KR20020052614A - Device for uniformly supplying the inert gas of upper nozzle - Google Patents

Device for uniformly supplying the inert gas of upper nozzle Download PDF

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Publication number
KR20020052614A
KR20020052614A KR1020000082012A KR20000082012A KR20020052614A KR 20020052614 A KR20020052614 A KR 20020052614A KR 1020000082012 A KR1020000082012 A KR 1020000082012A KR 20000082012 A KR20000082012 A KR 20000082012A KR 20020052614 A KR20020052614 A KR 20020052614A
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South Korea
Prior art keywords
upper nozzle
inert gas
nozzle
molten steel
wall
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KR1020000082012A
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Korean (ko)
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이중의
박영선
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이구택
주식회사 포스코
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Priority to KR1020000082012A priority Critical patent/KR20020052614A/en
Publication of KR20020052614A publication Critical patent/KR20020052614A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10Supplying or treating molten metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14Closures
    • B22D41/22Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50Pouring-nozzles
    • B22D41/58Pouring-nozzles with gas injecting means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

PURPOSE: A device for uniformly supplying an inert gas of the upper nozzle for a continuous caster is provided to constantly maintain supply pressure of argon gas and reduce various costs according to manufacturing of the upper nozzle by forming a gas channel in a space between the upper nozzle and metal case. CONSTITUTION: In a device for uniformly supplying an inert gas of the upper nozzle for a continuous caster which is mounted on the bottom surface of a tundish so as to simultaneously cut off air and discharge molten steel in the tundish into a mold through a lower nozzle during operation of upper and lower sliding gates, the device comprises an inner wall body(10) on the body central part of which an up and down discharge hole(11) that is a discharge pipe line for molten steel is formed, and the body of which is formed of a porous material(12) as a whole so that the inner wall body(10) forms an outer pipe of the device; and a case(30) which is mounted on the surrounding surface of the inner wall body(10) so that the case(30) supports the inner wall body(10), and on the inner wall of which a plurality of cohesion protrusions(31) are uniformly mounted, wherein a porous material(12) is surface contacted with the cohesion protrusions(31) so that the cohesion protrusions(31) form a passing space(33) of the inert gas.

Description

연속주조기용 상부노즐의 불활성가스 균일 공급 장치 {Device for uniformly supplying the inert gas of upper nozzle}Device for uniformly supplying the inert gas of upper nozzle

본 발명은 턴디쉬내의 용강을 주형으로 공급하는 과정에서 공급관로로 이용되는 상부노즐에 관한 것으로, 특히 상부노즐과 철피의 사이공간으로 유로를 형성하여 균일한 압력으로 아르곤가스를 공급시킬 수 있도록 된 연속주조기용 상부노즐의 불활성가스 균일 공급 장치에 관한 것이다.The present invention relates to an upper nozzle used as a supply pipe in the process of supplying molten steel in a tundish as a mold, and in particular, an argon gas can be supplied at a uniform pressure by forming a flow path between the upper nozzle and the steel shell. The present invention relates to a uniform inert gas supply device for an upper nozzle for a continuous casting machine.

일반적으로, 턴디쉬(tundish)는, 연속주조공정에서 용광로로부터 배출되어 래이들(ladle)을 통해 이송되어지는 용강을 몰드(mould)로 공급하여주는 용강의 수용용기로서, 이러한 턴디쉬의 몸체 하부측에 용강의 유량을 조절하여주는 한 개이상의 딜리버리장치가 장착되어 있다.In general, a tundish is a container for molten steel that supplies molten steel, which is discharged from the furnace in a continuous casting process and transferred through a ladle, to a mold. It is equipped with one or more delivery devices to adjust the flow rate of molten steel on the side.

즉, 도 1에서와 같이, 딜리버리장치(100)는, 턴디쉬(200)의 바닥면에 장착되어 공기를 차단하는 상부노즐(110)과, 상부노즐(110)의 배출공에 장착되어 용강의 배출량을 조절하는 상/하부슬라이딩게이트(120,130)와, 하부슬라이딩공(130)의 배출공에 장착되어 용강(M)의 배출경로로 이용되는 하부노즐(140)로 구성되어 있다.That is, as shown in FIG. 1, the delivery device 100 is mounted on the bottom surface of the tundish 200 to block air and the discharge hole of the upper nozzle 110. The upper and lower sliding gates 120 and 130 for controlling the discharge, and the lower nozzle 140 is mounted to the discharge hole of the lower sliding hole 130 is used as the discharge path of the molten steel (M).

따라서, 턴디쉬(200)내의 용강을 몰드로 장입하는 과정에서, 상부슬라이딩게이트(120)를 왕복이동하면서 용강의 배출량을 조절하게 되면, 턴디쉬(200)내의 용강이 상부노즐(110)과 하부노즐(140)을 통해 몰드로 주입되어 고형화된 상태에서 열간압연 공정으로 이송되는 것이다.Therefore, in the process of charging the molten steel in the tundish 200 into the mold, if the discharge of molten steel is controlled while reciprocating the upper sliding gate 120, the molten steel in the tundish 200 is the upper nozzle 110 and the lower portion. It is injected into the mold through the nozzle 140 and is transferred to the hot rolling process in a solidified state.

그러나, 턴디쉬(200)에서 배출되어 몰드로 주입되는 용강이 산소와의 반응에 의해 상부노즐(110)의 내벽을 따라 눌러 붙게 되는 경우, 상부노즐의 배출경로가 밀폐되므로, 상부노즐(110)을 통해 아르곤과 같은 불활성가스를 공급하여, 용강의 배출경로가 차단되는 것을 방지하게 되는 것이다.However, when the molten steel discharged from the tundish 200 and injected into the mold is pressed along the inner wall of the upper nozzle 110 by reaction with oxygen, the discharge path of the upper nozzle is sealed, so that the upper nozzle 110 By supplying an inert gas such as argon through, it is to prevent the discharge path of the molten steel is blocked.

한편, 상부노즐(110)의 막힘현상을 방지하기 위한 수단으로, 상부노즐의 일부 또는 전부를 다공물질(Porous material)로 형성함은 물론, 여기에 아르곤가스를 5∼10Nℓ/min의 속도로 취입하는 방법이 제안된 바 있다. 이때, 상부노즐(110)로 취입되어진 아르곤가스는 기포 또는 기포막을 형성시켜, 상부노즐의 내벽을 따라 흐르게 하거나 또는 기포가 비금속개재물을 포집하여 이동하게 하므로써 용강의 막힘현상을 차단하는 방법이다.Meanwhile, as a means for preventing clogging of the upper nozzle 110, a part or all of the upper nozzle is formed of a porous material, and argon gas is blown therein at a rate of 5 to 10 Nℓ / min. How to do this has been proposed. At this time, the argon gas blown into the upper nozzle 110 forms a bubble or a bubble film so as to flow along the inner wall of the upper nozzle or to collect and move the non-metallic inclusions to block the phenomenon of molten steel.

즉, 도 2a에서와 같이, 상부노즐(110)이, 철피(111)를 통해 둘러싸여진 상태에서 그 내벽을 따라 다공물질(112)가 부착되면서, 그 외벽에 가스도입관(113)이 장착되어 외관을 이루게 된다.That is, as shown in Figure 2a, while the upper nozzle 110 is attached to the porous material 112 along its inner wall in a state surrounded by the iron shell 111, the gas introduction pipe 113 is mounted on the outer wall The appearance is achieved.

그런데, 도 2a의 상부노즐(110)은, 다공물질(112)의 품질이 일정하지 않은 경우 아르곤가스를 균일하게 공급하지 못하게 됨은 물론 그 외벽을 따라 가스도입관(113)이 장착된 상태이므로, 상부노즐(110)의 하부측으로 가스가 집중되어 불균일한 가스취입이 이루어지는 문제점이 있었다.By the way, the upper nozzle 110 of Figure 2a, when the quality of the porous material 112 is not constant, it is not possible to uniformly supply argon gas, so the gas introduction pipe 113 is mounted along its outer wall, There was a problem that the gas is concentrated to the lower side of the upper nozzle 110, the non-uniform gas blowing.

또한, 도 2b와 도 2c에서와 같이, 상부노즐(110)의 일부분에 링형태의 다공물질(112)를 장착한 상태에서, 그 외벽을 따라 가스도입관(113)을 장착하는 방법이 제안된 바 있지만, 이러한 방법도 상부노즐의 하부측으로 가스가 집중되어 불균일한 가스취입이 이루어지는 문제점이 있었다.In addition, as shown in Figure 2b and 2c, in the state in which the ring-shaped porous material 112 is mounted on a portion of the upper nozzle 110, a method of mounting the gas introduction pipe 113 along the outer wall is proposed However, this method also has a problem in that the gas is concentrated to the lower side of the upper nozzle is a non-uniform gas blowing.

또한, 도 2d와 도 2에서와 같이, 상부노즐(110)의 전체를 다공물질(112)로 형성하면서, 그 내부공간을 이루는 상하홀(114)로 가스도입관(113)을 연결하는 방법이 제안된 바 있지만, 이러한 방법은 제조공정이 매우 복잡한 문제점이 있었다.In addition, as shown in Figure 2d and 2, while forming the entire upper nozzle 110 of the porous material 112, the method of connecting the gas introduction pipe 113 to the upper and lower holes 114 constituting the inner space 114 Although proposed, this method has a very complicated manufacturing process.

또한, 도 2f에서와 같이, 상부노즐(110)의 몸체전부분을 비다공물질(116)로 형성한 상태에서 그 내부공간에 상하홀(114)과 좌우홀(115)을 상호 연통되게 형성하고, 그 외벽에 가스도입관(113)을 연결하는 방법이 제안된 바 있지만, 이러한 방법은 제조공정이 복잡하여 제반 부대비용이 증대됨은 물론 조업조건에 따라 좌우홀의 크기를 조절해야하는 불편함이 있었다.In addition, as shown in FIG. 2F, the upper and lower holes 114 and the left and right holes 115 are formed to communicate with each other in the inner space in the state where the entire body of the upper nozzle 110 is formed of the non-porous material 116. Although, a method of connecting the gas introduction pipe 113 to the outer wall has been proposed, such a method has an inconvenience of having to adjust the size of the left and right holes according to the operating conditions, as well as an increase in all the additional costs due to the complicated manufacturing process.

또한, 도 2g와 도 2h에서와 같이, 상부노즐(110)의 일부는 다공물질(112)로 형성함과 더불어 일부는 비다공물질(116)로 형성하며, 그 내부공간에 상하홀(114)을 형성하고 가스도입관(113)을 연결하는 방법이 제안된 바 있지만, 이러한 방법도 역시 제조공정이 복잡한 문제점이 있었다.In addition, as shown in Figures 2g and 2h, a portion of the upper nozzle 110 is formed of a porous material 112, and a portion is formed of a non-porous material 116, the upper and lower holes 114 in the inner space Forming and connecting the gas introduction pipe 113 has been proposed, but this method also had a complicated manufacturing process problem.

또한, 도 2i에서와 같이, 상부노즐(110)을 비다공물질(116)로 형성한 상태에서 그 내부공간에 다수개의 상하홀(114)을 형성한 다음 그 외벽을 따라 가스도입관 (113)을 장착하는 방법이 제안된 바 있지만, 이러한 방법은 상부노즐의 상단부로 가스를 취입하는 장점이 있지만, 철정압에 의해 상부노즐로 균열이 발생되는 문제점이 있었다.In addition, as shown in FIG. 2I, in the state where the upper nozzle 110 is formed of the non-porous material 116, a plurality of upper and lower holes 114 are formed in the inner space thereof, and then the gas introduction pipe 113 is formed along the outer wall thereof. Although a method of mounting the bar has been proposed, this method has an advantage of blowing gas into the upper end of the upper nozzle, but there is a problem in that cracking occurs in the upper nozzle by the positive static pressure.

이에, 본 발명은 상기한 바와 같은 제문제점을 해결하기 위하여 안출된 것으로서, 상부노즐과 철피의 사이공간으로 가스유로를 형성하여 아르곤가스의 공급압력을 일정하게 유지시킴과 더불어 상부노즐의 제조에 따른 제반비용을 절감시킬 수 있도록 된 연속주조기용 상부노즐의 불활성가스 균일 공급 장치를 제공하는 데에 그 목적이 있다.Accordingly, the present invention has been made in order to solve the problems described above, by forming a gas flow path between the upper nozzle and the steel shell to maintain a constant supply pressure of argon gas and according to the manufacture of the upper nozzle An object of the present invention is to provide an inert gas uniform supply device for an upper nozzle for a continuous casting machine, which can reduce overall costs.

상기한 바의 목적을 달성하기 위한 본 발명은, 턴디쉬의 바닥면에 장착되어 공기를 차단하여줌과 더불어 상/하부슬라이딩게이트의 작동과정에서 턴디쉬내의 용강을 하부노즐을 통해 몰드로 배출하여주도록 된 연속주조기용 상부노즐의 불활성가스 균일 공급 장치를 구성함에 있어서, 중심부에 용강배출관로인 상하배출공이 형성됨과 더불어 그 몸체가 전체적으로 다공물질로 성형되어진 내벽체와; 내벽체의 둘레면을 따라 장착되어 지지함과 더불어 그 내주면에 다공물질로 면접촉되어 불활성가스의 통과공간을 이루는 밀착돌기가 균일하게 부착되어진 케이스로 이루어진 것을 특징으로 한다.In order to achieve the above object, the present invention is mounted on the bottom surface of the tundish to block air and discharge molten steel in the tundish into the mold through the lower nozzle during the operation of the upper and lower sliding gates. In the inert gas uniform supply device of the upper nozzle for continuous casting machine to give, the inner wall body is formed in the center and the body is formed of a porous material as the upper and lower discharge hole is formed in the center; It is mounted along the circumferential surface of the inner wall and is supported, and the inner circumferential surface is in contact with the porous material, characterized in that made of a case that is evenly attached to the contact protrusion forming a passage space of the inert gas.

도 1은 종래기술에 따른 연속주조기용 상부노즐의 장착상태를 도시한 도면,1 is a view showing a mounting state of the upper nozzle for a continuous casting machine according to the prior art,

도 2의 (a) 내지 (i)는 종래기술에 따른 연속주조기용 상부노즐의 사용상태를 도시한 도면,2 (a) to (i) is a view showing a state of use of the upper nozzle for a continuous casting machine according to the prior art,

도 3은 본 발명에 따른 연속주조기용 상부노즐을 도시한 개략도,3 is a schematic view showing an upper nozzle for a continuous casting machine according to the present invention;

도 4(a)와 (b)는 본 발명에 따른 연속주조기용 상부노즐의 케이스를 도시한 평면도이다.Figure 4 (a) and (b) is a plan view showing a case of the upper nozzle for a continuous casting machine according to the present invention.

* 도면 중 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

100 : 딜리버리장치 110 : 상부노즐100: delivery device 110: upper nozzle

120,130 : 상/하부슬라이딩게이트 140 : 하부노즐120,130: Upper / lower sliding gate 140: Lower nozzle

10 : 내벽체 11 : 상하배출공10: inner wall 11: up and down exhaust hole

12 : 다공물질 30 : 케이스12: porous material 30: case

31 : 밀착돌기 33 : 통과공간31: adhesion protrusion 33: passing space

이하, 본 발명에 따른 실시예를 첨부된 예시도면을 참고로하여 상세하게 설명하면 다음과 같다.Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 연속주조기용 상부노즐의 개략도이며, 도 4는 본 발명에 따른 연속주조기용 상부노즐의 케이스를 도시한 평면도로서, 턴디쉬(200)의 바닥면에 장착되어 공기를 차단하여줌과 더불어 상/하부슬라이딩게이트(120,130)의 작동과정에서 턴디쉬내의 용강을 하부노즐(140)을 통해 몰드로 배출하여주도록 된 연속주조기용 상부노즐의 불활성가스 균일 공급 장치를 구성함에 있어서, 중심부에 용강의 배출관로인 상하배출공(11)이 형성됨과 더불어 그 몸체가 전체적으로 다공물질(12)로 성형되어진 내벽체(10)와; 내벽체(10)의 둘레면을 따라 장착되어 지지함과 더불어 그 내주면에 다공물질(12)로 면접촉되어 불활성가스의 통과공간(33)을 이루는 밀착돌기(31)가 균일하게 부착되어진 케이스(30)로 이루어져 있다.3 is a schematic view of the upper nozzle for the continuous casting machine according to the present invention, Figure 4 is a plan view showing a case of the upper nozzle for the continuous casting machine according to the present invention, mounted on the bottom surface of the tundish 200 to block air In the construction of the inert gas uniform supply device of the upper nozzle for the continuous casting machine to discharge the molten steel in the tundish to the mold through the lower nozzle 140 in the course of the operation of the upper and lower sliding gates (120, 130), An inner wall body 10 in which a vertical discharge hole 11, which is a discharge pipe path of molten steel, is formed at the center thereof, and the body is formed entirely of a porous material 12; The case is mounted along the circumferential surface of the inner wall body 10 to support the inner circumferential surface of the inner wall 10, and is in contact with the porous material 12 to form a contact space 31 of the inert gas. It consists of 30).

여기서, 본 발명에 따른 구성요소 중 딜리버리장치(100)의 상부노즐(110)과 상/하부슬라이딩게이트(120,130)와 하부노즐(140)과 턴디쉬(200)는 종래기술과 기능상 동일하므로 자세한 설명은 생략하기로 하고, 다만 상부노즐(110)의 형상이 변경된 것에만 그 차이점이 있음을 첨언한다.Here, among the components according to the present invention, the upper nozzle 110 and the upper / lower sliding gates 120 and 130 and the lower nozzle 140 and the tundish 200 of the delivery device 100 will be described in detail as in the related art. Will be omitted, but adds that there is a difference only in the shape of the upper nozzle 110 is changed.

그리고, 상부노즐(110)은, 턴디쉬(200)로부터 배출되어지는 용강을 몰드(미도시)로 공급하는 과정에서 이용되는 용강의 흐름관로로서, 턴디쉬(200)의 하부측에 장착되어진 내벽체(10)와, 내벽체(10)의 둘레면을 따라 장착되어 내벽체를 지지하여주는 케이스(20)로 구성되어 있다.In addition, the upper nozzle 110 is a flow path of molten steel used in the process of supplying molten steel discharged from the tundish 200 to a mold (not shown), and the inner nozzle is mounted on the lower side of the tundish 200. It consists of the wall 10 and the case 20 mounted along the circumferential surface of the inner wall 10 and supporting an inner wall.

그리고, 내벽체(10)는, 그 몸체가 전체적으로 다공물질(12)로 성형되어 외관을 이룸과 더불어, 몸체중심부에 턴디쉬(200)로부터 배출되는 용강의 흐름경로인 상하배출공(11)이 관통형성되어 있다.In addition, the inner wall body 10, the body is formed of a porous material 12 as a whole to achieve the appearance, the upper and lower discharge holes 11 which is the flow path of the molten steel discharged from the tundish 200 in the center of the body It is penetrated.

그리고, 케이스(30)는, 내벽체(10)의 둘레면을 따라 장착되어 내벽체를 지지하여주는 철강재질의 지지함체로서, 그 내주면을 따라 다공물질(12)로 면접촉되는 밀착돌기(31)가 연속적으로 균일하게 돌출형성되어 내벽체(10)와의 사이공간으로 불활성가사의 통과공간(33)을 형성한다.In addition, the case 30 is a steel support body mounted along the circumferential surface of the inner wall body 10 to support the inner wall body, and the contact protrusion 31 is in surface contact with the porous material 12 along the inner circumferential surface thereof. ) Is continuously uniformly formed to form a passage space 33 of the inert house as a space between the inner wall 10.

물론, 케이스(30)의 내벽에 형성되어진 밀착돌기(31)는, 가스공급노즐(32)로부터 압송되는 아르곤가스가 내벽체의 다공물질(12)로 균일하게 공급되도록, 도 4(a)와 (b)에서와 같은 사각형 또는 마름모형 및 원형이나 타원형 또는 사다리꼴 등과 같은 돌기를 연속적으로 나란하게 형성시킴이 바람직하다.Of course, the adhesion protrusion 31 formed on the inner wall of the case 30 is uniformly supplied with the argon gas fed from the gas supply nozzle 32 to the porous material 12 of the inner wall. It is preferable to continuously form side by side protrusions such as square or rhombus and circular, oval or trapezoidal shape as in (b).

이하, 본 발명에 따른 작용을 설명하면 다음과 같다.Hereinafter, the operation according to the present invention will be described.

먼저, 턴디쉬(200)내의 용강을 몰드로 장입하는 과정에서, 예컨대 턴디쉬의 용강이 상부노즐(110)을 통과하는 과정에서, 가스공급노즐(32)을 통해 압송되어지는 아르곤가스에 의해 상부노즐의 내벽을 따라 눌러붙지 않게 된다.First, in the process of charging the molten steel in the tundish 200 into a mold, for example, in the process of passing the molten steel of the tundish through the upper nozzle 110, the upper portion is formed by argon gas being pushed through the gas supply nozzle 32. It does not stick along the inner wall of the nozzle.

즉, 케이스(30)에 장착되어진 가스공급노즐(32)을 통해 불활성가스의 통과공간(33)으로 공급되어진 아르곤가스가, 내벽체(10)와 케이스(30)의 사이공간에 밀착돌기(31)를 매개로하여 균일하게 연속적으로 형성되어진 불활성가스의 통과공간 (33)을 통과하면서 균일화게 분포된다.That is, argon gas supplied to the passage space 33 of the inert gas through the gas supply nozzle 32 mounted on the case 30 is in close contact with the space between the inner wall body 10 and the case 30. It is uniformly distributed while passing through the passage space 33 of the inert gas which is formed uniformly and continuously through the media.

이어서, 통과공간(33)의 내부압력이 어느정도로 상승되는 경우, 즉, 통과공간의 내부압력이 균일화되는 경우, 다공물질(12)을 이루는 공간부를 통하여 기포 또는 기포막을 균일하게 형성하면서 상하배출공(11)으로 분사되는 것이다.Subsequently, when the internal pressure of the passage space 33 rises to a certain degree, that is, when the internal pressure of the passage space is uniform, the upper and lower discharge holes are formed uniformly through the space portion constituting the porous material 12. It is injected into (11).

따라서, 다공물질(12)을 통해 균일하게 형성되어진 기포 또는 기포막이, 내벽체(10)의 내벽을 따라 흐르거나 또는 비금속개재물을 포집하여 하향되므로, 상하배출공(11)의 막힘현상이 방지되는 것이다.Therefore, since the bubble or bubble film uniformly formed through the porous material 12 flows along the inner wall of the inner wall body 10 or collects the non-metallic inclusions, the clogging phenomenon of the upper and lower discharge holes 11 is prevented. will be.

이상에서 설명한 바와 같이 본 발명에 따른 연속주조기용 상부노즐의 불활성가스 균일 공급 장치에 의하면, 가스공급노즐을 통해 공급되는 불활성가스가 밀착돌기에 의해 균일하게 배치되어진 통과공간을 경유하여 용강흐름경로로 압송되므로써, 턴디쉬의 용강을 몰드로 공급되는 과정에서 발생되는 내화물의 막힘현상이 원천적으로 차단되어 용강의 편류현상 및 주속감소와 같은 설비사고가 예방되는 효과가 있는 것이다.As described above, according to the inert gas uniform supply device of the upper nozzle for continuous casting machine according to the present invention, the molten steel flow path through the through space in which the inert gas supplied through the gas supply nozzle is uniformly arranged by the close contact projections. By being pushed, the blockage of the refractory generated in the process of supplying the molten steel of the tundish to the mold is blocked at the source, thereby preventing equipment accidents such as the drift of the molten steel and the decrease in the circumferential speed.

Claims (1)

턴디쉬(200)의 바닥면에 장착되어 공기를 차단하여줌과 더불어 상/하부슬라이딩게이트(120,130)의 작동과정에서 턴디쉬내의 용강을 하부노즐(140)을 통해 몰드로 배출하여주도록 된 연속주조기용 상부노즐의 불활성가스 균일 공급 장치를 구성함에 있어서,It is mounted on the bottom surface of the tundish 200 to block the air and continuous casting to discharge the molten steel in the tundish through the lower nozzle 140 to the mold during the operation of the upper and lower sliding gates (120,130) In constructing the inert gas uniform supply device of the upper nozzle for 몸체중심부에 용강의 배출관로인 상하배출공(11)이 형성됨과 더불어 그 몸체가 전체적으로 다공물질(12)로 성형되어 외관을 이루는 내벽체(10)와; 내벽체(10)의 둘레면에 장착되어 내벽체를 지지함과 더불어 그 내벽에 다공물질(12)로 면접촉되어 불활성가스의 통과공간(33)을 이루는 다수개의 밀착돌기(31)가 균일하게 장착되어진 케이스(30)로 이루어진 것을 특징으로 하는 연속주조기용 상부노즐의 불활성가스 균일 공급 장치.An inner wall body 10 having upper and lower discharge holes 11 as discharge pipes of molten steel formed in the center of the body, and the body of which is formed from a porous material 12 as a whole; It is attached to the circumferential surface of the inner wall body 10 to support the inner wall body and a plurality of contact protrusions 31 which are in surface contact with the porous material 12 on the inner wall to form the passage space 33 of the inert gas uniformly. Inert gas uniform supply of the upper nozzle for a continuous casting machine, characterized in that consisting of the case 30 is mounted.
KR1020000082012A 2000-12-26 2000-12-26 Device for uniformly supplying the inert gas of upper nozzle KR20020052614A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215849U (en) * 1985-07-10 1987-01-30
JPS62130754A (en) * 1985-12-02 1987-06-13 Akechi Ceramics Kk Gas blowing type immersion nozzle
JPH0222249U (en) * 1988-07-22 1990-02-14
JPH11314142A (en) * 1998-04-30 1999-11-16 Nippon Steel Corp Nozzle for continuous casting
JP2000061595A (en) * 1998-08-21 2000-02-29 Nippon Steel Corp Refractory formed body for blowing gas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215849U (en) * 1985-07-10 1987-01-30
JPS62130754A (en) * 1985-12-02 1987-06-13 Akechi Ceramics Kk Gas blowing type immersion nozzle
JPH0222249U (en) * 1988-07-22 1990-02-14
JPH11314142A (en) * 1998-04-30 1999-11-16 Nippon Steel Corp Nozzle for continuous casting
JP2000061595A (en) * 1998-08-21 2000-02-29 Nippon Steel Corp Refractory formed body for blowing gas

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