JPH0464775B2 - - Google Patents
Info
- Publication number
- JPH0464775B2 JPH0464775B2 JP12025884A JP12025884A JPH0464775B2 JP H0464775 B2 JPH0464775 B2 JP H0464775B2 JP 12025884 A JP12025884 A JP 12025884A JP 12025884 A JP12025884 A JP 12025884A JP H0464775 B2 JPH0464775 B2 JP H0464775B2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- weir frame
- molten metal
- horizontal
- tundish
- 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
Links
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 238000005266 casting Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 238000009749 continuous casting Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 29
- 239000010959 steel Substances 0.000 description 29
- 238000009826 distribution Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 239000012056 semi-solid material Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 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
- B22D11/064—Accessories therefor for supplying molten metal
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〕
本発明は板切れ或いは板割れを防止すると共に
板厚分布の均一化を図つた連続鋳造方向及びその
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a continuous casting method and an apparatus therefor, which prevent plate breakage or plate cracking and achieve uniform plate thickness distribution.
帯板を連続的に鋳造する装置としては、第１図
及び第２図に示すような双ロール式の連続鋳造装
置がある。図中１は左右一対の水平ロール、２は
堰枠、３は堰枠２に溶鋼４を供給するタンデイツ
シユであり、堰枠２はバレルシール２ａ及びサイ
ドシール２ｂより構成されている。
As an apparatus for continuously casting strips, there is a twin roll type continuous casting apparatus as shown in FIGS. 1 and 2. In the figure, 1 is a pair of left and right horizontal rolls, 2 is a weir frame, and 3 is a tundish that supplies molten steel 4 to the weir frame 2. The weir frame 2 is composed of a barrel seal 2a and a side seal 2b.
タンデイツシユ３から堰枠２に供給された溶鋼
４は矢印Ｘ方向に回転し内部に冷却流体が導入さ
れている水平ロール１により冷却されて水平ロー
ル１表面側から凝固シエル５が形成され、該凝固
シエル５は徐々に成長してロールギヤツプ６から
下方へ引抜かれ、帯板７が鋳造される。 The molten steel 4 supplied from the tundish 3 to the weir frame 2 rotates in the direction of arrow The shell 5 gradually grows and is pulled downwardly from the roll gap 6, and the strip 7 is cast.
しかるに、上述の従来装置では、溶鋼４はサイ
ドシール２ｂ側が中央部より早く冷却されて温度
が下降するため、該サイドシール２ｂ内側面のロ
ールギヤツプ上部で半凝固物８が異常成長し、該
半凝固物８は脱落してロールギヤツプ６内に巻込
まれる。而して、半凝固物８がロールギヤツプ６
内に巻込まれると、鋳造中に板切れが生じたり或
いは板割れが生じる虞れがある。又半凝固物８が
ロールギヤツプ６内に巻込まれることにより帯板
７表面に凹凸が生じ、製品の板厚分布が不均一に
なる虞れがある。
However, in the conventional apparatus described above, the side seal 2b side of the molten steel 4 is cooled faster than the central part, and the temperature decreases, so that the semi-solid material 8 grows abnormally at the upper part of the roll gap on the inner surface of the side seal 2b, and the semi-solid material 4 is The object 8 falls off and gets rolled into the roll gap 6. Thus, the semi-solidified material 8 is transferred to the roll gap 6.
If it gets caught inside, there is a risk that the plate will break or crack during casting. Furthermore, as the semi-solidified material 8 is rolled into the roll gap 6, unevenness may occur on the surface of the strip plate 7, which may result in uneven thickness distribution of the product.
本発明は上述の実情に鑑み、鋳造鋳に板切れや
板割れが生ずることを防止すると共に均一な板厚
分布の製品を得ることのできる連続鋳造方法及び
装置を提供することを目的としてなしたものであ
る。 In view of the above-mentioned circumstances, the present invention has been made with the object of providing a continuous casting method and apparatus that can prevent plate breakage and plate cracking from occurring in casting and can obtain products with uniform plate thickness distribution. It is something.
本発明のうち第１の発明は、相対向部が下方へ
向けて回転する左右一対の水平ロール上に配設し
た堰枠にタンデイツシユから溶湯を供給し、該溶
湯を水平ロールにより冷却することにより形成さ
れた鋳片を、前記水平ロール間のロールギヤツプ
から下方へ引抜いて連続的に帯板を鋳造する方法
において、堰枠内を水平ロールの軸線方向へ向つ
て複数の室に分割し、分割された堰枠の各室のう
ち水平ロールの軸線方向に対し両側の室に注湯さ
れる溶湯の液面高さを、堰枠の他の室に注湯され
る溶湯の液面高さよりも低くし、水平ロールの軸
線方向両端部における凝固シエルと水平ロール間
の熱伝達率を水平ロールの軸線方向両端部以外の
部分における凝固シエルと水平ロール間の熱伝達
率より小さくするものであり、第２の発明は、相
対向部が下方へ向けて回転する左右一対の水平ロ
ールと、水平ロール上に配設した堰枠と、堰枠内
に溶湯を供給するタデイツシユを備え、堰枠内に
供給された溶湯を水平ロールにより冷却すること
により形成された鋳片を、前記水平ロール間のロ
ールギヤツプから下方へ引抜いて連続的に帯板を
鋳造する装置において、堰枠内を水平ロールの軸
方向へ向つて複数の室に分割し、堰枠内の各室に
溶湯を供給するよう、タンデイツシユの下部に各
室に対応して設けられたタンデイツシユノズルの
うち水平ロールの軸線方向両端部に位置するタン
デイツシユノズルの長さを、他の部分に位置する
タンデイツシユノズルの長さよりも長くしたもの
である。
The first aspect of the present invention is to supply molten metal from a tundish to a weir frame disposed on a pair of left and right horizontal rolls whose opposing parts rotate downward, and to cool the molten metal by the horizontal rolls. In the method of continuously casting a strip by pulling the formed slab downward from the roll gap between the horizontal rolls, the inside of the weir frame is divided into a plurality of chambers in the axial direction of the horizontal rolls, The height of the liquid level of the molten metal poured into the chambers on both sides in the axial direction of the horizontal roll is lower than the liquid level of the molten metal poured into the other chambers of the weir frame. The heat transfer coefficient between the solidified shell and the horizontal roll at both ends of the horizontal roll in the axial direction is made smaller than the heat transfer coefficient between the solidified shell and the horizontal roll at the parts other than both ends of the horizontal roll in the axial direction. The second invention comprises a pair of left and right horizontal rolls whose opposing parts rotate downward, a weir frame disposed on the horizontal rolls, and a water tray for supplying molten metal into the weir frame. In an apparatus that continuously casts a strip by pulling the slab formed by cooling the molten metal with horizontal rolls downward from the roll gap between the horizontal rolls, The tundish nozzles are located at both ends in the axial direction of the horizontal roll, among the tundish nozzles provided at the bottom of the tundish, corresponding to each chamber, so as to supply molten metal to each chamber in the weir frame. The length of the tundish nozzle located in the other part is made longer than the length of the tundish nozzle located in other parts.
而して、本発明においては、水平ロール軸線方
向両端部における凝固シエルと水平ロール間の熱
伝達率は、水平ロールの軸線方向両端部以外の部
分における凝固シエルと水平ロール間の熱伝達率
よりも小さくなるため、堰枠の水平ロール軸線方
向両端部の室に供給された溶湯は堰枠の水平ロー
ル軸線方向両端部以外の室に供給された溶湯より
も冷却されにくくなり、堰枠の水平ロール軸線方
向両端部に凝固物が異常発生することを防止でき
る。 Accordingly, in the present invention, the heat transfer coefficient between the solidified shell and the horizontal roll at both axial ends of the horizontal roll is higher than the heat transfer coefficient between the solidified shell and the horizontal roll at a portion other than both axial ends of the horizontal roll. Since the molten metal supplied to the chambers at both ends of the weir frame in the horizontal roll axis direction becomes smaller, the molten metal supplied to the chambers at both ends of the weir frame in the horizontal roll axis direction becomes more difficult to cool than the molten metal supplied to chambers other than the horizontal roll axis direction both ends of the weir frame. It is possible to prevent abnormal formation of coagulated material at both ends in the axial direction of the roll.
以下、本発明の実施例を添付図面を参照しつつ
説明する。
Embodiments of the present invention will be described below with reference to the accompanying drawings.
第３図〜第８図は本発明の一実施例を示し、堰
枠２内には、サイドシール２ｂと平行な２組の中
間仕切板２ｃが固着され、室９ａ，９ｂ，９ｃが
形成されている。中間仕切板２ｃの深さ方向寸法
H1はサイドシール２ｂの深さ方向寸法H2より小
さく、各室９ａ，９ｂ，９ｃは中間仕切板２ｃの
下部空間部１０を介して互に連通している。 3 to 8 show an embodiment of the present invention, in which two sets of intermediate partition plates 2c parallel to the side seals 2b are fixed in the weir frame 2 to form chambers 9a, 9b, and 9c. ing. Depth dimension of intermediate partition plate 2c
H 1 is smaller than the depth dimension H 2 of the side seal 2b, and the chambers 9a, 9b, 9c communicate with each other via the lower space 10 of the intermediate partition plate 2c.
タンデイツシユ３には、堰枠２内の各室９ａ，
９ｂ，９ｃに別個に溶鋼を供給し得るよう、３本
のノズル１１ａ，１１ｂ，１１ｃが設けられ、両
側のノズル１１ｂ，１１ｃは真中のノズル１１ａ
より長く形成されている。 In the tandate 3, each chamber 9a in the weir frame 2,
Three nozzles 11a, 11b, 11c are provided so that molten steel can be supplied separately to 9b, 9c, and the nozzles 11b, 11c on both sides are connected to the middle nozzle 11a.
formed longer.
ノズル１１ａ，１１ｂ，１１ｃの下端が各室９
ａ，９ｂ，９ｃにたまつている溶鋼の液面より上
方にあると、ノズル１１ａ，１１ｂ，１１ｃから
各室９ａ，９ｂ，９ｃへ溶鋼を供給する際にノズ
ル１１ａ，１１ｂ，１１ｃの下端から流下する溶
鋼に空気が巻込まれ、安定した溶鋼の供給ができ
ない。このため、定常運転時にはノズル１１ａ，
１１ｂ，１１ｃは堰枠２の各室９ａ，９ｂ，９ｃ
にたまつている溶鋼内に浸漬させる必要がある。
しかし、仮にノズル１１ａを長くするノズル１１
ａ，１１ｂ，１１ｃと同じ長さにすると、各室９
ａ，９ｂ，９ｃの溶鋼の液面は、室９ａにおいて
高く室９ｂ，９ｃにおいて低いためノズル１１ａ
の溶鋼に対する浸漬深さが大きくなり、ノズル１
１ａの寿命が短くなる。このためノズルの溶鋼に
対する浸漬長さは、できるだけ短い方が良い。 The lower ends of the nozzles 11a, 11b, 11c are in each chamber 9.
If the molten steel is above the level of the molten steel accumulated in the chambers 11a, 11b, 9c, the lower ends of the nozzles 11a, 11b, 11c are Air is trapped in the flowing molten steel, making it impossible to provide a stable supply of molten steel. Therefore, during steady operation, the nozzles 11a,
11b, 11c are the respective chambers 9a, 9b, 9c of the weir frame 2
It is necessary to immerse the steel into the molten steel.
However, if the nozzle 11a is made longer,
If the length is the same as a, 11b, and 11c, each chamber 9
The liquid level of the molten steel in chambers a, 9b, and 9c is high in chamber 9a and low in chambers 9b and 9c, so nozzle 11a
The immersion depth in the molten steel becomes larger, and nozzle 1
The life of 1a becomes shorter. For this reason, it is preferable that the immersion length of the nozzle in the molten steel be as short as possible.
以上のことが、両端のノズル１１ｂ，１１ｃは
真中のノズル１１ａより長くする理由である。 The above is the reason why the nozzles 11b and 11c at both ends are made longer than the nozzle 11a in the middle.
又、ノズル１１ａ，１１ｂ，１１ｃの水平断面
積は、ノズル１１ａで大きく、ノズル１１ｂ，１
１ｃで小さくする。これは、真中のノズル１１ａ
の溶鋼流量を多くし両端のノズル１１ｂ，１１ｃ
の溶鋼流量を少くして、真中の室９ａの溶鋼の液
面高さを高くし、両側の室９ｂ，９ｃの溶鋼の液
面高さを低くするためである。又一旦、各室９
ａ，９ｂ，９ｃの溶鋼液面高さが調節されれば、
各ノズル１１ａ，１１ｂ，１１ｃの下端近傍は絶
えず半凝固物が生成され、溶鋼の流下する量を調
整する役割を果たしているから、各室９ａ，９
ｂ，９ｃ内の溶鋼液面高さが水の場合のように同
じになることはない。図中第１図及び第２図に示
す符号と同一の符号のものは同一のものを示す。 Further, the horizontal cross-sectional area of the nozzles 11a, 11b, 11c is large for the nozzle 11a, and for the nozzles 11b, 11c.
Make it smaller with 1c. This is the middle nozzle 11a
The nozzles 11b and 11c at both ends increase the flow rate of molten steel.
This is to reduce the flow rate of molten steel in the middle chamber 9a to raise the molten steel level in the middle chamber 9a, and lower the molten steel level in the chambers 9b and 9c on both sides. Once again, each room 9
If the molten steel level heights of a, 9b, and 9c are adjusted,
A semi-solid substance is constantly generated in the vicinity of the lower end of each nozzle 11a, 11b, 11c and plays the role of adjusting the amount of molten steel flowing down, so each chamber 9a, 9
The heights of the molten steel in b and 9c are never the same as in the case of water. In the drawings, the same reference numerals as those shown in FIGS. 1 and 2 indicate the same components.
鋳造に際しては、タンデイツシユ３からノズル
１１ａ，１１ｂ，１１ｃを介して堰枠２の室９
ａ，９ｂ，９ｃに溶鋼を注湯するが、この場合、
室９ａに供給された溶鋼の液面高さをh1、室９
ｂ，９ｃに供給された溶鋼の液面高さをh2とする
と、h1＞h2になるようにする。これは発明者等が
種々の実験を行つた結果、次のことが判明したた
めである。 During casting, the chamber 9 of the weir frame 2 is poured from the tundish 3 through the nozzles 11a, 11b, 11c.
Molten steel is poured into a, 9b, and 9c, but in this case,
The liquid level height of the molten steel supplied to chamber 9a is h 1 , chamber 9
Let h 2 be the liquid level height of the molten steel supplied to b and 9 c, so that h 1 > h 2 . This is because the inventors conducted various experiments and found the following.
すなわち、第８図に示すごとく、縦軸に回転モ
ールドである水平ロールと凝固シエルとの間の熱
伝達係数α（Ｗ／m2℃）をとり横軸に溶鋼と水平
ロールとの接触時間ｔ（sec.）をとつた場合、静
圧ｐ（Kg）を小から大へ変えると、熱伝達係数α
と接触時間ｔとの関係は、曲線イ，ロ，ハに示す
ごとく変化し、同じ接触時間の場合は静圧が小さ
い程熱伝達係数αは小さくなる。従つて、室９
ｂ，９ｃの溶鋼の液面高さh2を低くすれば、水平
ロール１と凝固シエル５との間の熱伝達係数αが
小さくなつて溶鋼は冷却されにくくなり、サイド
シール２ｂ内側面のロールギヤツプ６上部に半凝
固物が異常成長するのを防止できる。 That is, as shown in Fig. 8, the vertical axis represents the heat transfer coefficient α (W/m 2 °C) between the horizontal roll, which is a rotating mold, and the solidification shell, and the horizontal axis represents the contact time t between the molten steel and the horizontal roll. (sec.), when the static pressure p (Kg) is changed from small to large, the heat transfer coefficient α
The relationship between t and contact time t changes as shown by curves A, B, and C, and for the same contact time, the smaller the static pressure is, the smaller the heat transfer coefficient α becomes. Therefore, room 9
If the liquid level h2 of the molten steel in b and 9c is lowered, the heat transfer coefficient α between the horizontal roll 1 and the solidification shell 5 will become smaller, making it difficult for the molten steel to be cooled, and the roll gap on the inner surface of the side seal 2b will decrease. 6. Abnormal growth of semi-solidified material on the upper part can be prevented.
堰枠２の各室９ａ，９ｂ，９ｃに注湯された溶
鋼は水平ロール１により冷却されて水平ロール１
表面側から凝固シエル５が形成され、該凝固シエ
ル５は徐々に成長してロールギヤツプ６から下方
へ引抜かれ、帯板７が鋳造されるが、上述したご
とく半凝固物の異常成長やそのロールギヤツプ６
への脱落がないなめ、鋳造中に板切れや板割れが
生じることがなく、しかも帯板の板厚分布が均一
になる。 The molten steel poured into each chamber 9a, 9b, 9c of the weir frame 2 is cooled by the horizontal roll 1.
A solidified shell 5 is formed from the surface side, and the solidified shell 5 gradually grows and is pulled downward from the roll gap 6 to cast the strip 7. However, as described above, abnormal growth of the semi-solid material and its roll gap 6 may occur.
Since there is no falling off of the strip, there will be no breakage or cracking of the strip during casting, and the thickness distribution of the strip will be uniform.
なお、本発明の実施例においては鋼を鋳造する
場合について説明したが、鋼以外の種々の金属の
鋳造に適用できること、堰枠の室は複数なら何室
にしても良いこと、その他、本発明の要旨を逸脱
しない範囲内で種々変更を加え得ること、等は勿
論である。 In the embodiments of the present invention, the case of casting steel has been described, but the present invention can also be applied to casting various metals other than steel, and the number of chambers in the weir frame may be any number, as long as there is a plurality of chambers. It goes without saying that various changes may be made without departing from the spirit of the invention.
本発明の連続鋳造方法及び装置によれば、水平
ロールの軸線方向両端側で溶湯の冷却が遅くな
り、この部分で半凝固物が異常発生することがな
いため、半凝固物が巻込まれることにより鋳造中
に板切れ、板割れが生じず、ライン停止の虞れが
なくて生産能率が向上し、又板厚分布の均一化を
図ることができるため製品品質が向上する、等
種々の優れた効果を奏し得る。
According to the continuous casting method and apparatus of the present invention, the cooling of the molten metal is delayed at both ends of the horizontal roll in the axial direction, and abnormal generation of semi-solidified material does not occur in these areas. There are various excellent benefits such as no plate breakage or plate cracking during casting, no risk of line stoppage, improving production efficiency, and uniform plate thickness distribution, which improves product quality. It can be effective.
第１図は従来装置の説明図、第２図は第１図の
平面図、第３図は本発明の連続鋳造方法及び装置
の説明図、第４図は第３図の−方向矢視図、
第５図は本発明に使用する堰枠の説明用斜視図、
第６図は第５図の方向矢視図、第７図は第５図
の方向矢視図、第８図は水平ロールと凝固シエ
ルとの熱伝達係数が溶鋼と水平ロールとの接触時
間或いは静圧によりどのように変わるかを示すグ
ラフである。
図中１は水平ロール、２は堰枠、３はタンデイ
ツシユ、６はロールギヤツプ、９ａ，９ｂ，９ｃ
は室、１１ａ，１１ｂ，１１ｃはノズルを示す。
Fig. 1 is an explanatory diagram of a conventional apparatus, Fig. 2 is a plan view of Fig. 1, Fig. 3 is an explanatory diagram of the continuous casting method and apparatus of the present invention, and Fig. 4 is a view taken in the - direction arrow of Fig. 3. ,
FIG. 5 is an explanatory perspective view of the weir frame used in the present invention;
Fig. 6 is a view in the direction of Fig. 5, Fig. 7 is a view in the direction of Fig. It is a graph showing how it changes depending on static pressure. In the figure, 1 is a horizontal roll, 2 is a weir frame, 3 is a tundish, 6 is a roll gap, 9a, 9b, 9c
indicates a chamber, and 11a, 11b, and 11c indicate nozzles.
Claims (1)
水平ロール上に配設した堰枠にタンデイツシユか
ら溶湯を供給し、該溶湯を水平ロールにより冷却
することにより形成された鋳片を、前記水平ロー
ル間のロールギヤツプから下方へ引抜いて連続的
に帯板を鋳造する方法において、堰枠内を水平ロ
ールの軸線方向へ向つて複数の室に分割し、分割
された堰枠の各室のうち水平ロールの軸線方向に
対し両側の室に注湯される溶湯の液面高さを、堰
枠の他の室に注湯される溶湯の液面高さよりも低
くし、水平ロールの軸線方向両端部における凝固
シエルと水平ロール間の熱伝達率を水平ロールの
軸線方向両端部以外の部分における凝固シエルと
水平ロール間の熱伝達率よりも小さくすることを
特徴とする連続鋳造方法。 ２ 相対向部が下方へ向けて回転する左右一対の
水平ロールと、水平ロール上に配設した堰枠と、
堰枠内に溶湯を供給するタンデイツシユを備え、
堰枠内に供給された溶湯を水平ロールにより冷却
することにより形成された鋳片を、前記水平ロー
ル間のロールギヤツプから下方へ引抜いて連続的
に帯板を鋳造する装置において、堰枠内を水平ロ
ールの軸線方向へ向つて複数の室に分割し、堰枠
内の各室に溶湯を供給するよう、タンデイツシユ
の下部に各室に対応して設けられたタンデイツシ
ユノズルのうち水平ロールの軸線方向両端部に位
置するタンデイツシユノズルの長さを、他の部分
に位置するタンデイツシユノズルの長さよりも長
くしたことを特徴とする連続鋳造装置。[Claims] 1. Molten metal is supplied from a tundish to a weir frame disposed on a pair of left and right horizontal rolls whose opposing parts rotate downward, and the molten metal is cooled by the horizontal rolls. In the method of continuously casting strips by pulling slabs downward from the roll gap between the horizontal rolls, the inside of the weir frame is divided into a plurality of chambers in the axial direction of the horizontal rolls, and the divided weir frame is The liquid level of the molten metal poured into the chambers on both sides in the axial direction of the horizontal roll is set lower than the liquid level of the molten metal poured into the other chambers of the weir frame. Continuous casting characterized by making the heat transfer coefficient between the solidification shell and the horizontal roll at both axial ends of the roll smaller than the heat transfer coefficient between the solidification shell and the horizontal roll at a portion other than the axial ends of the horizontal roll. Method. 2. A pair of left and right horizontal rolls whose opposing parts rotate downward, and a weir frame disposed on the horizontal rolls;
Equipped with a tundish that supplies molten metal into the weir frame,
In an apparatus that continuously casts a strip by pulling a slab formed by cooling molten metal supplied into a weir frame with horizontal rolls downward from a roll gap between the horizontal rolls, the inside of the weir frame is horizontally drawn. The tundish nozzle is divided into multiple chambers in the axial direction of the roll, and is installed at the bottom of the tundish nozzle corresponding to each chamber to supply molten metal to each chamber in the weir frame. A continuous casting device characterized in that the length of the tundish nozzles located at both ends in the direction is longer than the length of the tundish nozzles located at other parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12025884A JPS611453A (en) | 1984-06-12 | 1984-06-12 | Method and equipment for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12025884A JPS611453A (en) | 1984-06-12 | 1984-06-12 | Method and equipment for continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS611453A JPS611453A (en) | 1986-01-07 |
| JPH0464775B2 true JPH0464775B2 (en) | 1992-10-16 |
Family
ID=14781746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12025884A Granted JPS611453A (en) | 1984-06-12 | 1984-06-12 | Method and equipment for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS611453A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8357769B2 (en) | 2008-04-18 | 2013-01-22 | Asahi Kasei Chemicals Corporation | Method for producing polyphenylene ether |
-
1984
- 1984-06-12 JP JP12025884A patent/JPS611453A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS611453A (en) | 1986-01-07 |
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