CN104801685A - Device for effectively inhibiting fluctuation of liquid surface of crystallizer - Google Patents
Device for effectively inhibiting fluctuation of liquid surface of crystallizer Download PDFInfo
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- CN104801685A CN104801685A CN201510240749.8A CN201510240749A CN104801685A CN 104801685 A CN104801685 A CN 104801685A CN 201510240749 A CN201510240749 A CN 201510240749A CN 104801685 A CN104801685 A CN 104801685A
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
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Abstract
The invention discloses a device for effectively inhibiting fluctuation of a liquid surface of a crystallizer, and belongs to the technical field of the optimization of a crystallizer process. The device comprises a conflux mechanism, a distributing mechanism and a connecting mechanism, wherein a conflux opening which is communicated with the conflux device is formed in the side surface of the conflux device, a baffle plate is arranged inside the conflux device, a circular hole is formed in the upper part of the conflux device, the circular hole is communicated with a connecting pipe above the circular hole, and the connecting pipe is communicated with an outflow opening; a distributor is a cuboid, the upper part of the distributor is provided with a plurality of through holes which are gradually increased from the center to two sides of the distributor, and a rectangular groove is formed in the lower part of the distributor; the outflow opening is connected with a suspension column, the suspension column is connected with the distributor, one end of the large suspension column is connected with the distributor, and the other end of the large suspension column is connected with exterior. By adopting the device, the fluctuation of the liquid surface of the crystallizer under the high pulling speed can be inhibited; the phenomenon that the steel liquid amount released from a water gap on the distributor is non-uniform can be effectively prevented.
Description
Technical field
The present invention relates to crystallizer process optimization technical field, more particularly, relate to a kind of device of effective suppression liquid level fluctuation of crystallizer.
Background technology
In the production process of continuous casting process, molten steel enters crystallizer from tundish by submersed nozzle.When casting speed is higher, larger level fluctuation is had in crystallizer, this is because under same crystallizer width, pulling rate increases, speed and the flow of stream plume delivery port side opening increase, stream stock increases the impulsive force of crystallizer leptoprosopy, the upper circulating flow strength flowing stock is caused to increase, the shearing force of upper recirculating zone and the top of the slag increases, cause the fluctuation in various degree of whole mold liquid level, wherein particularly evident with the part fluctuation close to meniscus, and high pulling rate can cause the increase of lower circulating flow strength, a large amount of field trash is flow to into molten steel deep with liquid, more difficult floating.
The harm that mould liquid level larger fluctuation is brought mainly contains: (1) liquid fluctuating can increase the slag risk of crystallizer molten steel, and inclusion in casting blank content overproof will have a strong impact on the quality of strand and final products; (2) liquid fluctuating can affect the three-decker of crystallizer protecting residue, destroys lubricity and the balance heat transfer of crystallizer protecting residue; (3), when liquid level fluctuation of crystallizer is serious, the lobe of strand even can be caused to leak, be mingled with the pernicious production accidents such as leakage.
How under the prerequisite ensureing output and product quality, to suppress liquid level fluctuation of crystallizer, be a puzzlement Ferrous Metallurgy manufacturing enterprise difficult problem for many years.Pass through patent retrieval, existing relevant technical scheme is open at present, as China Patent No.: 200710047480.7, the applying date: on October 26th, 2007, invention and created name is: the continuous casting crystallizer device of controlled liquid level flow field and fluctuation, the device of the suppression liquid level fluctuation of crystallizer of this application case is by submersed nozzle, smoothing roll, guide roller, transfer to roller, consumption metallic plate, covering slag, strand, water-cooled crystallizer and dummy bar composition, this device newly adds smoothing roll on traditional continuous cast mold equipment, guide roller, transfer to roller and consumption metallic plate, crystallization control device liquid fluctuating is carried out by carrying consumption metallic plate in crystallizer, wherein consumption metallic plate composition is identical with the composition of continuous casting billet in crystallizer.For this application case, applicant has done repeatedly analog computation and has found: (1) is admitted to after in crystallizer when this consumption metallic plate, because this consumption metallic plate consumption of calorie is larger, break the thermal balance in crystallizer, reduce molten steel in mold temperature, reduce fluidity molten steel, making slag and Slag inclusion float and are difficult to carry out.(2) after this consumption metallic plate is admitted to molten steel, its fusing is not top-down, the part that the jet sprayed with submersed nozzle side opening directly contacts can melt at first, form a hole, the feeding speed calculating consumption metallic plate can be difficult to like this, in order to ensure " balance between revenue and expenditure " of molten steel and strand in crystallizer, Casting speed also can be difficult to determine.So the technical scheme that this application case provides, is difficult to be applied in actual production process.
In sum, though make many experiments and research to the control of liquid level fluctuation of crystallizer in prior art, but be finally difficult to extensive universal, trace it to its cause two: the installation cost of (1) crystallization control device liquid fluctuating is too high, and under continuous casting scene is in high temperature, skimming device is not easy to safeguard; (2) effect controlling liquid fluctuating is undesirable, even can cause new harm, lose more than gain.In casting process, how realizing the effect of good suppression liquid level fluctuation of crystallizer, and can remove inclusion content in melting steel further, to realize the smelting target of high purity steel, is a puzzlement Ferrous Metallurgy manufacturing enterprise difficult problem for many years.
Applicant Anhui University of Technology has submitted the innovation and creation application for the problems referred to above on February 27th, 2015, its specifying information is as follows, application number: 2015100899233, invention and created name: the device suppressing liquid level fluctuation of crystallizer under a kind of high pulling rate, applicant: Anhui University of Technology, the applying date: on February 27th, 2015.But; the device of liquid level fluctuation of crystallizer is suppressed also to there is following technological deficiency under this high pulling rate: to find in actual production process; the molten steel amount distribution that the current divider mouth of a river on current divider is flowed out is very uneven; thus the impact causing covering slag to accept is uneven, be unfavorable for suppressing liquid level fluctuation of crystallizer.In sum, how guaranteeing to suppress the device of liquid level fluctuation of crystallizer can play good result of use in actual production process, is the technical problem needing solution in prior art badly.
Summary of the invention
1. invent the technical problem that will solve
The object of the invention is to overcome in actual production process suppresses the device of liquid level fluctuation of crystallizer cannot realize the effect of suppression liquid fluctuating good in crystallizer, provide a kind of device of effective suppression liquid level fluctuation of crystallizer, adopt technical scheme of the present invention, effectively can suppress the liquid fluctuating of crystallizer under high pulling rate, and then reduce the odds such as lobe leakage of slag, strand, effectively remove and flow to field trash into molten steel deep next time with crystallizer, and can effectively suppress the current divider mouth of a river discharges the uneven phenomenon of molten steel amount.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
The device of a kind of effective suppression liquid level fluctuation of crystallizer of the present invention, comprises conflux mechanism, diversion mechanism and bindiny mechanism, wherein:
Described conflux mechanism comprises water trap, flow-stopping plate, goes out head piece and converging inlet, and described water trap is a cylinder, and this cylinder inside is provided with cylindrical cavity, and water trap side is provided with coupled logical converging inlet, and converging inlet upper edge tilts upward; Described water trap inside is provided with flow-stopping plate, and this flow-stopping plate is fixed on the junction of water trap and converging inlet upper edge, and flow-stopping plate tilts downwards; Described water trap top is provided with circular port, and this circular port is connected with the tube connector above it; Described goes out the rectangular block that head piece is its central band through hole in, and described tube connector is connected with the head piece that goes out above it;
Described diversion mechanism comprises current divider, and described current divider is a cuboid, and current divider top is provided with some through holes, and current divider bottom is provided with rectangular recess; Some through holes on described current divider top are along the distribution of current divider bilateral symmetry, and from the center of current divider to current divider both sides, the size of through hole increases successively;
Described bindiny mechanism comprises davit and large davit, and described four angles going out head piece upper surface are connected with one end of 4 davits respectively, and the other end of above-mentioned 4 davits is connected with current divider lower surface; Described large davit one end is connected with the central point of current divider upper surface, and the large davit other end is connected with the external world;
Above-mentioned conflux mechanism, diversion mechanism and bindiny mechanism are made up of mild steel sections, and the surfaces externally and internally of described mild steel sections is equipped with coat.
Further improve as of the present invention, described converging inlet upper edge positive pitch=downward inclination angle × 2 of submersed nozzle side opening.
Further improve as of the present invention, the downward inclination angle of described flow-stopping plate is 16 °.
Further improve as of the present invention, described large davit is connected with tundish bottom or outside support.
Further improve as of the present invention, described current divider top is provided with 6 through holes, and above-mentioned 6 through holes are symmetrical about large davit.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following remarkable result:
(1) device of a kind of effective suppression liquid level fluctuation of crystallizer of the present invention, by conflux mechanism, diversion mechanism and bindiny mechanism together constitute the device of the suppression liquid level fluctuation of crystallizer of ad hoc structure, found by hydraulic model trial: casting speed is larger, the jet intensity of submersed nozzle side opening is larger, the intensity that jet under being tilted to is ejected into crystallizer wall is larger, the liquid flowing strength of up and down two recirculating zones formed is larger, due to the shearing force of upper backflow, there is larger fluctuation in mold liquid level, also not easily float with the field trash flow to next time into molten steel deep.This jet can be introduced in water trap by converging inlet before the jet hit crystallizer wall under being tilted to by the device of a kind of effective suppression liquid level fluctuation of crystallizer of the present invention, in water trap, momentum of impinging jet reduces and is disperseed, simultaneously due to the effect of flow-stopping plate in water trap, jet is difficult to be flowed out by converging inlet again, flow out by going out head piece after being introduced into the momentum of impinging jet reduction of water trap, meet current divider and be evenly dispersed, finally flowed out by the current divider mouth of a river and contact with covering slag, due to the stop of current divider side plate, liquid stream can not circumvent current divider and directly impact crystallizer wall, liquid level fluctuation of crystallizer is well suppressed, major part field trash also directly guides covering slag into by this device, effectively liquid level fluctuation of crystallizer is inhibit while guarantee inclusion removal, avoid the harm that mould liquid level larger fluctuation is brought, improve the flow field in crystallizer.
(2) applicant finds through a large amount of field experiment, if the current divider mouth of a river size on current divider is the same, the incoming flow with certain kinetic energy impacts on current divider, the molten steel amount flowed out near the current divider mouth of a river at current divider center is greater than the molten steel amount that other current divider mouths of a river are flowed out, the impact causing covering slag to accept is uneven, is unfavorable for suppressing liquid level fluctuation of crystallizer; The system of effective suppression liquid level fluctuation of crystallizer of a kind of lifting of the present invention, wherein current divider top is provided with some through holes (through hole is herein the current divider mouth of a river), above-mentioned some through holes distribute along current divider bilateral symmetry, and from the center of current divider to current divider both sides, the size of through hole increases successively, above-mentioned setting restrained effectively on the current divider mouth of a river and discharges the uneven phenomenon of molten steel amount, be conducive to suppressing liquid level fluctuation of crystallizer, achieve the good result of use of native system.
(3) device of a kind of effective suppression liquid level fluctuation of crystallizer of the present invention, wherein the component of coat is 85%CaO, 1.8%MgO, 3.2%MnO, 0.5%Al
2o
3, 1.5%SiO
2, 0.05%FeO, 0.15%Fe
2o
3, 4%ZrO
2, 3.8%Cr
2o
3, this coat not only has high temperature resistant, erosion resisting, also has the effect of absorption inclusion content in melting steel; When using the device of effective suppression liquid level fluctuation of crystallizer of the present invention, its coat is with the process of steel contacts, effectively can remove the field trashes such as alundum (Al2O3), manganous silicate and the calcium aluminate in molten steel, realize the further removal to inclusion content in melting steel, to reach the smelting target of high purity steel.
(4) device of a kind of effective suppression liquid level fluctuation of crystallizer of the present invention, reasonable in design, low cost of manufacture, is convenient to promote the use of.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the device of a kind of effective suppression liquid level fluctuation of crystallizer of the present invention;
Fig. 2 is the left TV structure schematic diagram of the device of a kind of effective suppression liquid level fluctuation of crystallizer of the present invention;
Fig. 3 is the plan structure schematic diagram of the device of a kind of effective suppression liquid level fluctuation of crystallizer of the present invention;
Fig. 4 is the structural representation of the present invention when applying.
Number in the figure illustrates: 1, water trap; 2, flow-stopping plate; 3, head piece is gone out; 4, davit; 5, the current divider mouth of a river; 6, large davit; 7, current divider; 8, current divider side plate; 9, converging inlet; 10, submersed nozzle; 11, covering slag; 12, crystallizer wall; 13, jet.
Detailed description of the invention
For understanding content of the present invention further, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, the device of a kind of effective suppression liquid level fluctuation of crystallizer of the present embodiment, comprise conflux mechanism, diversion mechanism and bindiny mechanism, the jet 13 of submersed nozzle 10 side opening ejection first can be assembled by conflux mechanism, reduce its momentum, then the liquid stream that momentum reduces by diversion mechanism evenly discharges, and liquid level fluctuation of crystallizer is well suppressed.Bindiny mechanism is respectively used to connect conflux mechanism and diversion mechanism, diversion mechanism and the external world.
Conflux mechanism comprises water trap 1, flow-stopping plate 2, goes out head piece 3 and converging inlet 9, and water trap 1 is a cylinder, and this cylinder inside is provided with cylindrical cavity, and water trap 1 side is provided with coupled logical converging inlet 9, and converging inlet 9 upper edge tilts upward; Water trap 1 inside is provided with flow-stopping plate 2, and this flow-stopping plate 2 is fixed on the junction of water trap 1 and converging inlet 9 upper edge, and flow-stopping plate 2 tilts downwards; Water trap 1 top is provided with circular port, and this circular port is connected with the tube connector above it; Go out the rectangular block that head piece 3 is its central band manhole in, tube connector is connected with the head piece 3 that goes out above it.
Diversion mechanism comprises current divider 7, and current divider 7 is a cuboid, and current divider 7 top is provided with 6 through holes, and the through hole on current divider 7 top is called the current divider mouth of a river 5.Above-mentioned 6 through holes distribute along current divider 7 bilateral symmetry, and from the center of current divider 7 to current divider 7 both sides, the size of through hole increases successively, and (" size of through hole increases successively " herein refers to that the radial section of through hole is long-pending and increases successively, through hole is larger, namely the radial section of through hole is long-pending larger) it should be noted that, applicant finds through a large amount of field experiment, if the current divider mouth of a river 5 size on current divider 7 is the same, the incoming flow with certain kinetic energy impacts on current divider 7, the molten steel amount flowed out near the current divider mouth of a river 5 at current divider 7 center is greater than the molten steel amount that other current divider mouths of a river 5 are flowed out, the impact causing covering slag 11 to accept is uneven.The size at the current divider mouth of a river 5 is set to the closer to current divider 7 center less by applicant, restrained effectively on the current divider mouth of a river 5 and discharges the uneven phenomenon of molten steel amount.Current divider 7 bottom is provided with rectangular recess.
Bindiny mechanism comprises davit 4 and large davit 6, and four angles going out head piece 3 upper surface are connected with one end of 4 davits 4 respectively, and the other end of above-mentioned 4 davits 4 is connected with current divider 7 lower surface; Large davit 6 one end is connected with the central point of current divider 7 upper surface, and large davit 6 other end is connected with tundish bottom or outside support.
In the present embodiment, water trap 1 is cylinder, this cylinder inside is provided with cylindrical cavity, flow-stopping plate 2 is solid platy structure, go out the rectangular block that head piece 3 is its central band manhole in, davit 4 and large davit 6 are cylindrical structure, and current divider 7 is rectangular structure, current divider 7 top is provided with 6 through holes, above-mentioned 6 through holes are along the distribution of current divider 7 bilateral symmetry, and from the center of current divider 7 to current divider 7 both sides, the size of through hole increases successively.Current divider 7 bottom is provided with rectangular recess.Be the plate slab crystallizer of 400mm × 115mm for cross-sectional area, the concrete dimensional requirement of the device of effective suppression liquid level fluctuation of crystallizer of the present embodiment is as follows: the internal diameter of water trap 1 is 50mm, and external diameter is 60mm, and interior height is 40mm, and outer height is 60mm; Flow-stopping plate 2 is of a size of 44mm × 40mm × 5mm, and flow-stopping plate 2 tilts downwards, and itself and horizontal line angle are 16 °; Go out head piece 3 and be of a size of 77mm × 65mm × 10mm, the radius going out manhole on head piece 3 is 20mm; Davit 4 is highly 14.38mm, and section radius is 5mm; Large davit 6 section radius is 10mm, and length is 1000mm; Current divider 7 is of a size of 300mm × 75mm × 25mm, 6 through holes on current divider 7 top are called the current divider mouth of a river 5, the shape at the current divider mouth of a river 5 is the combination (as shown in Figure 3) of rectangle and two semicircles, and current divider 7 lower rectangular groove is of a size of 290mm × 65mm × 5mm; Downward inclination angle × 2 of positive pitch=submersed nozzle 10 side opening, converging inlet 9 upper edge, in the present embodiment, the downward inclination angle of submersed nozzle 10 side opening is 25 °, so converging inlet 9 upper edge positive pitch gets 50 °; In the present embodiment, casting speed gets 1.8m/min, in continuous casting steel billet is produced, belong to higher pulling rate.The device of effective suppression liquid level fluctuation of crystallizer of the present embodiment is made up of mild steel sections, surfaces externally and internally all brushing coats of mild steel sections.This coat is made up of the component of following mass percent: 85%CaO, 1.8%MgO, 3.2%MnO, 0.5%Al
2o
3, 1.5%SiO
2, 0.05%FeO, 0.15%Fe
2o
3, 4%ZrO
2, 3.8%Cr
2o
3.
The device of a kind of effective suppression liquid level fluctuation of crystallizer of the present embodiment, its preparation method is as follows:
Prepared by step one, mild steel parts:
According to the Structure Quasi of the device of effective suppression liquid level fluctuation of crystallizer of the present embodiment for mild steel steel plate, by coarse for its surface finish, weld according to above-mentioned each part dimension, make water trap 1, flow-stopping plate 2, go out head piece 3, current divider 7 and converging inlet 9; Preparing four length is again 14.38mm, section radius is the mild steel cylinder of 5mm and by coarse for its surface finish, make davit 4, be welded on out on head piece 3 by four davits 4, wherein the bottom surface distance of center circle of every root davit 4 goes out the long back gauge of head piece 3 upper surface is 5mm, is 7.31mm apart from minor face; Preparing a section radius is again 10mm, and length is that the mild steel cylinder of 1000mm makes large davit 6, by coarse for its surface finish and be welded on the central point of current divider 7 upper surface; The metal frame (mechanics framework) of this device completes.
Step 2, coat material prepare:
Take each component according to the component requirements of coat, this coat material is made up of the component of following mass percent: 85%CaO, 1.8%MgO, 3.2%MnO, 0.5%Al
2o
3, 1.5%SiO
2, 0.05%FeO, 0.15%Fe
2o
3, 4%ZrO
2, 3.8%Cr
2o
3, said components is mixed, adds water and make it to stir into pureed;
Step 3, coating operation:
The coat homogenize material of step 2 is applied in the outer surface of mild steel sections, coat thickness is 6mm, because mild steel sections inner surface not easily adds coat, so its coat thickness is not strict with, but it is outside exposed to ensure there is mild steel, and coat thickness reaches 6mm ~ 9mm;
Step 4, maintenance drying
By the device natural curing at normal temperatures 15 ~ 20 hours of effective suppression liquid level fluctuation of crystallizer of step 3, the device of the effective suppression liquid level fluctuation of crystallizer after natural curing is put into oven: baking temperature, at 80 ~ 100 DEG C, toasts 3 hours; Baking temperature rises to 150 ~ 200 DEG C, toasts 1.5 hours; Baking temperature rises to 200 ~ 250 DEG C, toasts 1 hour; Baking temperature rises to 300 ~ 350 DEG C, toasts 1 hour; Baking is cooled to 200 ~ 250 DEG C, toasts 1 hour; Again be cooled to 80 ~ 100 DEG C, toast 1 hour, nature of coming out of the stove after baking terminates cools.
Adopt the surfaces externally and internally being attached to mild steel sections that the coat prepared of said method can be stable, the device performance effectively suppressing liquid level fluctuation of crystallizer is stablized.Found by hydraulic model trial: when pulling rate is higher, submersed nozzle 10 side opening can eject the jet 13 of higher speed, and then impel liquid level fluctuation of crystallizer to aggravate, the device of effective suppression liquid level fluctuation of crystallizer of the present embodiment is connected with extraneous (tundish bottom or outside support) by large davit 6, thus make this device be fixed in crystallizer, the degree of depth of molten steel is entered by adjusting this device, make converging inlet 9 in this device can assemble the jet 13 (as shown in Figure 4) ejected by submersed nozzle 10 side opening to greatest extent, the cylindrical cavity of jet 13 in water trap 1 converges, its momentum reduces, moved up with molten steel by being mixed in water trap 1 of bringing into of jet 13, by going out head piece 3 and with less momentum impulse current shunt 7, final liquid stream is flowed out by 6 current divider mouths of a river 5 on current divider 7 top and is contacted with covering slag 11.Mold liquid level changes slow fluctuation into by big ups and downs in the process, and fluctuating range is less, can not cause the generation of slag phenomenon, and meanwhile, liquid level keeps less fluctuation to facilitate the uniform melt of covering slag 11.Flow-stopping plate 2 in the present embodiment in water trap 1 prevents liquid stream in water trap 1 to be flowed out by converging inlet 9, current divider side plate 8 is positioned at the surrounding (surrounding of current divider 7 lower rectangular groove is called current divider side plate 8) of current divider 7 lower rectangular groove, to the diffusion of crystallizer wall 12 when current divider side plate 8 effectively can stop liquid flow impact current divider 7.The device of effective suppression liquid level fluctuation of crystallizer of the present embodiment is due to the design of its structure, make this device can optimize flow field under high pulling rate in crystallizer, suppress the fluctuation of mold liquid level, the field trash simultaneously effectively stoping submersed nozzle 10 side opening jet 13 to be brought into enters molten steel deep in a large number, effectively remove in molten steel while suppression liquid level fluctuation of crystallizer and be mingled with, and then improve slab quality.In addition, what deserves to be explained is, the large davit 6 in the present invention is not limit for the size of its concrete size, and refers to the davit of main lifting current divider 7, and the large davit 6 in the present invention also can be called: main davit.In like manner, the davit 4 in the present invention refers to the connector connecting head piece 3 and current divider 7, and the davit 4 in the present invention also can be called: joint pin.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (5)
1. effectively suppress a device for liquid level fluctuation of crystallizer, it is characterized in that: comprise conflux mechanism, diversion mechanism and bindiny mechanism, wherein:
Described conflux mechanism comprises water trap (1), flow-stopping plate (2), goes out head piece (3) and converging inlet (9), described water trap (1) is a cylinder, this cylinder inside is provided with cylindrical cavity, water trap (1) side is provided with coupled logical converging inlet (9), and converging inlet (9) upper edge tilts upward; Described water trap (1) inside is provided with flow-stopping plate (2), this flow-stopping plate (2) is fixed on the junction of water trap (1) and converging inlet (9) upper edge, and flow-stopping plate (2) tilts downwards; Described water trap (1) top is provided with circular port, and this circular port is connected with the tube connector above it; Described goes out the rectangular block that head piece (3) is its central band through hole in, and described tube connector is connected with the head piece (3) that goes out above it;
Described diversion mechanism comprises current divider (7), and described current divider (7) is a cuboid, and current divider (7) top is provided with some through holes, and current divider (7) bottom is provided with rectangular recess; Some through holes on described current divider (7) top are along the distribution of current divider (7) bilateral symmetry, and from the center of current divider (7) to current divider (7) both sides, the size of through hole increases successively;
Described bindiny mechanism comprises davit (4) and large davit (6), described four angles going out head piece (3) upper surface are connected with one end of 4 davits (4) respectively, and the other end of above-mentioned 4 davits (4) is connected with current divider (7) lower surface; Described large davit (6) one end is connected with the central point of current divider (7) upper surface, and large davit (6) other end is connected with the external world;
Above-mentioned conflux mechanism, diversion mechanism and bindiny mechanism are made up of mild steel sections, and the surfaces externally and internally of described mild steel sections is equipped with coat.
2. the device of a kind of effective suppression liquid level fluctuation of crystallizer according to claim 1 and 2, is characterized in that: described downward inclination angle × 2 of positive pitch=submersed nozzle (10) side opening, converging inlet (9) upper edge.
3. the device of a kind of effective suppression liquid level fluctuation of crystallizer according to claim 1, is characterized in that: described flow-stopping plate (2) downwards inclination angle is 16 °.
4. the device of a kind of effective suppression liquid level fluctuation of crystallizer according to claim 1, is characterized in that: described large davit (6) is connected with tundish bottom or outside support.
5. the device of a kind of effective suppression liquid level fluctuation of crystallizer according to claim 1 and 2, it is characterized in that: described current divider (7) top is provided with 6 through holes, above-mentioned 6 through holes are symmetrical about large davit (6).
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| CN201610702169.0A CN106077543B (en) | 2015-05-12 | 2015-05-12 | A kind of manufacture method of liquid level fluctuation of crystallizer restraining device |
| CN201610702178.XA CN106180609B (en) | 2015-05-12 | 2015-05-12 | A kind of liquid level fluctuation of crystallizer restraining device |
| CN201510240749.8A CN104801685B (en) | 2015-05-12 | 2015-05-12 | A kind of device of effective suppression liquid level fluctuation of crystallizer |
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| CN201610702178.XA Division CN106180609B (en) | 2015-05-12 | 2015-05-12 | A kind of liquid level fluctuation of crystallizer restraining device |
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| CN114888270A (en) * | 2022-05-09 | 2022-08-12 | 湖南华菱涟源钢铁有限公司 | Slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method |
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| CN104624995B (en) * | 2015-02-27 | 2016-08-17 | 安徽工业大学 | The device of liquid level fluctuation of crystallizer is suppressed under a kind of high pulling rate |
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- 2015-05-12 CN CN201510240749.8A patent/CN104801685B/en active Active
- 2015-05-12 CN CN201610702178.XA patent/CN106180609B/en active Active
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| CN201136054Y (en) * | 2008-01-04 | 2008-10-22 | 唐山钢铁股份有限公司 | Submerged type pouring head for continuous casting jobbing sheet blank |
| WO2011036060A1 (en) * | 2009-09-23 | 2011-03-31 | Siemens Vai Metals Technologies Gmbh | Method and device for casting metal melt in a continuous casting machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104801685B (en) | 2017-03-01 |
| CN106180609A (en) | 2016-12-07 |
| CN106077543B (en) | 2018-04-10 |
| CN106180609B (en) | 2018-01-16 |
| CN106077543A (en) | 2016-11-09 |
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