CN106392053A - Immersion type rotational-flow water port for steelmaking continuous casting - Google Patents
Immersion type rotational-flow water port for steelmaking continuous casting Download PDFInfo
- Publication number
- CN106392053A CN106392053A CN201610971328.7A CN201610971328A CN106392053A CN 106392053 A CN106392053 A CN 106392053A CN 201610971328 A CN201610971328 A CN 201610971328A CN 106392053 A CN106392053 A CN 106392053A
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- China
- Prior art keywords
- water port
- mouth
- river
- water
- continuous casting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses an immersion type rotational-flow water port for steelmaking continuous casting. The immersion type rotational-flow water port for steelmaking continuous casting comprises a water port body, and the interior of the water port body is cylindrical. A cylindrical inner cavity is formed in the water port body. The open end of the cylindrical inner cavity of the water port body is a water port inlet, and the closed end of the cylindrical inner cavity of the water port body is a water port bottom. At least three water port outlets are formed in the water port bottom and arranged on the water port wall of the water port body, and the lower ends of the water port outlets penetrate through the water port bottom. The inner side of each water port outlet communicates with the interior of the water port and deviates from the circle center of the water port bottom. The water port outlets are evenly distributed in the periphery of the water port wall. By adoption of the immersion type rotational-flow water port for steelmaking continuous casting, the molten steel fluidity and the temperature distribution state in a crystallizer are changed, and the casting blank quality is improved.
Description
Technical field
The invention belongs to field of steel metallurgy, more particularly, to a kind of steel-making continuous casting immersion eddy flow downspout.
Background technology
Continuous casting steel machine is the metal mold cavity (crystallizer) that high-temperature molten steel is continuously cast to one or more Forced water cooling
Interior；After solidification forming, then through cooling twice, form the process of definite shape (specification) strand.The quality of slab quality, steel
Flowing in crystallizer for the liquid and temperature distribution state have conclusive impact, and continuous casting immersion outlet structure is then to control
The key that molten steel flows with temperature distribution state in crystallizer.
Big cross section round billet continuous casting machine, is mainly used in the production of wheel, heavily loaded axletree and large ring, slab quality is required
Very high.
During realizing the present invention, inventor finds that prior art at least has problems with：This section current
Round billet continuous casting machine is still using traditional straight tube mouth of a river；Because the jet impulse at the straight tube mouth of a river is deeper, field trash is led to be difficult to float
Remove；Simultaneously because stream stock upwards is not enough, crystallizer molten steel surface under-activity, covering slag lack of fusion, strand may be led to
Quality Down.Further, since the flow field characteristic at the straight tube mouth of a river, in round mold, molten steel cannot fully mix, and may lead to cast
Base center segregation is larger, and column crystal is more flourishing.
Content of the invention
The technical problem to be solved is to provide a kind of Mold that changes to flow and temperature distribution state,
The steel-making continuous casting immersion eddy flow downspout of lifting slab quality.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is：A kind of steel-making continuous casting immersion eddy flow
The mouth of a river, has：
Mouth of a river body, described mouth of a river body inner cylindrical, the described mouth of a river is originally provided with cylindrical cavity in vivo；
The openend of the cylindrical cavity of described mouth of a river body is nozzle inlet, the closing of the cylindrical cavity of mouth of a river body
Hold as mouth of a river bottom；
Described mouth of a river bottom is additionally provided with water-gap outlets, and described water-gap outlets are arranged on the mouth of a river wall of described mouth of a river body,
Described mouth of a river bottom is run through in described water-gap outlets lower end；Inside described water-gap outlets with connect in the described mouth of a river and deviate mouth of a river bottom
The center of circle in portion；
Described water-gap outlets at least three, are uniformly distributed in described mouth of a river wall periphery.
Described water-gap outlets are tangent with mouth of a river inner chamber wall.
Described water-gap outlets have three, and the angle between two neighboring water-gap outlets is 120 °.
Described nozzle inlet connects tundish, and water-gap outlets connect crystallizer, and described mouth of a river wall and mouth of a river bottom are
Refractory material.
One of technique scheme technical scheme has the advantage that or beneficial effect, and the direct current in crystallizer changes
For eddy flow, column trichite exhibition can be suppressed, reduce center segregation, promote inclusion floating.Change Mold flowing and
Temperature distribution state, lifts slab quality.The impact depth of molten steel stream stock can significantly be reduced, be conducive to inclusion floating in molten steel
Remove, can make to move on high-temperature region in crystallizer simultaneously, promote covering slag fusing to be formed and stablize liquid slag layer.Therefore apply new immersion
Formula eddy flow downspout, it is possible to reduce the mass loss that round billet causes because field trash is exceeded, is simultaneously also beneficial to the direct motion of round billet continuous casting.
Brief description
The structural representation of the steel-making continuous casting immersion eddy flow downspout for providing in the embodiment of the present invention for the Fig. 1；
The mark of above-mentioned in figure is：1st, mouth of a river body, 2, mouth of a river wall, 3, nozzle inlet, 4, mouth of a river bottom, 5, the mouth of a river
Outlet.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to Fig. 1, a kind of steel-making continuous casting immersion eddy flow downspout, have：
Mouth of a river body, mouth of a river body inner cylindrical, the mouth of a river is originally provided with cylindrical cavity in vivo；
The openend of the cylindrical cavity of mouth of a river body is nozzle inlet, and the blind end of the cylindrical cavity of mouth of a river body is
Mouth of a river bottom；
Mouth of a river bottom is additionally provided with water-gap outlets, and water-gap outlets are arranged on the mouth of a river wall of mouth of a river body, water-gap outlets lower end
Run through mouth of a river bottom；With the center of circle connecting and deviateing mouth of a river bottom in the mouth of a river inside water-gap outlets；
Water-gap outlets at least three, are uniformly distributed in mouth of a river wall periphery.
Water-gap outlets are tangent with mouth of a river inner chamber wall.
Water-gap outlets have three, and the angle between two neighboring water-gap outlets is 120 °.
Nozzle inlet connects tundish, and water-gap outlets connect crystallizer, and mouth of a river wall and mouth of a river bottom are refractory material.
By literature survey and Field Research, find that current Mold flowing and temperature distribution state are impact circles
The key factor of base quality；Presently used straight barrel type submersed nozzle, leads to molten steel stream stock impact depth excessive, on field trash
Floating removal is difficult；Also result in that mold liquid level temperature is low, be unfavorable for that covering slag fusing forms stable liquid slag layer.For send out
Existing problem, using the technological means of numerical simulation, devises a kind of new immersion eddy flow downspout；New immersion cyclone water
Mouthful devise three perforates in mouth of a river wall lower area, between perforate, angle is 120 degree, each perforate all with mouth of a river inner chamber wall
Tangent, mouth of a river bottom is then in the downward insertion of three osseotomy site.
Nozzle inlet connects tundish, and water-gap outlets connect crystallizer, and mouth of a river wall and mouth of a river bottom are refractory material；
The mouth of a river generally cylindrical shape, internal is cylindrical hole, insertion nozzle inlet and outlet.Feature is that water-gap outlets run through water simultaneously
Mouth side and bottom surface.
After above-mentioned structure, the direct current in crystallizer is changed to eddy flow, can suppress column trichite exhibition, reduces center
Segregation, promotes inclusion floating.Change Mold flowing and temperature distribution state, lift slab quality.Can significantly subtract
The impact depth of little molten steel stream stock, is conducive to inclusion floating in molten steel to remove, can make to move on high-temperature region in crystallizer simultaneously, promote
Enter covering slag fusing formation and stablize liquid slag layer.Therefore apply new immersion eddy flow downspout, it is possible to reduce round billet surpasses because of field trash
Mark the mass loss causing, be simultaneously also beneficial to the direct motion of round billet continuous casting.
Above in conjunction with accompanying drawing, the present invention is exemplarily described it is clear that the present invention implements is not subject to aforesaid way
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to other occasions, all within protection scope of the present invention.
Claims (4)
1. a kind of steel-making continuous casting immersion eddy flow downspout is it is characterised in that have：
Mouth of a river body, described mouth of a river body inner cylindrical, the described mouth of a river is originally provided with cylindrical cavity in vivo；
The openend of the cylindrical cavity of described mouth of a river body is nozzle inlet, and the blind end of the cylindrical cavity of mouth of a river body is
Mouth of a river bottom；
Described mouth of a river bottom is additionally provided with water-gap outlets, and described water-gap outlets are arranged on the mouth of a river wall of described mouth of a river body, described
Described mouth of a river bottom is run through in water-gap outlets lower end；Inside described water-gap outlets with connect in the described mouth of a river and deviate mouth of a river bottom
The center of circle；
Described water-gap outlets at least three, are uniformly distributed in described mouth of a river wall periphery.
2. steel-making continuous casting immersion eddy flow downspout as claimed in claim 1 is it is characterised in that in described water-gap outlets and the mouth of a river
Cavity wall face is tangent.
3. steel-making continuous casting immersion eddy flow downspout as claimed in claim 2 is it is characterised in that described water-gap outlets have three,
Angle between two neighboring water-gap outlets is 120 °.
4. steel-making continuous casting immersion eddy flow downspout as claimed in claim 3 is it is characterised in that the connection of described nozzle inlet is middle
Bag, water-gap outlets connect crystallizer, and described mouth of a river wall and mouth of a river bottom are refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610971328.7A CN106392053A (en) | 2016-10-28 | 2016-10-28 | Immersion type rotational-flow water port for steelmaking continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610971328.7A CN106392053A (en) | 2016-10-28 | 2016-10-28 | Immersion type rotational-flow water port for steelmaking continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106392053A true CN106392053A (en) | 2017-02-15 |
Family
ID=58014994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610971328.7A Pending CN106392053A (en) | 2016-10-28 | 2016-10-28 | Immersion type rotational-flow water port for steelmaking continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106392053A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0264809A1 (en) * | 1986-10-15 | 1988-04-27 | British Steel plc | Refractory pouring tube |
| JPH11239852A (en) * | 1998-02-24 | 1999-09-07 | Sumitomo Metal Ind Ltd | Immersion nozzle for continuous casting and continuous casting method |
| CN2626648Y (en) * | 2003-03-19 | 2004-07-21 | 青岛双鹰耐火材料有限公司 | Submerged nozzle possessing rotary agitation function |
| EP2279816A1 (en) * | 2008-03-27 | 2011-02-02 | Krosaki Harima Corporation | Immersion nozzle for continuous casting |
| CN102218528A (en) * | 2011-06-03 | 2011-10-19 | 马鞍山钢铁股份有限公司 | Tundish water gap |
| CN104884192A (en) * | 2013-02-25 | 2015-09-02 | 里弗雷克特里知识产权两合公司 | Submerged entry nozzle |
-
2016
- 2016-10-28 CN CN201610971328.7A patent/CN106392053A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0264809A1 (en) * | 1986-10-15 | 1988-04-27 | British Steel plc | Refractory pouring tube |
| JPH11239852A (en) * | 1998-02-24 | 1999-09-07 | Sumitomo Metal Ind Ltd | Immersion nozzle for continuous casting and continuous casting method |
| CN2626648Y (en) * | 2003-03-19 | 2004-07-21 | 青岛双鹰耐火材料有限公司 | Submerged nozzle possessing rotary agitation function |
| EP2279816A1 (en) * | 2008-03-27 | 2011-02-02 | Krosaki Harima Corporation | Immersion nozzle for continuous casting |
| CN102218528A (en) * | 2011-06-03 | 2011-10-19 | 马鞍山钢铁股份有限公司 | Tundish water gap |
| CN104884192A (en) * | 2013-02-25 | 2015-09-02 | 里弗雷克特里知识产权两合公司 | Submerged entry nozzle |
Non-Patent Citations (1)
| Title |
|---|
| 吴耀光 等: "大圆坯连铸用新型旋流水口的数值模拟", 《钢铁钒钛》 * |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 243003 Department of intellectual property right of Hunan West Road No. 8 technology center, Ma'anshan City, Anhui Province Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 Hunan Anhui West Road, No. 8 technology center, Intellectual Property Department Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 243003 8 Jiuhua Road, Yushan, Ma'anshan, Anhui Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 intellectual property department, technology center, No. 8 Hunan West Road, Yushan, Ma'anshan, Anhui Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |
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| RJ01 | Rejection of invention patent application after publication |