KR860003030Y1 - Dam of tundish - Google Patents
Dam of tundish Download PDFInfo
- Publication number
- KR860003030Y1 KR860003030Y1 KR2019830010457U KR830010457U KR860003030Y1 KR 860003030 Y1 KR860003030 Y1 KR 860003030Y1 KR 2019830010457 U KR2019830010457 U KR 2019830010457U KR 830010457 U KR830010457 U KR 830010457U KR 860003030 Y1 KR860003030 Y1 KR 860003030Y1
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- South Korea
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- dam
- refractory
- tundish
- molten steel
- present
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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
- B22D41/02—Linings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Products (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 연속주조용 턴디쉬의 공정도.1 is a process chart of a continuous casting tundish.
제 2 도는 제 1 도에 본 고안이 설치된 상태의 A-A선단면도.2 is a cross-sectional view taken along line A-A of the present invention in FIG.
제 3 도는 본 고안 내화댐의 단면도.3 is a cross-sectional view of the fire resistant dam of the present invention.
제 4 도는 종래의 축조식 내화댐의 예시도.4 is an exemplary view of a conventional built-up refractory dam.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 골조 11 : 회수용고리10: frame 11: recovery ring
12 : 앵커 13 : 금침12: anchor 13: gold needle
14 : 캐스타블14: Castable
본 고안은 축조식이아닌 철구조물의 단일성형물로된 턴디쉬(Tundish)용 내화댐에 관한 것이다.The present invention relates to a fireproof dam for tundish, which is a monolithic structure of a non-building steel structure.
일반적으로 알려진 연속주조장치는 턴디쉬내에 몇개의 내화댐을 축조하고 침지노즐(Immersion Nozzle)을 설치하여 래들(Ladle)에서 유입되는 용강을 정류시켜 용강중에 수반되는 비금속개재물 및 슬래그를 용강과 분리하면서 주입량을 조절주입하고 있다. 그러나 다수의 내화물을 턴디쉬내에 일일히 축조하여서되는 내화댐은 내화물의 수명이 짧아 댐으로 축조한 뒤 단 1회 사용후 폐기해야되므로 내화물의 소모에 따른 원가 상승 및 턴디쉬내에서의 정비시간지연등의 문제점이 있었다. 즉, 첨부도면 제 4 도에서의 축조식 내화댐(5)을 제 1 도의 턴디쉬(2)내에 축조하여 연속주조하게 되면 래들(1)에서 유입되는 용강(15)주입류는 턴디쉬(2)내의 웰블럭(Well Block)(3)위에 떨어져 일차 낮은댐(4)에서 비금속 개재물 및 슬래그를 부상시키고 이차댐(5')의 밑에 뚫린 용강흐름구(6')를 통하여 비중차로서 용강은 흘러가고, 비금속개재물 및 슬래그는 분리되어 잔류하므로 주형(9)에 유입되는 것을 최소로 막게되는 것이었다. 이때 이차댐(5')은 통상 내화물을 축조한 것으로 그수명이 단일회의 사용후 폐기되는 문제점이 있었던 것이다. 뿐만 아니라 폐기시의 정비시간은 물론, 다시 축조할 경우의 축조시간이 지연되며 재축조할 때마다 소모되는 내화물의 소모에 따른 원가상승의 문제점도 있었다.Generally known continuous casting apparatus constructs several refractory dams in tundish and installs Immersion Nozzle to rectify molten steel flowing from ladle to separate non-metallic inclusions and slag accompanying molten steel from molten steel. Injection volume is controlled. However, refractory dams, which are built a lot of refractory in tundish, need to be discarded after only one use after construction as a dam because the life of refractory is short. There was a problem. That is, when the continuous refractory dam 5 in FIG. 4 is built into the tundish 2 of FIG. 1 and continuously cast, the molten steel 15 flowing from the ladle 1 is tundish 2. As a specific gravity through the molten steel flow hole (6 '), which falls on the Well Block (3) in the bottom of the secondary dam (5') and floats non-metallic inclusions and slag on the primary low dam (4). As it flowed, the non-metallic inclusions and slag remained separated and thus minimized from entering the mold 9. At this time, the secondary dam (5 ') is usually a refractories that have a problem that its life is discarded after a single use. In addition, the maintenance time at the time of disposal, as well as the construction time is delayed when re-building, there was a problem of cost increase due to the consumption of the refractory consumed each time re-building.
따라서 축조 및 폐기가 간단한 내화댐이 필요로되며 일회사용후 폐기되지 않고 5회정도의 반복사용이 가능한 사용수명을 갖는 내화댐이 필요로 된다.Therefore, a fireproof dam that is simple to build and dispose of is required, and a fireproof dam having a service life that can be used repeatedly for about five times without being disposed of after a company is needed.
본 고안의 목적은 내화댐을 축조식으로 하지않고 간단히 설치되는 단일성형물로함과 더불어 사용수명을 연장하고자하는데에 있다. 이와같은 목적을 달성하기 위하여 본 고안은 금침이 혼합된 캐스타블로서 역사다리꼴형 몸체를 이루도록함과 동시에 그 상부로 고리를 노출시키면서 캐스타블에 매설되게 앵커가 결합된 골조를 구성하여서 된다.The purpose of the present invention is to extend the service life of a single molded product that is simply installed without a refractory dam. In order to achieve the above object, the present invention is to form a structure in which the anchor is embedded in the castable while exposing the ring to the upper part while forming a trapezoidal body with a mixture of golden needles.
이를 첨부도면에 의거 상세히 설명하면 다음과 같다.This will be described in detail based on the accompanying drawings.
본 고안은 제 4 도와 같이 다수의 내화물로 축조된 이차댐(5')의 전체형상과 동일한 역사다리꼴을 이루도록 하고 저면전체를 용강흐름구(6)로 되게한다.The present invention achieves the same trapezoidal shape as that of the entire shape of the secondary dam 5 'constructed of a plurality of refractory materials as shown in the fourth diagram, and the entire bottom surface is made into the molten steel flow sphere 6.
본 고안은 제 2 도와 제 3 도의 단면도와 같이 상단외부로 회수용고리(11)를 노출되게 구성하도록 골조(10)를 댐본체(5)내부로부터 구성하고, 이골조(10)에는 내부에 수개의 앵커(Anchor)(12)가 용착되어 있다.In the present invention, the frame 10 is configured from the inside of the dam main body 5 so that the recovery ring 11 is exposed to the outside of the upper end as shown in the cross-sectional view of FIG. 2 and FIG. Two anchors 12 are welded.
이때에 댐본체(5)는 다수의 금침(13)이 혼합된 캐스타블(14)로 이루어진다.At this time, the dam main body 5 is composed of a castable 14 mixed with a plurality of gold needles (13).
특히 이와같은 캐스타블(14)과 골조(10)의 결합시 골조 및 앵커와 내화물간 열팽장차가 약 2배(1.5×10℃-0.6=10/℃=0.9×10/℃)정도로된다. 따라서 이를 보정하지 않으면 크랙(crack)이 발생한다.In particular, when the castable 14 and the frame 10 are combined, the thermal expansion difference between the frame, the anchor, and the refractory becomes about twice (1.5 × 10 ° C.-0.6 = 10 / ° C. = 0.9 × 10 / ° C.). Therefore, if this is not corrected, a crack will occur.
따라서 이를 보정하기위하여 두께 3mm인 면테이프를 감아 주므로서 면테이프가 열에 의해 소화되어 골조 및 앵커와 내화물간의 공간대를 형성시켜 열팽창차이를 상쇄하게 된다. 또한 이와같은 열팽창을 극소화시키기 위하여 상기 면테이프 위에 수성페인트를 도장한뒤 알루미나파우더(Alumina Powder)를 도포한다. 이것은 열전도순서가 철물이 제일좋고, 그다음 알루미나, 내화물이므로 열전도도가 가장높은 철물의 급격한 팽창으로 내화물의 균열이 발생하는 것을 억제하게되기 때문이다.Therefore, in order to compensate for this, by winding a 3mm thick cotton tape, the cotton tape is extinguished by heat to form a space between the frame and the anchor and the refractory to offset the thermal expansion difference. In addition, in order to minimize such thermal expansion, an aqueous paint is coated on the cotton tape and an alumina powder is applied. This is because the thermal conductivity is the best iron, followed by alumina and refractory, thereby suppressing the occurrence of cracks in the refractory due to the rapid expansion of the iron with the highest thermal conductivity.
미설명부호 7은 지금(地金)방지댐이고, 8은 침지노즐이다. 이상과 같이 구성된 본 고안은 내화댐(5)을 기존축조식이차댐(5')의 자리에 삽입설치하여 사용케된다.Unexplained reference numeral 7 is an anti-damage dam, and 8 is an immersion nozzle. The present invention configured as described above is used by inserting and installing the refractory dam (5) in place of the existing built secondary secondary dam (5 ').
따라서 용강흐름구(6)를 통하여 용강이 흘러가 지금방지댐(7)에서 비금속개재물 및 슬래그가 분리되어 잔류한 뒤 주형(9)에는 비금속 개재물 및 슬래그가 거의없는 용강이 유입되게 된다.Therefore, the molten steel flows through the molten steel flow hole 6, and the non-metallic inclusions and slag are separated from the now-prevented dam 7 and remain.
이때 본 고안은 용강의 유출이 끝나고나면 댐본체(5)의 저면 일정높이에 묻어있는 지금을 제거하기 위하여 고리(11)를 걸어 간단히 들어낼 수 있게 되며 보수가 끝난뒤에도 신속하게 원위치에 설치할 수 있게되는 것이다.At this time, after the outflow of molten steel, the hook 11 can be easily lifted to remove the current buried at a certain height of the bottom of the dam main body 5 so that it can be quickly returned to its original position after repair. Will be.
뿐만 아니라 본 고안은 금침(13)과 캐스타블(14)의 단일혼합물로 되므로서 내화도가 향상되어 5~6회 반복사용하게 된다. 이와같이 본 고안은 종래에 소형내화벽돌을 축조하여 저면으로 용강유출구를 구성할 경우 축조시간의 장시간화 및 재사용의 불가능, 폐기시간역시 지연되는 등의 문제점을 개선하므로서 내화댐의 설치 및 보수를 신속하게함은 물론, 내화댐의 수명을 연장하게되는 등이 효과가 있다.In addition, the present invention is a single mixture of the gold needle 13 and the castable 14, so that the fire resistance is improved to be used repeatedly 5 to 6 times. As such, the present invention provides a molten steel outlet on the bottom by constructing a small refractory brick, thereby improving the problems such as prolonged construction time and impossibility of reuse, delayed disposal time, and the like. Of course, it is effective to extend the life of the refractory dam.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019830010457U KR860003030Y1 (en) | 1983-12-09 | 1983-12-09 | Dam of tundish |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019830010457U KR860003030Y1 (en) | 1983-12-09 | 1983-12-09 | Dam of tundish |
Publications (2)
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KR850004713U KR850004713U (en) | 1985-07-31 |
KR860003030Y1 true KR860003030Y1 (en) | 1986-11-06 |
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KR2019830010457U KR860003030Y1 (en) | 1983-12-09 | 1983-12-09 | Dam of tundish |
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KR (1) | KR860003030Y1 (en) |
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1983
- 1983-12-09 KR KR2019830010457U patent/KR860003030Y1/en not_active IP Right Cessation
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KR850004713U (en) | 1985-07-31 |
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