KR20010110882A - Mud sealant for sealing dummy bar - Google Patents
Mud sealant for sealing dummy bar Download PDFInfo
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- KR20010110882A KR20010110882A KR1020000031543A KR20000031543A KR20010110882A KR 20010110882 A KR20010110882 A KR 20010110882A KR 1020000031543 A KR1020000031543 A KR 1020000031543A KR 20000031543 A KR20000031543 A KR 20000031543A KR 20010110882 A KR20010110882 A KR 20010110882A
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- dummy bar
- mold
- present
- sealant
- sealing
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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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/088—Means for sealing the starter bar head in the moulds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S277/00—Seal for a joint or juncture
- Y10S277/935—Seal made of a particular material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Material Composition (AREA)
Abstract
본 발명은 일관제철소의 연속주조 작업시 슬라브의 두께와 폭을 결정하는 주형 내부로 주조초기 슬라브를 인출시키는 더미바 실링재의 개선에 관한 것이다.The present invention relates to an improvement of a dummy bar sealing material which draws initial casting slabs into a mold which determines the thickness and width of the slab during continuous casting of an integrated steelworks.
이러한 본 발명은 연주작업시 주조초기 주편을 인출시키도록 주형 내부로 더미바를 삽입한 후 상기 더미바와 주형 사이의 전,후,좌,우 틈새를 밀폐하도록 삽입되어 다져지는 더미바 실링재에 있어서, 감열감량 특성 및 수분해성이 우수한 특성을 가지도록 SiO2, Al2O3및 CaO 가 혼합된 50~60%의 점토질성분과; 글리세린, 페놀레진이 혼합된 40~50%의 휘발성분이 상기 점토질성분과 혼합되어 이루어진다.The present invention, in the dummy bar sealing material that is inserted and compacted to seal the gap between the dummy bar and the mold before, after, left and right after inserting the dummy bar into the mold to draw out the initial casting cast during the playing work, 50 to 60% of clay component mixed with SiO 2 , Al 2 O 3 and CaO to have excellent weight loss and hydrolysis properties; Glycerin and phenol resin 40 to 50% of the volatile components are mixed with the clay component.
이에 따라, 본 발명은 주형의 동판 마모를 획기적으로 줄일 뿐만 아니라 냉각수에 의해 자연 분해되므로 냉각수 노즐의 막힘현상을 극소화하고 냉각효율이 증대되므로 설비의 열화를 방지함은 물론 실링효율이 우수하여 더미바와 주편의 연결상태를 견고히 하여 주편의 인출작업을 용이하게 하여 주는 장점을 제공한다.Accordingly, the present invention not only significantly reduces the wear of the copper plate of the mold, but also naturally decomposes by the coolant, thereby minimizing the blockage of the coolant nozzle and increasing the cooling efficiency, thereby preventing deterioration of the equipment and excellent sealing efficiency. It provides the advantage that the connection state of cast steel is firm and easy to take out of cast steel.
Description
본 발명은 일관제철소의 연속주조 작업시 슬라브의 두께와 폭을 결정하는 주형 내부로 주조초기 슬라브를 인출시키는 더미바 실링재의 개선에 관한 것이다.The present invention relates to an improvement of a dummy bar sealing material which draws initial casting slabs into a mold which determines the thickness and width of the slab during continuous casting of an integrated steelworks.
주조작업을 하기 위해서는 도 1 및 도 2의 도시와 같이, 슬라브(2)의 두께와 폭을 결정하는 주형(1) 내부로 주조초기 슬라브(2)를 인출시키는 더미바(DUMMY BAR)(3)를 주형(1)의 일정한 부분까지 삽입시키고 1차로 더미바(3)의 전,후,좌,우4면에 페이퍼와이어(4)를 삽입하여 다진 후 2차로 칩(50)(쇠못을 잘게 절단한 것)을 더미바(3)의 표면부 및 페이퍼와이어(4)의 삽입부 상부에 20-30mm 두께로 골고루 충전한 후 용강이 흘러내리지 못하도록 완벽하게 다진다.In order to perform the casting operation, as shown in Figs. 1 and 2, a dummy bar (DUMMY BAR) (3) which draws out the initial casting slab (2) into the mold (1) to determine the thickness and width of the slab (2) Insert to a certain part of the mold (1) and first chopped by inserting the paper wire (4) on the front, back, left, right four sides of the dummy bar (3) and then secondly cut the chip 50 (cut nails) 1) evenly filled to the surface of the dummy bar (3) and the top of the insertion portion of the paper wire 4 to 20-30mm thickness and then completely squeezed to prevent the molten steel from flowing down.
