CN201693166U - Continuous casting tundish turbulence inhibitor - Google Patents
Continuous casting tundish turbulence inhibitor Download PDFInfo
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- CN201693166U CN201693166U CN2010202378712U CN201020237871U CN201693166U CN 201693166 U CN201693166 U CN 201693166U CN 2010202378712 U CN2010202378712 U CN 2010202378712U CN 201020237871 U CN201020237871 U CN 201020237871U CN 201693166 U CN201693166 U CN 201693166U
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Abstract
The utility model belongs to the technical field of steel-making continuous casting tundishes in the metallurgy industry, and mainly relates to a continuous casting tundish turbulence inhibitor. The main body of the tundish turbulence inhibitor is a cylinder, which is provided with a round cavity, and the cavity is of a structure which is gradually reduced and then gradually expanded from the bottom to the opening of the upper end. The height ratio of the expanded section to the reduced section of the cavity is 1.5 to 2.5, the inclination angle Alpha of the wall of the upper part of the cavity is 45 to 75 degrees, and the inclination angle Beta of the wall of the lower part of the cavity is 45 to 75 degrees. The continuous casting tundish turbulence inhibitor not only can inhibit the turbulence of molten steel, but also can improve the flow path of the molten steel in a tundish and promote non-metal impurities to float up, so that the non-metal impurities can be removed.
Description
Technical field
The utility model belongs to metallurgy industry steel-making continuous casting Tundish Technology field, relates generally to a kind of continuous casting tundish and presses down rapid device.
Background technology
Along with the development of continuously casting and continuously rolling technology, more and more higher to the requirement of molten steel cleanliness factor.Tundish is subjected to increasing attention as last container that molten steel enters continuous cast mold.Ladle is opened when watering, and the molten steel beam dashes refractory material working lining in the tundish and decreases seriously, and molten steel rolls strongly near the beam, tundish molten steel surface coverture can be involved in molten steel on the one hand, introduces new impurity; Molten steel is exposed in the air by secondary oxidation.In addition, the molten steel in the ladle from long nozzle flow out enter tundish after, also be not able to do in time with tundish in the molten steel that retains just mix and directly flow to outlet along the tundish bottom, can not effectively remove nonmetal inclusion in the molten steel.Under tundish inlet molten steel beam, build by laying bricks or stones and press down rapid device and can weaken the molten steel turbulence and roll, change the flow path of molten steel in tundish, prolong molten steel time of staying in tundish, promote non-metallic inclusion to remove.Chinese patent 200720064151.9 is disclosed by retrieval is a kind of rectangular inner cavity, and the bottom is little, and opening is big presses down rapid device.Thisly press down rapid device molten steel is flowed to liquid level, make that nonmetal inclusion is caught by surface dopant in the molten steel, but weakening near poor effect aspect molten steel rolls the beam.Chinese patent 200620089416.6 is disclosed to be that a kind of inner chamber is fluted, and the bottom surface is the rapid device that presses down of wavy surface.But this rapid device can effectively weaken the molten steel turbulence and roll, but is promoting molten steel to the liquid level upper reaches, and it is not good enough to shorten inclusion floating removal time aspect effect.
Summary of the invention
The purpose of this utility model is to propose a kind of continuous casting tundish to press down rapid device, makes it can suppress the molten steel turbulence and rolls, and can improve the flow path of molten steel in tundish again, promotes the nonmetal inclusion come-up to remove; Thereby overcome existing continuous casting tundish and press down the existing defective of rapid device.
The utility model is finished the technical scheme that its invention task proposed: a kind of continuous casting tundish presses down rapid device, the main body that described tundish presses down rapid device is a cylinder, described cylinder has circular cavity, described cavity is served as reasons the bottom to the upper end open undergauge structure of hole enlargement gradually more gradually, the aspect ratio of the extension diameter section of cavity and undergauge section is 1.5～2.5, described cavity top wall inclination alpha is 45 °～75 °, and cavity bottom wall angle of inclination beta is 45 °～75 °.
Described continuous casting tundish presses down rapid device to be made by refractory material, builds by laying bricks or stones in tundish and under the long nozzle, guarantees that shock point pressing down rapid device center, is used to control MOLTEN STEEL FLOW, reduces the volume slag, promotes nonmetal inclusion to remove.
The utility model presses down rapid device inner-cavity structure according to the knowledge of hydrodynamics and metallurgy principle by appropriate design, has improved molten steel flow state in the steel-making sheet blank continuous casting tundish, and MOLTEN STEEL FLOW is steady, and new and old molten steel mixes.Weakened because of beam impacts the liquid level turbulence that causes and rolled, volume slag phenomenon obviously reduces.The utility model is reasonable in design, the whole circular design that adopts, and both economical with materials can satisfy desired function again, and processing is simple, remarkable in economical benefits.
Laboratory hydraulic model data show: use the utility model and press down rapid device, the dead space volume mark is less than 13% in the tundish, and liquid level seethes the phenomenon disappearance near the beam district; Numerical result show particle diameter greater than 50 μ m nonmetal inclusion clearances greater than 70%, can effectively remove nonmetal inclusion, improve the molten steel cleanliness factor.
Description of drawings
Fig. 1 looks cutaway view for structure master of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
Further narrate content of the present utility model below in conjunction with accompanying drawing and embodiment:
Embodiment 1: the utility model structure, as shown in Figure 1, 2, its main body is a cylinder, and described cylinder outer dia is 180mm, and total height is 250mm; It is inner for the circular cavity at the end is arranged, described cavity is served as reasons the bottom to the upper end open undergauge structure of hole enlargement gradually more gradually, be that the cavity cross section bottom is big, middle little, opening is big, and the aspect ratio of the extension diameter section of cavity and undergauge section is 1.5, be that two parts aspect ratio H1/H2 is 1.5 about the cavity, wall inclination angle, cavity top is 45 °, and wall inclination angle, cavity bottom is 75 °, and cavity upper opening diameter is 300mm.
The agent structure of embodiment 2: embodiment 2 is identical with embodiment 1, among this embodiment, the aspect ratio of the extension diameter section of cavity and undergauge section is 2.5, and promptly two parts aspect ratio H1/H2 is 2.5 about the cavity, wall inclination angle, cavity top is 75 °, and wall inclination angle, cavity bottom is 45 °.
The agent structure of embodiment 3: embodiment 3 is identical with embodiment 1, among this embodiment, the aspect ratio of the extension diameter section of cavity and undergauge section is 2, and promptly two parts aspect ratio H1/H2 is 2 about the cavity, wall inclination angle, cavity top is 60 °, and wall inclination angle, cavity bottom is 60 °.
Claims (2)
1. a continuous casting tundish presses down rapid device, it is characterized in that: the main body that described tundish presses down rapid device is a cylinder, and described cylinder has circular cavity, and described cavity is served as reasons the bottom to the upper end open undergauge structure of hole enlargement gradually more gradually.
2. a kind of continuous casting tundish according to claim 1 presses down rapid device, it is characterized in that the extension diameter section of described cavity and the aspect ratio of undergauge section are 1.5～2.5, described cavity top wall inclination alpha is 45 °～75 °, and cavity bottom wall angle of inclination beta is 45 °～75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202378712U CN201693166U (en) | 2010-06-18 | 2010-06-18 | Continuous casting tundish turbulence inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202378712U CN201693166U (en) | 2010-06-18 | 2010-06-18 | Continuous casting tundish turbulence inhibitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201693166U true CN201693166U (en) | 2011-01-05 |
Family
ID=43394410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202378712U Expired - Fee Related CN201693166U (en) | 2010-06-18 | 2010-06-18 | Continuous casting tundish turbulence inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201693166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325101A (en) * | 2014-11-03 | 2015-02-04 | 山东钢铁股份有限公司 | Continuous casting tundish turbulator |
-
2010
- 2010-06-18 CN CN2010202378712U patent/CN201693166U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325101A (en) * | 2014-11-03 | 2015-02-04 | 山东钢铁股份有限公司 | Continuous casting tundish turbulator |
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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: 20110105 Termination date: 20150618 |
|
| EXPY | Termination of patent right or utility model |