JPH0316215B2 - - Google Patents
Info
- Publication number
- JPH0316215B2 JPH0316215B2 JP57207737A JP20773782A JPH0316215B2 JP H0316215 B2 JPH0316215 B2 JP H0316215B2 JP 57207737 A JP57207737 A JP 57207737A JP 20773782 A JP20773782 A JP 20773782A JP H0316215 B2 JPH0316215 B2 JP H0316215B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- drum
- leakage prevention
- continuous casting
- molten
- 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
- 239000002184 metal Substances 0.000 claims description 43
- 229910052751 metal Inorganic materials 0.000 claims description 43
- 230000002265 prevention Effects 0.000 claims description 19
- 150000003839 salts Chemical class 0.000 claims description 13
- 238000009749 continuous casting Methods 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 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
- B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
- B22D11/0671—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating for heating or drying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】
本発明は、立型ベルト方式またはツインドラム
式連続鋳造装置に関し、特に立型ベルトまたはツ
インドラムの両側端面部に、良好な溶湯洩れ防止
手段を配設した連続鋳造装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vertical belt type or twin drum type continuous casting apparatus, and in particular to a continuous casting apparatus in which good molten metal leakage prevention means are provided on both end surfaces of the vertical belt or twin drum. It is related to.
金属溶湯を、鋳型に鋳込んで板状に成形し、こ
れを鋳型から引抜く作業を連続的に行ない、鋳造
された板を圧延用素材として、あるいは、これを
適宜な長さに切断して、そのまま利用する所謂金
属の連続鋳造が、従来から行なわれている。 Molten metal is poured into a mold and formed into a plate shape, which is then continuously pulled out of the mold.The cast plate can be used as a rolling material or by cutting it into appropriate lengths. 2. Description of the Related Art Continuous casting of metals, which can be used as is, has been carried out for a long time.
圧延用素材の連続鋳造においては、鋳片の厚さ
をできるだけ薄くすると、溶湯の凝固速度が迅く
なるため、生産性（単位時間当りの製造重量）を
あまり下げずに、しかも製品板までの圧延工程の
作業量を減らすことができるなどの利点があるの
で、鋳片の薄肉化を志向する傾向にある。 In continuous casting of rolling materials, making the thickness of the slab as thin as possible will speed up the solidification rate of the molten metal, which will reduce productivity (manufactured weight per unit time) too much and also reduce the amount of time required to reach the product plate. There is a trend toward thinner slabs because of the advantages of reducing the amount of work in the rolling process.
薄板連続鋳造装置としては、従来から種々の形
式のものが提案されているが、その中の１つに、
第１図に示すツインドラム方式と、第２図に示す
立型ベルト方式とがある。第１図のツインドラム
方式では、１，１が図示しない駆動源により、互
いに反対方向（矢印方向）に同期的に駆動回転さ
れる一対の水冷ドラムで、それら一対のドラム
１，１間に、タンデイツシユ２に貯えられた溶湯
３がノズル４を介して鋳込まれ、それら水冷ドラ
ム１，１に接して冷却、凝固した部分が板６とな
つて、連続的に下方に所定の速度で引抜かれる。
なお図中５は、ドラム１，１と既に凝固して板状
となつた部分に囲まれた未凝固の溶湯である。ま
た、第２図に示す立型ベルト方式においては、各
一対の水冷ドラム１′，１′及び水冷２′，２′間に
張設した一対の無端ベルト３′，３′（裏面が水冷
されている。）が、駆動源で駆動されるそれらの
ドラムの回転につれて矢印方向へ同期的に、同一
速度で走行するようになつており、その間にタン
デイツシユ４′内の溶湯５′がノズル６′を介して
注入され、凝固して板８′となり、両ベルト３′，
３′の走行につれて下方に送り出されるようにな
つている。なお、図中７′ベルト３′，３′と凝固
した板８′に囲まれた未凝固部分を示す。 Various types of continuous thin plate casting equipment have been proposed, one of which is the
There is a twin drum system shown in FIG. 1 and a vertical belt system shown in FIG. In the twin drum system shown in FIG. 1, 1 and 1 are a pair of water-cooled drums that are driven and rotated synchronously in opposite directions (arrow directions) by a drive source (not shown), and between the pair of drums 1 and 1, The molten metal 3 stored in the tundish 2 is cast through the nozzle 4, and the portion that cools and solidifies in contact with the water-cooled drums 1, 1 becomes the plate 6, which is continuously drawn downward at a predetermined speed. .
Note that 5 in the figure is an unsolidified molten metal surrounded by the drums 1 and 1 and a portion that has already solidified into a plate shape. In addition, in the vertical belt system shown in Fig. 2, a pair of endless belts 3', 3' (the back surface of which is ) are designed to travel synchronously and at the same speed in the direction of the arrow as the drums driven by the drive source rotate, and during this time the molten metal 5' in the tundish 4' flows into the nozzle 6'. It solidifies into a plate 8', and both belts 3',
As the section 3' travels, it is sent downward. The figure shows an unsolidified portion surrounded by belts 3', 3' and solidified plates 8'.
ところで、上記のツインドラム方式及び立型ベ
ルト方式連続鋳造装置のいずれも、ドラム、ベル
ト端面における溶湯の流出防止を行なうとともに
亀裂や形状不整の欠陥のない良質の薄板を鋳造で
きるようにすることが必要である。ドラム、ベル
ト間の空隙の下方は、凝固して送り出されて行く
板の上端によつて閉ざされるので、下方に向つて
溶湯が漏れることはないが、端面の間隙は閉ざさ
れていないので、溶湯が漏れてしまう。 By the way, both of the above-mentioned twin drum type and vertical belt type continuous casting machines are capable of preventing molten metal from flowing out at the end surfaces of the drum and belt, and also being able to cast high-quality thin plates without defects such as cracks or irregular shapes. is necessary. The lower part of the gap between the drum and the belt is closed by the upper end of the plate that solidifies and is sent out, so the molten metal will not leak downward, but the gap between the end faces is not closed, so the molten metal will not leak. will leak.
ドラム、ベルトの端面の間隙を閉じるため、端
面に接する溶湯漏れ止め壁を設置すると、種々の
問題が生じる。 When a molten metal leakage prevention wall is installed in contact with the end surfaces of a drum or belt in order to close the gap between the end surfaces, various problems arise.
ドラムまたはベルトの端面から十分離れた位置
でのドラムまたはベルト間の空隙の溶湯は、ドラ
ムあるいはベルトに接した部分から凝固を始め、
ドラムの回転あるいはベルトの走行につれて、次
第に凝固層が厚くなり、両ドラムあるいはベルト
の間隙の最もせまい部分では、両方のドラムある
いはベルト上に生成した凝固層が接合して板とな
るのであるが、ドラムあるいはベルトの端面の部
分においては、該端面に接した溶湯漏れ止め壁上
に凝固した部分が扇状に形成され、この扇形部分
が、２つのドラムあるいはベルトの間に噛み込ま
れるため、板の両端の形状が整わず、場合によつ
ては両端部に亀裂が生じる。また、扇形に形成さ
れた凝固部分がドラムの回転あるいはベルトの走
行によつて引張られる場合、端面に接する溶湯漏
れ止め壁と、該凝固部分との摩擦によつて、この
部分に亀裂や破断を生じる。なおまた、端面に接
した溶湯漏れ止め壁面上に凝固部が成長すると、
その部分でドラム面間あるいはベルト面間への溶
湯の供給が阻害され、板の両端部の形状に不整に
なる等の不具合が発生する。従つて、このような
溶湯漏れ止め壁面上の凝固の発生を完全に防止す
るか、あるいは可能な限り防止し、もしも若干の
凝固を生じても、端面壁への固着がなく、凝固物
が無理なく両ドラム間あるいはベルト間に巻き込
まれて、板の一部となつて行くようにすることが
必要である。 The molten metal in the gap between the drums or belts at a position sufficiently far from the end face of the drum or belt will begin to solidify from the part in contact with the drum or belt, and
As the drum rotates or the belt runs, the coagulated layer gradually becomes thicker, and at the narrowest part of the gap between both drums or belts, the coagulated layers formed on both drums or belts join together to form a plate. At the end face of the drum or belt, a solidified part is formed in a fan shape on the molten metal leakage prevention wall in contact with the end face, and this fan-shaped part is caught between two drums or belts, so that the plate Both ends are not shaped properly, and in some cases, cracks may occur at both ends. In addition, when the fan-shaped solidified part is stretched by the rotation of the drum or the running of the belt, the friction between the solidified part and the molten metal leak-proof wall in contact with the end surface may cause cracks or breaks in this part. arise. Furthermore, if a solidified portion grows on the molten metal leakage prevention wall surface that is in contact with the end surface,
The supply of molten metal between the drum surfaces or between the belt surfaces is obstructed at that portion, causing problems such as irregular shapes at both ends of the plate. Therefore, the occurrence of solidification on the molten metal leakage prevention wall is completely prevented or prevented as much as possible, and even if some solidification occurs, it will not stick to the end wall and the solidified material will not be forced. It is necessary to make it so that it does not get caught up between both drums or between the belts and becomes part of the board.
本発明は、かかる要請に応えることのできる連
続鋳造装置を提供することを目的として提案され
たもので、ツインドラム方式または立型ベルト方
式の連続鋳造装置において、ツインドラムまたは
立型ベルトの両側端面に、セラミツクス製の溶湯
漏れ止め壁を当接させて配設するとともに、前記
溶湯漏れ止め壁の内部に溶融塩の流通路を設け、
前記溶湯漏れ止め壁の溶湯側に溶融塩流通路に連
通して複数の小孔を設けてなることを特徴とする
連続鋳造装置に係るものである。 The present invention was proposed for the purpose of providing a continuous casting apparatus that can meet such demands. A molten metal leakage prevention wall made of ceramics is disposed in contact with the molten metal leakage prevention wall, and a molten salt flow path is provided inside the molten metal leakage prevention wall,
The present invention relates to a continuous casting apparatus characterized in that a plurality of small holes are provided on the molten metal side of the molten metal leakage prevention wall so as to communicate with the molten salt flow passage.
以下、本発明をツインドラム方式の連続鋳造装
置に適用した例を第３図乃至第５図について具体
的に説明する。一対のドラム２１，２１の端面に
接して配設する溶湯漏れ止め壁２２を、セラミツ
クス材からなり入口２４、出口２５を有する密閉
容器で形成し、その内部を適当な融点を有する溶
融塩２３を入口２４から出口２５に向つて流通せ
しめて循環させ、ドラム２１と接する壁面を必要
な温度に保持する。なお、図中、２６はドラム２
１，２１間の溶湯の自由表面を示し、３３は溶湯
漏れ止め壁２２のドラム２１との接触側端面に穿
設された多数の小孔を示す。３４は溶湯側（ドラ
ム側）壁面のぬすみ部分でＡ，Ｂ，Ｃ，Ｄ，Ｅ，
Ｆ（第４図の斜線部分）はそのぬすみ部分の範囲
を示し、３６は凝固生成されて引抜かれる薄板を
示す。 Hereinafter, an example in which the present invention is applied to a twin-drum type continuous casting apparatus will be explained in detail with reference to FIGS. 3 to 5. The molten metal leakage prevention wall 22 disposed in contact with the end faces of the pair of drums 21, 21 is formed of a sealed container made of ceramic material and having an inlet 24 and an outlet 25, and the inside thereof is filled with a molten salt 23 having an appropriate melting point. It is circulated by flowing from the inlet 24 toward the outlet 25, and the wall surface in contact with the drum 21 is maintained at a required temperature. In addition, in the figure, 26 is drum 2.
The free surface of the molten metal between 1 and 21 is shown, and 33 is a large number of small holes drilled in the end surface of the molten metal leakproof wall 22 on the side that comes into contact with the drum 21. 34 is the hollow part of the wall on the molten metal side (drum side), which is A, B, C, D, E,
F (the shaded area in FIG. 4) indicates the range of the hollow part, and 36 indicates the thin plate that is solidified and drawn out.
本例の場合、溶湯漏れ止め壁２２内の溶融塩の
圧力を溶湯の圧力より僅かに高く保つことより、
溶融塩が多数の小孔３３を介して溶湯側に微量ず
つ流出し、これによつて溶湯漏れ止め壁２２の溶
湯側壁面に塩の薄い膜が形成され、該壁面に溶湯
が凝固付着することが防止される。かりに溶湯側
壁面付近で僅かに凝固することがあつても、それ
が付着固定することがないので、ドラム間に無理
なく巻込まれ、板３６の順調な生成を防害するこ
とはない。溶湯側壁面のぬすみ部分３４（Ａ，
Ｂ，Ｃ，Ｄ，Ｅ，Ｆ）は、１mm以下0.1mm以上の
厚さ程度に僅かに表面をぬすんだ部分であり、上
部は垂直になつており、また、下端は大体２つの
ドラム２１，２１の中心線を結ぶ高さのレベルで
あり、小孔３３より流出した溶融塩が、簡単に下
方に流失することなく、ぬすみ面に薄い膜を形成
しやすいようになつている。 In the case of this example, by keeping the pressure of the molten salt in the molten metal leakage prevention wall 22 slightly higher than the pressure of the molten metal,
The molten salt flows out to the molten metal side little by little through the large number of small holes 33, thereby forming a thin film of salt on the molten metal side wall surface of the molten metal leakage prevention wall 22, and the molten metal solidifies and adheres to the wall surface. is prevented. Even if the molten metal solidifies slightly near the side wall surface, it does not adhere and fix, so it is easily rolled up between the drums and does not prevent the smooth formation of the plates 36. The hollow part 34 (A,
B, C, D, E, F) are parts where the surface is slightly thinned to a thickness of 1 mm or less and 0.1 mm or more, the upper part is vertical, and the lower end is about two drums 21. , 21, so that the molten salt flowing out from the small hole 33 does not easily flow downward and easily forms a thin film on the hollow surface.
