CN110523965A - A kind of rectangle bloom five hole mouth of a river of side opening asymmetry immersion - Google Patents
A kind of rectangle bloom five hole mouth of a river of side opening asymmetry immersion Download PDFInfo
- Publication number
- CN110523965A CN110523965A CN201910938602.4A CN201910938602A CN110523965A CN 110523965 A CN110523965 A CN 110523965A CN 201910938602 A CN201910938602 A CN 201910938602A CN 110523965 A CN110523965 A CN 110523965A
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- Prior art keywords
- hole
- river
- immersion
- side opening
- asymmetry
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- 238000007654 immersion Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000017525 heat dissipation Effects 0.000 claims abstract description 6
- 210000001787 dendrite Anatomy 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 230000003628 erosive effect Effects 0.000 claims abstract description 4
- 230000000116 mitigating effect Effects 0.000 claims abstract description 4
- 238000009749 continuous casting Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 230000005499 meniscus Effects 0.000 abstract description 6
- 239000002893 slag Substances 0.000 abstract description 6
- 239000013078 crystal Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
Classifications
-
- 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
A kind of rectangle bloom five hole mouth of a river of side opening asymmetry immersion of the present invention can be reinforced the heat exchange of high-temperature molten steel and pre-hardening green shell by side opening jet stream, molten steel is promoted to cross heat dissipation.Side opening jet erosion solidification front interrupts dendrite and does, and broken nucleus is brought into inside crystallizer by molten steel flow, provides condition for equiax crystal forming core.By the asymmetry of side opening height, going out width surface side hole, intensity of flow is inconsistent, and then improves the uniformity of pre-hardening green shell.Stable crystalline device liquid fluctuating reduces the current difference at meniscus different location away from mitigating or prevent vortex slag at meniscus, to improve cc billet surface quality.The porous mouth of a river side opening difference in height that the present invention uses by adjusting rectangle bloom, uniformity, the stable meniscus flow regime, the generation for preventing slag phenomenon of suitably homogenous slab width face shell growth.By increasing bottom diameter, mitigates nozzle blocking, make to produce direct motion.
Description
Technical field:
The invention belongs to continuously casting technical fields, and in particular to a kind of rectangle bloom side opening asymmetry immersion five
The hole mouth of a river.
Background technique:
Current rectangle bloom continuous casting process causes jet impulse depth too deep, no using the common through type mouth of a river
It is removed conducive to the floating of field trash；Liquid level is excessively tranquil, is unfavorable for the fusing of covering slag；High-temperature molten steel and crystallizer percussion
It is weak, it was unfavorable for heat dissipation, and caused column crystal flourishing, slab quality is unstable etc., and rectangle bloom continuous casting process, common
The side opening symmetrical five hole mouth of a river causes width face curdled appearance inconsistent, and meniscus fluidised form difference is big, Yi Yinqi vortex slag；Bottom outlet
Aperture is small to easily lead to nozzle blocking, is unfavorable for slab quality and production direct motion.
Summary of the invention
Technical solution of the present invention discloses a kind of five hole mouth of a river of rectangle bloom side opening asymmetry immersion, existing to solve
There is any problem in the above-mentioned of technology and other potential problems.
In order to achieve the above object, technical solution of the present invention discloses a kind of rectangle bloom side opening asymmetry immersion
The five holes mouth of a river, the rectangle bloom are equipped with upper-side hole under with the lower end of the main body at the five hole mouth of a river of side opening asymmetry immersion
Side opening, and lower-side hole, against crystallizer leptoprosopy, upper-side hole is penetrated against the wide face of crystallizer by different height upper-side hole and lower-side hole
Stream reinforces the heat exchange of high-temperature molten steel and pre-hardening green shell, and molten steel is promoted to cross heat dissipation；The jet erosion solidification front generated simultaneously is beaten
Disconnected dendrite is dry, and broken nucleus is brought into inside crystallizer by molten steel flow；
Prevent nozzle blocking, mitigation continuous casting from opening and pouring splash by the bottom outlet shunting of bottom.
Further, the five hole mouth of a river of rectangle bloom side opening asymmetry immersion includes the main body of cylindrical type, cylinder
One end of the main body of type is equipped with inlet, and the other end is equipped with bottom outlet, is symmetrically arranged on 2 on the side wall of described bottom outlet one end
Side opening is symmetrically arranged with 2 lower-side holes positioned at 2 upper-side hole lower ends.
Further, the section of 2 upper-side holes and 2 upper-side holes is rectangle, and four angles of rectangle are fillet.
Further, the sectional area of 2 upper-side holes and 2 upper-side holes is equal.
According to the embodiment of the present disclosure, the section of the bottom outlet is circle, and the sectional area of the bottom outlet is 2 upper-side holes
With 0.5 times of the sum of the sectional area of 2 lower-side holes.
Further, the section of the inlet is circle.
Further, the sectional area of the inlet is 4 times of the bottom outlet sectional area.
Further, symmetrical 2 upper-side holes with and the horizontal center line height of symmetrical 2 lower-side holes differ 5-10mm.
Further, the material of the main body of cylindrical type is refractory material.
The invention has the benefit that due to the adoption of the above technical scheme, the present invention is by adjusting the use of rectangle bloom
Porous mouth of a river side opening difference in height, it is the uniformity of suitably homogenous slab width face shell growth, stable meniscus flow regime, anti-
The only generation of slag phenomenon.By increasing bottom diameter, mitigates nozzle blocking, make to produce direct motion.The collocation in several holes uses energy
It enough effectively improves slab Center Equiaxial Crystal rate, reduce casting billet surface inclusion content, so as to improve slab quality.
Detailed description of the invention:
Fig. 1 is a kind of structural schematic diagram at the five hole mouth of a river of rectangle bloom side opening asymmetry immersion of the present invention.
Fig. 2 is the specifically used structural schematic diagram in the five hole mouth of a river of side opening asymmetry immersion of the present invention.
Fig. 3 is the face the A-A cross sectional plan view of Fig. 2.
In figure:
1. main body, 2. inlet openings, 3. fluid holes, 4. runners, 5. liquid levels, 6. crystallizers, the wide face of 6-1. crystallizer, 6-2. knot
Brilliant device leptoprosopy.
Specific embodiment:
Below in conjunction with specific attached drawing the present invention is described in detail specific embodiment.It should be noted that in following embodiments
The combination of the technical characteristic or technical characteristic of description is not construed as isolated, they can be combined with each other to reaching
To superior technique effect.In the drawings of the following embodiments, the identical label that each attached drawing occurs represent identical feature or
Person's component, can be apply to different embodiments.
As shown in Figure 1, the embodiment of the present disclosure discloses a kind of five hole mouth of a river of rectangle bloom side opening asymmetry immersion,
The rectangle bloom is equipped with upper-side hole and lower-side hole with the lower end of the main body at the five hole mouth of a river of side opening asymmetry immersion, and under
Side opening is reinforced high against crystallizer leptoprosopy, upper-side hole against the wide face of crystallizer by different height upper-side hole and lower-side hole jet stream
The heat exchange of warm molten steel and pre-hardening green shell, promotes molten steel to cross heat dissipation；The jet erosion solidification front generated simultaneously interrupts dendrite and does,
Broken nucleus is brought into inside crystallizer by molten steel flow；
Prevent nozzle blocking, mitigation continuous casting from opening and pouring splash by the bottom outlet shunting of bottom.
The five hole mouth of a river of rectangle bloom side opening asymmetry immersion includes the main body of cylindrical type, the main body of cylindrical type
One end be equipped with inlet, the other end be equipped with bottom outlet, close to described bottom outlet one end side wall on be symmetrically arranged with 2 upper-side holes, position
Be symmetrically arranged with 2 lower-side holes in 2 upper-side hole lower ends, symmetrical 2 upper-side holes with and symmetrical 2 lower-side holes level
Centerline height differs 5-10mm.
The section of 2 upper-side holes and 2 upper-side holes is rectangle, and four angles of rectangle are fillet.
The sectional area of 2 upper-side holes and 2 upper-side holes is equal.
The section of the bottom outlet is circle, and the sectional area of the bottom outlet is the section of 2 upper-side holes and 2 lower-side holes
0.5 times of the sum of product, as shown in Figure 3.The section of the inlet is circle.The sectional area of the inlet cuts for the bottom outlet
4 times of area.
The material of the main body of cylindrical type is refractory material.
Embodiment:
As shown in Fig. 2, the five hole mouth of a river of side opening asymmetry immersion is being mounted on crystallizer 6 using side opening dissymmetrical structure
On center line, there is certain immersion depth apart from liquid level 5.Lower-side hole 3-2 is installed in crystallizer leptoprosopy 6-2, and upper-side hole 3-1 is opposite
Crystallizer wide face 6-1 installation, such mountings design facilitate the uniform of width face solidified shell, conducive to molten steel cross heat dissipation with
Dry broken of solidification front dendrite, can also stable meniscus flow regime, prevent slag phenomenon from occurring.Bottom outlet 3-3 uses macropore
Diameter design can reduce nozzle blocking, is conducive to production direct motion and slab quality improves.
Although several embodiments of the present invention are had been presented for herein, it will be appreciated by those of skill in the art that In
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment is only exemplary, no
It should be using the embodiments herein as the restriction of interest field of the present invention.
Claims (9)
1. a kind of rectangle bloom five hole mouth of a river of side opening asymmetry immersion, which is characterized in that rectangle bloom side
The lower end of the main body at the five hole mouth of a river of hole asymmetry immersion is equipped with upper-side hole and lower-side hole, and lower-side hole is narrow against crystallizer
Face, upper-side hole reinforce high-temperature molten steel and pre-hardening green shell against the wide face of crystallizer, by different height upper-side hole and lower-side hole jet stream
Heat exchange, promote molten steel cross heat dissipation；The jet erosion solidification front generated simultaneously interrupts dendrite and does, and broken nucleus is by molten steel
Flowing is brought into inside crystallizer；
Prevent nozzle blocking, mitigation continuous casting from opening and pouring splash by the bottom outlet shunting of bottom.
2. the rectangle bloom according to claim 1 five hole mouth of a river of side opening asymmetry immersion, which is characterized in that described
The five hole mouth of a river of rectangle bloom side opening asymmetry immersion includes the main body of cylindrical type, the top of the main body of cylindrical type be equipped with into
Liquid mouth, bottom are equipped with bottom outlet, are symmetrically arranged with 2 upper-side holes on the side wall of described bottom outlet one end, are located at 2 upper-side holes
Lower section is symmetrically arranged with 2 lower-side holes.
3. the rectangle bloom according to claim 2 five hole mouth of a river of side opening asymmetry immersion, which is characterized in that 2
The section of the upper-side hole and 2 lower-side holes is rectangle, and four angles of rectangle are fillet.
4. the rectangle bloom according to claim 2 five hole mouth of a river of side opening asymmetry immersion, which is characterized in that 2
The sectional area of the upper-side hole and 2 lower-side holes is equal.
5. the rectangle bloom according to claim 2 five hole mouth of a river of side opening asymmetry immersion, which is characterized in that described
The section of bottom outlet is circle, and the sectional area of the bottom outlet is the 0.5 of the sum of sectional area of 2 upper-side holes and 2 lower-side holes
Times.
6. the rectangle bloom according to claim 2 five hole mouth of a river of side opening asymmetry immersion, which is characterized in that described
The section of inlet is circle.
7. the rectangle bloom according to claim 2 five hole mouth of a river of side opening asymmetry immersion, which is characterized in that described
The sectional area of inlet is 4 times of the bottom outlet sectional area.
8. the rectangle bloom according to claim 2 five hole mouth of a river of side opening asymmetry immersion, which is characterized in that symmetrical
2 upper-side holes with and the horizontal center line height of symmetrical 2 lower-side holes differ 5-10mm.
9. the rectangle bloom according to claim 2 five hole mouth of a river of side opening asymmetry immersion, which is characterized in that cylinder
The material of the main body of type is refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938602.4A CN110523965A (en) | 2019-09-30 | 2019-09-30 | A kind of rectangle bloom five hole mouth of a river of side opening asymmetry immersion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938602.4A CN110523965A (en) | 2019-09-30 | 2019-09-30 | A kind of rectangle bloom five hole mouth of a river of side opening asymmetry immersion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110523965A true CN110523965A (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910938602.4A Pending CN110523965A (en) | 2019-09-30 | 2019-09-30 | A kind of rectangle bloom five hole mouth of a river of side opening asymmetry immersion |
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| Country | Link |
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| CN (1) | CN110523965A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003080350A (en) * | 2001-09-07 | 2003-03-18 | Sanyo Special Steel Co Ltd | Method for continuously casting high cleanliness steel |
| CN101890495A (en) * | 2010-06-04 | 2010-11-24 | 北京科技大学 | Pinwheel-shaped and tree root-shaped quarter section tangential water gap for continuous casting |
| JP2012183568A (en) * | 2011-03-07 | 2012-09-27 | Sumitomo Metal Ind Ltd | Immersion nozzle for continuous casting and continuous casting method |
| CN202701328U (en) * | 2012-08-23 | 2013-01-30 | 北京科技大学 | Gating system for pouring wide and thick slab by two water gaps |
| CN210848317U (en) * | 2019-09-30 | 2020-06-26 | 北京科技大学 | Side-hole asymmetric submerged five-hole water gap for rectangular large square billet |
-
2019
- 2019-09-30 CN CN201910938602.4A patent/CN110523965A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003080350A (en) * | 2001-09-07 | 2003-03-18 | Sanyo Special Steel Co Ltd | Method for continuously casting high cleanliness steel |
| CN101890495A (en) * | 2010-06-04 | 2010-11-24 | 北京科技大学 | Pinwheel-shaped and tree root-shaped quarter section tangential water gap for continuous casting |
| JP2012183568A (en) * | 2011-03-07 | 2012-09-27 | Sumitomo Metal Ind Ltd | Immersion nozzle for continuous casting and continuous casting method |
| CN202701328U (en) * | 2012-08-23 | 2013-01-30 | 北京科技大学 | Gating system for pouring wide and thick slab by two water gaps |
| CN210848317U (en) * | 2019-09-30 | 2020-06-26 | 北京科技大学 | Side-hole asymmetric submerged five-hole water gap for rectangular large square billet |
Non-Patent Citations (1)
| Title |
|---|
| 时彦林: "连铸工培训教程", vol. 1, 31 July 2013, 冶金工业出版社, pages: 47 * |
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