CN201070670Y - Air curtain retaining wall and liquid steel gas-washing device having the retaining wall - Google Patents
Air curtain retaining wall and liquid steel gas-washing device having the retaining wall Download PDFInfo
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- CN201070670Y CN201070670Y CNU2007201514578U CN200720151457U CN201070670Y CN 201070670 Y CN201070670 Y CN 201070670Y CN U2007201514578 U CNU2007201514578 U CN U2007201514578U CN 200720151457 U CN200720151457 U CN 200720151457U CN 201070670 Y CN201070670 Y CN 201070670Y
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- wall
- air curtain
- curtain barricade
- described body
- connecting hole
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Abstract
A gas curtain retaining wall is provided with walls (41) made of breathable materials. The walls (41) are connected with an argon gas supply source. The walls (41) are annular bodies with openings. The walls (41) are connected with the argon gas supply source by connecting holes (404) molding on the argon gas supply source. The gas curtain retaining wall is respectively applied to shunt draft tubes (30) which extend towards the two sides from tundish blocking slag walls (20). A plurality of diffluence passes (32) are molded along the extending direction by the interval. Two ends (401,402) of the walls (41) reach and resist the side walls of the shunt tube near to the corresponding diffluence passes (32) in order to form a close annular region.
Description
Technical field
The utility model relates to the treating apparatus of motlten metal in the supply process, specifically a kind of air curtain barricade wall and the molten steel air purge device with this barricade.
Background technology
It is big to exist mean residence time and the time difference in distribution of injecting the stream molten steel arrival mouth of a river, medial and lateral for continuous casting multithread square billet tundish, particularly when adopting the tundish of five streams, six streams, eight streams, the stroke at the mouth of a river was long outside invar water arrived, molten steel arrives short, the time weak point of stroke at the inboard mouth of a river comparatively speaking, impurity in the molten steel and gas have little time to get rid of, and cause the billet quality of inboard mouth of a river cast undesirable.
Adopt retaining dam and argon gas air curtain to remove that impurity has been known in the molten steel in the tundish.For example in Chinese patent literature CN2863314Y, just disclose about tundish air blowing retaining dam, it installs air brick in common retaining dam, air brick links to each other with air chamber, air chamber is connected by the external argon gas pipeline of metallic conduit and tundish, on being installed at the bottom of the bag between barricade and the middle water containing opening during use, can play retaining dam change molten steel flow field and argon gas simultaneously and stir the double action that molten steel is removed the molten steel field trash, being applicable to needs blowing argon gas to stir molten steel to reduce the continuous casting tundish of molten steel inclusion content, raising molten steel cleanliness factor.
Yet common in-line air curtain barricade wall is for the tundish with a plurality of diffluence pass or mouth of a river, and the utilization rate of its gas is not high.This is the molten steel that flows out or flow into to the mouth of a river because of from diffluence pass, and its main flow of its Flow Field Distribution has just been passed through part integral body the in-line air curtain barricade wall is set, and the air curtain of quite a few formation air curtain barricade wall does not then play much effects and fallen with regard to loss.This part air curtain is not utilized fully and is caused the waste of gas.If respectively at whenever having a diffluence pass or the mouth of a river that an in-line air curtain barricade wall is set, then can not carry out air purge to the molten steel of main flow part, be difficult to reach the effect of fully molten steel being carried out air purge.
Summary of the invention
For this reason, technical problem to be solved in the utility model is: propose a kind of air curtain barricade wall and the molten steel air purge device with this barricade that can solve economically the complete air purge of molten steel that injects.
For solving the problems of the technologies described above, a kind of air curtain barricade wall of the present utility model has the body of wall that gas permeable material is made; Described body of wall links to each other with the argon gas source of supply; It is characterized by described body of wall is the annular with opening, and described body of wall links to each other with described argon gas source of supply by moulding connecting hole thereon.
The inside of described body of wall forms the duct that is connected with described connecting hole, and described duct is sealed at the two ends of described body of wall.
Wherein, described connecting hole is a screwed hole.
The two ends of described body of wall are towards same direction.
Form a projection that stretches out from described body of wall in the direction opposite with described opening, described connecting hole is molded on the described projection.
Further, described body of wall is the U font, and described projection stretches out in the middle of the U of described body of wall font bottom.
The utility model further proposes a kind of molten steel air purge device with air curtain barricade wall, comprises
Lead isocon from the injection of tundish stream district to what both sides stretched, the described isocon of leading is distinguished with the injection stream of tundish and is communicated with by being molded over through hole on the described slag blocking wall;
At described several diffluence pass that has of leading its direction moulding respectively that stretches of isocon upper edge;
It is characterized in that:
Corresponding each diffluence pass is respectively arranged with air curtain barricade wall, and described air curtain barricade wall has the body of wall that gas permeable material is made; Described body of wall is the annular with opening, and described body of wall links to each other with described argon gas source of supply by moulding connecting hole thereon; The two ends of described body of wall abut near the described isocon of corresponding diffluence pass, to constitute the annular region of a sealing.
The another kind that the utility model proposes has the molten steel air purge device of air curtain barricade wall, comprises
The air curtain barricade wall that is provided with respectively at each place, mouth of a river of the tundish with at least two mouths of a river; Described air curtain barricade wall has the body of wall that gas permeable material is made; Described body of wall is the annular with opening, and described body of wall links to each other with described argon gas source of supply by moulding connecting hole thereon.
By molten steel of the present utility model, lead air curtain barricade wall of arranging at each diffluence pass place of isocon or the air curtain barricade wall that is provided with at place, the mouth of a river owing to flow through, and lead isocon and air curtain barricade wall all is that high-grade refractory material is made, certain height is arranged.Form a relative partial closure district, prolonged the time of staying at the molten steel arrival mouth of a river; The argon gas curtain of air curtain barricade wall of the present utility model ejection also seal, all will pass through air purge by leading the molten steel that diffluence pass flows out or the molten steel at the inflow mouth of a river, does not have the dead angle, and the field trash of larger particles can both float and enter in the slag in the molten steel.Therefore, adopt this kind to lead the multithread tundish of dividing technology, its metallurgical effect can reach comparatively ideal degree.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is for to lead the schematic top plan view of part flow arrangement tundish by the molten steel with air curtain barricade wall of preferred embodiment of the present invention;
Fig. 2 a is in order to the schematic diagram of leading isocon in the presentation graphs 1, and it is the view along one side of the left side among Fig. 1 over against the horizontal direction of diffluence pass,
Fig. 2 b is along the cutaway view of the direction of arrow among Fig. 2 a, to show the cross sectional shape of diffluence pass;
Fig. 3 a is the vertical view in order to the triadius type air curtain barricade wall in the presentation graphs 1;
Fig. 3 b is the partial view that the width of cloth along the horizontal direction of this Fig. 3 a partial top view has amplified;
Fig. 4 is the schematic top plan view of the tundish with air curtain barricade wall of another embodiment of the present utility model;
Mansion view when Fig. 5 a air curtain barricade wall cooperates with the mouth of a river
Front view when Fig. 5 b air curtain cloth barricade cooperates with the mouth of a river.
Reference numeral is expressed as among the figure: the body of 1-tundish, and the 2-mouth of a river, 3-injects stream district, 4-pouring area, 20-slag blocking wall, 30-leads isocon, 32-diffluence pass, 40-air curtain barricade wall, 41-body of wall, the 43-duct, 44-projection, 401, the both ends of 402-body of wall, 404-connecting hole.
The specific embodiment
Now the air curtain barricade wall that suitable square billet tundish of the present utility model is used is described in more detailed mode.Those skilled in the art can therefrom recognize potential other many purposes and the advantages among the present invention.
As shown in fig. 1, lead the tundish of part flow arrangement for a molten steel with six diffluence pass of the present invention that exemplifies.Be shown as the schematic top plan view of this tundish among Fig. 1.The slotted body 1 that comprises symmetric shape, with the mouth of a river 2 that is arranged on body 1 bottom surface, a slag blocking wall 20 wherein is set at the middle part of described slotted body 1 inside groove described inside groove is divided into injection stream district 3 and pouring area 4, described injection stream district 3 is in described inside groove middle part, and the mouth of a river 2 on described body 1 bottom surface is in described pouring area 4; Be provided with in abutting connection with described slag blocking wall 20 and to what extended both sides at described pouring area 4 and lead isocon 30; On described slag blocking wall 20, form and be communicated with described injection stream district 3 and described through hole of leading isocon 30 inner chambers; Form described isocon 30 inner chambers and described pouring area 4 other the regional diffluence pass 32 of leading of connection on isocon 30 sidewalls described leading.The described respectively corresponding setting of leading on the isocon 30 between per two mouths of a river 2 of described diffluence pass 32 of every side.Self-evident, Zhou Fanyu molten steel contact position all is equipped with resistant to elevated temperatures refractory material in the body 1.
