JPH05276Y2 - - Google Patents
Info
- Publication number
- JPH05276Y2 JPH05276Y2 JP19374687U JP19374687U JPH05276Y2 JP H05276 Y2 JPH05276 Y2 JP H05276Y2 JP 19374687 U JP19374687 U JP 19374687U JP 19374687 U JP19374687 U JP 19374687U JP H05276 Y2 JPH05276 Y2 JP H05276Y2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- core
- roll
- pool
- manifold
- 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 46
- 238000001816 cooling Methods 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000009749 continuous casting Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、溶湯（溶融金属）から直接薄板を製
造する双ロール式連鋳機の注湯装置に関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pouring device for a twin-roll continuous caster that directly produces thin plates from molten metal.
［従来の技術］
鋼などの溶融金属（溶湯）をタンデイツシユか
ら水冷鋳型に注いで鋳片にし、複数のロールによ
り加圧しながら引き抜いてスラブ、ビレツトなど
を製造する連続鋳造機（連鋳機）は一般に良く知
られており、製造されたスラブ、ビレツトは一定
長さに切断された後に加熱炉を径曲して圧延工程
に送られる。そして、このスラブ、ビレツタを製
造する連続鋳造機を更に設備的に合理化するもの
として、溶湯から直接薄板を製造するいわゆる双
ロール式連鋳機が開発されている。[Prior Art] A continuous casting machine is a continuous casting machine that produces slabs, billets, etc. by pouring molten metal (molten metal) such as steel from a tundish into a water-cooled mold to form slabs, and then drawing them out under pressure with multiple rolls. It is generally well known that the manufactured slab or billet is cut into a certain length, then bent through a heating furnace and sent to a rolling process. In order to further streamline the continuous casting machine for producing slabs and billets, a so-called twin-roll continuous casting machine has been developed for producing thin plates directly from molten metal.
双ロール式連鋳機は、第３図及び第４図に示す
ように、２本の冷却ロール１が間隔をおいてほぼ
水平且つ平行に設けられ、その幅方向両端部にサ
イド堰２を配置する。そして、前記ロール１の上
方に、溶湯３を注入するためのタンデイツシユ４
が位置し、このタンデイツシユ４の下部に、下方
に突出した中子５を設け、前記タンデイツシユ４
と中子５とは、溶湯３を注入するための注入口６
を有する。前記２本の冷却ロール１と、その幅方
向両端部のサイド堰２とにより湯だまり７の収容
部分を形成する。前記中子５の下端部は前記湯だ
まり７の中に潜没し、また、前記注入口６は、２
本の冷却ロール１の中心間距離のほぼ中間部に向
けて開口するように位置する。タンデイツシユ４
から注入口６を通つて溶湯３を注入すると、２本
の冷却ロール１と、その両端部のサイド堰２との
間に湯だまり７が形成され、湯だまり７の溶湯３
は冷却ロール１により冷却されて凝固殻８が形成
され、冷却ロール１の第３図矢印方向の回転によ
り薄板状の鋳片９が連続的に鋳造される。 As shown in FIGS. 3 and 4, a twin-roll continuous casting machine has two cooling rolls 1 spaced apart from each other and arranged substantially horizontally and parallelly, and side weirs 2 are arranged at both ends in the width direction. do. A tundish 4 for injecting the molten metal 3 is placed above the roll 1.
is located at the bottom of the tundish 4, and a core 5 protruding downward is provided at the bottom of the tundish 4.
The core 5 is an injection port 6 for injecting the molten metal 3.
has. The two cooling rolls 1 and the side weirs 2 at both ends in the width direction form a housing portion of the tundish pool 7. The lower end of the core 5 is submerged in the hot water pool 7, and the injection port 6 is
It is located so as to open toward approximately the middle of the center-to-center distance of the book cooling roll 1. tandateshiyu 4
When the molten metal 3 is injected through the injection port 6, a pool 7 is formed between the two cooling rolls 1 and the side weirs 2 at both ends, and the molten metal 3 in the pool 7 is
is cooled by the cooling roll 1 to form a solidified shell 8, and by rotating the cooling roll 1 in the direction of the arrow in FIG. 3, a thin slab 9 is continuously cast.
