CN101947643B - Weir flow-control device for tundish - Google Patents
Weir flow-control device for tundish Download PDFInfo
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- CN101947643B CN101947643B CN2010102964003A CN201010296400A CN101947643B CN 101947643 B CN101947643 B CN 101947643B CN 2010102964003 A CN2010102964003 A CN 2010102964003A CN 201010296400 A CN201010296400 A CN 201010296400A CN 101947643 B CN101947643 B CN 101947643B
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- weir
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- slag
- tundish
- pushing
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Abstract
The invention relates to the relevant arrangement of a metallurgy process of rectangular tundsh, in particular to a weir flow-control device for tundish. The tundish comprises a slag stopping weir arranged on the front part, a slag stopping front dam arranged on the rear part of the slag stopping weir and a slag stopping rear dam arranged on the rear part of the slag stopping front dam, wherein the slag stopping weir is in a shape of a hexahedron, of which the upper and the lower edges of the left lateral surface are in a positive camber shape and the cross section is in a trapezoidal shape; and the slag stopping front dam is in a shape of a heptahedron, of which the upper and the lower edges of the upper bottom surface are in a lower camber shape and the cross section is in a pentagonal shape; and the slag stopping rear dam is in a shape of a cuboid. In the weir flow-control device, the topography of the conventional extensive weir in a straight and square shape is discarded, and the camber weir with characteristic close to that of a tundish flow field is arranged scientifically according to different flow rates of steel liquid in the tundish so as to stabilize the flow rate of steel liquid in a ladle turbulence area, form a stable ascending flow field, improve the upward floating condition of impurities and improve the quality of molten steel.
Description
Technical field
The present invention relates to the relevant setting of rectangle tundish metallurgy technology, weir, a kind of specifically tundish dam flow control device.
Background technology
At present, from the requirement for assurance steel quality and promotion inclusion floating, the tundish inner chamber has generally adopted weir, dam flow control device in the tundish of iron and steel technological process continuous casting link.The tundish that is provided with Ba Yan mainly contains following advantage: (1) tundish inner chamber reasonably is provided with the weir, dam can optimize molten steel flow field, is formed with the upwelling that is beneficial to inclusion floating, improves the cleanliness factor of molten steel; (2) weir, dam is set and can reduces the tundish dead space volume, what be equivalent to increase tundish effectively utilizes volume; (3) can suppress the short-circuit flow of tundish bottom effectively, because the formation of short-circuit flow makes the field trash in this part molten steel in time to float.But because the Ba Yan that in middle bag, uses at present all is Nogata shapes, the mode that changes the Zhong Bao flow field is extensive, and the bag inwall washes away seriously in tending to cause, the flow field optimizes the improper existence that causes vortex, the bag age of bag during serious meeting reduces, deterioration steel quality.
Summary of the invention
Technical problem to be solved by this invention is: have shortcoming to above prior art, propose weir, a kind of tundish dam flow control device, can form stable rising flow field, improve the condition of inclusion floating, improve steel quality.
The technical scheme that the present invention solves above technical problem is:
Weir, tundish dam flow control device, comprise put fore slag weir, be arranged on the pushing off the slag counter-dam at slag weir rear portion and be arranged on the pushing off the slag at pushing off the slag counter-dam rear portion after the dam; The bottom on the left surface of being shaped as of slag weir all is that the cross section of outer arcuate is trapezoidal hexahedron; The bottom on the upper bottom surface of being shaped as of pushing off the slag counter-dam all is that the cross section of arc lower is pentagonal heptahedron; The dam is shaped as cuboid after the pushing off the slag.
Like this, because big bag beam district leans on the steel flow thigh of near part the strongest; The slag weir left surface is arranged to outer arcuate; Can let and decayed as much as possible, make that the molten steel flow speed that passes through slag weir is even, reduce washing away bag wall and slag weir near the steel flow thigh of bag wall; Pushing off the slag counter-dam upper bottom surface is designed to arc lower, can forms stable rising flow field, improve the condition of inclusion floating, improve steel quality.The dam can the preceding short-circuit flow generation of pressing close to middle bag bottom that occurs of crystallization control device after the pushing off the slag.
This shows; The present invention abandons extensive straight, weir, dam pattern that square shape is taken as the leading factor in the past, and is different according to the flow velocity of molten steel in the middle bag, science be provided with the curved dam weir of more pressing close to Zhong Bao flow field characteristics; Thereby can stablize the molten steel flow velocity of big bag turbulent area; Form stable rising flow field, improve the condition of inclusion floating, improve steel quality.
The technical scheme that the present invention further limits is:
Weir, aforesaid tundish dam flow control device, slag weir are arranged on big bag beam district one side of tundish and wrap long nozzle greatly apart from the equidistant position of tundish wall; The pushing off the slag counter-dam is arranged on tundish 1/2nd positions and relies on big bag long nozzle side.Such position is provided with the molten steel flow velocity that more helps stable big bag turbulent area, forms stable rising flow field.
Weir, aforesaid tundish dam flow control device, the dam all is fixed in the tundish inner chamber through fire-resistant adhesives after slag weir, pushing off the slag counter-dam and the pushing off the slag.
Weir, aforesaid tundish dam flow control device, pushing off the slag Hou Ba rear portion are provided with a downward protruding inclusion that is shaped as cuboid.A next inclusion mainly is because in casting latter stage or during guaranteeing replacement greatly, in the tundish liquid level have the short time except, this down protruding inclusion be that bag is rolled up slag in order to prevent too early appearance vortex in making.
Weir, aforesaid tundish dam flow control device, the radian of slag weir is 26～32 °
Weir, aforesaid tundish dam flow control device, the radian of pushing off the slag counter-dam is 42～45 °.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one.
Fig. 2 is middle bag neutral surface velocity gradient figure.
Fig. 3 is a motion pattern in the middle bag.
Fig. 4 is the stereogram of slag weir.
Fig. 5 is the stereogram of pushing off the slag counter-dam.
The specific embodiment
Embodiment one
Present embodiment is weir, an a kind of tundish dam flow control device, and its structure is as shown in Figure 1, comprise put fore slag weir 1, be arranged on the pushing off the slag counter-dam 2 at slag weir 1 rear portion and be arranged on the pushing off the slag at pushing off the slag counter-dam 2 rear portions after dam 3.Slag weir 1 is arranged on big bag beam district one side of tundish and wraps long nozzle 11 greatly apart from the equidistant position of tundish wall; Pushing off the slag counter-dam 2 is arranged on tundish 1/2nd positions and relies on big bag long nozzle 11 sides, and such position is provided with the molten steel flow velocity that more helps stable big bag turbulent area, forms stable rising flow field.Dam 3 all is fixed in the tundish inner chamber through fire-resistant adhesives after slag weir 1, pushing off the slag counter-dam 2 and the pushing off the slag.The shape of slag weir 1 is as shown in Figure 4; The bottom on the left surface of being shaped as of slag weir 1 all is that the cross section of outer arcuate is trapezoidal hexahedron; The last base 6 that is its left surface 5 all is an arc with bottom 7, and arc protrudes laterally, and the radian of slag weir 1 is 26～32 °.The shape of pushing off the slag counter-dam is as shown in Figure 5; The bottom on the upper bottom surface of being shaped as of pushing off the slag counter-dam 2 all is that the cross section of arc lower is pentagonal heptahedron; The last base 9 that is its upper bottom surface 8 all is an arc with bottom 10, and arc protrudes downwards, and the radian of pushing off the slag counter-dam 2 is 42～45 °.The cross section of pushing off the slag counter-dam 2 is for being provided with the pentagon that a breach forms on a rectangle.Dam 3 is shaped as cuboid after the pushing off the slag.3 rear portions, dam are provided with a downward protruding inclusion that is shaped as cuboid 4 after the pushing off the slag.The present invention is different according to the flow velocity of molten steel in the middle bag; The slag weir left surface is arranged to the molten steel flow velocity of outer arcuate with stable big bag turbulent area; Pushing off the slag counter-dam upper bottom surface is designed to arc lower to form stable rising flow field, improves the condition of inclusion floating, improve steel quality.
Through the CFX10.0 mathematical software effect of the present invention is simulated.Velocity gradient on the middle bag neutral surface and middle bag Flow Field Distribution are respectively like Fig. 2 and Fig. 3.
As shown in Figure 2, velocity distribution of flow field is even on the middle bag neutral surface, does not have tangible vortex and produces, and the flow field on the whole right side is extremely stable, greatly reduces the behavior that the volume slag that produces in the normal casting cycle etc. has a strong impact on steel quality.
As shown in Figure 3, the streamline in the middle bag presents the upwelling of rule, such Flow Field Distribution, and the inclusion floating in helping in the bag is removed.
The present invention can also have other embodiment, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the scope of requirement protection of the present invention.
Claims (5)
1. weir, tundish dam flow control device; Comprise put at the anterior slag weir (1) of tundish inner chamber, be arranged on the pushing off the slag counter-dam (2) at slag weir (1) rear portion and be arranged on the pushing off the slag at pushing off the slag counter-dam (2) rear portion after dam (3), it is characterized in that: the bottom of going up that is shaped as near that side (5) of big bag long nozzle (11) of said slag weir (1) all is that the cross section of outer arcuate is trapezoidal hexahedron; The cross section that the last base (9) that is shaped as upper bottom surface (8) of said pushing off the slag counter-dam (2) and bottom (10) all are arc lower is pentagonal heptahedron; Dam after the said pushing off the slag (3) be shaped as cuboid.
2. weir, tundish as claimed in claim 1 dam flow control device is characterized in that: dam (3) all is fixed in the tundish inner chamber through fire-resistant adhesives after said slag weir (1), pushing off the slag counter-dam (2) and the pushing off the slag.
3. weir, tundish as claimed in claim 1 dam flow control device is characterized in that: rear portion, dam after the said pushing off the slag (3) is provided with a downward protruding inclusion that is shaped as cuboid.
4. weir, tundish as claimed in claim 1 dam flow control device is characterized in that: the radian of said slag weir (1) is 26～32 °.
5. weir, tundish as claimed in claim 1 dam flow control device is characterized in that: the radian of said pushing off the slag counter-dam (2) is 42～45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102964003A CN101947643B (en) | 2010-09-26 | 2010-09-26 | Weir flow-control device for tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102964003A CN101947643B (en) | 2010-09-26 | 2010-09-26 | Weir flow-control device for tundish |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101947643A CN101947643A (en) | 2011-01-19 |
| CN101947643B true CN101947643B (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102964003A Expired - Fee Related CN101947643B (en) | 2010-09-26 | 2010-09-26 | Weir flow-control device for tundish |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240784A (en) * | 2011-06-24 | 2011-11-16 | 青岛云路新能源科技有限公司 | Flow steel tank |
| CN107350464A (en) * | 2017-06-28 | 2017-11-17 | 秦皇岛首秦金属材料有限公司 | A kind of continuous casting production recycling method |
| KR101981455B1 (en) * | 2017-12-11 | 2019-05-24 | 주식회사 포스코 | Processing apparatus for molten material |
| CN113042721B (en) * | 2021-03-15 | 2022-03-25 | 武汉钢铁有限公司 | Dam-shaped vortex-resisting device for bottom of ladle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010057268A (en) * | 1999-12-21 | 2001-07-04 | 신현준 | Molten steel feeding appratus for sequential casting of mixed graes |
| CN2461682Y (en) * | 2000-12-29 | 2001-11-28 | 樊龙生 | Pouring basket slag stop weir for steelmaking |
| CN201249259Y (en) * | 2008-06-05 | 2009-06-03 | 广州珠江钢铁有限责任公司 | Slab continuous casting tundish |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3178987B2 (en) * | 1995-03-29 | 2001-06-25 | 日立造船株式会社 | Twin roll thin sheet continuous casting machine |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010057268A (en) * | 1999-12-21 | 2001-07-04 | 신현준 | Molten steel feeding appratus for sequential casting of mixed graes |
| CN2461682Y (en) * | 2000-12-29 | 2001-11-28 | 樊龙生 | Pouring basket slag stop weir for steelmaking |
| CN201249259Y (en) * | 2008-06-05 | 2009-06-03 | 广州珠江钢铁有限责任公司 | Slab continuous casting tundish |
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| CN101947643A (en) | 2011-01-19 |
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Granted publication date: 20120725 Termination date: 20200926 |