
第１図のＡ−Ａ矢視図；第３図及び第４図は従来
の噴流式冷却器を備えた双ベルト式連続鋳造機の
側面断面図、第４図は第３図のＢ−Ｂ矢視図；第
５図〜第７図は従来の密閉式冷却器を備えた双ベ
ルト式連続鋳造機の側面断面図、第６図は第５図
の部分拡大図、第７図は第５図のＣ−Ｃ矢視図で
ある。
1 and 2 are side cross-sectional views of a twin-belt continuous casting machine that is one embodiment of the present invention; FIG. 2 is a view taken along the line A-A in FIG. 1; FIGS. 3 and 4 is a side cross-sectional view of a twin-belt continuous casting machine equipped with a conventional jet cooler; Figure 4 is a view taken along the line B-B in Figure 3; Figures 5 to 7 are a conventional closed-type cooler. 6 is a partially enlarged view of FIG. 5, and FIG. 7 is a view taken along the line C--C in FIG. 5.
Claims (1)
隔てて下方に走行する一対の鋳造用無端ベルト
と、該ベルトを冷却する手段とを有し、該ベルト
間に注下された溶融金属をベルト表面で冷却して
凝固シエルを形成し、下方に金属薄板を連続的に
取り出す双ベルト式連続鋳造機において、溶融金
属静圧が低いメニスカス近傍のベルト背面に、回
転自在のフインロール対とベルト幅方向に並設し
た多数の冷却水用噴流管対からなる噴流式冷却器
を設け、メニスカス部より下方の溶融金属静圧の
高い鋳造区域のベルト背面に、ベルト幅方向に延
びる冷却水供給用スリツト並びに冷却水排出用ス
リツトを有する一対の密閉状箱形冷却パツドを上
下方向に隣接して多段に備えた密閉式冷却器を設
けたことを特徴とする双ベルト式連続鋳造機。 ２ 上記冷却パツドを、ベルトに対向する第１の
壁と、該壁の後方に位置する第２の壁と、隣接す
る２つの水平隔壁とにより隔室を形成し、該水平
隔壁の先端をベルトに当接させ、隣接する水平隔
壁の中間に水平な中間隔壁を設けて該隔室を上下
に分割し、下方の冷却水供給室と上方の冷却水排
出室を構成し、それぞれの隔室の第２の壁後方に
冷却水供給管と冷却水排出管を接続し、第１の壁
のベルト側表面に多数の縦隔壁を設けて隔壁の間
に縦溝を形成し、該縦隔壁の表面をベルトに当接
するようにし、第１の壁の下端と水平隔壁により
冷却水供給用スリツトを形成し、第１の壁の上端
と水平隔壁により冷却水排出用スリツトを形成
し、かつ、２つのスリツトをベルトに向かつて上
方に傾斜するように水平隔壁と第１の壁の上下端
の形状を形成することを特徴とする請求項１記載
の双ベルト式連続鋳造機。[Scope of Claims] 1. A casting machine comprising a pair of endless belts for casting that run downward at an interval corresponding to the thickness of the thin metal sheet to be manufactured, and a means for cooling the belts, and a means for cooling the belts. In a twin-belt continuous casting machine that cools the dropped molten metal on the belt surface to form a solidified shell and continuously takes out thin metal sheets downward, a rotatable shell is placed on the back of the belt near the meniscus where the static pressure of the molten metal is low. A jet cooler consisting of a pair of fin rolls and a number of pairs of cooling water jet tubes arranged in parallel in the belt width direction is installed on the back of the belt in the casting area where molten metal static pressure is high below the meniscus. A twin-belt type continuous casting characterized by having a closed cooler equipped with a pair of closed box-shaped cooling pads arranged in multiple stages adjacent to each other in the vertical direction, each having an extending slit for supplying cooling water and a slit for discharging cooling water. Machine. 2 The cooling pad has a compartment formed by a first wall facing the belt, a second wall located behind the wall, and two adjacent horizontal partitions, and the tip of the horizontal partition is connected to the belt. A horizontal intermediate partition wall is provided between adjacent horizontal partition walls to divide the partition into upper and lower parts, forming a lower cooling water supply chamber and an upper cooling water discharge chamber. A cooling water supply pipe and a cooling water discharge pipe are connected to the rear of the second wall, and a large number of vertical partitions are provided on the belt-side surface of the first wall to form vertical grooves between the partitions. The lower end of the first wall and the horizontal partition form a cooling water supply slit, the upper end of the first wall and the horizontal partition form a cooling water discharge slit, and the two 2. The twin-belt continuous casting machine according to claim 1, wherein the upper and lower ends of the horizontal partition wall and the first wall are shaped so that the slits are inclined upward toward the belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP568684A JPS60152347A (en) | 1984-01-18 | 1984-01-18 | Mold cooler for belt type continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP568684A JPS60152347A (en) | 1984-01-18 | 1984-01-18 | Mold cooler for belt type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60152347A JPS60152347A (en) | 1985-08-10 |
| JPH0330458B2 true JPH0330458B2 (en) | 1991-04-30 |
Family
ID=11617982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP568684A Granted JPS60152347A (en) | 1984-01-18 | 1984-01-18 | Mold cooler for belt type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60152347A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2083434T3 (en) | 1989-09-19 | 1996-04-16 | Nippon Steel Corp | METHOD AND APPARATUS TO DETECT THE LEVEL OF CAST METAL. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115658U (en) * | 1984-01-10 | 1985-08-05 | 三菱重工業株式会社 | Belt type continuous casting equipment |
-
1984
- 1984-01-18 JP JP568684A patent/JPS60152347A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60152347A (en) | 1985-08-10 |
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