CN110052596B - Butterfly type induction heating tundish - Google Patents
Butterfly type induction heating tundish Download PDFInfo
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- CN110052596B CN110052596B CN201910447652.2A CN201910447652A CN110052596B CN 110052596 B CN110052596 B CN 110052596B CN 201910447652 A CN201910447652 A CN 201910447652A CN 110052596 B CN110052596 B CN 110052596B
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- chamber
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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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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
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Abstract
本发明涉及连铸技术领域，尤其涉及一种蝶式感应加热中间包，其包括包括：注流室、中间室、浇注室、第一承钢通道、至少两个第二承钢通道、至少两个感应加热装置；注流室通过第一承钢通道与中间室连通，中间室通过第二承钢通道与浇注室连通，钢液能够从注流室流经第一承钢通道进入中间室，再途经第二承钢通道流入浇注室，注流室和浇注室位于中间室的同侧；感应加热装置设置于中间室与浇注室之间，感应加热装置与第二承钢通道一一对应设置且能够加热第二承钢通道中的钢液。本发明的中间包内的钢液从注流室经第一承钢通道进入中间室，再途经第二承钢通道进入浇注室，感应加热装置使流经第二承钢通道的全部钢液都被加热，从而保证连铸胚体的内部质量。
The invention relates to the technical field of continuous casting, in particular to a butterfly-type induction heating tundish, which comprises: an injection chamber, an intermediate chamber, a pouring chamber, a first steel bearing channel, at least two second steel bearing channels, at least two an induction heating device; the injection chamber is communicated with the intermediate chamber through the first steel bearing channel, the intermediate chamber is communicated with the pouring chamber through the second steel bearing channel, and the molten steel can flow from the injection chamber through the first bearing steel channel into the intermediate chamber, Then it flows into the pouring chamber through the second steel bearing channel, and the pouring chamber and the pouring chamber are located on the same side of the intermediate chamber; the induction heating device is arranged between the intermediate chamber and the pouring chamber, and the induction heating device and the second bearing steel channel are arranged in one-to-one correspondence. And can heat the molten steel in the second steel bearing channel. The molten steel in the tundish of the present invention enters the intermediate chamber from the pouring chamber through the first steel bearing channel, and then enters the pouring chamber through the second steel bearing channel, and the induction heating device makes all the molten steel flowing through the second steel bearing channel completely is heated, thereby ensuring the internal quality of the continuous casting embryo.
Description
Technical Field
The invention relates to the technical field of continuous casting, in particular to a butterfly type induction heating tundish.
Background
The tundish is one of important devices in the continuous casting process, is positioned between a steel ladle and a crystallizer, is used as a final container before molten steel is solidified, is an intermediate link of a continuous casting production flow, and plays a role in starting and stopping in the continuous casting production. In the continuous casting production process, a large amount of heat loss exists in the flowing process of molten steel flowing into a tundish and the flowing process of the tundish, so that an external heating method needs to be searched for to compensate the heat loss of the tundish, and the heat loss in the ladle pouring process can be compensated by using an external means to heat the molten steel in the tundish.
In the prior art, a tundish without a heating device is modified, and a butterfly-shaped channel cored induction heating device is added on the basis of the original tundish, so that an external heat source is provided for the tundish, and the heat loss in the continuous casting process is compensated. However, the pouring cavity and the pouring cavity of the tundish are separated by the retaining wall, and the retaining wall is easy to leak or collapse along with the scouring of molten steel in the production and casting processes, so that a channel is opened between the pouring cavity and the pouring cavity, a part of molten steel directly flows into the pouring cavity from the pouring cavity and does not pass through the butterfly-shaped channel cored induction heating device, and if the retaining wall leaks, the problem is difficult to find in time, so that the quality of a continuous casting blank is influenced. Therefore, a part of molten steel can directly flow into the pouring cavity from the pouring cavity without passing through the butterfly-shaped channel cored induction heating device, so that only part of molten steel flowing through the device can be heated, and because the butterfly-shaped channel is too long, some inclusions are easily adsorbed and accumulated in the channel at the bent part to block the channel, thereby affecting the continuous casting efficiency.
Disclosure of Invention
Technical problem to be solved
The invention provides a butterfly type induction heating tundish, aiming at solving the problem that an induction heating device in the conventional tundish can only heat part of molten steel.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that: the device comprises a pouring chamber, an intermediate chamber, a pouring chamber, a first steel bearing channel, at least two second steel bearing channels and at least two induction heating devices; the pouring chamber is communicated with the intermediate chamber through the first steel bearing channel, the intermediate chamber is communicated with the pouring chamber through the second steel bearing channel, molten steel can flow from the pouring chamber through the first steel bearing channel, enter the intermediate chamber and then flow into the pouring chamber through the second steel bearing channel, and the pouring chamber are positioned on the same side of the intermediate chamber; the induction heating device is arranged between the middle chamber and the pouring chamber, and the induction heating device and the second steel bearing channel are arranged in a one-to-one correspondence mode and can heat molten steel in the second steel bearing channel.
Preferably, the induction heating device comprises an annular iron core and an electromagnetic coil wound on the iron core; the at least two induction heating devices are symmetrically distributed on two sides of the injection chamber, and the electromagnetic coils are wound on one end of the iron core close to the injection chamber.
Preferably, the direction of energization applied by the electromagnetic coils of at least two of the induction heating means is the same.
Preferably, the second steel bearing channel can penetrate through the iron core.
Preferably, the first steel bearing channel and the second steel bearing channel are both linear channels.
Preferably, the first steel bearing channel slopes downwards from the jet chamber to the intermediate chamber.
Preferably, the second steel bearing channel slopes downwards from the intermediate chamber to the pouring chamber.
Preferably, a plurality of pouring outlets are arranged on the pouring chamber, and the pouring outlets are distributed at equal intervals.
Preferably, the butterfly-type induction heating tundish further comprises a heat dissipation device for dissipating heat of the induction heating device.
(III) advantageous effects
The invention has the beneficial effects that: compared with the prior art, the butterfly type induction heating tundish provided by the invention is provided with the three independent pouring chambers, the intermediate chamber and the pouring chamber which are connected through the first steel bearing channel and the second steel bearing channel, and the pouring chambers, the intermediate chamber and the pouring chamber can not be damaged by continuous flushing of molten steel, and the phenomenon of collapse can not occur. Molten steel in the tundish enters the intermediate chamber from the pouring chamber through the first steel bearing channel and then enters the pouring chamber through the second steel bearing channel, and then pouring is carried out, the induction heating device can heat all the flowing molten steel, and the molten steel is prevented from blocking the channel due to heat loss, so that the internal quality of a continuous casting blank is ensured, and the continuous casting efficiency is also improved; the middle chamber and the second steel bearing channel are additionally arranged, so that the residence time of the molten steel in the tundish is increased, the heating efficiency is improved, the flow stabilizing effect is well improved, the independent arrangement of the flow injection chamber, the middle chamber and the pouring chamber is convenient to maintain, the problem is convenient to find, and the safety is greatly improved.
Drawings
FIG. 1 is a schematic structural view of a butterfly induction heating tundish of the present invention;
FIG. 2 is a schematic top view of a butterfly induction heating tundish of the present invention;
FIG. 3 is a heating schematic of the induction heating unit of FIG. 1;
fig. 4 is a schematic diagram of the relative positions of the pouring chamber, the intermediate chamber and the pouring chamber.
[ description of reference ]
1: a flow injection chamber; 2: an intermediate chamber; 3: a pouring chamber; 4: a first steel bearing channel; 5: a second steel bearing channel; 6: an induction heating device; 61: an electromagnetic coil; 62: an iron core; 7: and (4) a pouring outlet.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention provides a butterfly type induction heating tundish, which comprises an injection chamber 1, a middle chamber 2, a pouring chamber 3, a first steel bearing channel 4, at least two second steel bearing channels 5 and an induction heating device 6, wherein the injection chamber 1 is arranged in the middle chamber 2; the pouring chamber 1 is connected with the intermediate chamber 2 through 4 channels of first steel bearing, the intermediate chamber 2 is connected with the pouring chamber 3 through a second steel bearing channel 5, molten steel can flow from the pouring chamber 1 through the first steel bearing channel 4 to enter the intermediate chamber 2 and then flow into the pouring chamber 3 through the second steel bearing channel 5, the pouring chamber 1 and the pouring chamber 3 are positioned on the same side of the intermediate chamber 2, and when the pouring chamber 1 is positioned on the left side of the intermediate chamber 2, the pouring chamber 3 is also positioned on the left side of the intermediate chamber 2; when the pouring chamber 1 is arranged on the right side of the middle chamber 2, the pouring chamber 3 is also arranged on the right side of the middle chamber 2, so that the distribution is favorable for saving space and reducing heat loss; the induction heating device 6 is arranged between the intermediate chamber 2 and the pouring chamber 3 and can heat the molten steel in the second steel bearing channel 5. Compared with the prior art, the butterfly type induction heating tundish provided by the invention is provided with the three independent pouring chambers 1, the intermediate chamber 2 and the pouring chamber 3 which are connected through the first steel bearing channel 4 and the second steel bearing channel 5, and the continuous flushing of the molten steel can not damage the pouring chambers 1, the intermediate chamber 2 and the pouring chamber 3 and can not collapse.
In the continuous casting process, molten steel in a steel ladle is injected into a tundish, the molten steel in the tundish enters a middle chamber 2 from an injection chamber 1 through a first steel bearing channel 4, then enters a casting chamber 3 through a second steel bearing channel 5, and then flows out of a casting outlet 7 of the casting chamber 3 and flows into a crystallizer, all the molten steel flowing through an induction heating device 6 can be heated in the process, the molten steel is prevented from blocking the channel due to heat loss, the internal quality of a continuous casting blank is guaranteed, and the continuous casting efficiency is also improved. The butterfly type induction heating tundish has the advantages of high heating efficiency, low heat loss, high temperature control precision, no pollution, good heating quality, simplicity in operation and easiness in control.
In a preferred embodiment, as shown in fig. 1 and 3, the induction heating unit 6 includes an iron core 62 having a ring shape and an electromagnetic coil 61 wound around the iron core 62; at least two induction heating devices 6 are symmetrically distributed on two sides of the injection chamber 1, the electromagnetic coil 61 is wound at one end of the iron core 62 close to the injection chamber 1, and the second steel bearing channel 5 can penetrate through the iron core 62, so that the induction heating devices 6 can fully heat all the molten steel flowing through the second steel bearing channel 5, and the heat loss of the molten steel is reduced to the minimum. Wherein, the induction heating device 6 uses two electromagnetic coils 61 and two iron cores 62 in match, so that the induced current in the closed loop is generated by the two electromagnetic coils 61 together, thereby reducing the power of the single electromagnetic coil 61, the heating speed is high, and simultaneously the heat dissipation pressure is also greatly reduced by the structure of the two iron cores 62 and the two electromagnetic coils 61. The overheated high and damage or the stop work that can make solenoid 61 and iron core 62 of induction heating device 6, thereby can't hold the molten steel in the steel passageway 5 to the second and heat, thereby lead to the molten steel heat loss problem, in order to prevent that induction heating device 6 is overheated, package still includes and is used for carrying out radiating heat abstractor to induction heating device 6 in the middle of the butterfly induction heating, prevent that the high temperature in the heating process, thereby reduce the harm to package in the middle of the butterfly induction heating, can also improve the security, strengthen the protection to annotate and flow room 1, middle room 2 and pouring room 3. The induction heating device 6 provides an external heat source for the butterfly type induction heating tundish, compensates the heat loss in the continuous casting process, realizes the constant-temperature pouring in the continuous casting process, and improves the removing effect of inclusions in molten steel, thereby improving the quality of the surface and the inside of a continuous casting blank.
Aiming at the condition that the distance between the original pouring cavity and the pouring cavity of the tundish is too close and a cored induction heating device cannot be used and the condition that the existing butterfly-shaped channel cored induction heating device can only heat part of molten steel flowing through the cored induction heating device, the invention provides a tundish transformation method of an induction heating device 6 with at least two iron cores 62 and two electromagnetic coils 61 by adopting the basic principle based on induction heating. Further, the two electromagnetic coils 61 are respectively wound on the two iron cores 62 in a one-to-one correspondence manner, the winding directions of the two electromagnetic coils 61 are the same, the electromagnetic coils 61 are electrified by single-phase alternating current, the electrifying directions applied by the electromagnetic coils 61 are the same, the directions of magnetic fields generated in a closed loop are also the same, the magnetic fields are mutually overlapped, induced current is generated in the second steel bearing channel 5, and molten steel in the second steel bearing channel 5 is subjected to induction heating. Two second steel bearing channels 5 penetrating through the two iron cores 62, the intermediate chamber 2 and the pouring chamber 3 form a closed loop, the induced joule heat is mainly concentrated in the two second steel bearing channels 5, and molten steel in the second steel bearing channels 5 is heated through the joule heat. Therefore, the induction heating device 6 can sufficiently heat all the molten steel flowing through the second steel bearing channel 5, thereby improving the efficiency of continuous casting and effectively ensuring the quality of the interior of the continuous casting blank.
In addition, as shown in fig. 4, the first steel bearing channel 4 and the second steel bearing channel 5 are both linear channels, and both the first steel bearing channel 4 and the second steel bearing channel 5 can be linear channels, so that the first steel bearing channel 4 and the second steel bearing channel 5 can be effectively prevented from being blocked by inclusions in molten steel, the continuous casting efficiency is improved, the maintenance frequency of a tundish can be reduced, and the quality of a blank body which can be continuously cast by the inclusions is reduced. In a more preferable embodiment, the first steel receiving channel 4 is inclined downwards from the pouring chamber 1 by a certain angle to reach the intermediate chamber 2, so that the molten steel poured from a steel ladle can timely flow into the intermediate chamber 2 through the first steel receiving channel 4, heat loss caused by too long retention time of the molten steel in the pouring chamber 1 can be effectively prevented, the second steel receiving channel 5 is inclined downwards from the intermediate chamber 2 by a certain angle to reach the pouring chamber 3, so that the molten steel in the intermediate chamber 2 can quickly enter the pouring chamber 3 through the second steel receiving channel 5, the retention time of the molten steel in the intermediate chamber 2 is reduced, the molten steel in the second steel receiving channel 5 is heated as soon as possible, the first steel receiving channel 4 and the second steel receiving channel 5 both have obvious inclination angles, the situation that the molten steel does not occur in the butterfly-type induction intermediate ladle can be ensured, and the heating process is smooth, and the heating device can ensure that all the molten steel injected into the butterfly induction tundish can be heated, thereby ensuring the internal quality of the continuous casting blank.
Furthermore, a plurality of pouring outlets 7 are arranged on the pouring chamber 3, the pouring outlets 7 are distributed at equal intervals, the simultaneous pouring of the pouring outlets 7 and the equal distribution of the pouring outlets 7 can play a good shunting role, the pouring speed can be accelerated, the pouring pressure of a single pouring outlet 7 can be reduced, and the heat loss caused by overlong residence time of molten steel in the pouring chamber 3 can be reduced.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (7)
1. The utility model provides a package in middle of butterfly induction heating which characterized in that: the middle package of butterfly induction heating includes: the device comprises a pouring chamber, an intermediate chamber, a pouring chamber, a first steel bearing channel, at least two second steel bearing channels and at least two induction heating devices; the pouring chamber is communicated with the intermediate chamber through the first steel bearing channel, the intermediate chamber is communicated with the pouring chamber through the second steel bearing channel, molten steel can flow from the pouring chamber through the first steel bearing channel, enter the intermediate chamber and then flow into the pouring chamber through the second steel bearing channel, and the pouring chamber are positioned on the same side of the intermediate chamber; the induction heating devices are arranged between the middle chamber and the pouring chamber, the induction heating devices are arranged corresponding to the second steel bearing channels one by one and can heat the molten steel in the second steel bearing channels,
the first steel bearing channel inclines downwards from the injection chamber to the middle chamber;
the second steel bearing channel is inclined downwards from the middle chamber to the pouring chamber.
2. A butterfly induction heating tundish according to claim 1, wherein: the induction heating device comprises an annular iron core and an electromagnetic coil wound on the iron core; the at least two induction heating devices are symmetrically distributed on two sides of the injection chamber, and the electromagnetic coils are wound on one end of the iron core close to the injection chamber.
3. A butterfly induction heating tundish according to claim 2, wherein: the energizing directions applied by the electromagnetic coils of at least two of the induction heating devices are the same.
4. A butterfly induction heating tundish according to claim 3, wherein: the second steel bearing channel penetrates through the iron core.
5. A butterfly induction heating tundish according to any one of claims 1 to 4, wherein: the first steel bearing channel and the second steel bearing channel are both linear channels.
6. A butterfly induction heating tundish according to any one of claims 1 to 4, wherein: the pouring chamber is provided with a plurality of pouring outlets which are distributed at equal intervals.
7. A butterfly induction heating tundish according to any one of claims 1 to 4, wherein: the butterfly type induction heating tundish further comprises a heat dissipation device for dissipating heat of the induction heating device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910447652.2A CN110052596B (en) | 2019-05-27 | 2019-05-27 | Butterfly type induction heating tundish |
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| CN201910447652.2A CN110052596B (en) | 2019-05-27 | 2019-05-27 | Butterfly type induction heating tundish |
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| CN110052596B true CN110052596B (en) | 2021-03-26 |
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| CN110918961B (en) * | 2019-12-24 | 2021-10-29 | 重庆大学 | An induction heating channel and tundish for removing inclusions in molten steel |
| CN116833399B (en) * | 2023-07-10 | 2025-06-27 | 北京科技大学 | Steel continuous casting induction heating tundish and control method thereof |
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