• 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:
    The present invention is directed to an induction coil system for variable width casting during semi-contact electromagnetic continuous casting of steel slabs, and includes a plurality of bar-shaped long-side coils installed on the long sides of a mold in a semi-contact electromagnetic continuous casting machine for steel slabs. And a plurality of bar-shaped short side coils provided at the short side of the mold, and a plurality of flexible coils connecting the long side coils and the short side coils, wherein each of the long side coils includes: Variation of the width of the short side part is because the two sides of the longitudinal direction has a ring that slides along the length direction, and these rings are integrally connected, and the integrally connected ring is connected to the short side through a connecting member. The length of the long side coil to which the current is applied is varied by bringing the movement along the long side coil of the ring. An induction coil system for variable width casting is disclosed.
    公开号:KR19980053470A
    申请号:KR1019960072576
    申请日:1996-12-26
    公开日:1998-09-25
    发明作者:임창희；정상익
    申请人:김종진；포항종합제철 주식회사；
    IPC主号:
    专利说明:

    Induction coil system for variable width casting in semi-contact electromagnetic continuous casting of steel slabs
    The present invention relates to a coil system for variable width casting in semi-contact electromagnetic continuous casting of steel slab, and more particularly, a coil capable of uniformly obtaining soft contact electromagnetic casting effect on all slab surfaces during variable width slab casting. It's about the system.
    In the case of continuous electromagnetic casting, the distribution of magnetic flux density along all edges of the slab should be uniform so that the electromagnetic repulsive force is uniform on all surfaces of the slab, thereby preventing the surface defects caused by soft contact casting.
    The magnetic flux density (B) is the current density (J coil ) flowing in the coil volume (dV coil ) at the position (r coil ) closest to the desired position (r) by the Biot Savart law expressed by the following equation. Dominated by
    [expression]

    Therefore, in order to obtain the soft contact electromagnetic casting effect uniformly on all slab surfaces during variable width slab casting, the distance between the coil and the slab surface should be kept the same on all sides of the slab. When the width of the mold is reduced to cast a narrow slab, the magnetic flux density at the short side and the edge of the slab is significantly weakened and the desired continuous casting effect cannot be obtained.
    Therefore, there is a need for a semi-contact electromagnetic continuous casting system capable of maintaining the same distance between the coil and the slab surface on all sides of the slab during variable width slab casting.
    It is an object of the present invention to provide a coil system capable of uniformly obtaining a soft contact electromagnetic casting effect on all slab surfaces during variable width slab casting.
    The object of the present invention is a semi-contact electromagnetic continuous casting machine of steel slab, a plurality of bar-shaped long side coils provided on the long side of the mold, a plurality of bar-shaped short side coils provided on the short side of the mold and And a plurality of flexible coils connecting the respective long side coils and the short side coils, wherein each of the long side coils has a ring that slides along the length direction on both sides of the length direction thereof, and these rings They are integrally connected, and the integrally connected ring is connected to the short side side through a connecting member, so that the change in the width of the short side part causes a movement along the long side coil of the ring, so that a current is applied. It is achieved by an induction coil system for variable width casting, characterized in that the length of the coil is also variable.
    1 is a perspective view of a coil system in the present invention;
    2 is a side view of the coil system of FIG. 1;
    3 is a cross-sectional view taken along the line A-B of FIG.
    4 is a view showing an example in which a coil is installed at a long side of a mold;
    5 is a top view of the coil system of FIG. 1;
    6 is a view showing a C-D line portion and a cross section thereof of FIG.
    (Explanation of symbols for the main parts of the drawing)
    1: Long side of mold 2: Short side of mold 3: Long side coil
    4: Short side coil 5: Flexible coil 6: Notice
    14: connecting member
    Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
    1 is a perspective view of a coil system 100 according to the present invention. In the present invention, the induction coil is composed of bars (bars) (3, 4), each is installed in the longitudinal direction on the long side portion (1) and the short side portion (2) of the mold. In addition, the long side coil 3 and the short side coil 4 are connected by a flexible coil 5. The coil is thus continuously connected along the circumference of the mold. In addition, the coil 3 of the long side portion is provided with a contact ring 6 which slides along the longitudinal direction of the coil, which is connected to the short side portion by the connecting member 14. Due to this structure, as the width between the short sides 2 is variable, the length of the long side coil 3 to which the current is applied is also changed, so that uniform soft contact electromagnetic effects are applied at all sides of the slab. You can get it. For convenience, the connecting member 14 is shown only for one corner of the mold, but as can be seen with reference to Figure 5 is installed in all four corners.
    2 and 3 show an example in which the short side coil 4 is installed on the short side 2. First, in FIG. 2, it is seen that the short side coil 4 is installed on the short side 2 by the coil support plate 10 and the flexible coil 5 is connected to each short side coil 4. As shown in FIG. 3, which is a cross-sectional view along the AB line of FIG. 2, the short side coil 4 abuts coil support plates 9 and 10 on both sides and fastens studs 8 therethrough with nuts 12. The stud 8 is coupled to the short side 2 by welding to the short side 2. In addition, the coil support 11 having the same shape as the short side coil is installed between the short side coil 4 so that the short side coil 4 is stably supported on the short side 2. The material of the coil support plates 9 and 10 should be non-conductive, and a heat resistant material such as ceracic is preferable. Thus, by attaching the short side part coil 4 to the short side part 2, when adjusting the width | variety of a mold, the coil 4 also moves simultaneously with the mold 2 at regular intervals.
    4 shows that the long side coil is disposed in the long side 1 of the mold. As shown, each long side coil has a ring 6 slid along its longitudinal direction on both sides of its longitudinal direction and the ring is connected to a flexible coil 5. As mentioned, the short side coil 4 of the short side 2 is also connected to the flexible coil 5, so that induction coils are continuously connected along the mold periphery. The long side coil 3 may be coupled in the same form as in the short side using coil supporting plates 9 'and 10' provided in the middle of the coil (see FIG. 5).
    Now, referring to FIG. 6 showing the CD line portion and the cross section of FIG. 4 in FIGS. Let's do it. First, the ring 6 provided in each long side coil 3 is connected by the holder 13 and moved as a single body. The holder 13 is made of a heat resistant material such as ceramic, and is sufficient in structure to connect the respective rings 6. The holder 13 is connected to the coil support plate 9 or 10 at the short side through the connecting member 14. Therefore, when the width of the short side portion 2 is variable, the long side portion 6 is moved along the longitudinal direction of the long side coil 3, so that the length of the long side coil to which the current is applied is variable. In this embodiment, by providing the guide rail 15 with respect to the holder 13 which integrates the ring 6, the movement of the holder 13 and the movement of the ring 6 by this are made easy.
    As such, the present invention provides an induction coil system that makes it possible to obtain a soft contact electromagnetic casting effect uniformly on all slab surfaces during variable width slab casting.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] In the semi-contact electromagnetic continuous casting machine of steel slab, a plurality of bar-shaped long side coils provided on the long side of the mold, a plurality of bar-shaped short side coils provided on the short side of the mold, and the respective long side parts And a plurality of flexible coils connecting the coil and the short side coil, wherein each of the long side coils has a ring that slides along the length direction on both sides of the length direction, and these rings are integrally connected. Since the integrally connected ring is connected to the short side through a connecting member, the change in the width of the short side causes a shift along the long side coil of the ring so that the length of the long side coil to which a current is applied is also changed. Induction coil system for variable width casting.
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    同族专利:
    公开号 | 公开日
    KR100269594B1|2000-10-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-12-26|Application filed by 김종진, 포항종합제철 주식회사
    1996-12-26|Priority to KR1019960072576A
    1998-09-25|Publication of KR19980053470A
    2000-10-16|Application granted
    2000-10-16|Publication of KR100269594B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019960072576A|KR100269594B1|1996-12-26|1996-12-26|Variable width casting for induction coil device|
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