WO2024119583A1 - Segment comprising electromagnetic stirring device for thin slab - Google Patents
Segment comprising electromagnetic stirring device for thin slab Download PDFInfo
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- WO2024119583A1 WO2024119583A1 PCT/CN2023/070915 CN2023070915W WO2024119583A1 WO 2024119583 A1 WO2024119583 A1 WO 2024119583A1 CN 2023070915 W CN2023070915 W CN 2023070915W WO 2024119583 A1 WO2024119583 A1 WO 2024119583A1
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- 238000003756 stirring Methods 0.000 title claims abstract description 95
- 238000005266 casting Methods 0.000 claims abstract description 26
- 230000005672 electromagnetic field Effects 0.000 claims description 13
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 7
- 238000009749 continuous casting Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 2
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
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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
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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
- B22D11/16—Controlling or regulating processes or operations
Definitions
- the invention belongs to the field of continuous casting metallurgy, and in particular relates to a fan-shaped segment of a thin slab with an electromagnetic stirring device.
- CSP continuous casting and rolling technology is in a bottleneck period. Although the production cost is low, it can only produce low grade non-oriented silicon steel, and there is no price advantage. As a result, several domestic CSP production lines are in an unsaturated state.
- the object of the present invention is to provide a fan-shaped segment of an electromagnetic stirring device for a thin slab to solve the problem of corrugated defects in medium and high grade non-oriented silicon steel.
- a fan-shaped segment for a thin slab with an electromagnetic stirring device comprising a fan-shaped segment body, the fan-shaped segment body comprising a first frame and a second frame arranged opposite to each other, and a casting channel is provided between the first frame and the second frame;
- the sector body comprises a first electromagnetic stirring section at the inlet, a third electromagnetic stirring section at the outlet and a second electromagnetic stirring section between the first electromagnetic stirring section and the third electromagnetic stirring section, at least one set of free rollers are arranged on both sides of the active channel for casting between the first electromagnetic stirring section and the second electromagnetic stirring section, and at least one set of free rollers are arranged on both sides of the active channel for casting between the second electromagnetic stirring section and the third electromagnetic stirring section;
- the first electromagnetic stirring section comprises a first electromagnetic stirrer arranged on the second frame, a non-magnetic roller is arranged on one side of the active channel of the casting blank in the first electromagnetic stirring section, and a free roller is arranged on the other side, and the non-magnetic roller and the first electromagnetic stirrer are arranged on the same frame;
- the second electromagnetic stirring section comprises second electromagnetic stirrers arranged on both sides of the active channel of the casting blank in the second electromagnetic stirring section, wherein the second electromagnetic stirrer is a roller-shaped structure consistent with the shape of the free roller;
- the third electromagnetic stirring section includes third electromagnetic stirrers arranged on both sides of the active channel of the casting blank in the third electromagnetic stirring section, and the third electromagnetic stirrer is a roller-shaped structure consistent with the shape of the free roller.
- the ingot enters the first electromagnetic stirring section from the active channel, and the first electromagnetic stirrer arranged in the first electromagnetic stirring section is installed on one side.
- the first electromagnetic stirrer and the non-magnetic roller and free roller matched therewith play an initial stirring role for the molten steel entering the fan-shaped area.
- the ingot enters the second electromagnetic stirring section.
- the second electromagnetic stirrer arranged in the second electromagnetic stirring section requires a smaller electromagnetic field and plays an auxiliary stirring role.
- the ingot comes to the third electromagnetic stirring section.
- the third electromagnetic stirrer arranged in the third electromagnetic stirring section plays the main stirring role, so a very large electromagnetic intensity is required to break up the dendrites and form equiaxed crystals.
- the fan-shaped section of the present invention forms equiaxed crystals by triple stirring of the ingot to solve the quality defects of high-grade non-oriented silicon steel corrugations in CSP production.
- the electromagnetic field X applied by the first electromagnetic stirrer to the center of the ingot is ⁇ 600Gs; the electromagnetic field X applied by the second electromagnetic stirring section to the center of the ingot is ⁇ 800Gs; and the electromagnetic field X applied by the third electromagnetic stirrer to the center of the ingot is ⁇ 1200Gs.
- the roller diameter of the second electromagnetic agitator is 130-160 mm; the roller diameter of the third electromagnetic agitator is 160-200 mm; the non-magnetic roller is made of non-magnetic material and plays a role in supporting the ingot, and generally uses a closely spaced roller with a roller diameter of 90-110 mm.
- the effective coverage area S of the electromagnetic field of the first electromagnetic stirring section is at least:
- K is the cross-sectional width of the ingot
- H is the length of the ingot active channel within the first electromagnetic stirring section
- the value range of H is H ⁇ 600mm.
- the free rollers on both sides of the active channel of the casting are symmetrically arranged; the non-magnetic roller and the free roller of the first electromagnetic stirring section are symmetrically arranged; the second electromagnetic stirrer is symmetrically arranged; and the third electromagnetic stirrer is symmetrically arranged.
- the fan-shaped segment of the electromagnetic stirring device for thin slabs of the present invention has the following advantages: the casting is subjected to triple electromagnetic stirring by electromagnetic stirring segments of three different modes to form equiaxed crystals, thereby solving the quality defects of high-grade non-oriented silicon steel corrugations in CSP production.
- FIG1 is a schematic diagram of the structure of a sector body of the present invention.
- FIG. 2 is a schematic diagram of the cross-sectional structure of a sector body of the present invention.
- a fan-shaped segment for a thin slab with an electromagnetic stirring device in this embodiment is mainly used in CSP high-speed continuous casting and rolling technology, and the pulling speed generally reaches 3-9 m/min, and is installed at the outlet of the crystallizer, and is mainly used for the production of medium and high-grade non-oriented silicon steel.
- the fan-shaped segment includes a fan-shaped segment body 11, and the fan-shaped segment body 11 includes a first frame 3 and a second frame 10 arranged oppositely.
- the first frame 3 is an inner frame of the fan-shaped segment
- the second frame 10 is an outer frame of the fan-shaped segment.
- Between the first frame 3 and the second frame 10 is a movable channel for the casting slab 1.
- the fan-shaped segment body 11 includes a first electromagnetic stirring segment 12 located at the entrance, a third electromagnetic stirring segment 14 located at the exit, and a second electromagnetic stirring segment 13 located between the first electromagnetic stirring segment 12 and the third electromagnetic stirring segment 14. At least one group of free rollers 6 are provided on both sides of the active channel for casting between the first electromagnetic stirring segment 12 and the second electromagnetic stirring segment 13, and at least one group of free rollers 6 are provided on both sides of the active channel for casting between the second electromagnetic stirring segment 13 and the third electromagnetic stirring segment 14. The free rollers 6 on both sides of the active channel for casting are symmetrically arranged.
- the first electromagnetic stirring section 12 includes a first electromagnetic stirrer 9 disposed on a second frame 10, a non-magnetic roller 2 is disposed on one side of the active channel of the casting in the first electromagnetic stirring section 12, and a free roller 6 is disposed on the other side, and the non-magnetic roller 2 and the first electromagnetic stirrer 9 are disposed on the same frame.
- the non-magnetic roller 2 is made of non-magnetic material, generally a closely spaced roller, and the roller diameter of the non-magnetic roller 2 is 90-110 mm.
- the non-magnetic roller 2 and the free roller 6 of the first electromagnetic stirring section 12 are symmetrically disposed.
- the electromagnetic field X of the first electromagnetic stirrer 9 acting on the center of the casting slab 1 is ⁇ 600 Gs.
- the effective coverage area S of the electromagnetic field of the first electromagnetic stirring section 12 is at least:
- K is the cross-sectional width of the ingot 1.
- H is the length of the ingot moving channel within the first electromagnetic stirring section 12, and the value range of H is H ⁇ 600 mm.
- the second electromagnetic stirring section 13 includes a second electromagnetic stirrer 15 arranged on both sides of the active channel of the ingot in the second electromagnetic stirring section 13, and the second electromagnetic stirrer 15 is symmetrically arranged.
- the second electromagnetic stirrer 15 includes a second electromagnetic stirrer 4 on the outer arc side and a second electromagnetic stirrer 5 on the inner arc side.
- the second electromagnetic stirrer 15 is a roller-shaped structure consistent with the shape of the free roller 6, and the roller diameter of the second electromagnetic stirrer 15 is 130-160mm.
- the electromagnetic field X of the second electromagnetic stirring section 13 acting on the center of the ingot 1 is ⁇ 800Gs.
- the third electromagnetic stirring section 14 includes a third electromagnetic stirrer 16 arranged on both sides of the active channel of the ingot in the third electromagnetic stirring section 14, and the third electromagnetic stirrer 16 is symmetrically arranged.
- the third electromagnetic stirrer 16 includes a third electromagnetic stirrer 7 on the outer arc side and a third electromagnetic stirrer 8 on the inner arc side.
- the third electromagnetic stirrer 16 is a roller-shaped structure consistent with the shape of the free roller 6, and the roller diameter of the third electromagnetic stirrer 16 is 160-200mm.
- the electromagnetic field X of the third electromagnetic stirrer 16 acting on the center of the ingot 1 is ⁇ 1200Gs.
- the fan-shaped segment with electromagnetic stirring device for thin slab provided by the present invention can solve the quality problem of current CSP continuous casting slab, and the equiaxed grain of the casting slab can reach more than 50%, solving the problem of high-end non-oriented silicon steel in CSP production.
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Abstract
A segment comprising an electromagnetic stirring device for a thin slab. The segment comprises a first electromagnetic stirring section (12), a second electromagnetic stirring section (13), and a third electromagnetic stirring section (14). The first electromagnetic stirring section (12) comprises a first electromagnetic stirrer (9), and non-magnetic rollers (2) and free rollers (6) that work in conjunction with the first electromagnetic stirrer, and the non-magnetic rollers (2) and the first electromagnetic stirrer (9) are arranged on the same frame. The second electromagnetic stirring section (13) comprises second electromagnetic stirrers (15) arranged on both sides of a casting blank movement channel in the second electromagnetic stirring section (13). The third electromagnetic stirring section (14) comprises third electromagnetic stirrers (16) arranged on both sides of the casting blank movement channel in the third electromagnetic stirring section (14). Triple electromagnetic stirring is performed on a casting blank (1) by three different modes of electromagnetic stirring sections to form equiaxed grains, thereby overcoming the quality defect of corrugation in medium and high grade non-oriented silicon steel.
Description
本发明属于连铸冶金领域，尤其涉及一种用于薄板坯带电磁搅拌装置的扇形段。The invention belongs to the field of continuous casting metallurgy, and in particular relates to a fan-shaped segment of a thin slab with an electromagnetic stirring device.
传统炼钢通常采用铸造与轧钢分开的形式，但这种方式能耗十分高，既不经济也不环保。基于此，便出现了连铸连轧的炼钢方式，也就是CSP连铸连轧技术，这种技术相对传统的炼钢技术，能耗可以减少20％以上，但是铸坯的厚度一般为50-90mm，当拉速很快时，将会导致铸坯内部质量的缺陷，尤其是生产无取向硅钢时，柱状晶非常发达，等轴晶几乎为零。对于中高牌号无取向硅钢，由于等轴晶的缺少，便产生了无取向硅钢成品卷的瓦楞缺陷。Traditional steelmaking usually adopts the form of separate casting and rolling, but this method has high energy consumption, which is neither economical nor environmentally friendly. Based on this, the continuous casting and rolling steelmaking method, namely CSP continuous casting and rolling technology, has emerged. Compared with traditional steelmaking technology, this technology can reduce energy consumption by more than 20%, but the thickness of the ingot is generally 50-90mm. When the pulling speed is very fast, it will cause defects in the internal quality of the ingot, especially when producing non-oriented silicon steel, columnar crystals are very developed and equiaxed crystals are almost zero. For medium and high-grade non-oriented silicon steel, due to the lack of equiaxed crystals, corrugated defects are produced in the finished coils of non-oriented silicon steel.
由于中高牌号无取向硅钢的瓦楞缺陷问题得不到解决，CSP连铸连轧技术处于瓶颈期，虽然生产成本低，但是也只能生产低牌号无取向硅钢，价格没有优势，导致国内几家CSP生产线都处于不饱和状态。As the corrugated defect problem of medium and high grade non-oriented silicon steel has not been solved, CSP continuous casting and rolling technology is in a bottleneck period. Although the production cost is low, it can only produce low grade non-oriented silicon steel, and there is no price advantage. As a result, several domestic CSP production lines are in an unsaturated state.
发明内容Summary of the invention
本发明目的在于提供一种用于薄板坯带电磁搅拌装置的扇形段，以解决中高牌号无取向硅钢的瓦楞缺陷问题。The object of the present invention is to provide a fan-shaped segment of an electromagnetic stirring device for a thin slab to solve the problem of corrugated defects in medium and high grade non-oriented silicon steel.
为解决上述技术问题，本发明的具体技术方案如下：In order to solve the above technical problems, the specific technical solutions of the present invention are as follows:
一种用于薄板坯带电磁搅拌装置的扇形段，该扇形段包括扇形段本体，所述扇形段本体包括相对设置的第一框架和第二框架，所述第一框架和第二框架之间为铸坯活动通道；A fan-shaped segment for a thin slab with an electromagnetic stirring device, the fan-shaped segment comprising a fan-shaped segment body, the fan-shaped segment body comprising a first frame and a second frame arranged opposite to each other, and a casting channel is provided between the first frame and the second frame;
所述扇形段本体包括位于入口处的第一电磁搅拌段，位于出口处的第三电磁搅拌段和位于所述第一电磁搅拌段和第三电磁搅拌段之间的第二电磁搅拌段，所述第一电磁搅拌段和第二电磁搅拌段之间的铸坯活动通道两侧设有至少一组自由辊，所述第二电磁搅拌段和第三电磁搅拌段之间的铸坯活动通道两侧设有至少一组自由辊；The sector body comprises a first electromagnetic stirring section at the inlet, a third electromagnetic stirring section at the outlet and a second electromagnetic stirring section between the first electromagnetic stirring section and the third electromagnetic stirring section, at least one set of free rollers are arranged on both sides of the active channel for casting between the first electromagnetic stirring section and the second electromagnetic stirring section, and at least one set of free rollers are arranged on both sides of the active channel for casting between the second electromagnetic stirring section and the third electromagnetic stirring section;
所述第一电磁搅拌段包括设置在第二框架上的第一电磁搅拌器，所述第一电磁搅拌段内的铸坯活动通道一侧设置无磁辊，另一侧设置自由辊，所述无磁辊与第一电磁搅拌器设置在同一框架上；The first electromagnetic stirring section comprises a first electromagnetic stirrer arranged on the second frame, a non-magnetic roller is arranged on one side of the active channel of the casting blank in the first electromagnetic stirring section, and a free roller is arranged on the other side, and the non-magnetic roller and the first electromagnetic stirrer are arranged on the same frame;
第二电磁搅拌段包括设置在第二电磁搅拌段内铸坯活动通道两侧的第二电磁搅拌器，所述第二电磁搅拌器为与所述自由辊形状一致的辊状结构；The second electromagnetic stirring section comprises second electromagnetic stirrers arranged on both sides of the active channel of the casting blank in the second electromagnetic stirring section, wherein the second electromagnetic stirrer is a roller-shaped structure consistent with the shape of the free roller;
第三电磁搅拌段包括设置在第三电磁搅拌段内铸坯活动通道两侧的第三电磁搅拌器，所述第三电磁搅拌器为与所述自由辊形状一致的辊状结构。The third electromagnetic stirring section includes third electromagnetic stirrers arranged on both sides of the active channel of the casting blank in the third electromagnetic stirring section, and the third electromagnetic stirrer is a roller-shaped structure consistent with the shape of the free roller.
由此，铸坯从活动通道进入第一电磁搅拌段，设置在第一电磁搅拌段内的第一电磁搅拌器采用单侧安装的形式，所述第一电磁搅拌器及与之配合的无磁辊和自由辊对进入扇形区域的钢液起到初始搅拌作用。随后铸坯进入第二电磁搅拌段，设置在第二电磁搅拌段内的第二电磁搅拌器要求的电磁场较小，起到辅助搅拌的作用。最后铸坯来到第三电磁搅拌段，设置在第三电磁搅拌段内的第三电磁搅拌器起到主要搅拌的作用，因此需要非常大的电磁强度，用于打碎枝晶，形成等轴晶。本发明的扇形段通过对铸坯的三重搅拌，形成等轴晶，以解决CSP生产中高牌号无取向硅钢瓦楞质量缺陷。Thus, the ingot enters the first electromagnetic stirring section from the active channel, and the first electromagnetic stirrer arranged in the first electromagnetic stirring section is installed on one side. The first electromagnetic stirrer and the non-magnetic roller and free roller matched therewith play an initial stirring role for the molten steel entering the fan-shaped area. Then the ingot enters the second electromagnetic stirring section. The second electromagnetic stirrer arranged in the second electromagnetic stirring section requires a smaller electromagnetic field and plays an auxiliary stirring role. Finally, the ingot comes to the third electromagnetic stirring section. The third electromagnetic stirrer arranged in the third electromagnetic stirring section plays the main stirring role, so a very large electromagnetic intensity is required to break up the dendrites and form equiaxed crystals. The fan-shaped section of the present invention forms equiaxed crystals by triple stirring of the ingot to solve the quality defects of high-grade non-oriented silicon steel corrugations in CSP production.
进一步，所述第一电磁搅拌器作用到铸坯中心的电磁场X≥600Gs；所述第二电磁搅拌段作用到铸坯中心的电磁场X≤800Gs；所述第三电磁搅拌器作用到铸坯中心的电磁场X≥1200Gs。Furthermore, the electromagnetic field X applied by the first electromagnetic stirrer to the center of the ingot is ≥600Gs; the electromagnetic field X applied by the second electromagnetic stirring section to the center of the ingot is ≤800Gs; and the electromagnetic field X applied by the third electromagnetic stirrer to the center of the ingot is ≥1200Gs.
进一步，所述第二电磁搅拌器的辊径为130-160mm；所述第三电磁搅拌器的辊径为160-200mm；所述无磁辊为非磁性材料，起到支撑铸坯的作用，一般采用密排辊，其辊径为90-110mm。Furthermore, the roller diameter of the second electromagnetic agitator is 130-160 mm; the roller diameter of the third electromagnetic agitator is 160-200 mm; the non-magnetic roller is made of non-magnetic material and plays a role in supporting the ingot, and generally uses a closely spaced roller with a roller diameter of 90-110 mm.
再进一步，所述第一电磁搅拌段的电磁场有效覆盖面积S至少为：Furthermore, the effective coverage area S of the electromagnetic field of the first electromagnetic stirring section is at least:
S＝K×H，S＝K×H，
式中，K为铸坯的断面宽度；H为第一电磁搅拌段范围内铸坯活动通道的长度，且H的取值范围为H≥600mm。Wherein, K is the cross-sectional width of the ingot; H is the length of the ingot active channel within the first electromagnetic stirring section, and the value range of H is H≥600mm.
更进一步，所述铸坯活动通道两侧的自由辊对称设置；所述第一电磁搅拌段的无磁辊与自由辊对称设置；所述第二电磁搅拌器对称设置；所述第三电磁搅拌器对称设置。Furthermore, the free rollers on both sides of the active channel of the casting are symmetrically arranged; the non-magnetic roller and the free roller of the first electromagnetic stirring section are symmetrically arranged; the second electromagnetic stirrer is symmetrically arranged; and the third electromagnetic stirrer is symmetrically arranged.
本发明的一种用于薄板坯带电磁搅拌装置的扇形段具有以下优点：通过三种不同模式的电磁搅拌段对铸坯进行三重电磁搅拌，形成等轴晶，解决CSP生产中高牌号无取向硅钢瓦楞质量缺陷。The fan-shaped segment of the electromagnetic stirring device for thin slabs of the present invention has the following advantages: the casting is subjected to triple electromagnetic stirring by electromagnetic stirring segments of three different modes to form equiaxed crystals, thereby solving the quality defects of high-grade non-oriented silicon steel corrugations in CSP production.
图1为本发明的扇形段本体结构示意图；FIG1 is a schematic diagram of the structure of a sector body of the present invention;
图2为本发明的扇形段本体的剖视图结构示意图。FIG. 2 is a schematic diagram of the cross-sectional structure of a sector body of the present invention.
图中标记说明：1、铸坯；2、无磁辊；3、第一框架；4、外弧侧第二电磁搅拌器；5、内弧侧第二电磁搅拌器；6、自由辊；7、外弧侧第三电磁搅拌器；8、内弧侧第三电磁搅拌器；9、第一电磁搅拌器；10、第二框架；11、扇形段本体；12、第一电磁搅拌段；13、第二电磁搅拌段；14、第三电磁搅拌段；15、第二电磁搅拌器；16、第三电磁搅拌器。Explanation of marks in the figure: 1. ingot; 2. non-magnetic roller; 3. first frame; 4. second electromagnetic stirrer on the outer arc side; 5. second electromagnetic stirrer on the inner arc side; 6. free roller; 7. third electromagnetic stirrer on the outer arc side; 8. third electromagnetic stirrer on the inner arc side; 9. first electromagnetic stirrer; 10. second frame; 11. sector body; 12. first electromagnetic stirring section; 13. second electromagnetic stirring section; 14. third electromagnetic stirring section; 15. second electromagnetic stirrer; 16. third electromagnetic stirrer.
为了更好地了解本发明的目的、结构及功能，下面结合附图，对本发明做进一步详细的描述。In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.
如图1所示，本实施例的一种用于薄板坯带电磁搅拌装置的扇形段主要用于CSP高拉速连铸连轧技术，拉速一般达到3-9m/min，并且安装于结晶器出口处，主要用于中高牌号无取向硅钢生产。所述扇形段包括扇形段本体11，所述扇形段本体11包括相对设置的第一框架3和第二框架10。具体地，在本实施例中，所述第一框架3为扇形段内框架，所述第二框架10为扇形段外框架。所述第一框架3和第二框架10之间为铸坯1的活动通道。As shown in FIG1 , a fan-shaped segment for a thin slab with an electromagnetic stirring device in this embodiment is mainly used in CSP high-speed continuous casting and rolling technology, and the pulling speed generally reaches 3-9 m/min, and is installed at the outlet of the crystallizer, and is mainly used for the production of medium and high-grade non-oriented silicon steel. The fan-shaped segment includes a fan-shaped segment body 11, and the fan-shaped segment body 11 includes a first frame 3 and a second frame 10 arranged oppositely. Specifically, in this embodiment, the first frame 3 is an inner frame of the fan-shaped segment, and the second frame 10 is an outer frame of the fan-shaped segment. Between the first frame 3 and the second frame 10 is a movable channel for the casting slab 1.
如图2所示，所述扇形段本体11包括位于入口处的第一电磁搅拌段12，位于出口处的第三电磁搅拌段14和位于所述第一电磁搅拌段12和第三电磁搅拌段14之间的第二电磁搅拌段13，所述第一电磁搅拌段12和第二电磁搅拌段13之间的铸坯活动通道两侧设有至少一组自由辊6，所述第二电磁搅拌段13和第三电磁搅拌段14之间的铸坯活动通道两侧设有至少一组自由辊6，所述铸坯活动通道两侧的自由辊6对称设置。As shown in Figure 2, the fan-shaped segment body 11 includes a first electromagnetic stirring segment 12 located at the entrance, a third electromagnetic stirring segment 14 located at the exit, and a second electromagnetic stirring segment 13 located between the first electromagnetic stirring segment 12 and the third electromagnetic stirring segment 14. At least one group of free rollers 6 are provided on both sides of the active channel for casting between the first electromagnetic stirring segment 12 and the second electromagnetic stirring segment 13, and at least one group of free rollers 6 are provided on both sides of the active channel for casting between the second electromagnetic stirring segment 13 and the third electromagnetic stirring segment 14. The free rollers 6 on both sides of the active channel for casting are symmetrically arranged.
如图2所示，所述第一电磁搅拌段12包括设置在第二框架10上的第一电磁搅拌器9，所述第一电磁搅拌段12内的铸坯活动通道一侧设置无磁辊2，另一侧设置自由辊6，所述无磁辊2与第一电磁搅拌器9设置在同一框架上。具体地，所述无磁辊2为非磁性材料，一般采用密排辊，且所述无磁辊2的辊径为90-110mm。所述第一电磁搅拌段12的无磁辊2与自由辊6对称设置。As shown in FIG2 , the first electromagnetic stirring section 12 includes a first electromagnetic stirrer 9 disposed on a second frame 10, a non-magnetic roller 2 is disposed on one side of the active channel of the casting in the first electromagnetic stirring section 12, and a free roller 6 is disposed on the other side, and the non-magnetic roller 2 and the first electromagnetic stirrer 9 are disposed on the same frame. Specifically, the non-magnetic roller 2 is made of non-magnetic material, generally a closely spaced roller, and the roller diameter of the non-magnetic roller 2 is 90-110 mm. The non-magnetic roller 2 and the free roller 6 of the first electromagnetic stirring section 12 are symmetrically disposed.
所述第一电磁搅拌器9作用到铸坯1中心的电磁场X≥600Gs。所述第一电磁搅拌段12的电磁场有效覆盖面积S至少为：The electromagnetic field X of the first electromagnetic stirrer 9 acting on the center of the casting slab 1 is ≥ 600 Gs. The effective coverage area S of the electromagnetic field of the first electromagnetic stirring section 12 is at least:
S＝K×H，S＝K×H，
式中，K为铸坯1的断面宽度。H为第一电磁搅拌段12范围内铸坯活动通道的长度，且H的取值范围为H≥600mm。Wherein, K is the cross-sectional width of the ingot 1. H is the length of the ingot moving channel within the first electromagnetic stirring section 12, and the value range of H is H≥600 mm.
如图2所示，第二电磁搅拌段13包括设置在第二电磁搅拌段13内铸坯活动通道两侧的第二电磁搅拌器15，所述第二电磁搅拌器15对称设置。具体地，在本实施例中，所述第二电磁搅拌器15包括外弧侧第二电磁搅拌器4和内弧侧第二电磁搅拌器5。所述第二电磁搅拌器15为与所述自由辊6形状一致的辊状结构，且所述第二电磁搅拌器15的辊径为130-160mm。所述第二电磁搅拌段13作用到铸坯1中心的电磁场X≤800Gs。As shown in Figure 2, the second electromagnetic stirring section 13 includes a second electromagnetic stirrer 15 arranged on both sides of the active channel of the ingot in the second electromagnetic stirring section 13, and the second electromagnetic stirrer 15 is symmetrically arranged. Specifically, in this embodiment, the second electromagnetic stirrer 15 includes a second electromagnetic stirrer 4 on the outer arc side and a second electromagnetic stirrer 5 on the inner arc side. The second electromagnetic stirrer 15 is a roller-shaped structure consistent with the shape of the free roller 6, and the roller diameter of the second electromagnetic stirrer 15 is 130-160mm. The electromagnetic field X of the second electromagnetic stirring section 13 acting on the center of the ingot 1 is ≤800Gs.
如图2所示，第三电磁搅拌段14包括设置在第三电磁搅拌段14内铸坯活动通道两侧的第三电磁搅拌器16，所述第三电磁搅拌器16对称设置。具体地，在本实施例中，所述第三电磁搅拌器16包括外弧侧第三电磁搅拌器7和内弧侧第三电磁搅拌器8。所述第三电磁搅拌器16为与所述自由辊6形状一致的辊状结构，且所述第三电磁搅拌器16的辊径为160-200mm。所述第三电磁搅拌器16作用到铸坯1中心的电磁场X≥1200Gs。As shown in Figure 2, the third electromagnetic stirring section 14 includes a third electromagnetic stirrer 16 arranged on both sides of the active channel of the ingot in the third electromagnetic stirring section 14, and the third electromagnetic stirrer 16 is symmetrically arranged. Specifically, in this embodiment, the third electromagnetic stirrer 16 includes a third electromagnetic stirrer 7 on the outer arc side and a third electromagnetic stirrer 8 on the inner arc side. The third electromagnetic stirrer 16 is a roller-shaped structure consistent with the shape of the free roller 6, and the roller diameter of the third electromagnetic stirrer 16 is 160-200mm. The electromagnetic field X of the third electromagnetic stirrer 16 acting on the center of the ingot 1 is ≥1200Gs.
本发明所提供的一种用于薄板坯带电磁搅拌装置的扇形段，可以解决目前CSP连铸坯的质量问题，铸坯等轴晶可以达到50％以上，解决了CSP生产中高端无取向硅钢的问题。The fan-shaped segment with electromagnetic stirring device for thin slab provided by the present invention can solve the quality problem of current CSP continuous casting slab, and the equiaxed grain of the casting slab can reach more than 50%, solving the problem of high-end non-oriented silicon steel in CSP production.
可以理解，本发明是通过一些实施例进行描述的，本领域技术人员知悉的，在不脱离本发明的精神和范围的情况下，可以对这些特征和实施例进行各种改变或等效替换。另外，在本发明的教导下，可以对这些特征和实施例进行修改以适应具体的情况及材料而不会脱离本发明的精神和范围。因此，本发明不受此处所公开的具体实施例的限制，所有落入本申请的权利要求范围内的实施例都属于本发明所保护的范围内。It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.
Claims (5)
- 一种用于薄板坯带电磁搅拌装置的扇形段，包括扇形段本体(11)，所述扇形段本体(11)包括相对设置的第一框架(3)和第二框架(10)，所述第一框架(3)和第二框架(10)之间为铸坯活动通道；其特征在于：A sector for a thin slab with electromagnetic stirring device, comprising a sector body (11), wherein the sector body (11) comprises a first frame (3) and a second frame (10) arranged opposite to each other, and a casting channel is provided between the first frame (3) and the second frame (10); the characteristics are:所述扇形段本体(11)包括位于入口处的第一电磁搅拌段(12)，位于出口处的第三电磁搅拌段(14)和位于所述第一电磁搅拌段(12)和第三电磁搅拌段(14)之间的第二电磁搅拌段(13)，所述第一电磁搅拌段(12)和第二电磁搅拌段(13)之间的铸坯活动通道两侧设有至少一组自由辊(6)，所述第二电磁搅拌段(13)和第三电磁搅拌段(14)之间的铸坯活动通道两侧设有至少一组自由辊(6)；The sector body (11) comprises a first electromagnetic stirring section (12) located at the entrance, a third electromagnetic stirring section (14) located at the exit and a second electromagnetic stirring section (13) located between the first electromagnetic stirring section (12) and the third electromagnetic stirring section (14), at least one group of free rollers (6) being provided on both sides of a casting active channel between the first electromagnetic stirring section (12) and the second electromagnetic stirring section (13), and at least one group of free rollers (6) being provided on both sides of a casting active channel between the second electromagnetic stirring section (13) and the third electromagnetic stirring section (14);所述第一电磁搅拌段(12)包括设置在第二框架(10)上的第一电磁搅拌器(9)，所述第一电磁搅拌段(12)内的铸坯活动通道一侧设置无磁辊(2)，另一侧设置自由辊(6)，所述无磁辊(2)与第一电磁搅拌器(9)设置在同一框架上；The first electromagnetic stirring section (12) comprises a first electromagnetic stirrer (9) arranged on a second frame (10); a non-magnetic roller (2) is arranged on one side of a casting active channel in the first electromagnetic stirring section (12); and a free roller (6) is arranged on the other side; the non-magnetic roller (2) and the first electromagnetic stirrer (9) are arranged on the same frame;第二电磁搅拌段(13)包括设置在第二电磁搅拌段(13)内铸坯活动通道两侧的第二电磁搅拌器(15)，所述第二电磁搅拌器(15)为与所述自由辊(6)形状一致的辊状结构；The second electromagnetic stirring section (13) comprises second electromagnetic stirrers (15) arranged on both sides of the active channel of the casting blank in the second electromagnetic stirring section (13), and the second electromagnetic stirrer (15) is a roller-shaped structure having the same shape as the free roller (6);第三电磁搅拌段(14)包括设置在第三电磁搅拌段(14)内铸坯活动通道两侧的第三电磁搅拌器(16)，所述第三电磁搅拌器(16)为与所述自由辊(6)形状一致的辊状结构。The third electromagnetic stirring section (14) comprises a third electromagnetic stirrer (16) arranged on both sides of the casting billet active channel in the third electromagnetic stirring section (14), and the third electromagnetic stirrer (16) is a roller-shaped structure consistent with the shape of the free roller (6).
- 根据权利要求1所述的用于薄板坯带电磁搅拌装置的扇形段，其特征在于，所述第一电磁搅拌器(9)作用到铸坯(1)中心的电磁场X≥600Gs；所述第二电磁搅拌段(13)作用到铸坯(1)中心的电磁场X≤800Gs；所述第三电磁搅拌器(16)作用到铸坯(1)中心的电磁场X≥1200Gs。According to the fan-shaped segment of the electromagnetic stirring device for thin slab strips as described in claim 1, it is characterized in that the electromagnetic field X of the first electromagnetic stirrer (9) acting on the center of the ingot (1) is ≥600Gs; the electromagnetic field X of the second electromagnetic stirring segment (13) acting on the center of the ingot (1) is ≤800Gs; the electromagnetic field X of the third electromagnetic stirrer (16) acting on the center of the ingot (1) is ≥1200Gs.
- 根据权利要求1所述的用于薄板坯带电磁搅拌装置的扇形段，其特征在于，所述第二电磁搅拌器(15)的辊径为130-160mm；所述第三电磁搅拌器(16)的辊径为160-200mm；所述无磁辊(2)的辊径为90-110mm。According to the fan-shaped segment of the electromagnetic stirring device for thin slab strip according to claim 1, it is characterized in that the roller diameter of the second electromagnetic stirrer (15) is 130-160 mm; the roller diameter of the third electromagnetic stirrer (16) is 160-200 mm; the roller diameter of the non-magnetic roller (2) is 90-110 mm.
- 根据权利要求1所述的用于薄板坯带电磁搅拌装置的扇形段，其特征在于，所述第一电磁搅拌段(12)的电磁场有效覆盖面积S至少为：The sector segment for the electromagnetic stirring device for thin slab strip according to claim 1 is characterized in that the effective coverage area S of the electromagnetic field of the first electromagnetic stirring segment (12) is at least:S＝K×H，S＝K×H，式中，K为铸坯(1)的断面宽度；H为第一电磁搅拌段(12)范围内铸坯活动通道的长度，且H的取值范围为H≥600mm。In the formula, K is the cross-sectional width of the ingot (1); H is the length of the ingot moving channel within the first electromagnetic stirring section (12), and the value range of H is H≥600 mm.
- 根据权利要求1所述的用于薄板坯带电磁搅拌装置的扇形段，其特征在于，所述铸坯活动通道两侧的自由辊(6)对称设置；所述第一电磁搅拌段(12)的无磁辊(2)与自由辊(6)对称设置；所述第二电磁搅拌器(15)对称设置；所述第三电磁搅拌器(16)对称设置。According to the fan-shaped segment of the electromagnetic stirring device for thin slab strip according to claim 1, it is characterized in that the free rollers (6) on both sides of the active channel of the casting are symmetrically arranged; the non-magnetic roller (2) and the free roller (6) of the first electromagnetic stirring segment (12) are symmetrically arranged; the second electromagnetic stirrer (15) is symmetrically arranged; the third electromagnetic stirrer (16) is symmetrically arranged.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101164720A (en) * | 2006-10-19 | 2008-04-23 | 鞍钢股份有限公司 | Continuous casting method for increasing equiaxial crystal rate of medium-thickness continuous casting slab of non-oriented silicon steel |
| CN103121092A (en) * | 2013-03-22 | 2013-05-29 | 北京科技大学 | Continuous casting bloom soft press technology based on tail end electromagnetic stirring |
| CN203292445U (en) * | 2013-05-06 | 2013-11-20 | 浙江大鹏重工设备制造有限公司 | Non-magnetic roller with electromagnetic generator |
| US20170036267A1 (en) * | 2014-04-25 | 2017-02-09 | Thyssenkrupp Steel Europe Ag | Method and device for thin-slab strand casting |
| JP2020015083A (en) * | 2018-07-27 | 2020-01-30 | 日本製鉄株式会社 | Flow control apparatus for thin slab continuous casting and continuous casting method for thin slab |
| CN114130976A (en) * | 2021-12-09 | 2022-03-04 | 山西太钢不锈钢股份有限公司 | Method for improving center compactness of axle steel large round billet |
| CN115401176A (en) * | 2022-09-21 | 2022-11-29 | 湖南中科电气股份有限公司 | Multi-pair-pole sectional electromagnetic roller, electromagnetic stirring device, system and method |
| CN218656733U (en) * | 2022-12-06 | 2023-03-21 | 湖南中科电气股份有限公司 | Fan-shaped section for sheet billet belt electromagnetic stirring device |
-
2022
- 2022-12-06 CN CN202211556970.0A patent/CN115722639A/en active Pending
-
2023
- 2023-01-06 WO PCT/CN2023/070915 patent/WO2024119583A1/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101164720A (en) * | 2006-10-19 | 2008-04-23 | 鞍钢股份有限公司 | Continuous casting method for increasing equiaxial crystal rate of medium-thickness continuous casting slab of non-oriented silicon steel |
| CN103121092A (en) * | 2013-03-22 | 2013-05-29 | 北京科技大学 | Continuous casting bloom soft press technology based on tail end electromagnetic stirring |
| CN203292445U (en) * | 2013-05-06 | 2013-11-20 | 浙江大鹏重工设备制造有限公司 | Non-magnetic roller with electromagnetic generator |
| US20170036267A1 (en) * | 2014-04-25 | 2017-02-09 | Thyssenkrupp Steel Europe Ag | Method and device for thin-slab strand casting |
| JP2020015083A (en) * | 2018-07-27 | 2020-01-30 | 日本製鉄株式会社 | Flow control apparatus for thin slab continuous casting and continuous casting method for thin slab |
| CN114130976A (en) * | 2021-12-09 | 2022-03-04 | 山西太钢不锈钢股份有限公司 | Method for improving center compactness of axle steel large round billet |
| CN115401176A (en) * | 2022-09-21 | 2022-11-29 | 湖南中科电气股份有限公司 | Multi-pair-pole sectional electromagnetic roller, electromagnetic stirring device, system and method |
| CN218656733U (en) * | 2022-12-06 | 2023-03-21 | 湖南中科电气股份有限公司 | Fan-shaped section for sheet billet belt electromagnetic stirring device |
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