• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. A DEVICE FOR MIXING LIQUID METAL mainly in the secondary cooling zone of a continuous casting plant of billets, made in the form of a roller with a fixed shaft of non-magnetic material, the shaft having annular grooves in length / in which annular induction coils and conductors are located, they differ. so that, in order to concentrate the magnetic flux, reduce the magnetic loss. the floor and increase the power of the device, it is equipped with a magnetic core, and in a fixed shaft there is a longitudinal cutout facing the workpiece in which the specified core is placed. WITH
    公开号:SU1114325A3
    申请号:SU813353429
    申请日:1981-11-04
    公开日:1984-09-15
    发明作者:Делассю Жан
    申请人:Сем-Компани Электро-Меканик (Фирма)；
    IPC主号:
    专利说明:

    2. The device according to claim 1, characterized in that longitudinal grooves and channels for accommodating current-carrying and current-carrying,
    induction coil conductors.
    3. A device according to Claims 1 and 2, characterized in that the induction coils are made in the form of a two-phase biopolar inductor.
    The invention relates to metallurgy, and more specifically to continuous melting of metals and alloys. A device is known for mixing liquid metal in the secondary cooling zone of a continuous casting plant of billets made in the form of a roller with an inductor placed in it, while the inductor has a magnetic core in the form of a shaft made of magnetic stainless steel with longitudinal grooves in which packages of flat magnetic sheets are placed parallel to the shaft axis. On the shaft there are also annular grooves in which the induction coils ij are located. However, this device has insufficient power, since the radiation of the magnetic field is distributed in all directions around the axis of the roller. The closest to the technical result and the achieved result are devices for mixing liquid metal in the secondary cooling zone of a non-continuous casting installation, made in the form of a roller with a fixed shaft of non-magnetic material, and the shaft has annular grooves in which there are annular induction coils and conductors 2. However, the known device is characterized by dispersion of the magnetic flux, large losses of the magnetic field and insufficient power. The purpose of the invention is to concentrate the magnetic flux, reduce the loss of the magnetic field and increase the power of the device. I set the goal by the fact that the device for mixed liquid metal is predominantly in the secondary cooling zone of the continuous casting plant, made in the form of a roller with a stationary shaft of non-magnetic material, the shaft having annular recesses along its length. And then the cables are equipped with a magnetic core, and in the stationary shaft there is a longitudinal notch facing the workpiece in which the specified core is placed. Longitudinal grooves and channels are made in the fixed shaft. To accommodate the current-carrying and current leads of the induction coils. Induction coils are made in the form of a biopolar inductor. Figure 1 shows the device, a general view; figure 2 - section aa in figure 1; on fig.Z - scheme of winding induction coils. The device for mixing the molten metal in the secondary cooling zone of the continuous casting plant is made in the form of a roller 1 containing a hollow cylindrical body 2 of non-magnetic stainless steel in which the inductor 3 and a stationary shaft 4 of a non-magnetic material with good electrical conductivity are placed, for example, aluminum to the right or copper alloy. In the shaft 4 is a longitudinal cut. 5, in which the magnetic core 6 of the indicator 3 is placed. The magnetic core b consists of a package of thin sheets isolated from one another and is turned with its free surface 7 towards the molded workpiece 8 with liquid metal 9. In the shaft 4 and the magnetic core b there are annular grooves 10, in which annular induction coils 11 are placed, made for example of coils of flat insulated copper conductor, longitudinal grooves 12 and channels 13 for accommodating the current lead and current lead are also made in the fixed shaft 4 The inductor coils 11, induction coils 11, induction coils 11 are divided into two groups, in which the coils are wound in alternating directions, are in series electrically interconnected and connected by means of conductors 14 with an alternating two-phase current source. Extreme induction coils 11 are approximately two times less turns than the average. A device for mixing the molten metal works as follows. In the process of drawing the preform 8 with the liquid metal 9, it is affected by the magnetic field created by the inductor 3. If the current is maximum in the first phase and is zero in the second phase, then the magnetic flux has the form shown in FIG. The presence of a fixed shaft 4 of a non-magnetic metal with good electrical conductivity creates an effective shield that prevents the magnetic flux from reaching the back side of the induction device due to currents induced in the shaft 4 If the current reaches a maximum in the second phase and is zero in the first (phase, The leakage of the magnetic flux to the rear side of the inductive device is eliminated due to the presence of a fixed shaft 4, which is a sn screen. Magnetic flux leaks on the sides of the magnetic core 6, i.e., the magnetic flux is concentrated in the eC angle, which is the useful mixing angle for the metal.If the two phases are fed sequentially and periodically with a low frequency, then a running magnetic field is obtained intersect the core of the workpiece 8, causing mixing of the liquid metal 9. Although the embodiment described above relates to a two-phase bipolar / inductor, it can be used for a multi-phase inductor with several Kimi poles. Thus, the proposed device allows the use of a maximum magnetic flux-power inductor for mixing the molten metal of the cast billet, 5-6 times higher than the power of the known induction devices.
    eight

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    权利要求:
    Claims (3)
    [1]
    1. A DEVICE FOR MIXING A LIQUID METAL mainly in the aeon of secondary cooling of a continuous casting unit, made in the form of a roller with a fixed shaft of non-magnetic material, the shaft having annular recesses along which ring induction coils and current conductors are located, differing the fact that, in order to concentrate the magnetic flux, reduce magnetic losses. field and increase the power of the device, it is equipped with a magnetic core, and a longitudinal cutout is made in the fixed shaft., facing the blank, in which the specified core is placed.
    Fiε 1
    [2]
    2. The device according to claim 1, characterized in that in the fixed shaft there are longitudinal grooves and channels for accommodating the current-carrying and current-conducting conductors of the induction coils.
    [3]
    3. The device according to claims 1 and 2, characterized in that the induction coils are made in the form of a two-phase biopolar inductor.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR2494642A1|1982-05-28|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
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