KR20020000910A - Submerged entry nozzle - Google Patents
Submerged entry nozzle Download PDFInfo
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- KR20020000910A KR20020000910A KR1020000034152A KR20000034152A KR20020000910A KR 20020000910 A KR20020000910 A KR 20020000910A KR 1020000034152 A KR1020000034152 A KR 1020000034152A KR 20000034152 A KR20000034152 A KR 20000034152A KR 20020000910 A KR20020000910 A KR 20020000910A
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- South Korea
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- molten steel
- immersion nozzle
- induction
- mold
- tundish
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
본 발명은 연속주조기에서 턴디쉬내의 용강을 몰드로 공급할때에 사용되는 침지노즐에 관한 것으로서, 그 목적은 턴디쉬내의 용강을 턴디쉬로부터 몰드로 원할하게 공급함은 물론, 그 공급되는 용강을 효과적으로 교반시켜 용강내의 불순물을 용강 상부로 부상분리시켜 고 청정강을 생산할 수 있도록 함에 있다.The present invention relates to an immersion nozzle used when supplying molten steel in a tundish to a mold in a continuous casting machine, and an object thereof is to smoothly supply molten steel in a tundish from a tundish to a mold, and to stir the supplied molten steel effectively. This is to separate the impurities in the molten steel to the upper part of the molten steel to produce high clean steel.
상기 목적을 달성하기 위한 본 발명의 구성은 통형의 몸체 내부 중앙에는 길이방향을 따라 유로가 형성되고 그 유로의 끝단부에는 용강유도부가 형성되며 상기 용강유도부의 양측에는 토출구를 상향하도록 형성시켜서서 된 침지노즐에 있어서,The configuration of the present invention for achieving the above object is formed by forming a flow path along the longitudinal direction in the inner center of the cylindrical body, the molten steel induction portion is formed at the end of the flow path and the discharge port is upward on both sides of the molten steel induction portion In the immersion nozzle,
상기 용강유도부에는 중앙에 용강마찰부가 형성되고 그 용강마찰부의 양측단부에 용강가이드가 형성된 용강유도판이 마련되며 상기 용강유도판의 하부에는 중앙에 몸체의 하단부와 연통되는 용강흡입로가 형성되고 그 용강흡입로 상부 양측으로는 용강배출로가 형성된 용강역류구를 마련하여서 된 것이다.The molten steel induction part is provided with a molten steel friction part in the center and a molten steel guide plate having molten steel guides formed at both ends of the molten steel friction part. A molten steel suction path is formed at the lower part of the molten steel induction plate in communication with the lower end of the body. The upper side of the suction passage was provided with a molten steel counter-flow port formed with a molten steel discharge passage.
Description
본 발명은 연속주조기에서 턴디쉬내의 용강을 몰드로 공급할때에 사용되는 침지노즐에 관한 것으로서, 더욱 상세하게는 턴디쉬내의 용강을 턴디쉬로부터 몰드로 원할하게 공급함은 물론, 그 공급되는 용강을 효과적으로 교반시켜 용강내의 불순물을 용강 상부로 부상분리시켜 고 청정강을 생산할 수 있도록 한 것이다.The present invention relates to an immersion nozzle used when supplying molten steel in a tundish to a mold in a continuous casting machine. More particularly, the molten steel in the tundish is smoothly supplied from the tundish to the mold, and the molten steel is effectively supplied. By stirring, the impurities in the molten steel are floated to the upper part of the molten steel to produce high clean steel.
일반적으로 침지노즐은 도 1에 나타낸 바와 같이 연속주조기인 턴디쉬(20)의 하단부에 설치되어 몰드(40)로 용강을 공급하는 역할을 하는 것으로서, 이는 도 2a 및 도 2b에 나타낸 바와 같이 내화재로 된 몸체(31)의 내부 중앙에 유로(32)가 형성되고 그 유로(32)의 끝단부에는 용강유도부(33)가 형성되며 상기 용강유도부(33)의 양측으로는 토출구(34)가 형성되어 있고 그 토출구(34)는 용강유도부(33)로부터 상부로 소정의 경사각을 갖도록 형성되어 있다.Generally, the immersion nozzle is installed at the lower end of the tundish 20, which is a continuous casting machine, to supply molten steel to the mold 40, as shown in FIGS. 2A and 2B. A flow path 32 is formed at the inner center of the body 31, and a molten steel induction part 33 is formed at an end of the flow path 32, and discharge holes 34 are formed at both sides of the molten steel induction part 33. The discharge port 34 is formed to have a predetermined inclination angle upward from the molten steel induction portion 33.
