CN202224651U - Steel shell for long ladle nozzle - Google Patents
Steel shell for long ladle nozzle Download PDFInfo
- Publication number
- CN202224651U CN202224651U CN2011203465159U CN201120346515U CN202224651U CN 202224651 U CN202224651 U CN 202224651U CN 2011203465159 U CN2011203465159 U CN 2011203465159U CN 201120346515 U CN201120346515 U CN 201120346515U CN 202224651 U CN202224651 U CN 202224651U
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- CN
- China
- Prior art keywords
- steel shell
- long nozzle
- inlet pipe
- steel
- long
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a steel shell for a long ladle nozzle, which comprises a steel shell body and a gas inlet pipe. The upper portion of the steel shell body is provided with a cylinder, the lower portion of the steel shell body is provided with a cone, the upper end of the cylinder is bent inwards to form an annular cover edge, the gas inlet pipe is arranged on the outer side wall of the cylinder and communicated with an inner cavity of the steel shell body, and a positioning gasket is arranged on one side of the cover edge corresponding to the upper end face of the long nozzle. The steel shell for the long ladle nozzle is more reasonable in structural design, gas distribution is smooth, gas passing area reaching about 90% is about 40% larger than that of a conventional groove arranged on a long nozzle, and secondary oxidization and secondary argon absorption of molten steel caused by suction of the long nozzle can be effectively prevented. An argon blowing structure and an argon blowing method for the steel shell are more advanced, air can be isolated, and secondary oxidization of the molten steel can be prevented.
Description
Technical field
The utility model belongs to technical field of ferrous metallurgy, relates to a kind of ladle long nozzle and uses box hat.
Background technology
Along with the fast-developing of metallurgical technology and to making the further raising of quality requirements such as steel cleanliness factor; In present continuous casting technology; 100% slab is produced casting machine and has all been adopted the protection casting; 70% square billet casting machine has also all adopted protection casting, and its protection domain is from the ladle to the tundish, from the tundish to the crystallizer, in ladle, in the tundish and all adopted in the crystallizer and have high temperature melting and form coverture in bulk, covering slag with the air insulated layer function.Wherein, produce secondary oxidation, be provided with long nozzle in the centre in order to prevent that molten steel from being flowed in the tundish process by the mouth of a river under the ladle; It mainly acts on is to intercept molten steel to contact with the direct of air, thereby reduces the increase of steel water oxygen and nitrogen content, reach to completely cut off contacting of molten steel and air; Mainly the sealing effectiveness of mouth of a river matching part will be got well under long nozzle and ladle; Be sealed with two aspects, the one, the sealing ring protection, the secondth, adopt the more advanced argon jetting method of a kind of structure to protect.
The utility model content
The purpose of the utility model is to provide a kind of ladle long nozzle to use box hat.
The purpose of the utility model can realize through following technical scheme:
A kind of ladle long nozzle is used box hat; Comprise steel sheel and air inlet pipe, described steel sheel top is cylindrical body, and the bottom is a bullet; Described cylindrical body upper end bends inwards and forms the annular cover edge; The lateral wall of described cylindrical body is provided with air inlet pipe, and described air inlet pipe communicates with the inner chamber of steel sheel, and described lid is provided with locating shim along itself and the corresponding side in long nozzle upper surface.
Above-mentioned ladle long nozzle is used box hat, and described locating shim is for circle and evenly be arranged on lid along last.
Above-mentioned ladle long nozzle is used box hat, and the quantity of described locating shim is 6～10, and is welded on lid along last.
Above-mentioned ladle long nozzle is used box hat, and the thickness of described steel sheel is 2～3mm.
The beneficial effect of the utility model:
The ladle long nozzle that the utility model designed is used box hat; Its structural design is more reasonable; The gas shunting is unobstructed; Gas passing area reaches about 90%, and is bigger by about 40% than the gas passing area slotting on the long nozzle product of routine, can effectively prevent air-breathing secondary oxidation and the secondary suction nitrogen that causes molten steel of long nozzle.Its Argon structure and method are more advanced, can arrive secluding air, stop the secondary oxidation of molten steel.Its box hat thickness has higher binding strength at 2-3mm.
Description of drawings
Fig. 1 is the perspective view of the ladle long nozzle of the utility model with box hat.
Fig. 2 is the longitdinal cross-section diagram of the ladle long nozzle of the utility model with box hat.
Fig. 3 is the perspective view of cylindrical body.
Fig. 4 is the upward view of cylindrical body.
Fig. 5 is provided with the longitudinal sectional drawing of ladle long nozzle with the long nozzle of box hat.
The specific embodiment
As depicted in figs. 1 and 2, a kind of ladle long nozzle is used box hat, comprises steel sheel 1 and air inlet pipe 3; Described steel sheel 1 top is cylindrical body, and the bottom is a bullet, and described cylindrical body upper end bends inwards and forms annular cover along 2; The lateral wall of described cylindrical body is provided with air inlet pipe 3; And described air inlet pipe 3 communicates with the inner chamber of steel sheel 1, described lid along 2 its be provided with locating shim 4 (as shown in Figure 5) with the corresponding side in long nozzle 5 upper surfaces, described locating shim 4 is for circular and evenly be arranged on the lid edge 2; Locating shim 4 is welded on lid along on 2, and its quantity is 8.The thickness of steel sheel 1 is 2～3mm, has higher binding strength.
The top cylindrical body of described steel sheel 1 is arranged at 5 bowls of portion outsides of long nozzle and upper surface; The lower taper body of steel sheel 1 is installed on 5 bowls of portions of long nozzle and down arrives long nozzle 5 body section positions.Circular locating shim 4 quantity are 8, evenly be welded in advance lid along 2 with the corresponding side in long nozzle 5 upper surfaces, evenly shunt when gas is blown into, make the gas that combination seal place, the mouth of a river charges under long nozzle 5 and the ladle the same, reach secluding air.This circular locating shim 4 plays the effect of supporting steel sheel 1 simultaneously, has prevented that steel sheel 1 in use is out of shape, and influences throughput.
Claims (4)
1. a ladle long nozzle is used box hat; Comprise steel sheel (1) and air inlet pipe (3), described steel sheel (1) top is cylindrical body, and the bottom is a bullet; Described cylindrical body upper end bends inwards and forms annular cover along (2); The lateral wall of described cylindrical body is provided with air inlet pipe (3), and described air inlet pipe (3) communicates with the inner chamber of steel sheel (1), it is characterized in that described lid is provided with locating shim (4) along (2) itself and corresponding side in long nozzle (5) upper surface.
2. ladle long nozzle according to claim 1 is used box hat, it is characterized in that described locating shim (4) is circular and evenly is arranged on lid along on (2).
3. ladle long nozzle according to claim 1 and 2 is used box hat, and the quantity that it is characterized in that described locating shim (4) is 6～10, and is welded on lid along on (2).
4. ladle long nozzle according to claim 1 is used box hat, and the thickness that it is characterized in that described steel sheel (1) is 2～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203465159U CN202224651U (en) | 2011-09-15 | 2011-09-15 | Steel shell for long ladle nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203465159U CN202224651U (en) | 2011-09-15 | 2011-09-15 | Steel shell for long ladle nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202224651U true CN202224651U (en) | 2012-05-23 |
Family
ID=46075259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203465159U Expired - Lifetime CN202224651U (en) | 2011-09-15 | 2011-09-15 | Steel shell for long ladle nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202224651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057078A (en) * | 2013-11-20 | 2014-09-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Long nozzle and continuous casting method |
-
2011
- 2011-09-15 CN CN2011203465159U patent/CN202224651U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057078A (en) * | 2013-11-20 | 2014-09-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Long nozzle and continuous casting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |