CN201410547Y - Continuous casting tundish current stabilizer with platform structure - Google Patents
Continuous casting tundish current stabilizer with platform structure Download PDFInfo
- Publication number
- CN201410547Y CN201410547Y CN2009201075279U CN200920107527U CN201410547Y CN 201410547 Y CN201410547 Y CN 201410547Y CN 2009201075279 U CN2009201075279 U CN 2009201075279U CN 200920107527 U CN200920107527 U CN 200920107527U CN 201410547 Y CN201410547 Y CN 201410547Y
- Authority
- CN
- China
- Prior art keywords
- tundish
- flow
- molten steel
- radius
- continuous casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 10
- 239000003381 stabilizer Substances 0.000 title abstract description 27
- 229910000831 Steel Inorganic materials 0.000 abstract description 23
- 239000010959 steel Substances 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000007667 floating Methods 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000009865 steel metallurgy Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Landscapes
- Continuous Casting (AREA)
Abstract
一种带平台结构的连铸中间包稳流器，属于钢铁冶金连铸设备领域。稳流器分为上下两层，上层为圆台形，口部大，底部小，底部半径为口部半径的0.75～0.85倍，圆台的高度为内腔总高度的1/6～1/4；下层为圆柱形，圆柱的半径应大于圆台的底部半径50mm～80mm，即稳流器的上下两层之间应有一个平台。优点在于，合理的设计稳流器的内腔形状和尺寸，能使中间包内钢液流动形态合理，保证入口处的稳流效果，减少中间包注流区的表面湍流现象，避免出现钢液卷渣现象。同时能延长钢水在中间包内的平均停留时间，利于夹杂物充分上浮，可控制钢液的流动形态，提高铸坯质量，实现中间包冶金的目的。
A continuous casting tundish current stabilizer with a platform structure belongs to the field of iron and steel metallurgy continuous casting equipment. The current stabilizer is divided into upper and lower layers. The upper layer is in the shape of a truncated cone, with a large mouth and a small bottom. The radius of the bottom is 0.75 to 0.85 times the radius of the mouth, and the height of the truss is 1/6 to 1/4 of the total height of the inner cavity; The lower layer is cylindrical, and the radius of the cylinder should be 50mm to 80mm larger than the bottom radius of the circular platform, that is, there should be a platform between the upper and lower layers of the current stabilizer. The advantage is that the reasonable design of the shape and size of the inner cavity of the flow stabilizer can make the flow of molten steel in the tundish reasonable, ensure the steady flow effect at the inlet, reduce the surface turbulence in the injection area of the tundish, and avoid the occurrence of molten steel Slag phenomenon. At the same time, it can prolong the average residence time of the molten steel in the tundish, which is beneficial to the full floating of the inclusions, can control the flow form of the molten steel, improve the quality of the slab, and realize the purpose of tundish metallurgy.
Description
技术领域 technical field
本实用新型属于钢铁冶金连铸设备领域，特别涉及一种带平台结构的连铸中间包稳流器，可改变钢液在中间包中的流动形态，减少中间包注流区的表面湍流现象，延长钢水在包内的平均停留时间，利于夹杂物充分上浮，提高铸坯质量。The utility model belongs to the field of iron and steel metallurgical continuous casting equipment, in particular to a continuous casting tundish flow stabilizer with a platform structure, which can change the flow form of molten steel in the tundish, reduce the surface turbulence phenomenon in the injection area of the tundish, Prolonging the average residence time of molten steel in the ladle is conducive to the full floating of inclusions and improving the quality of casting slabs.
背景技术 Background technique
随着连铸技术的发展和对铸坯质量要求的不断提高，中间包的作用不可忽视，它除了稳定注流、实现多炉连浇外，更重要的是起到促进夹杂物上浮，净化钢液的作用。目前国内外冶金工作者都采用停留时间分布(RTD)曲线形状来反映中间包内的活塞区，返混区，死区以及短路流之间的比例，进而作为判断中间包冶金效果优劣的依据。With the development of continuous casting technology and the continuous improvement of the quality requirements of the slab, the role of the tundish cannot be ignored. In addition to stabilizing the injection flow and realizing continuous casting in multiple furnaces, it is more important to promote the floating of inclusions and purify the steel. The role of liquid. At present, metallurgists at home and abroad use the shape of the residence time distribution (RTD) curve to reflect the ratio of the piston zone, back-mixing zone, dead zone and short-circuit flow in the tundish, and then use it as a basis for judging the metallurgical effect of the tundish. .
中间包稳流器是稳定中间包水口区域钢水流动，防止钢渣卷入钢水造成连铸坯内部质量缺陷，促进夹杂物上浮，提高中间包冶金效果的功能性耐火材料。稳流器的内腔结构在很大程度上影响着中间包流动形态和RTD曲线的形状，合理的稳流器内腔结构能使中间包内钢液流动形态合理，有效防止钢水飞溅，使钢液有序流动，活塞区比例大，夹杂物充分上浮，提高铸坯质量。目前，某些钢厂的稳流器内腔设计不合理，导致了钢液流动不平稳，造成表面卷渣，夹杂物不易上浮等问题，影响了中间包的冶金效果。因此，应在考虑钢液流动形态和RTD曲线的基础上对稳流器内腔的几何形状进行设计。The tundish flow stabilizer is a functional refractory material that stabilizes the molten steel flow in the nozzle area of the tundish, prevents the internal quality defects of the continuous casting slab caused by the slag being involved in the molten steel, promotes the floating of inclusions, and improves the metallurgical effect of the tundish. The cavity structure of the flow stabilizer affects the flow pattern of the tundish and the shape of the RTD curve to a large extent. A reasonable structure of the cavity of the flow stabilizer can make the flow pattern of the molten steel in the tundish reasonable, effectively prevent the molten steel from splashing, and make the steel The liquid flows in an orderly manner, the proportion of the piston area is large, and the inclusions fully float up to improve the quality of the billet. At present, the unreasonable design of the inner cavity of the current stabilizer in some steel plants has led to unsteady flow of molten steel, resulting in problems such as surface slag entanglement and inclusions that are not easy to float up, which affects the metallurgical effect of the tundish. Therefore, the geometric shape of the inner chamber of the flow stabilizer should be designed on the basis of considering the flow pattern of molten steel and the RTD curve.
发明内容 Contents of the invention
本实用新型的目的在于提供一种带平台结构的连铸中间包稳流器，能延长出口浓度最大响应时间，提高活塞区比例，减小死区比例，从而使中间包内钢液成分和温度均匀，夹杂物合格率提高，保证中间包的冶金效果。The purpose of this utility model is to provide a continuous casting tundish flow stabilizer with a platform structure, which can prolong the maximum response time of the outlet concentration, increase the proportion of the piston area, and reduce the proportion of the dead area, so that the composition and temperature of the molten steel in the tundish Uniformity, the qualified rate of inclusions is improved, and the metallurgical effect of the tundish is guaranteed.
本实用新型为空心内腔的容器状结构，稳流器内腔分为上下两层，上层为圆台形，口部大，底部小，底部半径为口部半径的0.75～0.85倍，圆台的高度为内腔总高度的1/6～1/4时，稳流效果最好，中间包流场最优。下层为圆柱形，圆柱的半径应大于圆台的底部半径50mm～80mm，即稳流器的上下两层之间应有一个平台。The utility model is a container-like structure with a hollow inner cavity. The inner cavity of the flow stabilizer is divided into upper and lower layers. When it is 1/6 to 1/4 of the total height of the inner cavity, the steady flow effect is the best, and the tundish flow field is optimal. The lower layer is cylindrical, and the radius of the cylinder should be 50mm to 80mm larger than the bottom radius of the circular platform, that is, there should be a platform between the upper and lower layers of the current stabilizer.
本发明的有益效果：该稳流器内腔采用上部开口大，底部小，过渡段有平台的结构，能保证稳定的稳流效果，防止液面卷渣，使钢液成分及温度混合更加均匀。通过对某钢厂铸机使用原型稳流器内腔和新稳流器内腔的RTD曲线计算，得出使用新稳流器内腔结构后，出口最大浓度时间延长了71s，活塞区比例增加了10％，死区比例降了2.4％，中间包冶金效果明显提高。从图2也可看出，使用新稳流器内腔结构后，RTD曲线明显右移，且峰值增大，可见采用新稳流器内腔结构，可使钢液运动轨迹发生改变，钢液流动更合理化，有利于促进夹杂物上浮去除，提高铸坯质量。Beneficial effects of the present invention: the inner cavity of the current stabilizer adopts a structure with a large upper opening, a small bottom, and a platform in the transition section, which can ensure a stable flow stabilization effect, prevent liquid surface slag rolling, and make the composition and temperature of molten steel mix more evenly . Through the calculation of the RTD curves of the inner cavity of the prototype stabilizer and the inner cavity of the new stabilizer in a casting machine of a steel factory, it is concluded that after the inner cavity structure of the new stabilizer is used, the maximum concentration time at the outlet is extended by 71s, and the proportion of the piston area increases 10%, the proportion of dead zone decreased by 2.4%, and the metallurgical effect of the tundish was obviously improved. It can also be seen from Fig. 2 that after using the inner cavity structure of the new flow stabilizer, the RTD curve shifts to the right obviously, and the peak value increases. It can be seen that the use of the inner cavity structure of the new flow stabilizer can change the trajectory of the molten steel, and the molten steel The flow is more rationalized, which is conducive to promoting the removal of inclusions and improving the quality of the slab.
附图说明 Description of drawings
下面结合附图和具体实施方式对本实用新型作进一步说明。Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.
图1是本实用新型的结构示意图。其中，圆台1，圆柱2，平台3。Fig. 1 is the structural representation of the utility model. Among them, round table 1,
图2是某钢厂使用原型稳流器内腔结构和新稳流器内腔结构后的RTD曲线比较。其中，a为使用原型稳流器内腔结构后的RTD曲线，b为使用新稳流器内腔结构后的RTD曲线。Figure 2 is a comparison of the RTD curves of a steel plant using the inner cavity structure of the prototype current stabilizer and the inner cavity structure of the new current stabilizer. Among them, a is the RTD curve after using the cavity structure of the prototype current stabilizer, and b is the RTD curve after using the new cavity structure of the current stabilizer.
具体实施方式 Detailed ways
将稳流器放置在中间包水口正下方。如图1所示，稳流器内腔结构分为上下两层，上层为圆台形1，口部大，底部小，底部半径为口部半径的0.75～0.85倍，能有效防止液面卷渣，圆台高度为内腔总高度的1/6～1/4时，中间包流场最优。下层为圆柱形2，圆柱的半径应大于圆台的底部半径50mm～80mm，即保证在过渡处有一段平台3。Place the flow stabilizer directly below the nozzle of the tundish. As shown in Figure 1, the inner cavity structure of the flow stabilizer is divided into upper and lower layers. The upper layer is in the shape of a
合理的设计稳流器内腔的尺寸和形状，可使RTD曲线右移且峰值增大，改善了中间包内钢液流动形态，利于成分与温度的均匀混合，提高了夹杂物合格率，达到中间包冶金的目的。Reasonable design of the size and shape of the inner cavity of the current stabilizer can make the RTD curve shift to the right and increase the peak value, which improves the flow shape of molten steel in the tundish, facilitates the uniform mixing of components and temperature, improves the qualified rate of inclusions, and achieves The purpose of tundish metallurgy.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201075279U CN201410547Y (en) | 2009-04-22 | 2009-04-22 | Continuous casting tundish current stabilizer with platform structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201075279U CN201410547Y (en) | 2009-04-22 | 2009-04-22 | Continuous casting tundish current stabilizer with platform structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201410547Y true CN201410547Y (en) | 2010-02-24 |
Family
ID=41712439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201075279U Expired - Lifetime CN201410547Y (en) | 2009-04-22 | 2009-04-22 | Continuous casting tundish current stabilizer with platform structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201410547Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999044A (en) * | 2015-08-03 | 2015-10-28 | 武汉科技大学 | Flow stabilizing device for continuous casting mold |
| CN111950107A (en) * | 2019-04-30 | 2020-11-17 | 上海梅山钢铁股份有限公司 | Analysis method for flow characteristics of flow field in multi-flow continuous casting tundish |
-
2009
- 2009-04-22 CN CN2009201075279U patent/CN201410547Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999044A (en) * | 2015-08-03 | 2015-10-28 | 武汉科技大学 | Flow stabilizing device for continuous casting mold |
| CN111950107A (en) * | 2019-04-30 | 2020-11-17 | 上海梅山钢铁股份有限公司 | Analysis method for flow characteristics of flow field in multi-flow continuous casting tundish |
| CN111950107B (en) * | 2019-04-30 | 2024-06-04 | 上海梅山钢铁股份有限公司 | Method for analyzing flow characteristics of flow field in multi-stream continuous casting tundish |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103567410A (en) | Process for controlling center porosity of large and round continuous casting billet | |
| CN101733373A (en) | Submerged nozzle for sheet billet continuous casting crystallizer | |
| CN103962517B (en) | A kind of apparatus for pouring of die casting electrode bar and pouring procedure thereof | |
| CN208628416U (en) | A dual-flow slab tundish flow control element | |
| CN201410547Y (en) | Continuous casting tundish current stabilizer with platform structure | |
| CN203565812U (en) | Tundish flow stabilizer | |
| CN201702360U (en) | Steel ladle with slope-shaped ladle bottom | |
| CN201565600U (en) | Submerged nozzle for thin slab continuous casting mold | |
| CN201455253U (en) | A new type of steel water tank nozzle seat brick | |
| CN205888052U (en) | A ventilative type slag retaining wall that is used for package impact zone in middle of continuous casting | |
| CN201455252U (en) | A Submerged Nozzle for Medium and Thin Slab Continuous Casting | |
| CN204997056U (en) | Middle current stabilizer of guaranteeing serviceability of T type continuous casting | |
| CN204799939U (en) | Immersion nozzle structure | |
| CN107385152A (en) | A kind of 260 tons of ladle Double bottoms blow location arrangements | |
| CN203197234U (en) | Continuous-casting porous stopper rod | |
| CN102764867B (en) | Straight-through submerged nozzle with stirring effect | |
| CN103658629A (en) | Molten steel argon blowing and pouring method | |
| CN205096528U (en) | Middle novel roll sediment brick cup of preventing of guaranteeing serviceability of continuous casting | |
| CN104999044B (en) | A kind of continuous cast mold constant-current stabilizer | |
| CN208628417U (en) | A single-flow slab tundish flow control element | |
| CN204108297U (en) | A kind of tundish current stabilizer | |
| CN211161910U (en) | FTSC thin slab continuous casting high flux immersion nozzle | |
| CN103252465B (en) | A kind of turbulence inhibitor for asymmetric continuous casting production | |
| CN218460855U (en) | High-temperature smelting molten steel flow stabilizer | |
| CN202278182U (en) | Slag discharging controller of aluminum-carbon ladle for continuous casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: Capital Iron & Steel General Company |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100224 |