JPS5921574A - Immersion nozzle for continuous casting - Google Patents
Immersion nozzle for continuous castingInfo
- Publication number
- JPS5921574A JPS5921574A JP57130510A JP13051082A JPS5921574A JP S5921574 A JPS5921574 A JP S5921574A JP 57130510 A JP57130510 A JP 57130510A JP 13051082 A JP13051082 A JP 13051082A JP S5921574 A JPS5921574 A JP S5921574A
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- zirconia
- continuous casting
- immersion nozzle
- corrosion resistance
- 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
Landscapes
- Continuous Casting (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本′発明は、タンデイツ/ユかもモールドに連結さオl
、溶X枦・2・何イ1.防市、E−ルド内での溶鋼流部
1佃1、スグラツンコ−及びスラグσ)惹き込み防止を
目的とj、”C使用さiIる沖セゴに一清用浸消ノズル
・のα9(て関−シイ)も())である。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an o
, SoluX枦・2・Whati1. For the purpose of preventing the molten steel flow section 1, 1, 1, 1, slag and slag σ) from being drawn into the molten steel flow area in the E-field, an immersion nozzle for Issei was installed at Oki Sego. Kan-shii) is also ()).
fと来こ才1らの侵演ノズルとし、ては良品質ので14
゜
H’ I牛状得メ・f−め、十f−廷頷の連続′凸造享
・円γ桁に操、lする/、−め、耐スポーツIV11、
耐食性、気密性の而から溶部1石芦刊並びに黒鉛アルミ
ナTIが一射に使用されてきた。しり・し連続@肩の多
連納搏j業において溶幹石外′mはモールドl’Hτへ
゛7欝の酸化防止′!4を1」的として添υ[1さ第1
ろモールドパウダーに対′する耐食i′1−に比較的優
れて℃・るが、高マンガン鋼に対し、て溶損が汰と(・
といへ欠点がある。一方黒舵一アルミJ′ν1、r、〃
仝ガ](τ対しては(1傷され鮒いけ第1ども、モール
ドパウダー((対4る1貞+’l−に劣ると℃・う欠ル
があった。この黒鉛系+s我σ)千−ル1バウターに苅
−する)耐食性の改善策とし、ては、黒鉛−ジルー1!
−アシ4テ、((1是示につい壬+*討[、た結手、同
(−仁1・か−1−−−4ドパウダーに対1〜て優れた
4食性を示−寸のは、次C)曲りである8二どがオ(J
つた。As the invasion nozzle of F and Raikosai 1 etc., it is of good quality so
゜H' I cow-like acquisition me, f-me, 10f-court nod sequence' convex construction, operation to the yen gamma digit, l to /, -me, anti-sport IV11,
Because of their corrosion resistance and airtightness, welded steel and graphite alumina TI have been used for one shot. In the continuous delivery @shoulder work, the outside of the lava stone is placed in the mold l'Hτ for 7 degrees of oxidation prevention! Add υ [1 is the first
It has relatively good corrosion resistance i'1- against filter mold powder, but it suffers from melting loss against high manganese steel.
There are some drawbacks. On the other hand, black rudder one aluminum J′ν1, r,〃
For [τ] (1 scratched crucian carp first, mold powder ((vs. 4 ru 1 +'l- was inferior to ℃ and cracks. This graphite type + sga σ) As a measure to improve corrosion resistance, graphite-Giroux 1!
- Ashi 4 Te, (((1 show, 壬 + * T [, ta Yuite, same (- Jin 1, - 1 --- 4 Do Powder vs. is the next C) curve.
Ivy.
−1なわち、黒鉛−アルミノ−nにお(・ては、カーボ
ンボンドが溶鋼への溶解べ゛′−シ句、中の()・°化
で消失し、−アルミナ屑材が本ゲのまま蒲出し、十〜傷
されるのにλ1し、黒鉛−ジ、tb:y = 7 pI
に惇いては、n・山中、ジルコニア・11利が結晶惜t
の変化により微+Yll 7’3:粒:丁に分解さ)1
1、それらがれんが粉動面を全域に暇っテ個い、モール
ドパウダーと反。-1 In other words, in the case of graphite-alumino-n, the carbon bond disappears when it melts into molten steel, and the alumina scrap material disappears due to the melting of the material. Leave it as it is, λ1 to be scratched, graphite-di, tb:y = 7 pI
In the end, n. Yamanaka, zirconia, 11th profit are missing crystals.
Due to the change in
1.The bricks are spread over the entire area of the powder moving surface, and are in contact with the mold powder.
L5;シ、高粘性のガラスト形成するとと゛によってカ
ーボンボンドの消失を・防fト、するとともに、モール
ドパウダーのイJ入を抑111するために優れた耐食性
を示すものである。1イつて、同4A質については、耐
f’t pl二〇点においてはジルコニア惜が多く、黒
鉛16が少ないけど稼動面に形成されるガラスの粘性が
高くなるため、有利であるといえる。L5: By forming a highly viscous glass, it prevents the loss of carbon bonds and suppresses mold powder intrusion, thereby exhibiting excellent corrosion resistance. First, regarding the same 4A quality, it can be said that it is advantageous because it has a large amount of zirconia and a small amount of graphite 16, but the viscosity of the glass formed on the moving surface increases when the f't pl resistance is 20 points.
一方、中余I型晶系のパップライト原料は、10o o
C471近で転移を起こ1゛変態膨張の特性を有する
ため、黒鉛−バラブライト費は面1スポール性に劣る。On the other hand, the Papplite raw material of the middle type I crystal system is 10 o o
Since a transition occurs near C471 and has the characteristic of 1° transformation expansion, the graphite-barabrite cost is inferior to the surface 1 spall property.
この対策としては、カルシアを添加し、結晶系を立方型
に変化させ、熱膨張的に安定化させたカルシア安定化ジ
ルコニアを骨相と1′ろ黒鉛−ジルコニア質を使用−す
る場合が多い。(2かし、この場合、耐スポールF1:
は改善すれるが、使用中においても結晶形は変化しない
ム−め、稼動面におけるジルコニア骨相の分解が
□′□生じにくくなる。、すなわち、前述したような稼
□、・:ホ3jl興における高粘性ガラスが形
成され難くなる佇め、i1食性については逆に不利な結
果となる。As a countermeasure against this problem, calcia is added to change the crystal system to a cubic type, and calcia-stabilized zirconia, which is stabilized in terms of thermal expansion, is often used as a bone phase and 1' graphite-zirconia. (In this case, anti-spall F1:
However, the crystal shape does not change even during use, and the decomposition of the zirconia bone phase on the operating surface causes
□′□ Less likely to occur. That is, as mentioned above, high viscosity glass is difficult to form in the case of □, .: 3 jl, and the result is disadvantageous in terms of edibility.
本発明は、以上あようにパップライト等非安 □定
化ジルコニアを骨材とする黒鉛−ジルコニア □質
では、耐スポール性において問題があり、ま □た
、カルシア安定化ジルコニアを骨材とする黒 □鉛
−ジルコニア質においては、耐食性が問題であったのに
対し、耐スポール性及び耐食性ともに優れた黒鉛−ジル
コニア質の連続鋳造用浸漬 □:ノズルを提供する
もの・である。As mentioned above, the present invention uses unstable graphite-zirconia materials using stabilized zirconia as an aggregate, such as paplite, which have problems in spall resistance, and uses calcia-stabilized zirconia as an aggregate Corrosion resistance was a problem with black lead-zirconia, but this product provides a nozzle for continuous casting of graphite-zirconia that has excellent spalling resistance and corrosion resistance.
本発明の要旨とするところは、重殴比でマグネシアをO
15〜ま係含誓するジルコニアtθ〜trqq6.黒妬
//〜、2. g優、金属シリコンl〜7%、炭化珪素
/−1’0%からなる配合物に通常の有機バインダーを
添加して混錬し、これをラバープレス成形し、900〜
7.750Cの温度で還元雰囲気にて焼成してなること
を特徴とする連続鋳造用浸漬ノズルである
1なわち“、本発明は、従来σ)バッフ1ライ)tたは
カルシア安定化ジルコニアを骨材とする黒鉛−ジルコニ
アv1恍対し、マグネジrを添加し安定化さぜたジルコ
ニアを骨相とする黒鉛−ジルコニアII4を特徴と−す
る禅続鋳造用C−濱ノズルで本)ろ。この場合、同+4
v4は而」、スポール性においては、マグネシアで安定
fft gれているため匪れて1舊り、fた、カルシr
安定化シルコニ°1の114合と比べ、使用中は分解さ
」1、品枯1/Vガラスな彫riV シ易い′r!(徴
がある。(イ、−)て、(盲動面におけろカーボンボン
ドの酸化消失は抑制さ身1、スラグけ5侵潤L Mi+
いためm1食件にf!ff+た(]狽である。このトI
I連続鋳造用澤埴ノズルに適用した(1′4里、配スポ
ール性に優れ、また、パウダーライン部の1酬用性が改
善され、大+l+な多連鋳操猶がFil自トとなつlこ
。The gist of the present invention is to use magnesia at a heavy beating ratio.
15~ Zirconia tθ~trqq6. Black envy//~, 2. A conventional organic binder is added and kneaded to a compound consisting of g-excellent, metallic silicon l~7%, and silicon carbide/-1'0%, and this is rubber press molded.
7. The present invention is an immersion nozzle for continuous casting characterized by being fired in a reducing atmosphere at a temperature of 750C. In this case, a C-Hama nozzle for Zensoku casting is used, which is characterized by graphite-zirconia II4, which has graphite-zirconia V1 as the aggregate and stabilized zirconia with the addition of MAGNESI R. , same +4
In terms of spalling, V4 is stable with magnesia.
Compared to the stabilized silcony 114, it disintegrates during use and is easy to carve with 1/V glass! (There are signs. (I, -) (On the blind moving surface, the oxidation loss of carbon bond is suppressed.) Body 1, Slag 5 Invasion L Mi+
I'm sorry for m1 food! ff+ta(] is a takashi. This to I
Applied to the Sawahani nozzle for I continuous casting (1'4 ri, excellent spall distribution property, also improves the usability of the powder line part, allowing large + l + multiple casting operations to be performed automatically. lko.
本発明においては、ジルコニアに含有されるマグネシア
G゛[,0,智チ未満ではジルコニアを安定化さjJ:
ろ効果が小さく、また、Sチを越えるど酪膨引ゆ的(・
τ安5i?ではあるが、全体の熱膨張率が高くなり、逆
に耐スポール性に劣ることとなる。従って、O,S −
Sチの範囲が設定される。In the present invention, the zirconia is stabilized when the magnesia G contained in zirconia is less than 0.
The filtration effect is small, and it is difficult to swell and swell beyond S-chi.
τ cheap 5i? However, the overall coefficient of thermal expansion becomes high, and on the contrary, the spall resistance becomes inferior. Therefore, O,S −
The range of S is set.
シルコニ゛アの配合量については60%未満では耐食性
に劣り、g7チを超えると耐スポール性に劣る。従って
、に0〜g7チの範囲が設定される。黒鉛の配合量゛に
ついては、//チ未満では耐スポール性に劣り、また1
、2gチを・超えると耐食f’hに劣る。従つ”C//
〜、2.!l’%の範、四が設定される。金帆シリコン
は、熱間強電の向上を目的とし添加するものであるが、
/チ未満ではその効果が小さく、また、クチを超えると
剛スポール性に劣る。従って、l〜クチの範囲が設定さ
れる。炭化珪素は、使用中の耐酸化性改¥4を目的とし
て添加するものであるが、/チ未満ではその効果が小さ
く、10%を超えるとi1食性が低下するため、/〜、
/θチの範囲が設定される。If the amount of silconia is less than 60%, the corrosion resistance will be poor, and if it exceeds g7, the spalling resistance will be poor. Therefore, a range of 0 to g7 is set. Regarding the blending amount of graphite, if it is less than
If it exceeds 2 g, the corrosion resistance f'h will be poor. Follow”C//
~, 2. ! A range of l'%, 4, is set. Kinho silicon is added for the purpose of improving hot high-voltage.
If it is less than /chi, the effect will be small, and if it exceeds the mouth, the stiffness of the spall will be poor. Therefore, the range from 1 to 1 is set. Silicon carbide is added for the purpose of improving oxidation resistance during use, but if it is less than 10%, the effect will be small, and if it exceeds 10%, the edibility will decrease.
/θchi range is set.
次に本発明品についての実施例を示す。Next, examples of products of the present invention will be shown.
実施例1
表1に示−1従来拐質と本発明品を取鍋容噂り〜0冨(
y)スラプフ中続↑J−造Ftl A’r: rNノ、
Hルとして’Jj Ill汁IIQ試、験を行った。Example 1 As shown in Table 1-1 Rumor has it that the size of the ladle of the conventional material and the product of the present invention is 0 to 0.
y) Slapf middle continuation ↑J-Ftl A'r: rNノ,
I took the 'Jj Ill Juice IIQ test as a H le.
