CN201082465Y - Immersion water gap for continuous casting - Google Patents
Immersion water gap for continuous casting Download PDFInfo
- Publication number
- CN201082465Y CN201082465Y CNU2007200741377U CN200720074137U CN201082465Y CN 201082465 Y CN201082465 Y CN 201082465Y CN U2007200741377 U CNU2007200741377 U CN U2007200741377U CN 200720074137 U CN200720074137 U CN 200720074137U CN 201082465 Y CN201082465 Y CN 201082465Y
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- water gap
- immersion water
- continuously casting
- blocking means
- utility
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Abstract
The utility model relates to a submerged water slot for continuous casting. The utility model comprises a vertical pipe with closed lower end and two water drainage pipes arranged symmetrically at the lower part of the vertical pipe, the vertical pipe at the lower part of each water drainage pipe adopts a buffering segment, the submerged water slot also comprises a screw blocking device which rotates in an anticlockwise way around center, the screw blocking device is installed in the buffering segment of the vertical pipe, and the rotating center of the screw blocking device is matched with the central line of the vertical pipe together. A screw shaped device is arranged at the bottom part of the water slot, and an anticlockwise screw shaped groove is manufactured on the inner wall at the outlet of the water slot. The utility model can effectively prevent entrainment phenomenon from occurring during the casting process of the steel ball, simultaneously prevents the steel liquid at the outlet from occurring deflection to influence the stability of the whole molten pool, and can prevent air bubble concentration from being generated at the bottom part of the water slot, to cause the steel liquid at the outlet to occur periodic fluctuation. The adoption of the utility model can ensure the casting quality, greatly reduces the wastage of the steel liquid, and improves the quality of the casting blank.
Description
Technical field
The utility model relates to a kind of metallurgical equipment parts, relates to the submersed nozzle that uses in a kind of twin-roll thin strip continuous casting process more specifically.
Background technology
In the continuous casting steel machine operation, the effect of submersed nozzle is that metallic solution is incorporated into the metallic crystal device from tundish.Submersed nozzle is steel mill's continuous casting requisite parts of equipment, and it is except having the steel of guiding stream, and main is control and improves the flow regime of steel stream in crystallizer, and the interior liquid level of maintenance crystallizer is stable.Be conventional continous casting sprue 1 as Figure 1-3, it is to utilize refractory material to make, and inner wall smooth is smooth.In the process of casting, molten steel flows downward from tundish, because the effect of earth rotation, clockwise deflection can take place molten steel, is subjected to stopping from the perforate 2 of both sides, bottom of bottom, the mouth of a river at last to flow out, and is distributed in then between crystallizer or the crystallization roller.Stopping still of bottom, the mouth of a river can not effectively change the trend that molten steel turns clockwise, the final molten steel that two STHs 2 flow out from the mouth of a river can deflect, when the tundish molten steel liquid level reduces, the meeting in zone, the mouth of a river produces the molten steel whirlpool, whirlpool can be involved in the slag on molten steel top in the molten steel, can have a strong impact on the quality of casting steel billet.These phenomenons can be seen in actual tests.The buffer area of a segment distance as molten steel generally can be reserved in the bottom at the mouth of a river simultaneously, and promptly breeze way 3 is in order to prevent that molten steel from puncturing the mouth of a river.But cause the gathering of air easily on a large scale because of changing of Way out in this zone, when herein air accumulation to a certain degree exitting to the outside, this venting action is periodic, also can cause the cyclic fluctuation of outlet molten steel, thereby cause liquid fluctuating to increase, the inner molten steel in whole molten bath flows asymmetric, thereby causes temperature distributing disproportionation even, has influence on slab quality.
On December 30th, 1998, the Chinese patent ZL97214834.5 of Granted publication disclosed a kind of submersed nozzle that is used to pour into a mould continuous-casting sheet billet, comprise mouth of a river body, the section that it is characterized in that mouth of a river body is flat-shaped, the upper end is provided with the inlet that section is round shape, be connected for rounding off between mouth of a river body and the inlet, be provided with the branching block to convex in body lower end, the mouth of a river, the branching block both sides are provided with the symmetry outlet.This submersed nozzle has advantages such as no adhesion, the covering slag fusing is even, slab quality is good.But they are different down in shape, inconvenience processing, the corresponding bigger increase of manufacturing cost.
The utility model content
The cyclic fluctuation of the outlet molten steel that causes for the periodic venting of the deflection of molten steel in the immersion water gap for continuously casting that reduces prior art and delivery port place, cause liquid fluctuating to increase, the inner molten steel in whole molten bath flows asymmetric, temperature distributing disproportionation is even, have influence on the problem of slab quality, the new submersed nozzle that uses in a kind of twin-roll thin strip continuous casting process is provided.This submersed nozzle increases the resistance of the clockwise deflection of molten steel in the mouth of a river by increasing by parts, improved the deflection of molten steel greatly, slowed down molten steel flow speed, prevent air accumulation, thereby avoided delivery port periodically to exit, guarantee that molten steel is mobile more even in the bath, thereby improve the quality of strand.
A kind of immersion water gap for continuously casting of the present utility model adopts following technical scheme:
A kind of immersion water gap for continuously casting, comprise the vertical tube of lower end sealing and two outlet pipes of this vertical tube bottom symmetric arrangement, the vertical tube of outlet pipe below is a breeze way, it is characterized in that, this submersed nozzle also comprises the helical resistive blocking means that is rotated counterclockwise around the center, this helical resistive blocking means is fixedly mounted in the breeze way of described vertical tube, the central lines of its pivot and vertical tube.
Described helical resistive blocking means comprises mobile jib and a plurality of blade, and described mobile jib is a conical rod, and blade is uniform and rotation in the counterclockwise direction along the periphery on mobile jib top, and the lateral surface of all blades is positioned on the same taper seat.
Described helical resistive blocking means upper end is the plane, and this area of plane is 1/5～1/3 of a blade bottom area.
Described helical resistive blocking means is the pinnacle.
The blade of described helical resistive blocking means is 3-6.
The height of described helical resistive blocking means is positioned near the center line of mouth of a river delivery port for its upper surface, back is installed
The water exit end inwall of above-mentioned outlet pipe is processed with counterclockwise helical groove.
Above-mentioned groove cross sectional shape is U-shaped or semicircle.
The recess width of above-mentioned helical groove and the degree of depth are at 5-10mm, and pitch is at 10-30mm.
In bottom, the mouth of a river spirality device is set, and is shaped on counterclockwise helical groove at mouth of a river outlet inwall.The utility model can effectively prevent to entrainment in the molten steel casting process, prevents to export molten steel the stable of the whole molten bath of influence that deflect simultaneously, and can prevent to produce bubble coalescence in bottom, the mouth of a river, and cause exporting the fluctuation of molten steel generating period.Adopt the utility model can guarantee the quality of casting, reduce the molten steel loss greatly, improve slab quality.
Description of drawings
Fig. 1 is the schematic diagram of the immersion water gap for continuously casting of prior art;
Fig. 2 is the schematic diagram of the immersion water gap for continuously casting of second kind of prior art;
Fig. 3 is the schematic diagram of the immersion water gap for continuously casting of the third prior art;
Fig. 4 is the schematic diagram of the helical resistive blocking means of immersion water gap for continuously casting of the present utility model;
Fig. 5 is the vertical view of immersion water gap for continuously casting of the present utility model;
Fig. 6 is the vertical profile schematic diagram of the main body of immersion water gap for continuously casting of the present utility model;
Fig. 7 is the vertical profile schematic diagram of main body of immersion water gap for continuously casting with Fig. 6 of another kind of helical groove;
Fig. 8 is the vertical profile schematic diagram of the main body of immersion water gap for continuously casting of the present utility model;
Fig. 9 is the vertical profile schematic diagram of main body of immersion water gap for continuously casting with Fig. 8 of another kind of helical groove;
Figure 10 is the vertical profile schematic diagram of immersion water gap for continuously casting of the present utility model;
The specific embodiment
Below in conjunction with the drawings and specific embodiments a kind of immersion water gap for continuously casting of the present utility model is further described.
As Fig. 5 and shown in Figure 10, immersion water gap for continuously casting of the present utility model is with respect to the improvements of the submersed nozzle of prior art, and the one, at the breeze way of original submersed nozzle one helical resistive blocking means 5 is installed; The 2nd, the counterclockwise helical groove 6 of processing in the outlet section at the mouth of a river.
Shown in Fig. 4,5 and 10, helical resistive blocking means 5 is tree-shaped, and mobile jib is a cone, is evenly distributed with 6 blades on the taper seat on mobile jib top, and blade shroud rotates in the counterclockwise direction around trunk, and the side outer rim of blade is on a taper seat.
As shown in Figure 4, helical resistive blocking means 5 also can be flat-head shape, and the area of its top platform is about 1/5～1/3 of blade bottom area.
Helical resistive blocking means 5 is made with common (anti-washing away) refractory material by steel-making, can bear the above high temperature of 1700 degree.
As shown in Figure 6, be the main body of the submersed nozzle of similar Fig. 2, the delivery port section inwall of this main body is processed with the U-shaped helical groove.
Main body shown in Figure 7 is that the U-shaped helical groove with Fig. 6 becomes semicircle spiral groove.
As shown in Figure 8, be the main body of the submersed nozzle of similar Fig. 3, the delivery port section inwall of this main body is processed with the U-shaped helical groove.
Main body shown in Figure 9 is that the U-shaped helical groove with Fig. 8 becomes semicircle spiral groove.
As Fig. 5 and shown in Figure 10, helical resistive blocking means 5 is installed in the breeze way 3 of lower body part, and the above top of the height of this helical resistive blocking means 5 is positioned on the center line of discharge of the mouth of a river, the pinnacle can be higher slightly, but be no more than the upper end of outlet.Helical resistive blocking means 5 is placed in the breeze way of lower body part, needs to make in advance, and utilizes when making the mouth of a river with the same refractory material in the mouth of a river and be fixed on bottom, the mouth of a river, thereby form an integral body.
The helical resistive blocking means can be set to 3～6 blades, and the curvature of distortion can change.The top of helical resistive blocking means 5 can be the point also can be arranged to platform-like.The area of top platform accounts for 1/5～1/3 of bottom area.
The counterclockwise helical groove of the outlet section inwall at the mouth of a river, the shape of groove can be U-shaped or semicircle, and the width of groove and the degree of depth are within 5～10mm scope, and pitch is at 10～30mm.
Centripetal force owing to the earth when molten steel enters the mouth of a river by tundish deflects, and flow downward, run into the stopping and pulverize of counterclockwise blade of screw in the outlet bottom, not only can carry out mixing once more and slow down the circulation phenomenon molten steel, be subjected to the counterclockwise spiral fluted effect of outlet section during again through outlet again, slow down the circulation phenomenon once more, and prolonged the stroke of molten steel in inside, the mouth of a river, reduce to export the impact of molten steel to crystallizer or crystallization roller, weaken the fluctuation of molten bath internal freedom liquid level, can effectively suppress impact depth like this, reduce impact that liquid level is caused, and effective mixing molten steel, slab quality improved.
, but should be understood that under the situation that does not break away from relevant protection domain defined by the claims that those skilled in the art can make change and/or revise according to embodiment of the present utility model describing the present invention property and nonrestrictive description.
Claims (10)
1. immersion water gap for continuously casting, comprise the vertical tube of lower end sealing and two outlet pipes of this vertical tube bottom symmetric arrangement, the vertical tube of outlet pipe below is a breeze way, it is characterized in that, this submersed nozzle also comprises the helical resistive blocking means that is rotated counterclockwise around the center, this helical resistive blocking means is fixedly mounted in the breeze way of described vertical tube, the central lines of its pivot and vertical tube.
2. immersion water gap for continuously casting according to claim 1, it is characterized in that, described helical resistive blocking means comprises mobile jib and a plurality of blade, described mobile jib is a conical rod, blade is uniform and rotation in the counterclockwise direction along the periphery on mobile jib top, and the lateral surface of all blades is positioned on the same taper seat.
3. immersion water gap for continuously casting according to claim 2 is characterized in that, described helical resistive blocking means upper end is the plane, and this area of plane is 1/5～1/3 of a blade bottom area.
4. immersion water gap for continuously casting according to claim 2 is characterized in that, described helical resistive blocking means is the pinnacle.
5. according to claim 2,3 or 4 described immersion water gap for continuously casting, it is characterized in that the blade of described helical resistive blocking means is 3-6.
6. according to claim 2,3 or 4 described immersion water gap for continuously casting, it is characterized in that the height of described helical resistive blocking means is positioned near the center line of mouth of a river delivery port for its upper surface, back is installed.
7. immersion water gap for continuously casting according to claim 5 is characterized in that, the height of described helical resistive blocking means is positioned near the center line of mouth of a river delivery port for its upper surface, back is installed.
8. according to claim 1,2 or 3 described immersion water gap for continuously casting, it is characterized in that the water exit end inwall of above-mentioned outlet pipe is processed with counterclockwise helical groove.
9. immersion water gap for continuously casting according to claim 8 is characterized in that, above-mentioned counterclockwise groove cross sectional shape is U-shaped or semicircle.
10. immersion water gap for continuously casting according to claim 9 is characterized in that the recess width of above-mentioned counterclockwise helical groove and the degree of depth are at 5-10mm, and pitch is at 10-30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200741377U CN201082465Y (en) | 2007-08-28 | 2007-08-28 | Immersion water gap for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200741377U CN201082465Y (en) | 2007-08-28 | 2007-08-28 | Immersion water gap for continuous casting |
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| Publication Number | Publication Date |
|---|---|
| CN201082465Y true CN201082465Y (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200741377U Expired - Fee Related CN201082465Y (en) | 2007-08-28 | 2007-08-28 | Immersion water gap for continuous casting |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966566A (en) * | 2010-10-19 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Rotary outlet type submerged nozzle for continuous casting |
| CN102764865A (en) * | 2012-06-26 | 2012-11-07 | 中冶南方工程技术有限公司 | Submersed nozzle for high-casting-speed continuous casting crystallizer |
| CN102764867A (en) * | 2012-06-18 | 2012-11-07 | 中冶南方工程技术有限公司 | Straight-through submerged nozzle with stirring effect |
| CN102794445A (en) * | 2012-07-13 | 2012-11-28 | 中冶南方工程技术有限公司 | Slab continuous casting submersed nozzle |
| CN103894596A (en) * | 2014-03-21 | 2014-07-02 | 上海大学 | Slab submersed nozzle controlling flowing of metal fluid |
| CN110315061A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | A kind of mouth of a river that can prevent pipeline and discharge hole bottom from adhering to |
-
2007
- 2007-08-28 CN CNU2007200741377U patent/CN201082465Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966566A (en) * | 2010-10-19 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Rotary outlet type submerged nozzle for continuous casting |
| CN102764867A (en) * | 2012-06-18 | 2012-11-07 | 中冶南方工程技术有限公司 | Straight-through submerged nozzle with stirring effect |
| CN102764867B (en) * | 2012-06-18 | 2014-11-26 | 中冶南方工程技术有限公司 | Straight-through submerged nozzle with stirring effect |
| CN102764865A (en) * | 2012-06-26 | 2012-11-07 | 中冶南方工程技术有限公司 | Submersed nozzle for high-casting-speed continuous casting crystallizer |
| CN102764865B (en) * | 2012-06-26 | 2014-11-05 | 中冶南方工程技术有限公司 | Submersed nozzle for high-casting-speed continuous casting crystallizer |
| CN102794445A (en) * | 2012-07-13 | 2012-11-28 | 中冶南方工程技术有限公司 | Slab continuous casting submersed nozzle |
| CN102794445B (en) * | 2012-07-13 | 2014-12-17 | 中冶南方工程技术有限公司 | Slab continuous casting submersed nozzle |
| CN103894596A (en) * | 2014-03-21 | 2014-07-02 | 上海大学 | Slab submersed nozzle controlling flowing of metal fluid |
| CN110315061A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | A kind of mouth of a river that can prevent pipeline and discharge hole bottom from adhering to |
| CN110315061B (en) * | 2018-03-30 | 2021-10-19 | 宝山钢铁股份有限公司 | Can prevent mouth of a river of pipeline and spit hole bottom adhesion |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20160828 |