WO2016068469A1 - 연속주조용 침지노즐 - Google Patents

연속주조용 침지노즐 Download PDF

Info

Publication number
WO2016068469A1
WO2016068469A1 PCT/KR2015/008949 KR2015008949W WO2016068469A1 WO 2016068469 A1 WO2016068469 A1 WO 2016068469A1 KR 2015008949 W KR2015008949 W KR 2015008949W WO 2016068469 A1 WO2016068469 A1 WO 2016068469A1
Authority
WO
WIPO (PCT)
Prior art keywords
immersion nozzle
continuous casting
cao
nozzle
mixture
Prior art date
Application number
PCT/KR2015/008949
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
김장훈
김세훈
배극남
Original Assignee
주식회사 포스코
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to CN201580058580.2A priority Critical patent/CN107073565B/zh
Priority to JP2017521580A priority patent/JP6419331B2/ja
Publication of WO2016068469A1 publication Critical patent/WO2016068469A1/ko

Links

Images

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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • 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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/111—Treating the molten metal by using protecting powders
    • 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
    • B22D41/02—Linings
    • 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
    • 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
    • B22D41/52—Manufacturing or repairing thereof
    • B22D41/54—Manufacturing or repairing thereof characterised by the materials used therefor
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates

Definitions

  • the present invention relates to an immersion nozzle for continuous casting, and more particularly, to an immersion nozzle for continuous casting that can suppress nozzle clogging by reacting with an alumina (Al 2 O 3 ) inclusion to form a low melting point material.
  • the molten steel contained in the ladle is injected into the tundish, the molten steel injected from the tundish is continuously injected into the mold to cool the molten steel first, and then the cooling water is sprayed on the surface of the first cooled slab. It is the process of making cast slab by solidifying molten steel as it cools. At this time, in the process of supplying the molten steel accommodated in the tundish into the mold, the molten steel is interrupted by a gate or a stopper installed in the tapping outlet of the tundish, and is supplied into the mold through the immersion nozzle.
  • the method using Ar gas can reduce the inclusion of inclusions on the inner wall of the immersion nozzle to some extent, but there is a limit to suppressing the inclusion of inclusions due to the cooling effect by Ar gas.
  • the method of forming a material layer containing CaO in the inner cavities is considered to be one of the most effective methods for suppressing the inclusion of inclusions on the inner wall of the immersion nozzle.
  • As the material layer containing CaO calcium zirconate (CaZrO 3 ), calcium silicate (CaO.SiO 2 ), and graphite (C) are used as shown in Korean Patent Publication No. 194-0014253. CaO elutes from the CaO and reacts with alumina to inhibit inclusion adhesion.
  • the CaO content in the inner cavity should be increased, and for this purpose, the content of calcium zirconate must be increased.
  • ZrO 2 destabilizes with CaO elution, resulting in volume change due to the phase transition from cubic or monoclinic to tetragonal at the casting temperature. do. This may cause problems such as cracking or dropping of the discharge port during casting, which is why it is impossible to increase the CaO content by increasing the calcium zirconate content.
  • the immersion nozzle is preheated at 800 to 1100 °C. This requires higher control of the immersion nozzle preheating.
  • the present invention provides an immersion nozzle for continuous casting that can suppress adhesion of inclusions by allowing a low melting point compound to be easily formed when the alumina inclusions adhere to the inner cavity.
  • the present invention provides an immersion nozzle for continuous casting that can increase the CaO content without causing problems such as cracking or dropping of the discharge port during casting.
  • the present invention provides an immersion nozzle for continuous casting using a mixture containing rare titanium (CaTiO 3 ), calcium zirconate (CaZrO 3 ), calcium silicate (CaO.SiO 2 ), and graphite (C). do.
  • the continuous casting immersion nozzle includes a tubular nozzle body, an internal hole provided to surround at least a portion of the inner wall of the nozzle body, and an outlet provided in the lower portion of the nozzle body. Is formed from a mixture containing rare titanium (CaTiO 3 ), calcium zirconate (CaZrO 3 ), calcium silicate (CaO.SiO 2 ) and graphite (C).
  • the inner cavity is formed to a thickness of 3mm to 5mm.
  • the rare titanium, calcium zirconate, calcium silicate and graphite are added in an amount of 95 wt% to 99 wt% and mixed with a binder of 1 wt% to 5 wt% with respect to 100 wt% of the mixture.
  • the rare titanium and calcium zirconate are contained in an amount of 40 wt% to 90 wt% with respect to 100 wt% of the mixture.
  • the rare titanium is contained in 5% to 50% of calcium zirconate.
  • the graphite is contained in an amount of 5 wt% to 35 wt% with respect to 100 wt% of the mixture.
  • the calcium silicate is contained in an amount of 1 wt% to 25 wt% with respect to 100 wt% of the mixture.
  • the discharge port is formed of a mixture containing rare titanium, calcium zirconate, calcium silicate and graphite.
  • the discharge port has a less CaO content than the inner cavity.
  • CaO content of the inner cavity is 15wt% to 35wt%
  • CaO content of the discharge port is 10wt% to 25wt%
  • the inner cavity and the discharge port are formed with a porosity of 15% to 35%.
  • a mixture including a rare titanium (CaTiO 3 ), calcium zirconate (CaZrO 3 ), calcium silicate (CaO.SiO 2 ), and graphite (C) To form.
  • a rare titanium (CaTiO 3 ), calcium zirconate (CaZrO 3 ), calcium silicate (CaO.SiO 2 ), and graphite (C) To form.
  • the present invention even if the preheating time of the immersion nozzle is short or the preheating temperature is low, the likelihood of problems such as crack generation and discharge port dropping becomes low, and as TiO 2 is present in the inner cavity and the CaO content is increased, The inclusion of inclusions can be effectively suppressed. Therefore, it is possible to realize the long life of the immersion nozzle to achieve the productivity and cost reduction effect at the same time.
  • FIG. 1 is a schematic view of a continuous casting apparatus is applied to the immersion nozzle according to an embodiment of the present invention.
  • Figure 2 is a cross-sectional view of the immersion nozzle for continuous casting according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a continuous casting apparatus including an immersion nozzle according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view of the immersion nozzle of the present invention.
  • the continuous casting apparatus to which the present invention is applied includes a tundish 200 for storing molten steel that has undergone a steelmaking process in the ladle 100 and a lower side of the tundish 200 to solidify the molten steel.
  • An immersion nozzle 500 for guiding the molten steel in the mold 200 to the mold 300.
  • the gate 400 may use a sliding gate, and the sliding gate may include upper and lower fixing plates 410 and 420, and a sliding plate 430 provided between the upper fixing plate 410 and the lower fixing plate 420. It includes.
  • the continuous casting device may control the tapping of the molten steel by sliding the sliding plate 430 to control the communication between the tapping hole 210 of the tundish 200 and the immersion nozzle 500.
  • the present invention is not limited thereto, and any means capable of controlling communication between the tapping hole 201 of the tundish 200 and the immersion nozzle 500 may be used.
  • the immersion nozzle 500 is formed in the tubular nozzle body 510 and the inner wall of the nozzle body 510 to guide the molten steel in the tundish 200 into the mold 300, as shown in FIG.
  • the molten steel in the immersion nozzle 500 is formed so as to be symmetrical with each other on the inner cavities 520, the sloughed portion 530 outside the nozzle body 510, and both sides of the lower part of the nozzle body 510.
  • the nozzle body 510 may be manufactured using any one material of Al 2 O 3 -C and Al 2 O 3 -SiO 2 -C, and is manufactured in a tubular shape so that molten steel can flow.
  • the slain portion 530 may be formed using a material of ZrO 2 -C, it may be formed on the outer surface of the nozzle body 510 above the discharge port 540.
  • the inner cavity 520 is formed on the inner wall of the nozzle body 510. That is, the inner cavities 520 may be formed on the inner wall of the immersion nozzle 500 to have a predetermined thickness, for example, 3 mm to 5 mm, to be in contact with the molten steel. At this time, the inner cavity 520 may be formed so as not to protrude from the inner wall of the nozzle body 510. That is, the internal hole 520 may be formed on the inner wall of the immersion nozzle 500 to a depth of 3 mm to 5 mm. Of course, the inner cavities 520 may be inserted into the inner wall of the immersion nozzle 500 at some depth and protruded from the inner wall of the immersion nozzle 500.
  • the internal hole 520 may be formed to have a length of 50% or more from the lower side in the longitudinal direction of the nozzle body 510.
  • the inner cavity 520 is preferably formed on the entire inner wall of the nozzle body 510.
  • the inner cavity 520 of the present invention may be formed using a mixture of rare titanium (CaTiO 3 ), calcium zirconate (CaZrO 3 ), calcium silicate (CaO ⁇ SiO 2 ), and graphite (C) and a binder. have.
  • CaO is eluted by the following reaction and CaO is reacted with alumina to inhibit inclusions.
  • CaO and TiO 2 are separated from the raretite, CaO and ZrO 2 are separated from the calcium zirconate, and then CaO and alumina react to form 12CaO.7Al 2 O 3 , thereby forming inclusions on the inner wall of the immersion nozzle 500. Will be suppressed.
  • the rare titanium is lower in activation energy than the calcium zirconate and the rare titanium is separated into CaO and TiO 2 before the calcium zirconate is separated into CaO and ZrO 2 .
  • CaO is first separated from the rare titite before CaO is separated from calcium zirconate, the overall CaO content is increased, thereby improving the reactivity of CaO and alumina, thereby further suppressing adhesion of inclusions. can do.
  • TiO 2 and ZrO 2 serve to maintain the shape of the inner cavity 520.
  • ZrO 2 may be destabilized and cracks may be generated during casting.
  • ZrO 2 does not react with alumina, but TiO 2 may react with alumina to further suppress inclusion adhesion. That is, the reaction scheme described the main reaction of CaO and alumina, but TiO 2 also reacts with alumina.
  • the content of CaO can be increased without increasing the content of calcium zirconate, and the reactivity with alumina can be further improved by TiO 2 reacting with alumina, further suppressing adhesion of inclusions. can do.