이어, 3차로 규격화된 코일스프링(6)을 칩(5) 위에 일정량 삽입시켜 더비바(3) 실링작업을 완료한 후 주형 내부로 용강을 주입시키고 일정시간 경과후(30-40초) 더미바(3)를 인출시키면 더미바(3)에 연결된 슬라브(2)가 1,2차 냉각과정을 거치면서 연속적으로 주조설비 외부로 인출되게 된다.Subsequently, a third amount of the standardized coil spring 6 is inserted into the chip 5 to complete the derby bar 3 sealing work, and then molten steel is injected into the mold. After a predetermined time (30-40 seconds), the dummy bar Withdrawing (3), the slab (2) connected to the dummy bar (3) is continuously drawn out of the casting facility while undergoing the first and second cooling processes.
그런데, 종래에는 실링재인 칩(5)을 다량으로 사용하는 관계로(대략 40-50kg) 주조초기 더미바(3)의 기동 작업시 미용융된 칩(5)이 주형(1)의 동판을 마모, 훼손시키는 주요인이 되고 있으며, 2차 냉각과정에서 냉각수 노즐을 막아 설비의 열화를 초래하는 문제점이 있었다.By the way, in the past, since the chip 5, which is a sealing material, is used in large quantities (approximately 40-50 kg), the unmelted chip 5 wears the copper plate of the mold 1 during the initial operation of the initial casting dummy bar 3. As a result, it has become a major cause of damage, and has a problem of causing deterioration of equipment by blocking the coolant nozzle during the secondary cooling process.
또한, 페이퍼와이어(4)의 경우는 냉각수에 의해 분해되지 않기 때문에 설비내에 축적되어 슬라브(2)의 냉각을 저해할 뿐만 아니라 냉각수의 분무를 방해하여 설비의 열화를 유발하여 수명을 단축시키는 원인이 되었다.In addition, since the paper wire 4 is not decomposed by the coolant, it accumulates in the facility and not only inhibits the cooling of the slab 2, but also interferes with the spraying of the coolant, causing deterioration of the facility and shortening the lifespan. It became.
본 발명은 상술한 바와 같은 종래 기술이 갖는 제반 문제점을 감안하여 이를 해결하고자 창안된 것으로, 연주작업시 주조초기의 슬라브를 인출시키는 더미바의 실링용 실링재를 개선하여 주형의 동판 마모, 훼손을 방지함은 물론 설비의 열화를 최소화시킬 수 있는 더미바 실링용 진흙 실런트를 제공함에 그 목적이 있다.The present invention was devised to solve this problem in view of the above-described problems of the prior art, and improves the sealing material for sealing the dummy bar which draws out the slab of the initial casting during the performance of the casting to prevent the wear and damage of the copper plate of the mold. In addition, the purpose of the present invention is to provide a mud sealant for dummy bar sealing that can minimize deterioration of equipment.
도 1은 일반적인 연주설비의 개략적인 구성도,1 is a schematic configuration diagram of a general playing equipment,
도 2는 종래 기술에 따른 더미바 실링작업 상태를 도시한 예시도,Figure 2 is an illustration showing a dummy bar sealing operation state according to the prior art,
도 3은 본 발명에 따른 진흙 실런트의 다양한 형상을 도시한 예시도,3 is an exemplary view showing various shapes of a mud sealant according to the present invention;
도 4는 본 발명에 따른 진흙 실런트를 이용한 더미바 실링작업 상태를 도시한 예시도.Figure 4 is an exemplary view showing a dummy bar sealing operation state using a mud sealant according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
1 : 주형, 2 : 주편(슬라브),1: mold, 2: slab,
3 : 더미바, 6 : 코일스프링.3: dummy bar, 6: coil spring.
상기한 본 발명의 목적은 연주작업시 주조 초기 주편을 인출시키도록 주형 내부로 더미바를 삽입한 후 상기 더미바와 주형 사이의 전,후,좌,우 틈새를 밀폐하도록 삽입되어 다져지는 더미바 실링재에 있어서, 감열감량 특성 및 수분해성이 우수한 특성을 가지도록 SiO2, Al2O3및 CaO 가 혼합된 50~60%의 점토질성분과; 글리세린, 페놀레진이 혼합된 40~50%의 휘발성분이 상기 점토질성분과 혼합되어 이루어짐에 의해 달성된다.An object of the present invention described above is to insert the dummy bar into the mold to draw out the initial cast during the casting operation, and then inserted into the dummy bar sealing material which is inserted to seal the gap between the dummy bar and the mold before, after, left and right. 50 to 60% clay component mixed with SiO 2 , Al 2 O 3 and CaO to have excellent thermal loss characteristics and hydrolysis properties; 40 to 50% of the volatile component of glycerin and phenol resin is achieved by mixing with the clay component.
이하에서는, 본 발명에 따른 바람직한 일 실시예를 첨부도면에 의거하여 보다 상세하게 설명한다.Hereinafter, a preferred embodiment according to the present invention will be described in more detail on the basis of the accompanying drawings.
도 3은 본 발명에 따른 진흙 실런트의 다양한 형상을 보인 예시도이다.3 is an exemplary view showing various shapes of a mud sealant according to the present invention.
도 3을 참조하면, 본 발명의 진흙 실런트는 더비바의 각부를 용이하면서도 견실하게 밀폐할 수 있도록 다양한 형상을 가질 수 있는 바, 도시와 같이 원형과 사각형상이 바람직하다.Referring to FIG. 3, the mud sealant of the present invention may have various shapes to easily and reliably seal each part of the derby bar, and a round shape and a quadrangular shape are preferable as shown.
원형 진흙 실런트의 경우에는 그 직경을 달리하는 바, 이를 테면 14Φ(8), 25Φ(9), 30Φ(10)의 세종류와 사각형상의 진흙 실런트는 5 t 두께의 정사각(11) 및 직사각(12) 형태로 만들어질 수 있으며 각 형상마다 비닐과 같은 포장물로 밀폐하여 실런트의 휘발성분이 쉽게 휘발되지 않도록 하여 보관함이 바람직하다.In the case of the circular mud sealant, the diameter thereof is different. For example, three types of 14Φ (8), 25Φ (9), and 30Φ (10) and the rectangular mud sealant are 5 t thick squares (11) and rectangular (12). It can be made in the form of), and it is preferable to store it in a seal such as vinyl for each shape so that volatiles of the sealant are not easily volatilized.
진흙 실런트의 성분은 실링작업시 작업의 용이성과 기밀성(틈새발생방지)이 우수하여야 하는 바, 이러한 조건을 충족시키기 위해서 본 발명의 진흙 실런트의 성분 구성은 원재료인 점토질성분과 실링작업시 접착제 역할을 하는휘발성분(IGNITION LOSS)으로 구성된다.The components of the mud sealant should be excellent in the ease of work and airtightness (prevention of gap) during the sealing work, in order to satisfy these conditions, the mud sealant composition of the present invention plays an important role as the clay material and the adhesive during sealing work. It consists of volatile components (IGNITION LOSS).
점토질성분은 SiO2, Al2O3및 CaO 등으로 구성되며, 휘발성분은 글리세린, 페놀레진 등으로 구성된다.Clay component is composed of SiO 2 , Al 2 O 3 and CaO and the like, volatile components are composed of glycerin, phenol resin and the like.
하기한 표 1은 본 발명에 따른 진흙 실런트 성분의 구성비에 따른 성능 측정결과이다.Table 1 below is a performance measurement result according to the composition ratio of the mud sealant component according to the present invention.
상기 표 1에 표시된 범례는 ◎ : 우수, △ : 미흡, ×: 불량 을 나타낸다.The legend shown in Table 1 indicates ◎: excellent, Δ: insufficient, ×: poor.
표 1에 나타난 바와 같이, 형상유지성, 설비내 분해성, 실링작업성, 기밀성, 냉각수 노즐막힘방지성 등이 가장 우수한 경우는 점토질과 휘발성분이 50~60 : 40~50 % 의 구성비를 가질 때였다.As shown in Table 1, the most excellent shape retention, degradability in the facility, sealing workability, airtightness, and cooling water nozzle clogging were when clay and volatile components had a composition ratio of 50 to 60: 40 to 50%.
본 발명의 진흙 실런트는 주조 초기에만 사용되는 실링재이므로 감열감량특성, 즉 열에 의해 휘발성분이 휘발되면서 그 양이 줄어드는 특성을 가짐이 매우 바람직하며, 제거의 용이성을 위해 물에 잘 분해되는 수분해성이 우수한 특성을 가짐이 특히 바람직하다.Since the mud sealant of the present invention is a sealing material used only at the beginning of casting, it is highly desirable to have a thermal loss characteristic, that is, a characteristic of decreasing the amount of volatiles by volatilization by heat, and excellent hydrolysis property that is decomposed well in water for ease of removal. Particular preference is given to having properties.
특히, 실험에 의하면 구성비중 점토질 54% 대 휘발성분 46% 일 경우가 가장 우수한 형상유지성, 설비내 분해성, 실링작업성, 기밀성 및 노즐막힘방지성을 지님을 알 수 있었다.In particular, the experiments showed that 54% of the clay composition to 46% of the volatile components had the best shape retention, degradability in the equipment, sealing workability, airtightness, and nozzle clogging.
각 성분에 함유된 점토질성분을 구성하는 SiO2, Al2O3및 CaO 는 SiO2:61%, Al2O3및 CaO : 38%(각 19%씩) 그리고 기타 1%로 하고, 휘발성분을 구성하는 글리세린, 페놀레진은 글리세린 : 65%, 페놀레진 : 35%로 하여 진흙 실런트를 구성하였다.SiO 2 , Al 2 O 3 and CaO constituting the clay component contained in each component are SiO 2 : 61%, Al 2 O 3 and CaO: 38% (19% each) and other 1% Glycerin and phenol resin constituting the glycerol: 65%, phenol resin: 35% to form a mud sealant.
본 발명의 실런트 구성비가 점토질 50~60%, 휘발성분 40~50% 로 한정되는 이유는 점토질이 50% 이하로 구성되게 되면 실런트의 형상유지가 불리하고 결속력이 저하되어 실링재로서의 기능이 현저히 떨어지며, 점토질이 60% 이상 구성되게 되면 실링재의 고착화를 초래하고 작업성을 저하시켜 작업능률 및 실링효율이 현격히 떨어지는 문제가 있기 때문이다.The reason why the sealant composition ratio of the present invention is limited to 50 to 60% of clay and 40 to 50% of volatile components is that when the clay is composed of 50% or less, the shape retention of the sealant is disadvantageous and the binding force is lowered, thereby significantly reducing the function as a sealing material. If the clay is 60% or more composed of the sealing material causes a problem of work efficiency and sealing efficiency is significantly lowered by lowering the workability.
도 4는 본 발명에 따른 진흙 실런트의 사용예를 도시한 예시도로서, 주형(1) 내부로 삽입된 더미바(3)의 전,후,좌,우에 발생된 빈 틈새를 14Φ(8), 25Φ(9), 30Φ(10)의 진흙 실런트로 다져 빈틈의 발생을 1차로 방지하고, 정사각(11) 및 직사각(12) 형상의 진흙 실런트로 더미바(3)의 표면이 보이지 않도록 다져 2차로 실링한다.Figure 4 is an exemplary view showing an example of the use of the mud sealant according to the present invention, 14Φ (8), the empty gap generated before, after, left, right of the dummy bar (3) inserted into the mold (1); It is compacted with mud sealants of 25 Φ (9) and 30 Φ (10) to prevent the occurrence of gaps first, and the surface of the dummy bar 3 is compacted so that the surface of the dummy bar 3 is not visible with the mud sealants of the square (11) and the rectangular (12) shapes. Seal it.
그런 다음, 3차로 기존의 코일스프링(6)을 진흙 실런트의 위에 세팅하여 상기 더미바(3)의 실링작업을 완료하게 된다.Then, the existing coil spring 6 is set on the mud sealant in the third order to complete the sealing of the dummy bar 3.
이와 같은 상태에서 주형(1) 내부로 주입된 용강이 더미바(3)의 표면 각부로 고르게 스며들면서 더미바(3)와 도 1의 주편(2)의 연결상태를 더욱 견고하게 만들어주며, 진흙 실런트의 휘발성분은 용강에 의해 소각되어 없어지고 주형(1) 내부에서 1차냉각과정을 거친 후 더미바(3)의 인출시 더미바(3) 각 부에 다져진 진흙 실런트중 일부는 더미바(3)가 주형을 통과하면서 설비내부로 떨어지고 나머지는 살수되는 냉각수에 의해 떨어지면서 모두 상기 냉각수에 의해 자연 분해되게 된다.In such a state, molten steel injected into the mold 1 penetrates into the surface of the dummy bar 3 evenly, thereby making the connection between the dummy bar 3 and the cast piece 2 of FIG. Volatile components of the sealant are incinerated by the molten steel, and after the primary cooling process in the mold (1), some of the mud sealants that are compacted in each part of the dummy bar (3) during the extraction of the dummy bar (3) are dummy bars ( As 3) passes through the mold and falls into the installation, the rest is dropped by the cooling water to be sprinkled, and all are spontaneously decomposed by the cooling water.
따라서, 냉각수 노즐의 막힘현상이 방지되어 설비의 열화를 방지하게 된다.Therefore, clogging of the cooling water nozzle is prevented, thereby preventing deterioration of the equipment.
이상에서 상세히 설명한 바와 같이, 본 발명에 따른 더미바 실링용 진흙 실런트는 주형의 동판 마모를 획기적으로 줄일 뿐만 아니라 냉각수에 의해 자연 분해되므로 냉각수 노즐의 막힘현상을 극소화하고 냉각효율이 증대되므로 설비의 열화를 방지함은 물론 실링효율이 우수하여 더미바와 주편의 연결상태를 견고히 하여 주편의 인출작업을 용이하게 하여 준다.As described in detail above, the dummy bar sealing mud sealant according to the present invention not only significantly reduces the wear of the mold copper plate, but also is naturally decomposed by the coolant, thereby minimizing the blockage of the coolant nozzle and increasing the cooling efficiency, thereby deteriorating equipment. In addition, the sealing efficiency is excellent, and the connection between the dummy bar and the cast steel is secured, thereby facilitating drawing out of the cast steel.
또한, 기존의 칩과 같은 중량물을 실링재로 사용하지 않음으로써 작업능률이 향상되고 생산성이 증대되는 장점을 제공한다.In addition, by using a heavy material such as a conventional chip as a sealing material provides an advantage that work efficiency is improved and productivity is increased.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000031543A KR20010110882A (en) | 2000-06-09 | 2000-06-09 | Mud sealant for sealing dummy bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000031543A KR20010110882A (en) | 2000-06-09 | 2000-06-09 | Mud sealant for sealing dummy bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20010110882A true KR20010110882A (en) | 2001-12-15 |
Family
ID=45929662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020000031543A KR20010110882A (en) | 2000-06-09 | 2000-06-09 | Mud sealant for sealing dummy bar |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20010110882A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276026A (en) * | 2020-09-26 | 2021-01-29 | 广东韶钢松山股份有限公司 | Sealing dummy ingot composition, preparation method and application thereof |
| CN112916813A (en) * | 2019-12-05 | 2021-06-08 | 上海梅山钢铁股份有限公司 | Method for accurately selecting scrap iron material for continuous casting safety seal dummy ingot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05318049A (en) * | 1992-05-13 | 1993-12-03 | Sumitomo Metal Ind Ltd | Dummy bar head and sealing method therefor |
| JPH07100602A (en) * | 1993-10-06 | 1995-04-18 | Sumitomo Metal Ind Ltd | Method for sealing dummy bar in continuous casting mold and dummy bar head |
| JPH0919745A (en) * | 1995-06-30 | 1997-01-21 | Nippon Steel Corp | Dummy bar head sealing method in continuous casting method |
| KR200184850Y1 (en) * | 1999-10-30 | 2000-06-01 | 포항종합제철주식회사 | A sealing bracket of dummy bar head |
-
2000
- 2000-06-09 KR KR1020000031543A patent/KR20010110882A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05318049A (en) * | 1992-05-13 | 1993-12-03 | Sumitomo Metal Ind Ltd | Dummy bar head and sealing method therefor |
| JPH07100602A (en) * | 1993-10-06 | 1995-04-18 | Sumitomo Metal Ind Ltd | Method for sealing dummy bar in continuous casting mold and dummy bar head |
| JPH0919745A (en) * | 1995-06-30 | 1997-01-21 | Nippon Steel Corp | Dummy bar head sealing method in continuous casting method |
| KR200184850Y1 (en) * | 1999-10-30 | 2000-06-01 | 포항종합제철주식회사 | A sealing bracket of dummy bar head |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916813A (en) * | 2019-12-05 | 2021-06-08 | 上海梅山钢铁股份有限公司 | Method for accurately selecting scrap iron material for continuous casting safety seal dummy ingot |
| CN112276026A (en) * | 2020-09-26 | 2021-01-29 | 广东韶钢松山股份有限公司 | Sealing dummy ingot composition, preparation method and application thereof |
| CN112276026B (en) * | 2020-09-26 | 2022-07-29 | 广东韶钢松山股份有限公司 | Sealing dummy ingot composition, preparation method and application thereof |
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