CN101062520B - Pouring basket heating arrangement for continuous casting technology - Google Patents
Pouring basket heating arrangement for continuous casting technology Download PDFInfo
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- CN101062520B CN101062520B CN2006100260729A CN200610026072A CN101062520B CN 101062520 B CN101062520 B CN 101062520B CN 2006100260729 A CN2006100260729 A CN 2006100260729A CN 200610026072 A CN200610026072 A CN 200610026072A CN 101062520 B CN101062520 B CN 101062520B
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Abstract
The invention relates to the bakie heating device for continuous casting with bottom blowing holes at the bottom wall of the heating chamber, at least one block of dispersion ventilating brick surrounded with corresponding ventilating shell, air conductive pipe set under the dispersion ventilating brick. When it blows air to the air duct, air is blown to the steel liquid inside the plasma heating chamber, the steel liquid under the air twisting of the blown air to speed up the even distribution of temperature of the steel liquid, reducing the temperature of its surface and the percentage of high temperature steel liquid and reducing its radiation to enduring material, better solving the serious consumption of fire proof material.
Description
Technical field
The present invention relates to the conticaster in the metallurgical smelting process, more specifically refer to a kind of tundish heater that is used for continuous casting process.
Background technology
At present, in metallurgical smelting process, six stream circle billet casters are a kind of Casting Equipments commonly used.In this Casting Equipment, tundish is a key component, and tundish is a T type structure, is equipped with the plasma firing equipment.In the tundish internal structure, two middle slag weirs are arranged, make with refractory material, the installation site can be referring to Fig. 1.The hole that has the circulation molten steel on the middle slag weir is steel passing hole.In the main effect of slag weir be: (1) forms the plasma heating clamber with main slag weir, and the hyperthermia radiation that prevents plasma torch is to other position of tundish, reduction tundish service life.(2) stop that the slag in the plasma heating clamber flows into casting stream zone.Steel passing hole on the middle slag weir impels molten steel to form certain flow field in tundish, and liquid steel temperature is even in the come-up of promotion steel inclusion and the tundish, and this effect is all influential to the solidified structure and the level of inclusions of continuous casting billet.In use, tundish exists the easy corrode of anti-material in the heating clamber, the problem of peeling off even caving in.Think that in the process of plasma heating, tundish heating clamber upper temp is very high, and temperature is high more, density is low more, and the molten steel of heat is just more to come-up, in heating, this live in concentrated communities more and more serious.Simultaneously, because the high-temperature molten steel casting area to both sides well transmits, cause heating clamber middle and upper part heat to be concentrated, molten steel temperature is more and more higher in heating process, cause refractory material in the heating clamber strong corrode and peel off, even cause accidents such as caving in of the coming off of clad refractory material, middle clad, having a strong impact on carrying out smoothly of this technical process.Generally being no more than three stoves when particularly, carrying out sequence casting just stops owing to middle clad caves in.Traditional tundish structure, unreasonable for the situation of plasma heating, can not effectively heat energy be distributed to molten steel, cause heating clamber middle and upper part heat concentration problem, can not guarantee effective heating of molten steel, influence the life-span of anti-material around the heating clamber again.Therefore, must traditional tundish structure be improved.
Summary of the invention
The objective of the invention is the problems referred to above, a kind of tundish heater that is used for continuous casting process is provided at traditional continuous casting tundish structure existence.
To achieve these goals, the present invention adopts following technical scheme:
This is used for the tundish heater of continuous casting process, heater is formed the plasma heating clamber of wall opening by two middle slag weirs and main slag weir and sidewall, diapire, middle slag weir and main slag weir, sidewall adopt refractory material to make, have the steel passing hole of circulation molten steel on the middle slag weir, diapire comprises conductive brick, conductive brick is two-layer down;
At least be embedded with a diffuse type air brick in the last conductive brick of described plasma heating clamber diapire, diffuse type air brick periphery is provided with the air brick shell that adapts with the diffuse type air brick, and following conductive brick is positioned at diffuse type air brick below and wireway is set; Air blowing flow argon gas in the described diffuse type air brick is 8-30NL/min.
The described diffuse type air brick that is positioned at conductive brick is up-small and down-big bullet, and described air brick shell also is up-small and down-big conical shell.
Described diffuse type air brick is positioned at the center of plasma heating clamber diapire.
The described wireway that is positioned at diffuse type air brick below and is positioned at conductive brick to be provided with keeps communicating with air brick.
In technique scheme of the present invention, in fact mainly be on the plasma heating clamber diapire of the tundish heater of continuous casting process, to offer the bottom blowing pore, the concrete structure of bottom blowing pore is: be embedded with at least one block of diffuse type air brick in last conductive brick, diffuse type air brick periphery is provided with the air brick shell that adapts with the diffuse type air brick, and following conductive brick is positioned at diffuse type air brick below and wireway is set.After wireway is blown into gas in the downward conductive brick, gas is blown in the molten steel of plasma heating clamber by air brick, molten steel below the plasma heating region produces strong agitation owing to the gas that is blown into stirs, can quicken molten steel temperature in the plasma thermal treatment zone evenly, reduce the ratio of high-temperature molten steel and the temperature of surperficial molten steel; Because the high-temperature molten steel ratio reduces, high-temperature molten steel leads to the present tundish refractory material serious problem of loss when plasma heats that solves preferably to the radiation falloff of anti-material simultaneously.
Description of drawings
Fig. 1 is a tundish heater perspective view of the present invention.
Fig. 2 faces structural representation for tundish heater of the present invention.
Fig. 3 is a tundish heater plan structure schematic diagram of the present invention.
Fig. 4 is the partial enlarged drawing at the bottom blowing pore position of tundish heater of the present invention.
The bottom blowing pore that Fig. 5 a-d is respectively tundish heater of the present invention is positioned at diverse location and quantity schematic diagram.
The specific embodiment
Please consult shown in Figure 1 earlier, the tundish heater that is used for continuous casting process of the present invention is the same with traditional tundish heater, form the plasma heating clamber of wall opening by two middle slag weirs 1,2 and main slag weir 3 and sidewall 4, diapire 5, middle slag weir 1,2 and main slag weir 3, sidewall 4 adopt refractory materials to make, have the steel passing hole of circulation molten steel on the middle slag weir 1 and 2, diapire 5 comprises conductive brick 51, following conductive brick 52 two-layer (see figure 4)s.
Different is, on described plasma heating clamber diapire 5, offer the bottom blowing pore, the concrete structure of bottom blowing pore sees also Fig. 2-shown in Figure 4, at least be embedded with a diffuse type air brick 53 in the last conductive brick 51 of diapire 5, diffuse type air brick 53 peripheries are provided with the air brick shell 54 that adapts with the diffuse type air brick, air brick shell 54 also is embedded in the conductive brick 51, and following conductive brick 52 is positioned at diffuse type air brick 53 belows and wireway 55 is set, and wireway 55 communicates with air brick 53.
The described diffuse type air brick 53 that is positioned at conductive brick 51 is up-small and down-big bullet, and described air brick shell 54 also is up-small and down-big conical shell.Air brick 53 and air brick shell 54 are tapered to guarantee that air brick can not float in molten steel.
The described wireway 55 that is positioned at diffuse type air brick 53 belows and is positioned at conductive brick 52 to be provided with keeps communicating with air brick 53.
See also shown in Fig. 5 a-d,
Fig. 5 a has illustrated the bottom blowing pore, and just diffuse type air brick 53 is positioned at the situation of the center of plasma heating clamber diapire.At this moment, diffuse type air brick 53 and the wireway 55 that is positioned at conductive brick 52 to be provided with all are positioned at the center of heating clamber diapire, and air brick 53 keeps communicating with wireway 55.
Fig. 5 b has illustrated the bottom blowing pore, and just diffuse type air brick 53 is positioned at the situation of the inclined to one side forward position of plasma heating clamber diapire.At this moment, diffuse type air brick 53 and the wireway 55 that is positioned at conductive brick 52 to be provided with all are positioned at the inclined to one side forward position of heating clamber diapire, and air brick 53 keeps communicating with wireway 55.
Fig. 5 c has illustrated the bottom blowing pore, and just diffuse type air brick 53 is positioned at the situation of the inclined to one side rear positions of plasma heating clamber diapire.At this moment, diffuse type air brick 53 and the wireway 55 that is positioned at conductive brick 52 to be provided with all are positioned at the inclined to one side rear positions of heating clamber diapire, and air brick 53 keeps communicating with wireway 55.
Fig. 5 d has illustrated to have two bottom blowing pores, these two bottom blowing pores are positioned at the both sides of plasma heating clamber diapire center, at this moment, two corresponding diffuse type air bricks 53 then should be arranged and be positioned at two wireways 55 of conductive brick 52 settings down, each air brick 53 keeps communicating with corresponding wireway 55.
Through Study on Mathematic Model and hydraulic model research, and experimental result shows that adopt tundish bottom blowing pore, in general, to the bottom blowing pore, promptly the best air blowing flow argon gas in the diffuse type air brick 53 is about 8-30NL/min by wireway 55.Molten steel below the plasma heating region is owing to the stirring of gas produces strong agitation, can quicken molten steel temperature in the plasma thermal treatment zone evenly, can have the following advantages:
Reduce the ratio of high-temperature molten steel and the temperature of surperficial molten steel;
Because thermal treatment zone molten steel surface temperature is lower during bottom blowing gas, the plasma efficiency of heating surface must increase;
Because the high-temperature molten steel ratio reduces, high-temperature molten steel is to solve the serious better approach of present tundish refractory material loss when plasma heats to the radiation falloff of anti-material so adopt tundish bottom blowing gas.
In addition, tundish heater of the present invention is with air brick and tundish conductive brick assembling all-in-one-piece bottom blowing air hole structure.Because the conductive brick material is very fine and close, can play near the be heated effect of bleed-out of the tundish bottom blowing pore that prevents.Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (4)
1. tundish heater that is used for continuous casting process, heater is formed the plasma heating clamber of wall opening by two middle slag weirs and main slag weir and sidewall, diapire, middle slag weir and main slag weir, sidewall adopt refractory material to make, have the steel passing hole of circulation molten steel on the middle slag weir, diapire comprises conductive brick, conductive brick is two-layer down
It is characterized in that:
At least be embedded with a diffuse type air brick in the last conductive brick of described plasma heating clamber diapire, diffuse type air brick periphery is provided with the air brick shell that adapts with the diffuse type air brick, and following conductive brick is positioned at diffuse type air brick below and wireway is set;
Air blowing flow argon gas in the described diffuse type air brick is 8-30NL/min.
2. the tundish heater that is used for continuous casting process as claimed in claim 1,
It is characterized in that:
The described diffuse type air brick that is positioned at conductive brick is up-small and down-big bullet, and described air brick shell also is up-small and down-big conical shell.
3. the tundish heater that is used for continuous casting process as claimed in claim 1 or 2,
It is characterized in that:
Described diffuse type air brick is positioned at the center of plasma heating clamber diapire.
4. the tundish heater that is used for continuous casting process as claimed in claim 3,
It is characterized in that:
The described wireway that is positioned at diffuse type air brick below and is positioned at conductive brick to be provided with keeps communicating with air brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100260729A CN101062520B (en) | 2006-04-26 | 2006-04-26 | Pouring basket heating arrangement for continuous casting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100260729A CN101062520B (en) | 2006-04-26 | 2006-04-26 | Pouring basket heating arrangement for continuous casting technology |
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| Publication Number | Publication Date |
|---|---|
| CN101062520A CN101062520A (en) | 2007-10-31 |
| CN101062520B true CN101062520B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100260729A Active CN101062520B (en) | 2006-04-26 | 2006-04-26 | Pouring basket heating arrangement for continuous casting technology |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059328A (en) * | 2010-09-27 | 2011-05-18 | 鞍山亚赛电磁设备有限公司 | Vertical two-channel power frequency tundish heating device with core |
| CN111215613A (en) * | 2020-01-13 | 2020-06-02 | 北京科技大学 | Tundish and using method thereof |
| CN112662832A (en) * | 2020-12-18 | 2021-04-16 | 芜湖新兴铸管有限责任公司 | Production method of special-section square billet of high-carbon chromium bearing steel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286436Y (en) * | 1996-12-30 | 1998-07-22 | 钟长林 | Equipment for continuous casting and refining stainless steel |
| CN1217959A (en) * | 1997-11-14 | 1999-06-02 | 中国科学技术大学 | Method for plasma heating ladle online to cast continuously at constant low overheated temperature |
-
2006
- 2006-04-26 CN CN2006100260729A patent/CN101062520B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286436Y (en) * | 1996-12-30 | 1998-07-22 | 钟长林 | Equipment for continuous casting and refining stainless steel |
| CN1217959A (en) * | 1997-11-14 | 1999-06-02 | 中国科学技术大学 | Method for plasma heating ladle online to cast continuously at constant low overheated temperature |
Non-Patent Citations (1)
| Title |
|---|
| 齐新霞,刘国林,李子林,包燕平.六流方坯中间包流场的物理模拟.2004年全国炼钢、轧钢生产技术会议文集.2004,(2004),384-388. * |
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| CN101062520A (en) | 2007-10-31 |
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