WO2011057426A1 - 高磁场板坯二冷区电磁搅拌辊 - Google Patents

高磁场板坯二冷区电磁搅拌辊 Download PDF

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Publication number
WO2011057426A1
WO2011057426A1 PCT/CN2009/001253 CN2009001253W WO2011057426A1 WO 2011057426 A1 WO2011057426 A1 WO 2011057426A1 CN 2009001253 W CN2009001253 W CN 2009001253W WO 2011057426 A1 WO2011057426 A1 WO 2011057426A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
stirring roller
electromagnetic stirring
winding
core
Prior art date
Application number
PCT/CN2009/001253
Other languages
English (en)
French (fr)
Inventor
李爱武
Original Assignee
湖南中科电气股份有限公司
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 湖南中科电气股份有限公司 filed Critical 湖南中科电气股份有限公司
Priority to PCT/CN2009/001253 priority Critical patent/WO2011057426A1/zh
Publication of WO2011057426A1 publication Critical patent/WO2011057426A1/zh

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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
    • B22D11/10—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

Definitions

  • the invention relates to an electromagnetic stirring roller used in a metal continuous casting process, in particular to a high magnetic field slab secondary cooling zone electromagnetic stirring roller.
  • Electromagnetic stirring in the secondary cold zone of slab usually adopts the following three forms: a. Rolling magnetic field after roller, b. Rolling magnetic field, c. Magnetic plug-in traveling magnetic field.
  • the roller traveling magnetic field type has the same shape as the ordinary roller because the electromagnetic inductor is directly placed in the supporting roller to form an electromagnetic stirring roller. It can be easily installed on the slab caster without changing the structure of the caster, so it is easily accepted by users.
  • the cross section of the inductor core is small, so the magnetic flux density is not high and the stirring force is small.
  • the existing electromagnetic stirring rolls are usually in the form of an E-shaped iron core and a Kram circular winding.
  • the electromagnetic roller of this structure has the following disadvantages: a.
  • the core teeth occupy a relatively large volume, so that the ratio of the winding and the core cross section is reduced, and the number of ampere turns and the magnetic conductive area are small, so the magnetic field is also small.
  • the magnetic field is distributed around the iron core, and the magnetic flux leakage is large, so that the magnetic field of the working surface is reduced.
  • the E-shaped toothed core has a small magnetic permeability area, large magnetic resistance and large magnetic leakage defects, which have seriously affected the use effect of the electromagnetic stirring roller.
  • An object of the present invention is to improve the disadvantages and problems of the prior art, and to provide a high-field slab secondary cold zone electromagnetic stirring roller which can increase the magnetic flux density of the electromagnetic entanglement roller and increase the electromagnetic stirring force.
  • the technical solution of the present invention is: constructing a novel magnetic core shape and providing a high magnetic field slab cold zone electromagnetic stirring roller with a magnetic shielding screen structure. It consists of a winding and an iron core, which is characterized by the use of a core without a tooth groove.
  • the cylindrical iron core, the stirring roller is provided with a magnetic shielding ring, the outer surface of the magnetic shielding ring is a non-working surface, and the surface not blocked by the magnetic shielding ring is a working surface.
  • the invention changes the E-shaped iron core to the cylindrical iron core without the cogging, which can maximize the space utilization of the winding, increase the magnetic permeability area of the iron core, thereby increasing the magnetic field strength and increasing the electromagnetic stirring force.
  • Adding a magnetic shielding ring to the other surface of the agitating roller except the working surface can prevent the magnetic field from leaking from the direction of no work, thereby greatly increasing the magnetic field strength of the working surface and increasing the electromagnetic stirring force.
  • Figure 1 is a front view of the structure of the background art
  • Figure 2 is a cross-sectional view of Figure 1.
  • Figure 3 is a front view of the structure of the present invention
  • Figure 4 is a cross-sectional view of Figure 3
  • Figure 5 is a schematic view of the three-dimensional structure of the present invention.
  • Figure 6 is a schematic view of the exploded structure of Figure 5
  • the present invention comprises a winding (1) and an iron core (2), characterized in that the iron core (2) is a cylindrical iron core (2) without a tooth groove, and the stirring roller is provided with a magnetic shielding ring.
  • the outer surface of the magnetic shielding ring (3) is a non-working surface, and the surface not blocked by the magnetic shielding ring (3) is a working surface.
  • the winding (1) of the present invention is circumferentially or continuously wound around the periphery of the cylindrical core (2).
  • the magnetic shield ring (3) is sleeved on the outer layer of the winding (1) and the cylindrical core (2).
  • the magnetic shielding ring (3) has a cornice, and the winding (1) at the mouth is exposed to the working surface of the stirring roller.
  • the core (2) is cylindrical and has no teeth and grooves.
  • the inventors of the present invention have prototyped a prototype which is as large as the outer shape of the conventional electromagnetic stirring roller by the above method. After testing, the working surface magnetic field strength increased by 80 ° /. , the electromagnetic force increased by 120 ° /. . The effect is quite obvious.
  • the increase of the stirring force makes the electromagnetic stirring roller realize the magnetic pole inserted type traveling wave magnetic field electromagnetic stirrer
  • the utility model has the advantages of large stirring force and good metallurgical effect, and retains the convenient installation of the roller traveling wave magnetic field electromagnetic stirrer, low cost, no need to change the structure of the continuous casting machine structure, and becomes the development direction of the electromagnetic stirrer in the second cold zone of the slab.

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

Description

说 明 书 高磁场板坯二冷区电磁搅拌辊
技术领域
本发明涉及金属连续铸造工艺中使用的电磁搅拌辊， 特别指一种高磁场板 坯二冷区电磁搅拌辊。
背景技术
板坯二冷区电磁搅拌通常采用以下三种形式： a.辊后行波磁场型， b. 辊式行 波磁场型， c.磁极插入式行波磁场型。 现在使用最多的是后两种。 其中辊式行 波磁场型由于直接将电磁感应器置于支承辊内形成电磁搅拌辊， 外形与普通辊 一样。 可以十分方便的安装在板坯连铸机上而不改变连铸机的结构， 因而很容 易被用户所接受。 但由于受辊内安装空间的限制， 感应器铁芯截面较小， 因而 磁通密度不高， 搅拌力偏小。 现有电磁搅拌辊通常采用 E字形铁芯， 克兰姆环 行绕组形式。 这种结构的电磁辊存在以下不足之处： a. 铁芯齿占了比较大的体 积， 使得绕组及铁芯截面所占比率减小， 安匝数及导磁面积小， 所以磁场也小。 b. 磁场在铁芯四周发散分布， 漏磁大， 使得工作面磁场减小。 E字形带齿槽铁 芯， 克兰姆环行绕组形式所具有的铁芯导磁面积小， 磁阻大， 漏磁大的缺陷已 经严重影响到了电磁搅拌辊的使用效果。
发明内容
本发明的目的是针对背景技术中存在的缺点和问题加以改进， 提供一种可 以提高电磁搅泮辊的磁通密度， 增加电磁搅拌力的高磁场板坯二冷区电磁搅拌 辊。
本发明的技术方案是： 构造一种新型铁芯形状并且设有磁蔽屏结构的高磁 场板坯二冷区电磁搅拌辊。 它包括绕组和铁芯， 其特点是铁芯采用不带齿槽的 圆柱形铁芯， 搅拌辊设有磁屏蔽环， 磁屏蔽环外表面为非工作面， 未被磁屏蔽 环遮挡住的面为工作面。
本发明将 E字形铁芯改为不带齿槽的圆柱形铁芯，可以最大限度地提高绕组 的空间利用率， 增加铁芯的导磁面积， 从而增加磁场强度， 加大电磁搅拌力。 在搅拌辊除工作面以外的其他面加装磁屏蔽环， 可以最大限度的防止磁场从不 作功的方向泄露， 从而大大增加工作面的磁场强度， 增加电磁搅拌力。
附图说明
图 1是背景技术结构主视图
图 2是图 1剖面图
图 3是本发明结构主视图
图 4是图 3剖面图
图 5是本发明立体结构示意图
图 6是图 5分解结构示意图
具体实施方式
由图 3、 4可知， 本发明包括绕组 （1 ) 和铁芯 （2)， 其特点是铁芯 （2) 采 用不带齿槽的圆柱形铁芯 （2), 搅拌辊设有磁屏蔽环 （3 )， 磁屏蔽环（3 ) 外表 面为非工作面， 未被磁屏蔽环 （3 ) 遮挡住的面为工作面。
本发明所述的绕组 （1 ) 间隔或者连续绕制在圆柱形铁芯 （2 ) 的外围。 所 述的磁屏蔽环 （3 )套设在绕组 （1 ) 和圆柱形铁芯 （2) 的外层。 所述的磁屏蔽 环（3 )有一敝口， 敝口处绕组（1 )暴露在外为搅拌辊工作面。 所述的铁心（2) 为圆柱形， 没有齿和槽。
本发明发明人按以上方法试制了一台与以往电磁搅拌辊外形尺寸一样大的 样机。 经测试， 工作面磁场强度增加了 80°/。， 电磁力增加了 120°/。。 效果相当明 显。 搅拌力的增加， 使得电磁搅拌辊既实现了磁极插入式行波磁场电磁搅拌器 搅拌力大、 冶金效果好的优点， 又保留了辊式行波磁场电磁搅拌器安装方便、 成本低廉、 不用改动连铸机结构的优点， 成为板坯二冷区电磁搅拌器发展的方 向。
本发明所述的实施例仅仅是对本发明的优选实施方式进行的描述， 并非对 本发明构思和范围进行限定， 在不脱离本发明设计思想的前题下， 本领域中工 程技术人员对本发明的技术方案作出的各种变型和改进， 均应落入本发明的保 护范围， 本发明请求保护的技术内容， 已经全部记载在权利要求书中。

Claims

权 利 要 求 书
1、 一种高磁场板坯二冷区电磁搅泮辊， 包括绕组 （1 ) 和铁芯 （2)， 其特 征在于铁芯 （2) 采用不带齿槽的圆柱形铁芯 （2)， 搅拌辊设有磁屏蔽环 （3 )， 磁屏蔽环 （3 ) 外表面为非工作面， 未被磁屏蔽环 （3) 遮挡住的面为工作面。
2、 根据权利要求 1所述的高磁场板坯二冷区电磁搅拌辊， 其特征在于所述 的绕组 （1 ) 间隔或者连续绕制在圆柱形铁芯 （2) 的外围。
3、 根据权利要求 1所述的高磁场板坯二冷区电磁搅泮辊， 其特征在于所述 的磁屏蔽环 （3 ) 套设在绕组 （1 ) 和圆柱形铁芯 （2) 的外层。
4、 根据权利要求 3所述的高磁场板坯二冷区电磁搅拌辊， 其特征在于所述 的磁屏蔽环 （3 ) 有一敝口， 敝口处绕组 （1 ) 暴露在外为搅拌辊工作面。
5、 根据权利要求 1所述的高磁场板坯二冷区电磁搅泮辊， 其特征在于所述 的铁心 （2) 为圆柱形， 没有齿和槽。
PCT/CN2009/001253 2009-11-12 2009-11-12 高磁场板坯二冷区电磁搅拌辊 WO2011057426A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT522811A1 (de) * 2019-07-17 2021-02-15 Primetals Technologies Austria GmbH Elektromagnetische Spulenanordnung und elektromagnetische Rührrolle für eine Stranggussanlage

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Publication number Priority date Publication date Assignee Title
EP0374563A1 (en) * 1988-12-07 1990-06-27 Asea Brown Boveri Ab Electromagnetic stirrer for continuous casting
CN101032741A (zh) * 2006-07-07 2007-09-12 岳阳中科电气有限公司 高磁场板坯二冷区电磁搅拌辊
CN200951457Y (zh) * 2006-07-07 2007-09-26 岳阳中科电气有限公司 采用铜管绕组水内冷的结晶器内置式电磁搅拌器
CN101518815A (zh) * 2009-04-10 2009-09-02 湖南中科电气股份有限公司 C形凝固末端电磁搅拌器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374563A1 (en) * 1988-12-07 1990-06-27 Asea Brown Boveri Ab Electromagnetic stirrer for continuous casting
CN101032741A (zh) * 2006-07-07 2007-09-12 岳阳中科电气有限公司 高磁场板坯二冷区电磁搅拌辊
CN200951457Y (zh) * 2006-07-07 2007-09-26 岳阳中科电气有限公司 采用铜管绕组水内冷的结晶器内置式电磁搅拌器
CN101518815A (zh) * 2009-04-10 2009-09-02 湖南中科电气股份有限公司 C形凝固末端电磁搅拌器

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Title
LI, AIWU ET AL.: "technology and application of electromagnetic stirring roller with high magnetic force for plate blank continuous casting", 2008 CONTINUOUS CASTING EQUIPMENT AND TECHNOLOGY SEMINAR PAPERS, April 2008 (2008-04-01), pages 130 - 136 *
LI, AIWU: "technology and application of electromagnetic stirring for secondary cooling region of plate blank continuous casting", NO. 5 ELECTROMAGNETIC STIRRING TECHNOLOGY FOR CONTINUOUS CASTING LEARNING SEMINAR PAPERS, 2008, pages 200 - 212 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT522811A1 (de) * 2019-07-17 2021-02-15 Primetals Technologies Austria GmbH Elektromagnetische Spulenanordnung und elektromagnetische Rührrolle für eine Stranggussanlage
AT522811B1 (de) * 2019-07-17 2021-10-15 Primetals Technologies Austria GmbH Elektromagnetische Spulenanordnung und elektromagnetische Rührrolle für eine Stranggussanlage

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