CN101722281A - Argon protective device for ingot steel casting - Google Patents
Argon protective device for ingot steel casting Download PDFInfo
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- CN101722281A CN101722281A CN200810043843A CN200810043843A CN101722281A CN 101722281 A CN101722281 A CN 101722281A CN 200810043843 A CN200810043843 A CN 200810043843A CN 200810043843 A CN200810043843 A CN 200810043843A CN 101722281 A CN101722281 A CN 101722281A
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- connecting plate
- urceolus
- inner core
- protective device
- argon
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Abstract
The invention discloses an argon protective device for ingot steel casting, which is composed of an inner barrel and an outer barrel; a connecting plate for connecting the inner barrel and the outer barrel is arranged at the lower end of the inner barrel and the outer barrel, ceramic fiber sealing sleeve is filled between the inner barrel and the outer barrel at the upper end of the connecting plate, and the ceramic fiber sealing sleeve is higher than the upper end surface of the inner barrel and the outer barrel; an argon lead-in pipe which is extended outwards is arranged on the outer barrel wall at the lower end of the connecting plate, and a plurality of through holes which lead argon out are arranged on the inner barrel wall corresponding to the argon lead-in pipe, and the height between the upper end surface of the connecting plate and the upper end surface of the inner barrel and the outer barrel is more than the height between the lower end surface of the connecting plate and the lower end surface between the inner barrel and the outer barrel. The argon protective device can reduce secondary oxidization in the casting process of molten steel, reduce the mixed sundries in the molten steel and improve the molten steel purity degree.
Description
Technical field
The present invention relates to a kind of protective device that in the large-scale steel ingot casting process, uses, particularly relate to a kind of argon protective device that is used for ingot steel casting.
Background technology
In the casting process of large forgings, because between ladle and the tundish, have difference in height between ladle and the feed trumpet horn mouth, so the part molten steel exposes in atmosphere when cast.The easy like this molten steel generation oxidation reaction that makes generates oxide; Gathering in the process of setting of steel ingot becomes the bulky grain endogenous inclusion, and product quality and every physical property are produced ill effect.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of argon protective device that is used for ingot steel casting, reduces the secondary oxidation of molten steel in casting process, reduces the molten steel endogenous inclusion, improves the molten steel degree of purity.
For solving the problems of the technologies described above, the argon protective device that is used for ingot steel casting of the present invention is a tubular, is made up of inner core and urceolus; Lower end at inner core and urceolus is provided with the connecting plate that is connected inner core and urceolus, fills the ceramic fibre sealing shroud between inner core on the described connecting plate and urceolus, and makes the ceramic fibre sealing shroud be higher than the upper surface of inner core and urceolus;
Be provided with outward extending argon gas ingress pipe on the outer tube wall of described connecting plate lower end, the inner tube wall corresponding with the argon gas ingress pipe is provided with a plurality of through holes that argon gas is flowed out;
Height between described connecting plate upper surface to the upper surface of inner core and urceolus is greater than the height between lower surface to the lower surface of inner core and urceolus of connecting plate.
Owing to adopt the argon protective device that is used for ingot steel casting of the present invention; can stop molten steel as much as possible contacts with oxygen in the atmosphere in casting process; reduce the generation of oxidation reaction; steel flow and isolated from atmosphere with cast; and utilize the argon gas density characteristic bigger than air, and the air displacement in the argon protective device is gone out, form argon for protecting pouring atmosphere; reduce the secondary oxidation problem of molten steel, improve the molten steel degree of purity.
The present invention can effectively improve the forging internal soundness, produces high-quality large forgings product.
Description of drawings
The present invention is further detailed explanation below in conjunction with accompanying drawing and the specific embodiment:
Fig. 1 is the argon protective device schematic diagram that is used for ingot steel casting of the present invention;
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
Owing to have difference in height between ladle nozzle and the feed trumpet horn mouth during pouring molten steel, so molten steel is exposed in the air the easy and airborne oxygen generation oxidation reaction of the manganese in the molten steel (Mn), silicon (Si) and sulphur elements such as (S), generation oxide.When solidification of molten steel, become the field trash that is harmful to the product internal soundness, and the following process and the check of product had adverse influence.
In order to address this problem, the invention provides a kind of argon protective device that is used for ingot steel casting.Shown in Fig. 1,2, described argon protective device is a tubular, is made up of inner core 6 and urceolus 5.In the lower end of inner core 6 and urceolus 5, be provided with the connecting plate 4 that connects inner core 6 and urceolus 5.Described connecting plate 4 can form the connecting plate of an annular around between inner core 6 and the urceolus 5.Between the inner core 6 of described connecting plate 4 upper ends and urceolus 5, fill ceramic fibre sealing shroud 2, and make ceramic fibre sealing shroud 2 be higher than the upper surface 7 of inner core 6 and urceolus 5.So in actual use, when described argon protective device was arranged at the lower end of ladle, ladle was realized soft the contact with argon protective device.
In the lower end of described connecting plate 4, the wall of urceolus 5 is provided with outward extending argon gas ingress pipe 1.The wall of the inner core 6 corresponding with argon gas ingress pipe 1 is provided with a plurality of through holes 3 that argon gas is flowed out.
Referring to shown in Figure 2, described argon protective device is a cylindrical shape, and inner core 6 and urceolus 5 are concentric contour cylindrical shape.Certain described argon protective device also can be square tube shape, or the cross section is the tubular of other shape.
Described inner core 6 and urceolus 5 can adopt the steel plate of 4-6mm to make, and the internal diameter of argon gas ingress pipe 1 can be more than or equal to 13mm.Height between the lower surface of described connecting plate 4 to the lower surface 8 of inner core 6 and urceolus 5 is more than or equal to 50mm.Height between described connecting plate 4 upper surfaces to the upper surface 7 of inner core 6 and urceolus 5, should be greater than the height between lower surface to the lower surface 8 of inner core 6 and urceolus 5 of connecting plate 4, for example, height between described connecting plate 4 upper surfaces to the upper surface 7 of inner core 6 and urceolus 5, and the aspect ratio between the lower surface of connecting plate 4 to the lower surface 8 of inner core 6 and urceolus 5 is 5: 1.
When pouring molten steel, argon protective device of the present invention is arranged between ladle and the feed trumpet horn mouth, the steel flow that exposes is airtight.The principle bigger than the density of air according to the density of argon gas feeds argon gas by argon gas ingress pipe 1 in described argon protective device (being in the inner core 6), the air in the argon protective device is discharged, and plays the effect of secluding air with this.Can reduce when cast molten steel like this by the possibility of secondary oxidation, reduce the quantity and the size of oxide inclusion in the steel, reach the requirement of field trash grading and nondestructive inspection in the purchase specifications, the inward nature of raising product.
Claims (4)
1. argon protective device that is used for ingot steel casting, it is characterized in that: described argon protective device is a tubular, is made up of inner core and urceolus; Lower end at inner core and urceolus is provided with the connecting plate that is connected inner core and urceolus, fills the ceramic fibre sealing shroud between inner core on the described connecting plate and urceolus, and makes the ceramic fibre sealing shroud be higher than the upper surface of inner core and urceolus;
Be provided with outward extending argon gas ingress pipe on the outer tube wall of described connecting plate lower end, the inner tube wall corresponding with the argon gas ingress pipe is provided with a plurality of through holes that argon gas is flowed out;
Height between described connecting plate upper surface to the upper surface of inner core and urceolus is greater than the height between lower surface to the lower surface of inner core and urceolus of connecting plate.
2. the argon protective device that is used for ingot steel casting as claimed in claim 1 is characterized in that: described connecting plate is around the annular connecting plate between inner core and the urceolus.
3. the argon protective device that is used for ingot steel casting as claimed in claim 1 is characterized in that: described argon protective device is a cylindrical shape, and inner core and urceolus are concentric contour cylindrical shape.
4. the argon protective device that is used for ingot steel casting as claimed in claim 1; it is characterized in that: the height between the upper surface of described connecting plate to the upper surface of inner core and urceolus, and the aspect ratio between the lower surface of connecting plate to the lower surface of inner core and urceolus is 5: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100438434A CN101722281B (en) | 2008-10-16 | 2008-10-16 | Argon protective device for ingot steel casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100438434A CN101722281B (en) | 2008-10-16 | 2008-10-16 | Argon protective device for ingot steel casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101722281A true CN101722281A (en) | 2010-06-09 |
| CN101722281B CN101722281B (en) | 2012-03-21 |
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ID=42444167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100438434A Expired - Fee Related CN101722281B (en) | 2008-10-16 | 2008-10-16 | Argon protective device for ingot steel casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN101722281B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407296A (en) * | 2010-09-25 | 2012-04-11 | 宝山钢铁股份有限公司 | Pouring stream protection method and protection device |
| CN105964957A (en) * | 2016-06-30 | 2016-09-28 | 江苏永钢集团有限公司 | Argon protecting system based on multiple pouring states |
| CN106141158A (en) * | 2015-03-25 | 2016-11-23 | 江苏天工工具有限公司 | A kind of argon protective device of pouring in steel smelting |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2579558Y (en) * | 2002-08-08 | 2003-10-15 | 宝钢集团上海五钢有限公司 | Full closed argon gas protective casting device for molten steel die casting |
| CN2808364Y (en) * | 2005-08-05 | 2006-08-23 | 石家庄钢铁股份有限公司 | Hermetic-sealing ladle sleeve tube for continuous casting |
| CN200955059Y (en) * | 2006-07-28 | 2007-10-03 | 江阴兴澄特种钢铁有限公司 | Continuous casting steel-ladle pouring-area argon-gas sealing protection tower box |
| CN200984637Y (en) * | 2006-12-20 | 2007-12-05 | 山西太钢不锈钢股份有限公司 | Argon sealing protective casting seal ring |
-
2008
- 2008-10-16 CN CN2008100438434A patent/CN101722281B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407296A (en) * | 2010-09-25 | 2012-04-11 | 宝山钢铁股份有限公司 | Pouring stream protection method and protection device |
| CN102407296B (en) * | 2010-09-25 | 2013-04-24 | 宝山钢铁股份有限公司 | Pouring stream protection method and protection device |
| CN106141158A (en) * | 2015-03-25 | 2016-11-23 | 江苏天工工具有限公司 | A kind of argon protective device of pouring in steel smelting |
| CN105964957A (en) * | 2016-06-30 | 2016-09-28 | 江苏永钢集团有限公司 | Argon protecting system based on multiple pouring states |
| CN105964957B (en) * | 2016-06-30 | 2018-11-30 | 江苏永钢集团有限公司 | Argon insurance system based on more casting conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101722281B (en) | 2012-03-21 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20120321 Termination date: 20161016 |