CN204171347U - A kind of device of tundish full guard cast - Google Patents
A kind of device of tundish full guard cast Download PDFInfo
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- CN204171347U CN204171347U CN201420596493.5U CN201420596493U CN204171347U CN 204171347 U CN204171347 U CN 204171347U CN 201420596493 U CN201420596493 U CN 201420596493U CN 204171347 U CN204171347 U CN 204171347U
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- endless tube
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Abstract
The utility model discloses the device of a kind of tundish full guard cast; inside the bottom margin of this device plug hole, inside the bottom margin in baking hole, inside the bottom margin in stopper hole, all inlay circular endless tube; circular endless tube connects Argon pipeline and is blown into argon gas; effectively can reduce air from plug hole, baking hole and the entering of stopper hole; air in bag in Rapid replacement; prevent molten steel secondary oxidation, improve molten steel cleanness, finally improve slab quality.
Description
Technical field
The utility model relates to steelmaking technical field, particularly relates to the device of a kind of tundish full guard cast.
Background technology
Tundish is the intermediate receptacle during metallurgy industry continuous casting is produced between ladle and crystallizer, and in casting cycle, air enters molten steel, and the molding casting measure that current middle bag is extensively taked mainly contains:
(1) long nozzle is adopted to pour into a mould between ladle and tundish;
(2) submersed nozzle molding casting is adopted between tundish and crystallizer;
(3) between steel ladle sliding water gap and long nozzle, argon gas-sealed is passed into;
(4) argon gas-sealed is passed between tundish upper nozzle and tundish immersed nozzle;
(5) the inner molten steel surface of tundish adds coverture.
And in actual production casting process, water owing to opening, water eventually, change ladle, change the mouth of a river, crystallizer tune is wide, become the impact of the transient casting factors such as pulling rate, often there is the exposed phenomenon of molten steel in middle Baogang liquid surface, thus cause molten steel to contact with air, by secondary oxidation, have a strong impact on Cleanliness of Molten Steel and slab quality.
The middle handbag lid used in prior art generally has plug hole, baking hole and stopper hole, plug hole in pouring molten steel process, baking hole are completely exposed, also there is space in stopper hole, under the impact of transient casting factor, molten steel is exposed causes a large amount of air-breathing, to cause in air various composition (especially aluminium is the active element of representative) in oxygen and molten steel at high temperature to react, generate various field trash and reduce molten steel inherent quality and mobility thereof, finally affecting slab quality.
Utility model content
The utility model provides the device of a kind of tundish full guard cast, with Baogang's liquid secondary oxidation in solving, and then affects the technical problem of Cleanliness of Molten Steel and slab quality.
For solving the problems of the technologies described above, the utility model provides the device of a kind of tundish full guard cast, is applicable to wrap in slab double fluid, comprises: middle handbag lid; Argon pipeline, described middle handbag lid is imbedded in one end of described Argon pipeline, and described Argon pipeline is connected with the gas bag of the described circular endless tube of parcel; Plug hole, baking hole, stopper hole; Wherein, inside the bottom margin of described plug hole, inside the bottom margin in described baking hole, inside the bottom margin in described stopper hole, circular endless tube is all inlayed; Described circular endless tube is provided with N number of circular hole, and N is positive integer.
Preferably, the circle diameter of described circular endless tube is 1.2 times ~ 1.4 times of corresponding clad bore dia, and the degree of depth that described circular endless tube embeds described middle handbag lid is 1.2 times ~ 1.6 times of the annular radii of described circular endless tube.
Preferably, the Circularhole diameter on described circular endless tube is 1/4 times ~ 1/2 times of the pipe diameter of described circular endless tube.
Preferably, the pipe diameter of described Argon pipeline is 1 times ~ 1.5 times of the pipe diameter of circular endless tube; The other end access argon gas of described Argon pipeline.
Preferably, the internal diameter of described gas bag is 2 times ~ 4 times of the pipe diameter of described circular endless tube.
By one or more technical scheme of the present utility model, the utility model has following beneficial effect or advantage:
The utility model provides the device of a kind of tundish full guard cast; inside the bottom margin of this device plug hole, inside the bottom margin in baking hole, inside the bottom margin in stopper hole, all inlay circular endless tube; circular endless tube connects Argon pipeline and is blown into argon gas; effectively can reduce air from plug hole, baking hole and the entering of stopper hole; air in bag in Rapid replacement; prevent molten steel secondary oxidation, improve molten steel cleanness, finally improve slab quality.
Accompanying drawing explanation
The structure chart of the device of the tundish full guard cast that Figure 1A provides for the utility model embodiment;
A-A cross-sectional view in Figure 1A that Figure 1B provides for the utility model embodiment;
The schematic diagram of the gas bag that Fig. 2 provides for the utility model embodiment;
The locations of structures figure of the stopper hole that Fig. 3 provides for the utility model embodiment, baking hole, plug hole three;
When the circular endless tube that Fig. 4 A-Fig. 4 C provides for the utility model embodiment and Argon pipeline adopt gas bag to be connected, inlay the schematic diagram of position and line size;
The circular hole distribution map that Fig. 5 provides for the utility model embodiment.
Description of reference numerals: middle handbag lid 1, Argon pipeline 2, circular endless tube 3, plug hole 4, gas bag 5, baking hole 6, stopper hole 7; The pipe diameter of the circular endless tube 3 of d-, the clad bore dia that d1-is corresponding, the circle diameter of the circular endless tube 3 of d2-, the pipe diameter of d3-Argon pipeline 2, the internal diameter of d4-gas bag 5, d5-Circularhole diameter, the degree of depth of handbag lid 1 during the circular endless tube 3 of h-embeds.
Detailed description of the invention
In order to make the utility model the technical staff in the technical field more clearly understand the utility model, below in conjunction with accompanying drawing, by specific embodiment, technical solutions of the utility model are described in detail.
See Figure 1A-Figure 1B.
Figure 1A is the structure chart of the device of the tundish full guard cast that the utility model embodiment provides.
Figure 1B is A-A cross-sectional view in Figure 1A.
In concrete implementation process, the device of tundish full guard cast comprises: middle handbag lid 1, Argon pipeline 2, circular endless tube 3, plug hole 4, gas bag 5, baking hole 6, stopper hole 7.
Wherein, one end of Argon pipeline 2 is imbedded middle handbag lid 1 and is connected with the gas bag 5 of the circular endless tube 3 of parcel.The other end access argon gas of Argon pipeline 2.
Please refer to Figure 1B, the pipe diameter d3 of Argon pipeline 2 is 1 times ~ 1.5 times of the pipe diameter d of circular endless tube 3.That is: the pipe diameter of circular endless tube 3 is d, and the pipe diameter of Argon pipeline 2 is d3, so: d3=d ~ 1.5d.
Please refer to Fig. 2 below, is the schematic diagram of gas bag 5.
In order to ensure steadily being blown into of argon gas, between Argon pipeline 2 with circular endless tube 3, gas bag 5 is adopted to be connected.In addition, please refer to Figure 1B, the internal diameter d4 of gas bag 5 is 2 times ~ 4 times of the pipe diameter d of circular endless tube 3, that is: the internal diameter of gas bag 5 is d4, so d4=2d ~ 4d.Ensure that the circular hole argon gas amount that annulus distributes is uniform and stable.
Inside the bottom margin of plug hole 4, inside the bottom margin in baking hole 6, inside the bottom margin in stopper hole 7, all inlay circular endless tube 3.
Circular endless tube 3 is provided with N number of circular hole, and N is positive integer.
For circular endless tube 3, the circle diameter d2 of circular endless tube 3 is 1.2 times ~ 1.4 times of corresponding clad bore dia d1, that is: d2=1.2d1 ~ 1.4d1.During circular endless tube 3 embeds, the degree of depth h of handbag lid 1 is 1.2 times ~ 1.6 times of the annular radii of circular endless tube 3, that is: h=0.6d2 ~ 0.8d2.And clad hole specifically refers to plug hole 4, or baking hole 6, or stopper hole 7.
For circular hole, please refer to Figure 1B, Circularhole diameter d5 is 1/4 times ~ 1/2 times of the pipe diameter d of circular endless tube 3, that is: d5=0.25d ~ 0.5d.The plane of circular hole blowing angle and circular endless tube 3 be 30 ~ 60 ° in downward direction, in casting cycle, argon gas is blown into by circular hole, remains on the pressure-fired argon atmospher in casting cycle in tundish.
In order to ensure steadily being blown into of argon gas, circular hole is generally be evenly distributed on circular endless tube 3, and the circular hole quantity on each circular endless tube 3 can be one or more.Such as, can equally distributed 8 ~ 16 circular holes on each circular endless tube 3, Circularhole diameter is 1/4 times ~ 1/2 times of the pipe diameter of circular endless tube 3, and the plane of blowing angle and circular endless tube 3 is 30 ~ 60 °.
Specific embodiment is used to be described below.
In the structure of wrapping in 60 tons of slab double fluids, stopper hole 7, baking hole 6, (diameter is respectively 350mm, 450mm and 950mm to plug hole 4, as Fig. 3), these three parts bottom margin separately inlays the circular endless tube 3 of Φ 20 (diameter 20) and the Argon pipeline 2 of Φ 30 (diameter 30) respectively.
Circular endless tube 3 adopts gas bag 5 to be connected with Argon pipeline 2, inlays position and line size respectively as shown in Fig. 4 A, Fig. 4 B, Fig. 4 C.
In Figure 4 A, d=20, d1=350, d2=420, d3=30, d4=60, d5=8, h=5.In addition, the blowing angle of circular hole and the plane of circular endless tube 3 are 45 °.
In figure 4b, d=20, d1=450, d2=540, d3=30, d4=60, d5=8, h=5.In addition, the blowing angle of circular hole and the plane of circular endless tube 3 are 45 °.
In figure 4 c, d=20, d1=950, d2=1140, d3=30, d4=60, d5=8, h=5.In addition, the blowing angle of circular hole and the plane of circular endless tube 3 are 45 °.
Be drilled with equally distributed 15 circular holes in the bottom of circular endless tube 3, circular hole distribution is as Fig. 5, and the circular arc formed between every two circular holes is 24 °.
By one or more technical scheme of the present utility model, the utility model has following beneficial effect or advantage:
The utility model provides the device of a kind of tundish full guard cast; inside the bottom margin of this device plug hole, inside the bottom margin in baking hole, inside the bottom margin in stopper hole, all inlay circular endless tube; circular endless tube connects Argon pipeline and is blown into argon gas; effectively can reduce air from plug hole, baking hole and the entering of stopper hole; air in bag in Rapid replacement; prevent molten steel secondary oxidation, improve molten steel cleanness, finally improve slab quality.
Although described preferred embodiment of the present utility model, one of ordinary skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (5)
1. a device for tundish full guard cast, is applicable to wrap in slab double fluid, it is characterized in that, comprising:
Middle handbag lid;
Argon pipeline, described middle handbag lid is imbedded in one end of described Argon pipeline, and described Argon pipeline is connected with the gas bag of the circular endless tube of parcel;
Plug hole, baking hole, stopper hole; Wherein, inside the bottom margin of described plug hole, inside the bottom margin in described baking hole, inside the bottom margin in described stopper hole, described circular endless tube is all inlayed; Described circular endless tube is provided with N number of circular hole, and N is positive integer.
2. device as claimed in claim 1, it is characterized in that, the circle diameter of described circular endless tube is 1.2 times ~ 1.4 times of corresponding clad bore dia, and the degree of depth that described circular endless tube embeds described middle handbag lid is 1.2 times ~ 1.6 times of the annular radii of described circular endless tube.
3. device as claimed in claim 1, it is characterized in that, the Circularhole diameter on described circular endless tube is 1/4 times ~ 1/2 times of the pipe diameter of described circular endless tube.
4. device as claimed in claim 1, is characterized in that,
The pipe diameter of described Argon pipeline is 1 times ~ 1.5 times of the pipe diameter of circular endless tube; The other end access argon gas of described Argon pipeline.
5. device as claimed in claim 1, it is characterized in that, the internal diameter of described gas bag is 2 times ~ 4 times of the pipe diameter of described circular endless tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420596493.5U CN204171347U (en) | 2014-10-15 | 2014-10-15 | A kind of device of tundish full guard cast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420596493.5U CN204171347U (en) | 2014-10-15 | 2014-10-15 | A kind of device of tundish full guard cast |
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| CN204171347U true CN204171347U (en) | 2015-02-25 |
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| CN201420596493.5U Active CN204171347U (en) | 2014-10-15 | 2014-10-15 | A kind of device of tundish full guard cast |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689694A (en) * | 2016-03-11 | 2016-06-22 | 山东钢铁股份有限公司 | Device and method of sealing and argon-blowing protecting continuous casting tundish |
| CN111168024A (en) * | 2020-02-11 | 2020-05-19 | 首钢集团有限公司 | Device and method for preventing molten steel from being secondarily oxidized in ladle changing process |
| CN111545718A (en) * | 2020-05-11 | 2020-08-18 | 首钢集团有限公司 | Method and device for blowing argon in slab continuous casting |
| CN113828764A (en) * | 2021-09-24 | 2021-12-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous casting tundish cover and air blowing protection casting method thereof |
-
2014
- 2014-10-15 CN CN201420596493.5U patent/CN204171347U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689694A (en) * | 2016-03-11 | 2016-06-22 | 山东钢铁股份有限公司 | Device and method of sealing and argon-blowing protecting continuous casting tundish |
| CN111168024A (en) * | 2020-02-11 | 2020-05-19 | 首钢集团有限公司 | Device and method for preventing molten steel from being secondarily oxidized in ladle changing process |
| CN111168024B (en) * | 2020-02-11 | 2021-12-21 | 首钢集团有限公司 | Device and method for preventing molten steel from being secondarily oxidized in ladle changing process |
| CN111545718A (en) * | 2020-05-11 | 2020-08-18 | 首钢集团有限公司 | Method and device for blowing argon in slab continuous casting |
| CN111545718B (en) * | 2020-05-11 | 2022-04-19 | 首钢集团有限公司 | Method and device for blowing argon in slab continuous casting |
| CN113828764A (en) * | 2021-09-24 | 2021-12-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous casting tundish cover and air blowing protection casting method thereof |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |
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| CP01 | Change in the name or title of a patent holder |