JPH077007Y2 - Twin roll type continuous casting machine - Google Patents
Twin roll type continuous casting machineInfo
- Publication number
- JPH077007Y2 JPH077007Y2 JP9797989U JP9797989U JPH077007Y2 JP H077007 Y2 JPH077007 Y2 JP H077007Y2 JP 9797989 U JP9797989 U JP 9797989U JP 9797989 U JP9797989 U JP 9797989U JP H077007 Y2 JPH077007 Y2 JP H077007Y2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- cooling rolls
- inert gas
- frame body
- cooling
- 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
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は水平に且つ平行に配した一対の冷却ロールの間
隙を通して帯板を連続的に鋳造する双ロール型連続鋳造
機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a twin roll type continuous casting machine for continuously casting a strip through a gap between a pair of cooling rolls arranged horizontally and in parallel.
［従来の技術］ この種双ロール型連続鋳造機としては、第４図に一例を
示す如き構成としたものがある。すなわち、ロール内面
を水等で冷却できるようにしてある一対の冷却ロールa,
bを、水平に且つ平行に配設すると共に鋳造しようとす
る帯状の薄板ｃの厚さに対応した間隙に保持させて互い
に矢印で示す反対方向に回転駆動させるようにし、かつ
上記冷却ロールa,bの軸方向両端部の上方に、該冷却ロ
ールa,bの周面と接するサイドシールｄをそれぞれ設け
て、該両サイドシールｄと冷却ロールa,bの周面とによ
って囲まれる冷却ロールa,b間の部分に溶湯プールｅを
形成し、更に、上記冷却ロールa,bの上方部に、底部を
冷却ロールa,bの周面に沿う形状とし且つ該底部に注湯
ノズルｆを備えてなる溶湯桶ｇを、冷却ロールa,bの周
面から離して配設し、該溶湯桶ｇ内に供給された溶融金
属（溶湯）ｈを底部の注湯ノズルｆから上記溶湯プール
ｅに注湯し、回転する冷却ロールa,bの表面で溶融金属
ｈを凝固させつつ冷却ロールa,b間の間隙より帯状の薄
板ｃとして鋳出させるようにしたものがある（特開昭62
-9754号）。[Prior Art] As a twin roll type continuous casting machine of this kind, there is a twin roll type continuous casting machine having an arrangement as shown in FIG. That is, a pair of cooling rolls a, which can cool the inner surface of the rolls with water or the like,
b are arranged horizontally and parallel to each other and are held in a gap corresponding to the thickness of the strip-shaped thin plate c to be cast so that they are rotationally driven in the opposite directions shown by the arrows, and the cooling roll a, Side seals d that are in contact with the peripheral surfaces of the cooling rolls a and b are provided above both axial ends of b, and the cooling roll a is surrounded by the side seals d and the peripheral surfaces of the cooling rolls a and b. A molten metal pool e is formed in a portion between the cooling rolls a and b, and a bottom part is formed along the peripheral surface of the cooling rolls a and b at the upper part of the cooling rolls a and b, and a pouring nozzle f is provided at the bottom part. The molten metal tub g formed by arranging the molten metal is separated from the peripheral surfaces of the cooling rolls a and b, and the molten metal (molten metal) h supplied in the molten metal tub g is poured from the bottom pouring nozzle f into the molten metal pool e. Between the cooling rolls a and b while pouring and solidifying the molten metal h on the surface of the rotating cooling rolls a and b There is a strip-shaped thin plate c that is cast out from the gap (Japanese Patent Laid-Open No. Sho 62-62).
-9754).
［考案が解決しようとする課題］ ところが、上記従来の双ロール型連続鋳造機の場合、溶
融金属ｈが溶湯プールｅ内の溶湯桶ｇと冷却ロールa,b
との間で滞留する傾向があり、特に上記溶湯桶ｇと一対
の冷却ロールa,bとの間にある溶融金属ｈの上部のもの
が滞留し易く、この傾向は冷却ロールa,b間の間隙が狭
いほど顕著である。又、溶融金属ｈは溶湯プールｅ内で
直接空気に触れるため酸化被膜が形成され易く、鋳出さ
れる帯状薄板ｃの製品品質に悪影響を与える問題があっ
た。[Problems to be Solved by the Invention] However, in the case of the conventional twin roll type continuous casting machine, the molten metal h is the molten metal tub g in the molten metal pool e and the cooling rolls a and b.
And the upper part of the molten metal h between the molten metal tank g and the pair of cooling rolls a and b tends to stay. The narrower the gap, the more remarkable. Further, since the molten metal h directly contacts the air in the molten metal pool e, an oxide film is likely to be formed, and there is a problem that the product quality of the strip thin plate c to be cast is adversely affected.
なお、上記特開昭62-9754号公報に示された双ロール型
連続鋳造機のほかに、連続鋳造機としては、特開昭60-2
61645号、特開昭62-21445号公報等に開示されたものが
あるが、これらいずれの連続鋳造機の場合も、上述した
如き問題点を同様に有している。Incidentally, in addition to the twin roll type continuous casting machine shown in JP-A-62-9754, as a continuous casting machine, there is JP-A-60-2.
There are those disclosed in Japanese Patent No. 61645, Japanese Patent Laid-Open No. 62-21445, and the like, but any of these continuous casting machines similarly has the above-mentioned problems.
そこで、本考案は、溶湯桶と冷却ロールとの間での溶融
金属の滞留を防止できるようにすると共に、溶融金属の
酸化を防止することができるようにしようとするもので
ある。Therefore, the present invention is intended to prevent the molten metal from staying between the molten metal trough and the cooling roll and to prevent the molten metal from being oxidized.
［課題を解決するための手段］ 本考案は、上記課題を解決するために、水平に且つ平行
に配して互に逆の方向へ回転できるようにした一対の冷
却ロールを備え、該一対の冷却ロールの上部に、バレル
シール板とサイドシール板と上板とからなる枠体を該冷
却ロールに接するように配置し、且つ上記枠体の内側
に、底板に注湯ノズルを備えてなる溶湯桶を上記上板を
貫通させて配設し、更に、上記枠体の内面と上記溶湯桶
の外面と上記冷却ロール表面との間に形成される空間内
に不活性ガスを導入するための不活性ガス導入管を、上
記枠体に接続してなる構成とする。[Means for Solving the Problems] In order to solve the above problems, the present invention includes a pair of cooling rolls arranged horizontally and in parallel so as to be rotatable in mutually opposite directions. A molten metal having a frame body composed of a barrel seal plate, a side seal plate and an upper plate arranged on the upper part of the cooling roll so as to be in contact with the cooling roll, and a bottom plate having a pouring nozzle inside the frame body. A tub is arranged so as to pass through the upper plate, and a space for introducing an inert gas into the space formed between the inner surface of the frame body, the outer surface of the molten metal tub and the surface of the cooling roll. The active gas introducing pipe is connected to the frame body.
［作用］ 一対の冷却ロールを回転させると、溶湯桶の注湯ノズル
から冷却ロール間の上部に供給された溶融金属が冷却ロ
ールの表面で凝固させられて冷却ロール間より帯状の薄
板として鋳出されるが、この際、不活性ガス導入管によ
り枠体内に不活性ガスを導入すると、導入された不活性
ガスの圧力により溶融金属に押込み力を与えて一対の冷
却ロール間への押込み作用を助長させることができるた
め、溶湯桶と一対の冷却ロールとの間での溶融金属の滞
留が防止される。又、不活性ガスが溶融金属に接触させ
られるため、溶融金属の酸化が防止され酸化皮膜が形成
されることがなくなる。[Operation] When the pair of cooling rolls are rotated, the molten metal supplied from the pouring nozzle of the molten metal tub to the upper portion between the cooling rolls is solidified on the surface of the cooling rolls and is cast as a strip-shaped thin plate between the cooling rolls. However, at this time, if the inert gas is introduced into the frame by the inert gas introduction pipe, the pressure of the introduced inert gas gives a pushing force to the molten metal to promote the pushing action between the pair of cooling rolls. Therefore, the molten metal is prevented from staying between the molten metal tub and the pair of cooling rolls. Further, since the inert gas is brought into contact with the molten metal, the molten metal is prevented from being oxidized and an oxide film is not formed.
［実施例］ 以下、図面に基づき本考案の実施例を説明する。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
第１図及び第２図は本考案の一実施例を示すもので、ロ
ール内面を水等で冷却できるようにしてある一対の冷却
ロール1,2を、水平に且つ平行に配置すると共に鋳造し
ようとする帯状薄板３の厚さに対応させた間隙Ｇに保持
させて互い反対方向へ回転できるように配設し、一対の
冷却ロール1,2を回転させて溶融金属（溶湯）４を上記
一対の冷却ロール１と２の間隙Ｇに導くことにより溶融
金属４を冷却ロール1,2の表面で凝固させつつ送り出
し、上記間隙Ｇで規制される厚さの薄板３を帯状に連続
的に鋳出させられるようにする。上記一対の冷却ロール
1,2上には、一対の冷却ロール1,2の軸心方向に延びる一
対のバレルシール板５と、該両バレルシール板５の両端
部でそれぞれバレルシール板５の端を閉塞するサイドシ
ール板６と、上記各バレルシール板５とサイドシール板
６とで囲まれる空間部の上面を塞ぐ上板７とからなる枠
体８を、上記両バレルシール板５と両サイドシール板６
の下端が各冷却ロール1,2に接するように配設すると共
に、該枠体８の上記各サイドシール板５と冷却ロール1,
2の周面とで囲まれる部分に溶湯プールＰを形成する。
又、上記冷却ロール1,2の上方部には、底板９を一対の
冷却ロール1,2の周面に沿わせて円弧面を有するＶ字形
状とし且つ該底板９に注湯ノズル10を備えてなる中子式
の溶湯桶11を、上記枠体８の上板７を貫通させて枠体８
の内側に昇降自在に配設すると共に、該溶湯桶11の上端
に設けたフランジ12と上記枠体８の上板７との間に、溶
湯桶11を昇降させて底板９と冷却ロール1,2との間の隙
間を調節するための昇降装置13を設置し、更に、上記枠
体８には、溶湯プールＰの上部空間に不活性ガスを導入
するための不活性ガス導入管14を接続し、枠体８と溶湯
桶11と一対の冷却ロール1,2とで構成される空間Ａ内
に、上記不活性ガス導入管14より不活性ガスを導入する
ことによって、溶湯プールＰに位置する溶融金属４に冷
却ロール1,2間の間隙Ｇへの押込み力を与えられるよう
にすると共に溶融金属４の酸化を防止させられるように
する。なお、15は枠体８の上板７と溶湯桶11の外側部と
の摺動部をシールして枠体８と溶湯桶11との間を気密状
態にするためのシール材、16は枠体８内の不活性ガスの
圧力を検出するために不活性ガス導入管14に設けた圧力
検出器、17は不活性ガス導入管14に設けた開閉弁であ
る。FIGS. 1 and 2 show an embodiment of the present invention. A pair of cooling rolls 1 and 2 whose inner surfaces can be cooled with water or the like are arranged horizontally and in parallel and cast. The gap is made to correspond to the thickness of the strip-shaped thin plate 3 and is arranged so as to be able to rotate in mutually opposite directions, and the pair of cooling rolls 1 and 2 are rotated to form the molten metal (molten metal) 4 in the above-mentioned pair. The molten metal 4 is sent while being solidified on the surfaces of the cooling rolls 1 and 2 by being guided to the gap G between the cooling rolls 1 and 2, and the thin plate 3 having a thickness regulated by the gap G is continuously cast into a strip shape. To be allowed to. The pair of cooling rolls
A pair of barrel seal plates 5 extending in the axial direction of the pair of cooling rolls 1 and 2 are provided on the side walls 1 and 2, and side seals for closing the ends of the barrel seal plates 5 at both ends of the barrel seal plates 5. A frame body 8 including a plate 6 and an upper plate 7 that closes the upper surface of a space surrounded by the barrel seal plates 5 and the side seal plates 6 is provided with the barrel seal plates 5 and the side seal plates 6.
Is arranged so that the lower end of each of the cooling rolls 1 and 2 is in contact with each of the cooling rolls 1, 2, and the side seal plates 5 of the frame 8 and the cooling rolls 1, 2 are
A molten metal pool P is formed in a portion surrounded by the peripheral surface of 2.
Further, a bottom plate 9 is formed in a V shape having an arc surface along the peripheral surfaces of the pair of cooling rolls 1 and 2 above the cooling rolls 1 and 2, and a pouring nozzle 10 is provided on the bottom plate 9. The core type molten metal tub 11 formed by passing through the upper plate 7 of the frame 8
It is arranged so as to be able to move up and down inside, and between the flange 12 provided at the upper end of the molten metal tub 11 and the upper plate 7 of the frame body 8, the molten metal tub 11 is moved up and down to form the bottom plate 9 and the cooling roll 1. An elevating device 13 for adjusting the clearance between the two is installed, and an inert gas introducing pipe 14 for introducing an inert gas into the upper space of the molten metal pool P is connected to the frame body 8. Then, by introducing an inert gas from the inert gas introducing pipe 14 into the space A formed by the frame body 8, the molten metal vat 11 and the pair of cooling rolls 1 and 2, the molten metal is positioned in the molten metal pool P. The molten metal 4 is provided with a pushing force into the gap G between the cooling rolls 1 and 2, and the molten metal 4 is prevented from being oxidized. Reference numeral 15 is a sealing material for sealing the sliding portion between the upper plate 7 of the frame body 8 and the outer portion of the molten metal trough 11 so that the space between the frame body 8 and the molten metal trough 11 is airtight, and 16 is the frame. A pressure detector provided in the inert gas introducing pipe 14 for detecting the pressure of the inert gas in the body 8 and an on-off valve 17 provided in the inert gas introducing pipe 14.
帯状に薄板３を連続鋳造する場合には、先ず、昇降装置
13を操作することにより溶湯桶11の昇降位置を調整して
該溶湯桶11の底板９と冷却ロール1,2との間の隙間を所
要の寸法に設定し、更に、不活性ガス導入管14を通して
枠体８内の空間Ａに不活性ガスを所要の送給圧力で導入
する。この状態で、図示しないタンディッシュから上記
溶湯桶11内に溶融金属４を注湯すると、溶融金属４は、
溶湯桶11の底部９に設けてある注湯ノズル10から冷却ロ
ール1,2上部の溶湯プールＰ内に供給され、冷却ロール
1,2に接することにより初期の凝固殻が形成される。こ
の時点で、一対の冷却ロール1,2を矢印方向へ互に逆の
方向へ回転させると同時に、不活性ガス導入管14からの
不活性ガスの供給圧を所定圧に制御する。上記冷却ロー
ル1,2が回転させられると、溶湯プールＰ内の溶融金属
４は、冷却ロール1,2の回転に伴い冷却ロール1,2の表面
で冷却されて漸次凝固殻を発達させつつ間隙Ｇ部に導か
れ、該間隙Ｇ部で圧延されることにより薄板３として連
続的に鋳出される。この際、上記溶湯プールＰの上部の
空間Ａには、所要の圧力がかけられた状態で不活性ガス
が導入されており、この不活性ガスの圧力が溶融金属４
に間隙Ｇへの押込み力として作用するため、溶融金属４
は積極的に下方へと押圧されて流されることになり、溶
湯桶11と冷却ロール1,2との間に溶融金属４が滞留する
ようなことが防止される。又、上記溶湯プールＰの上部
の空間Ａに不活性ガスが導入されていることから、溶湯
プールＰ内の溶融金属４は直接空気に触れることはなく
て酸化皮膜が形成されるようなことがなく、したがっ
て、酸化皮膜の混入により薄板３の製品品質に悪影響を
与えてしまうこともない。When continuously casting the thin plate 3 into a strip shape, first, the lifting device
By operating 13 to adjust the ascending / descending position of the molten metal trough 11 to set the gap between the bottom plate 9 of the molten metal trough 11 and the cooling rolls 1 and 2 to a required size, and further, the inert gas introducing pipe 14 Inert gas is introduced into the space A in the frame body 8 through the chamber at a required feed pressure. In this state, when the molten metal 4 is poured from the tundish (not shown) into the molten metal tub 11, the molten metal 4 is
It is supplied from the pouring nozzle 10 provided in the bottom portion 9 of the molten metal trough 11 into the molten metal pool P above the cooling rolls 1 and 2,
The initial solidified shell is formed by touching 1,2. At this point, the pair of cooling rolls 1 and 2 are rotated in the directions opposite to each other in the arrow directions, and at the same time, the supply pressure of the inert gas from the inert gas introduction pipe 14 is controlled to a predetermined pressure. When the cooling rolls 1 and 2 are rotated, the molten metal 4 in the molten metal pool P is cooled on the surfaces of the cooling rolls 1 and 2 as the cooling rolls 1 and 2 rotate, and gradually develops a solidified shell to form a gap. The thin plate 3 is continuously cast by being guided to the G portion and being rolled in the gap G portion. At this time, the inert gas is introduced into the space A above the molten metal pool P under a required pressure, and the pressure of this inert gas is the molten metal 4
Acts as a pushing force to the gap G on the molten metal 4
Will be positively pressed and flowed downward, and the molten metal 4 will be prevented from staying between the molten metal trough 11 and the cooling rolls 1 and 2. Further, since the inert gas is introduced into the space A above the molten metal pool P, the molten metal 4 in the molten metal pool P does not come into direct contact with air and an oxide film is formed. Therefore, the product quality of the thin plate 3 is not adversely affected by the inclusion of the oxide film.
なお、上記実施例では、枠体８と溶湯桶11との間を気密
状態にするために、枠体８の上板７と溶湯桶11の外側部
との揺動部にシール材15を設けた場合を示したが、たと
えば、第３図に示す如く、枠体８の上板７と溶湯桶11の
フランジ12の間に、スプリング18によって常時フランジ
12に押し付けられるような状態でシール材15を設けても
よく、その他、本考案の要旨を逸脱しない範囲内におい
て種々変更を加え得ることは勿論である。In the above embodiment, in order to make the space between the frame 8 and the molten metal trough 11 airtight, the seal member 15 is provided on the swinging portion between the upper plate 7 of the frame 8 and the outer side of the molten metal trough 11. As shown in FIG. 3, for example, as shown in FIG. 3, a flange 18 is constantly provided between the upper plate 7 of the frame 8 and the flange 12 of the molten metal trough 11 by a spring 18.
The sealing material 15 may be provided in a state of being pressed against the twelve, and it is needless to say that other various modifications can be made without departing from the scope of the invention.
［考案の効果］ 以上述べた如く、本考案の双ロール型連続鋳造機によれ
ば、冷却ロールの上部に、枠体を該冷却ロールに接する
ように配置すると共に、該枠体の内側に溶湯桶を配設
し、且つ上記枠体と溶湯桶と一対の冷却ロールとで構成
される空間内に不活性ガス導入管により不活性ガスを導
入できるように構成したので、枠体内に導入される不活
性ガスの圧力により溶融金属に冷却ロール間への押込み
力を作用させることができて溶湯桶と冷却ロールとの間
での溶融金属の滞留を防止することができると共に、不
活性ガスにより溶融金属の酸化を防止することができ
る、という優れた効果を発揮する。[Effects of the Invention] As described above, according to the twin roll type continuous casting machine of the present invention, the frame is disposed above the cooling roll so as to be in contact with the cooling roll, and the molten metal is provided inside the frame. Since the tub is provided and the inert gas can be introduced by the inert gas introducing pipe into the space formed by the frame, the molten metal tub and the pair of cooling rolls, the tub is introduced into the frame. The pressure of the inert gas makes it possible to exert a pushing force on the molten metal between the cooling rolls to prevent the molten metal from staying between the molten metal trough and the cooling roll, and at the same time, to melt the molten metal with the inert gas. It has an excellent effect of preventing metal oxidation.
第１図は本考案の双ロール型連続鋳造機の一実施例を示
す概要図、第２図は第１図のII-II矢視図、第３図は枠
体と溶湯桶との間のシール機構の他の例を示す概略図、
第４図は従来の双ロール型連続鋳造機の一例を示す概要
図である。 1,2……冷却ロール、５……バレルシール板、６……サ
イドシール板、７……上板、８……枠体、９……底板、
10……注湯ノズル、11……溶湯桶、14……不活性ガス導
入管、15……シール材、Ａ……空間。Fig. 1 is a schematic view showing an embodiment of the twin roll type continuous casting machine of the present invention, Fig. 2 is a view taken along the line II-II of Fig. 1, and Fig. 3 is a view between the frame and the molten metal tub. Schematic diagram showing another example of the sealing mechanism,
FIG. 4 is a schematic view showing an example of a conventional twin roll type continuous casting machine. 1,2 ... Cooling roll, 5 ... Barrel seal plate, 6 ... Side seal plate, 7 ... Top plate, 8 ... Frame body, 9 ... Bottom plate,
10 …… pouring nozzle, 11 …… molten metal trough, 14 …… inert gas introduction pipe, 15 …… sealing material, A …… space.
Claims (1)
転できるようにした一対の冷却ロールを備え、該一対の
冷却ロールの上部に、バレルシール板とサイドシール板
と上板とからなる枠体を該冷却ロールに接するように配
置し、且つ上記枠体の内側に、底板に注湯ノズルを備え
てなる溶湯桶を上記上板を貫通させて配設し、更に、上
記枠体の内面と上記溶湯桶の外面と上記冷却ロール表面
との間に形成される空間内に不活性ガスを導入するため
の不活性ガス導入管を、上記枠体に接続してなることを
特徴とする双ロール型連続鋳造機。1. A pair of cooling rolls arranged horizontally and parallel to each other so that they can rotate in mutually opposite directions, and a barrel seal plate, a side seal plate and an upper plate are provided above the pair of cooling rolls. A frame body made of and is placed in contact with the cooling roll, and a molten metal tub having a bottom plate provided with a pouring nozzle is disposed inside the frame body so as to penetrate the upper plate, and An inert gas introducing pipe for introducing an inert gas into the space formed between the inner surface of the frame body, the outer surface of the molten metal tub and the surface of the cooling roll, is connected to the frame body. Characteristic twin roll type continuous casting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9797989U JPH077007Y2 (en) | 1989-08-24 | 1989-08-24 | Twin roll type continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9797989U JPH077007Y2 (en) | 1989-08-24 | 1989-08-24 | Twin roll type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0342350U JPH0342350U (en) | 1991-04-22 |
| JPH077007Y2 true JPH077007Y2 (en) | 1995-02-22 |
Family
ID=31647099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9797989U Expired - Fee Related JPH077007Y2 (en) | 1989-08-24 | 1989-08-24 | Twin roll type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH077007Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101537972B1 (en) * | 2013-08-30 | 2015-07-20 | 주식회사 포스코 | Apparatus for casting strip of magnesium alloy |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005230826A (en) * | 2004-02-17 | 2005-09-02 | Ishikawajima Harima Heavy Ind Co Ltd | Nozzle for supplying molten metal |
-
1989
- 1989-08-24 JP JP9797989U patent/JPH077007Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101537972B1 (en) * | 2013-08-30 | 2015-07-20 | 주식회사 포스코 | Apparatus for casting strip of magnesium alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0342350U (en) | 1991-04-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |