CN201186340Y - Gas curtain with intermittent seam - Google Patents
Gas curtain with intermittent seam Download PDFInfo
- Publication number
- CN201186340Y CN201186340Y CNU2008200048246U CN200820004824U CN201186340Y CN 201186340 Y CN201186340 Y CN 201186340Y CN U2008200048246 U CNU2008200048246 U CN U2008200048246U CN 200820004824 U CN200820004824 U CN 200820004824U CN 201186340 Y CN201186340 Y CN 201186340Y
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- Prior art keywords
- curtain barricade
- air curtain
- described air
- barricade wall
- cleft
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Abstract
The utility model relates to a gas curtain barricade which distributes slots intermittently, wherein a gas chamber and gas slots which are used to communicate the gas chamber and the working surface of the gas curtain barricade are formed in the gas curtain barricade. The intermittent gas curtain barricade is characterized in that the gas slots on the working surface of the gas curtain barricade and on one straight line are intermittent. The gas curtain barricade of the utility model can effectively improve flow fields of liquid steel and can even the temperature and components of the liquid steel, the gas washing effect is good, gas blowing realizes flexible control easily, and the gas curtain barricade is in particular applicable to bakie metallurgy.
Description
Technical field
The utility model relates to the air curtain barricade wall that a kind of tundish metallurgy is used, specifically a kind of air curtain barricade wall that is interrupted the cloth seam.
Background technology
Utilize the air curtain barricade wall that is provided with in the tundish in tundish, to be blown into inert gas, not only evenly liquid steel temperature and composition in the tundish, and can improve flow field, the elimination stagnant water of molten steel in tundish, effectively prolong the time of staying of molten steel, impel the inclusion floating in the molten steel, thereby reach the purpose that reduces the molten steel inclusion content, improves molten steel purity.Tundish air curtain barricade wall of the prior art mostly is bar shaped, be arranged at the tundish bottom along the tundish width, and the air cleft that is used for blowing to tundish normally is provided with one or several along the length direction of air curtain barricade wall, but, because the width of described air curtain barricade wall is limited, therefore the air cleft of its length direction setting of air curtain barricade wall upper edge can only be one or limited several usually, the shortcoming of negligible amounts and the very elongated maximum that air cleft brought is exactly like this: cause blow gas's direction too outstanding, air-flow is very inhomogeneous, can not improve the flow field of molten steel in the tundish very effectively, it is undesirable to eliminate the stagnant water effect; In the molten steel content of field trash can not effectively be reduced, the air purge weak effect; And the gas flow that each seam blows out is more, and wayward fierce degree of blowing in certain direction causes the erosion to refractory material of the secondary oxidation, aggravation of molten steel.
The utility model content
For this reason, technical problem to be solved in the utility model is to provide a kind of can effectively improve molten steel flow field, and air purge is effective, blows and realizes the air curtain barricade wall of Flexible Control easily.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of air curtain barricade wall that is interrupted the cloth seam, form the air cleft of air chamber and described air chamber of connection and described air curtain barricade wall working surface in the described air curtain barricade wall, on described air curtain barricade wall working surface, be interrupted between the air cleft that is located on the same line.
Above-mentioned air curtain barricade wall, on described air curtain barricade wall working surface, described air cleft is provided with along described air curtain barricade wall length direction.
Above-mentioned air curtain barricade wall, on described air curtain barricade wall working surface, described air cleft also can be provided with along described air curtain barricade wall width.
Above-mentioned air curtain barricade wall, on described air curtain barricade wall working surface, the length of described air cleft is 0.05 millimeter (mm)-5 millimeter (mm).
Above-mentioned air curtain barricade wall, on described air curtain barricade wall working surface, the width of described air cleft is 0.05 millimeter (mm)-0.35 millimeter (mm).
Above-mentioned air curtain barricade wall on described air curtain barricade wall working surface, is spaced apart 0.1 millimeter (mm)-15 millimeter (mm) on same straight line between the adjacent air cleft.
Above-mentioned air curtain barricade wall, on described air curtain barricade wall working surface, the described air cleft that is not on same the straight line is parallel to each other.
Above-mentioned air curtain barricade wall is spaced apart 0.1 millimeter (mm)-15 millimeter (mm) between the adjacent parallel air cleft.
Above-mentioned air curtain barricade wall, described air curtain barricade wall adopt cast or machine to suppress.
Technique scheme of the present utility model has the following advantages compared to existing technology: (1) because air cleft is to be provided with along straight line parallel to each other on the air curtain barricade wall, and is interrupted between the air cleft that is located on the same line; Under the equal conditions, the dispersiveness of the quantity showed increased of feasible seam, seam obviously strengthens, the gas diversity is relatively good, the temperature of molten steel and the composition of molten steel in the even effectively tundish; Can impel inclusion floating, reduction molten steel inclusion content, raising molten steel purity in the molten steel on the other hand effectively, the air purge better effects if; And because many seam air feed, single seam is shorter, and each seam ejection gas flow is less, and the control of blowing is more prone to, and has avoided the secondary oxidation of molten steel and the generation of volume slag phenomenon.(2) the preferred air cleft of the utility model is provided with along the air curtain barricade wall length direction, length is 0.05 millimeter (mm)-5 millimeter (mm), width is 0.05 millimeter (mm)-0.35 millimeter (mm), be spaced apart 0.1 millimeter (mm)-15 millimeter (mm) on same straight line between the adjacent air cleft, be spaced apart 0.1 millimeter (mm)-15 millimeter (mm) between the adjacent parallel air cleft; Make seam setting more rationally, the Flexible Control of air purge better effects if, easier realization blow gas, and the production of barricade standardization more, be convenient to large-scale industrialization production, reduce the cost of barricade.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the utility model is provided with the air curtain barricade wall that is interrupted air cleft along length a plan structure schematic diagram;
Fig. 2 is the A-A profile of Fig. 1.
Reference numeral is expressed as among the figure: 1-air chamber, 2-air cleft, 3-air curtain barricade wall.
The specific embodiment
As shown in Figure 1, in the air curtain barricade wall 3 of present embodiment, be provided with air cleft 2 along air curtain barricade wall 3 length directions straight line parallel to each other, and be located on the same line between the adjacent air cleft 2 and be interrupted, the length of air cleft 2 is that 3 millimeters (mm), width are 0.15 millimeter (mm), distance between the adjacent parallel air cleft 2 is 1.6 millimeters (mm), being spaced apart on same straight line between the adjacent air cleft 21 millimeter (mm).During use the air curtain barricade wall 3 of present embodiment is installed on the bottom of tundish, and makes the length direction setting of the straight line at seam place along described air curtain barricade wall 3, air chamber 1 is communicated with the argon gas air supply pipe.Described air curtain barricade wall 3 can adopt cast or machine to suppress.In the present embodiment, owing to be provided with air cleft 2 at air curtain barricade wall 3 upper edges straight line parallel to each other, and be interrupted between the air cleft 2 that is located on the same line; Therefore dispersed obviously enhancing, the gas diversity of the quantity showed increased of present embodiment air cleft 2, air cleft 2 are relatively good, the air cleft of setting can prolong the time of staying, improvement flow direction, the minimizing slough of molten steel in tundish on the one hand effectively like this, thus the temperature of the interior molten steel of even effectively tundish and the composition of molten steel; Can impel inclusion floating, reduction molten steel inclusion content, raising molten steel purity in the molten steel on the other hand effectively, the air purge better effects if; And because many seam air feed, single seam is shorter, and each seam ejection gas flow is less, is easy to realize the air blowing Flexible Control, avoids the secondary oxidation of molten steel and the generation of volume slag phenomenon.Interval between the length of present embodiment air cleft, width and the adjacent air cleft is limited in certain scope, not only can improve molten steel flow field better, reach better air purge effect, realize better the Flexible Control of blowing, and make air curtain barricade wall 3 production standardization more, be convenient to large-scale industrialization production, reduced the cost of air curtain barricade wall 3.
Certainly, in other embodiments, the straight line at described air cleft 2 places also can as being interrupted the cloth seam in the utility model, can reach goal of the invention of the present utility model equally along the width setting of described air curtain barricade wall 3.
In other embodiments, the length of air cleft 2 can be any number between 0.05 millimeter (mm)-0.35 millimeter (mm) for any number between 0.05 millimeter (mm)-5 millimeter (mm), width, interval on same straight line between the adjacent air cleft 2 can be any number between 0.1 millimeter (mm)-15 millimeter (mm), and the interval between the adjacent parallel air cleft 2 can be any number between 0.1 millimeter (mm)-15 millimeter (mm).Air cleft within the above number range all can prolong the time of staying, improvement flow direction, the minimizing slough of molten steel in tundish effectively, thus the temperature of the interior molten steel of even effectively tundish and the composition of molten steel; And can impel inclusion floating in the molten steel effectively, reduce the molten steel inclusion content, improve molten steel purity, air purge better effects if; And because many seam air feed, single seam is shorter, and each seam ejection gas flow is less, can realize the Flexible Control of blowing, and avoids the secondary oxidation of molten steel and the generation of volume slag phenomenon.
Certainly in certain embodiments, less numerical value in the above-mentioned number range can be got in the length of air cleft 2, width and interval, for example the length of air cleft 2 is that 0.05 millimeter (mm), width are 0.05 millimeter (mm), being spaced apart on same straight line between the adjacent air cleft 2 0.1 millimeter (mm), being spaced apart between the adjacent parallel air cleft 2 0.1 millimeter (mm); Air cleft 2 is less and can more effectively impel inclusion floating than comparatively dense, brings better air purge effect, simultaneously can be better the evenly temperature and the composition of molten steel in the tundish, the Flexible Control that easier realization is blown; But production technology more complicated, production cost also can correspondingly improve.Numerical value bigger in the above-mentioned number range also can be got in the length of air cleft 2, width and interval, for example the length of air cleft 2 is that 5 millimeters (mm), width are 0.35 millimeter (mm), being spaced apart on same straight line between the adjacent air cleft 2 15 millimeters (mm), being spaced apart between the adjacent parallel air cleft 2 15 millimeters (mm); Air cleft 2 is become estranged more greatly and relatively, can realize goal of the invention of the present utility model equally, promptly reach above-mentioned technique effect, it is less and than comparatively dense to compare air cleft, production technology is fairly simple, production cost is lower, simultaneously, also can effectively avoid wide air cleft to cause bleed-out, guarantee production safety.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (9)
1. one kind is interrupted the air curtain barricade wall that cloth stitches, form the air cleft (2) of air chamber (1) and described air chamber of connection (1) and described air curtain barricade wall working surface in the described air curtain barricade wall (3), it is characterized in that: on described air curtain barricade wall (3) working surface, the air cleft that is located on the same line is interrupted between (2).
2. air curtain barricade wall according to claim 1 is characterized in that: on described air curtain barricade wall (3) working surface, described interruption air cleft (2) is along described air curtain barricade wall (3) length direction setting.
3. air curtain barricade wall according to claim 1 is characterized in that: on described air curtain barricade wall (3) working surface, described interruption air cleft (2) is along described air curtain barricade wall (3) width setting.
4. according to claim 1 or 2 or 3 described air curtain barricade walls, it is characterized in that: on described air curtain barricade wall (3) working surface, the length of described air cleft (2) is 0.05 millimeter-5 millimeters.
5. according to claim 1 or 2 or 3 described air curtain barricade walls, it is characterized in that: on described air curtain barricade wall (3) working surface, the width of described air cleft (2) is 0.05 millimeter-0.35 millimeter.
6. according to claim 1 or 2 or 3 described air curtain barricade walls, it is characterized in that: on described air curtain barricade wall (3) working surface, be spaced apart 0.1 millimeter-15 millimeters on same straight line between the adjacent air cleft (2).
7. according to claim 1 or 2 or 3 described air curtain barricade walls, it is characterized in that: on described air curtain barricade wall (3) working surface, the described air cleft (2) that is not on same the straight line is parallel to each other.
8. air curtain barricade wall according to claim 7 is characterized in that: be spaced apart 0.1 millimeter-15 millimeters between the adjacent parallel air cleft (2).
9. according to claim 1 or 2 or 3 described air curtain barricade walls, it is characterized in that: described air curtain barricade wall (3) adopts cast or machine to suppress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200048246U CN201186340Y (en) | 2008-03-14 | 2008-03-14 | Gas curtain with intermittent seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200048246U CN201186340Y (en) | 2008-03-14 | 2008-03-14 | Gas curtain with intermittent seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201186340Y true CN201186340Y (en) | 2009-01-28 |
Family
ID=40309356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200048246U Expired - Fee Related CN201186340Y (en) | 2008-03-14 | 2008-03-14 | Gas curtain with intermittent seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201186340Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598428A (en) * | 2016-02-24 | 2016-05-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Double-layer air curtain retaining wall and manufacturing method thereof |
| WO2020020069A1 (en) | 2018-07-24 | 2020-01-30 | 宝山钢铁股份有限公司 | Tundish |
-
2008
- 2008-03-14 CN CNU2008200048246U patent/CN201186340Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598428A (en) * | 2016-02-24 | 2016-05-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Double-layer air curtain retaining wall and manufacturing method thereof |
| WO2020020069A1 (en) | 2018-07-24 | 2020-01-30 | 宝山钢铁股份有限公司 | Tundish |
| US11684969B2 (en) | 2018-07-24 | 2023-06-27 | Baoshan Iron & Steel Co., Ltd. | Tundish |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20160314 |