パップライトを肯(゛(とする腐/配介品(比較イ’1
1 )t、i、 、モールドパウダー((力11.てけ
’、1tch を耐用できt、71+’= j/乙引
の割合で鋳込初段1にきれつが発生l1、j゛定した耐
用は?4r)オlなかつfこ。まr、−1t7 ノ!、
シr′ツバ定化ゾνコx7を骨相とする不り1°111
合品(ll;較例)では、刈込ヒ/I 、1tJIの割
れは発!、L= lなかつf7.、 l+ζ、Achで
バラi“−ライン部(で穴(・、きり1牛じ間Pi’i
がζr、生し、た。一方、本発明品の1n、 j i’
、11合品は、?11込?71 、KIjの割れも発′
1−せず、ま1’=、 / Oc:hので・rr ft
lに第(しても充分シこ百(’ 11 t−2、flh
柑’f−’l +・(−ぞ1(このf瞥イ\ンゼI′を
確認でNた。Appreciate Pap Light (゛())
1) t, i, , mold powder ((force 11.teke', 1tch can be withstood, t, 71+' = j/Otsuhiki ratio, cracks occur in the first casting stage 1, l1, j゛) What is the determined durability? 4r) Or Nakatsu fko.Mar, -1t7ノ!,
1° 111 with Shir' brim fixed zo ν ko x7 as bone phase
In the case of the matching product (ll; comparative example), the cracking of 1tJI and 1tJI was not observed! , L= l nakatsu f7. , l + ζ, Ach and rose i"- line part (de hole (・, kiri 1 cowjima Pi'i
ζr was born. On the other hand, 1n, j i' of the product of the present invention
, 11 items? 11 included? 71, KIj cracking also occurred.
1-without, ma1'=, / Oc:h so・rr ft
11 t-2, flh
kan'f-'l +・(-zo1(I checked this f-view \inze I' and N.
−1,1 )詮−2ti1、 \\ 代理人 曽 我 道 照I )・ 41E-1,1 ) pry-2ti1, \\ Agent Teru I)・ 41E
Claims (1)
るジル:に−TAO〜g7チ、黒鉛//〜コgチ、金属
シリコン/〜7チ、炭化硅素/〜10チがら/、c6西
e合物に1山素のh機バインダーを添カロしで混練し、
こ11?ラベ=ブレス成形し5、qoor:〜/?4θ
Uの温用で還n:雰囲気にて塘成L−1てなること会で
特徴と、−′4る連李有鋳、告用沖涜ノズA。Magnesia at weight H°C /J, ,t~, (chi-containing Irujiru: -TAO~g7chi, graphite//~kogchi, metallic silicon/~7chi, silicon carbide/~10chira/ , knead one pile of h machine binder with c6 west e mixture,
This 11? Rabe = breath molding 5, qoor: ~/? 4θ
In the warm use of U, return n: In the atmosphere, Tosei L-1 Tenarukokai features, -'4 Rureri Yuki, Senjo Oki Sakai Nozu A.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57130510A JPS5921574A (en) | 1982-07-28 | 1982-07-28 | Immersion nozzle for continuous casting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57130510A JPS5921574A (en) | 1982-07-28 | 1982-07-28 | Immersion nozzle for continuous casting |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5921574A true JPS5921574A (en) | 1984-02-03 |
Family
ID=15036007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57130510A Pending JPS5921574A (en) | 1982-07-28 | 1982-07-28 | Immersion nozzle for continuous casting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5921574A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0299441A2 (en) * | 1987-07-15 | 1989-01-18 | Kurosaki Refractories Co. Ltd. | Slidding gate nozzle for special steel |
WO2005123301A1 (en) * | 2004-06-16 | 2005-12-29 | Nucor Corporation | Zirconia refractories for making steel |
US7007715B2 (en) | 2001-11-22 | 2006-03-07 | Nok Corporation | Pressure release valve |
-
1982
- 1982-07-28 JP JP57130510A patent/JPS5921574A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0299441A2 (en) * | 1987-07-15 | 1989-01-18 | Kurosaki Refractories Co. Ltd. | Slidding gate nozzle for special steel |
JPS6424069A (en) * | 1987-07-15 | 1989-01-26 | Kurosaki Refractories Co | Brick of sliding nozzle plate for special steel |
US7007715B2 (en) | 2001-11-22 | 2006-03-07 | Nok Corporation | Pressure release valve |
WO2005123301A1 (en) * | 2004-06-16 | 2005-12-29 | Nucor Corporation | Zirconia refractories for making steel |
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