Shown in Fig. 2 a is a kind of schematic diagram of leading isocon 30 configurations that is applicable to six stream molten steel, and Fig. 2 b is a width of cloth explanatory view of the horizontal direction along one side of the left side among Fig. 1 over against diffluence pass 32.
Tundish also includes each diffluence pass 32 each corresponding air curtain barricade wall that join 40 of leading isocon 30 with this.Described air curtain barricade wall 40 has the body of wall 41 that gas permeable material is made; Described body of wall 41 links to each other with source of the gas; Wherein said body of wall 41 is for to have the annular of opening, and described body of wall 41 links to each other with described source of the gas by moulding connecting hole 404 thereon.In the embodiment shown in fig. 3, described body of wall 41 vertical views are U type substantially, (see Fig. 3 a).The two ends 401,402 of described body of wall 41 are towards same direction.The both ends 401,402 of described body of wall 41 abut to describedly leads near the corresponding diffluence pass 32 of isocon 30 described and leads on the sidewall outside of isocon 30, to constitute the isolated area of a sealing.For present embodiment, referring to Fig. 3, the inside of described body of wall 41 forms the duct 43 that is connected with described connecting hole 404, and described duct 43 is sealed at the place, two ends near described body of wall 41.Form a projection 44 that stretches out from described body of wall 41 in the direction opposite with described opening, described connecting hole 404 is molded on the described projection 44, and shown in Fig. 3 a, the vertical view of the described air curtain barricade wall 40 of present embodiment is the Y type on the whole substantially.The connecting hole 404 that joins with external air source is screwed hole.
During operation, around the isolated area of this sealing, can form the curtain barricade of an air-flow.Via leading part flow arrangement, the molten steel from diffluence pass 32 flows out again through the air purge of air curtain barricade wall 40 air curtains, then can make the non-metallic inclusion come-up enter in the slag, and the metallurgical effect of tundish is improved, and the billet quality that order is produced is improved.
Another specific embodiment of molten steel air purge device with described air curtain barricade wall 40 of the present utility model in the present embodiment, has been cancelled the part flow arrangement of leading among the last embodiment referring to Fig. 4 and Fig. 5 a and Fig. 5 b.In tundish,, 40 pairs of described mouths of a river 2 of described air curtain barricade wall are constituted partly surround shape at the air curtain barricade wall 40 that each 2 places, mouth of a river are provided with respectively with at least two mouths of a river 2.Described air curtain barricade wall 40 has the body of wall 41 that gas permeable material is made; Described body of wall 41 is for having the U-shaped of opening, and described body of wall 41 links to each other with described argon gas source of supply by moulding connecting hole 404 thereon.
Though, in the present embodiment, the annular of opening during described air curtain barricade wall 40, around the described mouth of a river 2, do not constitute an enclosed areas, but because gas has certain diversity in the process that enters molten steel and rise, thereby after gas sprays, form the air curtain wall of a base closed soon from air curtain barricade wall 40.Thereby, still can realize molten steel is carried out the effect of effective air purge for present embodiment.
For the technical staff in described field, on the basis of the foregoing description, can make some conspicuous changes.As described in body of wall 41 length of air curtain barricade wall 40 short in, described duct 43 can be set, gas is air-vents transmission and the discharging by described body of wall 41 itself directly; For another example, described connecting hole 404 is molded directly within on the body of wall 41 and the projection 44 that do not need to stretch out from described body of wall 41; As for the plan view shape of described body of wall 41, above-mentioned U font can be replaced a position V-shape, semi-circular, semiellipse type or parabolic type or the like.
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 (8)
1. an air curtain barricade wall has the body of wall (41) that gas permeable material is made; Described body of wall (41) links to each other with source of the gas; It is characterized in that: for to have the Y shape of opening, described body of wall (41) links to each other with described source of the gas by moulding connecting hole (404) thereon described body of wall (41).
2. air curtain barricade wall according to claim 1 is characterized in that: the inside of described body of wall (41) forms the duct (43) that is connected with described connecting hole (404), and described duct (43) are sealed at the two ends of described body of wall (41).
3. air curtain barricade wall according to claim 1 is characterized in that: described connecting hole (404) is a screwed hole.
4. air curtain barricade wall according to claim 2 is characterized in that: the two ends of described body of wall (41) are towards same direction.
5. according to any described air curtain barricade wall in the claim 1 to 4, it is characterized in that: form a projection (44) that stretches out from described body of wall (41) in the direction opposite with described opening, described connecting hole (404) is molded on the described projection (44).
6. air curtain barricade wall according to claim 5 is characterized in that: described body of wall (41) is the U font, and described projection (44) stretches out in the middle of the U font bottom of described body of wall (41).
7. the molten steel air purge device with any described air curtain barricade wall in the claim 1 to 6 comprises
Lead isocon (30) from the injection of tundish stream district to what both sides stretched, the described isocon (30) of leading connects and injects stream district (3) and pouring area; Described lead prolong its direction moulding respectively that stretches on the isocon (30) several diffluence pass (32) are arranged;
It is characterized in that:
Corresponding each diffluence pass is respectively arranged with air curtain barricade wall (40), and described air curtain barricade wall (40) has the body of wall (41) that gas permeable material is made; For to have the annular of opening, described body of wall (41) links to each other with described source of the gas by moulding connecting hole (404) thereon described body of wall (41); The two ends (401,402) of described body of wall (41) abut near the described isocon sidewall of corresponding diffluence pass (32), to constitute the annular region of a sealing.
8. the molten steel air purge device with any described air curtain barricade wall in the claim 1 to 6 is characterized in that comprising
Locate to be provided with respectively described air curtain barricade wall (40) at each mouth of a river of tundish (2) with at least two mouths of a river (2); Described air curtain barricade wall (40) has the body of wall (41) that gas permeable material is made; For to have the annular of opening, described body of wall (41) links to each other with described source of the gas by moulding connecting hole (404) thereon described body of wall (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201514578U CN201070670Y (en) | 2007-06-28 | 2007-06-28 | Air curtain retaining wall and liquid steel gas-washing device having the retaining wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201514578U CN201070670Y (en) | 2007-06-28 | 2007-06-28 | Air curtain retaining wall and liquid steel gas-washing device having the retaining wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201070670Y true CN201070670Y (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201514578U Expired - Fee Related CN201070670Y (en) | 2007-06-28 | 2007-06-28 | Air curtain retaining wall and liquid steel gas-washing device having the retaining wall |
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|---|---|
| CN (1) | CN201070670Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101502877B (en) * | 2009-02-27 | 2010-10-13 | 莱芜钢铁股份有限公司 | Baffle for special-shaped blank continuous casting machine tundish and preparation method thereof |
| CN105598429A (en) * | 2016-02-24 | 2016-05-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Gradient air curtain retaining wall and manufacturing method thereof |
| CN110918962A (en) * | 2019-11-18 | 2020-03-27 | 张家港宏昌钢板有限公司 | Retaining wall type continuous casting tundish |
| CN112024862A (en) * | 2020-08-21 | 2020-12-04 | 大冶特殊钢有限公司 | Preparation method of tundish permanent lining and construction tire membrane thereof |
-
2007
- 2007-06-28 CN CNU2007201514578U patent/CN201070670Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101502877B (en) * | 2009-02-27 | 2010-10-13 | 莱芜钢铁股份有限公司 | Baffle for special-shaped blank continuous casting machine tundish and preparation method thereof |
| CN105598429A (en) * | 2016-02-24 | 2016-05-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Gradient air curtain retaining wall and manufacturing method thereof |
| CN110918962A (en) * | 2019-11-18 | 2020-03-27 | 张家港宏昌钢板有限公司 | Retaining wall type continuous casting tundish |
| CN112024862A (en) * | 2020-08-21 | 2020-12-04 | 大冶特殊钢有限公司 | Preparation method of tundish permanent lining and construction tire membrane thereof |
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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: 20080611 Termination date: 20160628 |