本発明によると、溶湯を保持する両ドラムの両
側端面に接して配設された溶湯漏れ止め壁がセラ
ミツクス材で構成されており、更に該壁を加熱す
る溶融塩が小孔より溶湯側壁面に流出して、該壁
面に塩の薄膜を形成するので、壁面上に凝固物が
形成されることがなく、製造された板端部に不整
形部や亀裂等の欠陥を発生する惧がない。 According to the present invention, the molten metal leakage prevention walls disposed in contact with both end surfaces of both drums that hold the molten metal are made of ceramic material, and the molten salt that heats the walls is allowed to flow through the small holes onto the molten metal side walls. Since the salt flows out and forms a thin film of salt on the wall surface, no coagulum is formed on the wall surface, and there is no risk of defects such as irregularities or cracks occurring at the end of the manufactured plate.
第１図は従来のツインドラム方式連続鋳造装置
の一部を切開して示す略示的側面図、第２図は従
来の立型ベルト方式連続鋳造装置の一部を切開し
て示す略示的側面図、第３図乃至第５図は本発明
の一実施例の概略説明図で、第３図は溶湯漏れ止
め壁を断面で示した正面図、第４図は溶湯漏れ止
め壁をドラム内部より見た概略図、第５図は第４
図のＸ−Ｘ線断面図である。
２１：ドラム、２２：溶湯漏れ止め壁、３３：
小孔。
FIG. 1 is a schematic side view showing a conventional twin-drum continuous casting machine with a part cut away, and FIG. 2 is a schematic side view showing a conventional vertical belt continuous casting machine with a part cut away. The side view and FIGS. 3 to 5 are schematic illustrations of an embodiment of the present invention, FIG. 3 is a front view showing a molten metal leakage prevention wall in cross section, and FIG. 4 is a molten metal leakage prevention wall inside the drum. Schematic view from a closer perspective, Figure 5 is the 4th
It is a sectional view taken along the line XX in the figure. 21: Drum, 22: Molten metal leakage prevention wall, 33:
Small hole.
Claims (1)
続鋳造装置において、ツインドラムまたは立型ベ
ルトの両側端面に、セラミツクス製の溶湯漏れ止
め壁を当接させて配設するとともに、前記溶湯漏
れ止め壁の内部に溶融塩の流通路を設け、前記溶
湯漏れ止め壁の溶湯側に溶融塩流通路に連通した
複数の小孔を設けてなることを特徴とする連続鋳
造装置。1. In a twin-drum type or vertical belt type continuous casting device, molten metal leakage prevention walls made of ceramics are disposed in contact with both end surfaces of the twin drum or vertical belt, and the interior of the molten metal leakage prevention walls is provided. A continuous casting apparatus characterized in that a molten salt flow passage is provided in the molten salt flow passage, and a plurality of small holes communicating with the molten salt flow passage are provided on the molten metal side of the molten metal leakage prevention wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20773782A JPS5997744A (en) | 1982-11-29 | 1982-11-29 | Continuous casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20773782A JPS5997744A (en) | 1982-11-29 | 1982-11-29 | Continuous casting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5997744A JPS5997744A (en) | 1984-06-05 |
| JPH0316215B2 true JPH0316215B2 (en) | 1991-03-05 |
Family
ID=16544700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20773782A Granted JPS5997744A (en) | 1982-11-29 | 1982-11-29 | Continuous casting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5997744A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2058447A (en) * | 1932-05-16 | 1936-10-27 | Clarence W Hazelett | Metalworking process |
| US2127515A (en) * | 1937-06-07 | 1938-08-23 | Clarence W Hazelett | Method of producing solid metal of substantially constant cross section throughout its length directly from a mass of molten metal and to an apparatus therefor |
-
1982
- 1982-11-29 JP JP20773782A patent/JPS5997744A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2058447A (en) * | 1932-05-16 | 1936-10-27 | Clarence W Hazelett | Metalworking process |
| US2127515A (en) * | 1937-06-07 | 1938-08-23 | Clarence W Hazelett | Method of producing solid metal of substantially constant cross section throughout its length directly from a mass of molten metal and to an apparatus therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5997744A (en) | 1984-06-05 |
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