CN202684061U - Tundish molten steel buffer device - Google Patents
Tundish molten steel buffer device Download PDFInfo
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- CN202684061U CN202684061U CN 201220353836 CN201220353836U CN202684061U CN 202684061 U CN202684061 U CN 202684061U CN 201220353836 CN201220353836 CN 201220353836 CN 201220353836 U CN201220353836 U CN 201220353836U CN 202684061 U CN202684061 U CN 202684061U
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- molten steel
- tundish
- opening
- buffer device
- end opening
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Abstract
The utility model relates to a tundish molten steel buffer device, which is mounted at the bottom of a tundish directly below a long molten steel opening of a steel ladle. The tundish molten steel buffer device is characterized in that the outer wall of the buffer device is in a rectangular elliptic barrel structure; the central inner walls of the buffer device are concentric elliptic openings communicated up and down; and an elliptic shape of the lower opening is larger than that of the upper opening; joints from the bottom to the lower opening and from the lower opening to the upper opening are in arc transition; and side holes are formed in both side walls of the elliptic lower opening respectively in a long shaft direction. After molten steel is filled in the buffer device and is in contact with the bottom and the inner walls of the upper opening and the lower opening, the kinetic energy of steel flow is gradually reduced, so that the upward kinetic energy and the upward speed of the molten steel are reduced, and the impact force is remarkably reduced. Therefore, an ''eye circle'' is prevented from being formed on the melting surface of the tundish, and the secondary oxidation and the slag entrapment of the molten steel are reduced.
Description
Technical field
The utility model belongs to the metallurgical continuous casting technical field, is specifically related to a kind of Metal in Tundish buffer unit.
Background technology
The continuous casting tundish is a transitional container between ladle and the crystallizer.Its major function is: the molten steel that storage, shunting ladle inject, reduce ferrostatic pressure and removal of inclusions.In casting process, can bring following problem from the beam of ladle:
(1) speed is high, and kinetic energy is large, and is serious to the impact of tundish bottom working lining, can significantly reduce tundish service life;
(2) the ladle beam is equivalent to " jet pump ", if seal bad meeting surrounding air is involved in molten steel, and breaking becomes the very little bubble of diameter, forms additional circulation, increases the weight of the secondary oxidation of molten steel;
(3) the ladle beam enters the impact zone of tundish, is the zone of a high turbulence, causes tundish molten steel face to form " eyelet ", causes the secondary oxidation of molten steel and middle cinder inclusion to be involved in.
For above problem, common solution has following several at present:
The problem of (1) in order to solve the molten steel beam tundish bottom working lining being impacted; common way is to install a shock plate additional in the tundish impact area bottom with protection tundish bottom working lining, such as " long-service-life double-station impact plate of continuous casting tundish " of patent No. CN201020691022.4 at present.
(2) in order to solve the problems such as secondary oxidation that the molten steel flow at high speed brings and slag, method commonly used is to use the turbulent flow suppressor of various shapes, it returns self after not only can making molten steel inject tundish by long nozzle again, thereby reduce the tubulence energy in tundish beam district, suppress surperficial slag, and can also prolong the time of staying of molten steel in tundish, be conducive to the come-up of field trash.In addition, turbulent flow suppressor weakens the ladle beam in addition to the washing away of tundish impact area cylinder-packing refractory material, and improves the tundish effect in service life.Be CN03211065.0 " turbulence controller for continuous casting middle ladle " such as the patent No., the patent No. is " a kind of tundish turbulence controller " of CN201020147751.3 etc.
But above these methods are so that the tundish internal structure is complicated, and it is large to add moulding in man-hour difficulty, and cost of manufacture is high, wastes time and energy when installing and using, and are unfavorable for on-the-spot applying.In addition, the device that has can not be protected the sidewall of tundish effectively, can reduce the service life of tundish and molten steel is formed secondary pollution.
Summary of the invention
The technical problems to be solved in the utility model is: for above-mentioned deficiency, provide a kind of molten steel beam that can prevent that the tundish bottom is impacted, can effectively reduce again the Metal in Tundish buffer unit of molten steel tubulence energy and flow velocity.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The Metal in Tundish buffer unit, be installed in the tundish bottom under the ladle long nozzle, it is characterized in that: this device outer wall is rectangle ellipticity tube structure, and center inner wall is the concentration ellipse shape opening that is communicated with up and down, and the end opening ellipse is greater than ellipse suitable for reading; All curved transition of junction suitable for reading are arrived to end opening and end opening in the bottom; The end opening ellipse is respectively opened a side opening in the two side of long axis direction.
By technique scheme, described device adopts anti-erosion of refractory to make.
By technique scheme, the oval axial ratio of each of device is 1.1:1 ~ 1.3:1.
By technique scheme, end opening oval-shaped same axial length oval and suitable for reading is than being 1.1:1 ~ 1.2:1.
By technique scheme, described side opening diameter is 30 ~ 50mm.
By technique scheme, the thick 100 ~ 150mm in the bottom of cylindrical shell.
After this device is made, be installed in the tundish bottom under the ladle long nozzle, toast drying for standby with liner in dundish.
After adopting this device, after the molten steel of ladle injects this device by tundish, after running into the inwall of bottom and upper and lower opening, the kinetic energy of steel stream is decayed gradually, thereby reduce kinetic energy and speed that molten steel makes progress, impulsive force obviously descends, and prevents the formation of pouring basket liquid level " eyelet ", reduces secondary oxidation and the slag of molten steel.
With respect to prior art, the utlity model has following beneficial effect:
(1). tundish bottom shock plate and turbulent flow suppressor unite two into one, and can prevent the molten steel beam to the impact of tundish bottom, improve tundish service life, have again good anti-turbulence effects;
(2) anti-turbulence effects is good, can effectively reduce secondary oxidation and the slag of molten steel;
(3). simple in structure, cost of manufacture is low, and is easy for installation.
Description of drawings
Fig. 1 is apparatus structure schematic diagram of the present invention (top view);
Fig. 2 is the A-A cutaway view (major axis is analysed and observe) of Fig. 1;
Fig. 3 is the B-B cutaway view (minor axis is analysed and observe) of Fig. 1;
The Reference numeral correspondence is as follows among each figure: bottom 1, side opening 2, end opening 3, suitable for reading 4.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Such as Fig. 1-3, the Metal in Tundish buffer unit according to the technical solution of the utility model is implemented is installed under the ladle long nozzle, the rectangular ellipticity tube structure of outer wall, and bottom 1 thick about 100 ~ 150mm of cylindrical shell mainly plays shock plate;
Structure according to the tundish inner chamber is different, and the axial ratio of device is about 1.1:1 ~ 1.3:1, and the center of cylindrical shell arranges the concentration ellipse shape opening that is communicated with up and down, and end opening 3 is greater than suitable for reading 4; End opening 3 and suitable for reading 4 same axial length ratio are about 1.1:1 ~ 1.2:1; Bottom 1 is to all curved transition of junction of end opening 3 and end opening 3 to suitable for reading 4, and anti-turbulence effects is good, can effectively reduce secondary oxidation and the slag of molten steel;
End opening 3 is respectively opened side opening 2(such as Fig. 2 and 3 that a diameter is about 30 ~ 50mm in the two side of long axis direction), the effect one in this hole is the residual steel amount of this device inside when reducing the casting end, the 2nd, increase the scope of molten steel flow to improve the uniformity of molten steel temperature in tundish field.
This device adopts anti-erosion of refractory to make.
After this device is made, be installed in the tundish bottom under the ladle long nozzle, toast drying for standby with liner in dundish;
In addition, the operation of other continuous casting is identical with routine operation.
After adopting this device, after the molten steel of ladle injects this device by tundish, after running into the inwall of bottom 1 and upper and lower opening, the kinetic energy of steel stream is decayed gradually, thereby reduce kinetic energy and speed that molten steel makes progress, impulsive force obviously descends, and prevents the formation of pouring basket liquid level " eyelet ", reduces secondary oxidation and the slag of molten steel.
Claims (6)
1. Metal in Tundish buffer unit, be installed in the tundish bottom under the ladle long nozzle, it is characterized in that: this device outer wall is rectangle ellipticity tube structure, and center inner wall is the concentration ellipse shape opening that is communicated with up and down, and the end opening ellipse is greater than ellipse suitable for reading; All curved transition of junction suitable for reading are arrived to end opening and end opening in the bottom; The end opening ellipse is respectively opened a side opening in the two side of long axis direction.
2. device according to claim 1 is characterized in that described device adopts anti-erosion of refractory to make.
3. device according to claim 1 and 2 is characterized in that each oval axial ratio of device is 1.1:1 ~ 1.3:1.
4. device according to claim 3 is characterized in that end opening oval-shaped same axial length oval and suitable for reading is than being 1.1:1 ~ 1.2:1.
5. according to claim 1 and 2 or 4 described devices, it is characterized in that described side opening diameter is 30 ~ 50mm.
6. device according to claim 5 is characterized in that the thick 100 ~ 150mm in bottom of cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353836 CN202684061U (en) | 2012-07-20 | 2012-07-20 | Tundish molten steel buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353836 CN202684061U (en) | 2012-07-20 | 2012-07-20 | Tundish molten steel buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202684061U true CN202684061U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220353836 Expired - Fee Related CN202684061U (en) | 2012-07-20 | 2012-07-20 | Tundish molten steel buffer device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202684061U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562446A (en) * | 2016-08-02 | 2019-04-02 | 蒂森克虏伯钢铁欧洲股份公司 | Buffer, the equipment for casting metal melt and the method for casting metal melt |
| CN115041672A (en) * | 2022-06-16 | 2022-09-13 | 山东钢铁股份有限公司 | Tundish turbulence controller, installation method and argon blowing method for steel for pipeline |
-
2012
- 2012-07-20 CN CN 201220353836 patent/CN202684061U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562446A (en) * | 2016-08-02 | 2019-04-02 | 蒂森克虏伯钢铁欧洲股份公司 | Buffer, the equipment for casting metal melt and the method for casting metal melt |
| CN109562446B (en) * | 2016-08-02 | 2021-09-24 | 蒂森克虏伯钢铁欧洲股份公司 | Buffer, device for casting molten metal and method for casting molten metal |
| CN115041672A (en) * | 2022-06-16 | 2022-09-13 | 山东钢铁股份有限公司 | Tundish turbulence controller, installation method and argon blowing method for steel for pipeline |
| CN115041672B (en) * | 2022-06-16 | 2023-12-19 | 山东钢铁股份有限公司 | Tundish turbulence controller, installation method and argon blowing method for pipeline steel |
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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: 20130123 Termination date: 20170720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |