Electromagnetic stirring device and continuous casting machine

Abstract

The utility model provides an electromagnetic stirring device and a continuous casting machine. The electromagnetic stirring device comprises a first magnetizer, a fourth magnetizer, a second magnetizer and a third magnetizer; second electromagnetic stirring rollers with disconnected middle magnetic circuits are respectively arranged between the first magnetizer and the fourth magnetizer and between the second magnetizer and the third magnetizer; the second electromagnetic stirring roller is positioned on the edge of the first gap; and first electromagnetic stirring rollers of which the middle magnetic circuits are communicated are respectively arranged between the first magnetizer and the second magnetizer and between the third magnetizer and the fourth magnetizer. According to the utility model, the four magnetizers and the two electromagnetic stirring rollers are optimized, so that a double-wing rotating magnetic field can be formed in a casting blank, the quality defects such as looseness, central shrinkage, element segregation and cracks can be effectively reduced, and the quality of an H-shaped blank product is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to H type blank continuous casting technical field especially relates to a kind of electromagnetic stirring device and continuous casting machine. BACKGROUND

[0002] H type blank continuous casting machine technology is an important technology of modern steel industry development, and H type continuous casting technology is relatively typical profiled blank continuous casting technology, and the profiled blank of present time is mostly referred to as H type continuous casting blank. Since H type casting blank shape is close to final product, production H type steel not only avoids the problem of unstable quality of welding process, but also greatly reduces rolling link, thereby greatly shortens production flow, reduces energy consumption, and fundamentally reduces production cost. H type blank section shape is relatively complex, so the equipment and process operation of continuous casting process also have its corresponding particularity.

[0003] The existing H type blank continuous casting machine sector structure as shown in Figure 1 It includes flange support roller A, flange support roller B, web support roller C and web support roller D, and E is H type blank schematic. There are uneven internal temperature distribution of continuous casting blank in its production process, which often leads to main quality defects such as loose, center shrinkage, element segregation and crack.

[0004] With the diversification and modernization of engineering construction design, the demand for large section steel will increase substantially, and H type blank continuous casting technology will also show its important position in steel production, so it is of great significance to carry out in-depth research on H type casting blank quality control and process parameter optimization. INVENTION CONTENTS

[0005] In view of the deficiencies of the existing H type blank continuous casting machine, the purpose of the utility model is to provide an electromagnetic stirring device and continuous casting machine, which overcomes the quality defects of the existing H type blank continuous casting technology production.

[0006] The technical scheme of the utility model is: an electromagnetic stirring device, comprising first magnetic conductor and fourth magnetic conductor arranged at intervals in X direction, second magnetic conductor and third magnetic conductor arranged at intervals in X direction, the first magnetic conductor and the second magnetic conductor are arranged at intervals in Y direction to form a first gap, and the fourth magnetic conductor and the third magnetic conductor are arranged at intervals in Y direction to form a first gap;Second electromagnetic stirring roller with intermediate magnetic circuit break is installed between the first magnetic conductor and the fourth magnetic conductor, and between the second magnetic conductor and the third magnetic conductor respectively;Second electromagnetic stirring roller is located at the edge of first gap;

[0007] The first electromagnetic stirring roller and the second electromagnetic stirring roller are installed between the first magnetic conductor and the second magnetic conductor and between the third magnetic conductor and the fourth magnetic conductor, respectively.

[0008] The X direction and the Y direction are perpendicular to each other in the same projection plane.

[0009] Preferably, the first magnetic conductor and the fourth magnetic conductor are symmetrically arranged in the X direction, the first magnetic conductor and the second magnetic conductor are symmetrically arranged in the Y direction, the second magnetic conductor and the third magnetic conductor are symmetrically arranged in the X direction, and the third magnetic conductor and the fourth magnetic conductor are symmetrically arranged in the Y direction.

[0010] Preferably, the first magnetic conductor and the fourth magnetic conductor, the first magnetic conductor and the second magnetic conductor, the second magnetic conductor and the third magnetic conductor, and the third magnetic conductor and the fourth magnetic conductor are connected with non-magnetic mounting frames.

[0011] Preferably, the first magnetic conductor comprises a first wall, a second wall, a third wall and a fourth wall arranged in sequence, the first wall and the third wall are parallel to the same side of the second wall, the second wall and the fourth wall are parallel to the same side of the third wall, and the second gap is provided between the first wall and the fourth wall; the second magnetic conductor, the third magnetic conductor and the fourth magnetic conductor have the same structure as the first magnetic conductor; the first gap is provided between the fourth walls in the same Y direction.

[0012] The first electromagnetic stirring roller is connected to the first wall, and the second electromagnetic stirring roller is connected to the fourth wall.

[0013] Preferably, the length of the fourth wall is longer than the length of the second wall.

[0014] Preferably, the electromagnetic stirring device further comprises a second electromagnetic roller, a third electromagnetic roller, a sixth electromagnetic roller, a seventh electromagnetic roller and a second connecting part.

[0015] One end of the second electromagnetic roller is installed on the first magnetic conductor, one end of the third electromagnetic roller is installed on the second magnetic conductor, and the second connecting part is installed between the other end of the second electromagnetic roller and the other end of the third electromagnetic roller; the second electromagnetic roller, the second electromagnetic roller and the second connecting part form one of the first electromagnetic stirring rollers.

[0016] One end of the sixth electromagnetic roller is installed on the third magnetic conductor, one end of the seventh electromagnetic roller is installed on the fourth magnetic conductor, and the second connecting part is installed between the other end of the sixth electromagnetic roller and the other end of the seventh electromagnetic roller; the sixth electromagnetic roller, the seventh electromagnetic roller and the second connecting part form another first electromagnetic stirring roller.

[0017] Preferably, it further comprises a first electromagnetic roller, a fourth electromagnetic roller, a fifth electromagnetic roller, an eighth electromagnetic roller and a first connecting part;

[0018] One end of the first electromagnetic roller is installed on the first magnetic conductor, one end of the eighth electromagnetic roller is installed on the fourth magnetic conductor, and the first connecting part is installed between the other end of the first electromagnetic roller and the other end of the eighth electromagnetic roller; the first electromagnetic roller, the eighth electromagnetic roller and the first connecting part form one of the second electromagnetic stirring rollers;

[0019] One end of the fourth electromagnetic roller is installed on the second magnetic conductor, one end of the fifth electromagnetic roller is installed on the third magnetic conductor, and the first connecting part is installed between the other end of the fourth electromagnetic roller and the other end of the fifth electromagnetic roller; the fourth electromagnetic roller, the fifth electromagnetic roller and the first connecting part form another second electromagnetic stirring roller.

[0020] The utility model also provides a continuous casting machine comprising the electromagnetic stirring device.

[0021] Compared with the related art, the utility model has the advantages that:

[0022] First, the utility model optimizes four magnetic conductors and two electromagnetic stirring rollers, can form a double-wing rotating magnetic field (the intersection of the first gap and the second gap) in the inside of the casting blank, can effectively reduce quality defects such as loose, center shrinkage, element segregation and crack, and improve H-billet product quality.

[0023] Second, the electromagnetic stirring device can divide the first electromagnetic stirring roller and the second electromagnetic stirring roller into two groups, form two rotating magnetic fields acting on the un-solidified part of the flange casting blank, and meet the characteristics of the H-billet continuous casting machine sector.

[0024] Third, the second connecting part is installed in the middle of the first electromagnetic stirring roller, and the first connecting part is installed in the middle of the second electromagnetic stirring roller, under the condition that the magnetic field strength is large enough, different lengths of connecting parts can be replaced according to the distance between the two magnetic conductors, different casting blank specifications can be produced for the H-billet continuous casting machine, and the utilization rate of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic view of the existing H-billet continuous casting machine sector structure.

[0026] Figure 2The utility model provides an electromagnetic stirring device's structure schematic view is provided.

[0027] Figure 3 It is electromagnetic stirring flow field schematic view.

[0028] In the drawing: 11, first magnetic conductor;111, first wall;112, second wall;113, third wall;114, fourth wall;12, second magnetic conductor;13, third magnetic conductor;14, fourth magnetic conductor;2, first electromagnetic stirring roller;3, second electromagnetic stirring roller;4, mounting frame;5, first gap;6, second gap;21, first electromagnetic roller;22, second electromagnetic roller;23, third electromagnetic roller;24, fourth electromagnetic roller;25, fifth electromagnetic roller;26, sixth electromagnetic roller;27, seventh electromagnetic roller;28, eighth electromagnetic roller;31, first connecting part;32, second connecting part. DETAILED DESCRIPTION

[0029] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words such as 'up', 'down', 'left', 'right' appear in the following text, they only indicate the same direction as the up, down, left and right of the drawing itself, and do not limit the structure.

[0030] As Figure 2 The utility model provides an electromagnetic stirring device, which includes first magnetic conductor 11 and fourth magnetic conductor 14 arranged at intervals in the X direction, and second magnetic conductor 12 and third magnetic conductor 13 arranged at intervals in the X direction. The first magnetic conductor 11 and the second magnetic conductor 12 are arranged at intervals in the Y direction. The fourth magnetic conductor 14 and the third magnetic conductor 13 are arranged at intervals in the Y direction. The X direction and the Y direction are perpendicular to each other in the same top view projection plane. The first magnetic conductor 11, the second magnetic conductor 12, the third magnetic conductor 13 and the fourth magnetic conductor 14 are made of carbon steel material, which is the same as the material of the original flange support roller A, the flange support roller B, the web support roller C and the web support roller D. The four magnetic conductors form a closed effective magnetic path (as shown in Figure 3

[0031] ​The first magnetic conductor 11 comprises a first wall 111, a second wall 112, a third wall 113 and a fourth wall 114 arranged in sequence. The first wall 111 and the third wall 113 are parallel to the same side of the second wall 112, and the second wall 112 and the fourth wall 114 are parallel to the same side of the third wall 113. The length of the fourth wall 114 is longer than the length of the second wall 112. The second magnetic conductor 12, the third magnetic conductor 13 and the fourth magnetic conductor 14 have the same structure as the first magnetic conductor 11. The second gap 6 is formed between the first wall 111 and the fourth wall 114 of the first magnetic conductor 11. One end of the first gap 5 is formed between the fourth wall 114 of the first magnetic conductor 11 and the fourth wall 114 of the second magnetic conductor 12. The other end of the first gap 5 is formed between the fourth wall 114 of the third magnetic conductor 13 and the fourth wall 114 of the fourth magnetic conductor 14. The second electromagnetic stirring roller 3 with an intermediate magnetic circuit disconnected is installed between the fourth wall 114 of the first magnetic conductor 11 and the fourth wall 114 of the fourth magnetic conductor 14. The second electromagnetic stirring roller 3 with an intermediate magnetic circuit disconnected is installed between the fourth wall 114 of the second magnetic conductor 12 and the fourth wall 114 of the third magnetic conductor 13, and the middle part of the first gap 5 is formed between the two second electromagnetic stirring rollers 3.

[0032] The first electromagnetic stirring roller 2 with an intermediate magnetic circuit connected is installed between the first wall 111 of the first magnetic conductor 11 and the first wall 111 of the second magnetic conductor 12, and between the first wall 111 of the third magnetic conductor 13 and the first wall 111 of the fourth magnetic conductor 14. The second gap 6 extending in the Y direction is arranged in the first magnetic conductor 11 and the second magnetic conductor 12, and the second gap 6 extending in the Y direction is arranged in the third magnetic conductor 13 and the fourth magnetic conductor 14. The first electromagnetic stirring roller 2 is located at the edge of the second gap 6 away from the first gap 5.

[0033] The first magnetic conductor 11 and the fourth magnetic conductor 14 are symmetrically arranged in the X direction, the first magnetic conductor 11 and the second magnetic conductor 12 are symmetrically arranged in the Y direction, the second magnetic conductor 12 and the third magnetic conductor 13 are symmetrically arranged in the X direction, and the third magnetic conductor 13 and the fourth magnetic conductor 14 are symmetrically arranged in the Y direction.

[0034] The mounting frame 4 which is not magnetically conductive is connected between the first magnetic conductor 11 and the fourth magnetic conductor 14, between the first magnetic conductor 11 and the second magnetic conductor 12, between the second magnetic conductor 12 and the third magnetic conductor 13, and between the third magnetic conductor 13 and the fourth magnetic conductor 14. The mounting frame 4 is made of stainless steel, and the frame support structure of the original structure of the continuous casting machine sector needs to be changed to stainless steel which is not magnetically conductive.

[0035] The electromagnetic stirring device further comprises a second electromagnetic roller 22, a third electromagnetic roller 23, a sixth electromagnetic roller 26, a seventh electromagnetic roller 27, a second connecting part 32, a first electromagnetic roller 21, a fourth electromagnetic roller 24, a fifth electromagnetic roller 25, an eighth electromagnetic roller 28 and a first connecting part 31.

[0036] One end of the second electromagnetic roller 22 is installed on the first wall 111 of the first magnetic conductor 11, one end of the third electromagnetic roller 23 is installed on the first wall 111 of the second magnetic conductor 12, and the second connecting part 32 is installed between the other end of the second electromagnetic roller 22 and the other end of the third electromagnetic roller 23. The second electromagnetic roller 22, the second electromagnetic roller 22 and the second connecting part 32 form one of the first electromagnetic stirring rollers 2.

[0037] One end of the sixth electromagnetic roller 26 is installed on the first wall 111 of the third magnetic conductor 13, one end of the seventh electromagnetic roller 27 is installed on the first wall 111 of the fourth magnetic conductor 14, and the second connecting part 32 is installed between the other end of the sixth electromagnetic roller 26 and the other end of the seventh electromagnetic roller 27. The sixth electromagnetic roller 26, the seventh electromagnetic roller 27 and the second connecting part 32 form the other of the first electromagnetic stirring rollers 2.

[0038] One end of the first electromagnetic roller 21 is installed on the fourth wall 114 of the first magnetic conductor 11, one end of the eighth electromagnetic roller 28 is installed on the fourth wall 114 of the fourth magnetic conductor 14, and the first connecting part 31 is installed between the other end of the first electromagnetic roller 21 and the other end of the eighth electromagnetic roller 28. The first electromagnetic roller 21, the eighth electromagnetic roller 28 and the first connecting part 31 form one of the second electromagnetic stirring rollers 3.

[0039] One end of the fourth electromagnetic roller 24 is installed on the fourth wall 114 of the second magnetic conductor 12, one end of the fifth electromagnetic roller 25 is installed on the fourth wall 114 of the third magnetic conductor 13, and the first connecting part 31 is installed between the other end of the fourth electromagnetic roller 24 and the other end of the fifth electromagnetic roller 25. The fourth electromagnetic roller 24, the fifth electromagnetic roller 25 and the first connecting part 31 form the other of the second electromagnetic stirring rollers 3.

[0040] The second connecting part 32 is a silicon steel sheet, which can communicate between the second electromagnetic roller 22 and the third electromagnetic roller 23, and between the sixth electromagnetic roller 26 and the seventh electromagnetic roller 27. The first connecting part 31 is a non-magnetic stainless steel, which needs to break the magnetic circuit between the first electromagnetic roller 21 and the eighth electromagnetic roller 28, and between the fourth electromagnetic roller 24 and the fifth electromagnetic roller 25. The breaking and connecting mode of the first connecting part 31 and the second connecting part 32 effectively reduces the eddy current loss and the hysteresis loss, and can maximize the magnetic field strength.

[0041] The first electromagnetic stirring roller 2 and the second electromagnetic stirring roller 3 are connected with the alternating current, the first electromagnetic roller 21, the second electromagnetic roller 22, the third electromagnetic roller 23 and the fourth electromagnetic roller 24 form a group, the fifth electromagnetic roller 25, the sixth electromagnetic roller 26, the seventh electromagnetic roller 27 and the eighth electromagnetic roller 28 form another group, the two groups simultaneously excite the rotating magnetic field, generate the electromagnetic force, and directly act on the liquid core part of the flange, and form the double-wing rotating magnetic field (as shown in Figure 3

[0042] The magnetic field has the characteristic that a loop with the minimum magnetic resistance and the shortest path is automatically selected in space, in order to make the first electromagnetic roller 21, the second electromagnetic roller 22, the third electromagnetic roller 23 and the fourth electromagnetic roller 24 form a closed effective magnetic path through the first magnetic conductor 11 and the second magnetic conductor 12, and simultaneously make the fifth electromagnetic roller 25, the sixth electromagnetic roller 26, the seventh electromagnetic roller 27 and the eighth electromagnetic roller 28 form a closed effective magnetic path through the third magnetic conductor 13 and the fourth magnetic conductor 14, it is required to disconnect the magnetic path between the first magnetic conductor 11, the second magnetic conductor 12, the third magnetic conductor 13 and the fourth magnetic conductor 14, therefore, the mounting frame 4 which does not conduct the magnetic field is mounted between the magnetic conductors.

[0043] The first electromagnetic roller 21, the second electromagnetic roller 22, the third electromagnetic roller 23, the fourth electromagnetic roller 24, the fifth electromagnetic roller 25, the sixth electromagnetic roller 26, the seventh electromagnetic roller 27 and the eighth electromagnetic roller 28 all include the iron core and the coil wound on the iron core, and the iron core is connected with the corresponding magnetic conductor and the connecting part.

[0044] As shown in Figure 3 As shown in the drawings, in the liquid core part of the two side flanges of the casting blank E, two rotating magnetic fields 51 and 52 are formed through the action of the electromagnetic stirring roller, the temperature and the steel liquid composition in the casting blank E can be uniformly distributed, and the H-shaped blank quality defect is reduced. The electromagnetic stirring parameters are as follows: current 200A-600A, frequency 1Hz-10Hz.

[0045] The utility model also provides a continuous casting machine, including above-mentioned electromagnetic stirring device, utilize the bearing seat of continuous casting machine support roll and adjacent sector segment frame part link together.

[0046] ​This invention proposes a magnetic circuit structure design method by replacing the middle part (first connecting part 31 and second connecting part 32) of the electromagnetic stirring roller and utilizing the structural characteristics of the sector segment itself. This method can adapt to different models and specifications of H-bill continuous casting machines. Considering the special characteristics of the H-bill continuous casting process, the coil parts of the electromagnetic stirring roller are combined to form a double-wing rotating magnetic field, which efficiently stirs the liquid core of the billet, compensating for the shortcomings of the H-bill continuous casting process and effectively improving the surface, subsurface, and internal quality of the billet, such as central cracks, central porosity, central shrinkage cavities, and central segregation. This technology has advantages such as high energy density, high cleanliness, high reliability, and strong interchangeability, which is of great significance for improving billet quality and increasing production efficiency, making steel products more competitive in the market.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electromagnetic stirring device characterized by comprising: The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction.

2. The electromagnetic stirring device of claim 1, wherein The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction.

3. The electromagnetic stirring device of claim 1, wherein The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction.

4. Electromagnetic stirring device according to any one of claims 1-3, characterized in that The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction.

5. The electromagnetic stirring device of claim 4, wherein The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic conductor (14) are arranged symmetrically in the X direction, the first magnetic conductor (11) and the second magnetic conductor (12) are arranged symmetrically in the Y direction, the second magnetic conductor (12) and the third magnetic conductor (13) are arranged symmetrically in the X direction, and the third magnetic conductor (13) and the fourth magnetic conductor (14) are arranged symmetrically in the Y direction. The first magnetic conductor (11) and the fourth magnetic 6. The electromagnetic stirring device according to any one of claims 1 to 3, characterized in that It also includes a second electromagnetic roller (22), a third electromagnetic roller (23), a sixth electromagnetic roller (26), a seventh electromagnetic roller (27) and a second connecting part (32); One end of the second electromagnetic roller (22) is installed on the first magnetic conductor (11), one end of the third electromagnetic roller (23) is installed on the second magnetic conductor (12), and the second connecting part (32) is installed between the other end of the second electromagnetic roller (22) and the other end of the third electromagnetic roller (23); the second electromagnetic roller (22), the second electromagnetic roller (22) and the second connecting part (32) form one of the first electromagnetic stirring rollers (2); One end of the sixth electromagnetic roller (26) is installed on the third magnetic conductor (13), one end of the seventh electromagnetic roller (27) is installed on the fourth magnetic conductor (14), and the second connecting part (32) is installed between the other end of the sixth electromagnetic roller (26) and the other end of the seventh electromagnetic roller (27); the sixth electromagnetic roller (26), the seventh electromagnetic roller (27) and the second connecting part (32) form another first electromagnetic stirring roller (2).

7. The electromagnetic stirring device according to any one of claims 1 to 3, characterized by It also includes a first electromagnetic roller (21), a fourth electromagnetic roller (24), a fifth electromagnetic roller (25), an eighth electromagnetic roller (28) and a first connecting part (31); One end of the first electromagnetic roller (21) is installed on the first magnetic conductor (11), one end of the eighth electromagnetic roller (28) is installed on the fourth magnetic conductor (14), and the first connecting part (31) is installed between the other end of the first electromagnetic roller (21) and the other end of the eighth electromagnetic roller (28); the first electromagnetic roller (21), the eighth electromagnetic roller (28) and the first connecting part (31) form one of the second electromagnetic stirring rollers (3); One end of the fourth electromagnetic roller (24) is installed on the second magnetic conductor (12), one end of the fifth electromagnetic roller (25) is installed on the third magnetic conductor (13), and the first connecting part (31) is installed between the other end of the fourth electromagnetic roller (24) and the other end of the fifth electromagnetic roller (25); the fourth electromagnetic roller (24), the fifth electromagnetic roller (25) and the first connecting part (31) form another second electromagnetic stirring roller (3).

8. A continuous caster characterized by, It includes the electromagnetic stirring device as claimed in any one of claims 1-7.

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