WO2008151574A1 - Appareil oscillant pour moule - Google Patents

Appareil oscillant pour moule Download PDF

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Publication number
WO2008151574A1
WO2008151574A1 PCT/CN2008/071274 CN2008071274W WO2008151574A1 WO 2008151574 A1 WO2008151574 A1 WO 2008151574A1 CN 2008071274 W CN2008071274 W CN 2008071274W WO 2008151574 A1 WO2008151574 A1 WO 2008151574A1
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WO
WIPO (PCT)
Prior art keywords
crystallizer
vibration
rocker arm
electric cylinder
arc
Prior art date
Application number
PCT/CN2008/071274
Other languages
English (en)
French (fr)
Inventor
Hong Jiang
Zhiheng Tian
Original Assignee
Hong Jiang
Zhiheng Tian
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 Hong Jiang, Zhiheng Tian filed Critical Hong Jiang
Publication of WO2008151574A1 publication Critical patent/WO2008151574A1/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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/053—Means for oscillating the moulds
    • 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
    • B22D11/166—Controlling or regulating processes or operations for mould oscillation

Definitions

  • This invention relates to a continuous casting machine crystallizer vibration system. Background technique
  • the crystallizer vibration system is an integral part of the continuous casting machine.
  • the vibration source of the existing continuous casting machine vibration system is mechanical and hydraulic.
  • the former's vibration-vibration equipment is a one-way rotating motor, and online automatic adjustment of amplitude and waveform cannot be achieved.
  • the latter enables on-line adjustment of amplitude and waveform, but requires complex hydraulic systems, with long installation and commissioning cycles, and is not suitable for the fast-paced requirements of modern high-efficiency continuous casting. Summary of the invention
  • the crystallizer vibrating system of the present invention is composed of a vibrating device including a vibrating table supporting the crystallizer and a vibrating table mounted on the vibrating table to drive the vibrating table.
  • the vibration oscillating device is an electric cylinder, and the vibration of the electric cylinder drives the vibration gantry and the crystallizer to vibrate along a certain trajectory, and the control device is connected to the electric cylinder to control the vibration of the electric cylinder.
  • the vibration of the electric cylinder drives the crystallizer vibration, which is simpler and more compact than the conventional mechanical four-eccentric or four-link transmission system, and does not require a hydraulic system. And the online automatic adjustment of the waveform can meet the requirements of modern high-efficiency continuous casting fast pace.
  • the vibrating table is a vibrating table, and the electric cylinders are two, and the crystallizer is driven to vibrate along an arc.
  • the two electric cylinders are distributed on the inner arc side of the crystallizer and One side of the outer arc, and the amplitudes of the two electric cylinders are proportional to the distance from the center of curvature of the vibration arc of the crystallizer to ensure that the crystallizer realizes the arc-like vibration.
  • the amplitudes of the two electric cylinders respectively satisfy the following relationship:
  • An represents the amplitude of the inner arc side electric cylinder
  • Aw represents the amplitude of the outer arc side electric cylinder
  • A represents the amplitude of the crystallizer
  • R represents the radius of the crystal oscillator vibration arc
  • Ln represents the inner arc side electric cylinder to the outer arc tangent
  • the distance, Lw represents the distance from the outer arc side electric cylinder to the outer arc tangent, where the outer arc tangent is the tangent at the intersection of the crystallizer vibration arc and the crystallizer horizontal center line.
  • the control device controls the two electric cylinders to vibrate synchronously.
  • the base plate, the two leaf springs and the plurality of rollers and the pull rods are distributed on the left and right sides below the crystallizer, and each leaf spring is fixed on the vibration table by the upper bracket at the outer arc end. Fixing on the base at the inner arc end by the lower bracket, limiting the yaw of the vibrating table and the inner and outer arc directions of the crystallizer, the center line of the roller is parallel to the horizontal center line of the crystallizer, and the center line of the tie rod is perpendicular to the horizontal center line of the crystallizer , Limiting the vibration table and the yaw of the crystallizer in the left and right direction.
  • the vibration gantry is a rocker arm
  • the electric cylinder is one, driving the crystallizer to vibrate along an arc
  • the rocker arm has a rocker arm front axle, and a rocker An arm center shaft, a rocker arm support and a rocker arm rear axle, the rocker arm support sitting on the base to support the rocker arm middle shaft, the rocker arm supporting the crystallizer by a rocker arm front axle
  • the electric motor The cylinder is mounted on the base and drives the rocker arm and the crystallizer sitting on the rocker arm to vibrate through the rocker rear axle.
  • the vibration of the upper part of the crystallizer is guided by the rocker arm, and the vibration of the lower part of the crystallizer is placed on the steel billet or mounted on the crystallizer.
  • the inner guide is guided by a spindle rod that guides the billet to be pulled out from the crystallizer.
  • the center line connecting the front arm of the rocker arm and the center axis of the rocker arm points to the center of curvature of the vibration arc of the crystallizer to ensure that the steel billet is smoothly pulled out from the crystallizer.
  • Figure 1 is a schematic view of a vibration system including a vibration table and an electric cylinder;
  • Figure la is a cross-sectional view taken along line A-A of Figure 1;
  • Figure lb is a cross-sectional view taken along line B-B of Figure 1;
  • FIG. 2 is a schematic diagram of a vibration system including a rocker arm and an electric cylinder. detailed description
  • a first embodiment of the present invention is shown in Fig. 1.
  • the vibration system of the first embodiment is composed of a vibration device that supports the crystallizer 101 and drives the crystallizer 101, and a control device 105 that connects the vibration device to control the vibration of the vibration device.
  • the vibration device includes a vibration table 102 and a vibration oscillating device mounted on the vibration table 102 to drive the vibration table 102 to vibrate.
  • the crystallizer 101 sits on the vibration table 102.
  • the driving device is two electric cylinders 104 mounted on the base 108 for driving the vibration table 102 to vibrate.
  • the two electric cylinders 104 are distributed on the inner arc side and the outer arc side of the crystallizer center line, and the amplitudes of the electric cylinders 104 and their respective The distance to the center of curvature of the crystal vibration arc is proportional to the vibration of the simulated arc.
  • the weight of the vibrating table 102 and the crystallizer 101 is supported by four spring kits 103 of the same length and rigidity to the base 108 to the equilibrium height of the vibration.
  • the two leaf springs 106 for preventing the yaw 101 from yaw are fixed to the vibrating table 102 at the outer arc end by the upper bracket 106a, and are fixed to the base 108 at the inner arc end by the lower bracket 106b, and are vibrated at the crystallizer 101 and the vibrating table 102.
  • the leaf spring 106 is directed to the center of curvature of the vibration arc of the crystallizer 101 to ensure that the steel slab 109 is smoothly pulled out from the crystallizer 101.
  • Four tie rods 107 and four sets of rollers 110 serve as auxiliary guides.
  • the control device 105 generates an on-line adjustable waveform of frequency, offset, and amplitude to control the vibration of the electric cylinder 104, thereby driving the vibrating table 102 and the crystallizer 101 to vibrate along a certain trajectory.
  • the present embodiment realizes the pseudo-arc vibration of the crystallizer by controlling the amplitude of the electric cylinder 104.
  • the crystal oscillator vibration curve is indicated as C
  • the horizontal center line of the crystallizer is indicated as XX
  • the tangent line at the intersection of the vibration arc C and the horizontal centerline XX of the crystallizer is the outer arc tangent.
  • T one side of the vibration arc of the outer arc tangent T is the inner arc direction, indicated by N
  • the other side is the outer arc direction, indicated by W
  • the curvature center 0 of the vibration arc C is located at the horizontal center of the crystallizer.
  • the radius of the vibration arc is R
  • the two electric cylinders 104 are distributed in the inner arc and the outer arc of the inner and outer arc center lines of the crystallizer, that is, the two electric cylinders 104 are respectively installed in the crystallizer 101.
  • the amplitudes required for the two electric cylinders to achieve the simulated arc vibration are respectively calculated, and the electric cylinder is controlled accordingly.
  • the distance from the inner arc side electric cylinder 104 to the outer arc tangent T is denoted as Ln
  • the distance from the outer arc side electric cylinder 104 to the outer arc tangent T is denoted as Lw
  • the amplitude of the crystallizer 101 is A, to realize the crystallizer
  • the simulated arc vibration, the amplitude An of the inner arc side electric cylinder and the amplitude Aw of the outer arc side electric cylinder need to satisfy the following relationship:
  • R-Ln is the distance from the inner arc side electric cylinder to the curvature center O of the crystallizer vibration arc C
  • R+Lw is the distance from the outer arc side electric cylinder to the curvature center C of the crystallizer vibration arc C
  • the amplitudes of the two electric cylinders 104 are proportional to the respective distances from the center of curvature 0 of the crystal oscillator arc C.
  • the control unit 105 controls the two electric cylinders 104 to vibrate in synchronization, which causes the crystallizer 101 to vibrate in an arc.
  • the orientation of the crystallizer 101 is a combination of a leaf spring 106, a tie rod 107 and a roller 110, two leaf springs 106 (the other leaf spring is behind the leaf spring shown in Figure 1,
  • the shading table 102 is restricted by being distributed on the left and right sides below the crystallizer 101 because it is blocked (not visible in FIG. 1)
  • the inner and outer arc directions of the crystallizer 101 are WN yaw.
  • the center line PP of the roller in the four sets of rollers 110 is parallel to the horizontal center line XX of the crystallizer, and the center line QQ of the tie rod 107 is perpendicular to the horizontal center line XX of the crystallizer.
  • the tie rod 107 and the roller 110 restrict the left and right directions of the vibrating table 102 and the crystallizer 101. Hemiplegia.
  • the first embodiment shown in Fig. 1 uses the spring kit 103 to support the balance of the mass of the vibrating table 102 and the crystallizer 101, and can be realized without a spring kit for a crystallizer having a small vibration quality. Therefore, the use and use of the spring kit is not limited to the above embodiment. Further, the combination of the guided leaf spring, the tie rod and the roller is not limited to the above embodiment, and may be selected depending on the quality of the vibrating table 102 and the crystallizer 101 in the practical application and other requirements.
  • a second embodiment of the invention is shown in Figure 2.
  • the crystallizer 201 is supported by the rocker arm 202 through the rocker front axle 202c.
  • the fulcrum of the rocker arm i.e., the center axle 202a of the rocker arm, is supported by a rocker mount 202b that sits on the base 205.
  • the electric cylinder 203 sitting on the base 205 drives the rocker arm 202 and the crystallizer 201 sitting on the rocker arm 202 to vibrate through the rocker rear axle 202d.
  • the extension line connecting the center line of the rocker front shaft 202c and the center axis 202a of the rocker arm points to the center of curvature of the vibration arc of the crystallizer 201 to ensure the smoothness of the steel billet 206 from the crystallizer 201.
  • the crystallizer 201 is provided with a spindle bar (not shown). After the steel billet 206 is formed, the billet 206 is guided by the spindle bar to be pulled out from the crystallizer 201.
  • the control device 204 When the crystallizer 201 vibrates, the vibration of the upper portion of the crystallizer is guided by the rocker arm 202, and the vibration of the lower portion of the crystallizer is guided by the spindle bar or the billet 206.
  • the control device 204 generates a frequency, bias slope and amplitude on-line adjustable waveform control electric cylinder 203 to drive the crystallizer 201 to vibrate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Description

结晶器振动系统 技术领域
本发明涉及连铸机结晶器振动系统。 背景技术
结晶器振动系统是连铸机的必要组成部分。 现有的连铸机振动系统的驱 振动力源有机械式和液压式的。 前者的驱振设备为单向旋转的电机， 不能实 现振幅和波形的在线自动调节。 后者可实现振幅和波形的在线调整， 但是需 要复杂的液压系统， 现场安装调试周期较长， 不适应现代高效连铸快节奏的 要求。 发明内容
本发明的目的是提供一种结构紧凑又能在线调整振幅和波形的结晶器振 动系统。
本发明的目的是这样实现的， 本发明的结晶器振动系统由振动装置和控 制装置组成， 所述振动装置包括承托结晶器的振动台架和安装于振动台架以 驱动振动台架振动的驱振设备， 所述驱振设备为电动缸， 所述电动缸的振动 驱使所述振动台架和结晶器沿一定轨迹振动， 所述控制装置连接电动缸以控 制电动缸的振动。
与现有技术比较， 电动缸的振动而驱动结晶器振动， 比传统机械式的四 偏心或四连杆式的传动系统结构简单而紧凑， 又不需要液压系统， 现场安装 调试快捷， 可实现振幅和波形的在线自动调整， 可满足现代高效连铸快节奏 的要求。 根据本发明的一个实施例， 所述振动台架为振动台， 所述电动缸为两 个， 驱动所述结晶器沿弧线振动， 该两个电动缸分布在结晶器的内弧一侧和 外弧一侧， 且该两个电动缸的振幅与各自至结晶器振动弧线的曲率中心的距 离成正比， 以保证结晶器实现仿弧振动。
较佳的， 所述两个电动缸的振幅分别满足如下关系：
An=A ( R-Ln ) /R
Aw=A ( R+Lw ) /R
其中， An表示内弧侧电动缸的振幅， Aw表示外弧侧电动缸的振幅， A表 示结晶器的振幅， R表示结晶器振动弧线的半径， Ln表示内弧侧电动缸到外 弧切线的距离， Lw表示外弧侧电动缸到外弧切线的距离， 其中外弧切线为结 晶器振动弧线与结晶器水平中心线交点处的切线。 且控制装置控制所述两个 电动缸同步振动。
较佳的， 还包括底座、 两个板簧及若干滚轮和拉杆， 该两个板簧分布在 所述结晶器下方的左右侧， 每个板簧在外弧端通过上支架固定在振动台上， 在内弧端通过下支架固定在底座上， 限制振动台和结晶器内外弧方向偏摆， 所述滚轮的中心线与结晶器水平中心线平行， 而拉杆的中心线与结晶器水平 中心线垂直， 限制振动台和结晶器左右方向偏摆。
根据本发明的另一个实施例， 所述振动台架为摇臂， 所述电动缸为一 个， 驱动所述结晶器沿弧线振动， 还包括底座， 所述摇臂具有摇臂前轴、 摇 臂中轴、 摇臂支座及摇臂后轴， 所述摇臂支座坐在底座上支撑所述摇臂中 轴， 所述摇臂通过摇臂前轴支撑所述结晶器， 所述电动缸安装在底座上并通 过摇臂后轴驱动所述摇臂和坐在摇臂上的结晶器振动， 结晶器上部的振动靠 摇臂导向， 结晶器下部的的振动靠钢坯或装在结晶器内以引导钢坯从结晶器 拉出的引锭杆导向。 较佳的， 所述结晶器和摇臂处于振动平衡位时摇臂前轴和摇臂中轴的中 心连线指向结晶器振动弧线的曲率中心， 以保证钢坯从结晶器顺畅拉出。 附图说明
本发明如图 1 ~图 2所示。
图 1是含振动台和电动缸的振动系统示意图；
图 la是沿图 1中 A-A线的剖面图；
图 lb是沿图 1中 B-B线的剖面图；
图 2是含摇臂和电动缸的振动系统示意图。 具体实施方式
本发明的第一个实施例如图 1 所示。 第一实施例之振动系统由承托结晶 器 101和驱动结晶器 101振动的振动装置和连接振动装置以控制振动装置振动 的控制装置 105组成。 振动装置包括振动台 102和安装于振动台 102以驱动振 动台 102振动的驱振设备。 结晶器 101坐在振动台 102上。 该驱振设备为安装 在底座 108上驱动振动台 102振动的 2个电动缸 104, 该 2个电动缸 104分布 在结晶器中心线的内弧侧和外弧侧， 电动缸 104的振幅与各自至结晶器振动 弧线的曲率中心的距离成正比， 以保证仿弧振动。 振动台 102和结晶器 101的 重量由 4个长度和刚度相同的坐在底座 108的弹簧套件 103支撑到振动的平衡 高度。 防止结晶器 101偏摆的 2个板簧 106在外弧端通过上支架 106a固定在 振动台 102上， 在内弧端通过下支架 106b固定在底座 108上， 在结晶器 101 和振动台 102处于振动平衡位时板簧 106指向结晶器 101振动弧线的曲率中 心， 以保证钢坯 109从结晶器 101顺畅拉出。 4根拉杆 107和 4组滚轮 110起 辅助导向作用。 控制装置 105产生频率、 偏斜率和振幅在线可调的波形控制 电动缸 104振动， 从而驱动振动台 102和结晶器 101沿一定轨迹振动。 如上所述， 本实施例通过控制电动缸 104 的振幅实现结晶器的仿弧振 动， 为解释说明该电动缸 104的振幅与电动缸 104至结晶器振动弧线的曲率中 心的距离的关系， 先对图 1 进一步标示说明以便于理解， 结晶器振动弧线标 示为 C, 结晶器的水平中心线标示为 XX, 振动弧线 C之与结晶器水平中心线 XX交点处的切线为外弧切线， 以 T标示， 外弧切线 T之振动弧线一侧为内弧 方向， 以 N标示， 相对的另一侧为外弧方向， 以 W标示， 振动弧线 C的曲率 中心 0位于结晶器水平中心线 XX上， 振动弧线的半径为 R, 前述的 2个电 动缸 104分布在结晶器内外弧中心线的的内弧和外弧， 即为 2个电动缸 104分 别安装在结晶器 101的内弧方向一侧和外弧方向一侧。 根据 2个电动缸 104安 装位置离外弧切线 T 的距离分别计算两个电动缸要实现仿弧振动所需的振 幅， 并据以对电动缸进行控制。 在图中， 内弧侧电动缸 104到外弧切线 T的 距离标示为 Ln, 外弧侧电动缸 104到外弧切线 T的距离标示为 Lw, 结晶器 101的振幅为 A, 要实现结晶器仿弧振动， 内弧侧电动缸的振幅 An及外弧侧 电动缸的振幅 Aw需满足如下关系：
An=A ( R-Ln ) /R
Aw=A ( R+Lw ) /R
因为 R-Ln即为内弧侧电动缸至结晶器振动弧线 C的曲率中心 O的距离， R+Lw即为外弧侧电动缸至结晶器振动弧线 C的曲率中心 0的距离， 所以 2 个电动缸 104的振幅与各自至结晶器振动弧线 C的曲率中心 0的距离成正 比。 控制装置 105控制 2个电动缸 104同步振动， 这样能使结晶器 101仿弧振 动。
结合图 la和图 lb所示， 结晶器 101的导向是釆用板簧 106、 拉杆 107和 滚轮 110的结合， 2个板簧 106 (另一个板簧在图 1中所示板簧的背后， 因被 遮挡而在图 1中看不到）分布在结晶器 101下方的左右侧而限制振动台 102和 结晶器 101内外弧方向 WN偏摆。 4组滚轮 110中滚轮的中心线 PP与结晶器 水平中心线 XX平行， 而拉杆 107的中心线 QQ与结晶器水平中心线 XX垂 直， 拉杆 107和滚轮 110限制振动台 102和结晶器 101左右方向偏摆。
另外说明， 图 1所示的第一实施例中用到弹簧套件 103来支撑振动台 102 和结晶器 101 的质量达到平衡， 对于振动质量较小的结晶器不用弹簧套件也 能实现。 所以弹簧套件的用与不用及使用数量并不局限于上述的实施例。 另 外， 进行导向的板簧、 拉杆和滚轮的组合情况也不局限于上述的实施例， 可 以根据实际应用中振动台 102和结晶器 101 的质量及其他方面的要求选择釆 用。
本发明的第二个实施例如图 2所示。 结晶器 201由摇臂 202通过摇臂前轴 202c支撑。 摇臂的支点即摇臂的中轴 202a由坐在底座 205上的摇臂支座 202b 支撑。 坐在底座 205上的电动缸 203通过摇臂后轴 202d驱动摇臂 202和坐在 摇臂 202上的结晶器 201振动。 在结晶器 201和摇臂 202处于振动平衡位时摇 臂前轴 202c和摇臂中轴 202a中心连线的延长线指向结晶器 201振动弧线的曲 率中心， 以保证钢坯 206从结晶器 201顺畅拉出。 结晶器 201 内装有引锭杆 (图未示） ， 钢坯 206成型后由引锭杆引导钢坯 206从结晶器 201拉出。 结晶 器 201振动时结晶器上部的振动靠摇臂 202导向， 结晶器下部的的振动靠引锭 杆或钢坯 206导向。 控制装置 204产生频率、 偏斜率和振幅在线可调的波形控 制电动缸 203驱动结晶器 201振动。
以上结合最佳实施例对本发明进行了描述， 但本发明并不局限于以上揭 示的实施例， 而应当涵盖各种根据本发明的本质进行的修改、 等效组合。

Claims

权利要求
1.一种连铸机结晶器振动系统， 由振动装置和控制装置组成， 所述振动装 置包括承托结晶器的振动台架和安装于振动台架以驱动振动台架振动的驱振 设备， 其特征在于： 所述驱振设备为电动缸， 所述电动缸的振动驱使所述振 动台架和结晶器沿一定轨迹振动， 所述控制装置连接电动缸以控制电动缸的 振动。
2.如权利要求 1所述的系统， 其特征在于： 所述振动台架为振动台， 所述 电动缸为两个， 驱动所述结晶器沿弧线振动， 该两个电动缸分布在结晶器的 内弧一侧和外弧一侧， 且该两个电动缸的振幅与各自至结晶器振动弧线的曲 率中心的距离成正比。
3.如权利要求 2所述的系统， 其特征在于： 所述两个电动缸的振幅分别满 足如下关系：
An=A ( R-Ln ) /R
Aw=A ( R+Lw ) /R
其中， An表示内弧侧电动缸的振幅， Aw表示外弧侧电动缸的振幅， A表 示结晶器的振幅， R表示结晶器振动弧线的半径， Ln表示内弧侧电动缸到外 弧切线的距离， Lw表示外弧侧电动缸到外弧切线的距离， 其中外弧切线为结 晶器振动弧线与结晶器水平中心线交点处的切线。
4.如权利要求 3所述的系统， 其特征在于： 所述控制装置控制所述两个电 动缸同步振动。
5.如权利要求 2所述的系统， 其特征在于： 还包括底座， 所述电动缸安装 在底座上。
6.如权利要求 5所述的系统， 其特征在于： 还包括两个板簧， 该两个板簧 分布在所述结晶器下方的左右侧， 每个板簧在外弧端通过上支架固定在振动 台上， 在内弧端通过下支架固定在底座上。
7.如权利要求 5所述的系统， 其特征在于： 还包括若干滚轮和拉杆， 所述 滚轮的中心线与结晶器水平中心线平行， 而拉杆的中心线与结晶器水平中心 线垂直。
8.如权利要求 1所述的系统， 其特征在于： 所述振动台架为摇臂， 所述电 动缸为一个， 驱动所述结晶器沿弧线振动， 还包括底座， 所述摇臂具有摇臂 前轴、 摇臂中轴、 摇臂支座及摇臂后轴， 所述摇臂支座坐在底座上支撑所述 摇臂中轴， 所述摇臂通过摇臂前轴支撑所述结晶器， 所述电动缸坐在底座上 并通过摇臂后轴驱动所述摇臂和坐在摇臂上的结晶器振动， 结晶器上部的振 动靠摇臂导向， 结晶器下部的的振动靠钢坯或装在结晶器内以引导钢坯从结 晶器拉出的引锭杆导向。
9.如权利要求 8所述的系统， 其特上在于： 所述结晶器和摇臂处于振动平 衡位时摇臂前轴和摇臂中轴的中心连线指向所述结晶器振动弧线的曲率中 心„
10.如权利要求 1 所述的系统， 其特征在于： 所述控制装置产生频率、 偏 斜率和振幅在线可调的波形来控制电动缸驱动结晶器振动。
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CN101147965A (zh) * 2007-06-12 2008-03-26 姜虹 结晶器振动系统
CN102139357B (zh) * 2010-01-29 2013-04-03 宝山钢铁股份有限公司 连铸结晶器多波形电磁激振装置

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