［考案が解決しようとする問題点］
双ロール式連鋳機において、第３図の従来技術
のように、タンデイツシユ４から溶湯３を中子５
を介して湯だまり７の形成部に注入する際に、溶
湯の圧力または流速が大きくこれがそのまま、冷
却ロール１によつて形成されている凝固殻８に作
用すると、この凝固殻８を再び溶解させる。そし
て、凝固殻８が溶解すると製造される鋳片９の厚
さが不均一になつたり、鋳片９に割れ、バルジン
グ（ふくれ）などが発生する。従つて、この凝固
殻の溶解防止のためには、中子５の注入口６から
出る溶湯の圧力または流速を小さくし、且つ直接
的に凝固殻に作用させないようにする対策が必要
となる。[Problems to be solved by the invention] In a twin-roll continuous casting machine, as in the prior art shown in FIG.
When the molten metal is injected into the forming part of the pool 7 through the molten metal, if the pressure or flow rate of the molten metal is high and this directly acts on the solidified shell 8 formed by the cooling roll 1, this solidified shell 8 is melted again. . When the solidified shell 8 is melted, the thickness of the manufactured slab 9 becomes uneven, the slab 9 cracks, and bulging occurs. Therefore, in order to prevent the solidified shell from dissolving, it is necessary to take measures to reduce the pressure or flow rate of the molten metal coming out of the injection port 6 of the core 5 and to prevent it from acting directly on the solidified shell.
本考案は、中子内部の溶湯流路中にマニホール
ドを設け、中子から出る溶湯の圧力または流速を
小さくすると共に直接凝固殻に作用しないように
した双ロール式連鋳機の注湯装置を提供すること
を目的とする。 The present invention is a pouring device for a twin-roll continuous casting machine that has a manifold in the molten metal flow path inside the core to reduce the pressure or flow rate of the molten metal coming out of the core and prevent it from directly acting on the solidified shell. The purpose is to provide.
［問題点を解決するための手段］
本考案は、上記実情に鑑みなされたものであ
り、水平且つ平行に設けた２本の冷却ロールと該
冷却ロールの両端部に配置したサイド堰とにより
湯だまりを形成し、前記湯だまりの上方に、下端
部が前記湯だまりに潜没し溶湯の注入路を有する
中子を設け、前記中子内部に、前記注入路と連通
するマニホールドを設け、前記中子下端部に、前
記マニホールドと連通し前記ロールと溶湯とが接
する点に向けて湯だまり内に開口する溶湯出口流
路を設けたことを特徴とするものである。[Means for Solving the Problems] The present invention was developed in view of the above-mentioned circumstances, and is made by using two cooling rolls installed horizontally and parallel to each other and side weirs placed at both ends of the cooling rolls. a core having a lower end submerged in the pool and having a molten metal injection path is provided above the pool; a manifold communicating with the injection path is provided inside the core; The core is characterized in that a molten metal outlet flow path is provided at the lower end of the core, communicating with the manifold and opening into the tundish pool toward the point where the roll and the molten metal come into contact.
［作用］
中子の注入路に溶湯を注入すると、溶湯は前記
注入路、マニホールド、出口流路を通り、２本の
冷却ロールと両端部サイド堰との間に湯だまりを
形成する。そして、湯だまりは冷却ロールにより
漸次冷却されて下部に凝固殻を形成する。このと
き、注入路を通つた溶湯は、いつたんマニホール
ド内に保持されて流速が減殺された後に、出口流
路から、前記ロールと溶湯とが接する点に向けて
流れ出る。従つて、下方に形成された凝固殻に大
きな流速をもつた溶湯が直接作用することがな
く、凝固殻の溶解が防止される。[Operation] When molten metal is injected into the injection path of the core, the molten metal passes through the injection path, the manifold, and the outlet flow path, and forms a pool between the two cooling rolls and the side weirs at both ends. The pool is then gradually cooled by cooling rolls to form a solidified shell at the bottom. At this time, the molten metal that has passed through the injection path is temporarily held in the manifold and its flow velocity is reduced, and then flows out from the outlet flow path toward the point where the roll and the molten metal contact. Therefore, the molten metal having a large flow rate does not directly act on the solidified shell formed below, and the solidified shell is prevented from dissolving.
［実施例］ 以下図面に基づき本考案の実施例を説明する。[Example] Embodiments of the present invention will be described below based on the drawings.
第１図及び第２図は本考案の一実施例を示し、
第３図及び第４図中で示したものと同一のものに
は同符号を付してある。 1 and 2 show an embodiment of the present invention,
Components that are the same as those shown in FIGS. 3 and 4 are given the same reference numerals.
２本の冷却ロール１が互いに径方向に間隔をお
いてほぼ水平且つ平行に設けられ、その幅方向両
端部にサイド堰２を配置し、前記２本の冷却ロー
ル１と、その幅方向両端部のサイド堰２とによ
り、湯だまり７を形成する。前記冷却ロール１の
上方に、溶湯３を注入するためのタンデイツシユ
４を配置し、このタンデイツシユ４の下部に、下
端部が前記湯だまり７の中に潜没し、前記ロール
１の幅方向両端部が前記サイド堰２に接する中子
１０を設ける。前記中子１０は、前記ロール１の
幅方向に、前記タンデイツシユ４の溶湯供給口１
１とそれぞれ連通する中間注入路１２、側方注入
路１３を有する。各注入路１２，１３は、前記２
本の冷却ロール１の中心間距離中間部に向けてほ
ぼ垂直に下降する。前記中子１０の内部にマニホ
ールド１４を設け、前記中間注入路１２の下端部
を前記マニホールド１４に連通させ、更に該マニ
ホールド１４に中子１０の出口流路１５を連通さ
せる。前記出口流路１５は、前記ロール１の幅方
向にスリツト状をなし、前記湯だまり７に潜没し
た状態で、前記ロール１と溶湯とが接する点１６
（凝固殻８の形成が始まる位置より上方）に向け
て出口１７が開口する。なお、側方注入路１３
は、冷却ロール１、サイド堰２、溶湯３に三重点
において凝固殻８が成長してロール１の回転によ
り鋳片９の幅端部に不良部が生ずるのを防止する
対策として、凝固殻８を溶解するために溶湯を積
極的に流す必要があるので、前記マニホールド１
４を設けない。 Two chill rolls 1 are provided substantially horizontally and parallel to each other at a radial distance from each other, with side dams 2 disposed at both ends in the width direction, and the two chill rolls 1 and the side dams 2 at both ends in the width direction form a molten metal pool 7. A tundish 4 for pouring molten metal 3 is disposed above the chill rolls 1, and a core 10 is provided below the tundish 4, the lower end of which is submerged in the molten metal pool 7 and both ends in the width direction of the roll 1 are in contact with the side dams 2. The core 10 is provided in the width direction of the roll 1, and is connected to the molten metal supply port 1 of the tundish 4.
The injection passages 12 and 13 are connected to the two injection passages 12 and 13, respectively.
The intermediate injection passage 12 is connected to the manifold 14, and the manifold 14 is connected to an outlet passage 15 of the core 10. The outlet passage 15 is slit-shaped in the width direction of the roll 1, and when the roll 1 is submerged in the molten metal puddle 7, the outlet passage 15 is connected to the manifold 14.
The outlet 17 opens toward the upper side (above the position where the formation of the solidified shell 8 begins).
In order to prevent the solidified shell 8 from growing at the triple point between the cooling roll 1, the side gate 2, and the molten metal 3, and causing defects at the width end of the slab 9 due to the rotation of the roll 1, it is necessary to actively flow the molten metal in order to melt the solidified shell 8.
No. 4 is set.
上述の構成において、タンデイツシユ４内の溶
湯３の供給口１１から供給すると、溶湯３は、中
子１０の中間注入路１２、マニホールド１４、出
口流路１５、及び側方注入路１３を通り、２本の
冷却ロール１と、その両側部のサイド堰２との間
に湯だまり７を形成する。前記中間流入路１２を
通る溶湯３は、該流入路１２の下端部に連通する
マニホールド１４の中にいつたん保持されて流速
が減殺された後に、スリツト状出口流路１５か
ら、ロール１と溶湯とが接する点１６に向けて流
れ出る。従つて、冷却ロール１により中子１０の
下方に形成された凝固殻８に大きな圧力または流
速の溶湯が直接作用することがなく、また、流れ
の方向もロール１と溶湯とが接する点１６に向い
ているために、凝固殻８の溶解が防止される。こ
れにより、湯だまり７に溶湯３を供給しても湯だ
まり７が安定し、厚さが均一で、割れやバルジン
グ（ふくれ）などのない良質の鋳片９が連続的に
製造される。 In the above configuration, when the molten metal 3 is supplied from the supply port 11 in the tundish 4, the molten metal 3 passes through the intermediate injection path 12, the manifold 14, the outlet flow path 15, and the side injection path 13 of the core 10, and A hot water pool 7 is formed between a book cooling roll 1 and side weirs 2 on both sides thereof. The molten metal 3 passing through the intermediate inflow path 12 is temporarily held in a manifold 14 communicating with the lower end of the inflow path 12 to reduce the flow velocity, and then flows through the slit-shaped outlet path 15 into the roll 1 and the molten metal. It flows out toward the point 16 where the two meet. Therefore, the molten metal with a large pressure or flow rate does not directly act on the solidified shell 8 formed below the core 10 by the cooling roll 1, and the flow direction is also directed to the point 16 where the roll 1 and the molten metal contact. This orientation prevents the solidified shell 8 from dissolving. As a result, even when the molten metal 3 is supplied to the molten metal pool 7, the molten metal pool 7 is stabilized, and high-quality slabs 9 with uniform thickness and no cracks or bulging are continuously produced.
［考案の効果］
本考案によれば、良質の鋳片を安定して鋳造す
ることができるので、歩留りが向上し、またドラ
ブルの発生を防止して双ロール式連鋳機の操業度
を高めるなどの優れた効果を奏し得る。[Effects of the invention] According to the invention, high-quality slabs can be stably cast, improving the yield and preventing the occurrence of drudges, thereby increasing the operating efficiency of the twin-roll continuous casting machine. It can produce excellent effects such as:
第１図は本考案の一実施例の説明図、第２図は
第１図のＡ−Ａ矢視図、第３図は従来技術の説明
図、第４図は第３図のＢ−Ｂ矢視図である。
図中１は冷却ロール、２はサイド堰、３は溶
湯、７は湯だまり、１０は中子、１２は注入路、
１４はマニホールド、１５は出口流路、１６はロ
ールと溶湯とが接する点を示す。
Fig. 1 is an explanatory diagram of one embodiment of the present invention, Fig. 2 is a view taken along the arrow A-A in Fig. 1, Fig. 3 is an explanatory diagram of the prior art, and Fig. 4 is an explanatory diagram taken from B-B in Fig. 3. It is an arrow view. In the figure, 1 is a cooling roll, 2 is a side weir, 3 is a molten metal, 7 is a molten metal pool, 10 is a core, 12 is an injection path,
14 is a manifold, 15 is an outlet flow path, and 16 is a point where the roll and the molten metal come into contact.
Claims (1)
却ロールの両端部に配置したサイド堰とにより湯
だまりを形成し、前記湯だまりの上方に、下端部
が前記湯だまりに潜没し溶湯の注入路を有する中
子を設け、前記中子内部に、前記注入路と連通す
るマニホールドを設け、前記中子下端部に、前記
マニホールドと連通し前記ロールと溶湯とが接す
る点に向けて湯だまり内に開口する溶湯出口流路
を設けたことを特徴とする双ロール式連鋳機の注
湯装置。 A molten metal pool is formed by two cooling rolls installed horizontally and in parallel and side weirs placed at both ends of the cooling rolls, and the lower end is submerged in the molten metal pool above the molten metal pool. A core having an injection path is provided, a manifold communicating with the injection path is provided inside the core, and a molten pool is provided at the lower end of the core, communicating with the manifold and extending toward a point where the roll and the molten metal contact. A pouring device for a twin-roll continuous caster, characterized by having a molten metal outlet channel that opens inward.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19374687U JPH05276Y2 (en) | 1987-12-21 | 1987-12-21 | |
| US07/279,997 US4865115A (en) | 1987-12-21 | 1988-12-05 | Pouring device for dual-roll type continuous casting machines |
| AU27002/88A AU610793B2 (en) | 1987-12-21 | 1988-12-16 | Pouring device for dual-roll type continuous casting machines |
| KR1019880016927A KR920004969B1 (en) | 1987-12-21 | 1988-12-19 | Pouring device for dual-roll type continuous casting machines |
| CN88108709A CN1035070A (en) | 1987-12-21 | 1988-12-20 | The apparatus for pouring of double-roller continuous casting machine |
| DE3842789A DE3842789A1 (en) | 1987-12-21 | 1988-12-20 | CASTING DEVICE FOR A TWO-ROLLING CONTINUOUS CASTING MACHINE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19374687U JPH05276Y2 (en) | 1987-12-21 | 1987-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01100647U JPH01100647U (en) | 1989-07-06 |
| JPH05276Y2 true JPH05276Y2 (en) | 1993-01-06 |
Family
ID=31484524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19374687U Expired - Lifetime JPH05276Y2 (en) | 1987-12-21 | 1987-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05276Y2 (en) |
-
1987
- 1987-12-21 JP JP19374687U patent/JPH05276Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01100647U (en) | 1989-07-06 |
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