CN2578013Y - Anti-vortex impact pad for continuous casting bakie - Google Patents
Anti-vortex impact pad for continuous casting bakie Download PDFInfo
- Publication number
- CN2578013Y CN2578013Y CN02284182U CN02284182U CN2578013Y CN 2578013 Y CN2578013 Y CN 2578013Y CN 02284182 U CN02284182 U CN 02284182U CN 02284182 U CN02284182 U CN 02284182U CN 2578013 Y CN2578013 Y CN 2578013Y
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- CN
- China
- Prior art keywords
- continuous casting
- molten steel
- impact pad
- steel
- turbulent flow
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- Expired - Lifetime
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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
- B22D41/003—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with impact pads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model discloses a turbulence preventing impact pad for a continuous casting bakie. The impact pad is provided with a refractory vessel body of a big steeling flow impact area arranged at the bottom part of the bakie. The inner surface of the refractory vessel body used for containing melting steel is formed by the order smooth connection of a cambered inner bottom face, a concave spherical surface, and an inner cylindrical surface, wherein, the middle part of the cambered inner bottom face is upwards projected, and the cambered inner bottom face can bear the impact of the melting steel; the concave spherical surface is formed by that the periphery of the cambered inner bottom face is upwards, outwards and inwards extended; the inner cylindrical surface is formed by that the upper edge of concave spherical surface is upwards extended to the upper surface of the refractory vessel body. The utility model has the advantages that the steel slag splash and the melting steel turbulence can be effectively controlled, the equipment of a pouring area can be prevented from sticking steel and slag, the melting steel purity is enhanced, and the personal safety of operators can be ensured.
Description
Technical field
The utility model relates in the steel-making industry for improve the appurtenances that steel quality is provided with in the continuous casting tundish, refers to that particularly a kind of continuous casting tundish prevents the turbulent flow impact pad.
Background technology
Continuous casting tundish in the steel-making industry is when work, bearing and unwrapping the huge heat energy and the kinetic energy impact of molten steel stream of watering greatly, not only can produce serious slag splash phenomena, cause pouring area equipment steel bonding dry slag, shorten service life of equipment, and serious molten steel turbulent flow phenomenon can take place, can't guarantee steel quality, also easily burn simultaneously and water the steel operative employee, very dangerous.At first, the corresponding safeguard procedures that most steel mills are taked all are the impact-resistant panels of laying the one flat plate formula at continuous casting tundish bottom steel stream impact zone, but this impact-resistant panels only is the flat board of being made by refractory material, can only play general shock-resistant effect in the continuous casting tundish.Recently, people have developed a kind of three-dimensional impact-resistant panels, it has the refractory container body of an abnormity, the inner surface of this refractory container body is upwards also inwardly formed by the certain angle angled side walls by impact-resistant base plane with around base plane, sidewall extends upward the inlet that forms molten steel stream, molten steel stream enters in the three-dimensional impact-resistant panels by this mouthful, flows in the continuous casting tundish by this mouthful after the buffering refraction again.Though this three-dimensional impact-resistant panels has been alleviated the flow velocity of unwrapping molten steel when watering greatly to a certain extent, changed its flow direction, but molten steel stream is impacted the sputter that is produced and is still happened occasionally, the impact zone of continuous casting tundish still can form very big turbulent flow, when particularly pulling rate was high, the turbulent flow phenomenon was even more serious.This successional rapid turbulent flow exists following defective: one, and the surperficial liquid slag layer that breaks through easily in the continuous casting tundish is involved in the molten steel slag, and the contact surface of increase molten steel and air is long-pending, causes the aggravation of molten steel secondary oxidation, and steel quality reduces; Its two, easily the sprayed coating to the continuous casting tundish is that liner causes serious washing away, and has not only reduced the service life of liner, but also refractory material can be involved in the molten steel, causes molten steel to pollute, purity descends.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of slag of effectively controlling to splash with the molten steel turbulent flow, avoid pouring area equipment steel bonding dry slag, improve molten steel purity and can guarantee the anti-turbulent flow impact pad of the safe continuous casting tundish of operative employee's person.
For realizing this purpose, the anti-turbulent flow impact pad of continuous casting tundish that the utility model is designed, have a refractory container body that is installed in the big Baogang in tundish bottom stream impact zone, the inner surface that this refractory container body is used to hold molten steel is that upwards outwards extend internally again formed concave spherical surface and top edge from above-mentioned concave spherical surface of the arc inner bottom surface that impacted by the ability molten steel that a centre raises up, periphery from above-mentioned arc inner bottom surface extends to vertically upward that the formed inner cylinder face of refractory container body upper surface is slick and sly successively to be formed by connecting.
Advantage of the present utility model is: the arc inner bottom surface of designed impact pad inner surface can be dissolved big Bao Zhuliu molten steel effectively and open impact kinetic energy when watering, can prolong the holdup time of molten steel effectively around the annular concave spherical surface of arc inner bottom surface periphery, and can keep molten steel steadily to overflow effectively at the less inner cylinder face of concave spherical surface top bore, the three combines and be very beneficial for the molten steel circulation that reflects, refluxes, overturns in the impact pad inner surface, thereby consumed most kinetic energy of molten steel, reduced molten steel and overflowed the speed that flows into the continuous casting tundish.Like this, both can reduce molten steel open when watering splash, avoid pouring area equipment steel bonding dry slag, ensure safety in production and the continuous casting operation normal, can eliminate the turbulent flow of molten steel again, promote the inclusion floating in the molten steel to separate, the steady ripple disable of molten steel liquid level, isolated molten steel contacts with air, improves the cleanliness factor of molten steel.
Description of drawings
Fig. 1 is the structural representation of the anti-turbulent flow impact pad of a kind of continuous casting tundish;
Fig. 2 is that the B of Fig. 1 is to structural representation.
The specific embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail:
Continuous casting tundish shown in the figure is prevented the turbulent flow impact pad, has a refractory container body 1 that is installed in the big Baogang in tundish bottom stream impact zone.This refractory container body 1 be shaped as a hexahedron, its outer surface comprises six sidewalls 8, opening upper surface 5 and outer bottom 6, two wherein relative sidewall 8 bottoms are provided with little oblique pin 7, so that impact pad installs and fixes.The inner surface 9 that this refractory container body 1 is used to hold molten steel is connected to form by following three parts slyness successively: the arc inner bottom surface 2 that the ability molten steel that a part raises up in the middle of being impacts, and it has the effect that reduces steel stream impact kinetic energy; A part is the formed concave spherical surface 3 that upwards outwards extends internally again of the periphery from arc inner bottom surface 2, and it has the effect that prolongs the steel stream holdup time, eliminates turbulent flow; A part is that the top edge from concave spherical surface 3 extends to upper surface 5 formed inner cylinder faces 4 vertically upward, and it has the effect of stabilized steel stream.On the concave spherical surface 3 of inner surface 9, also be provided with a pair of tap hole 10 that leads to outside the refractory container body 1, the effect of tap hole 10 has 3 points: one, can reduce and unwrap the stream of high-speed steel when watering and arc inner bottom surface 2 greatly and collide upwards refraction stream that the back produced strand, and reduce the flow velocity that molten steel overflows from opening part the washing away of concave spherical surface 3 and inner cylinder face 4; Its two, can alleviate the slag emulsion reaction that in inner surface 9 limited cavity volume, is produced, improve molten steel purity, this is unwrapping greatly when watering, and is particularly evident under the situation that liquid level is low, slag is more; Its three, can under limit, make fraction steel this tap hole 10 of flowing through enter the continuous casting tundish, help that inclusion floating is separated and the even distribution of molten steel temperature field.These tap hole 10 preferred acclivitous designs, itself and horizontal angle are advisable between 10～20 °, are preferably 15 °, and above-mentioned like this effect and effect are more superior.Above-mentioned inner surface 9 can design and be the sub-elliptical shape, this sub-elliptical body one side consistent with its long axis direction is made of to straightway 9c straightway 9a, another side is made of to arc 9d arc 9b, and its major axis is parallel with the longitudinal axis of continuous casting tundish during installation.Why design like this, its purpose is to comply with big bag cast steel water and opens movement locus when watering, more help the molten steel circulation that in inner surface 9, reflects, refluxes, overturns, prolong the time of staying, make from the molten steel of inner surface 9 openings inflow continuous casting tundish more at the uniform velocity steady, thereby change the distribution in molten steel temperature field in the continuous casting tundish, make it more evenly rationally, and then promote the field trash in the molten steel effectively to separate with it.By test of water mould and the above-mentioned as can be known design of pilot scale to inner surface 9 is preferred.
During the utility model work, molten steel 21 is injected the anti-turbulent flow impact pad of continuous casting tundish bottom from big bag, impact the arc inner bottom surface 2 of its inner surface 9, and in inner surface 9, reflect along concave spherical surface 3 and inner cylinder face 4, reflux, upset (is used fringence 22 among the figure, return wire 23, tipping line 24 has been expressed the movement locus of molten steel visually), by molten steel circulating in inner surface 9, consume the kinetic energy of steel stream, make it enter tundish from inner surface 9 suitable for reading overflowing with lower flow velocity, both not had molten steel splashes, there is not the molten steel turbulent flow again, and the molten steel liquid level is steady, and inclusion floating is separated smoothly.Show after tested: the nitrogen oxygen content in the gained molten steel reduces, and molten steel purity significantly improves, and final slab quality improves significantly.
Claims (5)
1. a continuous casting tundish is prevented the turbulent flow impact pad, have a refractory container body (1) that is installed in the big Baogang in tundish bottom stream impact zone, it is characterized in that: the inner surface (9) that this refractory container body (1) is used to hold molten steel is the arc inner bottom surface (2) that is impacted by the ability molten steel that a centre raises up, periphery formed concave spherical surface (3) that upwards outwards extends internally again from arc inner bottom surface (2), the formed inner cylinder face of upper surface (5) (4) that extends to refractory container body (1) vertically upward with a top edge from concave spherical surface (3) is slick and sly successively to be formed by connecting.
2. continuous casting tundish according to claim 1 is prevented the turbulent flow impact pad, it is characterized in that: the concave spherical surface (3) of said inner surface (9) is provided with and leads to the outer tap hole (10) of refractory container body (1).
3. continuous casting tundish according to claim 2 is prevented the turbulent flow impact pad, it is characterized in that: said tap hole (10) is inclined upwardly and horizontal angle is 10～20 °.
4. continuous casting tundish according to claim 3 is prevented the turbulent flow impact pad, it is characterized in that: said tap hole (10) is inclined upwardly and horizontal angle is 15 °.
5. according to claim 1 or the anti-turbulent flow impact pad of 2 or 3 or 4 described continuous casting tundish, it is characterized in that: said inner surface (9) sub-elliptical shape, this sub-elliptical body one side consistent with its long axis direction is made of to straightway (9c) straightway (9a), and another side is made of arc (9b) to arc (9d).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02284182U CN2578013Y (en) | 2002-11-14 | 2002-11-14 | Anti-vortex impact pad for continuous casting bakie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02284182U CN2578013Y (en) | 2002-11-14 | 2002-11-14 | Anti-vortex impact pad for continuous casting bakie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578013Y true CN2578013Y (en) | 2003-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02284182U Expired - Lifetime CN2578013Y (en) | 2002-11-14 | 2002-11-14 | Anti-vortex impact pad for continuous casting bakie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578013Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389954A (en) * | 2011-11-08 | 2012-03-28 | 莱芜钢铁股份有限公司 | Continuous casting tundish turbulence controller |
| CN103339431A (en) * | 2010-12-03 | 2013-10-02 | 阿杰伊·尚德 | Turbulence free ring |
| CN103397196A (en) * | 2013-08-03 | 2013-11-20 | 郭自刚 | Refining apparatus and technology of pressure casting aluminium product |
| WO2016058072A1 (en) * | 2014-10-14 | 2016-04-21 | Saint-Gobain do Brasil Produtos Industriais e para Construção Ltda. | Turbulence reducer with inner concavity |
| CN107073574A (en) * | 2014-08-15 | 2017-08-18 | 安赛乐米塔尔研究与发展有限责任公司 | Impact pad includes the cast disk and equipment and its application method of impact pad |
| WO2018069753A1 (en) * | 2016-10-10 | 2018-04-19 | I.P.C. Refractories, Spol. S R.O. | A method of molten metal casting utilizing an impact pad in the tundish |
| CN110653366A (en) * | 2019-11-18 | 2020-01-07 | 武汉科技大学 | Continuous casting tundish belt buffering ball cyclone type turbulence suppressor |
| CN112207268A (en) * | 2020-10-21 | 2021-01-12 | 武汉钢铁有限公司 | Circular vortex-resisting device for bottom of steel ladle |
-
2002
- 2002-11-14 CN CN02284182U patent/CN2578013Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103339431B (en) * | 2010-12-03 | 2016-06-08 | 阿杰伊·尚德 | Turbulence free ring |
| CN103339431A (en) * | 2010-12-03 | 2013-10-02 | 阿杰伊·尚德 | Turbulence free ring |
| CN102389954B (en) * | 2011-11-08 | 2014-09-03 | 山东钢铁股份有限公司 | Continuous casting tundish turbulence controller |
| CN102389954A (en) * | 2011-11-08 | 2012-03-28 | 莱芜钢铁股份有限公司 | Continuous casting tundish turbulence controller |
| CN103397196B (en) * | 2013-08-03 | 2015-12-23 | 福安市广源机电有限公司 | One waters die casting aluminium product a refining unit and technique thereof |
| CN103397196A (en) * | 2013-08-03 | 2013-11-20 | 郭自刚 | Refining apparatus and technology of pressure casting aluminium product |
| CN107073574A (en) * | 2014-08-15 | 2017-08-18 | 安赛乐米塔尔研究与发展有限责任公司 | Impact pad includes the cast disk and equipment and its application method of impact pad |
| CN107073574B (en) * | 2014-08-15 | 2020-06-26 | 安赛乐米塔尔研究与发展有限责任公司 | Impact pad, casting tray and apparatus including impact pad, and method of using same |
| WO2016058072A1 (en) * | 2014-10-14 | 2016-04-21 | Saint-Gobain do Brasil Produtos Industriais e para Construção Ltda. | Turbulence reducer with inner concavity |
| WO2018069753A1 (en) * | 2016-10-10 | 2018-04-19 | I.P.C. Refractories, Spol. S R.O. | A method of molten metal casting utilizing an impact pad in the tundish |
| CN110267753A (en) * | 2016-10-10 | 2019-09-20 | Ipc耐火材料公司 | Utilize the method for the molten metal casting of the impact pad in tundish |
| CN110653366A (en) * | 2019-11-18 | 2020-01-07 | 武汉科技大学 | Continuous casting tundish belt buffering ball cyclone type turbulence suppressor |
| CN110653366B (en) * | 2019-11-18 | 2024-05-28 | 武汉科技大学 | Spiral-flow type turbulence inhibitor for continuous casting middle belting buffer ball |
| CN112207268A (en) * | 2020-10-21 | 2021-01-12 | 武汉钢铁有限公司 | Circular vortex-resisting device for bottom of steel ladle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121114 Granted publication date: 20031008 |