JPS6352756A - Submerged nozzle for continuous casting - Google Patents
Submerged nozzle for continuous castingInfo
- Publication number
- JPS6352756A JPS6352756A JP19396186A JP19396186A JPS6352756A JP S6352756 A JPS6352756 A JP S6352756A JP 19396186 A JP19396186 A JP 19396186A JP 19396186 A JP19396186 A JP 19396186A JP S6352756 A JPS6352756 A JP S6352756A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- mold
- nozzle
- molten metal
- outside
- 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.)
- Granted
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 238000007654 immersion Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 abstract description 19
- 238000007599 discharging Methods 0.000 abstract 6
- 229910000831 Steel Inorganic materials 0.000 description 32
- 239000010959 steel Substances 0.000 description 32
- 238000005266 casting Methods 0.000 description 11
- 230000007547 defect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 239000006104 solid solution Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000257465 Echinoidea Species 0.000 description 1
- GXCLVBGFBYZDAG-UHFFFAOYSA-N N-[2-(1H-indol-3-yl)ethyl]-N-methylprop-2-en-1-amine Chemical compound CN(CCC1=CNC2=C1C=CC=C2)CC=C GXCLVBGFBYZDAG-UHFFFAOYSA-N 0.000 description 1
- 235000021028 berry Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002087 whitening effect Effects 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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、連続鋳造において、鋳片内の非金属介在物を
低減し、清浄鋼を鋳造するための浸漬ノズルに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a submerged nozzle for reducing non-metallic inclusions in a slab and casting clean steel in continuous casting.
従来の技術
第４図に示すように、溶鋼の連続鋳造において、前回取
鍋に引続き、次回取鍋１１内の溶鋼をタンディツシュ６
に供給する場合、前鍋の注入末期に疏出してタンディツ
シュ内溶鋼１３の表面に浮遊しているスラグ層５が、ロ
ングノズル１２よりの注入流によってタンディツシュ内
溶鋼１３の内部へたたき込まれる。BACKGROUND ART As shown in FIG. 4, in continuous casting of molten steel, the molten steel in the ladle 11 is poured into a tundish 6 following the previous ladle.
When the slag layer 5 is spewed out at the end of pouring into the front ladle and is floating on the surface of the molten steel 13 in the tundish, the slag layer 5 is thrown into the molten steel 13 in the tundish by the injection flow from the long nozzle 12.
タンディツシュ容量、鋳造速度等によっても異なるが、
タンディツシュ内溶鋼１３の内部にたたき込まれたスラ
グの内、粒径１００ ｇ以下のものは、溶鋼流とともに
鋳型内に注入され、鋳片内弁金属介在物となって鋳片の
著しい品質悪化を起こす原因となる。Although it varies depending on the tandish capacity, casting speed, etc.
Among the slag thrown into the inside of the molten steel 13 in the tundish, slag with a particle size of 100 g or less is injected into the mold together with the molten steel flow, becomes valve metal inclusions in the slab, and significantly deteriorates the quality of the slab. cause it to occur.
従来より溶鋼をタンディツシュから鋳型に注入する際に
、使用されている一般的な浸漬ノズルの形状としては、
例えば第２図、第３図に示す実公昭４８−２３２９３号
公報に示された如き、吐出孔７の形状が下向、または上
向のタイプのものが主である。Conventionally, the shape of the immersion nozzle used when injecting molten steel from the tundish into the mold is as follows:
For example, the type shown in Japanese Utility Model Publication No. 48-23293, shown in FIGS. 2 and 3, is mainly of the type in which the discharge hole 7 is directed downward or upward.
発明が解決しようとする問題点
第２図に示１ようなｔ゛向吐出孔の侵情ノズルｌを使用
すると、用出流２が下向となるため、鋳型固溶鋼表面の
波イｌぢが小さく、モールドパウダ−３の１を込等に起
因する鋳片表面ｔｉｃ＋＊少ないが、溶鋼中に混在する
非金属介イｆ物は浸漬ノズル１からの吐出流２がモール
ドパウダー３（こ接触］７ないために捕集されるｉｌｌ
能に１が小さい。このため錆１；に４１金属介在物が混
入１２、これが製品の表面順、の原因となる。Problems to be Solved by the Invention When an erosive nozzle l having a discharge hole in the t direction as shown in FIG. Although the surface tic of the slab due to the inclusion of 1 in the mold powder 3 is small, the non-metallic inclusions mixed in the molten steel cause the discharge flow 2 from the immersion nozzle 1 to ] 7 ill collected for not
1 is small in Noh. Therefore, 41 metal inclusions are mixed into the rust 1; and this causes the surface order of the product.
−・方、第３図に示すよっな１−向吐出孔の浸？Ｉ１１
ノズルｌを使用すると、浸漬ノズルＪ５かＥ、の１１出
揄。- On the other hand, is the discharge hole in the 1-direction immersed in water as shown in Figure 3? I11
When using nozzle L, immersion nozzle J5 or E is used.
２がモールドパウダー３と直接接触場るため、溶鋼中に
混在する非金１１．介イ１物１」千−ルドパ「′ツター
３に捕集されるｉｊｌ’能刊が高いが、吐出流速が大き
くなると鋳型固溶鋼表面での波へ″ｌちが大きくなり、
モールドパウダー３の持込み才にＪ′る鋳Ｊ１表面疵が
発生１．易い。2 is in direct contact with the mold powder 3, non-gold 11. mixed in the molten steel. The amount of liquid collected by the tube 3 is high, but as the discharge flow rate increases, the difference to the waves on the surface of the mold solid solution steel increases,
A surface flaw occurred on the surface of the casting J1 due to the introduction of the mold powder 3.1. easy.
また、同一 １４向角度の枳情ノズルを使用！７た場合
、鋳型−・」０二によって男金属介イ１物の捕集除去効
果（、′差が生じる。例λば、狭幅の鋳型でｌｆ、？ｆ
ｉ情ノズル］」１出孔から鋳型側壁まＣの距離が知かく
、吐出流、がパウダーに接剤：せずに’−’Ｌｌ’ｌ接
鈷型側壁に側突Ｉ７、大部／Ｊ）が十カにｆＡＥＩ’す
るため、非金属介イｒ物が捕集除去きねにくい。したが
って、狭幅シイズでｌｄｌ、Ｊｌ金属介イＩ物に起因〜
イ、る表面前、がν、幅号イズと比ＫＬで多重に発ノ１
：ｑ、 Ｌ、ｊ＋金属介イ１物捕集苅果がほとんどずす
ｒｐＪｌない。Also, use the same 14 direction angle nozzles! 7, a difference in the collection and removal effect (,') of the male metal particles will occur depending on the mold. For example, in a narrow mold, lf, ?f
1) The distance from the outlet hole to the side wall of the mold is small, and the discharge flow contacts the powder without contacting the side wall of the mold. ) has a fAEI' of ten, making it difficult for non-metallic inclusions to be collected and removed. Therefore, due to ldl and Jl metal inclusions in the narrow width
A, in front of the surface, is ν, the width is and the ratio KL is multiple times.
:q, L, j+metallic particles 1 There are almost no berries collected.
このため、狭幅の鋳型側、才、３いて従来の浸漬ノズル
の用出孔を更に１．白化１シ１、ｌ’ｔ： ｉｌｌ ’
ｌｋを士−ルドパウダーに゛ｌｌ′ｌ接接触ｓ″Ｘ刊、
伶イｆ物捕集効果４上げることがＪ５身ら才するが１例
えば１０００ｍｍ未満の狭幅におい−Ｃ引核速度苓８０
０Ｉｌ１ｍ／分り１４Ｌすると、速い吐出が１が鋳型内
溶鋼Ｊ〈面４こ１′）っ−（湯面の波）シちが人さくな
り、ｕｊＢ表面艙が発）１する。」、た、表面ｌｉ＋。For this reason, on the narrow mold side, the conventional immersion nozzle has an additional 1. Whitening 1shi 1, l't: ill'
Contact lk with cold powder s''X publication,
It is useful to improve the object collection effect 4, but 1, for example, in a narrow width of less than 1000 mm - C pulling nucleus speed 80
When 0IL1m / 14L is performed, the faster discharge is 1 for the molded inner dissolved steel J <4 sides, 1 '), and (the waves on the water surface) become person, and the UJB surface 艙 is 1). ”, ta, surface li+.
