CN202052919U - Molten steel supply device for continuous casting in steel making - Google Patents
Molten steel supply device for continuous casting in steel making Download PDFInfo
- Publication number
- CN202052919U CN202052919U CN2011200625654U CN201120062565U CN202052919U CN 202052919 U CN202052919 U CN 202052919U CN 2011200625654 U CN2011200625654 U CN 2011200625654U CN 201120062565 U CN201120062565 U CN 201120062565U CN 202052919 U CN202052919 U CN 202052919U
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- steel
- molten steel
- river
- hollow cylinder
- continuous casting
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model discloses a molten steel supply device for continuous casting in steel making. A hollow cylinder is arranged outside an opening of a ladle, refining and impurity removal are mainly centralized in the cylinder, nonmetal inclusion and passive bubbles which are mixed in molten steel and finally enters a continuous casting die are reduced, therefore, the surface defect of a casting blank is reduced and the performance of the casting blank is improved.
Description
Technical field
The utility model relates to a kind of device of field of steel-making, especially a kind of molten steel feedway that is used for steel-making continuous casting.
Background technology
In modernized industrial fields such as automobiles, often need to use few surface defects, the mild steel that has excellent formability or even ultra-low-carbon steel, for example outer cartridge plate of automobile etc.And the non-metallic inclusions such as aluminium oxide that have in the strand of the defective on low carbon steel plate surface and forming property and continuous casting have very big relation, and for example nonmetal inclusion such as aluminium oxide often causes steel plate to produce cracking, sliver etc. in the process of cold rolling processing.Therefore, the cleanliness factor that remove nonmetal inclusion such as aluminium oxide, improves molten steel is to prevent the effective means that produces such as cracking.
And nonmetal inclusions such as aluminium oxide mainly are to produce in the refining process of molten steel, and the oxidation of molten steel also is one of inducement of nonmetal inclusion in this external casting process.Therefore, in each operation of refining and continuous casting molten steel being carried out cleaning and handle, for example improve the cleanliness factor of molten steel in the tundish of refining, is the effective means of the removal nonmetal inclusion that is widely adopted.Usually adopt in tundish in the prior art, above between the molten steel supply port of the steel ladle mouth of a river and tundish or the bottom refractory lance etc. is set to be blown into not active gases, active gases does not produce bubble, thereby catch oxide inclusions such as aluminium oxide, the bubble band the oxide inclusions that captures and is floated to molten steel surface together and be adsorbed onto slag blanket then, discharges molten steel.
Yet there is such problem in said method, promptly for the nonmetal inclusion Ex-all, usually be blown into excessive not active gases and cause not active gases not float fully to discharge and some is sneaked in the molten steel, this part is mingled in the surface that bubble in the molten steel is adsorbed on mould easily, thereby form gas hole defect at casting billet surface when causing solidification of molten steel, and then cause the problems of crack in the following process.In addition, be adsorbed on also easy molten steel inside, the recontamination molten steel of under the influence of molten steel disturbance, being involved in once more of nonmetal inclusion of slag blanket.
Therefore, develop and a kind ofly can improve the nonmetal inclusion removal effect, improve molten steel cleanness, thus improve continuous casting steel billet performance, reduce problem such as surface pores defective, have important practical significance and application prospects.
Summary of the invention
It is a kind of such as continuous castings such as mild steel molten steel feedway that the purpose of this utility model promptly is to provide, and can reduce the defective of continuous casting steel billet, improves the performance of following process steel plate.
The technical scheme that the utility model adopted is as follows: a kind of continuous casting molten steel feedway, it comprises a steel ladle, a tundish, molten steel in the steel ladle injects tundish by a steel ladle mouth of a river of immersing in the tundish molten steel, and the molten steel in the tundish injects mould for continuous casting by the middle water containing opening that immerses molten steel in the mould for continuous casting; The liquid outlet at the steel ladle mouth of a river is arranged on its bottom, side; The junction at the steel ladle and the steel ladle mouth of a river is provided with molten steel flow regulator and active gases inlet not; Hollow cylinder of arranged outside at the steel ladle mouth of a river, and the upper end of this hollow cylinder combines with the upper end at the steel ladle mouth of a river is airtight, and the bottom of hollow cylinder combines with the bottom surface of tundish is airtight; Hollow cylinder has the molten steel through flow hole at the opposite side of the liquid outlet at the steel ladle mouth of a river, and the height of the molten steel through flow hole of hollow cylinder is higher than the liquid outlet at the steel ladle mouth of a river; The upper end of hollow cylinder is provided with steam vent, and steam vent links to each other with decompressor.
The beneficial effects of the utility model are, owing to be provided with the hollow cylinder that is centered around the outside, the steel ladle mouth of a river, the feeding of feasible not active gases and the removal of nonmetal inclusion mainly concentrate in the hollow cylinder to be finished, nonmetal inclusion and not active bubble greatly reduce by the quantity that tundish finally enters mould like this, thereby improve the quality of strand; The molten steel through flow hole of this external hollow cylinder and the liquid outlet at the steel ladle mouth of a river are oppositely arranged, and have strengthened the effect that reduces nonmetal inclusion and not active bubble outflow hollow cylinder; Decompressor and steam vent are set on the hollow cylinder have then strengthened the effect of the not active bubble floating and the molten steel of overflowing.
Description of drawings
Fig. 1 is the utility model continuous casting molten steel feedway.
The specific embodiment
Below in conjunction with accompanying drawing 1, describe each parts of the present utility model in detail: continuous casting molten steel feedway, it comprises a steel ladle 1, a tundish 2, molten steel in the steel ladle 1 injects tundish 2 by a steel ladle mouth of a river 3 of immersing in tundish 2 molten steel, and the molten steel in the tundish 2 injects mould for continuous casting 5 by the middle water containing opening 4 that immerses molten steel in the mould for continuous casting; The liquid outlet 6 at the steel ladle mouth of a river 3 is arranged on its bottom, side; The junction at steel ladle 1 and the steel ladle mouth of a river 3 be provided with molten steel flow regulator 7 and not active gases enter the mouth 8; Hollow cylinder 9 of arranged outside at the steel ladle mouth of a river 3, and the upper end of this hollow cylinder 9 combines with the upper end at the steel ladle mouth of a river 3 is airtight, and the bottom of hollow cylinder 9 combines with the bottom surface of tundish 2 is airtight; Hollow cylinder 9 has molten steel through flow hole 10 at the opposite side of the liquid outlet 6 at the steel ladle mouth of a river 3, and the height of the molten steel through flow hole 10 of hollow cylinder 9 is higher than the liquid outlet 6 at the steel ladle mouth of a river 3; The upper end of hollow cylinder 9 is provided with steam vent 11, and steam vent 11 links to each other with decompressor 12.
Claims (1)
1. continuous casting molten steel feedway, it comprises a steel ladle, a tundish, molten steel in the steel ladle injects tundish by a steel ladle mouth of a river of immersing in the tundish molten steel, and the molten steel in the tundish injects mould for continuous casting by the middle water containing opening that immerses molten steel in the mould for continuous casting; The liquid outlet at the steel ladle mouth of a river is arranged on its bottom, side; The junction at the steel ladle and the steel ladle mouth of a river is provided with molten steel flow regulator and active gases inlet not; Hollow cylinder of arranged outside at the steel ladle mouth of a river, and the upper end of this hollow cylinder combines with the upper end at the steel ladle mouth of a river is airtight, and the bottom of hollow cylinder combines with the bottom surface of tundish is airtight; Hollow cylinder has the molten steel through flow hole at the opposite side of the liquid outlet at the steel ladle mouth of a river, and the height of the molten steel through flow hole of hollow cylinder is higher than the liquid outlet at the steel ladle mouth of a river; The upper end of hollow cylinder is provided with steam vent, and steam vent links to each other with decompressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200625654U CN202052919U (en) | 2011-03-11 | 2011-03-11 | Molten steel supply device for continuous casting in steel making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200625654U CN202052919U (en) | 2011-03-11 | 2011-03-11 | Molten steel supply device for continuous casting in steel making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202052919U true CN202052919U (en) | 2011-11-30 |
Family
ID=45012906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200625654U Expired - Fee Related CN202052919U (en) | 2011-03-11 | 2011-03-11 | Molten steel supply device for continuous casting in steel making |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202052919U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111136256A (en) * | 2020-02-17 | 2020-05-12 | 本钢板材股份有限公司 | Molten steel continuous casting equipment and continuous casting method |
| CN112170826A (en) * | 2020-08-21 | 2021-01-05 | 华北理工大学 | Steel ladle protective sleeve structure, continuous casting device and argon blowing pouring smelting method |
-
2011
- 2011-03-11 CN CN2011200625654U patent/CN202052919U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111136256A (en) * | 2020-02-17 | 2020-05-12 | 本钢板材股份有限公司 | Molten steel continuous casting equipment and continuous casting method |
| CN112170826A (en) * | 2020-08-21 | 2021-01-05 | 华北理工大学 | Steel ladle protective sleeve structure, continuous casting device and argon blowing pouring smelting method |
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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: 20111130 Termination date: 20150311 |
|
| EXPY | Termination of patent right or utility model |