JPS62227558A - Continuous casting method - Google Patents
Continuous casting methodInfo
- Publication number
- JPS62227558A JPS62227558A JP7129086A JP7129086A JPS62227558A JP S62227558 A JPS62227558 A JP S62227558A JP 7129086 A JP7129086 A JP 7129086A JP 7129086 A JP7129086 A JP 7129086A JP S62227558 A JPS62227558 A JP S62227558A
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- cooling mold
- nozzle
- mold
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 19
- 238000009749 continuous casting Methods 0.000 title claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 238000007654 immersion Methods 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005266 casting Methods 0.000 abstract description 10
- 238000003756 stirring Methods 0.000 abstract description 7
- 238000007711 solidification Methods 0.000 abstract description 6
- 230000008023 solidification Effects 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000007791 liquid phase Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005204 segregation Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002344 surface layer 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
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/507—Pouring-nozzles giving a rotating motion to the issuing molten metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、溶鋼から直接スラブ、ブルーム等の鋼片を
連続的に製造する連続鋳造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a continuous casting method for continuously producing steel pieces such as slabs and blooms directly from molten steel.
（従来の技術及びその問題点）
従来、スラブやブルーム等の比較的大型の鋼片を連続的
に鋳込む場合、第２図に示すような浸漬ノズルを用いて
溶鋼を冷却鋳型に注入する連続鋳造方法が知られている
。より具体的には、タンデッシュｌの下面に浸漬ノズル
２が取り付けられており、この浸漬ノズル２から冷却水
で冷却されている鋳型３に溶鋼が注入される。注入され
た溶鋼は鋳型３の壁面で冷却されて一部凝固し、一部凝
固した鋳片５はガイドロール４に保持されながら図示し
ないピンチロールで連続的に引き抜かれる。(Prior art and its problems) Conventionally, when relatively large pieces of steel such as slabs and blooms are continuously cast, molten steel is continuously poured into a cooling mold using a submerged nozzle as shown in Figure 2. Casting methods are known. More specifically, a submerged nozzle 2 is attached to the lower surface of the tundish l, and molten steel is injected from the submerged nozzle 2 into a mold 3 that is cooled with cooling water. The injected molten steel is cooled and partially solidified on the wall surface of the mold 3, and the partially solidified slab 5 is continuously pulled out by pinch rolls (not shown) while being held by guide rolls 4.
鋳型３から引き抜かれた鋳片５はその内部に凝固しない
液相部５ａを有しており、スプレ６により冷却水を鋳片
５に吹き付けて冷却し、凝固を完了させている。The slab 5 pulled out from the mold 3 has an unsolidified liquid phase portion 5a inside thereof, and the spray 6 sprays cooling water onto the slab 5 to cool it and complete solidification.
上述の鋳込方法はスラブやブルーム等の比較的大型の鋼
片を連続的に鋳込む場合に一般的な方法であり、前記浸
漬ノズル２が、その下部開口を鋳型３に注入した溶湯の
場面５ｂ下に浸漬させているため、溶鋼がタンデッシュ
１から鋳型３に注入される際に大気により酸化されるこ
とがなく、介在物の生成が阻止されるという点で、溶鋼
をタンディシュノズルから直接湯面に向けて落下させて
注入する、所謂オープン鋳込みより優れている。The above-mentioned casting method is a common method when relatively large pieces of steel such as slabs and blooms are continuously cast. 5b, the molten steel is not oxidized by the atmosphere when it is injected from the tundish 1 into the mold 3, and the formation of inclusions is prevented. It is superior to so-called open casting, which pours water by dropping it toward the surface of the molten metal.
しかしながら、オープン鋳込みに比べ溶鋼が浸漬ノズル
２を介して比較的静かに鋳型３に注入されるため、液相
部５ａでの流動が少なく、液相部５ａの凝固速度が遅い
ために鋳片中心部にＣ，Ｓ等の中心偏析が生じ易いとい
う問題があった。However, compared to open casting, molten steel is injected into the mold 3 relatively quietly through the immersion nozzle 2, so there is less flow in the liquid phase part 5a, and the solidification rate of the liquid phase part 5a is slow, so the slab center There was a problem in that center segregation of C, S, etc. was likely to occur in the parts.
この問題を解決するために、例えば冷却鋳型の近傍乃至
は冷却鋳型の背面に電磁攪拌装置を配設し、電磁力を利
用して溶鋼を攪拌させ、溶鋼の冷却を促進させる方法が
知られているが、電磁攪拌装置は極めて高価な装置であ
るためこれに代わる安価な装置により冷却鋳型内の溶鋼
を攪拌する方法が要請されていた。In order to solve this problem, a method is known in which, for example, an electromagnetic stirring device is disposed near the cooling mold or on the back of the cooling mold, and the molten steel is stirred using electromagnetic force to promote cooling of the molten steel. However, since electromagnetic stirring devices are extremely expensive devices, there has been a demand for a method of stirring molten steel in a cooling mold using an inexpensive alternative device.
本発明は斯かる要請に鑑みてなされたもので、簡易な方
法により冷却鋳型内の溶鋼を攪拌して冷却を促進し、中
心偏析の防止を図った連続鋳造方法を提供することを目
的とする。The present invention has been made in view of such a need, and an object of the present invention is to provide a continuous casting method that uses a simple method to stir molten steel in a cooling mold to promote cooling and prevent center segregation. .
（問題点を解決するための手段）
上述の目的を達成するために本発明の連続鋳造方法は、
タンディシュの下面に取り付けた浸漬ノズルを介して溶
鋼を冷却鋳型に注入し、凝固した鋳片を連続的に引き抜
き、所望の形状に鋳込む連続鋳造方法において、前記浸
漬ノズルの下端面を閉塞すると共に、実質的に該下端面
近傍の側壁に少なくとも一つの注入孔を穿設し、該注入
孔を湯面下に浸漬させ、且つ、前記浸漬ノズルを該ノズ
ル軸周りに回転させながら前記注入孔から溶鋼を前記冷
却鋳型に注入することを特徴とする。(Means for solving the problems) In order to achieve the above-mentioned object, the continuous casting method of the present invention includes:
In a continuous casting method in which molten steel is injected into a cooling mold through an immersion nozzle attached to the lower surface of a tundish, the solidified slab is continuously pulled out and cast into a desired shape, the lower end surface of the immersion nozzle is closed and , at least one injection hole is formed in the side wall substantially near the lower end face, the injection hole is immersed below the hot water surface, and the immersion nozzle is rotated around the nozzle axis while the injection hole is inserted. The method is characterized in that molten steel is injected into the cooling mold.
（作用）
浸漬ノズルをノズル軸周りに回転させ、且つ、浸漬ノズ
ルの側壁に穿設された注入孔から溶鋼を冷却鋳型内に注
入すると、溶鋼は旋回しながら冷却鋳型に注入される。(Operation) When the immersion nozzle is rotated around the nozzle axis and molten steel is injected into the cooling mold from the injection hole formed in the side wall of the immersion nozzle, the molten steel is injected into the cooling mold while swirling.
この溶鋼の旋回流は一鋳片内部の液相部を攪拌し、該液
相部から冷却鋳型壁面への放熱を促進して液相部の凝固
を早め、これにより中心偏析が防止される。This swirling flow of molten steel stirs the liquid phase inside one slab, promotes heat dissipation from the liquid phase to the cooling mold wall surface, accelerates solidification of the liquid phase, and thereby prevents center segregation.
（実施例）
以下本発明の一実施例を図面を参照して詳細に説明する
。(Example) An example of the present invention will be described in detail below with reference to the drawings.
第１図は本発明方法を実施する連続鋳造装置のタンディ
シュ下部及び冷却鋳型近傍の一部断面構成図であり、符
号１０及び１３は夫々タンディシュ及び冷却鋳型である
。タンディシュ１０の下１１０ａ中央位置に内挿式のタ
ンディシュノズル１２が、その下端部１２ａをタンディ
シュ１０の下面１０ａより突出させて取り付けである。FIG. 1 is a partial sectional view of the lower part of the tundish and the vicinity of the cooling mold of a continuous casting apparatus for carrying out the method of the present invention, and numerals 10 and 13 are the tundish and the cooling mold, respectively. An insert-type tundish nozzle 12 is attached to the center position of the lower part 110a of the tundish 10, with its lower end 12a protruding from the lower surface 10a of the tundish 10.
そして、このクンディシュノズル１２と同軸、且つ、下
方に浸漬ノズル１４が回転自在に連設されている。A submerged nozzle 14 is rotatably connected coaxially with and below the kundish nozzle 12.
より具体的には、浸漬ノズル１４は略円筒形状に成形さ
れ、上部間口Ｌ ４ ａ ４４１ｒｉ＋ｌＩ＋７％状に
拡開し、タンディシュノズル１２の前記下端部１２ａを
、浸漬ノズル１４が回転自在に内嵌させている。一方、
浸漬ノズル１４の下端面１４ｂは閉塞されると共に該下
端面１４ｂ近傍の側壁に２つの注入孔１４ｃが周上等間
隔位置に穿設されており、これらの注入孔１４ｃは連続
鋳造時に冷却鋳型１３内の場面ＬＳａ下に浸漬している
。More specifically, the immersion nozzle 14 is formed into a substantially cylindrical shape, expands to have an upper opening L 4 a 441ri+lI+7%, and the immersion nozzle 14 is rotatably fitted into the lower end 12a of the tundish nozzle 12. I'm letting you do it. on the other hand,
The lower end surface 14b of the immersion nozzle 14 is closed, and two injection holes 14c are bored at equal intervals on the circumference in the side wall near the lower end surface 14b, and these injection holes 14c are connected to the cooling mold 13 during continuous casting. It is immersed under the inner scene LSa.
浸漬ノズル１４の上端部１４ｄは円筒状の胴板１６の内
周壁にモルタル１７により固着され、該胴板ｌＧは、タ
ンディシュＩＯの下面１０ａに前記クンディシュノズル
１２と同心に固設・垂下している円筒形状の取付部材１
日の内周壁にベアリング１９ａ、１９ｂを介して回転自
在に支持されている。そして、胴板１６の下端面は取付
部材１８の下端面より僅かに突出し、突出した胴板１６
の下端面にリング状のスプロケット２０が胴板１６と同
心に取付けられている。タンディシュ１ｏの下面１０ａ
には減速歯車装置２２が取付けられており、該減速歯車
装置２２の出力軸２２ａにはスプロケット２３が亀付け
られている。そして、前記スプロケット２０及びスプロ
ケット２３は、両者間に張架されたローラチェーン２４
を介して接続されている。減速歯車装ｒＩ１２２の入力
軸２２ｂは動力伝達軸２６を介して電動モータ２５の出
力軸２５ａに接続され、動力伝達軸２６の両端部にはポ
ールジョインｌ−２６ａ、２６ｂが介装され、減速歯車
装置２２の入力軸２２ｂと動力伝達軸１６は差し込みジ
ヨイント２２ｃによりスプライン結合されている。The upper end 14d of the immersion nozzle 14 is fixed to the inner circumferential wall of a cylindrical body plate 16 with mortar 17, and the body plate 1G is fixed and suspended concentrically with the kundish nozzle 12 on the lower surface 10a of the tundish IO. Cylindrical mounting member 1
It is rotatably supported on the inner circumferential wall of the shaft via bearings 19a and 19b. The lower end surface of the body plate 16 slightly protrudes from the lower end surface of the mounting member 18, and the protruding body plate 16
A ring-shaped sprocket 20 is attached to the lower end surface of the body plate 16 and concentrically therewith. Lower surface 10a of tundish 1o
A reduction gear device 22 is attached to the reduction gear device 22, and a sprocket 23 is hooked onto an output shaft 22a of the reduction gear device 22. The sprocket 20 and the sprocket 23 are connected to a roller chain 24 stretched between them.
connected via. The input shaft 22b of the reduction gear system rI122 is connected to the output shaft 25a of the electric motor 25 via the power transmission shaft 26, and pole joins l-26a and 26b are interposed at both ends of the power transmission shaft 26, and the reduction gear The input shaft 22b of the device 22 and the power transmission shaft 16 are spline connected by a bayonet joint 22c.
