CN201596751U - Compound electromagnetic stirring device - Google Patents
Compound electromagnetic stirring device Download PDFInfo
- Publication number
- CN201596751U CN201596751U CN2009202883992U CN200920288399U CN201596751U CN 201596751 U CN201596751 U CN 201596751U CN 2009202883992 U CN2009202883992 U CN 2009202883992U CN 200920288399 U CN200920288399 U CN 200920288399U CN 201596751 U CN201596751 U CN 201596751U
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- electromagnetic
- crystallizer
- electromagnetic brake
- stirring device
- magnetic
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Abstract
The utility model relates to a compound electromagnetic stirring device which includes a crystallizer, an electromagnetic brake and an electromagnetic stirrer; the outside of the broad surface of the crystallizer is provided with the electromagnetic brake, which can effectively the flushing of hydraulic fluctuation and steel liquid on a solidifying steel shell; and the electromagnetic stirrer is arranged at a secondary cooling zone sector section below the crystallizer, which can quicken heat transfer and refine crystalline grains. The compound electromagnetic stirring device has a reasonable structure design, which not only improves the surface quality of a casting blank and also improves the internal quality of the casting blank.
Description
Technical field
The utility model relates to a kind of smelting iron and steel device, particularly relates to a kind of composite electromagnetic agitating device.
Background technology
In casting process, in order to improve slab quality, the initial flow state of control molten steel and the growth conditions of solidified shell are very important.Existing Electro-Magnetic Metallurgy technology has certain effect to the raising of slab quality, but function ratio is more single, can not satisfy the requirement of high-quality continuous casting billet.
Summary of the invention
The utility model has overcome deficiency of the prior art, and a kind of reasonable in design is provided, and can effectively improve the composite electromagnetic agitating device of slab quality.
In order to address the above problem, the utility model by the following technical solutions:
A kind of composite electromagnetic agitating device comprises crystallizer, electromagnetic brake and magnetic stirrer, wide arranged outside electromagnetic brake of crystallizer, and the fan-shaped section place, two cold-zones of crystallizer below is provided with magnetic stirrer.
The electric current that described electromagnetic brake feeds is a direct current, and voltage must not be higher than safe voltage 380V, and the selection of current strength should guarantee that the magnetic induction intensity of magnetic field center section is not less than 0.2T.
Described magnetic stirrer passes to the low-frequency ac electric current, and frequency is 2～10Hz, and electric current is 0～1000A.
Compared with prior art, the beneficial effects of the utility model are:
1, electromagnetic brake makes molten steel be subjected to the electromagnetic force opposite with flow direction, thereby suppress flowing of molten steel, reduce the impact of molten steel to the casting blank solidification face, the come-up that helps nonmetal inclusion, simultaneously by of the disturbance of control molten steel to liquid level, greatly reduce being involved in of field trash, thereby effectively improved slab surface quality.
2, by in two cold-zones magnetic stirrer being set, it is mobile that molten steel is forced, thereby quicken the process of heat transfer, enlarges the equiax crystal district of strand, reduces component segregation, effectively raises the strand internal soundness.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
A kind of composite electromagnetic agitating device as shown in Figure 1, comprises crystallizer 1, electromagnetic brake 2 and magnetic stirrer 3.At a pair of electromagnetic brake 2 that can produce D.C. magnetic field of 1 wide arranged outside of crystallizer, the electric current that electromagnetic brake 2 feeds is a direct current, voltage must not be higher than safe voltage 380V, the selection of current strength should guarantee that the magnetic induction intensity of magnetic field center section is not less than 0.2T, produce D.C. magnetic field in the electromagnetic braking coil in the electromagnetic brake 2, it is perpendicular that liquid metal and direction and liquid metal outflow direction are passed in this magnetic field, the liquid metal cutting magnetic line movement, thereby in liquid metal, produce induced-current, liquid metal is equivalent to a carrying object, this carrying object is acted on by again in magnetic field, just in carrying object, produce electromagnetic force, this power is opposite with the flow direction of liquid metal, thereby plays the effect of braking.
Fan-shaped section place, two cold-zones below crystallizer 1 is provided with magnetic stirrer 3, and magnetic stirrer 3 passes to the low-frequency ac electric current, and frequency is 2～10Hz, and electric current is 0～1000A.Produce travelling-magnetic-field after feeding the low-frequency alternating electric current in the electromagnetic stirrer coil in the magnetic stirrer 3, this magnetic field is passed liquid metal and produce induced-current in liquid metal, liquid metal is equivalent to a carrying object, this carrying object is acted on by again in magnetic field, just in carrying object, produce electromagnetic force, this force direction is identical with the direction of motion of travelling-magnetic-field, thereby makes liquid metal produce forced convection, thereby reaches the purpose of electromagnetic agitation.
Embodiment one
When producing the 45# steel, on the plate slab crystallizer 1 of 200 * 1450 (mm), placement can produce the electromagnetic brake 2 of D.C. magnetic field, the DC current of input 600A in electromagnetic brake 2, position, two cold-zones in its underpart is provided with the magnetic stirrer 3 that can produce AC magnetic field, input 400A stir current under frequency 5Hz condition, the liquid fluctuating that can suppress molten steel in the crystallizer 1 is produced the high-quality strand of inner equiaxial crystal ratio more than 35% between ± 2mm.
Claims (2)
1. a composite electromagnetic agitating device is characterized in that, comprises crystallizer, electromagnetic brake and magnetic stirrer, wide arranged outside electromagnetic brake of crystallizer, and the fan-shaped section place, two cold-zones of crystallizer below is provided with magnetic stirrer.
2. a kind of composite electromagnetic agitating device according to claim 1, it is characterized in that, the electric current that described electromagnetic brake feeds is a direct current, and voltage must not be higher than safe voltage 380V, and the selection of current strength should guarantee that the magnetic induction intensity of magnetic field center section is not less than 0.2T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202883992U CN201596751U (en) | 2009-12-25 | 2009-12-25 | Compound electromagnetic stirring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202883992U CN201596751U (en) | 2009-12-25 | 2009-12-25 | Compound electromagnetic stirring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201596751U true CN201596751U (en) | 2010-10-06 |
Family
ID=42807799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202883992U Expired - Fee Related CN201596751U (en) | 2009-12-25 | 2009-12-25 | Compound electromagnetic stirring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201596751U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554172A (en) * | 2010-12-15 | 2012-07-11 | 鞍钢股份有限公司 | Dynamic control method for slab continuous casting electromagnetic stirrer |
| CN104226949A (en) * | 2013-06-19 | 2014-12-24 | 鞍钢股份有限公司 | Method for decreasing degree of segregation of C in castings |
| CN109622901A (en) * | 2019-01-07 | 2019-04-16 | 南京钢铁股份有限公司 | A kind of ultra-wide slab central defect control method |
| EP3134220B1 (en) | 2014-04-25 | 2019-09-04 | ThyssenKrupp Steel Europe AG | Method and device for thin-slab strand casting |
| CN111266543A (en) * | 2020-03-13 | 2020-06-12 | 南京钢铁股份有限公司 | Electromagnetic stirring method for high-carbon steel secondary cooling area |
-
2009
- 2009-12-25 CN CN2009202883992U patent/CN201596751U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554172A (en) * | 2010-12-15 | 2012-07-11 | 鞍钢股份有限公司 | Dynamic control method for slab continuous casting electromagnetic stirrer |
| CN104226949A (en) * | 2013-06-19 | 2014-12-24 | 鞍钢股份有限公司 | Method for decreasing degree of segregation of C in castings |
| EP3134220B1 (en) | 2014-04-25 | 2019-09-04 | ThyssenKrupp Steel Europe AG | Method and device for thin-slab strand casting |
| CN109622901A (en) * | 2019-01-07 | 2019-04-16 | 南京钢铁股份有限公司 | A kind of ultra-wide slab central defect control method |
| CN111266543A (en) * | 2020-03-13 | 2020-06-12 | 南京钢铁股份有限公司 | Electromagnetic stirring method for high-carbon steel secondary cooling area |
| CN111266543B (en) * | 2020-03-13 | 2021-10-26 | 南京钢铁股份有限公司 | Electromagnetic stirring method for high-carbon steel secondary cooling area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20151225 |
|
| EXPY | Termination of patent right or utility model |