WO2016195454A1 - 응고 장치 - Google Patents
응고 장치 Download PDFInfo
- Publication number
- WO2016195454A1 WO2016195454A1 PCT/KR2016/006000 KR2016006000W WO2016195454A1 WO 2016195454 A1 WO2016195454 A1 WO 2016195454A1 KR 2016006000 W KR2016006000 W KR 2016006000W WO 2016195454 A1 WO2016195454 A1 WO 2016195454A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- section
- roller
- average
- metal plate
- roller pitch
- Prior art date
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Classifications
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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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
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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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
-
- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
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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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
-
- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1282—Vertical casting and curving the cast stock to the horizontal
Definitions
- the present invention relates to a solidification apparatus for producing a steel sheet by continuously solidifying molten metal.
- an apparatus for continuously solidifying molten metal is composed of a mold into which the molten metal enters, and a plurality of roller rows arranged successively on the discharge side of the mold.
- a plurality of roller rows are provided in segments.
- the molten metal surface is solidified in the mold, and the inside of the mold is not in progress of solidification, that is, exits to the semi-solidification state and passes through the roller rows, and gradually solidifies inward and completely solidifies, and then leaves the apparatus.
- the diameter of the roller located below is generally larger.
- the roller pitch which is the distance between the centers of two adjacent rollers in the advancing direction of the metal plate, also increases.
- the roller in contact with the surface of the metal plate suppresses the phenomenon that the metal plate swells outward due to the internal melt pressure.
- the roller pitch is increased, the section between the roller and the roller does not contact the metal plate is widened. This is somewhat bloated.
- the amount of swelling of the coagulation layer may be periodically increased or decreased, and it is estimated that this phenomenon causes fluctuations in the height of the melt surface.
- this phenomenon causes a change in the volume of the reaction solid metal plate, and progresses between the rollers in this state, causing a periodic height variation of the molten surface in the mold.
- this period of height fluctuation of the molten surface is closely related to the roller pitch spacing.
- the height fluctuation of the molten metal surface has a tendency of increasing the molten metal surface height variation as the metal plate traveling speed increases and the roller pitch increases, the exact mechanism of the mechanism is not known.
- the work is performed in a manner of limiting the moving speed of the metal plate within the allowable limit of the fluctuation of the height of the molten surface, thereby reducing the productivity of the metal plate.
- One embodiment of the present invention avoids the repeatability of the roller pitch in addition to changing the arrangement of the rollers in order to reduce the periodic fluctuations of the molten surface, thereby making the height variation of the molten surface relatively insensitive to the moving speed of the metal plate. It is an object of the present invention to provide a coagulation apparatus that significantly increases the moving speed of the metal plate and further increases the productivity of the metal plate.
- the solidification apparatus is a solidification apparatus for producing a solidified metal plate from molten metal, including a roller row disposed along the traveling direction of the metal plate, when the roller row is divided into a plurality of sections, In one section, the average of the roller pitches, which is the distance between the centers of two rollers adjacent in the advancing direction of the metal plate, is smaller than the average of the roller pitches in the preceding section.
- the average of the roller pitch in any one section may be smaller than the average of the roller pitch in the trailing section.
- the section may be a space having at least four roller pitches.
- the section may be a space partitioned including a roller disposed at a length of 1m or more.
- section may be a space divided into physical partitions.
- the physical partition may be a segment unit.
- the section may be a space between one driving roll and the next driving roll.
- the difference between the average of the roller pitch in any one section and the average of the roller pitch in the preceding section may be 10mm or more.
- the difference in the roller pitch average may be 20mm or more.
- the moving speed of the metal plate may be 4m / min or more.
- the section includes a horizontal section for transporting the metal plate horizontally, and a curved section that is arranged to be curved at a predetermined curvature between the outlet and the horizontal section of the mold discharging the molten metal, the outlet and the curved It may include an inflection section provided in at least one of the section or the curved section and the horizontal section and arranged at different curvatures.
- the apparatus may further include a vertical section connected to the outlet to vertically transfer the metal plate and connected to the curved section.
- the average of the roller pitch of the interval may be defined by the following equation (1).
- N is the number of roller pitches defined in the section
- k is the section number
- i is the serial number of the roller pitch appearing in the section k.
- the solidification length of the metal plate may be defined by the following equation (2).
- L is the solidification completion length of the metal plate (mm)
- V is the progress rate per minute (mm / min) of the metal plate
- H is the thickness of the metal plate
- K is the solidification constant (mm / min 1/2 ) of 20 to 30.
- FIG. 1 is a conceptual diagram briefly showing a progress state of a metal plate.
- FIG. 2 is a schematic diagram of a coagulation apparatus according to one embodiment of the present invention.
- Figure 3 (a) to (c) is a simplified diagram showing the roller row of the solidification apparatus according to an embodiment of the present invention.
- Figure 4 is a graph showing the average of the roller pitch for each section and the average of the roller pitch for each section of the solidification apparatus according to an embodiment of the present embodiment.
- 5 is a view showing the relationship between the solidification length, the speed, the thickness of the metal plate in one embodiment of the present invention.
- Figure 6 is a graph showing the average of the roller pitch for each section of the solidification apparatus according to an embodiment of the present embodiment.
- Figure 2 is a schematic diagram of a solidification apparatus according to an embodiment of the present invention
- Figure 3 is a simplified diagram showing the roller row of the solidification apparatus according to an embodiment of the present invention.
- the solidification apparatus 10 cools the mold 20 for cooling the molten metal Y supplied from the tundish 1 and discharging the molten metal Y to the initial solidified metal plate B. It may include.
- the mold 20 has a cooling means therein, so that the molten metal in contact with the mold 20 starts cooling from the surface and is discharged in the form of a metal plate B, and the surface solidified with the metal plate B.
- the interior of the can be discharged unconsolidated.
- the discharge side of the mold 20 may include a row of rollers arranged along the traveling direction of the metal plate to guide the movement of the metal plate (B) discharged in a semi-solidified state, such a roller row is associated with the drive unit
- the transfer unit 30 can be configured.
- the transfer part 30 cools and solidifies the metal plate B in a reaction state and transfers it to a subsequent process.
- the transfer unit 30 may be divided into a plurality of sections according to the average roller pitch of the roller row.
- the section may be a space having at least four roller pitches. That is, the section may be a space including five rollers, and may be defined as a space having at least four roller pitches, which are distances between the centers of these rollers.
- the roller pitch is an important factor causing the height variation of the molten surface, and the interval is preferably defined for the roller pitch rather than the number of rollers.
- the average value of the roller pitches of each section may be represented by the following equation (1).
- N is the number of roller pitches defined in the section
- k is the section number
- i is the serial number of the roller pitch appearing in the section k.
- each section is defined as a space having at least four roller pitches, but the roller arrangements of opposite symmetric sections in each section need not be identically arranged and need to be defined as the same section. There is no, it is preferred to be defined as each independent interval.
- each section is defined as a space having at least four roller pitches, but the definition of the section is not limited and may be defined as sections along the length.
- the section may be a space partitioned including a roller disposed at a length of 1m or more.
- the section when each section is less than 1m, the height fluctuation of the molten surface is not easily exhibited with the rollers arranged very closely.
- the section may be limited to a space partitioned including a roller disposed at a sufficient length in the range allowed by the equipment conditions.
- the section may be defined as a space that is physically partitioned.
- the physically partitioned space may be a space partitioned by segment, as shown in FIG. 3B.
- the segment may be provided with a plurality of rollers for guiding the movement of the metal plate, and these rows of rollers may be physically partitioned to enable exchange, replacement, etc. by the segments.
- the space physically partitioned may be a space between one driving roll and the next driving roll in addition to the segment.
- the drive roll may be provided in the segment, for example, the drive roll may be provided in the center of the segment.
- the segment may include a plurality of roller rows in addition to the driving roll.
- the space between one driving roll and the next driving roll may be a space between the driving roll of the preceding segment and the driving roll of the following segment, and as a space between the driving rolls of the structure provided in various forms besides the segment unit.
- a plurality of roller rows may be arranged in this space.
- the roller train divided into a plurality of sections may have an average roller pitch, which is a distance between the centers of two rollers adjacent in the advancing direction of the metal in a normal section, greater than or equal to the roller pitch average in the preceding section.
- the average of the roller pitch which is the distance between the centers of two rollers neighboring in the advancing direction of the metal plate
- the average roller pitch which is the distance between the centers of two rollers neighboring in the advancing direction of the metal plate in one section, may be smaller than the average roller pitch in the preceding section.
- the average of the roller pitch which is the distance between the centers of two adjacent rollers in the advancing direction of the metal plate, is smaller than the average of the roller pitches in the preceding section
- the average of the roller pitches in the following section may be smaller.
- the roller pitch average of each section may appear as shown in the graph shown in FIG. 4 is a graph showing the average of the roller pitch for each section and the average of the roller pitch for each section of the solidification apparatus according to an embodiment of the present embodiment.
- the x axis represents a section and the y axis represents a roller average pitch.
- roller pitch average of any one section when the roller pitch average of any one section is reduced to less than 10mm than the roller pitch average of the preceding section, it does not affect the height variation of the molten surface in the mold.
- roller pitch average of any one section is reduced to 10 mm or more than the roller pitch average of the preceding section, it is possible to mitigate the height variation of the molten surface in the mold.
- the circumferential speed is about 0.5 m / min. Can be improved. That is, in the case of the prior art, if the circumferential speed was 6.5 m / min, it can be seen that after the roller pitch average is reduced by applying the present technology, the circumferential speed increases to 7.0 m / min.
- the degree of alleviating the height variation of the molten metal surface in the mold can be further improved.
- the circumferential speed is about 1.5m / min.
- the circumferential speed was 7.0 m / min. It can be seen that.
- the roller pitch average is 20 mm or more with respect to the roller pitch average of the preceding section.
- the upper limit of the roller pitch average may be determined according to the allowable load of the equipment.
- the reduction of the average roller pitch is increased, a large load may be transmitted to the drive system for supporting the roller and the bearing structure, and thus, the reduction of the roller pitch average may depend on the load that such equipment can withstand. This can be determined.
- the average of the roller pitch in any one section may be smaller than the average of the roller pitch in the preceding section, thereby alleviating the height variation of the molten surface in the mold.
- the average of the roller pitch in the following section may increase again.
- FIG. 5 is a diagram illustrating a relationship between a solidification length, a speed, and a thickness of a metal plate in an embodiment of the present invention.
- the length required to completely solidify the metal plate B may be shortened as the moving speed of the metal plate B is increased.
- the section in which the roller pitch average is smaller than the preceding section may exist within the length before the metal plate b completely solidifies, and thus the height difference from the molten surface in the mold before the metal plate B completely solidifies.
- the maximum length of the section in which the inverted section is formed in which the roller pitch average is smaller than the preceding section is equal to the length required for the metal plate B to solidify, and this length is the moving speed V of the metal plate B.
- Equation 2 Can be defined by Equation 2 as a function.
- L is the solidification completion length of the metal plate (mm)
- V is the progress rate per minute (mm / min) of the metal plate
- H is the thickness of the metal plate
- K is the solidification constant (mm / min 1/2 ) of 20 to 30.
- the molten surface in the mold as the average of the roller pitch which is the distance between the centers of two rollers adjacent in the advancing direction of the metal plate in one section, is arranged to be smaller than the roller pitch average in the preceding section. It is possible to mitigate the height fluctuations of, thereby moving the metal plate can be maintained at more than 4m / min.
- the transfer unit 30 the vertical section 100 is vertically connected to the outlet side of the mold 20, the horizontal section 300 connected to the subsequent process, and vertical It may be divided into a curved section 200 which is arranged to be curved between the section 100 and the horizontal section 300.
- At least one of the vertical section 100 and the curved section 200, the curved section 200, and the horizontal section 300 may be provided with an inflection section 400 that is bent at a different slope.
- the transfer unit 30 may be provided with at least one segment in the vertical section 100, neighboring the inflection section 400 disposed between the vertical section 100 and the curved section 200 in the advancing direction of the metal plate.
- the average of the roller pitches which is the distance between the centers of one or two rollers, may be arranged smaller than the average of the roller pitches in the preceding section.
- the average of the roller pitch may increase again.
- the transfer part 30 is described as being divided into a vertical section 100, a curved section 200, and a horizontal section 300, but the transfer section 30 may be formed of only the vertical section 100.
- the curved section 200 without the vertical section 100 is directly connected to the outlet of the mold 20, it is also possible to include a horizontal section (300).
- the inflection section 400 may not include a separate inflection section 400 when the inclination of the curved section is variable or the inclination of the curved section 200 is kept constant.
- a section in which the average of the roller pitches becomes smaller than the average of the roller pitches in the preceding section may be present two or more times, thereby increasing the degree of alleviating the height variation of the molten metal surface in the mold.
- the height fluctuation phenomenon of the molten surface in the mold 20 is intensified as the traveling speed of the metal plate B increases, and the longer the arrangement in which the roller pitch average of the roller increases constantly is repeated. Therefore, if the roller pitch average of the roller is constantly increased and the repeatability is minimized, the height fluctuation of the molten metal surface can be insensitive from the influence of the moving speed of the metal plate (B). If maintained at the same level as the result it can increase the speed of the metal plate (B).
- FIG. 6 is a graph showing the average of the roller pitch for each section of the solidification apparatus according to an embodiment of the present embodiment.
- the x axis represents a section and the y axis represents a roller average pitch.
- the roller pitch average of any one section is less than 10 mm relative to the roller pitch average of the preceding preceding section, and the roller pitch average of the following section is slightly increased, although When the sum of the reduction degree with the roller pitch average is 10 mm or more, the degree which alleviates the height fluctuation of the molten metal surface in a mold can be improved.
- the roller pitch average between D3 and D4 may decrease by 8 mm.
- the reduction degree of the roller pitch average between each section is less than 10mm, only the average reduction degree of the roller pitch between each adjacent section can not obtain a significant result of alleviating the height variation of the molten metal surface in the mold.
- the sum of the roller pitch average reduction between D1 and D4 may be 12 mm, which is a reduction degree of the roller pitch average of 10 mm or more as a whole, thereby alleviating the height variation of the molten metal surface in the mold.
- roller pitch average may be decreased in the preceding section (eg, the section between D1 and D4) and then increased again in the following section (eg, after the section D5).
Abstract
Description
Claims (15)
- 용융 금속으로부터 응고된 금속판을 제조하는 응고 장치로서,상기 금속판의 진행방향을 따라서 배치되는 롤러열을 포함하며상기 롤러열을 복수의 구간으로 구분하였을 때, 어느 한 구간에서 상기 금속판의 진행방향으로 이웃한 두 롤러의 중심간 거리인 롤러 피치의 평균이 선행 구간에서의 롤러 피치 평균보다 작은 응고 장치.
- 제1항에 있어서,상기 어느 한 구간에서의 롤러 피치의 평균이 후행 구간에서의 롤러 피치 평균보다 작은 응고장치.
- 제 1 항에 있어서,상기 구간은 상기 롤러 피치의 개수가 적어도 4개인 공간인 응고 장치.
- 제 1 항에 있어서,상기 구간은 1m 이상의 길이에 배치되는 롤러를 포함하여 구획되는 공간인 응고 장치.
- 제 1 항에 있어서,상기 구간은 물리적 구획으로 구분되는 응고 장치.
- 제 5 항에 있어서,상기 물리적 구획은 세그먼트 단위인 응고 장치.
- 제 1 항에 있어서,상기 구간은 한 구동롤과 다음 구동롤 사이의 공간인 응고 장치.
- 제 1 항 내지 제 7 항 중 어느 한 항에 있어서,상기 어느 한 구간에서 롤러 피치의 평균과 선행 구간에서의 롤러 피치 평균의 차이는 10mm 이상인 응고 장치.
- 제 8 항에 있어서,상기 롤러 피치 평균의 차이는 20mm 이상인 응고 장치.
- 제 8 항에 있어서,상기 금속판의 이동 속도는 4 m/min 이상인 응고 장치.
- 제 8 항에 있어서, 상기 구간은상기 금속판을 수평으로 이송하는 수평구간과,상기 용융 금속이 배출되는 출구와 상기 수평구간 사이에 소정의 곡률로 만곡되게 배치되는 만곡구간을 포함하고,상기 출구와 상기 만곡구간 또는 상기 만곡구간과 상기 수평구간 사이 중 적어도 하나에 제공되며 서로 다른 곡률로 배치되는 변곡구간을 포함하는 응고 장치.
- 제 11 항에 있어서,상기 출구와 수직하게 연결되어 상기 금속판을 수직으로 이송하며 상기 만곡구간과 연결되는 수직구간을 더 포함하는 응고 장치.
- 제 1 항 내지 제 7 항 중 어느 한 항에 있어서,상기 롤러 피치의 평균이 선행구간에서의 롤러 피치 평균보다 작아지는 구간이 2번 이상 존재하는 응고 장치.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN201680032448.9A CN107690362A (zh) | 2015-06-04 | 2016-06-07 | 凝固设备 |
US15/578,974 US20180133785A1 (en) | 2015-06-04 | 2016-06-07 | Solidification apparatus |
JP2017562589A JP2018516175A (ja) | 2015-06-04 | 2016-06-07 | 凝固装置 |
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KR1020150079173A KR101736574B1 (ko) | 2015-06-04 | 2015-06-04 | 응고 장치 |
KR10-2015-0079173 | 2015-06-04 |
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WO2016195454A1 true WO2016195454A1 (ko) | 2016-12-08 |
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PCT/KR2016/006000 WO2016195454A1 (ko) | 2015-06-04 | 2016-06-07 | 응고 장치 |
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US (1) | US20180133785A1 (ko) |
JP (1) | JP2018516175A (ko) |
KR (1) | KR101736574B1 (ko) |
CN (1) | CN107690362A (ko) |
WO (1) | WO2016195454A1 (ko) |
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CN101920316B (zh) * | 2010-08-03 | 2015-08-19 | 中国重型机械研究院有限公司 | 一种解决结晶器液面波动的连铸机改造方法 |
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- 2015-06-04 KR KR1020150079173A patent/KR101736574B1/ko active IP Right Grant
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2016
- 2016-06-07 US US15/578,974 patent/US20180133785A1/en not_active Abandoned
- 2016-06-07 WO PCT/KR2016/006000 patent/WO2016195454A1/ko active Application Filing
- 2016-06-07 CN CN201680032448.9A patent/CN107690362A/zh active Pending
- 2016-06-07 JP JP2017562589A patent/JP2018516175A/ja active Pending
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KR20080081173A (ko) * | 2006-01-11 | 2008-09-08 | 에스엠에스 데마그 악티엔게젤샤프트 | 연속 주조 방법 및 장치 |
KR20100087764A (ko) * | 2007-12-28 | 2010-08-05 | 에스엠에스 지마크 악티엔게젤샤프트 | 주조 스트랜드의 응고 상태를 측정하기 위한 장치를 포함하는 연속 주조 라인과 이를 위한 방법 |
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JP2014036975A (ja) * | 2012-08-14 | 2014-02-27 | Nippon Steel & Sumitomo Metal | 連続鋳造機の設定状態の検知装置および検知方法 |
Also Published As
Publication number | Publication date |
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CN107690362A (zh) | 2018-02-13 |
US20180133785A1 (en) | 2018-05-17 |
KR101736574B1 (ko) | 2017-05-17 |
JP2018516175A (ja) | 2018-06-21 |
KR20160143919A (ko) | 2016-12-15 |
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