JPH03205349A - Basic nozzle - Google Patents
Basic nozzleInfo
- Publication number
- JPH03205349A JPH03205349A JP1344033A JP34403389A JPH03205349A JP H03205349 A JPH03205349 A JP H03205349A JP 1344033 A JP1344033 A JP 1344033A JP 34403389 A JP34403389 A JP 34403389A JP H03205349 A JPH03205349 A JP H03205349A
- Authority
- JP
- Japan
- Prior art keywords
- mgo
- clinker
- cao
- zro2
- nozzle
- 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
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 239000006104 solid solution Substances 0.000 claims abstract description 13
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 8
- 239000010439 graphite Substances 0.000 claims abstract description 8
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 5
- 239000010459 dolomite Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000005011 phenolic resin Substances 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims abstract 2
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 239000011233 carbonaceous binding agent Substances 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
連続鋳造用タンディソシュからモールドへ注入する浸漬
ノズル及び溶＠鍋からタンディソシュヘ注入するロング
ノズルに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] This invention relates to a submerged nozzle for injecting from a tandy soche into a mold for continuous casting, and a long nozzle for injecting from a molten pot to a tandy sosh.
ノズル、特に浸漬ノズルは、溶鋼中のＡβ又ばＴｉなど
がノズル内面に蓄積し、ノズル閉塞を生じ鋳込みが不可
能となるケースが多い。その原因の一つにＡｌｌｚＯｓ
Ｃ系のノズルのＡｆｆｔ０３粒子に，＋１が付着し
、蓄積していくものと考えられている。In the case of nozzles, especially immersion nozzles, Aβ or Ti in molten steel often accumulates on the inner surface of the nozzle, causing nozzle blockage and making casting impossible. One of the reasons is AllzOs
It is thought that +1 attaches to the Afft03 particles of the C-based nozzle and accumulates.
また、パウダーラインに於いては、Ａβ，０３Ｃ系のノ
ズルでは耐食性に乏しく、パウダーライン部にはＺｒＯ
，−Ｃ系の材質を用いて同時成形を行った二層式のもの
を併用して対応している。In addition, in powder lines, Aβ,03C type nozzles have poor corrosion resistance, and ZrO
, -C-based materials are used in combination with a two-layer type that is simultaneously molded.
さらに、ノズル閉塞を防止する目的で浸漬ノズルやその
上部にあるスライドゲートや下部ノズルからガスを吹き
込むことによって、溶鋼流とノズル内面に気体薄膜を作
り、蓄積を防止しようという試みがある。Furthermore, in order to prevent nozzle clogging, there is an attempt to prevent accumulation by blowing gas through a submerged nozzle, a slide gate above it, or a lower nozzle to create a thin film of gas on the molten steel flow and the inner surface of the nozzle.
ノズルはＣ系であるため、熱伝導率が高く、ノズル表面
は大気中にあるため、勢い放散熱量が大きく、ノズル内
面との温度勾配が大きい。従って、ノズルの外面をセラ
ξツクファイバーで保温して、ノル内面の温度降下を少
なくして、蓄積物を溶かして戒長しないようにするとい
う方法もとられている。Since the nozzle is C-based, it has high thermal conductivity, and since the nozzle surface is in the atmosphere, the amount of heat dissipated is large and the temperature gradient with the inner surface of the nozzle is large. Therefore, a method has been adopted in which the outer surface of the nozzle is insulated with ceramic fibers to reduce the temperature drop on the inner surface of the nozzle, thereby preventing the accumulated material from melting and becoming stale.
しかし、いずれも決定的な解決方法とはなっていない。However, neither method is a definitive solution.
また、二層式のものは、各層の膨張率の差により、層間
から剥離を生じることもある。Furthermore, in the case of a two-layer type, separation may occur between the layers due to the difference in expansion coefficient of each layer.
この発明は上記従来の事情に鑑みて提案されたものであ
って、ＡＮやＴｉによるノズル閉塞が生じず、しかも、
耐食性に優れた塩基性ノズルを提供することを目的とす
るものである。This invention was proposed in view of the above-mentioned conventional circumstances, and does not cause nozzle clogging due to AN or Ti.
The purpose of this invention is to provide a basic nozzle with excellent corrosion resistance.
（課題を解決するための手段）
上記目的を達或するためにこの発明は以下の手段を採用
する。すなわち、ドロマイトとジルコニアをＣａＯ−Ｍ
ｇＯ：ＺｒＯｚ比がｌ：２〜１：１ （モル比）になる
ように粉砕・混合し、溶融するか、もしくは高温焼成す
ることによって得られた、ＭｇＯ−Ｚｒ０２ ＋ＣａＯ
−ＺｒＯ２の連続固溶体を主戒分としたタリンカー（Ｃ
ＭＺクリンカーと称す）を用い、該ＣＭＺクリンカー：
８０〜１０％、ＭｇＯタリンカー８０〜１０％、黒鉛お
よびまたは炭素を３〜２０％にフェノールレジン等の炭
素系結合剤をバインダーとして２〜２０％添加し、加圧
成形し、還元焼成したものである。(Means for Solving the Problems) In order to achieve the above object, the present invention employs the following means. That is, dolomite and zirconia are CaO-M
MgO-Zr02 +CaO obtained by crushing and mixing so that the gO:ZrOz ratio is 1:2 to 1:1 (molar ratio), and melting or firing at high temperature.
- Talincar (C) whose main component is a continuous solid solution of ZrO2
The CMZ clinker:
80-10% MgO tarinker, 3-20% graphite and/or carbon, 2-20% carbon-based binder such as phenol resin added as a binder, pressure molded, and reduced firing. be.
本発明は、ノズルの骨材材質を根本的に変えることによ
って、ノズルの閉塞防止を図ろうとするものである。即
ち、耐スポール性の点からカーボンの使用はやむを得な
いと考えられる。従って、高熱伝導率による溶鋼面の冷
却はある程度やむを得ないとする。しからば、骨材をＡ
ＩＶ．２０３から他のものに変えることによって、ＡＮ
の蓄積を極力避けようとするものである。The present invention attempts to prevent nozzle clogging by fundamentally changing the aggregate material of the nozzle. That is, it is considered that the use of carbon is unavoidable from the standpoint of spall resistance. Therefore, it is assumed that cooling the molten steel surface by high thermal conductivity is unavoidable to some extent. Therefore, the aggregate is A
IV. By changing from 203 to something else, AN
The aim is to avoid the accumulation of
Ａｌ２０３Ｃ系ノズルでは、析出するＡ７！は同系列の
ものであり、容易にＡＩｌはＡＡ２０３に蓄積する。そ
こで、従来から塩基性であれば蓄積し難いと言われてい
た。しかし、ＣａＯやＭｇＯ単味とＣの組合わせではＣ
ａ○の消化やＭｇＯの分解などで実用化に至らなかった
。本発明は耐食性の向上に効果のあるＺｒ○２でＣａ○
やＭｇＯとの連続固溶体を形威させることで、ＣａＯや
Ｍｇｏの消化、分解を防ぐと共に、高耐火度である粒子
を提供し、ノズル閉塞を防止しようとするものである。In the Al203C nozzle, A7! are of the same series, and AIl easily accumulates in AA203. Therefore, it has traditionally been said that if it is basic, it is difficult to accumulate. However, in the combination of CaO or MgO alone and C, C
It was not put into practical use because of the digestion of a○ and the decomposition of MgO. The present invention uses Zr○2 and Ca○2, which are effective in improving corrosion resistance.
By forming a continuous solid solution with CaO and MgO, the purpose is to prevent digestion and decomposition of CaO and Mgo, provide particles with high refractory properties, and prevent nozzle clogging.
ドロマイト（焼戒品又は原石）とジルコニア（未安定化
ジルコニア、又はバソデライト）をＣａ○・ＭｇＯ：Ｚ
ｒ０２が１：２〜１：１（モル比）になるように調合し
、電融もしくは高温焼成することによって生威するＭ
ｇ Ｏ−Ｚ ｒ Ｏ ２ ＋ Ｃａｏ−Ｚｒ○２の連続
固溶体は、高融点で鉄酸化物十スラグ（主とＣａ○＋Ｓ
ｉＯ２）に対して高耐食性を示す。それは、元々この固
溶体が塩基性？示しているからである。微構造的には、
ＭｇＯ・ＺｒＯ２の固溶体の中にＣａＯ・ＺｒＯｚの固
溶体が球状で包み込まれているようになっている。Dolomite (burned or raw stone) and zirconia (unstabilized zirconia or bathoderite) are mixed with Ca○/MgO:Z
M that can be produced by mixing it so that r02 is 1:2 to 1:1 (molar ratio) and heating it by electric melting or high-temperature firing.
The continuous solid solution of g O-Z r O 2 + Cao-Zr○2 has a high melting point and contains ten iron oxide slags (mainly Ca○ + S
Shows high corrosion resistance against iO2). Does this mean that this solid solution is originally basic? This is because it shows. Microstructurally,
A solid solution of CaO.ZrOz is wrapped in a spherical shape in a solid solution of MgO.ZrO2.
ＺｒＯｚが少ない比率の場合は、ＣａＯとＺｒ０２が優
先的に反応してＣａＯ−ＺｒＯｚを生じるため、遊離の
ＣａＯが残ることは無い。従って、この固溶体は消化に
対しては非常に強固な抵抗力がある。When the ratio of ZrOz is small, CaO and Zr02 react preferentially to produce CaO-ZrOz, so that no free CaO remains. Therefore, this solid solution has very strong resistance to digestion.
製造した固溶体を粉砕し、所定の粒度に篩分したものと
カーボン（黒鉛）及びバインダーを混練して、加圧或形
し、還元焼成することによってカーボンポンドを形威し
たノズルは、この固溶体のクリンカーの周囲をカーボン
（黒鉛）が包んでいるような構造となっている。溶鋼流
がこのカーボンを損耗すると、固溶体クリンカーの表面
がＮＷａ中に露出してくるが、溶鋼に対する反応性が小
さいため、タリン力一の損傷は殆ど生じない。溶鋼中の
ＡＮやＴｉが付着すると、ＣａＯ−Ａ４■０．−ＺｒＯ
．やＭｇＯ−Ａ４２０３−Ｚｒ０２、ＣａＯ−ＴｉＯ−
ｚ −ＺｒＯｚ 、ＭｇＯ−ＴｉＯｚＺｒＯ２のやや低
融点の固溶体を生威し、溶鋼の熱と温度で半溶融の状態
となり、溶鋼流の圧カで削られるように流出し、モール
ド内でパウダーと反応し滓化してしまう。The produced solid solution is pulverized and sieved to a predetermined particle size, and carbon (graphite) and a binder are kneaded, pressurized or shaped, and reduced and fired to form a carbon pond. It has a structure in which carbon (graphite) is wrapped around the clinker. When the molten steel flow wears away this carbon, the surface of the solid solution clinker is exposed in the NWa, but since the reactivity to the molten steel is small, almost no damage occurs. When AN and Ti in molten steel adhere, CaO-A4■0. -ZrO
．． , MgO-A4203-Zr02, CaO-TiO-
A solid solution of Z-ZrOz and MgO-TiOzZrO2 with a slightly low melting point is produced, becomes semi-molten by the heat and temperature of the molten steel, flows out as if being scraped by the pressure of the molten steel flow, and reacts with the powder in the mold. It turns into slag.
モールド内のパウダーライン部では、当然低融点のパウ
ダーとスラグが有在し、ノズルの本体を侵食しようとす
るが、この固溶体はもともと塩基性であり、スラグ類の
侵食には反応し難いものであるから、従来のＡｊ２２０
ｌＣ系より秀れているのは当然であり、Ｚ ｒ Ｏ ｚ
Ｃ系よりもＣａ○やＭｇＯの存在が耐食性を向上さ
せている。従って、このクリンカーを使用することによ
り、タリンカー＋Ｃの一或分でノズル全体を作製するこ
とができる。従来のアルもナーグラファイトとジルコニ
アーグラファイトの二層構造にする必要がないため、層
間からの剥離を生しる心配もない。Naturally, low melting point powder and slag exist in the powder line part of the mold, and they try to erode the nozzle body, but this solid solution is originally basic and does not react easily to the slag attack. Because there is a conventional Aj220
It is natural that it is superior to the LC type, and Z r O z
The presence of Ca○ and MgO improves corrosion resistance compared to C-based steel. Therefore, by using this clinker, the entire nozzle can be manufactured in one minute of Tallinker+C. Since there is no need for conventional aluminum to have a two-layer structure of ner graphite and zirconia graphite, there is no need to worry about peeling between the layers.
ドロマイト原石とバンデライトを用い、ＣａＯ・Ｍ ｇ
Ｏ ： Ｚ ｒ Ｏ ２比が１：ｌ （モル比）とな
るように調合・混合粉砕したものを、電融して製造した
電融物を１ｆｉ以下に粉砕し、１〜０．５ｆｌ、０．５
ｍｍ〜に篩分け。又、別に７４μ以下が９０％以上にな
るように微粉砕した微粉を作或した。Using dolomite raw stone and banderite, CaO・Mg
The molten material prepared by mixing and pulverizing the mixture so that the O:ZrO2 ratio is 1:l (molar ratio) is pulverized to 1fi or less, and 1 to 0.5fl, 0. .5
Sieve into mm. In addition, a fine powder was prepared by pulverizing the powder so that 90% or more of the powder was 74μ or less.
これらを下記第１表のように配合し、漫清ノズルを作威
した。These were mixed as shown in Table 1 below, and a Mansei nozzle was made.
第 １ 表
作製手順は従来のＡＮ，○’ｓ Ｃ系ノズルと同じと
した。得られたノズルはＡ．１ｚＯ３ Ｃ系ノズルと同
様低気孔率で弾性率も同様であった。Table 1 The manufacturing procedure was the same as that for conventional AN, ○'s C nozzles. The obtained nozzle was A. Like the 1zO3 C-based nozzle, it had a low porosity and a similar modulus of elasticity.
第２表にＣＭＺクリンカー（ＣａＯ−Ｍｇ〇一１：１モ
ル比）の物性値、第３表に上記タリンカーを用いて作威
した浸漬ノズルの物性値を示す。Table 2 shows the physical properties of the CMZ clinker (CaO-Mg 1:1 molar ratio), and Table 3 shows the physical properties of the immersion nozzle made using the above clinker.
第 ２ 表 ＣＭＺクリンカーの物姓貝ｎ洩ｑυ嚇
： ３．７０％ 見掛比重：３．２３ かさ比重
８ ３． １１｛じ崗Ｄ戊（％）
ＭｇＯ ＣａＯ Ｓｉｆｔ Ａ１ｇＯｓ
Ｆｅ＊Ｏｓ ＺｒＯｔ１５．８０ ２３．６８
４．０８ ０．９４ ３．６２
４９．５８〔発明の効果〕
このノズルを用いて連続鋳造を行った。同一タンディッ
シュで第１ストランドには従来のＡＩ．Ｏ３−Ｃ系を第
２ストランドには本発明品を用いて同一鋼種で同時に鋳
込み、その効果を確認した。Table 2 CMZ clinker leakage: 3.70% Apparent specific gravity: 3.23 Bulk specific gravity 8 3. 11{JigangD戊(%) MgO CaO Sift A1gOs
Fe*Os ZrOt15.80 23.68
4.08 0.94 3.62
49.58 [Effect of the invention] Continuous casting was performed using this nozzle. In the same tundish, the first strand has conventional AI. The O3-C system was simultaneously cast in the same steel type using the product of the present invention for the second strand, and its effect was confirmed.
その結果４連目からＡ．ｘ，ｏ．−ｃ系のノズルは詰ま
り気味となり、鋳込速度が落ちてきた。本発明品は最柊
８連目までほとんど鋳込速度は変わらなかった。使用後
品を切断すると、Ａ７！ｚｃｈＣ系ノズルは突出口付近
に蓄積物が付着し、孔を小さくしていた。本発明品には
全く蓄積がみられず、内面は均質に滑らかに溶損してい
た。孔はむしろ拡大気味であり、パウダーライン部はＺ
Ｇ材質より溶損が大きかった。As a result, A. x, o. -The nozzles of the c series became clogged, and the casting speed decreased. In the product of the present invention, the casting speed remained almost unchanged up to the 8th continuous cast. When you cut the product after use, it will be A7! The zchC nozzle had deposits attached near the outlet, making the hole smaller. No accumulation was observed in the product of the present invention, and the inner surface was homogeneously and smoothly eroded. The hole is rather enlarged, and the powder line part is Z
The melting loss was greater than that of G material.
１ Ｏ1 O
Claims (1)
Ｏ＿２比が１：２〜１：１（モル比）になるように粉砕
・混合し、溶融するか、もしくは高温焼成することによ
って得られた、ＭｇＯ・ＺｒＯ＿２＋ＣａＯ・ＺｒＯ＿
２の連続固溶体を主成分としたクリンカー（ＣＭＺクリ
ンカーと称す）を用い、該ＣＭＺクリンカー：８０〜１
０％、ＭｇＯクリンカー８０〜１０％、黒鉛およびまた
は炭素を３〜２０％にフェノールレジン等の炭素系結合
剤をバインダーとして２〜２０％添加し、加圧成形し、
還元焼成してなる塩基性ノズル。(1) Dolomite and zirconia with CaO/MgO:Zr
MgO・ZrO_2+CaO・ZrO_ obtained by crushing and mixing so that the O_2 ratio is 1:2 to 1:1 (molar ratio), and melting or firing at high temperature.
Using a clinker (referred to as CMZ clinker) containing a continuous solid solution of No. 2 as a main component, the CMZ clinker: 80 to 1
0% MgO clinker, 80-10% MgO clinker, 3-20% graphite and/or carbon, 2-20% carbon-based binder such as phenol resin as a binder, and pressure molding.
A basic nozzle made by reduction firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1344033A JP3038222B2 (en) | 1989-12-29 | 1989-12-29 | Basic nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1344033A JP3038222B2 (en) | 1989-12-29 | 1989-12-29 | Basic nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03205349A true JPH03205349A (en) | 1991-09-06 |
| JP3038222B2 JP3038222B2 (en) | 2000-05-08 |
Family
ID=18366139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1344033A Expired - Lifetime JP3038222B2 (en) | 1989-12-29 | 1989-12-29 | Basic nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3038222B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0824509A1 (en) * | 1995-05-02 | 1998-02-25 | Baker Refractories | Apparatus for discharging molten metal in a casting device and method of use |
| WO2000000450A1 (en) * | 1998-06-26 | 2000-01-06 | Didier-Werke Ag | Basic refractory ceramic hollow body |
| JP2006239757A (en) * | 2005-03-04 | 2006-09-14 | Kurosaki Harima Corp | Continuous casting nozzle |
| JP2008055452A (en) * | 2006-08-30 | 2008-03-13 | Kurosaki Harima Corp | Hardly adherent nozzle for continuous casting |
| JP2015062948A (en) * | 2013-09-26 | 2015-04-09 | 新日鐵住金株式会社 | Scum weir and method and apparatus for production of thin slab |
-
1989
- 1989-12-29 JP JP1344033A patent/JP3038222B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0824509A1 (en) * | 1995-05-02 | 1998-02-25 | Baker Refractories | Apparatus for discharging molten metal in a casting device and method of use |
| EP0824509A4 (en) * | 1995-05-02 | 1998-08-12 | Baker Refractories | Apparatus for discharging molten metal in a casting device and method of use |
| WO2000000450A1 (en) * | 1998-06-26 | 2000-01-06 | Didier-Werke Ag | Basic refractory ceramic hollow body |
| US6533994B2 (en) | 1998-06-26 | 2003-03-18 | Didier-Werke Ag | Alkaline, refractory ceramic hollow item |
| JP2006239757A (en) * | 2005-03-04 | 2006-09-14 | Kurosaki Harima Corp | Continuous casting nozzle |
| JP4629461B2 (en) * | 2005-03-04 | 2011-02-09 | 黒崎播磨株式会社 | Continuous casting nozzle |
| JP2008055452A (en) * | 2006-08-30 | 2008-03-13 | Kurosaki Harima Corp | Hardly adherent nozzle for continuous casting |
| JP4751277B2 (en) * | 2006-08-30 | 2011-08-17 | 黒崎播磨株式会社 | Non-adhesive continuous casting nozzle |
| JP2015062948A (en) * | 2013-09-26 | 2015-04-09 | 新日鐵住金株式会社 | Scum weir and method and apparatus for production of thin slab |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3038222B2 (en) | 2000-05-08 |
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