JPH0562017B2 - - Google Patents
Info
- Publication number
- JPH0562017B2 JPH0562017B2 JP10686185A JP10686185A JPH0562017B2 JP H0562017 B2 JPH0562017 B2 JP H0562017B2 JP 10686185 A JP10686185 A JP 10686185A JP 10686185 A JP10686185 A JP 10686185A JP H0562017 B2 JPH0562017 B2 JP H0562017B2
- Authority
- JP
- Japan
- Prior art keywords
- fixed
- drum
- weirs
- drums
- thin plate
- 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 - Fee Related
Links
- 238000005266 casting Methods 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 230000007935 neutral effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 description 6
- 230000005499 meniscus Effects 0.000 description 6
- 238000009749 continuous casting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel 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
- B22D11/0648—Casting surfaces
- B22D11/066—Side dams
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、ツインドラム方式の薄板連続鋳造装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a twin-drum continuous thin plate casting apparatus.
従来の薄板連続鋳造装置（ツインドラム方式）
を第２図に基づいて説明すると、２本の内部水冷
式ドラム１，１′とドラム１，１′の端面に押し当
てた２つの固定堰２，２′で構成される空間に溶
湯４を注湯し、薄板３を得る従来のツインドラム
方式の連続鋳造装置では、固定堰２，２′の壁面
での溶湯４の凝固を防止するかあるいは、固定堰
２，２′の壁面で凝固した凝固物が鋳造を阻害し
ないように処理することが重要である。このため
鋳造前に固定堰２，２′の壁面を高温に予熱し、
固定堰２，２′を振動させて薄板を得ていた。
Conventional thin plate continuous casting equipment (twin drum method)
To explain this based on FIG. 2, molten metal 4 is poured into a space consisting of two internal water-cooled drums 1, 1' and two fixed weirs 2, 2' pressed against the end surfaces of the drums 1, 1'. In the conventional twin-drum type continuous casting equipment that pours molten metal and obtains the thin plate 3, solidification of the molten metal 4 on the walls of the fixed weirs 2 and 2' is prevented, or solidification on the walls of the fixed weirs 2 and 2' is prevented. It is important to process the solidified material so that it does not interfere with casting. For this reason, the walls of the fixed weirs 2 and 2' are preheated to a high temperature before casting.
The thin plates were obtained by vibrating the fixed weirs 2 and 2'.
２個の固定堰２，２′の振動は支点８を固定堰
２，２′より上に配備し、振動を行つていた。こ
のため振動の振巾はドラム中立点が一番大きくメ
ニスカス（湯面）が最も振幅は小さい状態となつ
ている。なお、第２図において、５はタンデイツ
シユ、６はピンチロール、７はガイドロールであ
る。 The two fixed weirs 2, 2' were vibrated by placing a fulcrum 8 above the fixed weirs 2, 2'. Therefore, the amplitude of vibration is greatest at the neutral point of the drum, and the amplitude is smallest at the meniscus (molten metal surface). In addition, in FIG. 2, 5 is a tundish, 6 is a pinch roll, and 7 is a guide roll.
従来のツインドラム方式の薄板連続鋳造装置
は、上記したように、固定堰２，２′を振動させ
る手段を採用しており、そして、この振動支点８
は、固定堰２，２′より上に設置してある。この
ように振動支点８を設置するため、従来装置では
次の(1)及び(2)の欠点を有する。
As mentioned above, the conventional twin-drum type thin plate continuous casting apparatus employs means for vibrating the fixed weirs 2 and 2', and this vibration fulcrum 8
are installed above the fixed weirs 2 and 2'. Since the vibration fulcrum 8 is installed in this way, the conventional device has the following drawbacks (1) and (2).
(1) メニスカスの固定堰２，２′の振幅が一番小
さいため、メニスカス直下の固定堰２，２′の
面に凝固物が固着して成長する。この凝固物が
ドラム１，１′面で生成した凝固シエルとドラ
ム１，１′の中立点で一体化すると、鋳片３端
部の性状を著しく害するだけでなく、ドラム
１，１′面上で生成した凝固シエルを破断し、
ブレークアウト（溶湯４の洩れ）を引き起こ
す。(1) Since the fixed weirs 2 and 2' of the meniscus have the smallest amplitude, the solidified matter adheres and grows on the surface of the fixed weirs 2 and 2' directly below the meniscus. If this solidified material is integrated with the solidified shell generated on the surfaces of the drums 1, 1' at the neutral point of the drums 1, 1', it will not only significantly damage the properties of the ends of the slab 3, but also rupture the coagulated shell produced by
This causes a breakout (leakage of molten metal 4).
(2) ドラム１，１′の中立点近傍での振幅が大き
いため、ドラム１，１′中立点近傍の固定堰の
摩耗が著しく、ブレークアウトを引き起こす。(2) Since the amplitude near the neutral point of the drums 1, 1' is large, the fixed weir near the neutral point of the drums 1, 1' is significantly worn, causing a breakout.
本発明は、上記従来装置の欠点を解消する薄板
連続鋳造装置を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous thin plate casting apparatus that eliminates the drawbacks of the conventional apparatus described above.
そして、本発明は、上記目的を達成する手段と
して、振動する固定堰の支点を、ドラム中立点よ
り下に設置した点にあり、これによつて、固定堰
の振幅をメニスカス部が最も大きくした点にあ
る。すなわち、本発明は、製造する金属帯板厚さ
に相当する間隙を置いて水平に並列した互いに回
転方向を異なる２本の水冷ドラムとこの水冷ドラ
ムの端面に押し当てた２個の固定堰によつて形成
される空間に溶湯を注ぎ２個の固定堰を振動させ
て薄板を得る連続鋳造装置において、２個の固定
堰の振動の支点をドラム中立点より下に設置する
ことを特徴とする薄板連続鋳造装置である。
The present invention, as a means to achieve the above object, consists in setting the fulcrum of the vibrating fixed weir below the neutral point of the drum, thereby making the meniscus part of the fixed weir the largest in amplitude. At the point. That is, the present invention consists of two water-cooled drums that are parallel to each other horizontally with a gap corresponding to the thickness of the metal strip to be manufactured and that rotate in different directions, and two fixed weirs that are pressed against the end faces of the water-cooled drums. A continuous casting device that obtains a thin plate by pouring molten metal into the space thus formed and vibrating two fixed weirs, characterized in that the fulcrum of vibration of the two fixed weirs is installed below the neutral point of the drum. This is a continuous thin plate casting device.
本発明では、固定堰の振動する支点をドラム中
立点より下に設置して、該固定堰を振動可能に配
設したものであるから、この振動機構の採用によ
り、メニスカス部の固定堰の振幅が一番大きくな
るため固定堰面の凝固物が固着しにくい。すなわ
ち、本発明ではドラム端面に押し当てる固定堰は
円方向に動く機構になつており、この機構によ
り、メニスカス直下の振幅を大きくドラム中立点
近傍では小さな振幅が与えられることによりメニ
スカス直下の固定堰面とドラム端面に生成する凝
固物を剥離させ、中立点近傍での固定堰面の摩耗
を防止する。また固定堰は一定面圧でドラム端面
に押し当て溶湯の洩れ差し込みを防止させる。な
お、ドラム中立点近傍は振幅が小さくなるが、凝
固物が生成することがないので関係がない。 In the present invention, the fulcrum on which the fixed weir vibrates is installed below the neutral point of the drum, and the fixed weir is arranged so that it can vibrate. Therefore, by adopting this vibration mechanism, the amplitude of the fixed weir at the meniscus can be adjusted. is the largest, making it difficult for the solidified material to stick to the fixed weir surface. That is, in the present invention, the fixed weir that presses against the end face of the drum has a mechanism that moves in a circular direction, and this mechanism increases the amplitude just below the meniscus and gives a small amplitude near the neutral point of the drum. It peels off the coagulated material that forms on the surface and drum end surface, and prevents wear of the fixed weir surface near the neutral point. Further, the fixed weir is pressed against the end face of the drum with a constant surface pressure to prevent leakage of molten metal. Although the amplitude is small near the neutral point of the drum, it is irrelevant because no coagulation occurs.
また、本発明において、固定堰としては1700℃
以上の溶融点をもつ耐火性材料からなるものが好
ましく、また、この固定堰は初期に500℃以上に
予熱できるように構成されているのが好ましく、
さらに鋳造操業中でも加熱できるように構成され
ているのが好ましい。 In addition, in the present invention, as a fixed weir, the temperature is 1700℃.
Preferably, the fixed weir is made of a refractory material with a melting point of 500°C or higher, and is preferably constructed so that it can be preheated to 500°C or higher at an initial stage.
Furthermore, it is preferable that the structure is such that heating can be performed even during casting operation.
以下、本発明を第１図に基づいて詳細に説明す
る。第１図は本発明の実施例であるツインドラム
方式の薄板連続鋳造装置の縦断面図である。第１
図に示す実施例装置は、薄板鋳片３を製造する水
冷鋳造ドラム１，１′、水冷鋳造ドラム１，１′の
間の溶湯４を定量供給するタンデイツシユ５など
を主要構成部材としている。この装置を説明する
と、水冷鋳造ドラム１，１′は水平に設置されて
おり、図示しない駆動装置により回転（矢示方
向）駆動される。この水冷鋳造ドラム１，１′は
例えば銅または銅合金、あるいは鋼材により形成
され、内部に水冷機構を内蔵するものであり、溶
湯４との接触面積を大きく得るため相当大径のド
ラムとなつている。また水冷鋳造ドラム１，１′
の両端部には溶湯洩れを防止するための耐火性材
料からなる固定堰２，２′が上記ドラム１，１′の
両端面に押し当てられており、２本の水冷鋳造ド
ラム１，１′と２個の固定堰２，２′で形成される
空間に溶湯４が注湯される。注湯された溶湯４は
水冷、鋳造ドラム１，１′の表面に接触して、冷
却され、できた凝固シエルは一体化され、鋳片３
となる。この鋳片３はピンチロール６ガイドロー
ル７により引抜かれる。本発明の固定堰部を詳細
に説明すると、固定堰２，２′はドラム中立点よ
り下に振動する支点８があり、振動させる作用点
９は固定堰２，２′の上部にある。振動させるた
めの手段としては図示しない駆動源（例えばクラ
ンクカムシヤフト、電気シリンダー偏心モータ
等）により振動を与えている。尚作用点９は固定
堰２，２′の両サイドにあつても差しつかえない。
Hereinafter, the present invention will be explained in detail based on FIG. FIG. 1 is a longitudinal sectional view of a twin-drum continuous thin plate casting apparatus according to an embodiment of the present invention. 1st
The main components of the embodiment shown in the figure include water-cooled casting drums 1 and 1' for producing thin plate slabs 3, and a tundish 5 for supplying a fixed amount of molten metal 4 between the water-cooled casting drums 1 and 1'. To explain this apparatus, water-cooled casting drums 1 and 1' are installed horizontally and are driven to rotate (in the direction of the arrow) by a drive device (not shown). The water-cooled casting drums 1 and 1' are made of, for example, copper, copper alloy, or steel, and have a built-in water cooling mechanism, and have a considerably large diameter to obtain a large contact area with the molten metal 4. There is. In addition, water-cooled casting drums 1, 1'
Fixed weirs 2, 2' made of fire-resistant material are pressed against both end surfaces of the drums 1, 1' to prevent molten metal from leaking, and the two water-cooled casting drums 1, 1' Molten metal 4 is poured into the space formed by the two fixed weirs 2 and 2'. The poured molten metal 4 is water-cooled, contacts the surfaces of the casting drums 1 and 1', and is cooled, and the solidified shell formed is integrated and cast slab 3
becomes. This slab 3 is pulled out by pinch rolls 6 and guide rolls 7. To explain the fixed weir section of the present invention in detail, the fixed weir 2, 2' has a vibrating fulcrum 8 below the neutral point of the drum, and the point of action 9 for vibrating is located at the upper part of the fixed weir 2, 2'. As a means for vibrating, a drive source (not shown) (for example, a crank camshaft, an electric cylinder eccentric motor, etc.) provides vibration. Note that the points of action 9 may be located on both sides of the fixed weirs 2, 2'.
具体例
(1) 固定堰
固定堰の耐火材料としてボロニナイト
（BN）アルミナ・グラフアイト、窒化珪素
（Si3N4）等の種々用いて実験した。また固定
堰は約1300℃に予熱し、鋳造中も加熱した。ま
た固定堰をドラム端面に２〜10Kg／cm2で押し付
けた。Specific example (1) Fixed weir Experiments were conducted using various refractory materials for the fixed weir, such as boroninite (BN), alumina/graphite, and silicon nitride (Si 3 N 4 ). Additionally, the fixed weir was preheated to approximately 1300℃ and heated during casting. Further, a fixed weir was pressed against the end face of the drum at a pressure of 2 to 10 kg/cm 2 .
(2) 振動数
１〜60Hz
(3) 振幅
0.2〜３mm（湯面レベル）
以上の諸条件で鋳造したところ、ブレークアウ
ト等の操業トラブルもなく、良好な鋳片を安定し
て得ることができた。(2) Frequency: 1 to 60 Hz (3) Amplitude: 0.2 to 3 mm (molten metal level) When casting under the above conditions, good slabs could be stably obtained without operational troubles such as breakouts. Ta.
本発明は、以上詳記したように、固定堰の振動
支点をドラム中立点より下に設置したものである
から、固定堰壁面での凝固物を生成することなく
良好な鋳片が得られると共に安定した鋳造が可能
となる効果が生ずる。また、ドラム中立点近傍の
振幅が小さいため、この部分の固定堰を構成する
材料の摩耗が著しく減少し、固定堰の寿命が著し
く伸びる効果が生ずる。
As detailed above, in the present invention, the vibration fulcrum of the fixed weir is installed below the neutral point of the drum, so that good slabs can be obtained without forming solidified matter on the wall of the fixed weir. This has the effect of making stable casting possible. Furthermore, since the amplitude near the neutral point of the drum is small, wear of the material forming the fixed weir in this area is significantly reduced, resulting in the effect of significantly extending the life of the fixed weir.
第１図は、本発明の実施例であるツインドラム
方式の薄板連続鋳造装置の縦断面図であり、第２
図は従来のツインドラム方式の薄板連続装置の縦
断面図である。
FIG. 1 is a vertical cross-sectional view of a twin-drum type continuous thin plate casting apparatus according to an embodiment of the present invention, and FIG.
The figure is a longitudinal sectional view of a conventional twin-drum thin plate continuous device.
Claims (1)
て水平に並列した互いに回転方向を異なる２本の
水冷ドラムとこの水冷ドラムの端面に押し当てた
２個の固定堰によつて形成される空間に溶湯を注
ぎ２個の固定堰を振動させて薄板を得る連続鋳造
装置において、２個の固定堰の振動の支点をドラ
ム中立点より下に設置することを特徴とする薄板
連続鋳造装置。1. It is formed by two water-cooled drums arranged horizontally in parallel with a gap corresponding to the thickness of the metal strip to be manufactured, rotating in different directions, and two fixed weirs pressed against the end faces of the water-cooled drums. A continuous thin plate casting apparatus for obtaining a thin plate by pouring molten metal into a space and vibrating two fixed weirs, characterized in that the fulcrum of vibration of the two fixed weirs is installed below the neutral point of the drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10686185A JPS61266160A (en) | 1985-05-21 | 1985-05-21 | Continuous casting device for thin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10686185A JPS61266160A (en) | 1985-05-21 | 1985-05-21 | Continuous casting device for thin sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61266160A JPS61266160A (en) | 1986-11-25 |
| JPH0562017B2 true JPH0562017B2 (en) | 1993-09-07 |
Family
ID=14444348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10686185A Granted JPS61266160A (en) | 1985-05-21 | 1985-05-21 | Continuous casting device for thin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61266160A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11027330B2 (en) | 2016-08-10 | 2021-06-08 | Nucor Corporation | Method of thin strip casting |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69739402D1 (en) * | 1997-02-17 | 2009-06-25 | Nippon Steel Corp | DOUBLE ROLLING DEVICE AND METHOD FOR CONTINUOUSLY PUNCHING STEEL PLATE |
-
1985
- 1985-05-21 JP JP10686185A patent/JPS61266160A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11027330B2 (en) | 2016-08-10 | 2021-06-08 | Nucor Corporation | Method of thin strip casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61266160A (en) | 1986-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |