CN215468053U - Continuous casting tundish capable of improving purity of molten steel - Google Patents
Continuous casting tundish capable of improving purity of molten steel Download PDFInfo
- Publication number
- CN215468053U CN215468053U CN202121248924.5U CN202121248924U CN215468053U CN 215468053 U CN215468053 U CN 215468053U CN 202121248924 U CN202121248924 U CN 202121248924U CN 215468053 U CN215468053 U CN 215468053U
- Authority
- CN
- China
- Prior art keywords
- molten steel
- cavity
- dam
- wall
- impact
- 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.)
- Active
Links
Images
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model discloses a continuous casting tundish capable of improving molten steel purity, which comprises a ladle body and a ladle cover, wherein the cross section of the ladle body is circular, the inner space of the ladle body is a mixing cavity, two opposite side walls of the ladle body are symmetrically provided with an impact cavity, a long water gap is arranged on the ladle cover above the impact cavity, a slag blocking wall is arranged at the joint of the impact cavity and the mixing cavity, the lower part of the slag blocking wall is provided with a central diversion hole and an edge diversion hole, the side wall of the ladle body is provided with a pouring cavity, the side wall of the ladle body opposite to the pouring cavity is provided with an electromagnetic stirrer, the bottom of the pouring cavity is provided with a molten steel water outlet, a dam is arranged on the inner wall of the ladle body at the joint of the pouring cavity and the mixing cavity, the dam comprises a middle dam and inclined dams symmetrically arranged at two sides of the middle dam, and a liquid through hole is processed at the lower end of the middle dam. The utility model has reasonable structure, can eliminate the dead zone of molten steel, has good molten steel purification capacity and has obvious economic value and social value.
Description
Technical Field
The utility model relates to the technical field of steelmaking equipment, in particular to a continuous casting tundish capable of improving the purity of molten steel.
Background
The continuous casting tundish is a refractory container used in steelmaking, receives molten steel poured from a ladle when in use, and then distributes the molten steel into each crystallizer through a tundish nozzle for continuous casting, is an intermediate link of a steelmaking production flow, is a joint point which is changed from intermittent operation to continuous operation, and is an important link for improving the yield and the quality of special steel. Generally, the continuous casting tundish plays roles of shunting, continuous casting, pressure reduction, protection and impurity removal, the continuous casting tundish is mainly required to play roles of shunting, continuous casting and pressure reduction in general steel production enterprises, the tundish plays roles of protecting and removing impurities from molten steel in special steel production enterprises, the maximum metallurgical effect is exerted as much as possible, the molten steel in the tundish is reduced from being polluted by the outside, the flowing condition of the molten steel is improved, and particles of non-metallic inclusions in the steel are removed as much as possible when the particles are in a liquid state, so that the purity of the molten steel is improved, namely, short-circuit flow is prevented, dead zones are reduced, the streamline direction is improved, the stay time of the molten steel is prolonged, the temperature of the molten steel is controlled, and the superheat degree of the molten steel is kept stable.
In summary, in order to prolong the flowing distance of the molten steel in the tundish and increase the residence time of the molten steel in the tundish, the floating removal of impurities and the capturing of impurities by top slag are facilitated, guide plates in various forms are arranged in the tundish, so that the molten steel on the upper part of the guide plate can flow sufficiently, but the molten steel on the lower part of the guide plate can form a dead zone, particularly the part far away from a pouring zone of a ladle long nozzle is more obvious, the temperature of the molten steel on the part has no chance of being sufficiently uniform, the impurities in the molten steel have no chance of colliding and being bonded into large particles to float upwards and be removed, and the dead zone of the molten steel in the tundish can influence the impurity removal effect of the molten steel in the tundish, and the requirements of improving the purity, high homogenization and stability of the molten steel cannot be met; secondly, the impact area in the conventional continuous casting tundish is smaller, and the molten steel storage capacity is smaller, so that the problems of less floating time of impurities in molten steel in the impact area and limited molten steel purification capacity are caused, and the requirement of improving the purity of the molten steel cannot be well met; finally, the practical discovery shows that the reaming phenomenon of the flow guide holes arranged on the flow guide plate is obvious, and the flow guide effect is lost. Therefore, the development of a continuous casting tundish which has reasonable structure arrangement, can eliminate the dead zone of molten steel and has good molten steel purification capacity and can improve the purity of the molten steel is objectively needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a continuous casting tundish which has reasonable structure arrangement, can eliminate molten steel dead zones, has good molten steel purification capacity and can improve the purity of molten steel.
The utility model aims to realize the purpose, which comprises a bag body and a bag cover, wherein the cross section of the bag body is circular, the inner space of the bag body is a mixing cavity, two opposite side walls of the bag body are symmetrically provided with an impact cavity, the bag cover above the impact cavity is provided with a long water gap, a slag wall is arranged at the joint of the impact cavity and the mixing cavity, the height of the slag wall is the same as that of the bag body, the center of the lower part of the slag wall is provided with a central diversion hole, the lower parts of the slag walls at two sides of the central diversion hole are symmetrically provided with two edge diversion holes, the two edge diversion holes are respectively arranged obliquely and outwards, the side wall of the bag body is provided with a pouring cavity, the side wall of the bag body opposite to the pouring cavity is provided with an electromagnetic stirrer, the connecting line between the pouring cavity and the electromagnetic stirrer is vertical to the connecting line between the two impact cavities, the bottom of the pouring cavity is provided with a molten steel water outlet, the bag cover above the molten steel water outlet is provided with a stopper rod, the liquid filling device is characterized in that a dam is arranged on the inner wall of the bag body at the joint of the pouring cavity and the mixing cavity, the height of the dam is the same as that of the bag body, the dam comprises a middle dam and inclined dams symmetrically arranged on two sides of the middle dam, the edges of the inclined dams are fixed on the side wall of the bag body, and liquid through holes are processed at the lower end of the middle dam.
Furthermore, the edge of the inclined dam and the side wall of the bag body are in smooth transition.
Furthermore, the thickness of the lower part of the slag-stopping wall is larger than that of the upper part, and the central flow guide hole and the edge flow guide hole are both positioned at the lower part of the slag-stopping wall.
Furthermore, the thickness of the lower part of the slag retaining wall is 1.5-2 times of that of the upper part.
Further, a flow stabilizer is arranged at the bottom of the impact cavity below the long nozzle.
Further, the current stabilizer comprises a cone and a base, the upper port of the cone is large, the lower port of the cone is small, the lower port of the cone is fixed at the edge of the upper end face of the base, and the lower end face of the base is fixed at the bottom of the impact cavity.
When the utility model is used, molten steel is simultaneously injected into two impact cavities of the tundish through the long nozzle from the ladle, under the blocking action of the slag-stopping wall, the molten steel in the impact cavity can only flow out from the central diversion hole and the edge diversion holes, wherein the molten steel flowing out of the central diversion hole flows to the center of the ladle body, the molten steel flowing out of the two edge diversion holes flows to the two sides, the molten steel flowing out of the two impact cavities flows in opposite directions, the two molten steel flows in opposite directions in the mixing cavity and finally converge and impact each other in the middle of the mixing cavity, and during the continuous impact and mixing process of the molten steel, the dead zone of the molten steel is reduced, the components and the temperature of the molten steel are homogenized, the fully and uniformly mixed molten steel flows into a pouring cavity from a liquid through hole arranged at the bottom of the dam, and finally the molten steel is discharged from a molten steel outlet to a crystallizer to carry out the subsequent continuous casting process. Compared with the traditional structure, the impact cavity is specially provided, so that the molten steel storage capacity of the impact cavity is larger, the floating time of inclusions in the molten steel can be prolonged, and the purification capacity of the molten steel is improved; secondly, molten steel impacts each other in the mixing cavity to obtain better flowing and mixing effects, and the dead zone is smaller; in addition, the electromagnetic stirrer is arranged on the outer wall of the ladle body, so that the molten steel in the mixing cavity can be stirred transversely, the molten steel can be fully stirred under the action of transverse electromagnetic force, dead zones of the molten steel are further avoided, the circulating flow of the molten steel in the mixing cavity can be promoted, the homogenization degree of the temperature of the molten steel is improved, meanwhile, collision among inclusions in the molten steel is promoted, aggregation and growth are promoted, then, the molten steel floats upwards to remove the inclusions, and the purity of the molten steel is improved. The utility model has reasonable structure, can eliminate the dead zone of molten steel, has good molten steel purification capacity and has obvious economic value and social value.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;
FIG. 3 is a schematic structural view of a slag dam 6 according to the present invention;
in the figure: 1-bag body, 2-bag cover, 3-mixing cavity, 4-impact cavity, 5-long nozzle, 6-slag wall, 7-central diversion hole, 8-edge diversion hole, 9-pouring cavity, 10-electromagnetic stirrer, 11-molten steel outlet, 12-stopper rod, 13-middle dam, 14-inclined dam, 15-liquid through hole, 16-current stabilizer, 17-cone and 18-base.
Detailed Description
The present invention is further described with reference to the drawings, but the present invention is not limited thereto in any way, and any modification or improvement based on the present invention is within the protection scope of the present invention.
As shown in fig. 1 to 3, the utility model comprises a bag body 1 and a bag cover 2, the cross section of the bag body 1 is circular, compared with the rectangular structure and the like, the circular bag body 1 is beneficial to the smooth flow of molten steel in the bag body, the dead zone at the corner is reduced, the inner space of the bag body 1 is a mixing cavity 3, two opposite side walls of the bag body 1 are symmetrically provided with an impact cavity 4, a long water gap 5 is arranged on the bag cover 2 above the impact cavity 4, a slag wall 6 is arranged at the joint of the impact cavity 4 and the mixing cavity 3, the height of the slag wall 6 is the same as that of the bag body 1, the center of the lower part of the slag wall 6 is provided with a central diversion hole 7, two edge diversion holes 8 are symmetrically arranged at the lower part of the slag wall 6 at two sides of the central diversion hole 7, the two edge diversion holes 8 are respectively arranged obliquely and outwards, the number and size of the central diversion hole 7 and the edge diversion hole 8, and the inclination angle of the edge diversion hole 8 can be determined according to the actual needs, the side wall of the bag body 1 is provided with a pouring cavity 9, the side wall of the bag body 1 opposite to the pouring cavity 9 is provided with an electromagnetic stirrer 10, the electromagnetic stirrer 10 is the existing equipment, the essence of the equipment is that the movement of the molten steel is strengthened by means of electromagnetic force induced in the molten steel, specifically, an alternating magnetic field excited by the electromagnetic stirrer penetrates into the molten steel, current is induced in the alternating magnetic field, the induced current interacts with a local magnetic field to generate electromagnetic force, the electromagnetic force is volume force and acts on a molten steel volume element so as to push the molten steel to move, a connecting line between the pouring cavity 9 and the electromagnetic stirrer 10 is vertical to a connecting line between two impact cavities 4, the bottom of the pouring cavity 9 is provided with a molten steel water outlet 11, a stopper rod 12 is arranged on a bag cover 2 above the molten steel water outlet 11, a baffle dam is arranged on the inner wall of the bag body 1 at the connecting part of the pouring cavity 9 and the mixing cavity 3, and the height of the baffle is the dam is the same as that of the bag body 1, the dam comprises a middle dam 13 and inclined dams 14 symmetrically arranged at two sides of the middle dam 13, the inclined dams 14 are used for guiding the flow of molten steel, the edges of the inclined dams 14 are fixed on the side wall of the bag body 1, and liquid through holes 15 are processed at the lower end of the middle dam 13.
