CN203140710U - Current stabilizer of steelmaking continuous-casting tundish - Google Patents
Current stabilizer of steelmaking continuous-casting tundish Download PDFInfo
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- CN203140710U CN203140710U CN 201320000168 CN201320000168U CN203140710U CN 203140710 U CN203140710 U CN 203140710U CN 201320000168 CN201320000168 CN 201320000168 CN 201320000168 U CN201320000168 U CN 201320000168U CN 203140710 U CN203140710 U CN 203140710U
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Abstract
The utility model provides a current stabilizer of a steelmaking continuous-casting tundish, belongs to the technical field of continuous-casting tundish equipment, and aims to weaken impact effect of molten steel, reduce flow rate of the molten steel and prolong service life of the current stabilizer. The technical scheme includes that the current stabilizer comprises a steel overflow pool, a slag retaining dam and an impact cup; a plurality of annular protrusions are arranged at the bottom of the impact cup, the cross sections of the annular protrusions are semicircular, the heights of the annular protrusions are the same and the distances among the annular protrusions are equal; and a round protrusion is arranged at the circle center of the bottom of the impact cup, the annular protrusions are sequentially arrayed around the round protrusion at the center of the bottom of the impact cup, the radius of the round protrusion is a quarter of that of the bottom of the impact cup, and the height of the round protrusion is 1.25-1.30 times that of each annular protrusion. By the current stabilizer, the impact effect to the slag retaining dam is weakened, impact force of the molten steel is lowered, the flow rate of the molten steel is reduced, obvious improvements on initial speeds of molten steel flow distribution, floating of occluded foreign substances and overflow of the molten steel out of a steel pool are made, and service life of the stabilizer is prolonged from original 25 furnaces to 43 furnaces.
Description
Technical field
The utility model relates to a kind of steel-making continuous casting tundish flow straightener, belongs to steel-making continuous casting tundish equipment technical field.
Background technology
Flow straightener is the core component of conticaster tundish, and the height of its stability directly has influence on the service life of middle bag, influences the operating rate of conticaster.The flow straightener of present domestic use mainly by impact cup, dam, the structures such as steel pond, ash pit, shock plate of overflowing form, its advantage be simple in structure, intensity is big, control simply, becomes the product that most of producer selects for use.But find that in use also there is significant disadvantages in the flow straightener of this structure.At first, the requirement of flow straightener impact cup is very high, requires it to have very strong shock proof ability, and the life-span of impacting cup has directly determined the service life of tundish; Secondly, molten steel is big to the scouring intensity of flow straightener, occurs the slag dam phenomenon of caving in midway easily, and the molten steel degree of purity can't guarantee; Have, molten steel goes out flow straightener again, and the initial velocity height influences the stable of Zhong Bao flow field.
Existing flow straightener in use, flow straightener is subjected to washing away strongly of high-temperature molten steel beam, the normal local cracking of flow straightener that takes place, whole defeated and dispersed, make at the bottom of the tundish impact zone bag rubescent, the bottom eating thrown, the flow straightener life-span reduces, and causes tundish also to reduce service life, becomes to improve the bottleneck that continuous casting even waters the stove number, therefore improve flow straightener, the raising tundish flow straightener life-span is imperative.
The utility model content
Technical problem to be solved in the utility model provides a kind of percussion that can weaken molten steel, reduces molten steel flow speed, improves the steel-making continuous casting tundish flow straightener in the service life of flow straightener.
The technical scheme that solves the problems of the technologies described above is:
A kind of steel-making continuous casting tundish flow straightener, comprise overflow steel pond, dam, impact cup in its formation, its improvements are, impact the cup bottom a plurality of annular projections are arranged, the cross section of a plurality of annular projections is semicircle, the height of annular projection is identical, equidistant between the annular projection, impacting cup bottom circle centre position is circular protrusions, a plurality of annular projections are arranged in proper order around impacting cup bottom centre circular protrusions, the radius of central circular projection is for impacting 1/4 of cup bottom radius, and the height of central circular projection is 1.25～1.30 times of annular projection height.
Above-mentioned steel-making continuous casting tundish flow straightener, the bottom surface in described excessive steel pond is the parallel bump array of a plurality of semicircles, and the height of parallel projection and spacing equate that parallel projection is vertical with the longitudinal axis in excessive steel pond, and the height of parallel projection is 30mm-50mm.
Above-mentioned steel-making continuous casting tundish flow straightener, the height of described dam is 100mm-125mm.
The beneficial effects of the utility model:
The utility model and the contrast of existing flow straightener, the dam height reduces, and has reduced the molten steel amount in the excessive steel pond, weakens the souring to dam; Impacting concentric circles projection in the cup has the impulsive force of resisting big Baogang water, molten steel is disperseed and reduces the molten steel impulsive force layer by layer, weakens the effect of molten steel flow speed; The parallel projection of bottom, excessive steel pond can reduce molten steel flow speed, weakens molten steel to the percussion of dam.The utility model has tangible improvement to molten steel flow field, inclusion floating, molten steel go out the to overflow initial velocity in steel pond, and bring up to 43 stoves by 25 original stoves the service life of flow straightener.
Description of drawings
Fig. 1 is this practical structure vertical view;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is this practical flow field figure.
Mark is as follows among the figure: the steel pond 1 of overflowing, dam 2, impact cup 3, slag-drip opening 4, big Baogang stream 5, current stabilization flow field 6, parallel protruding 7, annular projection 8, circular protrusions 9.
The specific embodiment
Comprise the steel pond 1 of overflowing, dam 2 in the formation of the present utility model, impact cup 3.
Show among the figure, impact cup 3 bottoms and be divided into a plurality of equidistant concentric circles, bottom surface between the neighboring concentric circle upwards forms semicircle ring-type projection 8, the height of annular projection 8 is identical, impacting cup 3 bottom circle centre positions is circular protrusions 9, a plurality of annular projections 8 are arranged around impacting cup 3 bottom centre's circular protrusions 9 orders, and the radius of central circular projection 9 is for impacting 1/4 of cup 3 bottom radius, and the height of central circular projection 9 is 1.25～1.30 times of annular projection 8 height.The height of the annular protrusion 8 of an embodiment of the present utility model is 50mm.
Central circular projection 9 main impulsive forces of resisting big Baogang water spread out molten steel, and the annular projection 8 of periphery is resisted the molten steel impulsive force layer by layer, weakens molten steel flow speed.
Show among the figure that the height of dam is 100mm-125mm, compared with prior art, it is original 1/3 that the height of dam 2 is reduced to, and improved the thickness of dam 2, to reduce the molten steel amount in the steel pond 1 of overflowing, weakens the souring to dam 2.
Show among the figure that the bottom surface in the steel pond 1 of overflowing is that a plurality of semicircles parallel protruding 7 are arranged, parallel protruding 7 height and spacing equate that parallel protruding 7 is vertical with the longitudinal axis in excessive steel pond 1, and parallel protruding 7 height is 30mm-50mm.Parallel protruding 7 the height of an embodiment of the present utility model is 50mm.
Molten steel enters into when overflowing the steel district, by parallel protruding 7 reduction molten steel flow speeds, weakens molten steel to the percussion of dam 2.
Show among the figure that continuous casting is unwrapped greatly and watered, molten steel directly pours from big bag long nozzle in the impact cup 3 of flow straightener, and molten steel is got to when impacting in the cup 3, keeps out molten steel by the central circular projection 9 of center and impacts for the first time.The molten steel separated into two parts, first is in that to impact cup inner, flows by the direction in flow field among Fig. 3, and another part directly returns in the steel pond 1 of overflowing and washes away dam 2 along flow field among Fig. 3.Molten steel forms rotational flow field in excessive steel pond 1, parallel protruding 7 stream field molten steel further slow down, and the flow field in the steel pond 1 of overflowing is stable, is conducive to the inclusion floating in the molten steel, weakens dam 2 sourings.Molten steel reaches height of dam and flows into tundish.
Claims (3)
1. steel-making continuous casting tundish flow straightener, comprise the steel pond (1) of overflowing in its formation, dam (2), impact cup (3), it is characterized in that: impacting cup (3) bottom has a plurality of annular projections (8), the cross section of a plurality of annular projections (8) is semicircle, the height of annular projection (8) is identical, equidistant between the annular projection (8), impacting cup (3) bottom circle centre position is circular protrusions (9), a plurality of annular projections (8) are arranged around impacting cup (3) bottom centre circular protrusions (9) order, the radius of central circular projection (9) is for impacting 1/4 of cup (3) bottom radius, and the height of central circular projection (9) is 1.25～1.30 times of annular projection (8) height.
2. steel-making continuous casting tundish flow straightener according to claim 1, it is characterized in that: the bottom surface in described excessive steel pond (1) is that the parallel projection of a plurality of semicircles (7) is arranged, the height of parallel projection (7) and spacing equate, parallel projection (7) is vertical with the longitudinal axis in excessive steel pond (1), and the height of parallel projection (7) is 30mm-50mm.
3. steel-making continuous casting tundish flow straightener according to claim 1 and 2, it is characterized in that: the height of described dam (2) is 100mm-125mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320000168 CN203140710U (en) | 2013-01-02 | 2013-01-02 | Current stabilizer of steelmaking continuous-casting tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320000168 CN203140710U (en) | 2013-01-02 | 2013-01-02 | Current stabilizer of steelmaking continuous-casting tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203140710U true CN203140710U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320000168 Expired - Fee Related CN203140710U (en) | 2013-01-02 | 2013-01-02 | Current stabilizer of steelmaking continuous-casting tundish |
Country Status (1)
| Country | Link |
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| CN (1) | CN203140710U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479995A (en) * | 2019-08-27 | 2019-11-22 | 北京利尔高温材料股份有限公司 | A kind of inside and outside composition current stabilizer of continuous casting triangle tundish |
| CN111069579A (en) * | 2019-12-31 | 2020-04-28 | 浙江红鹰铭德高温材料科技有限公司 | Long-life tundish integral impact barrel, formula and manufacturing process thereof |
| CN112207268A (en) * | 2020-10-21 | 2021-01-12 | 武汉钢铁有限公司 | Circular vortex-resisting device for bottom of steel ladle |
-
2013
- 2013-01-02 CN CN 201320000168 patent/CN203140710U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479995A (en) * | 2019-08-27 | 2019-11-22 | 北京利尔高温材料股份有限公司 | A kind of inside and outside composition current stabilizer of continuous casting triangle tundish |
| CN111069579A (en) * | 2019-12-31 | 2020-04-28 | 浙江红鹰铭德高温材料科技有限公司 | Long-life tundish integral impact barrel, formula and manufacturing process thereof |
| CN111069579B (en) * | 2019-12-31 | 2021-10-15 | 浙江红鹰铭德高温材料科技有限公司 | Long-life tundish integral impact barrel, formula and manufacturing process thereof |
| CN112207268A (en) * | 2020-10-21 | 2021-01-12 | 武汉钢铁有限公司 | Circular vortex-resisting device for bottom of steel ladle |
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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: 20130821 Termination date: 20220102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |