WO2016004682A1 - Section de secteur de machine de coulée continue pour pressage profond de queue de solidification d'ébauche de coulée continue et procédé de pressage profond pour queue de solidification d'ébauche de coulée continue - Google Patents

Section de secteur de machine de coulée continue pour pressage profond de queue de solidification d'ébauche de coulée continue et procédé de pressage profond pour queue de solidification d'ébauche de coulée continue Download PDF

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Publication number
WO2016004682A1
WO2016004682A1 PCT/CN2014/087369 CN2014087369W WO2016004682A1 WO 2016004682 A1 WO2016004682 A1 WO 2016004682A1 CN 2014087369 W CN2014087369 W CN 2014087369W WO 2016004682 A1 WO2016004682 A1 WO 2016004682A1
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WO
WIPO (PCT)
Prior art keywords
continuous casting
driven roller
driving roller
pressing
roller
Prior art date
Application number
PCT/CN2014/087369
Other languages
English (en)
Chinese (zh)
Inventor
康永林
王新华
朱国明
麻晗
马建超
曲锦波
宇航
张志军
姜敏
许志刚
Original Assignee
北京科技大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京科技大学 filed Critical 北京科技大学
Priority to KR1020177002175A priority Critical patent/KR20170021872A/ko
Priority to JP2017501264A priority patent/JP6541043B2/ja
Priority to EP14897138.5A priority patent/EP3167974B8/fr
Publication of WO2016004682A1 publication Critical patent/WO2016004682A1/fr
Priority to US15/401,325 priority patent/US20170113266A1/en

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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
    • 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
    • B22D11/1284—Horizontal 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
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use

Definitions

  • the invention relates to the technical field of slab casting, in particular to a continuous casting machine segment of a continuous casting billet having a large solidification end and a large pressing method thereof.
  • the large-pressing technology of the solidification end of continuous casting slab is to set the pressing roller on the solidification end of the continuous casting slab in the continuous casting production line.
  • the solid phase ratio of the casting blank reaches 80% or more, the casting blank is subjected to large reduction deformation ( 5 to 20 mm), followed by normal rolling production.
  • This technology can significantly improve the center quality of continuous casting slab (improve low-fold structure, shrinkage, porosity, segregation, etc.), and can produce high-quality thicker than 100mm at a lower compression ratio (1.5 ⁇ 2.5). Thick plate products.
  • the contact area of the 5 to 7 pairs of the casting machine rolls simultaneously contacting the casting blank is significantly increased, so that the load is also It will increase significantly, so the strength and rigidity of the segment must be greatly increased to resist the strong load and large elastic deformation of the segment and the segment roller (or the casting machine roller).
  • the segment roller is made of roller ring and core. The shaft and the intermediate support bearing block, which will increase the size and weight of the segment, which will bring a series of new problems such as the lifting and maintenance of the segment, and the large pressing is at the solidification end of the continuous casting blank.
  • the technical problem to be solved by the present invention is to provide a continuous casting machine fan under the large pressing end of the solidification end of the continuous casting billet
  • the segment and its large pressing method are used to solve the problem that the strength and rigidity of the fan-shaped section of the continuous casting machine and the driving roller are seriously insufficient when the original continuous casting machine system is used in the prior art.
  • an embodiment of the present invention provides a continuous casting machine segment of a continuous casting billet having a large solidification end, including an upper frame, a lower frame, an upper driving roller, and a lower driving on the continuous casting machine segment.
  • the upper driving roller and the pressing device Connected, the upper driving roller is coupled to the upper frame through an upper bearing housing, and the lower driving roller is coupled to the lower frame through a lower bearing housing, the left driven roller group and the right driven roller group being respectively located at the driving roller
  • the left driven roller set is used for clamping the slab before pressing
  • the right driven roller set is used for clamping the pressed slab
  • the diameter of the driving roller and the driven roller The ratio of diameters is from 1.1:1 to 2:1.
  • the opening degree of the right driven roller set and the driving roller is the same as the thickness of the cast slab after pressing.
  • the opening degree of the left driven roller group is the same as the thickness of the casting blank before pressing.
  • the driving roller is a unitary type and is formed by an integral forming process.
  • the present invention also provides a method for solidification end of a continuous casting billet, comprising the following steps:
  • the clamping cylinder applies a certain pressure to the upper frame, so that the opening degree of the left driven roller group is the same as the thickness of the casting blank before pressing, and is used for clamping the casting blank before pressing;
  • the right driven roller set is adjusted so that the opening degree thereof is the same as the distance between the upper and lower driving rollers, and is used for clamping the cast slab after being pressed.
  • the invention adopts a large roller diameter integral driving roller and an upper frame, a lower frame with high strength and high rigidity, and a clamping cylinder with a large carrying capacity; the total deformation amount under large pressing is driven by a large roller diameter.
  • the roller performs large reduction deformation on the continuous casting billet, instead of 5 to 7 pairs of the casting machine rolls, which are usually deformed one by one to complete the total deformation amount under large pressure.
  • the deformation permeability is increased, which is equivalent to the deformation of one rolling pass of the two-roll mill with larger roll diameter, which is more conducive to the improvement of looseness and segregation in the central region of the continuous casting blank.
  • Figure 1 is a front elevational view of a continuous casting machine segment of a continuous casting billet at a solidified end;
  • Figure 2 is a side elevational view of the continuous casting machine segment of the continuous casting billet at the solidification end of the embodiment of the present invention
  • Fig. 3 is a schematic view showing the principle of the large reduction method of the segment of the continuous casting machine under the large solidification end of the continuous casting slab according to the embodiment of the present invention.
  • the invention is directed to the prior art, in the soft reduction system using the original continuous casting machine, when the solidification end of the segment is pressed, the strength and rigidity of the fan-shaped section of the continuous casting machine and the driving roller are seriously insufficient, and In the case that the bearing capacity of the clamping cylinder is insufficient, it is difficult to carry out the large pressing of the solidification end, and the intermediate crack of the casting blank is prone to occur, and a continuous casting machine segment and a large pressing method for the continuous solidification end of the continuous casting billet are provided.
  • a continuous casting machine segment of a continuous casting billet having a large solidification end comprising an upper frame 2 and a lower frame 7 on a continuous casting machine segment.
  • Upper drive roller 3, lower drive roller 5, left driven roller set 8, right driven roller set 9, depressing device 1 and clamping cylinder 10 for clamping upper frame 2 and lower frame 7 maintaining the set interval, the driving roller and the driven roller are rotated by the transmission device 11 to drive the casting blank forward; the upper driving roller 3 is connected to the pressing device 1, and the upper driving roller 3 passes
  • the upper bearing block 4 is coupled to the upper frame 2
  • the lower drive roller 5 is coupled to the lower frame 7 via the lower bearing block 6, the left driven roller set 8 and the right driven roller set 9 being respectively located at the drive roller
  • the left driven roller set 8 is used for clamping the slab before pressing
  • the right driven roller set 9 is used for clamping the pressed slab
  • the ratio of diameters is from 1.1:1 to 2:1.
  • the opening degree of the right driven roller group 9 and the driving roller is the same as the thickness of the cast slab after the pressing.
  • the opening degree of the left driven roller group 8 is the same as the thickness of the slab before the pressing.
  • the driving roller is of a unitary type and is formed by an integral forming process.
  • the present invention also provides a method for solidifying the solidification end of a continuous casting billet, comprising the following steps:
  • the clamping cylinder applies a certain pressure to the upper frame 2, so that the opening degree of the left driven roller group 8 is the same as the thickness of the casting blank before pressing, and is used for clamping the casting blank before pressing;
  • the right driven roller group 9 is adjusted so that the opening degree thereof is the same as the distance between the upper and lower driving rollers, and is used for clamping the cast slab after being pressed. This makes it possible to carry out the press-down deformation only by the large-diameter integrated drive roller 3, and the right-side driven roller 9 on the outlet side does not bear the deformation of the press, which is similar to the rolling deformation of the cast strand by the two-roll mill.
  • the driving roller of the present invention is a large roller diameter integral driving roller (ie, a sectional roller which is not composed of a roller ring, a mandrel and an intermediate supporting bearing seat), and considers an increase in load when a large pressing is performed, and the segment is improved.
  • the strength and rigidity of the upper frame 2 and the lower frame 7 (the amount of increase is 2 to 5 times), and the bearing capacity of the four clamping cylinders 10 is increased correspondingly (the amount of increase is 2 to 5 times).
  • the invention adopts a large roller diameter integral driving roller and an upper frame, a lower frame with high strength and high rigidity, and a clamping cylinder with a large carrying capacity; the total deformation amount under large pressing is driven by a large roller diameter.
  • the roller performs large reduction deformation on the continuous casting billet, instead of 5 to 7 pairs of the casting machine rolls, which are usually deformed one by one to complete the total deformation amount under large pressure.
  • the deformation permeability is increased, which is equivalent to the deformation of one rolling pass of the two-roll mill with larger roll diameter, which is more conducive to the improvement of looseness and segregation in the central region of the continuous casting blank.

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

Abstract

La présente invention concerne une section de secteur de machine de coulée continue pour pressage profond de queue de solidification d'ébauche de coulée continue. La section de secteur de machine de coulée continue comprend un cadre supérieur (2), un cadre inférieur (7), un rouleau d'entraînement supérieur (3), un rouleau d'entraînement inférieur (5), un ensemble de rouleaux entraînés vers la gauche (8), un ensemble de rouleaux entraînés vers la droite (9), un dispositif de pressage (1), et un cylindre de serrage (1), tous disposés sur la section de secteur. Le cylindre de serrage est utilisé pour serrer le cadre supérieur et le cadre inférieur de façon à ce qu'ils soient maintenus à une certaine distance réglée. Le rouleau d'entraînement supérieur est relié à l'appareil de pressage. Le rouleau d'entraînement supérieur est relié au cadre supérieur au moyen d'une base de palier (4). Le rouleau d'entraînement inférieur est relié au cadre inférieur au moyen d'une base de palier (6). L'ensemble de rouleaux entraînés vers la gauche et l'ensemble de rouleaux entraînés vers la droite sont respectivement situés sur deux côtés des rouleaux d'entraînement. L'ensemble de rouleaux entraînés vers la gauche est utilisé pour serrer une ébauche de coulée avant le pressage. L'ensemble de rouleaux entraînés vers la droite est utilisé pour serrer l'ébauche de coulée après le pressage. Le rapport du diamètre de chaque rouleau d'entraînement sur le diamètre de chaque rouleau entraîné est de 1,1:1 à 2:1. La présente invention concerne également un procédé de pressage profond de queue de solidification d'ébauche de coulée continue. La section de secteur de machine de coulée continue et le procédé de pressage profond de queue de solidification d'ébauche de coulée continue améliorent la perméabilité en déformation de l'ébauche de coulée continue et aident à atténuer le desserrage et la ségrégation dans une zone centrale.
PCT/CN2014/087369 2014-07-09 2014-09-25 Section de secteur de machine de coulée continue pour pressage profond de queue de solidification d'ébauche de coulée continue et procédé de pressage profond pour queue de solidification d'ébauche de coulée continue WO2016004682A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020177002175A KR20170021872A (ko) 2014-07-09 2014-09-25 연속 캐스팅 블랭크 응고 말단이 중가압하는 연속 주조기 선형단 및 그 중가압 방법
JP2017501264A JP6541043B2 (ja) 2014-07-09 2014-09-25 連続鋳造スラブ凝固端に位置する高圧圧下装置及びその高圧圧下方法
EP14897138.5A EP3167974B8 (fr) 2014-07-09 2014-09-25 Machine de coulée continue à segments pour réduction forte et procédé correspondant
US15/401,325 US20170113266A1 (en) 2014-07-09 2017-01-09 Sector-shaped section of continuous casting machine for heavy reduction of solidified terminal of continuously cast slab and heavy reduction method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410325414.1 2014-07-09
CN201410325414.1A CN104057049B (zh) 2014-07-09 2014-07-09 连铸坯凝固末端大压下的连铸机扇形段及其大压下方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/401,325 Continuation US20170113266A1 (en) 2014-07-09 2017-01-09 Sector-shaped section of continuous casting machine for heavy reduction of solidified terminal of continuously cast slab and heavy reduction method thereof

Publications (1)

Publication Number Publication Date
WO2016004682A1 true WO2016004682A1 (fr) 2016-01-14

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PCT/CN2014/087369 WO2016004682A1 (fr) 2014-07-09 2014-09-25 Section de secteur de machine de coulée continue pour pressage profond de queue de solidification d'ébauche de coulée continue et procédé de pressage profond pour queue de solidification d'ébauche de coulée continue

Country Status (6)

Country Link
US (1) US20170113266A1 (fr)
EP (1) EP3167974B8 (fr)
JP (1) JP6541043B2 (fr)
KR (1) KR20170021872A (fr)
CN (1) CN104057049B (fr)
WO (1) WO2016004682A1 (fr)

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CN113600775A (zh) * 2021-08-26 2021-11-05 新疆八一钢铁股份有限公司 板坯连铸机滞坯快速处理方法
CN115090840A (zh) * 2022-06-28 2022-09-23 武汉钢铁有限公司 连铸机扇形段安装基座形变在线监测及超差判定系统

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CN104057049B (zh) * 2014-07-09 2016-06-15 北京科技大学 连铸坯凝固末端大压下的连铸机扇形段及其大压下方法
CN105689664B (zh) * 2014-11-27 2017-11-28 宝钢工程技术集团有限公司 用于改善板坯疏松缩孔缺陷的重压下扇形段及其使用方法
CN106141127A (zh) * 2015-04-17 2016-11-23 宝钢工程技术集团有限公司 重压下连铸生产方法
CN104858383A (zh) * 2015-06-10 2015-08-26 中冶连铸技术工程有限责任公司 一种用于板坯重压下的扇形段
CN106552912A (zh) * 2016-11-28 2017-04-05 东北大学 一种连铸凝固末端重压下用增强型紧凑扇形段
CN106623834B (zh) * 2016-12-22 2019-04-05 中冶京诚工程技术有限公司 连铸板坯重压下的扇形段装置
CN109926554A (zh) * 2017-12-19 2019-06-25 宝钢工程技术集团有限公司 一种改善与消除板坯内部疏松的扇形段及其使用方法
CN108788041B (zh) * 2018-07-03 2020-01-03 东北大学 一种连铸凝固末端重压下用扇形段辊列结构及使用方法
CN109261922B (zh) * 2018-10-26 2020-11-06 中国重型机械研究院股份公司 一种凝固末端大压下连铸机的生产铸坯工艺
CN109434056A (zh) * 2018-12-05 2019-03-08 东北大学 一种连铸坯凝固末端双单点重压下工艺
CN109465415A (zh) * 2018-12-07 2019-03-15 东北大学 一种连铸凝固末端双单点重压下扇形段辊列结构
CN110181016B (zh) * 2019-05-27 2024-03-29 北京首钢国际工程技术有限公司 一种2+8辊组合式厚板坯大压下铸轧机
CN110227806B (zh) * 2019-05-27 2024-05-14 北京首钢国际工程技术有限公司 一种铸轧式连铸机凝固末端大压下装置
CN113843400A (zh) 2020-06-25 2021-12-28 宝山钢铁股份有限公司 一种提升铸坯质量的板坯冷却与压下方法
CN116422852B (zh) * 2023-06-12 2023-11-17 中国重型机械研究院股份公司 一种特厚板连铸七辊大压下扇形段控制模型

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CN115090840B (zh) * 2022-06-28 2023-06-16 武汉钢铁有限公司 连铸机扇形段安装基座形变在线监测及超差判定系统

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US20170113266A1 (en) 2017-04-27
EP3167974A4 (fr) 2018-04-25
JP2017532202A (ja) 2017-11-02
KR20170021872A (ko) 2017-02-28
EP3167974B1 (fr) 2020-01-22
JP6541043B2 (ja) 2019-07-10
CN104057049A (zh) 2014-09-24
EP3167974B8 (fr) 2020-04-08
CN104057049B (zh) 2016-06-15
EP3167974A1 (fr) 2017-05-17

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