  • TiO 2 does not use CaO as a stabilizer, generation of cracks or the like during casting can be prevented.
  • the internal vacancy part 520 is formed by mixing a rare titanium, calcium zirconate, calcium silicate, and graphite with a binder.
  • the internal vaccinating material including the rare titanium is mixed at 95 wt% to 99 wt%
  • the binder may be mixed at 1 wt% to 5 wt%. That is, with respect to 100 wt% of the mixture of the internal cavity material and the binder, the internal cavity material is mixed at 95wt% to 99wt%, and the binder is mixed at 1wt% to 5wt%.
  • Thermosetting resins such as a phenol resin, can be used as a binder.
  • the rare titanium and calcium zirconate in the mixture may be contained in 40wt% to 90wt%. That is, the rare-tarite and calcium zirconate may be contained in an amount of 40 wt% or more and 90 wt% or less with respect to 100 wt% of the mixture of the inner cavity material and the binder.
  • the rare titanium and calcium zirconate have a role of maintaining TiO 2 and ZrO 2 in the shape of the inner cavity 520 after CaO is eluted, it should be contained at least 40wt% to maintain the shape of the inner cavity 520. It should be contained below 90wt% for addition of other ingredients.
  • the rare titanium may be contained in 5% to 50% compared to calcium zirconate. That is, the rare titanium may be contained in an amount of 5 wt% to 50 wt% with respect to 100 wt% of the mixture of rare titanium and calcium zirconate.
  • the effect of the present invention is insignificant, and when it is mixed in excess of 50wt%, the reactivity is excessive and the life of the immersion nozzle 500 may be shortened. That is, when the excessive content of the rare titanium stones, the inner cavity 520 is quickly consumed due to the excessive reaction, and the life of the immersion nozzle 500 may be shortened accordingly.
  • graphite may be contained in 5wt% to 35wt% with respect to 100wt% of the mixture. Graphite should be added at least 5wt% for heat transfer to the outside of the immersion nozzle 500, and may be oxidized when excessively added in excess of 35wt%.
  • the calcium silicate is composed of CaO.SiO 2 + 2CaO.SiO 2 and may be contained in an amount of 1 wt% to 25 wt% with respect to 100 wt% of the mixture.
  • the amount of calcium silicate may vary depending on the amount of rare titanium, but in order to induce a reaction with alumina, the amount of calcium silicate must be contained in an amount of 1 wt% or more, and when added in excess of 25 wt%, the life of the immersion nozzle 500 is excessive. Can be shortened.
  • the discharge port 540 may also be provided with the same material as the internal hole 520. That is, it can be formed using a mixture of rare titanium, calcium zirconate, calcium silicate and graphite (C) and a binder. However, the discharge port 540 may be formed to a content lower than the content of the mixture of the internal cavity 520 to form a total CaO content less than the total CaO content of the internal cavity 520. That is, the CaO content of the rare titanium, calcium zirconate, calcium silicate, and graphite may be formed in the inner cavities 520 of 15wt% to 35wt%, and the discharge holes 540 may be formed of 10wt% to 25wt%.
  • the inner cavity 520 and the discharge port 540 is preferably manufactured so that the porosity is 15% to 35%. If the porosity of the inner cavity 520 and the discharge port 540 is dense to less than 15%, cracks may occur during casting, and if it exceeds 35%, the strength may decrease.
  • An immersion nozzle 500 is three in studying diluent titanium 520 formed on the inner wall of the nozzle body (510) (CaTiO 3), calcium zirconate (CaZrO 3) in accordance with one embodiment of the present invention as described above, It is formed of a material containing calcium silicate (CaO.SiO 2 ) and graphite (C).
  • the inclusion of rare titanium can increase the content of CaO without increasing the content of calcium zirconate, improve the reactivity with alumina by reacting TiO 2 with alumina, and further suppress the adhesion of inclusions. Heavy cracking can be prevented.
  • FIG. 3 is an image after the alumina adhesion reaction test according to the material of the sample, the image after the alumina adhesion reaction test for Al 2 O 3 -C, CaZrO 3 and CaTiO 3 . That is, FIG. 3 (a) is an image of the Al 2 O 3 -C substrate, Figure 3 (b) is an image of CaZrO 3 substrate, and Fig. 3 (c) is the image of the CaTiO 3 substrate. As shown, it can be seen that the inclusion adhesion level is the lowest in Al 2 O 3 -C and the highest in order of CaZrO 3 and CaTiO 3 .
  • FIGS. 4 to 7 are mixed with CaTiO 3 and CaZrO 3 in a ratio of 0: 100, 30:70, 50:50, and 70:30 on an alumina substrate, and then maintained at 1550 ° C. for 3 hours to observe reactivity. to be.
  • FIGS. 4 to 7 (a) show the reactivity of Al
  • FIGS. 4 to 7 (b) show the reactivity of Ca.
  • FIGS. 4 to 7 it can be seen that all of Ca in the sample is diffused into the alumina substrate.
  • CaTiO 3 and CaZrO 3 are mixed in a ratio of 30:70, the sample remains intact.
  • the content of CaTiO 3 is preferably added in not more than 50% compared to CaZrO 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Composite Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Continuous Casting (AREA)
PCT/KR2015/008949 2014-10-31 2015-08-26 연속주조용 침지노즐 WO2016068469A1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580058580.2A CN107073565B (zh) 2014-10-31 2015-08-26 连续铸造用浸渍喷嘴
JP2017521580A JP6419331B2 (ja) 2014-10-31 2015-08-26 連続鋳造用浸漬ノズル

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0150365 2014-10-31
KR1020140150365A KR101597254B1 (ko) 2014-10-31 2014-10-31 연속주조용 침지노즐

Publications (1)

Publication Number Publication Date
WO2016068469A1 true WO2016068469A1 (ko) 2016-05-06

Family

ID=55449902

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2015/008949 WO2016068469A1 (ko) 2014-10-31 2015-08-26 연속주조용 침지노즐

Country Status (4)

Country Link
JP (1) JP6419331B2 (ja)
KR (1) KR101597254B1 (ja)
CN (1) CN107073565B (ja)
WO (1) WO2016068469A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170119917A (ko) * 2016-04-20 2017-10-30 주식회사 포스코 노즐
KR101839839B1 (ko) 2018-01-11 2018-03-19 주식회사 포스코 노즐

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07102436B2 (ja) * 1991-06-18 1995-11-08 黒崎窯業株式会社 カルシウムジルコネート含有連続鋳造用ノズル
JPH11188463A (ja) * 1997-12-25 1999-07-13 Kurosaki Refract Co Ltd 連続鋳造用浸漬ノズル
JP2002205149A (ja) * 2000-12-28 2002-07-23 Nkk Corp 鋼の連続鋳造用浸漬ノズル
JP2007130653A (ja) * 2005-11-09 2007-05-31 Nippon Steel Corp 連続鋳造用の浸漬ノズル
KR20090076011A (ko) * 2008-01-07 2009-07-13 조선내화 주식회사 연속주조용 침지노즐의 내화물

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6440154A (en) * 1987-08-07 1989-02-10 Akechi Ceramics Kk Nozzle for continuous casting
JPH02207951A (ja) * 1989-02-07 1990-08-17 Akechi Ceramics Kk 連続鋳造用ノズルの製造方法
JPH0437450A (ja) * 1990-05-31 1992-02-07 Nippon Steel Corp 広幅薄肉スラブ鋳造用ノズル
JP2919753B2 (ja) * 1994-10-17 1999-07-19 品川白煉瓦株式会社 カルシア−チタニア系耐火材料
JP2941186B2 (ja) * 1994-12-13 1999-08-25 品川白煉瓦株式会社 カルシア−チタニア−ジルコニア系耐火材料
JP4874431B2 (ja) * 2009-03-25 2012-02-15 新日本製鐵株式会社 連続鋳造用浸漬ノズル
CN102416451B (zh) * 2011-12-12 2013-07-10 辽宁科技大学 一种防堵塞中间包上水口及其制造方法
CN103626498B (zh) * 2013-12-13 2015-07-08 山东鹏程陶瓷新材料科技有限公司 氮化硼基陶瓷喷嘴及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07102436B2 (ja) * 1991-06-18 1995-11-08 黒崎窯業株式会社 カルシウムジルコネート含有連続鋳造用ノズル
JPH11188463A (ja) * 1997-12-25 1999-07-13 Kurosaki Refract Co Ltd 連続鋳造用浸漬ノズル
JP2002205149A (ja) * 2000-12-28 2002-07-23 Nkk Corp 鋼の連続鋳造用浸漬ノズル
JP2007130653A (ja) * 2005-11-09 2007-05-31 Nippon Steel Corp 連続鋳造用の浸漬ノズル
KR20090076011A (ko) * 2008-01-07 2009-07-13 조선내화 주식회사 연속주조용 침지노즐의 내화물

Also Published As

Publication number Publication date
JP6419331B2 (ja) 2018-11-07
KR101597254B1 (ko) 2016-02-24
CN107073565B (zh) 2019-05-10
CN107073565A (zh) 2017-08-18
JP2018501109A (ja) 2018-01-18

Similar Documents

Publication Publication Date Title
WO2016068469A1 (ko) 연속주조용 침지노즐
KR100916145B1 (ko) 연속주조용 침지노즐의 내화물
JPH07214259A (ja) 溶鋼の連続鋳造用ノズル
JPH05200508A (ja) 溶鋼の連続鋳造用ノズル
CN107303603B (zh) 水口
EP0588218B1 (en) Molten steel pouring nozzle
KR101639754B1 (ko) 연속주조용 침지노즐, 이를 이용한 연속주조방법 및 침지노즐 제조방법
JPWO2004082868A1 (ja) 連続鋳造ノズル
EP1504831A1 (en) Nozzle for continuous casting of aluminum killed steel and continuous casting method
KR101658182B1 (ko) 노즐
US20200282457A1 (en) Continuous casting nozzle
WO2019098611A1 (ko) 침지노즐 및 용강 처리방법
KR100303871B1 (ko) 내화벽돌및내화벽돌의탄소산화방지법
KR101839839B1 (ko) 노즐
JP2004074242A (ja) 連続鋳造用耐火物およびそれを用いる連続鋳造方法
GB2056430A (en) Immersion Nozzle for Continuous Casting of Molten Steel
KR101949700B1 (ko) 내화조성물 및 이를 포함하는 주조용 턴디쉬
JP2001113345A (ja) 鋼の連続鋳造方法
JP2011206781A (ja) 連続鋳造用ノズル
Biswas et al. Refractory for Casting
WO2018074659A1 (ko) 노즐 및 이의 제조 방법
JPH09142946A (ja) 不定形流し込み耐火物及びその成形体
KR20240010490A (ko) 강의 연속 주조 방법
KR20100076113A (ko) 다공성 내화물 및 이를 이용한 철강 제조로
JP2000024761A (ja) 連続鋳造用ノズル

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15855330

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017521580

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15855330

Country of ref document: EP

Kind code of ref document: A1