CN110935872B - Blocking cone for tundish nozzle and nozzle blocking method - Google Patents
Blocking cone for tundish nozzle and nozzle blocking method Download PDFInfo
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- CN110935872B CN110935872B CN201911129034.XA CN201911129034A CN110935872B CN 110935872 B CN110935872 B CN 110935872B CN 201911129034 A CN201911129034 A CN 201911129034A CN 110935872 B CN110935872 B CN 110935872B
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- nozzle
- plugging
- tundish
- steel pipe
- blocking
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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
- B22D41/14—Closures
Abstract
The invention discloses a plugging cone for a tundish nozzle and a nozzle plugging method, and relates to the technical field of metallurgical production. The method for plugging the water gap of the tundish comprises the following steps: and (3) inserting the tundish nozzle into the conical flow control nozzle from the upper part of the tundish nozzle downwards by using a plugging cone, quickly melting aluminum particles in the inner cavity of the steel pipe in molten steel, then flowing out from a gap for liquid to flow through and plugging the flow control nozzle together with the plugging part, thereby realizing the complete plugging of the tundish nozzle. Compared with the prior art, the invention can rapidly plug the tundish nozzle, avoid the phenomena of plugging failure and molten steel seeping out from between the casting nozzle brick and the sliding plate brick, eliminate potential safety hazards brought to production equipment and personal safety and prevent accident expansion.
Description
Technical Field
The invention relates to the technical field of metallurgical production, in particular to a blocking cone for a tundish nozzle and a nozzle blocking method.
Background
The tundish of the billet caster is a transition container for connecting the ladle and the crystallizer, receives molten steel poured from the ladle, and injects the molten steel into the crystallizer through a tundish nozzle. The tundish nozzle is shown in figure 1 and comprises a brick cup 101 embedded in the shell of a tundish 102, the brick cup 101 is provided with an inner cavity which is communicated up and down, the brick cup 101 is provided with a casting nozzle brick 103 extending into the inner cavity from the lower end, a zirconium bowl 106 is embedded in the casting nozzle brick 103, the upper part of the zirconium bowl 106 is provided with a conical flow control nozzle, the lower end of the casting nozzle brick 103 is provided with a slide plate brick 104 with a molten steel flow channel, the molten steel flow channel of the slide plate brick 104 is embedded with an inner lining layer 105, and the molten steel flow channel is communicated with the flow control nozzle. When molten steel of the tundish is injected into the crystallizer, sliding plate bricks with different calibers need to be replaced through a tundish quick-change oil cylinder, and the flow of the molten steel is controlled, so that the pulling speed control and the multi-furnace continuous casting are realized, and the purposes of stable production and reduction of production cost are achieved. However, if steel infiltration accidents of the quick-change mechanism occur during the replacement of the slide plate brick, abnormal overflow of high-temperature molten steel can be caused if the control is not good, and great harm is brought to equipment and personal safety. When the tundish is subjected to steel infiltration of the quick-change mechanism to cause unplanned shutdown of the continuous casting machine, the water gap of the tundish is blocked by adopting the blocking cone, so that the accident is prevented from being enlarged, and the equipment and the personal safety are protected. At present, a plugging cone for a tundish nozzle is shown in figure 2 and comprises a plugging cone 5, wherein the plugging cone 5 is provided with a cylindrical part 5-2, and one end of the cylindrical part 5-2 is provided with a conical plugging part 5-1. When a tundish nozzle needs to be plugged, the plugging part of the plugging cone is vertically upward, and the plugging part is inserted into a molten steel runner of the sliding plate brick from the lower direction of the tundish nozzle, so that the tundish nozzle is plugged, as shown in fig. 3. When the tundish nozzle is used for plugging the nozzle by using the plugging cone, the plugging is easy to fail or molten steel seeps out from between a casting nozzle brick and a sliding plate brick, great potential safety hazards are brought to production equipment and personal safety, and great economic loss can be caused in serious cases.
Disclosure of Invention
The invention aims to solve the technical problem of providing a blocking cone for a tundish nozzle.
The invention aims to solve another technical problem of providing a tundish nozzle plugging method.
The invention aims to solve the problems that the existing tundish nozzle plugging cone for the tundish nozzle is used for plugging the tundish nozzle from the lower part of the tundish nozzle upwards, so that the plugging is difficult, molten steel is easy to seep out from between a casting nozzle brick and a sliding plate brick, and great potential safety hazards are brought to production equipment and personal safety.
The technical scheme of the blocking cone for the tundish nozzle provided by the invention is as follows: the blocking cone for the tundish nozzle comprises a blocking cone, wherein the blocking cone is provided with a cylindrical part, the lower end of the cylindrical part is provided with a conical blocking part, the upper end of the cylindrical part is connected with a steel pipe, a gap for liquid to flow through is reserved at the joint of the steel pipe and the cylindrical part, and an inner cavity of the steel pipe is filled with aluminum particles.
In the above technical scheme of the blocking cone for the tundish nozzle, a more specific technical scheme may also be: and a handle is connected above the steel pipe.
Further, the outer diameter of the steel pipe is substantially the same as the outer diameter of the cylindrical portion.
The technical scheme of the tundish nozzle plugging method provided by the invention is as follows: the method comprises the steps that a blocking cone for the tundish nozzle is used, the blocking cone for the tundish nozzle comprises a blocking cone, the blocking cone is provided with a cylindrical part, the lower end of the cylindrical part is provided with a conical blocking part, the upper end of the cylindrical part is connected with a steel pipe, and the outer diameter of the steel pipe is basically the same as that of the cylindrical part; a gap for liquid to flow through is reserved at the joint of the steel pipe and the column part, aluminum particles are filled in the inner cavity of the steel pipe, and a handle is connected above the steel pipe;
the plugging method comprises the following steps: and inserting the tundish nozzle into the conical flow control nozzle from the upper part of the tundish nozzle downwards by using a plugging cone, quickly melting aluminum particles in the inner cavity of the steel pipe in molten steel, then flowing out from a gap through which liquid flows, and plugging the flow control nozzle together with the plugging part to realize the plugging of the tundish nozzle.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the blocking cone for the tundish nozzle to insert the conical flow control nozzle downwards from the upper part of the tundish nozzle, aluminum particles in the inner cavity of the steel pipe are quickly melted in molten steel, and then flow out from a gap through which liquid flows and are blocked by the blocking part together with the blocking part. ByThe aluminum is solid in molten steel when the melting point of the aluminum is up to 2050 ℃, and related data show that: as the aluminum content in the steel increases, the dissolved oxygen content [ O ] in the steel decreases, and when [ AL ] is greater than 0.005%, the casting tends to be unsmooth. This indicates that there is Al2O3And the water is separated out and is easy to cause water gap blockage. The cooling performance of the steel is combined with the characteristics of the aluminum particles, so that the water gap of the tundish is completely blocked. The invention can quickly plug the tundish nozzle, avoids the phenomena of incapability of plugging and leakage of molten steel from between the casting nozzle brick and the sliding plate brick, eliminates potential safety hazards brought to production equipment and personal safety, prevents the accident from expanding, adopts a mode of plugging above the tundish nozzle, reduces the chance of operation of an operator approaching high-temperature overflow molten steel, and ensures the personal safety of the operator.
2. The handle is connected with the top of steel pipe, and the operating personnel of being convenient for carries out the shutoff operation, guarantees operating personnel safety. The outer diameter of the steel pipe is basically the same as that of the cylindrical part, and the structure is simple, the processing is easy, and the manufacturing cost is low.
Drawings
Fig. 1 is a schematic view of the structure of a tundish nozzle.
Fig. 2 is a schematic structural diagram of a plugging cone for a tundish nozzle in the prior art.
Fig. 3 is a schematic view of a tundish nozzle plugged by a conventional plugging cone for the tundish nozzle.
Fig. 4 is a schematic structural diagram of an embodiment of the present invention.
FIG. 5 is a schematic view of the tundish nozzle plugged by the plugging cone for the tundish nozzle according to the present invention.
Detailed Description
The invention will be further described in detail with reference to the following examples:
as shown in fig. 4, the blocking cone for the tundish nozzle comprises a blocking cone 1, wherein the blocking cone 1 is provided with a cylindrical part 1-1, the lower end of the cylindrical part 1-1 is provided with a conical blocking part 1-2, the upper end of the cylindrical part 1-1 is connected with a steel pipe 2 by spot welding, and the outer diameter of the steel pipe 2 is basically the same as that of the cylindrical part 1-1; a gap for liquid to flow through is reserved at the joint of the steel pipe 2 and the column part 1-1, aluminum particles 3 are filled in the inner cavity of the steel pipe 2, and a handle 4 is welded above the steel pipe 2.
A method for plugging a tundish nozzle comprises the following steps of using a plugging cone for the tundish nozzle shown in figure 4: the tundish nozzle is inserted into the conical flow control nozzle from the upper part of the tundish nozzle downwards by using a plugging cone, aluminum particles 3 in the inner cavity of the steel pipe 2 are quickly melted in molten steel, then flow out from a gap through which liquid flows and plug the flow control nozzle together with the plugging part 1, and the tundish nozzle is plugged, as shown in fig. 5.
The invention can rapidly plug the tundish nozzle, avoid the phenomena of no plugging and molten steel seeping out from between the sprue brick 103 and the sliding plate brick 104, eliminate potential safety hazards brought to production equipment and personal safety, prevent the accident from expanding, reduce the operation chance of an operator approaching high-temperature molten steel overflow by adopting a mode of plugging above the tundish nozzle, and ensure the personal safety of the operator.
Claims (4)
1. The utility model provides a tundish mouth of a river is with stifled awl, is equipped with column portion (1-1) including shutoff awl (1), the lower extreme of column portion (1-1) is equipped with coniform shutoff portion (1-2), its characterized in that: the upper end of the cylindrical part (1-1) is connected with a steel pipe (2), a gap for liquid to flow through is reserved at the joint of the steel pipe (2) and the cylindrical part (1-1), and aluminum particles (3) are filled in the inner cavity of the steel pipe (2).
2. The plugging cone for the tundish nozzle according to claim 1, wherein: and a handle (4) is connected above the steel pipe (2).
3. The plugging cone for the tundish nozzle according to claim 1 or 2, wherein: the outer diameter of the steel pipe (2) is basically the same as that of the cylindrical part (1-1).
4. A tundish nozzle plugging method is characterized in that: the method comprises the steps that a blocking cone for the tundish nozzle is used, the blocking cone for the tundish nozzle comprises a blocking cone (1), the blocking cone (1) is provided with a cylindrical part (1-1), the lower end of the cylindrical part (1-1) is provided with a conical blocking part (1-2), the upper end of the cylindrical part is connected with a steel pipe (2), and the outer diameter of the steel pipe (2) is basically the same as that of the cylindrical part (1-1); a gap for liquid to flow through is reserved at the joint of the steel pipe (2) and the column part (1-1), aluminum particles (3) are filled in the inner cavity of the steel pipe (2), and a handle (4) is connected above the steel pipe (2);
the plugging method comprises the following steps: and inserting the tundish nozzle blocking cone into the conical flow control nozzle from the upper part of the tundish nozzle downwards, quickly melting aluminum particles (3) in the inner cavity of the steel pipe (2) in molten steel, flowing out from a gap for liquid to flow through, and jointly blocking the flow control nozzle with the blocking part (1) to realize the blocking of the tundish nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911129034.XA CN110935872B (en) | 2019-11-18 | 2019-11-18 | Blocking cone for tundish nozzle and nozzle blocking method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911129034.XA CN110935872B (en) | 2019-11-18 | 2019-11-18 | Blocking cone for tundish nozzle and nozzle blocking method |
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| Publication Number | Publication Date |
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| CN110935872A CN110935872A (en) | 2020-03-31 |
| CN110935872B true CN110935872B (en) | 2021-07-30 |
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| CN201911129034.XA Active CN110935872B (en) | 2019-11-18 | 2019-11-18 | Blocking cone for tundish nozzle and nozzle blocking method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114799094B (en) * | 2022-04-25 | 2023-11-07 | 重庆钢铁股份有限公司 | Treatment method for steel infiltration between continuous casting tundish plates |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1232372C (en) * | 2001-06-12 | 2005-12-21 | 维苏维尤斯·克鲁斯布公司 | Stopper for reliable gas injection |
| CN202411408U (en) * | 2011-12-20 | 2012-09-05 | 鞍钢股份有限公司 | Plugging bolt for tundish water gap of continuous casting square billet |
| CN202752594U (en) * | 2012-07-12 | 2013-02-27 | 黑龙江建龙钢铁有限公司 | Tundish with flow stemming device |
| CN204381355U (en) * | 2014-12-22 | 2015-06-10 | 河北钢铁股份有限公司承德分公司 | A kind of stopper tundish botting cone |
| CN207026468U (en) * | 2017-03-10 | 2018-02-23 | 新疆八一钢铁股份有限公司 | The stifled stream hammer of continuous casting metering nozzle |
| CN109304432A (en) * | 2018-11-12 | 2019-02-05 | 莱芜钢铁集团银山型钢有限公司 | A kind of the single-point unequal protection pouring device and application method of ultra-thin big specification Aluminum steel Hot Metal in Beam Blank |
-
2019
- 2019-11-18 CN CN201911129034.XA patent/CN110935872B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1232372C (en) * | 2001-06-12 | 2005-12-21 | 维苏维尤斯·克鲁斯布公司 | Stopper for reliable gas injection |
| CN202411408U (en) * | 2011-12-20 | 2012-09-05 | 鞍钢股份有限公司 | Plugging bolt for tundish water gap of continuous casting square billet |
| CN202752594U (en) * | 2012-07-12 | 2013-02-27 | 黑龙江建龙钢铁有限公司 | Tundish with flow stemming device |
| CN204381355U (en) * | 2014-12-22 | 2015-06-10 | 河北钢铁股份有限公司承德分公司 | A kind of stopper tundish botting cone |
| CN207026468U (en) * | 2017-03-10 | 2018-02-23 | 新疆八一钢铁股份有限公司 | The stifled stream hammer of continuous casting metering nozzle |
| CN109304432A (en) * | 2018-11-12 | 2019-02-05 | 莱芜钢铁集团银山型钢有限公司 | A kind of the single-point unequal protection pouring device and application method of ultra-thin big specification Aluminum steel Hot Metal in Beam Blank |
Non-Patent Citations (1)
| Title |
|---|
| 方坯连铸生产的优化;吴华民;《连铸》;20040615(第3期);第24-25页 * |
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| CN110935872A (en) | 2020-03-31 |
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