CN101549393A - Electromagnetic stirring and flow control device technology for multi-mode bar plate continuous casting crystallizer - Google Patents
Electromagnetic stirring and flow control device technology for multi-mode bar plate continuous casting crystallizer Download PDFInfo
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- CN101549393A CN101549393A CNA2009103024863A CN200910302486A CN101549393A CN 101549393 A CN101549393 A CN 101549393A CN A2009103024863 A CNA2009103024863 A CN A2009103024863A CN 200910302486 A CN200910302486 A CN 200910302486A CN 101549393 A CN101549393 A CN 101549393A
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Abstract
The invention relates to an electromagnetic stirring and flow control device technology for multi-mode bar plate continuous casting crystallizer, which includes respectively setting the inner arc induction apparatus and outer arc induction apparatus which are from electromagnetic stirring induction apparatus at two sides of the crystallizer copper plate, and molten steel passing through the induction apparatus and crystallizer copper plate. The inner arc induction apparatus and outer arc outer arc induction apparatus respectively set at least four magnetic field zone, and the magnetic field size and field direction of each magnetic field zone can be adjusted independently, and by changing the setup of magnetic field, single rotation stirring schema, electro-magnetism slowdown schema, electro-magnetism speedup schema, two zones rotation stirring schema and four zones rotation stirring schema can be combined into. The invention tentatively manufactures one set of multi-mode bar plate continuous casting crystallizer electromagnetic stirring and flow control device by employing slotless and magnetic shading technology, which well accounts for the difficulty of installation, greatly diminishes the alteration cost caused by increasing electromagnetic stirring, and also greatly increases the metallurgy effect of bar plate crystallizer electromagnetic stirring.
Description
Technical field
The present invention relates to magnetic stirrer, refer in particular to a kind of multi-mode continuous casting crystallizer for plate billet electromagnetic agitation and flow-controlled device technology.
Background technology
Existing following 2 kinds of continuous casting crystallizer for plate billet electromagnetic induction technology: the rotating excitation field electromagnetic agitating technology of a. single-mode, b. have the three-mode crystallizer electromagnetism control stream technology of electromagnetism acceleration, electromagnetic deceleration and single rotating excitation field electromagnetic agitation function.First kind of technology is representative with Japanese Nippon Steel, is mainly used in the stirring to the high steel grade of casting billet surface and subcutaneous quality requirement.2 electromagnetic agitation inductors are installed in outer arc side in the plate slab crystallizer, respectively produce one during work size is identical but moving magnetic field that direction is opposite acts on the molten steel of fusion in the crystallizer, make the molten steel of solidification front produce the purpose that motion reaches the cleaning initial solidification shell, thereby improve the surface and the subcutaneous quality of strand.Its deficiency is that electromagnetism rotation is stirred the molten steel that causes and flowed and can not be deep into the strand center, thereby it is little that the strand internal soundness is improved influence.Simultaneously flow field of molten steel is not controlled function, can't regulate the flowing velocity and the direction of molten steel in the crystallizer, it is limited to improve slab quality.Second kind of technology is representative with Japanese NKK and French Rotelec, except the agitating function with first kind of technology, also have electromagnetism to quicken and deceleration, thereby the steel grade that adapts to is wider.Electromagnetism quickens and the deceleration flowing velocity and the direction of molten steel in the crystallization control device well, gently liquid level, alleviate the molten steel plume and pour the degree of depth.Bring field trash and bubble into strand inside thereby reduce plume, alleviate center segregation, improve the strand internal soundness.Its deficiency remains electromagnetism rotation and stirs the molten steel that causes and flow and can not be deep into the strand center, can not as circumference billet crystallizer electromagnetic agitation, produce and go deep into rotatablely moving of molten steel center, thereby can not initiatively make field trash and bubble coalescence and the come-up that enters molten steel inside, do not eliminate simultaneously the function of superheat of liquid steel yet, improve still limited the strand internal soundness.
Summary of the invention
The objective of the invention is to be improved, innovate at shortcoming that exists in the background technology and problem, a kind of existing function that both contained is provided, has the multi-mode continuous casting crystallizer for plate billet electromagnetic agitation and the flow-controlled device that as circumference billet crystallizer electromagnetic agitation, can produce the rotation stirring of going deep into the molten steel center simultaneously again.Make the plate slab crystallizer electromagnetic agitation accomplish to have the quick elimination degree of superheat, make field trash and bubble coalescence and come-up and suppress the function of column crystals growth as circumference billet crystallizer electromagnetic agitation, reach increase equiax crystal, reduce inner inclusion and bubble, alleviate center segregation, eliminate middle crack, improve the continuous casting pulling rate, improve the continuous casting material-forming rate, the multi-mode continuous casting crystallizer for plate billet electromagnetic agitation and the flow-controlled device technology of raising strand qualification rate.
Technical scheme of the present invention is a kind of electromagnetic agitation and flow-controlled device technology that comprises following structure of structure:
The electromagnetic agitation inductor is divided into inner arc inductor and outer arc inductor, and inner arc inductor and outer arc inductor are separately positioned on the copper plate of crystallizer both sides, and molten steel passes through in the middle of inductor and copper plate of crystallizer, wherein:
Inner arc inductor and outer arc inductor are set at least four field regions respectively, but the magnetic field of each field regions size and magnetic direction be independent regulation all, and is provided with and can be combined into by changing magnetic field: single rotation stir mode, electromagnetic deceleration pattern, electromagnetism aero mode, two districts rotation stir mode He Si district's rotation stir mode.
The present invention has following advantage and beneficial effect:
The present invention introduces no teeth groove and the magnetic screen technology has been manufactured experimently a cover multi-mode continuous casting crystallizer for plate billet electromagnetic agitation and a flow-controlled device.Compare with external existing plate slab crystallizer electromagnetic agitation, increased vital 4 districts and 2 district's stir modes, agitating function strengthens greatly.Appearance and size greatly reduces to external 1/2-2/3 simultaneously, can be installed in easily like this in the water tank of plate slab crystallizer, solves well a difficult problem is installed, and significantly reducing increases the caused improvement cost of electromagnetic agitation.The introducing of subregion stir mode and use make the plate slab crystallizer electromagnetic agitation not only keep original single stirring and acceleration and deceleration function simultaneously but also realized being similar to the such rotation agitating function of circumference base.Increased the metallurgical effect of plate slab crystallizer electromagnetic agitation greatly! Become the developing direction of plate slab crystallizer electromagnetic agitation.
Description of drawings
Fig. 1 is the single rotation stir mode of a present invention schematic diagram
Fig. 2 is Fig. 1 side view
Fig. 3 is an electromagnetic deceleration pattern diagram of the present invention
Fig. 4 is an electromagnetism aero mode schematic diagram of the present invention
Fig. 5 is the present invention two districts rotation stir mode schematic diagram
Fig. 6 is the present invention four districts rotation stir mode schematic diagram
The specific embodiment
By Fig. 1 to 6 as can be known, the present invention includes:
The electromagnetic agitation inductor is divided into inner arc inductor 1 and outer arc inductor 2, and inner arc inductor 1 and outer arc inductor 2 are separately positioned on copper plate of crystallizer 3 both sides, and molten steel 5 passes through in the middle of inductor and copper plate of crystallizer 3, wherein:
Single rotation stir mode of the present invention is, inner arc inductor 1 and outer arc inductor 2 are provided with respectively, and the magnetic field that big or small equidirectional is opposite acts on the molten steel of fusion in the crystallizer.
Electromagnetic deceleration pattern of the present invention is, a plurality of field regions in inner arc inductor 1 and the outer arc inductor 2 are arranged to the corresponding sensing of magnetic direction center respectively, and molten steel slows down and flows in the crystallization control device.
Electromagnetism aero mode of the present invention is, a plurality of field regions in inner arc inductor 1 and the outer arc inductor 2 is arranged to magnetic direction respectively deviates from the center, and molten steel quickens to flow in the crystallization control device.
Rotation stir mode in two districts of the present invention is, is that a unit is arranged to two unit magnetic directions and is deviated from the center with inner arc inductor 1 with two field regions, and be a unit with two field regions with outer arc inductor 2, the magnetic direction of being arranged to two unit points to the center, makes two stirring area that direction is opposite of molten steel formation in the crystallizer.
Rotation stir mode in four districts of the present invention is, is that four unit are arranged in a unit with inner arc inductor 1 with single field regions, every adjacent cells magnetic direction is opposite, and be a unit also with single field regions with outer arc inductor 2, and be arranged to four unit, every adjacent cells magnetic direction is identical, makes the interior molten steel of crystallizer form four opposite stirring area of per two directions.Rotations stir mode in four districts is divided into the sub-district that four (or a plurality of) be similar to rectangular bloom with the wide plate base and is rotated stirring, and the rotation mixing direction in adjacent two districts is opposite, as gears engaged.The purpose that is divided into four (or a plurality of) district is exactly that the path of will rotation stirring reduces, and makes it to reach the condition when being similar to the rotation of circumference base and stirring, thereby produces the rotation stirring movement of going deep into the molten steel center.
Embodiment of the present invention only is the description that preferred implementation of the present invention is carried out; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design philosophy of the present invention; engineers and technicians make technical scheme of the present invention in this area various modification and improvement; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection all is documented in claims.
Claims (6)
1. multi-mode continuous casting crystallizer for plate billet electromagnetic agitation and flow-controlled device technology is characterized in that comprising:
The electromagnetic agitation inductor is divided into inner arc inductor (1) and outer arc inductor (2), and inner arc inductor (1) and outer arc inductor (2) are separately positioned on copper plate of crystallizer (3) both sides, and molten steel (5) passes through in the middle of inductor and copper plate of crystallizer (3), wherein:
Inner arc inductor (1) and outer arc inductor (2) are set at least four field regions respectively, but the magnetic field of each field regions size and magnetic direction be independent regulation all, and is provided with and can be combined into by changing magnetic field: single rotation stir mode, electromagnetic deceleration pattern, electromagnetism aero mode, two districts rotation stir mode He Si district's rotation stir mode.
2. multi-mode continuous casting crystallizer for plate billet electromagnetic agitation according to claim 1 and flow-controlled device technology, it is characterized in that described single rotation stir mode is, inner arc inductor (1) and outer arc inductor (2) are provided with respectively, and the magnetic field that big or small equidirectional is opposite acts on the molten steel of fusion in the crystallizer.
3. multi-mode continuous casting crystallizer for plate billet electromagnetic agitation according to claim 1 and flow-controlled device technology, it is characterized in that described electromagnetic deceleration pattern is, a plurality of field regions in inner arc inductor (1) and the outer arc inductor (2) are arranged to the corresponding sensing of magnetic direction center respectively, and molten steel slows down mobile in the crystallization control device.
4. multi-mode continuous casting crystallizer for plate billet electromagnetic agitation according to claim 1 and flow-controlled device technology, it is characterized in that described electromagnetism aero mode is, a plurality of field regions in inner arc inductor (1) and the outer arc inductor (2) are arranged to magnetic direction respectively deviate from the center, molten steel quickens to flow in the crystallization control device.
5. multi-mode continuous casting crystallizer for plate billet electromagnetic agitation according to claim 1 and flow-controlled device technology, it is characterized in that described two districts rotation stir mode is, is that a unit is arranged to two unit magnetic directions and is deviated from the center with inner arc inductor (1) with two field regions, and be a unit with two field regions with outer arc inductor (2), the magnetic direction of being arranged to two unit points to the center, makes two stirring area that direction is opposite of molten steel formation in the crystallizer.
6. multi-mode continuous casting crystallizer for plate billet electromagnetic agitation according to claim 1 and flow-controlled device technology, it is characterized in that described four districts rotation stir mode is, is that four unit are arranged in a unit with inner arc inductor (1) with single field regions, every adjacent cells magnetic direction is opposite, and be a unit also with single field regions with outer arc inductor (2), and be arranged to four unit, every adjacent cells magnetic direction is identical, makes the interior molten steel of crystallizer form four opposite stirring area of per two directions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009103024863A CN101549393A (en) | 2009-05-21 | 2009-05-21 | Electromagnetic stirring and flow control device technology for multi-mode bar plate continuous casting crystallizer |
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| CNA2009103024863A CN101549393A (en) | 2009-05-21 | 2009-05-21 | Electromagnetic stirring and flow control device technology for multi-mode bar plate continuous casting crystallizer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458199A (en) * | 2016-01-04 | 2016-04-06 | 湖南中科电气股份有限公司 | Square billet split multi-mode electromagnetic stirrer and control method thereof |
| CN105935751A (en) * | 2016-07-05 | 2016-09-14 | 湖南中科电气股份有限公司 | Multifunctional multi-mode electromagnetic flow control device of slab continuous casting crystallizer |
| CN106475537A (en) * | 2015-08-25 | 2017-03-08 | 宝山钢铁股份有限公司 | The adjustable electromagnetic mixing apparatus of stirring region and method |
| CN111299532A (en) * | 2020-03-13 | 2020-06-19 | 南京钢铁股份有限公司 | Continuous casting two-cooling-zone sectional roller type pulse current electromagnetic stirring device and method |
-
2009
- 2009-05-21 CN CNA2009103024863A patent/CN101549393A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475537A (en) * | 2015-08-25 | 2017-03-08 | 宝山钢铁股份有限公司 | The adjustable electromagnetic mixing apparatus of stirring region and method |
| CN105458199A (en) * | 2016-01-04 | 2016-04-06 | 湖南中科电气股份有限公司 | Square billet split multi-mode electromagnetic stirrer and control method thereof |
| CN105458199B (en) * | 2016-01-04 | 2016-12-14 | 湖南中科电气股份有限公司 | Square billet split multi-mode EMS device and control method thereof |
| CN105935751A (en) * | 2016-07-05 | 2016-09-14 | 湖南中科电气股份有限公司 | Multifunctional multi-mode electromagnetic flow control device of slab continuous casting crystallizer |
| CN111299532A (en) * | 2020-03-13 | 2020-06-19 | 南京钢铁股份有限公司 | Continuous casting two-cooling-zone sectional roller type pulse current electromagnetic stirring device and method |
| CN111299532B (en) * | 2020-03-13 | 2022-04-19 | 南京钢铁股份有限公司 | Continuous casting two-cooling-zone sectional roller type pulse current electromagnetic stirring device and method |
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Open date: 20091007 |