CN217166463U - Combined electromagnetic stirring casting device - Google Patents
Combined electromagnetic stirring casting device Download PDFInfo
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- CN217166463U CN217166463U CN202220823987.7U CN202220823987U CN217166463U CN 217166463 U CN217166463 U CN 217166463U CN 202220823987 U CN202220823987 U CN 202220823987U CN 217166463 U CN217166463 U CN 217166463U
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Abstract
The utility model provides a modular electromagnetic stirring casting device. The combined electromagnetic stirring casting device comprises a casting blank, an electromagnetic stirrer, a moving platform, a moving support arm and a moving device, wherein the casting blank is arranged in the middle of the moving platform, the moving support arm is distributed on the periphery of the casting blank, and the moving support arm is arranged on the moving platform and can horizontally displace in the forward and reverse directions towards the casting blank; one side of the movable support arm, which is close to the casting blank, is provided with an electromagnetic stirrer; the periphery of the moving platform is arranged on the mover, and the mover is used for driving the moving platform, the electromagnetic stirrer arranged on the moving platform and the moving support arm to move up and down. The utility model discloses can overcome traditional electromagnetic stirring effect not good, especially to generous big round billet, intensity is too big, can arouse "the albedo," and electromagnetic stirring intensity is too little, improves the problem that does not have the effect again to the casting blank quality.
Description
Technical Field
The utility model relates to a metallurgical technical field of casting especially relates to a modular electromagnetic stirring casting device.
Background
At present, the most important link in the field of steel making is to control the solidification process of a casting blank to improve the quality of steel. Electromagnetic stirring has become the key equipment of improvement molten steel liu dong. The electromagnetic stirring acts on the molten steel by generating a rotating magnetic field to push the molten steel to move, so that the superheat degree in the molten steel is dissipated, the homogenization of solute elements is promoted, columnar crystals are converted into isometric crystals, and the internal defects of central segregation, central shrinkage cavity and the like are overcome. For the rotating magnetic field, because the penetration force of the electromagnetic stirring magnetic field of the rotating magnetic field is poor, the formed flow field is high in the outer flow velocity of a casting blank and low in the inner flow velocity, and the central molten steel and the molten steel at the solidification front are slowly exchanged, so that the central segregation and the central shrinkage cavity can be improved to a certain extent, but the effect is limited. Especially for large and large squares, the practical problems are that the electromagnetic stirring intensity is too high, which causes 'white and bright band' (negative segregation), and the electromagnetic stirring intensity is too low, which has no effect on improving the quality of the casting blank.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a modular electromagnetic stirring casting device to it is not good to overcome traditional electromagnetic stirring effect, especially to generous big round billet, intensity is too big, can arouse "white bright band", and electromagnetic stirring intensity is too little, improves the problem that does not have the effect again to the casting blank quality.
The technical scheme of the utility model is that: the combined electromagnetic stirring casting device comprises a casting blank, an electromagnetic stirrer, a moving platform, a moving support arm and a moving device, wherein the casting blank is arranged in the middle of the moving platform, the moving support arm is distributed on the periphery of the casting blank, and the moving support arm is arranged on the moving platform and can horizontally displace in the forward and reverse directions towards the casting blank; one side of the movable support arm, which is close to the casting blank, is provided with an electromagnetic stirrer; the periphery of the moving platform is arranged on the mover, and the mover is used for driving the moving platform, the electromagnetic stirrer arranged on the moving platform and the moving support arm to move up and down.
Preferably, the mounting angle of the electromagnetic stirrer on the movable support arm is adjustable, and the adjustment direction is rotation along a horizontal axis.
Preferably, the movable support arm is vertically provided with at least one mounting position, and 6 through holes are uniformly distributed in the mounting position;
the electromagnetic stirrer is provided with m rotating holes on the circumference, wherein m is 360/60 Xn, and n is a natural number more than or equal to 1; after the electromagnetic stirrer rotates for a certain angle, the through hole is aligned with the rotating hole at the corresponding position.
Preferably, when there are a plurality of moving arms, one electromagnetic stirrer is mounted on each moving arm, and each moving arm can be horizontally displaced separately or simultaneously.
Preferably, when there are a plurality of the mounting positions, a plurality of the electromagnetic stirrers are mounted at the mounting position on the same height, or a plurality of the electromagnetic stirrers are mounted at the mounting positions on different heights.
Preferably, when the installation position is a plurality of, every install position and go up 6 equipartitions respectively and set up the through-hole.
Compared with the prior art, the beneficial effects of the utility model are that: by adjusting the relative position between the electromagnetic stirring and the casting blank in real time, adjusting the forms of different electromagnetic forces, the directions of the electromagnetic forces and the angles of the electromagnetic forces, pushing the metal or alloy melt to move to form a multi-dimensional and multi-directional flow form, and completely eliminating the superheat degree between the center of the casting blank and the solidification front edge, thereby achieving the purpose of solidifying the liquid core at the same time and eliminating the internal quality problems of coarse uneven dendritic crystals, component segregation, loose shrinkage cavities and the like.
Drawings
Fig. 1 is a schematic view of a horizontal installation of the combined electromagnetic stirring casting device provided by the present invention;
FIG. 2 is a schematic diagram of a moving arm structure;
FIG. 3 is a schematic view of a single electromagnetic stirrer;
FIG. 4 is a schematic view of a horizontal rotating flow field formed by four electromagnetic stirrers;
FIG. 5 is a schematic view of a horizontal double-ring flow field formed by combining four electromagnetic stirrers;
FIG. 6 is a schematic view of a horizontal rotating flow field formed by combining two electromagnetic stirrers;
FIG. 7 is a schematic view of a horizontal thrust flow field formed by combining two electromagnetic stirrers;
FIG. 8 is a schematic view of a vertical installation of the combined electromagnetic stirring and casting apparatus;
FIG. 9 is a schematic diagram of four electromagnetic stirrers simultaneously pushed up;
FIG. 10 is a schematic diagram of two up-pushing and two down-pushing of four electromagnetic stirrers;
FIG. 11 is a schematic view of a vertical dual ring flow field under electromagnetic thrust of FIG. 9;
FIG. 12 is a schematic view of a vertical rotating flow field under electromagnetic thrust of FIG. 10;
FIG. 13 is a schematic view of the lower electromagnetic force of the combined electromagnetic stirring device installed obliquely;
FIG. 14 is a schematic view of the electromagnetic force of the combined electromagnetic stirring device installed in layers;
FIG. 15 is a schematic view of a lower horizontal thrust flow field + an upper rotational flow field formed under the electromagnetic thrust of FIG. 14;
FIG. 16 is a top view of the flow field formed in FIG. 14;
fig. 17 is a graph of the relationship between inductor phase and electromagnetic force in an electromagnetic stirrer.
In the drawings: 1. casting blanks; 2. an electromagnetic stirrer; 3. a mobile platform; 4. moving the support arm; 5. a mover; 6. a cooling water pipe; 7. a cable joint; 8. a junction box; 9. an inductor; 10. rotating the hole; 11. an electromagnetic force; 12. a flow field; 13. an upper rotating flow field; 14. a lower horizontal thrust flow field; 15. an upper position; 16. a lower position; 17. and a through hole.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
As shown in fig. 1, the combined electromagnetic stirring casting device provided by this embodiment includes a casting blank 1, an electromagnetic stirrer 2, a moving platform 3, a moving arm 4 and a moving device 5, where the casting blank 1 is disposed in the middle of the moving platform 3, at least one moving arm 4 is disposed on the periphery of the casting blank 1, and the moving arm 4 is mounted on the moving platform 3 and can be horizontally displaced in the forward and reverse directions in the direction of the casting blank 1. And an electromagnetic stirrer 2 is arranged on one side of the movable support arm 4 close to the casting blank 1. The periphery of the moving platform 3 is arranged on the mover 5, and the mover 5 is used for driving the moving platform 3, the electromagnetic stirrer 2 arranged on the moving platform and the moving support arm 4 to move up and down. The horizontal displacement and the up-and-down displacement can be realized through a linear guide rail and a screw rod thread sleeve (or a worm gear, a worm and a gear rack) and the like.
Each electromagnetic stirrer 2 adjusts the relative position between the electromagnetic stirrer 2 and the casting blank 1 in real time through the horizontal displacement of the movable support arm 3, adjusts the forms of different electromagnetic forces, the directions of the electromagnetic forces and the angles of the electromagnetic forces, and completely eliminates the superheat degree between the center of the casting blank and the solidification front edge, thereby achieving the purpose of simultaneously solidifying the solidified liquid core and eliminating the internal quality problems of coarse uneven dendritic crystals, component segregation, loose shrinkage cavities and the like.
The electromagnetic stirring casting device can be composed of one or more electromagnetic stirrers 2, the electromagnetic force direction of each electromagnetic stirrer 2 is controllable, the angle between each electromagnetic stirrer and the flowing direction of the casting blank can be adjusted, and the adjustment range is 0-180 degrees; the plurality of electromagnetic stirrers can be arranged at the same plane height, and also can be arranged at two or more plane heights; the relative position between the electromagnetic stirrer 2 and the cast slab 1 can be adjusted in real time.
The movable supporting arm 4 can drive the electromagnetic stirrer 2 to move back and forth according to the size of the casting blank 1, and the gap between the movable supporting arm and the casting blank 1 can be adjusted. The electromagnetic stirrer 2 and the movable supporting arm 4 can rotate relatively, so that the angle between the electromagnetic stirrer and the flowing direction of the casting blank is adjusted within the range of 0-180 degrees. The movable supporting arm 4 is provided with an upper position and a lower position along the vertical direction of the casting blank 1, or a plurality of positions for installing the electromagnetic stirrers 2.
As shown in fig. 2, the mobile support arm 4 is vertically provided with an upper position 15 and a lower position 16, the upper position 15 and the lower position 16 are respectively composed of 6 through holes 17 which are uniformly distributed, and the distance between adjacent through holes is 60 °. In addition, in addition to the upper position 15 and the lower position 16, only one mounting position or a plurality of mounting positions greater than 2 may be provided in the vertical direction of the moving arm 4 to expand the adjustment range.
As shown in figure 1, the movable supporting arm 4 is arranged on the movable platform 3, and driven by the shifter 5, the movable platform 3 can be pushed to move up and down according to metallurgical requirements, and the movement speed and the position can be adjusted, so that the electromagnetic stirrer 2 and the casting blank 1 are driven to keep relative movement.
The mover 5 is a driving part of the moving platform 3, and the mover 5 is driven by a hydraulic drive or a variable frequency motor, so that the metallurgical requirements can be met better, and the position and the moving speed of the moving platform can be controlled in real time.
As shown in FIG. 3, the electromagnetic stirrer 2 is composed of a junction box 8, a cooling water pipe 6 and an inductor 9, wherein three cable connectors 7 are arranged on the junction box 8 and used for connecting a power supply. The cooling water pipe 6 is connected to external cooling water for cooling the electromagnetic stirrer 2. By controlling the phase angle of the power supply, the direction 11 of the electromagnetic force of the inductor 9 can be controlled. As shown in fig. 17, when U, V, W is supplied with alternating currents of 0 °, 240 ° and 120 °, the electromagnetic force 11 goes to the right, and when U, V, W is supplied with alternating currents of 240 °, 120 ° and 0 °, the electromagnetic force 11 goes to the left. The electromagnetic stirrer 2 comprises a coil and a magnetic conductive iron core, which are purchased parts or mature products, and the internal structure and the specific working principle of the electromagnetic stirrer are not the improvement points of the patent and are not described in detail herein.
As shown in fig. 4, the horizontal rotating flow field is formed when four electromagnetic stirrers 2 are horizontally installed at the same plane height. 4 electromagnetic stirrers 2 are horizontally arranged, the direction of the electromagnetic force 11 is all along the counterclockwise direction, and a formed flow field 12 is a horizontal rotating flow field.
As shown in fig. 5, the horizontal double-loop flow field is formed when four electromagnetic stirrers 2 are horizontally arranged at the same plane height. The four electromagnetic stirrers 2 are horizontally arranged, two electromagnetic stirrers 11 are arranged along the counterclockwise direction, and two electromagnetic stirrers are arranged along the clockwise direction to form a flow field 12 which is a horizontal double-ring flow field.
As shown in FIG. 6, the two electromagnetic stirrers 2 form a thrust flow field when they are horizontally mounted on the same plane. The two electromagnetic stirrers 2 are horizontally arranged, the direction 2 of the electromagnetic force 11 is towards the left, and the formed flow field 12 is a horizontal pushing flow field.
As shown in fig. 7, the two electromagnetic stirrers 2 form a horizontal rotating flow field when they are horizontally installed at the same level. The two electromagnetic stirrers 2 are horizontally arranged, the directions of the electromagnetic forces 11 are all along the counterclockwise direction, and a formed flow field 12 is a horizontal rotating flow field.
As shown in fig. 3, m rotating holes 10 are provided on the circumference of the electromagnetic stirrer 2, where m is 360 ÷ 60 × n, and n is a natural number equal to or greater than 1. When n is 2, the distance between adjacent screw holes is 30 degrees, so that an angle can be adjusted every 30 degrees; when n is 3, the distance between adjacent screw holes is 20 degrees, an angle can be adjusted by every 20 degrees, and the like. After the electromagnetic stirrer 2 is rotated by a certain angle, the through hole 17 is aligned with the corresponding position of the rotation hole 10 (vertical installation as shown in fig. 8, and inclined installation as shown in fig. 13).
Fig. 8 is a schematic diagram of vertical installation of four combined electromagnetic stirring casting devices, and the principle of changing the direction of electromagnetic force after vertical installation is as follows:
fig. 9 is a schematic diagram of four electromagnetic stirrers 2 pushing up simultaneously, and under the installation condition of fig. 7, the four electromagnetic stirrers 2 push upwards totally, and the formed flow field 12 is a vertical double-ring flow field shown in fig. 11.
Fig. 10 is a schematic diagram of two upward thrusts and two downward thrusts of four electromagnetic stirrers, and in the installation condition of fig. 8, the thrusts 2 of the two electromagnetic stirrers are upward, the thrusts 2 of the two electromagnetic stirrers are downward, and the formed flow field 12 is the vertical rotation flow field shown in fig. 12.
Fig. 13 is a schematic diagram of the electromagnetic force generated by the inclined installation of the combined electromagnetic stirring casting device, the electromagnetic stirring direction can be rotated by adjusting the position of the rotating hole 10, the adjustment range is 0-180 °, and a spiral flow field is generated due to the fact that the electromagnetic force 11 and the casting blank 1 have a certain angle.
Fig. 14 is a schematic diagram of the electromagnetic force of the combined electromagnetic stirrers installed in layers, wherein two electromagnetic stirrers are installed on the upper side, and two electromagnetic stirrers are installed on the lower side. The thrust force 11 direction of the two upward electromagnetic stirrers 2 is along the counterclockwise direction, and an upper rotating flow field 13 as shown in fig. 15 and 16 is generated. The two downward electromagnetic stirrers 2 are all oriented to the left in the thrust direction 11, and generate a downward horizontal thrust field 14 as shown in fig. 15 and 16. The lower horizontal thrust flow field 14 can enhance the exchange between the central molten steel and the molten steel at the solidification front, and the upper rotary flow field 13 can further move along the circumferential direction, so that the dissipation of superheat degree is enhanced.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (6)
1. The combined electromagnetic stirring casting device is characterized by comprising a casting blank (1), an electromagnetic stirrer (2), a moving platform (3), a moving support arm (4) and a moving device (5), wherein the casting blank (1) is arranged in the middle of the moving platform (3), at least one moving support arm (4) is arranged on the periphery of the casting blank (1), and the moving support arm (4) is arranged on the moving platform (3) and can be horizontally displaced forward and backward in the direction of the casting blank (1); one side of the movable support arm (4) close to the casting blank (1) is provided with an electromagnetic stirrer (2); the periphery of the moving platform (3) is arranged on the mover (5), and the mover (5) is used for driving the moving platform (3) and the electromagnetic stirrer (2) and the moving support arm (4) which are arranged on the moving platform to move up and down.
2. The combined electromagnetic stirring casting apparatus as set forth in claim 1 wherein the electromagnetic stirrer (2) is mounted at an adjustable angle on the moving arm (4) in a direction rotating along a horizontal axis.
3. The combined electromagnetic stirring casting device of claim 1, wherein the movable support arm (4) is vertically provided with at least one mounting position, and 6 through holes (17) are uniformly distributed on the mounting position;
the electromagnetic stirrer (2) is provided with m rotating holes (10) on the circumference, wherein m is 360 ÷ 60 Xn, and n is a natural number which is more than or equal to 1; after the electromagnetic stirrer (2) rotates for a certain angle, the through hole (17) is aligned with the rotating hole (10) at the corresponding position.
4. The combined electromagnetic stirring casting apparatus as claimed in claim 3, wherein when the moving arm (4) is plural, one electromagnetic stirrer (2) is mounted on each moving arm (4), and each moving arm (4) can be horizontally displaced individually or simultaneously.
5. The combined electromagnetic stirring casting apparatus according to claim 4, wherein when the installation position is plural, plural electromagnetic stirrers (2) are installed at the installation position at the same height, or plural electromagnetic stirrers (2) are installed at the installation positions at different heights.
6. The combined electromagnetic stirring casting device according to claim 3, wherein when the mounting positions are plural, each mounting position is provided with 6 through holes (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220823987.7U CN217166463U (en) | 2022-04-11 | 2022-04-11 | Combined electromagnetic stirring casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220823987.7U CN217166463U (en) | 2022-04-11 | 2022-04-11 | Combined electromagnetic stirring casting device |
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| Publication Number | Publication Date |
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| CN217166463U true CN217166463U (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220823987.7U Active CN217166463U (en) | 2022-04-11 | 2022-04-11 | Combined electromagnetic stirring casting device |
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| CN (1) | CN217166463U (en) |
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- 2022-04-11 CN CN202220823987.7U patent/CN217166463U/en active Active
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