WO2016004682A1 - 连铸坯凝固末端大压下的连铸机扇形段及其大压下方法 - Google Patents
连铸坯凝固末端大压下的连铸机扇形段及其大压下方法 Download PDFInfo
- 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
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- continuous casting
- driven roller
- driving roller
- pressing
- roller
- Prior art date
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Classifications
-
- 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
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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
- B22D11/1206—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
- 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
Description
Claims (5)
- 一种连铸坯凝固末端大压下的连铸机扇形段,包括位于连铸机扇形段上的上框架、下框架、上驱动辊、下驱动辊、左从动辊组、右从动辊组、压下装置以及夹紧缸,其特征在于,所述夹紧缸用于夹紧上框架与下框架保持设定间隔;所述上驱动辊与压下装置相连,所述上驱动辊通过上轴承座连接于上框架上,所述下驱动辊通过下轴承座连接于下框架上,所述左从动辊组以及右从动辊组分别位于驱动辊的两侧,所述左从动辊组用于夹紧压下前的铸坯,所述右从动辊组用于夹紧压下后的铸坯,所述驱动辊的直径与从动辊的直径之比为1.1:1~2:1。
- 根据权利要求1所述的连铸坯凝固末端大压下的连铸机扇形段,其特征在于,所述右从动辊组和驱动辊的开口度与压下后的铸坯厚度相同。
- 根据权利要求2所述的连铸坯凝固末端大压下的连铸机扇形段,其特征在于,所述左从动辊组的开口度与压下前的铸坯厚度相同。
- 根据权利要求3所述的连铸坯凝固末端大压下的连铸机扇形段,其特征在于,所述驱动辊为整体式,采用一体成形工艺制成。
- 一种连铸坯凝固末端大压下方法,其特征在于,包括以下步骤:(1)夹紧缸施加一定压力于上框架上,使左从动辊组的开口度与压下前的铸坯厚度相同,并用于夹紧压下前的铸坯;(2)设定压下量5~20mm,通过压下装置带动驱动辊对铸坯进行大压下变形;(3)调整右从动辊组使其开口度与上下驱动辊之间的间距相同,用于夹紧压下后的铸坯。
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 |
EP14897138.5A EP3167974B8 (en) | 2014-07-09 | 2014-09-25 | Sector shaped section continuous casting machine for heavy reduction and corresponding heavy reduction method |
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 |
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 |
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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 |
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WO2016004682A1 true WO2016004682A1 (zh) | 2016-01-14 |
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PCT/CN2014/087369 WO2016004682A1 (zh) | 2014-07-09 | 2014-09-25 | 连铸坯凝固末端大压下的连铸机扇形段及其大压下方法 |
Country Status (6)
Country | Link |
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US (1) | US20170113266A1 (zh) |
EP (1) | EP3167974B8 (zh) |
JP (1) | JP6541043B2 (zh) |
KR (1) | KR20170021872A (zh) |
CN (1) | CN104057049B (zh) |
WO (1) | WO2016004682A1 (zh) |
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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*** |
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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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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*** |
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*** |
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EP3167974B8 (en) | 2020-04-08 |
EP3167974B1 (en) | 2020-01-22 |
CN104057049A (zh) | 2014-09-24 |
CN104057049B (zh) | 2016-06-15 |
JP6541043B2 (ja) | 2019-07-10 |
JP2017532202A (ja) | 2017-11-02 |
US20170113266A1 (en) | 2017-04-27 |
EP3167974A4 (en) | 2018-04-25 |
KR20170021872A (ko) | 2017-02-28 |
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