の発ノｌｋ回Ｍｉるため、引４↓速Ｉ！′！ｌ不抑えて
も表面疵はさ１１と低減せず操２． ｆＥ＋が低ト４る
とい）問題があった。To reduce the number of times Mi starts, pull 4 ↓ speed I! ′! Even if the surface flaws were not suppressed, the surface flaws were not reduced to 11. There was a problem with fE+ being low (4).
イ１１＼方、狭幅−ジー１ズの鋳型内−ｒ＋ １１．
Ｈｐ流をト向化−すル’ｊｋ ４Ｋ ト１．． Ｙ 例
＃ ｌ；ｉ、＃１ 公開５１１．７９３浪３公％ ｌｘ
ｌ」、第５図に示“増ように侵清ノズルｌからの１＋ｌ
出流２を略垂直の−Ｊ−： ！Ａ疏、と１７で鋳型内に
む入するＩＨ，、＋清ノズルが提案されている。しか１
２、この力性では浸漬ノズルの先端形状が複雑になり、
加１が勉［７いこと、また吐出油２が略垂直（： −５
４７４＋、じなるため鋳造速度が大きくなると湯面での
波Ａ゛ｌちが大さくなることが考えら才する。A11\ side, narrow width - inside the mold of G1 - r+ 11.
Convert Hp flow to 4K 1. ．． Y Example # l;i, #1 Publication 511.793 3rd public% lx
1+l from infiltration nozzle l as shown in Figure 5.
Outflow 2 is approximately vertical -J-: ! An IH, + clear nozzle that is inserted into the mold with A and 17 has been proposed. Only 1
2. With this force, the tip shape of the immersion nozzle becomes complicated,
In addition, the discharge oil 2 is approximately vertical (: -5
474+, so it can be considered that as the casting speed increases, the difference in waves A1 at the surface of the molten metal increases.
本発明は鋼などの連続ｔＪＩ造において４、千−ルＦ内
の溶湯のＩｌｌｌｌ出金モ・−ルドパウダーに接触させ
、しかも溶湯表面での波立ちを小、ざ〈［７て１．Ｊｌ
金属介在物の少ない清浄な製品を得ることをｉｌｌ能と
する連続鋳造用ノズルを提供するごど香−１）的とする
。In the continuous tJI construction of steel, etc., the present invention allows the molten metal within 4,000 lbs. Jl
The objective of the present invention is to provide a continuous casting nozzle that is capable of producing a clean product with few metal inclusions.
問題、げｉを解決するための１段
本発明Ｃ」連続鋳造用浸漬ノズル（＋、） ！ｊおいて
、閉塞した底部（４）近傍の両側面ｉ、ｒ溶混の吐出孔
（７）を備え、該吐出孔（７）は、
（イ）−１−面（８）が外側に向って−１一方１．１傾
斜１７ており、
（ロ）下面（９）が水平になっているか、またｊＪ釧側
１こ向−）−τ゛１．力１ｃ ｌｌ／ｌ胴ｌ、ており、
（ハ）内側だ−て・１７Ｊ、（ｄ）、↓りも列側たて−
く」法（Ｄ）が天で才〕す、
（ハ）内側孔面精（ＳＮ ）よりも列側孔面ｂ’１（Ｓ
ｏ）が犬であることを特徴とするｉ！Ｉ！続鈷造川ノズ
用でｋ）る。A one-stage invention to solve the problem, ``Immersion nozzle for continuous casting'' (+,)! J is provided with a discharge hole (7) for mixing i and r on both sides near the closed bottom (4), and the discharge hole (7) has a surface (8) facing outward. (b) Is the lower surface (9) horizontal? Force 1c ll/l Torso l,
(c) Inner side, 17J, (d), ↓Rimo row side vertical.
(C) The row side hole surface b'1 (S) is better than the inner hole surface (SN).
i! o) is a dog! I! k) for the continuation of Tozokawa Nozu.
以下、本発明を図面に示１一実施例によって説明する。Hereinafter, the present invention will be explained with reference to eleven embodiments shown in the drawings.
第１図（ａ）の断面１ダに示１浸漬ノズルＪは、底１部
４辺傍の両側面にＩｌｌ出孔”ｌを偵；λ、Ｉｌｌ出孔
７の一１Ｌ面Ｂは列側に向って上山に傾斜Ｉ７ている。The submerged nozzle J shown in the cross section 1D in FIG. The I7 slopes upwards towards the mountains.
またＩり出孔７のＦ面９１」水平になっているか、また
７１列側に向って１一方に傾Ａ １．、 ′７′いる。Also, is the F side 91 of the I exit hole 7 horizontal?Also, is it tilted to one side toward the 71st row?1. , '7' is there.
ＩＩＩ Ｉｆ’孔゛７の内側たて・Ｊが（［１）よりも
外側たて」？）、（１１）が大である。すなわち、吐出
孔７の上面８おＪ、Ｕ−ト血９の木・１１ツノ向に対重
る信用をイねイーミわＯｌおよびθ２どするどき、θ１
〉０．である。III If' Hole 7's inner side and J are outer side than ([1)''? ), (11) are large. In other words, the upper surface of the discharge hole 7 8 and
〉0. It is.
更に第１図（ｂ）の側面図に示ｔ−Ｊ、うに浸漬ノズル
の内側４１而桔（Ｓ＋：）よりも外側孔面精（Ｓｏ）の
方が大である。Furthermore, as shown in the side view of FIG. 1(b), the outer hole surface (So) is larger than the inner hole surface (S+:) of the sea urchin immersion nozzle.
なお、第１図（Ｃ）に示す第１図（ａ）のＡ−Ａ線断面
図の如く吐出孔の側面１４．１４′は平行とするか（θ
３＝０°）、あるいは拡がり角度０３をもたぜて拡げた
方が好ましい。In addition, as shown in the sectional view taken along the line A-A in FIG. 1(a) shown in FIG. 1(C), the side surfaces 14 and 14' of the discharge hole are parallel (θ
3=0°), or it is preferable to expand the angle by changing the expansion angle 03.
これは吐出孔角度を拡げると、吐出流によって鋳型内溶
鋼に扁平の吐出流が形成され、溶鋼表面が攪拌されて溶
鋼のよどみがなくなり、鋳片表面疵低減に効果があるた
めである。This is because when the discharge hole angle is widened, a flat discharge flow is formed in the molten steel in the mold by the discharge flow, the surface of the molten steel is stirred, the stagnation of the molten steel is eliminated, and it is effective in reducing defects on the surface of the slab.
また、第１図（ａ）に示すように、鋳型内の溶鋼表面か
ら吐出孔７の外側上端までの深さをｈとし、浸漬ノズル
１の側面から鋳型ｌＯの側壁までの距鴫をＬとするとき
、
であることが好ましい。このようにすると、浸漬ノズル
】からの吐出流、 ２ ＋−ｔニー＋−向垢、になり、
かつモールドパウダー３と直接接触するため、溶鋼中の
介在物はモールドパウダー３によって捕集される。In addition, as shown in FIG. 1(a), the depth from the molten steel surface in the mold to the outer upper end of the discharge hole 7 is h, and the distance from the side surface of the immersion nozzle 1 to the side wall of the mold IO is L. When doing so, it is preferable that In this way, the discharge flow from the immersion nozzle becomes 2 + - t knee + - mucus,
In addition, since it comes into direct contact with the mold powder 3, inclusions in the molten steel are collected by the mold powder 3.
