CN108856687A - A kind of multithread square billet induction heating tundish - Google Patents
A kind of multithread square billet induction heating tundish Download PDFInfo
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- CN108856687A CN108856687A CN201810992246.XA CN201810992246A CN108856687A CN 108856687 A CN108856687 A CN 108856687A CN 201810992246 A CN201810992246 A CN 201810992246A CN 108856687 A CN108856687 A CN 108856687A
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- Prior art keywords
- tundish
- electromagnetic induction
- induction coil
- multithread
- refractory material
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The present invention discloses a kind of multithread square billet induction heating tundish, it is characterised in that：It includes tundish ontology, it is separated to form in the tundish ontology with refractory material wall and holds steel chamber and mold cavity, pairs of electromagnetic induction coil is housed inside the refractory material wall, the left and right sides of each electromagnetic induction coil is respectively symmetrically equipped with ladle canal, the ladle canal of the ladle canal perforation refractory material wall holds steel chamber and mold cavity for connection, it is connected in series between the electromagnetic induction coil, each electromagnetic induction coil is respectively connected with magnetic conduction iron yoke.The invention belongs to continuous-casting arts, are improved by the structure to existing tundish, the technical effect for realizing and promoting Slab quality, improve production process safety.
Description
Technical field
The invention belongs to continuous casting technology fields, and in particular to a kind of multithread square billet induction heating tundish.
Background technique
Production practices prove, electromagnetic induction heater is arranged in continuous casting production, and realization is to the temperature-compensating of molten steel
A kind of ideal means, while realizing continuous casting constant temperature casting, moreover it is possible in purification molten steel, effectively remove non-metallic inclusion
Aspect has original effect.Domestic at present, external induction heating is used only in three machines three stream or less than three stream billet continuous castings below
On tundish, the main reason is that flow field is easy arrangement.And for the multithread square billet of four streams or more, the transverse direction of tundish adds
Long, this common induction heating by 2 channels is difficult to obtain uniform flow field, to influence the product of the slab of continuous casting
Matter.Another important influence is that, as the molten steel amount of tundish increases simultaneously, the weight of entire tundish also substantially increases
Adding, the weight under extreme case such as still can be 2 chip flanged joints for safety up to 120~160t, intermediate incrustation,
Then tundish can bring great risk because the mechanical strength of intermediate insulation bed course is inadequate, this is that continuous casting cannot allow
's.Therefore, as to Slab quality increasingly higher demands, multithread square billet application induction heating is increasingly becoming a kind of trend.It opens
The induction heating tundish for sending out to be applicable in multithread square billet a kind of is imperative.
But in production casting process, with washing away for molten steel, barricade is easy to collapse, the factors such as jet hole variable diameter
Variation, tundish lateral length is very long, thus the Flow and heat flux for wrapping interior molten steel is caused to be difficult to uniformly, packet flow field and
Change therewith, cause tundish local temperature too low, flow field disorder and it is uneven, thus influence it is each stream slab quality discrepancy.
Work as tundish preponderance simultaneously, excessive stress when tundish lifts by crane, and temperature change when intermediate incrustation use and produce
Raw deformation, insulating materials generates deformation because of character difference, to influence the tundish backpack body service life, and then reduction permanent layer makes
With the service life, increase production cost.
Summary of the invention
For the Slab quality of the existing technology pointed out in background technique is low and overweight two danger of tundish quality
And the technical problems such as insulating blanket, it is intended to a kind of multithread square billet induction heating tundish is proposed, by the way that electromagnetic induction coil is arranged
And the structure improved inside tundish designs, the skill for realizing control uniform flow field, promoting Slab quality, improving production security
Art effect.
Technical solution
A kind of multithread square billet induction heating tundish, it is characterised in that：It includes tundish ontology, the tundish ontology
Interior be separated to form with refractory material wall holds steel chamber and mold cavity, and pairs of electromagnetic induction is housed inside the refractory material wall
Coil, the left and right sides of each electromagnetic induction coil are respectively symmetrically equipped with ladle canal, and the ladle canal penetrates through refractory material
The ladle canal of wall holds steel chamber and mold cavity for connection, is connected in series between the electromagnetic induction coil, each electricity
Magnetic induction coil is respectively connected with magnetic conduction iron yoke.
Further, the electromagnetic induction coil is two.
Further, described to hold steel chamber and the mold cavity to weld by integral plate.
Further, the ladle canal is arranged in parallel, vertically through refractory material wall.
Further, the mold cavity bottom is provided with mold gap, corresponding 1 or 2 knot of the every ladle canal
The brilliant device mouth of a river.
Beneficial effect
Tundish of the invention controls uniform flow field, and involucrum is all formed by steel plate integral solder, lifts by crane intensity, backpack body
The standing intensity of gravity, production impact strength are fully ensured that by the way that design is available, are avoided the hidden danger because of caused by material, are solved
The inadequate problem of common induction heating tundish insulation mechanical strength of having determined, greatly improves safety.The stream of molten steel simultaneously
To being changed, is flung by original into casting area, be changed to first lateral flow, casting area is flowed by channel again, is increased
Flowing or molten steel residence time, it is easy to realize the Uniform Flow of ladle canal, stream field design is extremely advantageous, so that multithread side
The continuous casting of base can be used induction heating function and promote Slab quality.
Detailed description of the invention
Fig. 1 is each composition structural schematic diagram of the present invention.
Fig. 2 is ladle canal distribution schematic diagram.
Fig. 3 is overall structure of the present invention.
Specific embodiment
Below in conjunction with drawings and examples, the present invention is made further instructions.
A kind of multithread square billet induction heating tundish, it includes tundish ontology 1, uses fire resisting in the tundish ontology 1
Material wall 2, which is separated to form, holds steel chamber 3 and mold cavity 4, and pairs of electromagnetic induction coil is housed inside the refractory material wall 2
5, the left and right sides of each electromagnetic induction coil 5 is respectively symmetrically equipped with ladle canal 7, and the ladle canal 7 penetrates through refractory material
The ladle canal 7 of wall 2 holds steel chamber 3 and mold cavity 4 for connection, is connected in series between the electromagnetic induction coil 5, described every
A electromagnetic induction coil 5 is respectively connected with magnetic conduction iron yoke 6.
In the present embodiment, the ladle canal 7 is arranged in parallel, vertically through refractory material wall 2.
As shown in figure 3,4 bottom of mold cavity is equipped with mold gap 8, the every ladle canal 7 in the present embodiment
Corresponding 1 or 2 mold gaps 8.
A kind of multithread induction heating tundish proposed by the present invention, be first based on even flow field for the purpose of angle.Mesh
The distinguishing feature of the bloom multithread billet continuous casting of preceding prevalence is that stream spacing is big (1600~2200mm), and fluxion is more (4~9 stream),
Tundish lateral length is very long, thus the Flow and heat flux for wrapping interior molten steel is caused to be difficult to uniformly.The centre of non-inductance heating
Packet adds the mode of jet hole by middle retaining wall, as far as possible close to the requirement of uniform flow field.But in production casting process, with molten steel
Wash away, barricade is easy to collapse, the variation of the factors such as jet hole variable diameter, packet flow field and change therewith, cause tundish
Local temperature is too low, flow field disorder and it is uneven, thus influence it is each stream slab quality discrepancy.In the present invention, using 4 plume steel
Channel 7 respectively corresponds each fluxion of tundish, as shown in Figure 2.
Steel chamber 3 and mold cavity 4 are held as integral plate welding, is dielectrically separated from without spacer flanger, induced current is limited in
It ensure that the design maximum intensity of tundish while in molten steel.Two 5 series operations of electromagnetic induction coil, work as continuous casting
When, the molten steel in tundish is even height certainly, thus ensure that the induced current that 4 ladle canals 7 generate be it is identical,
And it is independent of each other；
The present invention is equipped with cylindrical cavity, institute in refractory material wall 2 in application, installation about electromagnetic induction coil 5
It states cavity and is provided with stainless steel tube, be set with electromagnetic induction coil 5 on stainless steel tube, it can be on the electromagnetic induction coil 5
It is set with sleeve, prevents electromagnetic induction coil 5 because of contact periphery when situations such as time is permanent or temperature increases, accidental vibration occurs
Refractory material wall 2 and damage.
As shown in Figure 1, the flow field of common multithread square billet is difficult to realize uniformity, it is because each mouth of a river distance farther out, obtains
Fresh molten steel while property is obtained to be difficult to ensure.The tundish feature of this patent is that 4 ladle canals 7 are arranged in parallel, uniform point
Cloth passes through the distance to ladle canal 7 and adjusts in the bottom for holding steel chamber 3, it is easy to realize molten steel from channel reach the mouth of a river when
Between consistency also increase molten steel among this in incrustation to ensure that into the uniformity of MOLTEN STEEL FLOW in steel chamber 3 is held
Flowing away from discrete time, sufficiently float for field trash and create advantage.
As shown in figure 1 and 2, the present invention is in application, can set there are two electromagnetic induction coil 5, magnetic conduction iron yoke 6 and electricity
Magnetic induction coil 5 should be all installed in inside tundish, and magnetic conduction iron yoke 6 and electromagnetic induction coil must be arranged in pairs, to protect
Demonstrate,proving the induced current that outer ring of the present invention generates is zero, it is ensured that equipment safety.
If 3,4 strands of ladle canals 7 of attached drawing are respectively A/B/C/D, the corresponding 2 continuous casting fluxions of per share ladle canal 7.In design
Between packet stream field when, the position of strand be it is fixed, and the position of ladle canal 7 can according to need it is mobile, therefore such as
Arrangement shown in Fig. 2 is easily achieved the Uniform Flow of 8 stream in figure, i.e., logical by stream steel in ladle in molten steel to tundish
Road 7, which arrives separately at 8 streams, can accomplish substantially simultaneously, and flows and stablize.Therefore, tundish stream field of the invention designs extremely
Favorably, the flow field for solving the problems, such as that common non-inductance heating tundish can not overcome is not easy to arrange.
This invention also solves current induction heating tundish common problems：Insulating layer is difficult to handle.Previous sense
Tundish should be heated, fluxion is few, and transverse direction is short, and melting steel amount is few in tundish, thus, among the tundish with induction heating absolutely
Edge layer is still able to satisfy it and is lifted by crane bring extruding or drawing force using high-intensitive special material insulation.The induction of multi-strand tundish
Heating application, the problem of bringing weight increase, routinely insulating Design, the extruding or drawing force that insulant is born increase compared with
It is more, this intensity requirement is unable to satisfy in current insulating materials.And tundish of the invention is by the way of whole design, i.e.,
The backpack body of tundish is all welded by conductive steel plate, electromagnetic induction coil 5 is placed in tundish, by entire electromagnetic induction
Body surrounds.
It is of the invention that interior center is wrapped along cross according to attached drawing 1 and attached drawing 2 using steel shell material in application, making intermediate incrustation
Only have a gap with being dielectrically separated to direction, this gap is not by the extruding of any direction and drawing force, and involucrum is all by steel plate
Integral solder forms, and lifting intensity, backpack body stand the intensity of gravity, production impact strength by designing available abundant guarantor
Card, eliminates the hidden danger because of caused by material, improves the safety of production.
As shown in Fig. 1, when induction heating tundish of the invention production, the molten steel to get off from ladle is fallen in first holds steel
In chamber 3, by refractory material wall 2 being arranged between chamber separating holding steel chamber 3 and pour, then penetrated through by ladle canal 7
The communication of refractory material wall 2 holds steel chamber 3 and pours chamber, and ladle canal 7 is parallel and is uniformly distributed, and holds in steel chamber 3 when molten steel enters
Molten steel can be evenly distributed to 4 ladle canals 7 as shown in Figure 1, the molten steel come out from ladle canal 7 enters tundish
Mold cavity 4, every ladle canal 7 is by arrangement outlet flow direction, to reach the best path for reaching the mouth of a river, in the hope of uniform steel flow
?.The every corresponding mouth of a river of ladle canal 7 is apart from close, therefore uniform flow field is readily available, as long as avoiding short-circuit flow.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of multithread square billet induction heating tundish, it is characterised in that：It includes tundish ontology (1), the tundish sheet
It is separated to form in body (1) with refractory material wall (2) and holds steel chamber (3) and mold cavity (4), the refractory material wall (2) is internal
Equipped with pairs of electromagnetic induction coil (5), the left and right sides of each electromagnetic induction coil (5) is respectively symmetrically equipped with ladle canal
(7), the ladle canal (7) of ladle canal (7) perforation refractory material wall (2) holds steel chamber (3) and mold cavity for connection
(4), it is connected in series between the electromagnetic induction coil (5), each electromagnetic induction coil (5) is respectively connected with magnetic conduction iron yoke
(6)。
2. a kind of multithread square billet induction heating tundish as described in claim 1, it is characterised in that：The electromagnetic induction coil
It (5) is two.
3. a kind of multithread square billet induction heating tundish as described in claim 1, it is characterised in that：It is described hold steel chamber (3) and
The mold cavity (4) is to be welded by integral plate.
4. a kind of multithread square billet induction heating tundish as described in claim 1, it is characterised in that：The ladle canal (7)
It is arranged in parallel, vertically through refractory material wall (2).
5. a kind of multithread square billet induction heating tundish as described in claim 1, it is characterised in that：Mold cavity (4) bottom
Portion is provided with mold gap (8), and the every ladle canal (7) corresponds to 1 or 2 mold gaps (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810992246.XA CN108856687A (en) | 2018-08-29 | 2018-08-29 | A kind of multithread square billet induction heating tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810992246.XA CN108856687A (en) | 2018-08-29 | 2018-08-29 | A kind of multithread square billet induction heating tundish |
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| Publication Number | Publication Date |
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| CN108856687A true CN108856687A (en) | 2018-11-23 |
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| CN201810992246.XA Pending CN108856687A (en) | 2018-08-29 | 2018-08-29 | A kind of multithread square billet induction heating tundish |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112371969A (en) * | 2020-10-20 | 2021-02-19 | 青岛正望钢水控制股份有限公司 | Implementation method of functional refractory material of channel type electromagnetic induction heating tundish |
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| JP2009166110A (en) * | 2008-01-18 | 2009-07-30 | Nippon Steel Corp | Tundish for continuous casting, and method for preventing penetration of metal into refractory thereof |
| CN201768886U (en) * | 2010-07-26 | 2011-03-23 | 上海东震冶金工程技术有限公司 | Tundish molten steel magnetomotive refining device |
| CN102009143A (en) * | 2010-12-29 | 2011-04-13 | 北京科技大学 | Channel induction heating device of compact cross-shaped tundish |
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| JP2009166110A (en) * | 2008-01-18 | 2009-07-30 | Nippon Steel Corp | Tundish for continuous casting, and method for preventing penetration of metal into refractory thereof |
| CN201768886U (en) * | 2010-07-26 | 2011-03-23 | 上海东震冶金工程技术有限公司 | Tundish molten steel magnetomotive refining device |
| CN102009143A (en) * | 2010-12-29 | 2011-04-13 | 北京科技大学 | Channel induction heating device of compact cross-shaped tundish |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112371969A (en) * | 2020-10-20 | 2021-02-19 | 青岛正望钢水控制股份有限公司 | Implementation method of functional refractory material of channel type electromagnetic induction heating tundish |
| CN112371969B (en) * | 2020-10-20 | 2021-09-24 | 青岛正望钢水控制股份有限公司 | Implementation method of functional refractory material of channel type electromagnetic induction heating tundish |
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