符号２８は前記取付部材１８内部に連通ずる不活性ガス
導入管であり、該導入管２８を介して取付部材１８の内
部は不活性ガス、例えばアルゴンガスが充満されており
、これによりベアリング１９ａ。Reference numeral 28 denotes an inert gas introduction pipe that communicates with the inside of the mounting member 18, and the inside of the mounting member 18 is filled with an inert gas, for example, argon gas, through the introduction pipe 28, so that the bearing 19a.
１９ｂを冷却すると共に、タンディシュ１０から溶鋼を
冷却鋳型１３に注入する際に、タンディシュノズル１２
と浸漬ノズル１４間の間隙から大気中の酸素が溶鋼に取
り込まれるのを防止している。19b and when injecting molten steel from the tundish 10 into the cooling mold 13, the tundish nozzle 12
This prevents atmospheric oxygen from being taken into the molten steel through the gap between the nozzle and the immersion nozzle 14.
符号３０は防熱板であり、冷却鋳型１３内に注入された
溶鋼の湯面１５ａから胴板１６、減速歯車装置２２等に
輻射熱が伝達されるのを抑制している。Reference numeral 30 denotes a heat shield plate, which suppresses radiant heat from being transmitted from the surface 15a of the molten steel injected into the cooling mold 13 to the body plate 16, the reduction gear device 22, and the like.
上述のように構成される連続鋳造装置により、ブルーム
等の鋼片が以下のようにして連続鋳造される。With the continuous casting apparatus configured as described above, steel pieces such as blooms are continuously cast in the following manner.
タンデッシュ１０には図示しない取鍋から溶鋼３２が注
入・補給され、タンデッシュ１０はこの溶ｔＦｉ１３２
をタンデフシュノズル１２及び浸漬ノズル１４を介して
冷却鋳型１３に所定鋳込量で注入している。このとき、
電動モータ２５には電力が投入されており、電動モータ
２５の回転が動力伝達軸１６、減速歯車装置２２、スプ
ロケット２３、ローラチェーン２４、スプロケット２０
を介して胴板１６及び浸漬ノズル１４に伝達され、浸漬
ノズル１４は所定の回転数（例えば、１０〜８０ｒｐｍ
）で回転している。従って、浸漬ノズル１４の注入孔１
４ａから冷却鋳型１３内に噴出・注入される溶鋼も回転
しながら注入されることになり、この回転に伴って冷却
鋳型１３内の溶湯が攪拌され、液相部１５ｂから冷却水
で冷却されている冷却鋳型１３の壁面への放熱が促進さ
れ、凝固相の形成が早められる。又、溶湯の回転による
遠心力効果により鋳片１５の表層介在物が減少する。尚
、冷却鋳型１３内の湯面１５ａには鋳造パウダ３５が投
入され、この鋳造パウダ３５がスラグ状に浮遊して湯面
１５ａを覆い、湯面ｔＳａを大気から遮断すると共に、
冷却鋳型１３と鋳片１５間に介在して両者間の潤滑を行
い、鋳型１３から鋳片１５の引き抜きを容易にしている
が、冷却鋳型１３内の溶湯の回転により鋳造パウダ３５
の溶融化が促進され、鋳型１３と鋳片１５間に均一で滑
らかなスラグ層が形成されるために鋳片表面に皺等のな
い良好な表面品質が得られる。Molten steel 32 is injected and supplied into the tundish 10 from a ladle (not shown), and the tundish 10 receives this molten steel 132.
is injected into the cooling mold 13 at a predetermined pouring amount through the tandem nozzle 12 and the immersion nozzle 14. At this time,
Electric power is applied to the electric motor 25, and the rotation of the electric motor 25 is transmitted to the power transmission shaft 16, the reduction gear device 22, the sprocket 23, the roller chain 24, and the sprocket 20.
is transmitted to the body plate 16 and the submerged nozzle 14 via the
) is rotating. Therefore, the injection hole 1 of the submerged nozzle 14
The molten steel spouted and injected into the cooling mold 13 from 4a is also injected while rotating, and with this rotation, the molten metal in the cooling mold 13 is stirred and cooled by cooling water from the liquid phase part 15b. Heat dissipation to the wall surface of the cooling mold 13 is promoted, and the formation of the solidification phase is accelerated. Further, the surface inclusions of the slab 15 are reduced due to the centrifugal force effect caused by the rotation of the molten metal. Incidentally, the casting powder 35 is poured into the hot water surface 15a in the cooling mold 13, and this casting powder 35 floats like a slag and covers the hot water surface 15a, shielding the hot water surface tSa from the atmosphere.
It is interposed between the cooling mold 13 and the slab 15 to provide lubrication between the two and facilitate the withdrawal of the slab 15 from the mold 13. However, due to the rotation of the molten metal in the cooling mold 13, the casting powder 35
The melting of the cast slab is promoted, and a uniform and smooth slag layer is formed between the mold 13 and the slab 15, so that a good surface quality without wrinkles or the like can be obtained on the surface of the slab.
冷却鋳型１３の壁面で冷却されて凝固した鋳片１５は第
２図において説明したと同様の公知の方法で引き抜かれ
、図示しない切断機により所定の長さの鋼片に切断され
、ブルーム等に仕上げられる。The slab 15 that has been cooled and solidified on the wall of the cooling mold 13 is pulled out by the same known method as explained in FIG. It will be finished.
尚、上述の実施例では浸漬ノズル１４の下部側壁に２つ
の注入孔１４Ｃが穿設されたが、本発明はこれに限定さ
れず、必要に応じ適宜の個数の注入孔を穿設するように
しても良い。又、この注入孔の穿設方向も、該注入孔か
ら噴出する溶鋼が冷却鋳型内の溶鋼の液相部を実質的に
攪拌できる方向で有ればよく、従って、実質的に浸漬ノ
ズルの側面に穿設された場合と同じ効果を有するのであ
れば、注入孔を浸漬ノズ、ルの下端面に穿設しても良い
。In the above embodiment, two injection holes 14C are formed in the lower side wall of the immersion nozzle 14, but the present invention is not limited to this, and an appropriate number of injection holes may be formed as necessary. It's okay. Also, the direction in which this injection hole is formed is only required to be such that the molten steel spouted from the injection hole can substantially stir the liquid phase of the molten steel in the cooling mold. The injection hole may be formed in the lower end face of the immersion nozzle, as long as it has the same effect as if it were formed in the immersion nozzle.
（発明の効果）
以上詳述したように本発明の連続鋳造方法に依れば、浸
漬ノズルの下端面を閉塞すると共に、実質的に該下端面
近傍の側壁に少なくとも一つの注入孔を穿設し、注入孔
を冷却鋳型内の湯面下に浸漬させ、且つ、浸漬ノズルを
該ノズル軸周りに回転させながら注入孔から溶鋼を冷却
鋳型に注入するようにしたので、簡易な方法により冷却
鋳型内に注入された溶鋼を攪拌することができ、溶鋼中
心部の冷却・凝固が促進され、この結果、鋳片の゛中心
偏析を抑制できると共に、鋳片の表層介在が減少し、且
つ、皺等のない良好な表面品質の鋳片が得られるという
種々の優れた効果を奏する。(Effects of the Invention) As detailed above, according to the continuous casting method of the present invention, the lower end face of the immersion nozzle is closed, and at least one injection hole is bored substantially in the side wall near the lower end face. The injection hole is immersed below the molten metal surface in the cooling mold, and the molten steel is injected from the injection hole into the cooling mold while rotating the immersion nozzle around the nozzle axis. The molten steel injected into the molten steel can be stirred, the cooling and solidification of the center of the molten steel is promoted, and as a result, it is possible to suppress the center segregation of the slab, reduce the inclusion of the surface layer of the slab, and prevent wrinkles. It has various excellent effects such as obtaining slabs with good surface quality free of surface defects.
第１図は本発明方法を実施する連続鋳造装置の一例を示
し、該連続鋳造装置のタンデッシュ下部及び冷却鋳型近
傍の一部断面構成図、第２図は従来の連続鋳造方法を実
施する連続鋳造装置のタンデッシュ下部及び冷却鋳型近
傍の一部断面構成図である。
１０・・・タンデッシュ、１２・・・タンデッシュノズ
ル、１３・・・冷却鋳型、１４・・・浸漬ノズル、１６
・・・胴板、２０．２３・・・スプロケット、２２減速
歯車装置、２４・・・ローラチェーン、２５・・・電動
モータ。Fig. 1 shows an example of a continuous casting apparatus that carries out the method of the present invention, and is a partial cross-sectional configuration diagram of the lower part of the tundish and the vicinity of the cooling mold of the continuous casting apparatus, and Fig. 2 shows a continuous casting apparatus that carries out the conventional continuous casting method. FIG. 2 is a partial cross-sectional configuration diagram of the lower part of the tundish and the vicinity of the cooling mold of the apparatus. 10... Tundesh, 12... Tundesh nozzle, 13... Cooling mold, 14... Immersion nozzle, 16
... Body plate, 20.23 ... Sprocket, 22 Reduction gear device, 24 ... Roller chain, 25 ... Electric motor.
Claims (1)
鋼を冷却鋳型に注入し、凝固した鋳片を連続的に引き抜
き、所望の形状に鋳込む連続鋳造方法において、前記浸
漬ノズルの下端面を閉塞すると共に、実質的に該下端面
近傍の側壁に少なくとも一つの注入孔を穿設し、該注入
孔を湯面下に浸漬させ、且つ、前記浸漬ノズルを該ノズ
ル軸周りに回転させながら前記注入孔から溶鋼を前記冷
却鋳型に注入することを特徴とする連続鋳造方法。In a continuous casting method in which molten steel is injected into a cooling mold through an immersion nozzle attached to the lower surface of a tundish, the solidified slab is continuously pulled out and cast into a desired shape, the lower end surface of the immersion nozzle is closed and , at least one injection hole is formed in the side wall substantially near the lower end face, the injection hole is immersed below the hot water surface, and the immersion nozzle is rotated around the nozzle axis while the injection hole is inserted. A continuous casting method characterized by injecting molten steel into the cooling mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7129086A JPS62227558A (en) | 1986-03-31 | 1986-03-31 | Continuous casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7129086A JPS62227558A (en) | 1986-03-31 | 1986-03-31 | Continuous casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62227558A true JPS62227558A (en) | 1987-10-06 |
Family
ID=13456408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7129086A Pending JPS62227558A (en) | 1986-03-31 | 1986-03-31 | Continuous casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62227558A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699317A (en) * | 2012-04-19 | 2012-10-03 | 济南麦哈勃冶金技术开发有限公司 | Combined elongated upper nozzle and manufacturing method for same |
| CN108856693A (en) * | 2017-05-15 | 2018-11-23 | 维苏威美国公司 | The asymmetric slab mouth of a river |
-
1986
- 1986-03-31 JP JP7129086A patent/JPS62227558A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699317A (en) * | 2012-04-19 | 2012-10-03 | 济南麦哈勃冶金技术开发有限公司 | Combined elongated upper nozzle and manufacturing method for same |
| CN108856693A (en) * | 2017-05-15 | 2018-11-23 | 维苏威美国公司 | The asymmetric slab mouth of a river |
| US11103921B2 (en) | 2017-05-15 | 2021-08-31 | Vesuvius U S A Corporation | Asymmetric slab nozzle and metallurgical assembly for casting metal including it |
| CN108856693B (en) * | 2017-05-15 | 2022-04-29 | 维苏威高级陶瓷(中国)有限公司 | Asymmetric slab gate |
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