When the utility model is used, molten steel is simultaneously poured into two impact cavities 4 of the tundish from a ladle through the long nozzle 5, under the blocking action of the slag-stopping wall 6, the molten steel in the impact cavity 4 can only flow out from the central diversion hole 7 and the edge diversion holes 8, wherein, the molten steel flowing out from the central diversion hole 7 flows to the center of the bag body 1, the molten steel flowing out from the two edge diversion holes 8 flows to the two sides, the molten steel flowing out of the two impact cavities 4 flows in opposite directions, the two molten steel flows in opposite directions in the mixing cavity 3 and finally are converged and impacted with each other in the middle of the mixing cavity 3, and during the continuous impacting and mixing process of the molten steel, the dead zone of the molten steel is reduced, the components and the temperature of the molten steel are homogenized, the fully and uniformly mixed molten steel flows into the pouring cavity 9 from a liquid through hole 15 arranged at the bottom of the dam, and finally the molten steel is discharged to a crystallizer from a molten steel water outlet 11 to carry out the subsequent continuous casting process. Compared with the traditional structure, the utility model is specially provided with the impact cavity 4, the molten steel storage capacity of the impact cavity 4 is larger, the floating time of impurities in the molten steel can be prolonged, and the purification capacity of the molten steel is improved; secondly, the molten steel can obtain better flowing and mixing effects by mutual impact in the mixing cavity 3, and the dead zone is smaller; in addition, the electromagnetic stirrer 10 is arranged on the outer wall of the ladle body 1, so that the molten steel in the mixing cavity 3 can be transversely stirred, the molten steel is fully stirred under the action of transverse electromagnetic force, dead zones of the molten steel are further avoided, the circulating flow of the molten steel in the mixing cavity 3 can be promoted, the homogenization degree of the temperature of the molten steel is improved, meanwhile, collision among inclusions in the molten steel is promoted, the inclusions are gathered and grown up, and then the inclusions are floated and removed, and the purity of the molten steel is improved.
In order to eliminate the molten steel dead zone between the inclined dam 14 and the ladle body 1 as much as possible, the edge of the inclined dam 14 and the side wall of the ladle body 1 are in smooth transition, and the smooth transition is more beneficial to the flowing of the molten steel, so that the dead zone is reduced as much as possible.
The thickness of the lower part of the slag-stopping wall 6 is larger than that of the upper part, the central diversion hole 7 and the edge diversion hole 8 are both positioned at the lower part of the slag-stopping wall 6, and preferably, the thickness of the lower part of the slag-stopping wall 6 is 1.5-2 times of that of the upper part. In the long-term use process of the slag-stopping wall 6, the reaming phenomenon can occur at the positions where the central diversion hole 7 and the edge diversion hole 8 are processed, even the central diversion hole 7 and the edge diversion hole 8 are connected into a big tunnel and lose the diversion effect, therefore, the positions of the slag-stopping wall 6 where the central diversion hole 7 and the edge diversion hole 8 are located are thickened, the reaming time of the diversion holes in use is delayed, the continuous use performance of the diversion holes is improved, and the service life of the whole slag-stopping wall 6 is prolonged.
The bottom of the impact cavity 4 below the long nozzle 5 is provided with a flow stabilizer 16, the flow stabilizer 16 comprises a cone 17 and a base 18, the upper port of the cone 17 is large, the lower port of the cone 17 is small, the lower port of the cone 17 is fixed at the edge of the upper end surface of the base 18, and the lower end surface of the base 18 is fixed at the bottom of the impact cavity 4. The impact of the molten steel injected into the ladle on the bottom of the impact cavity 4 can be buffered and limited through the flow stabilizer 16, the bottom of the impact cavity 4 is prevented from being damaged, and the service life of the impact cavity is prolonged.
Claims (6)
1. The utility model provides a can improve continuous casting pouring basket of molten steel purity, includes inclusion (1) and be built by contract (2), its characterized in that: the cross section of the bag body (1) is circular, the inner space of the bag body (1) is a mixing cavity (3), two opposite side walls of the bag body (1) are symmetrically provided with impact cavities (4), a ladle cover (2) above the impact cavities (4) is provided with a long water gap (5), a slag blocking wall (6) is arranged at the joint of the impact cavities (4) and the mixing cavity (3), the height of the slag blocking wall (6) is the same as that of the bag body (1), the center of the lower part of the slag blocking wall (6) is provided with a central flow guide hole (7), the lower parts of the slag blocking walls (6) at two sides of the central flow guide hole (7) are symmetrically provided with two edge flow guide holes (8), the two edge flow guide holes (8) are respectively arranged obliquely and outwards, the side wall of the bag body (1) is provided with a pouring cavity (9), and the side wall of the bag body (1) opposite to the pouring cavity (9) is provided with an electromagnetic stirrer (10), the connection line between the pouring cavity (9) and the electromagnetic stirrer (10) is perpendicular to the connection line between the two impact cavities (4), a molten steel water outlet (11) is formed in the bottom of the pouring cavity (9), a stopper rod (12) is arranged on the ladle cover (2) above the molten steel water outlet (11), a dam is arranged on the inner wall of the ladle body (1) at the joint of the pouring cavity (9) and the mixing cavity (3), the height of the dam is the same as that of the ladle body (1), the dam comprises a middle dam (13) and inclined dams (14) symmetrically arranged on two sides of the middle dam (13), the edges of the inclined dams (14) are fixed on the side wall of the ladle body (1), and liquid through holes (15) are machined in the lower end of the middle dam (13).
2. The continuous casting tundish capable of improving the purity of molten steel according to claim 1, wherein the edge of the inclined dam (14) is smoothly transited to the side wall of the tundish body (1).
3. The continuous casting tundish capable of improving the purity of molten steel according to claim 1, wherein the thickness of the lower part of the slag-stopping wall (6) is greater than that of the upper part, and the central diversion hole (7) and the edge diversion holes (8) are both positioned at the lower part of the slag-stopping wall (6).
4. The continuous casting tundish capable of improving the purity of molten steel according to claim 3, wherein the thickness of the lower part of the slag-stopping wall (6) is 1.5-2 times of the thickness of the upper part.
5. The continuous casting tundish capable of improving the purity of molten steel according to claim 1, wherein a flow stabilizer (16) is arranged at the bottom of the impact cavity (4) below the long nozzle (5).
6. The continuous casting tundish capable of improving the purity of molten steel according to claim 5, wherein the flow stabilizer (16) comprises a cone (17) and a base (18), the upper port of the cone (17) is larger than the lower port of the cone, the lower port of the cone (17) is fixed at the edge of the upper end surface of the base (18), and the lower end surface of the base (18) is fixed at the bottom of the impact cavity (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121248924.5U CN215468053U (en) | 2021-06-05 | 2021-06-05 | Continuous casting tundish capable of improving purity of molten steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121248924.5U CN215468053U (en) | 2021-06-05 | 2021-06-05 | Continuous casting tundish capable of improving purity of molten steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215468053U true CN215468053U (en) | 2022-01-11 |
Family
ID=79783009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121248924.5U Active CN215468053U (en) | 2021-06-05 | 2021-06-05 | Continuous casting tundish capable of improving purity of molten steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215468053U (en) |
-
2021
- 2021-06-05 CN CN202121248924.5U patent/CN215468053U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201058372Y (en) | Device for controlling flow of ladle | |
| CN104364032A (en) | Method for manufacturing high-purity steel casting, and tundish | |
| CN201950179U (en) | Novel tundish flowing control device for stainless steel continuous casting | |
| CN215919072U (en) | Tundish for bloom | |
| CN104107905A (en) | Slab continuous casting tundish | |
| CN208628416U (en) | A kind of double fluid slab tundish flow control element | |
| CN215468053U (en) | Continuous casting tundish capable of improving purity of molten steel | |
| CN206010143U (en) | A kind of rail aluminum weld running gate system | |
| CN106181023B (en) | A kind of rail aluminum weld running gate system | |
| CN201140273Y (en) | Multifunctional integral flow straightener for pouring box | |
| CN203292439U (en) | Multi-stage shunting type continuous casting immersive nozzle | |
| CN102794445B (en) | Slab continuous casting submersed nozzle | |
| CN213559860U (en) | "Dujiang weir" type multistage bottom cyclone type current stabilizer | |
| CN102300654B (en) | Tundish impact pad | |
| CN202701326U (en) | An improved tundish and improved flow stabilizers for a billet caster | |
| CN201988694U (en) | V-shaped blocking wall suitable for T-shaped and approximately trapezoid-shaped continuous casting tundish | |
| CN210789206U (en) | Large square billet four-flow tundish | |
| CN217412429U (en) | Six-flow tundish capable of improving flow consistency of various flows | |
| CN202910266U (en) | Slab continuous casting submersed nozzle | |
| CN102950275B (en) | Multi-hole continuous-casting submersed nozzle for square and round billets | |
| CN208628417U (en) | A kind of list flowing plate base tundish flow control element | |
| CN106735144A (en) | A kind of tundish for being easy to dismounting and cleaning | |
| CN203292440U (en) | Continuous casting submerged nozzle capable of reducing molten steel impact | |
| CN2663054Y (en) | Flow-stabilizing device for tundish | |
| CN204159857U (en) | Tundish |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |