CN203030879U - Porous molten steel channel - Google Patents
Porous molten steel channel Download PDFInfo
- Publication number
- CN203030879U CN203030879U CN 201220718562 CN201220718562U CN203030879U CN 203030879 U CN203030879 U CN 203030879U CN 201220718562 CN201220718562 CN 201220718562 CN 201220718562 U CN201220718562 U CN 201220718562U CN 203030879 U CN203030879 U CN 203030879U
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- China
- Prior art keywords
- molten steel
- channel
- access bore
- porous type
- porous
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model relates to a porous molten steel channel. The porous molten steel channel is disposed between an impact zone and a casting zone of a tundish to guide flowing of molten steel and refine the molten steel. The porous molten steel channel comprises a channel outer wall and at least two channel inner holes. The channel inner holes penetrate the porous molten steel channel. Molten inlet and outlet of each channel inner hole are arranged on two sides of the porous molten steel channel respectively. The channel inner holes are vertically diagonal at the inclined angle of 0-30 degrees, and in the inclining direction, the different channel inner holes are spaced correspondingly. The channel is linear or arced or segmental in the horizontal direction. The inner holes are round or polygonal. The cross section of the channel inner holes is 300mm<2>-70000mm<2>. The area of contact of molten steel with the channel inner holes is larger, miniature inclusions in the molten steel are more likely adsorbed by the inner walls of the channel inner holes, and refining is evidently effective.
Description
Technical field
The utility model relates to continuous casting electromagnetism refining techniques field, refers in particular to the dual-channel electromagnetic refining of pans bypass type and heater and has the molten steel guide functions and a kind of porous type ladle canal of lifting passage refining effect.
Background technology
In the continuous casting of iron and steel actual production, molten steel flow field is inhomogeneous in the tundish, especially there is sluggish molten steel stagnant wake in the tundish bottom section, the inclusion floating difficulty, dam, weir, deflector are set improve the tundish flow field and distribute, but the many long temperature drop of its molten steel stroke of tundish of fluxion is bigger, causes the interior temperature field of tundish inhomogeneous, the inhomogeneities in temperature field has in various degree influence to pulling rate and slab quality, may tie conductance when serious and cause and stop watering.
The nonlinear type ladle canal of the dual-channel electromagnetic refining of pans bypass type and heater can be optimized flow field and the temperature field of tundish molten steel, promotes inclusion floating to separate effectively, and even molten steel composition and temperature.
But the nonlinear type ladle canal of the dual-channel electromagnetic refining of pans bypass type and heater in actual use, when the molten steel flow speed of ladle is big, for the etch degree that reduces ladle canal needs the bigger ladle canal of endoporus, because the ladle canal aperture is big and molten steel flow speed is fast, molten steel in the ladle canal has little time to be adsorbed by conduit wall when its micro clip foreign material flow through passage under the effect of electromagnetism constriction power, so the refining function of the ladle canal of an access bore is limited.
Summary of the invention
The purpose of this utility model is improved and is innovated at the defective that exists in the background technology and problem, a kind of increase molten steel in the space limited between tundish impact zone and the casting area and contact area of access bore of being arranged on is provided, improve the probability that the micro clip foreign material are adsorbed by the access bore wall in the molten steel, the tangible a kind of porous type ladle canal of refining effect.
The technical solution of the utility model is a kind of being arranged between tundish impact zone and the casting area of structure, and the flow direction of guide molten steel and refined molten steel comprise a kind of porous type ladle canal of channel outer wall 2 and at least two access bore 1, wherein:
Access bore 1 runs through and is arranged in this porous type ladle canal, and its molten steel is imported and exported the both sides that are separately positioned on the porous type ladle canal; Access bore 1 is obliquely installed in the vertical direction, and the inclination angle is the 0-30 degree, and different access bore 1 corresponding intervals arranges on this direction; Its passage is arc or broken line shape in the horizontal direction; Its endoporus is circular hole or polygonal hole, and the cross-sectional area of access bore 1 is 300mm
2-70000mm
2
Advantage of the present utility model and beneficial effect:
The utility model advantage is to optimize temperature field and the flow field of molten steel in the tundish, the porous type ladle canal can increase the contact area of access bore and molten steel, promote the effect that passage absorption is mingled with refined molten steel, shorten the stroke of molten steel in tundish simultaneously, make the interior liquid steel temperature of tundish even, and inclusion floating is adsorbed by surface dopant in the promotion molten steel, and purify hot metal improves slab quality.
The utility model biggest advantage is the contact area that the porous type ladle canal has increased molten steel and access bore, can improve the probability that its micro clip foreign material are adsorbed by the access bore wall at the fast molten steel of flow velocity, and refining effect is obvious; Also can design simultaneously the ladle canal at difformity and varying level inclination angle according to the different fluxions of tundish, temperature field and the flow field of molten steel in the maximum optimization tundish, the inclination angle of ladle canal helps molten steel to form upwelling, promotes inclusion floating to be adsorbed by surface dopant.
Description of drawings
Fig. 1 is front view of the present utility model.
Fig. 2 is vertical view of the present utility model.
Fig. 3 is side view of the present utility model.
The specific embodiment
By Fig. 1 to Fig. 3 as can be known, the utility model is arranged between tundish impact zone and the casting area, and the flow direction of guide molten steel and refined molten steel comprise channel outer wall 2 and at least two access bore 1, wherein:
Access bore 1 runs through and is arranged in this porous type ladle canal, and its molten steel is imported and exported the both sides that are separately positioned on the porous type ladle canal; Access bore 1 is obliquely installed in the vertical direction, and the inclination angle is the 0-30 degree, and different access bore 1 corresponding intervals arranges on this direction; Its passage is linear or arc or broken line shape in the horizontal direction; Its endoporus is circular hole or polygonal hole, and the cross-sectional area of access bore 1 is 300mm
2-70000mm
2
The body that described access bore 1 and channel outer wall 2 constitute is global formation or multistage assembly unit moulding.
Described access bore 1 and channel outer wall 2 adopt the composite of refractory material or refractory material and metal.
The passage length of described access bore 1 is 100mm-2500mm.
Structural principle of the present utility model:
The utility model comprises at least two high temperature resistant erosion resistant access bore 1 and channel outer wall 2, has the effect of molten steel water conservancy diversion and lifting passage refining effect.
The porous type ladle canal, the sectional area that it is characterized in that single access bore 1 is 300mm
2-70000mm
2, access bore 1 is circular hole or polygonal hole.
There is the inclination angle of 0-30 degree in the horizontal direction in porous type access bore 1.
Passage length is 100mm-2500mm, and it is linear or arc or broken line shape.
Ladle canal can be refractory material, also can be the composite of refractory material and metal.
The utility model flows with domestic certain iron company's 4 machine 4 and waters inferior cooperate the dual-channel electromagnetic refining of pans bypass type and heater contrast experiment on bloom casting machines continuously:
Fig. 1 is to a kind of porous type ladle canal shown in Figure 3, wherein in the continuous casting of iron and steel process one water and time use two porous type ladle canals to place the tundish impact zone to the both sides working lining of casting area.
This experimental analysis access bore 1 be the refining effect of single-orifice type, amphithyrid, quadrifora linear ladle canal, the ladle molten steel flow velocity is 3T/min, by following table as can be known the porous type ladle canal compare the single-orifice type ladle canal, oxygen content obviously reduces under the identical situation suitable with the passage total sectional area of length, and molten steel tapping district cleannes index obviously improves.
| Ladle canal | The single channel inner hole section amasss (mm 2) | Access bore quantity | Passage length | Oxygen content | Tundish molten steel tapping district cleannes index |
| Single-orifice type | 50000 | 1 | 1500mm | 12ppm | 14 |
| Amphithyrid | 24000 | 2 | 1500mm | 8.5ppm | 10 |
| Quadrifora | 12000 | 4 | 1500mm | 6.4ppm | 7 |
Embodiment described in the utility model only is the description that preferred embodiment of the present utility model is carried out; be not that the utility model design and scope are limited; under the prerequisite that does not break away from the utility model design philosophy; engineers and technicians make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (3)
1. a porous type ladle canal is characterized in that this porous type ladle canal is arranged between tundish impact zone and the casting area, and the flow direction of guide molten steel and refined molten steel comprise channel outer wall (2) and at least two access bore (1), wherein:
Access bore (1) runs through and is arranged in this porous type ladle canal, and its molten steel is imported and exported the both sides that are separately positioned on the porous type ladle canal; Access bore (1) is obliquely installed in the vertical direction, and the inclination angle is the 0-30 degree, and the different corresponding intervals of access bore (1) arranges on this direction; Its passage is linear or arc in the horizontal direction; Its endoporus is circular hole or polygonal hole, and the cross-sectional area of access bore (1) is 300mm
2-70000mm
2
2. a kind of porous type ladle canal according to claim 1 is characterized in that the body that described access bore (1) and channel outer wall (2) constitute is global formation or multistage assembly unit moulding.
3. a kind of porous type ladle canal according to claim 1, the passage length that it is characterized in that described access bore (1) is 100mm-2500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220718562 CN203030879U (en) | 2012-12-24 | 2012-12-24 | Porous molten steel channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220718562 CN203030879U (en) | 2012-12-24 | 2012-12-24 | Porous molten steel channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203030879U true CN203030879U (en) | 2013-07-03 |
Family
ID=48683020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220718562 Expired - Lifetime CN203030879U (en) | 2012-12-24 | 2012-12-24 | Porous molten steel channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203030879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111992702A (en) * | 2020-08-17 | 2020-11-27 | 青岛正望钢水控制股份有限公司 | Steel runner brick of electromagnetic induction heating tundish |
-
2012
- 2012-12-24 CN CN 201220718562 patent/CN203030879U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111992702A (en) * | 2020-08-17 | 2020-11-27 | 青岛正望钢水控制股份有限公司 | Steel runner brick of electromagnetic induction heating tundish |
| CN111992702B (en) * | 2020-08-17 | 2021-08-13 | 青岛正望钢水控制股份有限公司 | Steel runner brick of electromagnetic induction heating tundish |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |