CN102416452B - Device for continuous casting protective casting and method for protective casting - Google Patents
Device for continuous casting protective casting and method for protective casting Download PDFInfo
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- CN102416452B CN102416452B CN201110414492.5A CN201110414492A CN102416452B CN 102416452 B CN102416452 B CN 102416452B CN 201110414492 A CN201110414492 A CN 201110414492A CN 102416452 B CN102416452 B CN 102416452B
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- cylindrical sleeve
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Abstract
The invention discloses a device for continuous casting protective casting and a method for protective casting. The device comprises a metal bracket, a cylindrical sleeve and an argon protective system, wherein the argon protective system consists of a gas supplying device, an argon pipeline and gas outlet holes; the cylindrical sleeve consists of a first arc-shaped half-cylinder and a second arc-shaped half-cylinder; the cylindrical sleeve is fixed on the end part of the movable metal bracket; and the gas outlet holes connected with the argon pipeline are uniformly distributed on the upper part of the inner cavity of the sleeve and are arrayed at an upper layer and a lower layer in a staggered way. During working, the movable metal bracket is used for packing the cylindrical sleeve on the joint of a pouring box draining port and an immersion water port, an argon switch is switched on, and argon is blown inwards, so that an argon protecting layer is formed in the sleeve. The device has a simple and reasonable structure, and is convenient to operate; and the air can be prevented from entering the molten steel from a space between the pouring box draining port and the immersion water port in the pouring process, the content of inclusions in steel is reduced, the temperature loss can be reduced simultaneously, and the temperature of steel discharged from a converter is lowered, so that the quality of the steel is improved.
Description
Technical field
The invention belongs to Ferrous Metallurgy pouring molten steel field, particularly provide a kind of casting process molding casting and reduce the device of secondary oxidation of steel and the method for molding casting.
Background technology
Improve steel product quality, just must reduce steel inclusion, especially large inclusions.And secondary oxidation is steel inclusion important sources, therefore, in casting process, a very important measure adopts protective casting exactly, prevents the secondary oxidation of casting process.For the molding casting mode adopted in current casting process, its mode is relatively simple, but molding casting effect is poor, and dismounting is loaded down with trivial details.Molten steel in casting process because air enters molten steel via junction, the mouth of a river; inclusion content of steel is raised, and then affects the quality of steel, therefore need to improve molding casting effect further; improve molding casting device, with satisfied expansion kind, propose high-quality requirement.
Summary of the invention
Goal of the invention is to provide a kind of method for continuous casting protection pouring and device thereof; adopt the method can effectively to avoid in casting process air therefrom between enter molten steel between the mouth of a river and submersed nozzle under bag; inclusion content of steel can be reduced; temperature loss can be reduced simultaneously; reduce Tapping Temperature of Bof, thus improve the quality of steel.
The present invention is by the following technical solutions: a kind of device for continuous casting protection pouring, and this device comprises metallic support, cylindrical sleeve and argon shield system;
Wherein, described argon shield system is made up of feeder, argon gas pipeline and venthole;
Described cylindrical sleeve is made up of the first arc semicolumn and the second arc semicolumn, first arc semicolumn side is provided with electromagnet and lower electromagnet, opposite side with hinged with the second arc semicolumn, the second arc semicolumn opposite side is provided with the upper steel disc relative with lower electromagnet with the upper electromagnet on described first arc semicolumn and lower upper steel disc;
One end of described metallic support and described first arc semicolumn consolidation, the other end is connected with described feeder, multiple described venthole divides the two-layer staggered upper end be uniformly distributed inside described first arc semicolumn and the second arc semicolumn, and described feeder is communicated with described venthole with the argon gas pipeline in the second arc semicolumn with the first arc semicolumn by being arranged on metallic support.
Further, the inner side material of described first arc semicolumn and the second arc semicolumn is aluminium-magnesium-resistance to material of carbon material, and outer material is steel.
Another object of the present invention is the work using the above-mentioned molding casting for continuous casting protection pouring device
Skill, its step comprises:
Step 1: before molten steel is opened and watered, moving metal support makes the center of the first arc semicolumn of expansion and the second arc semicolumn just to tundish lower nozzle and crystallizer submersed nozzle junction;
Step 2: slowly moving metal support, makes the first arc semicolumn contact with the mouth of a river, mobile second arc semicolumn, makes cylindrical sleeve wrap up tundish lower nozzle and crystallizer submersed nozzle junction;
Step 3: make the upper electromagnet on the first arc semicolumn and lower electromagnet energising, produce magnetic, tightly hold the upper steel disc on the second arc semicolumn and lower upper steel disc, thus close cylindrical sleeve;
Step 4: feeder is that 4NL/min is for argon gas with flow by the argon gas pipeline in metallic support, the first arc semicolumn and the second arc semicolumn in cylindrical sleeve cavity, argon gas venthole is jetted downwards, beginning molten steel is opened and is watered, and blowing argon gas protection is until cast terminates;
Step 5: cast terminate or need to change the mouth of a river time, close cylindrical jacket barrel and to power on magnet contactor, electromagnet and lower electromagnet and upper steel disc and lower steel disc are unclamped, open cylindrical sleeve, moving metal support, makes it depart from the mouth of a river, then carries out follow-up work.
The advantage of continuous casting protection pouring device of the present invention is: adopt cylindrical sleeve parcel at tundish lower nozzle and crystallizer submersed nozzle junction; adopt argon shield can thoroughly avoid air to enter molten steel from tundish lower nozzle and crystallizer submersed nozzle junction at cylindrical sleeve simultaneously; thus reduction inclusion content of steel, improve the quality of steel.The present invention has simplicity of design relative to other continuous casting protective device existing, workable, the advantages such as easy accessibility.
Accompanying drawing explanation
Fig. 1 is that the present invention is for continuous casting protection pouring device structural representation.
Fig. 2 is molding casting device entirety of the present invention in use scheme of installation.
In figure:
1. tundish, 2. tundish lower nozzle, 3. seal washer, 4. cylindrical sleeve, 4a. first arc semicolumn, 4b. second arc semicolumn, 5. argon gas pipeline, 6. metallic support, 7. submersed nozzle, 8. crystallizer, 9. venthole, 10. go up electromagnet, 13. lower electromagnets, 14. feeders on steel disc, 11. times steel discs, 12..
specific implementation method
below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
Be illustrated in figure 1 the structural representation of a kind of device for continuous casting protection pouring of the present invention, this device comprises metallic support 6, cylindrical sleeve 4 and argon shield system; Wherein, argon shield system is made up of argon gas pipeline 5 and multiple venthole 9, cylindrical sleeve 4 is made up of the first arc semicolumn 4a and the second arc semicolumn 4b, the side of the first arc semicolumn 4a is provided with electromagnet 12 and lower electromagnet 13, the side of opposite side and the second arc semicolumn 4b is hinged, and the opposite side of the second arc semicolumn 4b is provided with the upper steel disc 10 relative with lower electromagnet 13 with the upper electromagnet 12 on the first arc semicolumn 4a and lower steel disc 11; One end of metallic support 6 and the first arc semicolumn 4a consolidation, the other end is connected with feeder 14, the two-layer staggered upper end be uniformly distributed inside the first arc semicolumn 4a and the second arc semicolumn 4b of multiple venthole 9 points, feeder 14 is communicated with venthole 9 with the argon gas pipeline 5 in the second arc semicolumn 4b with the first arc semicolumn 4a by being arranged on metallic support 6.
As shown in Figure 2, the tundish lower nozzle 2 of tundish 1 docks with the submersed nozzle 7 of crystallizer 8, sealed by seal washer 3, cylindrical sleeve 4 is socketed in junction, the mouth of a river 2 matching size under cylindrical sleeve 4 upper end size and middle bag, cylindrical sleeve 4 lower end size and submersed nozzle 7 matching size, cylindrical sleeve 4 is fixed on metallic support 6 end, the venthole 9 of two row's Jet with downward flow directions is provided with in cylindrical sleeve 4, venthole 9 points two-layer interlocking is uniformly distributed, venthole 9 is arranged in metallic support 6 and is communicated with argon gas pipeline 5, the argon gas of ejection, casting process is played a protective role.
The present invention uses the process of this molding casting device:
Step 1: before molten steel is opened and watered, the center that moving metal support 6 makes the first arc semicolumn 4a of expansion and the second arc semicolumn 4b is just to the junction of tundish lower nozzle 2 and crystallizer submersed nozzle 7;
Step 2: slowly moving metal support 6, makes the first arc semicolumn 4a two ends contact with the tube wall at the mouth of a river, mobile second arc semicolumn 4b, makes cylindrical sleeve 4 wrap up tundish lower nozzle 2 and crystallizer submersed nozzle 7 junction;
Step 3: the upper electromagnet 12 on the first arc semicolumn 4a and lower electromagnet 13 are energized, produces magnetic, tightly holds the upper steel disc 10 on the second arc semicolumn 4b and upper steel disc 11, thus closes cylindrical sleeve 4;
Step 4: feeder 14 is that 4NL/min is for argon gas with flow by the argon gas pipeline 5 in metallic support 6, first arc semicolumn 4a and the second arc semicolumn 4b in cylindrical sleeve 4 cavity, argon gas is jetted downwards by venthole 9, beginning molten steel is opened and is watered, and blowing argon gas protection is until cast terminates;
Step 5: when cast terminates or needs to change the mouth of a river, close electro-magnet switch on cylindrical jacket barrel 4, electromagnet 12 and lower electromagnet 13 are unclamped with upper steel disc 10 and lower steel disc 11, open cylindrical sleeve 4, moving metal support 6, makes it depart from the mouth of a river, then carries out follow-up work.
A kind of method for continuous casting protection pouring of the present invention and device thereof are provided with seal washer 3 by tundish lower nozzle 2 and crystallizer submersed nozzle 7 junction, add the argon shield in cylindrical sleeve 4 cavity, effectively can completely cut off the contact of molten steel and air, prevent high-temperature molten steel from sucking air at casting process due to negative pressure, be conducive to reducing the nonmetal inclusion in oxygen content in steel, nitrogen content and steel, improve steel quality; In casting process, the mouth of a river is in certain closed state simultaneously, can reduce certain thermal loss, reduces molten steel temperature drop, reduces Tapping Temperature of Bof.
Claims (2)
1.
oneplant the device being used for continuous casting protection pouring, it is characterized in that, this device comprises metallic support (6), cylindrical sleeve (4) and argon shield system, wherein, described argon shield system is by feeder (14), argon gas pipeline (5) and multiple venthole (9) composition, described cylindrical sleeve (4) is made up of the first arc semicolumn (4a) and the second arc semicolumn (4b), the side of described first arc semicolumn (4a) is provided with electromagnet (12) and lower electromagnet (13), the side of opposite side and described second arc semicolumn (4b) is hinged, the opposite side of described second arc semicolumn (4b) is provided with the upper steel disc (10) relative with lower electromagnet (13) with the upper electromagnet (12) on described first arc semicolumn (4a) and lower steel disc (11), the inner side material of described first arc semicolumn (4a) and the second arc semicolumn (4b) is aluminium-magnesium-carbon material, and outer material is steel, one end of described metallic support (6) and described first arc semicolumn (4a) consolidation, the other end is connected with described feeder (14), multiple described venthole (9) point two-layer staggered upper end being uniformly distributed described first arc semicolumn (4a) and the second arc semicolumn (4b) inner side, described feeder (14) is communicated with described venthole (9) with the argon gas pipeline (5) in the second arc semicolumn (4b) with the first arc semicolumn (4a) by being arranged on described metallic support (6),
The method of the molding casting of this device, comprises the following steps:
Step 1: before molten steel is opened and watered, moving metal support (6) makes the center of the first arc semicolumn (4a) of expansion and the second arc semicolumn (4b) just to the junction of tundish lower nozzle (2) with crystallizer submersed nozzle (7);
Step 2: slowly moving metal support (6), the two ends of described first arc semicolumn (4a) are contacted with the tube wall of described tundish lower nozzle (2) with crystallizer submersed nozzle (7), mobile second arc semicolumn (4b), makes cylindrical sleeve (4) wrap up described tundish lower nozzle (2) and crystallizer submersed nozzle (7) junction;
Step 3: make the upper electromagnet (12) on described first arc semicolumn (4a) and lower electromagnet (13) energising, produce magnetic, tightly hold the upper steel disc (10) on described second arc semicolumn (4b) and lower steel disc (11), thus close described cylindrical sleeve (4);
Step 4: feeder (14) is that 4NL/min is for argon gas with flow by the argon gas pipeline (5) in described metallic support (6), the first arc semicolumn (4a) and the second arc semicolumn (4b) in the cavity of cylindrical sleeve (4), argon gas is jetted downwards by venthole (9), beginning molten steel is opened and is watered, and blowing argon gas protection is until cast terminates;
Step 5: in cast end or when needing to change the mouth of a river, close electro-magnet switch, described upper electromagnet (12) and lower electromagnet (13) are unclamped with upper steel disc (10) and lower steel disc (11), open cylindrical sleeve (4), moving metal support (6), make it depart from the mouth of a river, then carry out follow-up work.
2. the device for continuous casting protection pouring according to claim 1, it is characterized by, the tundish lower nozzle (2) of tundish (1) docks with the submersed nozzle (7) of crystallizer (8), sealed by seal washer (3), cylindrical sleeve (4) is socketed in junction, the mouth of a river (2) matching size under cylindrical sleeve (4) upper end size and middle bag, cylindrical sleeve (4) lower end size and submersed nozzle (7) matching size, cylindrical sleeve (4) is fixed on metallic support (6) end, the venthole (9) of two row's Jet with downward flow directions is provided with in cylindrical sleeve (4), venthole (9) point two-layer interlocking is uniformly distributed, venthole (9) is arranged on the interior argon gas pipeline (5) of metallic support (6) and is communicated with, the argon gas of ejection, casting process is played a protective role.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110414492.5A CN102416452B (en) | 2011-12-13 | 2011-12-13 | Device for continuous casting protective casting and method for protective casting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110414492.5A CN102416452B (en) | 2011-12-13 | 2011-12-13 | Device for continuous casting protective casting and method for protective casting |
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| CN102416452A CN102416452A (en) | 2012-04-18 |
| CN102416452B true CN102416452B (en) | 2015-04-01 |
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| CN201110414492.5A Active CN102416452B (en) | 2011-12-13 | 2011-12-13 | Device for continuous casting protective casting and method for protective casting |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226974B (en) * | 2014-09-22 | 2016-06-29 | 莱芜钢铁集团有限公司 | The device and method of the big water-coating port sealed argon-blowing protection of continuous casting |
| CN105108120A (en) * | 2015-08-21 | 2015-12-02 | 张继兰 | Automatic casting mechanism |
| CN107052324B (en) * | 2017-04-25 | 2023-01-31 | 湖州永兴特种不锈钢有限公司 | Connecting structure from tundish to crystallizer |
| CN117696847B (en) * | 2024-02-06 | 2024-05-03 | 内蒙古科技大学 | Tundish nozzle ferrule device for reducing molten steel inclusions and using method thereof |
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| US7100670B1 (en) * | 2003-09-12 | 2006-09-05 | The United States Of America As Represented By The United States Department Of Energy | Method for fabricating uranium foils and uranium alloy foils |
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| CN102416452A (en) | 2012-04-18 |
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