CN109128122A - A kind of channel-type induction heating ladle device and heating means - Google Patents
A kind of channel-type induction heating ladle device and heating means Download PDFInfo
- Publication number
- CN109128122A CN109128122A CN201811230027.4A CN201811230027A CN109128122A CN 109128122 A CN109128122 A CN 109128122A CN 201811230027 A CN201811230027 A CN 201811230027A CN 109128122 A CN109128122 A CN 109128122A
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- Prior art keywords
- ladle
- channel
- coil
- iron core
- induction heating
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention belongs to technical field of ferrous metallurgy, a kind of channel-type induction heating ladle device and heating means are disclosed, for heating molten steel in ladle in steel production, reducing temperature drop.Corresponding device includes ladle, steel ladle cover, iron core, coil, water cooling or air cooling device；Channel is provided among ladle, channel can also pass perpendicularly through ladle center horizontal through ladle side wall；Iron core passes through the side that channel is surrounded on ladle；Coil is wound in the iron core on the outside of ladle, and axis is vertical with the holding of the axis of iron core, and coil is connected with water cooling or air cooling device.Heating means are as follows: (1) transport ladle to refining or casting position；(2) water cooling or air cooling device are opened to cool down to coil, prevents coil when subsequent energization from overheating；(3) it is passed through alternating current in coil, makes to generate alternating flux in iron core, wherein size of current is 1~10000A, and frequency is 1~10000Hz；(4) after to be refined or casting complete, stop being powered, water cooling or air cooling device are closed, into subsequent processing.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, and in particular to a kind of channel-type induction heating ladle device and heating side
Method.
Background technique
As the main tool of STEELMAKING PRODUCTION, ladle is often used for holding molten steel and is refined and be poured.Ladle heat insulation
The quality of performance directly affects Tapping Temperature of Bof, external refining and casting process, and finally causes to the quality of steel products
It influences.Therefore, how molten steel in ladle is kept the temperature, reduces temperature drop, causing the great attention of metallargist.
Currently, common ladle heating means mainly include electric arc heated method, Chemical heating method, fuel combustion heating, electricity
Hinder heating etc..
Although electric arc heated method, using more, this method is too high to the performance requirement of electrode, electric arc is away from ladle liner
Distance it is too close, ladle lining life is short, molten steel is easy air-breathing etc. when electric arc heated under normal pressure, be all that electric arc heated method is insoluble
Problem.Chemical heating method is blown into oxygen into ladle using oxygen rifle, and it is anti-that oxidation occurs with the exothermic mixtures such as aluminium, silicon being added in molten steel
It answers, and then generates chemical heat, but the addition of exothermic mixture often causes to generate more field trash in molten steel, influences molten steel matter
Amount.It is known as fuel combustion heating using fossil-fuel-fired fever as the method for heat source heating ladle.However, the oxygen of burning
Reducing atmosphere and vacuum refining environment when a large amount of flue gases that the property changed flame, burning generate are unfavorable for external refining, and
Flame can make its inner lining refractory be in the alternately and repeatedly effect of oxidation, reduction when preheating ladle, so that the liner service life be made to drop
It is low.Using graphite resistor rod as heater element, electric current is passed to, the method by the resistance heat heating molten steel of graphite rod is known as resistance
Heating.But electrical resistance heating relies on radiant heat transfer, heating efficiency is lower, and temperature raising with practical value is obtained by this method
Rate is extremely difficult, and therefore, resistance heating method is not developed and promotes substantially.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of channel-type induction heating ladle device and heating means.This
The technical solution of invention is as follows:
A kind of channel-type induction heating ladle device, including ladle, iron core, coil, water cooling or air cooling device；The ladle
Centre radially opens up channel；Iron core is closed hoop structure, sequentially passes through channel and hub of a spool, coil axis and ladle axis
Line is vertical, and coil is connected with water cooling or air cooling device.
Another scheme, the channel is axial among ladle to be opened up, and coil axis is parallel with ladle axis.
The ladle further includes that steel ladle cover is stamped on top, to completely cut off coil and molten steel, protects coil, while can be to ladle
Molten steel is kept the temperature.
On the steel shell that above-mentioned passway connects, it is equipped with one week joint-cutting along dipping pipe shell radial circumference, reduces in steel shell
Eddy-current loss.
The channel is cylinder.
The material of the iron core is the soft magnetic materials of high permeability, and the gap between iron core and channel is filled out by refractory material
Fill fixation；Iron core size is formulated according to the size and coil power in channel, the preferred silicon steel sheet of material.
The coil is placed in the outside of ladle, is connected with water cooling or air cooling device；The heating power of coil be 1~
10000KW, material are acid bronze alloy, including fine copper, red copper.
A kind of channel-type induction heating ladle heating means are to be carried out using above-mentioned apparatus according to following processing step:
(1) ladle is in place: ladle is transported to refining or casting position；
(2) cooling: to open water cooling or air cooling device and cool down to coil, prevent coil when subsequent energization from overheating；
(3) be powered: be passed through alternating current in coil, make to generate alternating flux in iron core, wherein size of current be 1~
10000A, frequency are 1~10000Hz；
(4) subsequent processing: after to be refined or casting complete, stop being powered, water cooling or air cooling device are closed, into next work
Sequence.
Beneficial effects of the present invention:
(1) according to the working principle of transformer, coil is passed through alternating current and generates alternating flux in the iron core of closure, into
And induced electromotive force is generated in ladle molten steel, and molten steel conduction generates induced current, and Joule heat is generated in molten steel heats molten steel,
Tapping Temperature of Bof can be reduced, omit the link heated before external refining to molten steel, temperature drop loss is reduced, shorten life
The period is produced, makes to be poured more stable；
(2) deficiency of the heating means such as fuel combustion is overcome, can be used cooperatively with ladle refining methods such as VD, VOD, is protected
The reducing atmosphere in refining ladle is demonstrate,proved, external refining efficiency is improved；
(3) heating process can be used cooperatively with ladle eccentric bottom blown argon gas agitating, and heat can be transmitted to steel with molten steel flow
Molten steel everywhere is wrapped, making heating, more uniformly, efficiently heating efficiency is up to 90%；
(4) when ladle surrounding steel shell is placed in alternating magnetic field, induced current is also easy to produce in steel shell, and electric current closes in conductor
It closes, and has joint-cutting in ladle surrounding steel shell involved in the present invention, the eddy-current loss in steel shell can be effectively reduced；
(5) it is not required to introduce the exothermic mixtures such as aluminium, silicon into ladle molten steel, avoid because being pressed from both sides caused by adding aluminium plus silicon heating
The generation of sundries does not introduce other substances into molten steel, improves quality of molten steel；
(6) it is not required to that electric arc, electrode, oxygen rifle dispatch control system are installed at the top of ladle, designs relatively simple, easily operated control
System.
Detailed description of the invention
Fig. 1 be channel-type induction heating ladle device of the invention agent structure schematic diagram, wherein channel horizontal through
Ladle side wall；
Fig. 2 is the main view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is the main view of ladle in Fig. 1 shown device；
Fig. 5 is the top view of ladle in Fig. 1 shown device；
Fig. 6 is the agent structure schematic diagram of channel-type induction heating ladle device of the invention, and wherein channel passes perpendicularly through
Ladle center；
Fig. 7 is the main view of Fig. 6；
Fig. 8 is the top view of Fig. 6；
Fig. 9 is the main view of ladle in Fig. 6 shown device；
Figure 10 is the top view of ladle in Fig. 6 shown device；
Figure 11 is the agent structure schematic diagram of coil and iron core；
Figure 12 is the flow diagram of channel-type induction heating ladle heating means of the invention；
Figure 13 is the main Eddy Distribution schematic diagram that electromagnetic field is simulated, and wherein channel is horizontal through ladle side wall；
Figure 14 is the main Eddy Distribution schematic diagram that electromagnetic field is simulated, and wherein channel passes perpendicularly through ladle center.
In figure, 1 is ladle, and 2 be iron core, and 3 be coil, and 4 be water cooling or air cooling device, and 5 be refractory material layer, and 6 be steel shell,
7 be channel, and 8 be joint-cutting, and 9 be steel ladle cover.
Specific embodiment
An embodiment of the present invention is described further in the following with reference to the drawings and specific embodiments.
Embodiment
A kind of channel-type induction heating ladle device and heating means, as shown in Fig. 1~Figure 11, including ladle 1, iron core 2,
Coil 3, water cooling or air cooling device 4, refractory material layer 5, steel shell 6, channel 7, joint-cutting 8, steel ladle cover 9.Wherein, it is passed through in ladle 1
The channel 7 worn；Iron core 2 passes through the side that channel 7 is surrounded on ladle 1；Coil 3 is wrapped on iron core 2, positioned at the outside of ladle 1；
Steel ladle cover 9 is covered in the top of ladle 1.
The material of the iron core 2 is silicon steel sheet, and the gap between iron core 2 and channel 7 is filled by refractory material.
The material of the coil 3 is red copper, and the heating power of coil 3 is 500KW.
The axis of the coil 3 is vertical with the holding of the axis of iron core 2.
The water cooling or air cooling device 4 be in order to reduce be powered after coil 3 temperature, protect coil 3, prevent heating molten steel
Process coil 3 overheats.
The outside of the refractory material layer 5 is steel shell 6.
Relative to ladle 1 there are two types of location arrangements mode, channel 7 horizontal can run through 1 side wall of ladle in the channel 7, can also
1 center of ladle is passed perpendicularly through, specifically depending on operating condition.
The joint-cutting 8 is located in steel shell 6, can effectively reduce the eddy-current loss in steel shell 6.Run through ladle 1 when channel 7 is horizontal
Side wall, one week of 8 horizontal circle steel shell 6 of joint-cutting；When channel 7 passes perpendicularly through 1 center of ladle, joint-cutting 8 shares 4, from ladle 1
Edge to 1 bottom of ladle, and it is uniformly distributed in the surrounding of steel shell 6.
High-temperature molten steel in ladle can heat iron core 2, coil 3 by modes such as heat radiations, and the steel ladle cover 9 covers
The top for being placed on ladle 1 is the heating dress such as protection iron core 2, coil 3 in order to which iron core 2, coil 3 to be isolated with the molten steel in ladle 1
It sets, while the molten steel in ladle 1 can be kept the temperature.
A kind of channel-type induction heating ladle heating means are to be carried out using above-mentioned apparatus according to following processing step,
Process signal is as shown in figure 12:
(1) ladle is in place: ladle is transported to refining or casting position；
(2) cooling: to open water cooling or air cooling device and cool down to coil, prevent coil when subsequent energization from overheating；
(3) be powered: be passed through alternating current in coil, make to generate alternating flux in iron core, wherein size of current be 1~
10000A；
(4) subsequent processing: after to be refined or casting complete, stop being powered, water cooling or air cooling device are closed, into next work
Sequence.
In the present embodiment the principle of channel-type induction heating ladle device and heating means can specific explanations it is as follows:
After ladle 1 reaches refining or casting position, coil 3 is passed through alternating current.It can passed through according to the working principle of transformer
It wears in iron core-closed the 2 of ladle 1 and generates alternating flux, the molten steel in ladle 1 constitutes in refining or casting because flowing at this time
Secondary coil.Therefore, molten steel circuit can produce induced electromotive force under the action of electromagnetic field, and molten steel conduction generates induced current.
Molten steel can be heated since molten steel generates Joule heat there are resistance.Heat can be transmitted to ladle molten steel everywhere with molten steel flow, make
Heating is more uniformly, efficiently.
It is led according to Faraday's electromagnetic induction law when blocky conductor is placed in alternating magnetic field or moves in fixed magnetic field
Induced current is generated in vivo, this electric current is closed in conductor, referred to as eddy current effect.In the invention device, it is located at the steel nearby of coil 3
The outermost of packet 1 has a steel shell 6, under the action of the alternating magnetic field that iron core 2 and coil 3 generate, can produce induction inside steel shell 6
Electric current, i.e. eddy current effect.Figure 12 is the main Eddy Distribution schematic diagram in the steel shell 6 simulated according to electromagnetic field, in figure
Recirculating zone can indicate faradic flow direction.As seen from the figure, when channel 7 is horizontal runs through 1 side wall of ladle, the steel of ladle 1
If seemless 8 in shell 6, can generate biggish induced current, and then lead to energy loss i.e. eddy-current loss.Meanwhile as seen from the figure,
The center of recirculating zone and horizontal channel 7 are near same level, therefore, the middle part setting one of the steel shell 6 in ladle 1
Joint-cutting 8 can effectively obstruct faradic flowing, reduce eddy-current loss.Similarly, when channel 7 passes perpendicularly through 1 center of ladle,
Main Eddy Distribution schematic diagram in the steel shell 6 simulated according to electromagnetic field is as shown in figure 13, with channel 7 horizontal through ladle
It is different when 1 side wall, it needs to be arranged at this time from ladle 1 along four joint-cuttings 8 to 1 bottom of ladle, is uniformly distributed in the four of ladle 1
Week, to reduce eddy-current loss.
It is of the present invention that the examples are only preferred embodiments of the present invention is described, not to present inventive concept and
Range is defined.In addition to it can produce heating effect to ladle molten steel described in embodiment, also help accelerate alloying process,
Conducive to inclusion removal etc..Under the premise of not departing from design philosophy of the present invention, engineers and technicians are to the present invention in this field
The all variations and modifications made of technical solution, protection scope of the present invention should all be fallen into.
Claims (9)
1. a kind of channel-type induction heating ladle device, which is characterized in that including ladle, iron core, coil, water cooling or air-cooled dress
It sets；Channel is radially opened up among the ladle；Iron core is closed hoop structure, sequentially passes through channel and hub of a spool, coil
Axis is vertical with ladle axis, and coil is connected with water cooling or air cooling device.
2. a kind of channel-type induction heating ladle device described in claim 1, which is characterized in that the channel is among ladle
It axially opens up, coil axis is parallel with ladle axis.
3. channel-type induction heating ladle device according to claim 1 or claim 2, which is characterized in that the steel shell that passway connects
On, one week joint-cutting is equipped with along dipping pipe shell radial circumference.
4. channel-type induction heating ladle according to claim 1 or 2, which is characterized in that the material of the iron core is height
The soft magnetic materials of magnetic permeability, and the gap between iron core and channel is filled by refractory material and is fixed.
5. channel-type induction heating ladle according to claim 3, which is characterized in that the material of the iron core is high magnetic conduction
The soft magnetic materials of rate, and the gap between iron core and channel is filled by refractory material and is fixed.
6. channel-type induction heating ladle device described according to claim 1 or 2 or 5, which is characterized in that the ladle also wraps
It includes top and is stamped steel ladle cover.
7. channel-type induction heating ladle device according to claim 3, which is characterized in that the ladle further includes top
It is stamped steel ladle cover.
8. channel-type induction heating ladle device according to claim 4, which is characterized in that the ladle further includes top
It is stamped steel ladle cover.
9. any channel-type induction heating ladle heating means of claim 1-8, which is characterized in that according to following technique
Step carries out:
(1) ladle is in place: ladle is transported to refining or casting position；
(2) cooling: to open water cooling or air cooling device and cool down to coil, prevent coil when subsequent energization from overheating；
(3) be powered: be passed through alternating current in coil, make to generate alternating flux in iron core, wherein size of current be 1~
10000A, frequency are 1~10000Hz；
(4) subsequent processing: after to be refined or casting complete, stop being powered, water cooling or air cooling device are closed, into subsequent processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230027.4A CN109128122A (en) | 2018-10-22 | 2018-10-22 | A kind of channel-type induction heating ladle device and heating means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230027.4A CN109128122A (en) | 2018-10-22 | 2018-10-22 | A kind of channel-type induction heating ladle device and heating means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109128122A true CN109128122A (en) | 2019-01-04 |
Family
ID=64809192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811230027.4A Pending CN109128122A (en) | 2018-10-22 | 2018-10-22 | A kind of channel-type induction heating ladle device and heating means |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052596A (en) * | 2019-05-27 | 2019-07-26 | 东北大学 | Butterfly induction heating tundish |
| CN114769523A (en) * | 2022-03-24 | 2022-07-22 | 中国科学院电工研究所 | Tundish superconducting induction heating device |
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| CN105567908A (en) * | 2016-01-18 | 2016-05-11 | 东北大学 | Double-tube type electromagnetic induction RH device and method for heating molten steel and removing inclusions |
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| CN107511474A (en) * | 2017-08-04 | 2017-12-26 | 福建圣力智能工业科技股份有限公司 | A kind of conticaster heating arrangements |
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| JPH03207563A (en) * | 1990-01-09 | 1991-09-10 | Kawasaki Steel Corp | Method for induction-heating conductive molten body |
| JPH0459156A (en) * | 1990-06-27 | 1992-02-26 | Kawasaki Steel Corp | Channel type induction heating apparatus and method for operating this |
| JPH0494089A (en) * | 1990-08-10 | 1992-03-26 | Fuji Electric Co Ltd | Induction heating apparatus of tandish |
| JPH04172155A (en) * | 1990-11-02 | 1992-06-19 | Nippon Steel Corp | Induction heating tundish for continuous casting |
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| CN2121670U (en) * | 1991-05-27 | 1992-11-11 | 王汝林 | Inter heat ring core induction electric oven |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052596A (en) * | 2019-05-27 | 2019-07-26 | 东北大学 | Butterfly induction heating tundish |
| CN114769523A (en) * | 2022-03-24 | 2022-07-22 | 中国科学院电工研究所 | Tundish superconducting induction heating device |
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Application publication date: 20190104 |