作用
本発明によれば、第１図（ａ）に示すように吐出孔７を
上向きに傾斜させるとともに、吐出孔上面８の角度θ１
を吐出孔下面９の角度θ２よりも大にし、かつ内側たて
寸法ｄよりも外側たて寸法りを大にすることによって、
モールドパウダー３に向って拡がりをもった北向きの吐
出流２を形成させ、また内側孔面積Ｓｒよりも外側孔面
積ＳＯを大にすることによりゆるやかな上向流が得られ
る。According to the present invention, the discharge hole 7 is tilted upward as shown in FIG. 1(a), and the angle θ1 of the upper surface 8 of the discharge hole is
By making θ2 larger than the angle θ2 of the lower surface 9 of the discharge hole, and making the outer vertical dimension larger than the inner vertical dimension d,
A gentle upward flow is obtained by forming a northward discharge flow 2 that expands toward the mold powder 3, and by making the outer hole area SO larger than the inner hole area Sr.
これにより引抜速度を大きくしても吐出流２は、指向性
の強い流れとならず、吐出流速を小さく抑えることがで
きるために、鋳型固溶鋼表面ヤの波立ちを小さくする効
果がある。As a result, even if the drawing speed is increased, the discharge flow 2 does not become a highly directional flow, and the discharge flow velocity can be kept low, which has the effect of reducing ripples on the surface of the mold solid solution steel.
また、モールドパウダー３に向って拡がりをもった緩や
かな吐出流２がモルトパウダー３と接触するため、鋳型
内の溶鋼中の非金属介在物がモールドパウダー３に捕集
され、非金属介在物の少ない清浄鋼を得ることが可能で
ある。In addition, since the gentle discharge flow 2 that spreads toward the mold powder 3 comes into contact with the malt powder 3, non-metallic inclusions in the molten steel in the mold are collected by the mold powder 3, and the non-metallic inclusions are collected in the mold powder 3. It is possible to obtain less clean steel.
実施例
閉塞した底部近傍の両側に吐出孔を備えた浸漬ノズルお
よび寸法７３５ｍｍ ｌ’ｌｌ Ｘ １６０ｍ＋ｍ厚の
鋳型を用い、鋳型自溶鋼表面から吐出孔の」二面までの
深さを１３０ｍ＋ａとして、５ＵＳ３０４ステンレス溶
鋼をｉ！Ｉ統鋳造し、通常の製造工程によって板厚１．
０ｍｍ、幅７２０■の薄板成品を製造した。Example Using a submerged nozzle with discharge holes on both sides near the closed bottom and a mold with dimensions of 735 mm l'll x 160 m+m thick, the depth from the self-melting steel surface of the mold to the two sides of the discharge hole was 130 m+a, 5US304 Stainless Steel Molten Steel i! I-type casting is performed, and the board thickness is 1.
A thin plate product with a diameter of 0 mm and a width of 720 cm was manufactured.
鋳造条ヂ１．鋳造中の湯面波立ち、およびパウダー捲込
等に起因する鋳片表面疵発生状況、非金属介在物に起因
する薄板の表面疵発生状況を表１に示ず。Casting strip 1. Table 1 does not show the occurrence of defects on the surface of the slab due to undulation of the hot metal surface during casting, the incorporation of powder, etc., and the occurrence of defects on the surface of the thin plate due to non-metallic inclusions.
表１によれば、鋳造省号Ｂの吐出孔の側面拡がり角度０
３が０°の場合は吐出流の扁Ｙ度が小さいため、溶鋼表
面の攪拌作用がやや不足し、鋳片および薄板ともに疵の
発生がｎ５Ａと比べてやや多い。According to Table 1, the side widening angle of the discharge hole for casting ministry number B is 0.
When 3 is 0°, the degree of flatness of the discharge flow is small, so the stirring action on the surface of the molten steel is somewhat insufficient, and the occurrence of defects in both slabs and thin plates is slightly more than in n5A.
鋳造符号Ｃは本発明例と吐出孔角度を同レベルとしたも
のであるため吐出流、はパウダーと接触するが、吐出流
速が過大となって溶鋼湯面の披立ちが大きくなるため、
鋳片表面疵が多い。Casting code C has the same discharge hole angle as the present invention example, so the discharge flow contacts the powder, but the discharge flow velocity becomes excessive and the molten steel surface becomes large.
There are many surface defects on the slab.
鋳造符号り、Ｆは溶鋼湯面の波立ちを抑えるために、吐
出孔の−に而および下面角度を小さくしたものであるが
、吐出流がモールドパウダーと充分に接触しないため、
薄板表面疵が多い。The casting code, F, is the one in which the - and bottom angles of the discharge hole are made small in order to suppress ripples on the surface of the molten steel, but since the discharge flow does not make sufficient contact with the mold powder,
There are many surface scratches on the thin plate.
鋳造符号Ｆ、Ｇは鋳片の引抜速度（Ｍ造速度）を小さく
した例であるが、改善効果は小さく、本発明例と比べて
不良である。Casting codes F and G are examples in which the slab drawing speed (M manufacturing speed) is reduced, but the improvement effect is small and is inferior to the examples of the present invention.
（以下余白）
発明の効果
本発明によれば、吐出流を緩やかにモールドパウダー全
域と直接接触させることができるので、鋳型固溶鋼表面
の波立ちを少なく抑えるとともに、モールドパウダーへ
の非金属介在物の捕集能を向−１−させることができ、
鋳片品質を著しく向ｌ−させることができる。(The following is a blank space) Effects of the Invention According to the present invention, since the discharge flow can be gently brought into direct contact with the entire area of the mold powder, ripples on the surface of the mold solid solution steel can be suppressed to a minimum, and non-metallic inclusions in the mold powder can be suppressed. It is possible to improve the collection ability,
The quality of the slab can be significantly improved.
第１図（ａ） 、 （ｂ） 、 （ｃ）は本発明の実施
例を示す説明図、第２１’４は従来の下向浸漬ノズルの
鋳型内への溶鋼注入状況を示す断面図、第３図は従来の
１−向浸漬ノズルの鋳型内への溶鋼注入状況を示す断面
図、第４図は連続鋳造におけるタンディツシュへの次鍋
溶鋼の注入１ム様図、第５図は従来の浸漬ノズルの鋳型
内−５の溶鋼注入状況を示す断面図である。
１・争―浸漬ノズル、２１１１１１吐出論１．３−＠φ
モールドバウター、４・−−底ｉ、５ ｅ 会−スラグ
層、６・ｆｉ１１タンディッシ−０，７・−・吐出孔、
８争−Φ上面、９＠Φ・Ｉ−’面、１０Φ９拳鈷型、１
１−・”取鍋、１２−９番ロングノズル、１３争・・溶
鋼、１４．１４′・・・側面、θ、−・参吐出孔り面の
水平方向に対する角度、θ２−・・吐出孔下面の水平方
向に対する角度、θ３争φ會吐１１１孔の拡がり角ＩＬ
ｈ・・・溶鋼表面から吐出孔の外側上端までの深さ、Ｌ
・・φノズルの側面から鋳型側壁までの距離、ｄ・−・
内側たて寸法、Ｄ・・・外側たて寸法、ＳＩ舎・・内側
孔面積、Ｓ。
・・・外側孔面積。FIGS. 1(a), (b), and (c) are explanatory diagrams showing embodiments of the present invention, FIG. Figure 3 is a cross-sectional view showing how molten steel is injected into the mold using a conventional one-way immersion nozzle, Figure 4 is a view showing how molten steel is injected into the tundish in a continuous casting pot, and Figure 5 is a conventional immersion nozzle. FIG. 3 is a cross-sectional view showing the state of injection of molten steel into the mold-5 of the nozzle. 1. Dispute - Immersion nozzle, 211111 discharge theory 1.3-@φ
Mold bouter, 4.--Bottom i, 5.e.-Slag layer, 6.fi11 Tandisi-0,7.--Discharge hole,
8 fights - Φ top surface, 9 @ Φ・I-' surface, 10 Φ9 fist type, 1
1-・Ladle, No. 12-9 long nozzle, 13th... Molten steel, 14.14'... Side, θ, - Angle of the discharge hole surface with respect to the horizontal direction, θ2-... Discharge hole The angle of the lower surface with respect to the horizontal direction, the expansion angle IL of the 111 holes of θ3 and φ
h...Depth from the molten steel surface to the outer upper end of the discharge hole, L
・・Distance from the side of the φ nozzle to the side wall of the mold, d・−・
Inner vertical dimension, D...Outer vertical dimension, SI building...Inner hole area, S. ...Outer hole area.
Claims (1)
４）近傍の両側面に溶湯の吐出孔（７）を備え、該吐出
孔（７）は、 （イ）上面（８）が外側に向って上方に傾斜しており、 （ロ）下面（９）が水平になっているか、または外側に
向って上方に傾斜しており、 （ハ）内側たて寸法（ｄ）よりも外側たて寸法（Ｄ）が
大であり、 （ニ）内側孔面積（Ｓ＿Ｉ）よりも外側孔面積（Ｓ＿Ｏ
）が大であることを特徴とする連続鋳造用ノズル。[Claims] In a continuous casting immersion nozzle (1), a closed bottom part (
4) Discharge holes (7) for molten metal are provided on both sides nearby, and the discharge holes (7) have (a) an upper surface (8) inclined upwardly toward the outside, and (b) a lower surface (9). ) is horizontal or slopes upward toward the outside, (c) the outside vertical dimension (D) is larger than the inside vertical dimension (d), and (d) the inside hole area. (S_I) is larger than the outer hole area (S_O
) is a continuous casting nozzle characterized by a large diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19396186A JPS6352756A (en) | 1986-08-21 | 1986-08-21 | Submerged nozzle for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19396186A JPS6352756A (en) | 1986-08-21 | 1986-08-21 | Submerged nozzle for continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6352756A true JPS6352756A (en) | 1988-03-05 |
| JPH0238058B2 JPH0238058B2 (en) | 1990-08-28 |
Family
ID=16316641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19396186A Granted JPS6352756A (en) | 1986-08-21 | 1986-08-21 | Submerged nozzle for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6352756A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039052A1 (en) * | 2005-10-04 | 2007-04-12 | Sms Demag Ag | Submerged nozzle for liquid metals, especially steel materials |
| EP2092998A4 (en) * | 2006-12-05 | 2016-10-12 | Nippon Steel & Sumitomo Metal Corp | Molten metal continuous casting method |
| CN110035844A (en) * | 2016-09-16 | 2019-07-19 | 日新制钢株式会社 | Continuous casting process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2250796T3 (en) * | 2003-08-01 | 2006-04-16 | Hof Te Fiennes N.V. | SYSTEM AND PROCEDURE OF COLADA OF NON-FERRIC METALS. |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426338U (en) * | 1977-07-25 | 1979-02-21 | ||
| JPS58107253U (en) * | 1982-01-09 | 1983-07-21 | 品川白煉瓦株式会社 | Immersion nozzle for continuous casting |
| JPS6210942U (en) * | 1985-07-08 | 1987-01-23 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121137A (en) * | 1982-12-27 | 1984-07-13 | Shin Etsu Chem Co Ltd | Preparation of quartz glass tube |
-
1986
- 1986-08-21 JP JP19396186A patent/JPS6352756A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426338U (en) * | 1977-07-25 | 1979-02-21 | ||
| JPS58107253U (en) * | 1982-01-09 | 1983-07-21 | 品川白煉瓦株式会社 | Immersion nozzle for continuous casting |
| JPS6210942U (en) * | 1985-07-08 | 1987-01-23 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039052A1 (en) * | 2005-10-04 | 2007-04-12 | Sms Demag Ag | Submerged nozzle for liquid metals, especially steel materials |
| EP2092998A4 (en) * | 2006-12-05 | 2016-10-12 | Nippon Steel & Sumitomo Metal Corp | Molten metal continuous casting method |
| CN110035844A (en) * | 2016-09-16 | 2019-07-19 | 日新制钢株式会社 | Continuous casting process |
| EP3513888A4 (en) * | 2016-09-16 | 2020-04-29 | Nippon Steel Stainless Steel Corporation | Continuous casting method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0238058B2 (en) | 1990-08-28 |
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