CN204842961U - Get rid of immersion nozzle of inclusion - Google Patents
Get rid of immersion nozzle of inclusion Download PDFInfo
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- CN204842961U CN204842961U CN201520643132.6U CN201520643132U CN204842961U CN 204842961 U CN204842961 U CN 204842961U CN 201520643132 U CN201520643132 U CN 201520643132U CN 204842961 U CN204842961 U CN 204842961U
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- cage plate
- vertical section
- tubular conduit
- horizontal segment
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Abstract
The utility model discloses a get rid of immersion nozzle of inclusion belongs to the continuous casting field. The utility model discloses an immersion nozzle includes vertical section and horizontal segment, vertical section and horizontal segment set up perpendicularly, are provided with hollow inner chamber in the vertical section, be equipped with tubular conduit in the horizontal segment, hollow inner chamber and tubular conduit intercommunication, tubular conduit is enclosed by the passageway outer wall, long and narrow type opening and outside intercommunication that tubular conduit passes through passageway outer wall upper surface, and this mouth of a river still includes the lagging, the lagging link firmly the periphery in vertical section, and the lagging is outer along extending all around to vertical section. The lagging bottom surface is recess form or concave arc form to scribble the calcium oxide coating in the lagging bottom surface. The utility model discloses guarantee horizontal temperature of crystallizer and composition homogeneity, can slow down and exhaust molten steel kinetic energy that secondary oxidation is avoided to the disturbance of liquid level to the reduction molten steel, promote that gas -solid inclusion come -up is effectively got rid of, improved the casting blank quality.
Description
Technical field
The utility model relates to continuous casting technical field, more particularly, relates to a kind of submersed nozzle of removal of inclusions.
Background technology
Along with the development of national economy, people are more and more higher to the intensity of steel products, toughness and the requirement in service life.Particularly the tin plate of car panel, packaging for foodstuff and steel cable bridge etc. improve requiring the service life of steel, also more and more stricter to the existing forms of steel inclusion, size and quantity control overflow, entire oxygen content in the steel content reduces to several ppm by tens ppm, tens ppm in past, and the intensity of steel, toughness, service life and security performance are just met the demand of people.
In Steel Production Flow Chart, the removal of field trash mainly relies on external refining, as ladle argon-blown stirring, electromagnetic agitation, LF stove, RH stove etc.To in tundish process, being all generally the process of removal of inclusions at large bag subsequently, therefore by arranging the height on barricade gear dam and position and perforate on barricade gear dam, drawing suitable flow field, can effective removal of inclusions.Molten steel from tundish to crystallizer after, in molten steel, field trash is removed in a crystallizer, is to reduce the final tache of inclusion content.In existing link, general by optimizing submersed nozzle inclination angle, side opening and mesopore area ratio and bottom shape etc., promotion inclusion floating, and capped covering slag Adsorption.
Usually, make submersed nozzle can play its metallurgy action preferably, immersion type water nozzle structure shape that just must be reasonable in design, thus obtain the reasonable crystallizer Flow and heat flux being adapted to current pouring condition, generally speaking, rational crystallizer Flow and heat flux comprises following three aspects: the liquid level fluctuation of crystallizer that (1) is suitable and surface velocity, its target be can prevent that liquid level is exposed, the unfavorable factor such as covering slag turnup and meniscus destruction, the normal melt of covering slag can be ensured again simultaneously; (2) the transversely uniform temperature of crystallizer and component distributing, its objective is the segregation of lobe and the uneven components generation preventing the excessive generation of horizontal thermal stress; (3) crystallizer longitudinally upper rational thermograde; In order to promote that base shell solidifies preferably, ensureing the thermal center (-tre) as far as possible should improving molten steel under above-mentioned two conditions, make in crystallizer, to form the low reasonable temperature gradient of upper temp high temperature of lower, so both can improve Inner Quality of Billet as far as possible, and can prevent again crystallizer from exporting base shell and cross thin and bleed-out.But still there is easy slag, oxidizable deficiency in prior art.
Through retrieval, China Patent No.: ZL201220339229.4, authorized announcement date: on May 1st, 2013, this application case discloses a kind of slab continuous casting submerged nozzle, be made up of vertical section and horizontal segment, sidewall above bottom is provided with a contralateral exposure, two side holes is connected with hollow lumen, the wall of described side opening surrounding extends to horizontal direction, form horizontal segment, the wall of horizontal segment surrounds the tubular conduit identical with side opening shape, tubular conduit one end is connected with side opening, the other end forms semiclosed, the upper end wall of tubular conduit is provided with the thin-and-long opening identical with horizontal section length.This patent formula can change the thermograde of firm liquid, but is difficult to crystallization control liquid fluctuating and surface velocity, requires further improvement.
Utility model content
1. the utility model technical problem that will solve
The purpose of this utility model is to overcome easy slag, oxidizable deficiency in prior art, provide a kind of submersed nozzle of removal of inclusions, the technical solution of the utility model, by arrange cage plate can hinder molten steel directly on gush, prevent liquid fluctuating, there is the effect reducing slag and prevent molten steel secondary oxidation, field trash in molten steel can be made to be efficiently removed simultaneously, improve slab quality.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
The submersed nozzle of a kind of removal of inclusions of the present utility model, comprise vertical section and horizontal segment, described vertical section is vertical with horizontal segment to be arranged, hollow lumen is provided with in vertical section, tubular conduit is provided with in described horizontal segment, described hollow lumen is communicated with tubular conduit, described tubular conduit is surrounded by channel outer wall, tubular conduit passes through sleeve configuration opening and the ft connection of channel outer wall upper surface, this mouth of a river also comprises cage plate, described cage plate is connected in the periphery of vertical section, and cage plate outer extends to vertical section surrounding.
Further improve as the utility model, the cage plate bottom surface of described cage plate is groove-like or concave arc shape.
Further improve as the utility model, the upper surface of described cage plate is inclined plane, and is positioned at eminence near the side of vertical section.
Further improve as the utility model, the outside of described cage plate is the cage plate sidewall vertically arranged, and cage plate sidewall and cage plate bottom surface are provided with calcium oxide coating.
Further improve as the utility model, described cage plate and horizontal segment distribute axisymmetricly about hollow lumen center line.
Further improve as the utility model, the junction of vertical section and horizontal segment is provided with reinforcing inclined-plane.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with prior art, has following beneficial effect:
(1) submersed nozzle of a kind of removal of inclusions of the present utility model, the vertical section at the mouth of a river and horizontal segment combined, molten steel flow pass all upwards water conservancy diversion, makes high-temperature molten steel upper reaches, thermal center (-tre) is moved, ensure longitudinally rational thermograde, be conducive to strand normal growth, molten steel flow pass is comparatively large simultaneously, and wide is disperseed more, molten steel can be made to diffuse on whole crystallizer cross section, be conducive to gas-solid inclusion floating;
(2) submersed nozzle of a kind of removal of inclusions of the present utility model, in the vertical section at the mouth of a river, cage plate is set, the extension of this cage plate can prevent the liquid surface fluctuation caused because molten steel gushes, the groove-like of cage plate bottom surface or concave arc shape structure can make molten steel on gush motion and be obstructed, consume molten steel kinetic energy, have better effects to reduction slag; The upper surface of cage plate is inclined plane, avoids the formation of eddy current, can increase the contact area with covering slag simultaneously, prevent molten steel by secondary oxidation;
(3) submersed nozzle of a kind of removal of inclusions of the present utility model, is provided with calcium oxide coating at cage plate sidewall and cage plate bottom surface, and the gas in the adsorbable molten steel of this coating, solid field trash, improve slab quality, extend the service life of crystallizer.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the submersed nozzle of a kind of removal of inclusions of the present utility model;
Fig. 2 is the side-looking structural representation of submersed nozzle of the present utility model;
Fig. 3 is the sectional structure schematic diagram of A-A in Fig. 1;
Fig. 4 is the sectional structure schematic diagram of B-B in Fig. 1;
Fig. 5 is the sectional structure schematic diagram of C-C in Fig. 1;
Fig. 6 is the using state schematic diagram of submersed nozzle of the present utility model.
Label declaration in schematic diagram: 1, vertical section; 101, upright side walls; 102, hollow lumen; 2, cage plate; 201, cage plate drift angle; 202, cage plate sidewall; 203, cage plate bottom surface; 204, cage plate base angle; 3, horizontal segment; 301, channel outer wall; 302, bottom surface, the mouth of a river; 303, tubular conduit; 304, semiclosed; 305, side opening; 306, sleeve configuration opening; 307, inclined-plane is reinforced.
Detailed description of the invention
For understanding content of the present utility model further, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
Composition graphs 1, Fig. 2 and Fig. 3, the submersed nozzle of a kind of removal of inclusions of the present embodiment, this mouth of a river comprises vertical section 1 and horizontal segment 3, and vertical section 1 is vertical with horizontal segment 3 to be arranged, be provided with hollow lumen 102 in vertical section 1, namely upright side walls 101 is around surrounding hollow lumen 102.Be provided with tubular conduit 303 in horizontal segment 3 in the present embodiment, described hollow lumen 102 is communicated with tubular conduit 303.Tubular conduit 303 is surrounded by channel outer wall 301, and as shown in Figure 5, tubular conduit 303 passes through sleeve configuration opening 306 and the ft connection of channel outer wall 301 upper surface, and the bottom at tubular conduit 303 two ends is semiclosed face 304, and top is side opening 305.After molten steel is entered by the hollow lumen 102 of the vertical section 1 of water filling port, molten steel is flowed out by sleeve configuration opening 306 and side opening 305 by tubular conduit 303, because tubular conduit 303 adds fluid area, molten steel flow velocity reduces, high-temperature molten steel upper reaches, thermal center (-tre) is moved, ensures longitudinally reasonably thermograde, be conducive to the normal growth of strand; Molten steel wider territory dispersion, can make molten steel diffuse on whole crystallizer cross section, contributes to inclusion floating simultaneously.
In addition, in order to improve the structural strength at the mouth of a river, to be provided with the junction of horizontal segment 3 in vertical section 1 and to reinforce inclined-plane 307, this reinforcing inclined-plane 307 can prevent the generation of right angle phenomenon of rupture, extends the service life at the mouth of a river.
See Fig. 1, Fig. 4 and Fig. 6, the mouth of a river of the present embodiment also comprises cage plate 2, and this cage plate 2 is connected in the periphery of vertical section 1, and vertically section 1 outer extends to vertical section 1 surrounding.Cage plate 2 and horizontal segment 3 distribute axisymmetricly about hollow lumen 102 center line, and this cage plate 2 is surrounded by cage plate upper surface, cage plate sidewall 202 and cage plate bottom surface 203, and wherein, cage plate bottom surface 203 is groove-like or concave arc shape, the preferred concave arc shape of the present embodiment.This concave arc shape structural design has the excessive effect of circular arc.Because shove on the region molten steel of upright side walls 101, speed is comparatively large, therefore cage plate bottom surface 203 is comparatively large near the side cup depth of upright side walls 101, both can slow down molten steel flow velocity, can avoid the formation of again eddy current and disturbance liquid level.The upper surface of set cage plate 2 is inclined plane, and is positioned at eminence near the side of vertical section 1, avoids the formation of eddy current, and can change the contact area with covering slag, molten steel is isolated from the outside, and prevents molten steel by secondary oxidation simultaneously.
It should be noted that, cage plate sidewall 202 and cage plate bottom surface 203 are provided with calcium oxide coating, and coating layer thickness is 1 ~ 5mm.The field trashes such as the aluminium oxide in molten steel, silica are easy to be adsorbed by basic anhydride such as calcium oxide, form the duplex impurity of calcium oxide and aluminium oxide or calcium oxide and silica.The calcium oxide coating of cage plate bottom surface 203 improves the adsorption capacity of the mouth of a river to aluminium oxide and silica, the field trash in molten steel is effectively removed, and calcium oxide coating itself does not consume.
Referring to Fig. 6, during use, the ratio of the distance outside mouth of a river center line to crystallizer narrow section sidewall distance and mouth of a river center line to cage plate is 1.25 ~ 4, cage plate 2 is 80-180mm with the height of upright side walls 101 contact-segment, cage plate 2 is cage plate drift angle 201 and cage plate base angle 204 with the contact end portion of the upright side walls 101 of vertical section 1, then the spacing at cage plate drift angle 201 and cage plate base angle 204 is 80-180mm.Cage plate base angle 204 and bottom surface, the mouth of a river 302 vertically distance are 80-120mm, and cage plate sidewall 202 is 50-90mm with the height of covering slag contact surface, meets the injection demand of molten steel.Specific to the present embodiment, preferred cage plate 2 is 90mm with the height of upright side walls 101 contact-segment, and cage plate base angle 204 and bottom surface, the mouth of a river 302 vertically distance are 80mm, and cage plate sidewall 202 is 50mm with the height of covering slag contact surface.
Embodiment 2
The submersed nozzle of a kind of removal of inclusions of the present embodiment, its basic structure is identical with embodiment 1, and its difference is: cage plate bottom surface 203 set in the present embodiment is groove-like.Set cage plate 2 is 180mm with the height of upright side walls 101 contact-segment, and cage plate base angle 204 and bottom surface, the mouth of a river 302 vertically distance are 120mm, and cage plate sidewall 202 is 85mm with the height of covering slag contact surface.
The type of flow of the utility model molten steel significantly can reduce the flowing kinetic energy of molten steel, reduce the impact of molten steel, ensure molten steel being uniformly distributed of temperature and composition on cross section, impel on molten steel thermal center (-tre) and move, be conducive to inclusion floating and be efficiently removed, for the reasonable growth of nascent solidified shell and the raising of slab quality provide help.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model 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 utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (6)
1. the submersed nozzle of a removal of inclusions, comprise vertical section (1) and horizontal segment (3), described vertical section (1) is vertical with horizontal segment (3) to be arranged, hollow lumen (102) is provided with in vertical section (1), tubular conduit (303) is provided with in described horizontal segment (3), described hollow lumen (102) is communicated with tubular conduit (303), described tubular conduit (303) is surrounded by channel outer wall (301), tubular conduit (303) is by the sleeve configuration opening (306) of channel outer wall (301) upper surface and ft connection, it is characterized in that: also comprise cage plate (2), described cage plate (2) is connected in the periphery of vertical section (1), and cage plate (2) outer extends to vertical section (1) surrounding.
2. the submersed nozzle of a kind of removal of inclusions according to claim 1, is characterized in that: the cage plate bottom surface (203) of described cage plate (2) is groove-like or concave arc shape.
3. the submersed nozzle of a kind of removal of inclusions according to claim 1, is characterized in that: the upper surface of described cage plate (2) is inclined plane, and is positioned at eminence near the side of vertical section (1).
4. the submersed nozzle of a kind of removal of inclusions according to Claims 2 or 3, it is characterized in that: the outside of described cage plate (2) is the cage plate sidewall (202) vertically arranged, cage plate sidewall (202) and cage plate bottom surface (203) are provided with calcium oxide coating.
5. the submersed nozzle of a kind of removal of inclusions according to claim 4, is characterized in that: described cage plate (2) and horizontal segment (3) distribute axisymmetricly about hollow lumen (102) center line.
6. the submersed nozzle of a kind of removal of inclusions according to claim 5, is characterized in that: be provided with in the junction of vertical section (1) and horizontal segment (3) and reinforce inclined-plane (307).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520643132.6U CN204842961U (en) | 2015-08-21 | 2015-08-21 | Get rid of immersion nozzle of inclusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520643132.6U CN204842961U (en) | 2015-08-21 | 2015-08-21 | Get rid of immersion nozzle of inclusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204842961U true CN204842961U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520643132.6U Expired - Fee Related CN204842961U (en) | 2015-08-21 | 2015-08-21 | Get rid of immersion nozzle of inclusion |
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| CN (1) | CN204842961U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465436A (en) * | 2018-11-12 | 2019-03-15 | 莱芜钢铁集团银山型钢有限公司 | A kind of ultra-thin Hot Metal in Beam Blank central point casting submersed nozzle |
| CN110461500A (en) * | 2017-03-31 | 2019-11-15 | 日本碍子株式会社 | The manufacturing method of ozzle, casting device and moulding |
| CN110842186A (en) * | 2019-09-30 | 2020-02-28 | 鞍钢股份有限公司 | Method and device for preventing eddy slag rolling of slab continuous casting crystallizer |
| CN110997183A (en) * | 2017-08-08 | 2020-04-10 | 株式会社Posco | Nozzle with a nozzle body |
| CN114799150A (en) * | 2022-04-24 | 2022-07-29 | 湖南华菱涟源钢铁有限公司 | Wave suppression method for continuous casting of square billets |
-
2015
- 2015-08-21 CN CN201520643132.6U patent/CN204842961U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110461500A (en) * | 2017-03-31 | 2019-11-15 | 日本碍子株式会社 | The manufacturing method of ozzle, casting device and moulding |
| US11351600B2 (en) * | 2017-03-31 | 2022-06-07 | Ngk Insulators, Ltd. | Nozzle, casting apparatus, and cast product manufacturing method |
| CN110997183A (en) * | 2017-08-08 | 2020-04-10 | 株式会社Posco | Nozzle with a nozzle body |
| CN109465436A (en) * | 2018-11-12 | 2019-03-15 | 莱芜钢铁集团银山型钢有限公司 | A kind of ultra-thin Hot Metal in Beam Blank central point casting submersed nozzle |
| CN110842186A (en) * | 2019-09-30 | 2020-02-28 | 鞍钢股份有限公司 | Method and device for preventing eddy slag rolling of slab continuous casting crystallizer |
| CN110842186B (en) * | 2019-09-30 | 2022-02-18 | 鞍钢股份有限公司 | Method and device for preventing eddy slag rolling of slab continuous casting crystallizer |
| CN114799150A (en) * | 2022-04-24 | 2022-07-29 | 湖南华菱涟源钢铁有限公司 | Wave suppression method for continuous casting of square billets |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160821 |
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| CF01 | Termination of patent right due to non-payment of annual fee |