A traveling wave electromagnetic stirrer for metallurgy

Abstract

The present invention relates to the technical field of electromagnetic stirrer equipment, and specifically to a traveling wave electromagnetic stirrer for metallurgy, comprising a traveling wave electromagnetic stirrer body and a body inlet and outlet water pipe and a cable installed on the traveling wave electromagnetic stirrer body. The traveling wave electromagnetic stirrer bodies are provided with two bodies, which are arranged relatively to each other. By adjusting the width W of a middle adjustment plate and the thickness H of an upper adjustment plate of a mounting seat assembly, the traveling wave electromagnetic stirrer bodies installed opposite to each other are adapted to different sizes of ingots. When different ingots are produced, the traveling wave electromagnetic stirrer bodies are close to the ingots, so that the magnetic induction intensity at the center of the ingot is high, efficient traveling wave stirring is achieved, and the quality of the ingots is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic stirrer equipment, in particular to a traveling wave electromagnetic stirrer used in metallurgy. Background Art

[0002] At present, installing an electromagnetic stirrer on a slab continuous casting machine has a good electromagnetic metallurgical effect. It is used to increase the equiaxed crystal rate of the ingot and reduce the central porosity and segregation of the ingot. It is a commonly used method of electromagnetic metallurgy for slab continuous casting.

[0003] Most of the electromagnetic stirrers for square and round billets are circular, and the molten steel forms a rotating vortex through the rotation of the magnetic field. The electromagnetic stirrer with a rotating magnetic field has the problem of excessive stirring, which causes the equiaxed crystals to gather centrifugally at the front and aggravate the central segregation. The traveling wave electromagnetic stirring promotes the flow of steel in the longitudinal direction and promotes the uniformity of temperature and composition.

[0004] Among the existing patents and technologies, the application number is CN202410147995.8, which discloses a special-shaped iron core type high-energy continuous casting traveling wave linear electromagnetic stirrer, including a yoke, a special-shaped iron core and an induction coil. The yoke is a cylindrical structure, which mainly generates a linear traveling wave magnetic field through a cylindrical coil, generates a linear thrust on the molten steel, and generates linear stirring. However, this structure has defects: 1. The specifications of the ingots produced by general continuous casting machines are relatively large. In order to improve the efficiency of the linear stirrer, the inner diameter of the stirrer needs to be close to the ingot, so the specifications of the stirrer are relatively large; 2. The cylindrical coil of the linear stirrer causes the electromagnetic wire length of the stirrer to be too long, the resistance and inductance are relatively large, the stirrer voltage is too large, or the frequency is too low, the stirring force is difficult to guarantee, and the temperature rise is too large, and the heat dissipation water system is overloaded.

[0005] With the development of the steel industry, the specifications of a continuous casting machine are diverse, such as the billet sizes of 150mm×150mm, 180mm×180mm, 220mm×220mm, 250mm×250mm, φ180mm, φ200mm, φ250mm are all produced on the same continuous casting machine. As we all know, the closer the stirrer is to the billet, the higher the stirring efficiency, the smaller the stirring power, and the more energy-saving. For this reason, we propose a traveling wave electromagnetic stirrer for metallurgy. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a traveling wave electromagnetic stirrer for metallurgy, comprising a traveling wave electromagnetic stirrer body and a body inlet and outlet water pipe and a cable installed on the traveling wave electromagnetic stirrer body, wherein the traveling wave electromagnetic stirrer body has two bodies which are arranged opposite to each other, and further comprises:

[0007] Mounting plates, which have two sets and are respectively fixed at the bottom ends of the two traveling wave electromagnetic stirrer bodies;

[0008] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said adjusting base is connected to said adjusting base by said adjusting screw threading machine, and said adjusting screw threading machine is connected to said adjusting screw threading machine via said screw threading machine. said adjusting base is connected to said adjusting screw threading machine via said adjusting screw threading machine. said adjusting base is connected to said adjusting screw threading machine via said adjusting screw threading machine.

[0009] Preferably, the mounting seat assembly also includes a plurality of screw holes opened on the dovetail track, a first bolt is installed through the dovetail fixing block, a second bolt is installed through the dovetail slide, each dovetail slide has four second bolts, and are located at the four corners of the dovetail slide, and the upper part of the second bolt passes through the upper adjustment plate and the mounting plate.

[0010] Preferably, the width of the middle adjustment plate is equal to the width of the ingot, and the rule is that for every 2 mm increase in the ingot width, the width of the middle adjustment plate increases by 2 mm, and the thickness of the upper adjustment plate increases by 1 mm.

[0011] Preferably, the upper adjustment plate has four different sizes with thicknesses of 20 mm, 35 mm, 55 mm and 70 mm, and the middle adjustment plate has four different sizes with widths of 150 mm, 180 mm, 220 mm and 250 mm.

[0012] Preferably, a protective plate assembly is installed on each of the two traveling wave electromagnetic stirrer bodies to limit the distance between the traveling wave electromagnetic stirrer body and the ingot, the protective plate assembly includes fixed ear plates fixed on both sides of the traveling wave electromagnetic stirrer body, a clamping plate is provided on one side of the traveling wave electromagnetic stirrer body, a mounting ear plate is fixed on the clamping plate, a protective plate water inlet and outlet pipe is provided on the clamping plate, and the mounting ear plate and the fixed ear plate can be engaged with each other.

[0013] Preferably, an inductor is provided in the body of the traveling wave electromagnetic stirrer. The inductor is divided into three parts, namely an iron core, a coil and a magnetic pole. The two inductors on the body of the traveling wave electromagnetic stirrer are installed opposite to each other and both face the ingot.

[0014] Preferably, the power supply of the traveling wave electromagnetic stirrer body is two-phase alternating current, and is electrically connected to the electric control system, the phase angle between phase A and phase B is 90 degrees, and the switching of phase A and phase B by the electric control system is used to achieve switching of the stirring force.

[0015] Preferably, the electromagnetic wire used in the coil is a flat wire.

[0016] The present invention has at least the following beneficial effects:

[0017] 1. By adjusting the width W of the middle adjustment plate and the thickness H of the upper adjustment plate of the mounting seat assembly, the opposing traveling wave electromagnetic stirrer bodies are suitable for billets of different sizes. When different billets are produced, the traveling wave electromagnetic stirrer bodies are close to the billets, so that the magnetic induction intensity at the center of the billet is high, efficient traveling wave stirring is achieved, and the billet quality is improved;

[0018] 2. When the coil length and the core thickness are fixed, the optimal flat wire size is implemented, and the optimal electromagnetic thrust of the traveling wave stirrer body is achieved through the saturation of the core, the layer thickness and the number of turns of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall installation of the present invention;

[0020] Figure 2 This is a schematic diagram of an exploded view of a protective plate assembly of the present invention;

[0021] Figure 3 It is an exploded schematic diagram of the mounting base assembly of the present invention;

[0022] Figure 4 It is a side view of the present invention;

[0023] Figure 5 It is a front view of the present invention;

[0024] Figure 6 A top view of the present invention;

[0025] Figure 7 AA cross-sectional view of the traveling wave electromagnetic stirrer body of the present invention;

[0026] Figure 8 BB is a cross-sectional view of the traveling wave electromagnetic stirrer body of the present invention;

[0027] Fig. 9 It is an adjustment diagram of the mounting seat assembly when the size of the casting billet is changed in the present invention;

[0028] Fig.10 is the wiring diagram of the present invention;

[0029] Fig.11 It is a simulation diagram of the magnetic induction intensity vector of the traveling wave electromagnetic stirrer body of the present invention;

[0030] Fig.12 This is a thrust simulation diagram of the traveling wave electromagnetic stirrer body of the present invention.

[0031] In the figure: 1. traveling wave electromagnetic stirrer body; 11. mounting plate; 12. water inlet and outlet pipes of the body; 13. cable; 14. fixing ear plate; 15. inductor; 151. iron core; 152. coil; 153. magnetic pole; 2. protective plate assembly; 21. mounting ear plate; 22. water inlet and outlet pipes of the protective plate; 23. clamping plate; 3. mounting seat assembly; 31. upper adjustment plate; 32. dovetail track; 33. middle adjustment plate; 34. dovetail slide; 35. dovetail fixing block; 36. first bolt; 37. second bolt. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0033] See also Figure 1-12 The present invention provides an embodiment: a traveling wave electromagnetic stirrer for metallurgy, comprising a traveling wave electromagnetic stirrer body 1 and a body inlet and outlet water pipe 12 and a cable 13 installed on the traveling wave electromagnetic stirrer body 1, the traveling wave electromagnetic stirrer body 1 has two, and is arranged relatively, and further comprises:

[0034] Mounting plates 11, there are two sets of mounting plates 11, which are respectively fixed at the bottom ends of the two traveling wave electromagnetic stirrer bodies 1;

[0035] The mounting seat assembly 3 is arranged on the slab continuous casting machine, and includes an upper adjustment plate 31 installed at the bottom of the mounting plate 11. There are a plurality of upper adjustment plates 31, and the thicknesses of the upper adjustment plates 31 are all different. A dovetail track 32 is installed on the slab continuous casting machine. There are two dovetail tracks 32, which are arranged opposite to each other. The top shape of the dovetail track 32 is an inverted trapezoid. An intermediate adjustment plate 33 is installed on the dovetail track 32. There are a plurality of intermediate adjustment plates 33, and the widths of the intermediate adjustment plates 33 are all different. An inverted trapezoidal chute is arranged at the bottom. The intermediate adjustment plate 33 is connected to the dovetail track 32 through the chute. The tail track 32 is slidably connected, and a dovetail slide 34 is relatively arranged on the dovetail track 32. The top end of the dovetail slide 34 and the bottom end of the mounting plate 11 clamp the upper adjustment plate 31. The middle adjustment plate 33 is located between the two dovetail slides 34, and also includes a dovetail fixing block 35 relatively arranged on the dovetail track 32. By replacing the middle adjustment plates 33 of different widths and the upper adjustment plates 31 of different thicknesses to ensure that the center of the traveling wave electromagnetic stirrer body 1 is aligned with the center of the ingot, the magnetic field of the traveling wave electromagnetic stirrer body 1 passes through the ingot.

[0036] The mounting seat assembly 3 also includes a plurality of screw holes opened on the dovetail track 32, and the dovetail fixing block 35 is penetrated by a first bolt 36, and the dovetail slide 34 is penetrated by a second bolt 37. There are four second bolts 37 on each dovetail slide 34, and they are located at the four corners of the dovetail slide 34. The upper part of the second bolt 37 penetrates the upper adjustment plate 31 and the mounting plate 11.

[0037] The width of the middle adjustment plate 33 is equal to the width of the ingot, and the rule is that for every 2 mm increase in the ingot width, the width of the middle adjustment plate 33 increases by 2 mm, and the thickness of the upper adjustment plate 31 increases by 1 mm.

[0038] The thickness of the upper adjustment plate 31 is respectively four different sizes of 20 mm, 35 mm, 55 mm and 70 mm, and the width of the middle adjustment plate 33 is respectively four different sizes of 150 mm, 180 mm, 220 mm and 250 mm.

[0039] Replace the middle adjustment plates 33 with different widths and the upper adjustment plates 31 with different thicknesses to make the traveling wave electromagnetic stirrer body 1 adapt to different billet widths. For example, if the billet width or diameter has four specifications of 150mm, 180mm, 220mm and 250mm, the middle adjustment plate 33 has four models with widths of 150mm, 180mm, 220mm and 250mm. When producing billets of different widths, select the middle adjustment plate 33 with the corresponding width W for installation to ensure a closer distance between the traveling wave electromagnetic stirrer body 1 and the billet; select the upper adjustment plates 31 with different thicknesses according to the change in the billet width or diameter. The rule is that for every 2mm increase in the billet width or diameter, the thickness of the upper adjustment plate 31 increases by 1mm. Please refer to Figure 1 , Fig. 9 The basic logic of this rule is: a certain distance must always be maintained between the bottom end of the ingot and the top end of the slab continuous casting machine to avoid direct contact between the ingot and the slab continuous casting machine. When a 150mm wide ingot needs to be replaced with a 250mm wide ingot, in order to avoid direct contact between the bottom end of the ingot and the slab continuous casting machine, it is preferred to keep the bottom end of the ingot unchanged, that is, the distance from the bottom end to the top end of the ingot increases by 100mm compared to the initial distance, and its center position moves up by 50mm. In order to ensure that the center of the traveling wave electromagnetic stirrer body 1 is aligned with the center of the ingot and the magnetic field of the traveling wave electromagnetic stirrer body 1 passes through the ingot, the thickness of the upper adjustment plate 31 increases by 50mm accordingly, so that the center of the traveling wave electromagnetic stirrer body 1 rises by 50mm synchronously.

[0040] like Fig. 9 The figure shows the installation diagram when the specification of the ingot produced is W=150 and the specification of the ingot is changed to W=250mm. The operation process is: when replacing the upper adjustment plate 31, the traveling wave electromagnetic stirrer body 1 is lifted out, the upper adjustment plate 31 with a thickness of 20mm is removed, and the upper adjustment plate 31 with a thickness of 70mm is replaced for installation, and the middle adjustment plate 33 with a width of 150mm is removed and replaced with the middle adjustment plate with a width of 250mm. This simple operation can realize the production of ingots of different specifications, which is efficient and fast, and then the traveling wave electromagnetic stirrer body 1 can be reinstalled.

[0041] For example, if the width or diameter of the ingot has four specifications of 150mm, 180mm, 220mm and 250mm, the corresponding installation thickness of the upper adjustment plate 31 is 20mm, 35mm, 55mm and 70mm respectively. When producing ingots with different widths W, the upper adjustment plates 31 with corresponding thicknesses and the middle adjustment plates 33 with corresponding widths are selected from small to large according to the width of the ingot from small to large for installation. That is, when the width or diameter of the ingot is 150mm, the upper adjustment plate 31 with a thickness of 20mm and the middle adjustment plate 33 with a width of 150mm are selected to ensure that the center of the traveling wave electromagnetic stirrer body 1 is aligned with the center of the ingot, so that the magnetic field of the traveling wave electromagnetic stirrer body 1 passes through the ingot.

[0042] When replacing the middle adjustment plate 33, the first bolt 36 fixing the middle adjustment plate 33 and the dovetail fixing block 35 is loosened, the middle adjustment plate 33 is taken out, and the middle adjustment plate 33 of the corresponding width W is replaced and fixed again.

[0043] A protective plate assembly 2 is installed on each of the two traveling wave electromagnetic stirrer bodies 1 to limit the distance between the traveling wave electromagnetic stirrer body 1 and the ingot. The protective plate assembly 2 includes fixed ear plates 14 fixed on both sides of the traveling wave electromagnetic stirrer body 1. The fixed ear plates 14 are penetrated by mounting ear plates 21. The mounting ear plates 21 are fixed with clamping plates 23. The clamping plates 23 are provided with protective plate water inlet and outlet pipes 22.

[0044] An inductor 15 is arranged in the traveling wave electromagnetic stirrer body 1. The inductor 15 is divided into three parts, namely an iron core 151, a coil 152, and a magnetic pole 153. The inductors 15 on the two traveling wave electromagnetic stirrer bodies 1 are installed opposite to each other and both face the ingot.

[0045] like Figure 7 As shown, when alternating current is supplied, the magnetic field of the oppositely mounted traveling wave electromagnetic stirrer 1 passes through the ingot, forming magnetic field coupling and generating thrust along the casting direction of the ingot.

[0046] The power supply of the traveling wave electromagnetic stirrer body 1 is two-phase alternating current, and it is electrically connected to the electric control system. The phase angle between phase A and phase B is 90 degrees. The switching of phase A and phase B by the electric control system realizes the switching of stirring force.

[0047] like Fig.10 As shown, it is a connection diagram of the relatively arranged traveling wave electromagnetic stirrer body 1, in which A1, B1, and C represent three phase lines respectively, wherein A1 and B1 represent U and V respectively, C is the middle phase, and positive and negative are the winding directions of the coil to the connection point of the traveling wave electromagnetic stirrer body.

[0048] The electromagnetic wire used in the coil 152 is a flat wire. When the length of the coil 152 and the thickness of the iron core 151 are fixed, the optimal flat wire size is implemented. The optimal electromagnetic thrust of the traveling wave electromagnetic stirrer body 1 is achieved through the saturation of the iron core 151, the layer thickness and the number of turns of the coil 152. The optimal size of the flat wire, the saturation of the iron core 151, the layer thickness and the number of turns of the coil 152 are all obtained through simulation calculations. This is existing technology, such as finite element analysis software.

[0049] The working principle is: according to Fig.10As shown in the figure, the traveling wave electromagnetic stirrer body 1 is connected. When it is necessary to produce billets of different widths or diameters, the middle adjustment plates 33 with different widths and the upper adjustment plates 31 with different thicknesses are replaced to make the traveling wave electromagnetic stirrer body 1 adapt to different billet widths. For example, if the billet width or diameter has four specifications of 150mm, 180mm, 220mm and 250mm, the middle adjustment plate 33 has four models with widths of 150mm, 180mm, 220mm and 250mm. When producing billets of different widths, the middle adjustment plate 33 with the corresponding width W is selected for installation to ensure a closer distance between the traveling wave electromagnetic stirrer body 1 and the billet. If the billet width or diameter has four specifications of 150mm, 180mm, 220mm and 250mm, the middle adjustment plate 33 has four models with widths of 150mm, 180mm, 220mm and 250mm. When producing billets of different widths, the middle adjustment plate 33 with the corresponding width W is selected for installation to ensure a closer distance between the traveling wave electromagnetic stirrer body 1 and the billet. The diameters of the upper adjustment plate 31 are 150mm, 180mm, 220mm and 250mm in four specifications, and the corresponding installation thicknesses of the upper adjustment plate 31 are 20mm, 35mm, 55mm and 70mm respectively. When producing billets with different widths W, the upper adjustment plates 31 with corresponding thicknesses and the middle adjustment plates 33 with corresponding widths are selected from small to large for installation according to the billet width from small to large. That is, when the billet width or diameter is 150mm, the upper adjustment plate 31 with a thickness of 20mm and the middle adjustment plate 33 with a width of 150mm are selected to ensure that the center of the traveling wave electromagnetic stirrer body 1 is aligned with the center of the billet, so that the magnetic field of the traveling wave electromagnetic stirrer body 1 passes through the billet;

[0050] When replacing the middle adjustment plate 33, loosen the first bolt 36 fixing the middle adjustment plate 33 and the dovetail fixing block 35, take out the middle adjustment plate 33, replace the middle adjustment plate 33 of the corresponding width W, and re-fix it;

[0051] When replacing the upper adjustment plate 31, the traveling wave electromagnetic stirrer body 1 is lifted out, and then the upper adjustment plate 31 of corresponding thickness is replaced, and the traveling wave electromagnetic stirrer body 1 is reinstalled;

[0052] Fig.11 and Fig.12 The magnetic induction intensity vector simulation diagram and thrust simulation diagram are drawn during the production process of a 180 mm wide ingot after the traveling wave electromagnetic stirrer body 1 of the present invention is installed. Fig.11 The magnetic field intensity (tesla) generated by each area of ​​the traveling wave electromagnetic stirrer body 1 changes. The color gradually changes according to the magnetic field intensity from strong to weak. Fig.12 The electromagnetic thrust generated by each area of ​​the traveling wave electromagnetic stirrer body 1 changes. The color gradually changes according to the electromagnetic thrust from strong to weak. Compared with the traditional equipment for the production of ingots with a width of 180 mm, the stirring efficiency of the present invention is higher under the same power. If the stirring efficiency is the same, the present invention is more energy-saving.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traveling wave electromagnetic stirrer for metallurgy, comprising a traveling wave electromagnetic stirrer body (1) and a body water inlet and outlet pipe (12) and a cable (13) installed on the traveling wave electromagnetic stirrer body (1), wherein the traveling wave electromagnetic stirrer body (1) has two bodies and is arranged opposite to each other. Features: Also includes: Mounting plates (11), wherein the mounting plates (11) have two sets and are respectively fixed to the bottom ends of two traveling wave electromagnetic stirrer bodies (1); The mounting seat assembly (3) is arranged on a slab continuous casting machine, and comprises an upper adjustment plate (31) mounted on the bottom of the mounting plate (11), wherein the upper adjustment plates (31) are provided in plurality and have different thicknesses, and a dovetail track (32) is installed on the slab continuous casting machine, wherein the dovetail track (32) has two members and is arranged opposite to each other, and the top of the dovetail track (32) is in the shape of an inverted trapezoid, and an intermediate adjustment plate (33) is installed on the dovetail track (32), wherein the intermediate adjustment plate (33) has a plurality of members and has different widths, and an inverted trapezoidal slide groove is provided at the bottom, and the intermediate adjustment plate (33) is adjusted by sliding The groove is slidably connected to the dovetail track (32), a dovetail slide seat (34) is arranged on the dovetail track (32) in a relative manner, the top of the dovetail slide seat (34) and the bottom of the mounting plate (11) clamp the upper adjustment plate (31), the middle adjustment plate (33) is located between the two dovetail slide seats (34), and also includes a dovetail fixing block (35) arranged on the dovetail track (32) in a relative manner, by replacing the middle adjustment plates (33) of different widths and the upper adjustment plates (31) of different thicknesses, the center of the traveling wave electromagnetic stirrer body (1) is aligned with the center of the ingot, so that the magnetic field of the traveling wave electromagnetic stirrer body (1) passes through the ingot; The mounting seat assembly (3) further comprises a plurality of screw holes opened on the dovetail rail (32), a first bolt (36) is installed through each of the dovetail fixing blocks (35), a second bolt (37) is installed through each of the dovetail slide seats (34), and each of the second bolts (37) is provided on the dovetail slide seats (34). The second bolts (37) are provided on four corners of the dovetail slide seats (34), and the upper portion of the second bolts (37) passes through the upper adjustment plate (31) and the mounting plate (11).

2. The traveling wave electromagnetic stirrer for metallurgy according to claim 1, Features: The width of the middle adjustment plate (33) is equal to the width of the casting billet, and the rule is that for every 2 mm increase in the width of the casting billet, the width of the middle adjustment plate (33) increases by 2 mm, and the thickness of the upper adjustment plate (31) increases by 1 mm.

3. The traveling wave electromagnetic stirrer for metallurgy according to claim 2, Features: The widths of the middle adjustment plate (33) are respectively four different sizes of 150 mm, 180 mm, 220 mm and 250 mm, and the thicknesses of the upper adjustment plate (31) are respectively four different sizes of 20 mm, 35 mm, 55 mm and 70 mm.

4. The traveling wave electromagnetic stirrer for metallurgy according to claim 1, Features: A protective plate assembly (2) is installed on each of the two traveling wave electromagnetic stirrer bodies (1) for limiting the distance between the traveling wave electromagnetic stirrer body (1) and the ingot, the protective plate assembly (2) comprising fixed ear plates (14) fixed on both sides of the traveling wave electromagnetic stirrer body (1), a clamping plate (23) is provided on one side of the traveling wave electromagnetic stirrer body (1), a mounting ear plate (21) is fixed on the clamping plate (23), a protective plate water inlet and outlet pipe (22) is provided on the clamping plate (23), and the mounting ear plate (21) and the fixed ear plate (14) can be engaged with each other.

5. The traveling wave electromagnetic stirrer for metallurgy according to claim 1, Features: An inductor (15) is arranged in the traveling wave electromagnetic stirrer body (1), and the inductor (15) is divided into three parts, namely an iron core (151), a coil (152), and a magnetic pole (153). The inductors (15) on the two traveling wave electromagnetic stirrer bodies (1) are installed opposite to each other and both face the ingot.

6. The traveling wave electromagnetic stirrer for metallurgy according to claim 5, Features: The power supply of the traveling wave electromagnetic stirrer body (1) is two-phase alternating current, and is electrically connected to the electric control system. The phase angle between the A phase and the B phase is 90 degrees, and the switching of the stirring force is achieved by switching the A phase and the B phase by the electric control system.

7. The traveling wave electromagnetic stirrer for metallurgy according to claim 6, Features: The electromagnetic wire used by the coil (152) is a flat wire.

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