이와 같이 형성된 상기 침지노즐은 래들(10)로부터 턴디쉬(20)로 공급된 용강이 내화재로 된 몸체(31)의 유로(32)를 따라 하부로 진행하다가 용강유도부(33)의 중앙부와 부딪치면서 양측에 상향하도록 형성된 토출구(34)를 통하여 몰드(40)로 공급된다.The immersion nozzle formed as described above proceeds downward along the flow path 32 of the body 31 of the refractory material supplied from the ladle 10 to the tundish 20 while hitting the center portion of the molten steel induction part 33. It is supplied to the mold 40 through the discharge port 34 formed to be upward on both sides.
상기와 같이 토출구(34)를 통하여 몰드(40)로 공급되는 용강은 토출구(34)의 방향이 상향하도록 형성되어 있기 때문에 그 토출구(34)의 방향을 따라 용강은 몰드(40)의 상부 슬래그(50)층으로 올라가게 되고 그 올라간 용강은 슬래그(50)와 함께 용강이 교반되어 몰드(40)내의 용강속에 불순물을 더욱 함유시키게 된다.Since the molten steel supplied to the mold 40 through the discharge hole 34 is formed so that the direction of the discharge hole 34 is upward, the molten steel along the direction of the discharge hole 34 is the upper slag of the mold 40 ( The molten steel with the slag 50 is stirred up to the 50) layer to further contain impurities in the molten steel in the mold 40.
따라서 상기 슬래그(50)와 함께 교반되는 몰드(40)내의 용강은 슬래그(50) 즉 불순물이 더욱 함유되게 되고 따라서 생산되는 주편에는 불순물이 함유된 상태임으로 주편 품질을 악화시키는 결정적인 문제점으로 대두되었다.Therefore, the molten steel in the mold 40 which is stirred together with the slag 50 becomes a critical problem that deteriorates the slab quality because the slag 50, that is, impurities are further contained and thus the impurities are contained.
또한 상기 침지노즐의 토출구(34) 직하부 부분에 위치한 용강들은 정체해 있게되고 따라서 상기 교반되는 용강과 정체해 있는 용강과는 용강성분의 불균일이 발생하게 되어 주편의 품질편차가 발생하는 문제점이 발생하였다.In addition, the molten steel located directly below the discharge hole 34 of the immersion nozzle is stagnant, and thus, a difference in quality of the cast steel occurs due to non-uniformity of molten steel components between the stirred molten steel and the stagnant molten steel. It was.
본 발명은 상기와 같은 문제점을 해소하고자 발명한 것으로서, 그 목적은 턴디쉬내의 용강을 몰드로 공급해주는 침지노즐의 용강유도부에 용강마찰부가 형성되고 그 용강마찰부의 양측에 용강가이드가 형성된 용강유도판을 마련하며, 상기 용강유도판의 하부에는 중앙에 몸체의 하단부와 연통되는 용강흡입로가 형성되고 그 용강흡입로의 상부 양측으로는 용강배출로가 형성된 용강역류구를 마련하여 상기 턴디쉬의 용강이 몰드로 공급될 때에 그 몰드내의 용강을 교반시킴으로 상기 용강내에 존재하는 각종 불순물을 용강상부로 부상 분리시키도록 한 침지노즐을 제공함에 있다.The present invention has been invented to solve the above problems, the object of the molten steel guide plate is formed in the molten steel guide portion of the immersion nozzle for supplying the molten steel in the tundish mold, the molten steel guide plate formed on both sides of the molten steel friction portion And a molten steel suction path formed at a lower portion of the molten steel induction plate in communication with a lower end of the body, and a molten steel backflow port having a molten steel discharge path formed at both upper sides of the molten steel suction path to form the molten steel of the tundish. An immersion nozzle is provided to stir and separate the various impurities present in the molten steel to the upper portion of the molten steel by stirring the molten steel in the mold when supplied to the mold.
도 1은 연속주조기에 용강 교반용 침지노즐이 적용된 상태의 개략도1 is a schematic diagram of a state in which a immersion nozzle for stirring molten steel is applied to a continuous casting machine
도 2a 및 도 2b는 종래의 용강 교반용 침지노즐 사시도 및 단면도Figure 2a and 2b is a perspective view and a cross-sectional view of a conventional molten steel immersion nozzle
도 3a 및 도 3b는 본 발명의 용강 교반용 침지노즐 사시도 및 단면도3a and 3b is a perspective view and a cross-sectional view of the immersion nozzle for stirring molten steel of the present invention
도 4는 본 발명의 용강 교반용 침지노즐의 실시예를 나타낸 상태도.Figure 4 is a state diagram showing an embodiment of the immersion nozzle for stirring molten steel of the present invention.
<도면의 주요부분에 대한 부호><Symbols of main parts of drawing>
30 : 침지노즐 31 : 몸체30: immersion nozzle 31: body
32 : 유로 33 : 용강유도부32: Euro 33: molten steel induction part
34 : 토출구 35 : 용강유도판34 discharge port 35 molten steel induction plate
35a : 용강마찰부 35b : 용강가이드35a: molten steel friction part 35b: molten steel guide
36 : 용강역류구 36a : 용강흡입로36: molten steel reflux zone 36a: molten steel suction passage
36b : 용강배출로36b: molten steel discharge furnace
이와 같은 목적을 달성하기 위한 본 발명의 침지노즐에 대한 특징적인 기술적 구성을 설명하면 다음과 같다.The technical configuration of the immersion nozzle of the present invention for achieving the above object is as follows.
본 발명은 내화재로 된 통형의 몸체 내부 중앙에 길이방향을 따라 유로가 형성되고 그 유로의 끝단부에는 용강유도부가 형성되며 상기 용강유도부의 양측에는 토출구를 상향하도록 형성시켜서서 된 침지노즐에 있어서,The present invention is an immersion nozzle formed by forming a flow path along the longitudinal direction in the inner center of the cylindrical body of the refractory material, the molten steel induction portion is formed at the end of the flow path and the discharge port is upwardly formed on both sides of the molten steel induction portion,
상기 용강유도부에는 중앙에 용강마찰부가 형성되고 그 용강마찰부의 양측단부에는 용강가이드가 형성된 용강유도판이 마련되며 상기 용강유도판의 하부에는 중앙에 몸체의 하단부와 연통되는 용강흡입로가 형성되고 그 용강흡입로 상부 양측에는 용강배출로가 형성된 용강역류구가 마련된 것을 특징으로 한다.The molten steel induction part is provided with a molten steel friction part in the center, and molten steel induction plate is formed at both ends of the molten steel friction part, and a molten steel suction path is formed in the lower part of the molten steel induction plate communicating with the lower end of the body. The upper side of the suction passage is characterized in that the molten steel backflow port is formed with a molten steel discharge passage.
이와 같은 특징을 갖는 본 발명의 침지노즐을 첨부도면을 참조하여 상세하게 설명하면 다음과 같다.The immersion nozzle of the present invention having such a feature will be described in detail with reference to the accompanying drawings.
도 3a 및 도 3b는 본 발명의 용강 교반용 침지노즐 사시도 및 단면도이고, 도 4는 본 발명의 용강 교반용 침지노즐의 실시예를 나타낸 상태도로써,3A and 3B are a perspective view and a cross-sectional view of the molten steel stirring immersion nozzle of the present invention, Figure 4 is a state diagram showing an embodiment of the molten steel stirring immersion nozzle of the present invention,
본 발명의 침지노즐(30)은 도 1에 나타낸 바와 같이 연속주조기(이하 연주기라 칭함)인 래들(10)의 하부에 마련된 턴디쉬(20)의 하단부 중앙에 설치되어 상기 턴디쉬(20)내의 용강을 몰드(40)로 공급해주는 것으로써, 이는 도 3a 및 도 3b에 나타낸 바와 같이 통형의 몸체(31)가 용강에 견딜 수 있는 내화재로 되어 있고 그 내화재로 된 통형의 몸체(31) 내부 중앙에는 턴디쉬(20)내의 용강이 몰드(40)로 공급되는 유로(32)가 형성되어 있다.The immersion nozzle 30 of the present invention is installed in the center of the lower end of the tundish 20 provided in the lower portion of the ladle 10, which is a continuous casting machine (hereinafter referred to as a player), as shown in FIG. By supplying molten steel to the mold 40, which is a cylindrical body 31 is a refractory material that can withstand molten steel as shown in Figs. 3a and 3b, the inner center of the cylindrical body 31 of the refractory material The flow path 32 through which the molten steel in the tundish 20 is supplied to the mold 40 is formed.
또한 상기 몸체(31)의 하부 유로(32)가 끝나는 지점에는 용강유도부(33)가 마련되고 그 용강유도부(33)의 양측에는 용강을 몰드(40)로 토출시키는 토출구(34)가 상향하도록 형성되어 있으며, 상기 용강유도부(33)에는 유로(32)를 통하여 유입되는 용강이 부딪치는 용강마찰부(35a)가 평면 형태로 형성되어 있고 그 평면 형태로 형성된 용강마찰부(35a)의 양측에는 토출구(34)의 방향을 따라 용강가이드(35b)가 형성된 용강유도판(35)이 마련되어 있다.In addition, the molten steel induction part 33 is provided at the point where the lower flow path 32 of the body 31 ends, and the ejection opening 34 for discharging molten steel to the mold 40 is upwardly formed at both sides of the molten steel induction part 33. In the molten steel induction part 33, a molten steel friction part 35a to which molten steel introduced through the flow path 32 collides is formed in a flat shape, and discharge holes are provided at both sides of the molten steel friction part 35a formed in the flat shape. A molten steel guide plate 35 having a molten steel guide 35b formed along the direction of 34 is provided.
그리고 상기 용강유도판(35)의 하부에는 중앙에 몸체(31)의 하단부와 연통되는 용강흡입로(36a)가 수직으로 형성되고 그 용강흡입로(36a)의 상부 양측으로는 용강배출로(36b)가 용강가이드(35b)의 하면을 따라 형성되어 있다.And the lower part of the molten steel induction plate 35 is formed in the center of the molten steel suction passage (36a) in communication with the lower end of the body 31 in the vertical and the molten steel discharge passage (36b) on both sides of the upper portion of the molten steel suction passage (36a) Is formed along the lower surface of the molten steel guide 35b.
이와 같이 구성된 본 발명의 침지노즐에 대한 실시예를 도 4를 참조하여 설명하면 다음과 같다.An embodiment of the immersion nozzle of the present invention configured as described above will be described with reference to FIG. 4.
본 발명은 턴디쉬(20)에 수용되어 있는 용강이 침지노즐(30)의 몸체(31) 중앙에 형성된 유로(32)를 통하여 하부로 진행하다가 상기 몸체(31)의 하부 유로(32)가 끝단부분의 용강유도부(33)에 마련된 용강마찰부(35a)에 용강이 부딪치면서 용강가이드(35b)의 안내를 받으며 토출구(34)로 토출되어 몰드(40)에 용강이 공급된다.The present invention proceeds downward through the flow path 32 formed in the center of the body 31 of the immersion nozzle 30, the molten steel accommodated in the tundish 20 end of the lower flow path 32 of the body 31 The molten steel collides with the molten steel friction part 35a provided in the molten steel induction part 33 and is guided by the molten steel guide 35b and discharged to the ejection opening 34 to supply molten steel to the mold 40.
이때 상기 토출구(34)로 토출되는 용강은 그 토출되는 용강의 압에 의해 상기 용강가이드(35b)의 하부에 형성된 용강역류구(36)인 용강배출로(36b)에 흡입력을 발생시키고 그 용강배출로(36b)의 흡입력은 상기 용강배출로(36b)와 연통되게 마련된 용강흡입로(36a)로 전달되어 상기 침지노즐(30)의 몸체(31)하부 주위에 정체되어 있는 용강을 상기 용강흡입로(36a)로 흡입하면서 용강배출로(36b)로 용강을 배출시킨다.At this time, the molten steel discharged to the discharge port 34 generates a suction force in the molten steel discharge passage 36b, which is the molten steel backflow port 36 formed at the lower portion of the molten steel guide 35b by the pressure of the discharged molten steel, and discharges the molten steel. The suction force of the furnace (36b) is transmitted to the molten steel suction path (36a) provided in communication with the molten steel discharge path (36b) to the molten steel stagnated around the lower portion of the body 31 of the immersion nozzle (30) to the molten steel suction path The molten steel is discharged to the molten steel discharge path 36b while being sucked to 36a.
따라서 상기 토출구(34)에서는 턴디쉬(20)내의 용강이 계속적으로 배출되고 또 용강배출로(36b)에서는 상기 토출구(34)의 직하부 즉 침지노즐(30)의 몸체(31) 하부 주위에 정체되어 있는 용강을 지속적으로 흡입하여 배출하기 때문에 상기 몰드(40)에 공급되는 용강은 전체적으로 교반이 일어나게 되는 것이다.Therefore, the molten steel in the tundish 20 is continuously discharged from the discharge hole 34 and stagnated around the lower portion of the body 31 of the immersion nozzle 30 directly below the discharge hole 34 in the molten steel discharge path 36b. Since the molten steel is continuously sucked and discharged, the molten steel supplied to the mold 40 is agitated as a whole.
그러므로 상기 몰드(40)내로 공급되는 용강은 교반이 골고루 일어나기 때문에 그 용강내에 존재하고 있는 불순물들이 모두 용강 상부로 부상하게 되고 그 부상하게 된 불순물은 슬라그(50)층을 형성하게 되어 그 슬라그(50)층만 재거하게 되면 용강은 불순물이 없는 청정강만 남게되에 양질의 주편을 생산할 수 있게 되는 장점이 있다.Therefore, since the stirring of the molten steel supplied into the mold 40 takes place evenly, all the impurities present in the molten steel rise to the upper part of the molten steel, and the impurity that floats forms the slag 50 layer. If only 50 layers are removed, the molten steel has only the clean steel free of impurities, and thus can produce high quality cast steel.
단 상기 용강유도부(33)에 마련된 용강유도판(35)의 폭(P)은 침지노즐(30)의 몸체(31) 직경(M) 보다는 작게 마련되고 상기 용강유도판(35)의 폭(P)은 유로(32)의 직경(N)보다는 크게 형성되는데 그 이유는 다음과 같다.However, the width P of the molten steel induction plate 35 provided in the molten steel induction part 33 is smaller than the diameter M of the body 31 of the immersion nozzle 30 and the width P of the molten steel induction plate 35. ) Is formed larger than the diameter (N) of the flow path 32 because of the following.
전자의 경우는 상기 용강유도판(35)의 폭(P)이 침지노즐(30)의 몸체(31) 직경(M) 보다 크게되면 상기 용강유도판(35)의 양측에 형성된 용강가이드(35b)가 토출구(34)의 외부로 돌출되는 형태가 됨으로 용강이 토출구(34)로 토출되면서 발생하는 용강배출로(36b)의 흡입력을 발생시키지 못하여 침지노즐(30)의 몸체(31) 하부 주위에 정체되어 있는 용강을 교반시키지 못하는 문제점이 있다.In the former case, when the width P of the molten steel guide plate 35 is larger than the diameter M of the body 31 of the immersion nozzle 30, the molten steel guide 35b formed on both sides of the molten steel guide plate 35. Is formed to protrude to the outside of the discharge port 34, the molten steel does not generate the suction force of the molten steel discharge path 36b generated as it is discharged to the discharge port 34, stagnated around the lower body 31 of the immersion nozzle 30 There is a problem that can not stir the molten steel.
또 상기 용강유도판(35)의 폭(P)이 침지노즐(30)의 몸체(31) 유로(32)의 직경(M) 보다 작게되면 상기 유로(32)를 통하여 공급되는 용강의 일부가 용강역류구(36)인 용강배출로(36b)를 통하여 용강흡입로(36a)로 유입되 들어가기 때문에 그 용강흡입로(36a)로의 용강흡입을 저해하는 요인이 발생한다.When the width P of the molten steel induction plate 35 is smaller than the diameter M of the body 31 flow path 32 of the immersion nozzle 30, a part of the molten steel supplied through the flow path 32 is molten steel. Since the molten steel suction path 36a, which flows back into the molten steel discharge path 36b, enters into the molten steel suction path 36a, a factor of inhibiting the molten steel suction into the molten steel suction path 36a occurs.
이상과 같은 작용을 하는 본 발명의 침지노즐은 턴디쉬의 용강이 몰드로 공급되면서 그 몰드내의 용강을 교반시킴으로 상기 용강내에 존재하는 각종 불순물이 용강상부로 부상 분리되어 연주기에서 생산되는 강의 품질을 향상시킬 수 있는 장점이 있다.The immersion nozzle of the present invention having the above-described function stirs the molten steel in the mold while the molten steel of the tundish is supplied to the mold to improve the quality of the steel produced in the machine by separating and separating various impurities present in the molten steel into the upper portion of the molten steel. There is an advantage to this.
이상과 같은 본 발명의 침지노즐은 유로의 끝단부에 형성된 용강유도부에 중앙부는 용강마찰부가 평면 형태로 형성되고 그 평면 형태로 형성된 용강마찰부의 양측에는 용강가이드가 형성된 용강유도판을 마련하며, 상기 용강유도판의 하부에는 중앙에 몸체의 하단부와 연통되는 용강흡입로가 수직으로 형성되고 그 용강흡입로의 상부 양측으로는 용강배출로가 형성된 용강역류구를 마련함으로써, 턴디쉬의 용강이 침지노즐을 통하여 몰드로 공급될 때에 그 몰드내의 용강을 교반시킴으로 상기 용강내에 존재하는 각종 불순물을 용강상부로 부상 분리시켜 주어 양질의 청정강을 제조할 수 있는 특유의 효과가 있다.The immersion nozzle of the present invention as described above provides a molten steel induction plate having a molten steel guide formed on both sides of the molten steel friction portion formed in a flat form at the center portion of the molten steel induction portion formed at the end of the flow path and formed in the flat form. In the lower part of the molten steel guide plate, a molten steel suction path communicating with the lower end of the body is formed vertically, and a molten steel backflow port having a molten steel discharge path formed on both upper sides of the molten steel suction path, whereby the molten steel of the tundish is immersed in the nozzle. When the molten steel in the mold is agitated when supplied to the mold, various impurities present in the molten steel are separated from the molten steel to the upper portion of the molten steel to produce a clean steel of high quality.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0034152A KR100488988B1 (en) | 2000-06-21 | 2000-06-21 | Submerged entry nozzle |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2000-0034152A KR100488988B1 (en) | 2000-06-21 | 2000-06-21 | Submerged entry nozzle |
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| KR20020000910A true KR20020000910A (en) | 2002-01-09 |
| KR100488988B1 KR100488988B1 (en) | 2005-05-11 |
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| KR10-2000-0034152A Expired - Fee Related KR100488988B1 (en) | 2000-06-21 | 2000-06-21 | Submerged entry nozzle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2815820A1 (en) * | 2013-06-20 | 2014-12-24 | Refractory Intellectual Property GmbH & Co. KG | Refractory submerged entry nozzle |
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| JPS6272753U (en) * | 1985-10-22 | 1987-05-09 | ||
| DE3623660A1 (en) * | 1986-07-12 | 1988-01-14 | Thyssen Stahl Ag | FIREPROOF PIPE |
| KR19990012672U (en) * | 1997-09-11 | 1999-04-15 | 이구택 | Immersion nozzle for continuous casting with upward discharge port |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2815820A1 (en) * | 2013-06-20 | 2014-12-24 | Refractory Intellectual Property GmbH & Co. KG | Refractory submerged entry nozzle |
| WO2014202257A3 (en) * | 2013-06-20 | 2015-03-19 | Refractory Intellectual Property Gmbh & Co. Kg | Refractory submerged entry nozzle |
| CN105163883A (en) * | 2013-06-20 | 2015-12-16 | 里弗雷克特里知识产权两合公司 | Refractory submerged entry nozzle |
| CN105163883B (en) * | 2013-06-20 | 2017-04-05 | 里弗雷克特里知识产权两合公司 | Fire resisting immersion entry nozzle |
| US9815113B2 (en) | 2013-06-20 | 2017-11-14 | Refractory Intellectual Property Gmbh & Co. Kg | Refractory submerged entry nozzle |
| RU2636213C2 (en) * | 2013-06-20 | 2017-11-21 | Рифрэктори Интеллектчуал Проперти Гмбх Унд Ко. Кг | Refractory immersion nozzle |
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