CN204035550U - The device that continuous casting intermediate inlet is protected with sealed argon-blowing - Google Patents
The device that continuous casting intermediate inlet is protected with sealed argon-blowing Download PDFInfo
- Publication number
- CN204035550U CN204035550U CN201420432902.8U CN201420432902U CN204035550U CN 204035550 U CN204035550 U CN 204035550U CN 201420432902 U CN201420432902 U CN 201420432902U CN 204035550 U CN204035550 U CN 204035550U
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- China
- Prior art keywords
- retaining ring
- lock part
- tight lock
- tundish
- nozzle
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- Treatment Of Steel In Its Molten State (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model discloses the device of a kind of continuous casting intermediate inlet sealed argon-blowing protection.This device comprises protection casing and retaining ring, and wherein, protection casing comprises box-like body portion and tight lock part; The outer surface that retaining ring is set in described tight lock part coordinates to make described retaining ring be connected with described tight lock part, and the position of described retaining ring on described tight lock part is adjustable.Tundish upper nozzle and submersed nozzle cooperation place can cover into wherein by this device; solve this difficult problem of the tight suck secondary oxidation of steel of tundish upper nozzle and submersed nozzle fitted seal in continuous casting production well; achieve non-oxidation molding casting; which greatly reduce molten steel suck situation in basket pouring process; reduce molten steel O, N gas content; improve the degree of purity of molten steel, improve slab quality, improve stocking end properties.
Description
Technical field
The utility model relates to the device of a kind of continuous casting intermediate inlet sealed argon-blowing protection, belongs to metallurgical production continuous casting technology field.
Background technology
At present; in continuous casting production process; basket pouring generally adopts tundish upper nozzle and submersed nozzle mating protection to pour into a mould; the seam crossing of the two easy invar stream withdrawing air and cause secondary oxidation like this; be everlasting at present tundish upper nozzle and submersed nozzle cooperation place adds sealing gasket protection; or carry out blowing argon gas protection in immersion water gap bowl portion, but all there is wretched insufficiency in above-mentioned two kinds of measures in actual use.Add the impact that sealing gasket protection is subject to tundish upper nozzle, submersed nozzle machining accuracy and thrust; fit clearance cannot be eliminated; can not effectively avoid inspiratory phenomenon in casting process; and during the protection of immersion water gap bowl portion blowing argon gas; argon gas amount hour does not have argon shield effect; easily cause mold liquid level to turn over coil of strip slag when argon is large-minded, basket pouring protected effect is all undesirable.
Therefore, develop a kind of very necessary for the device playing sealed argon-blowing protective effect between tundish upper nozzle and immersion water.
Summary of the invention
For the defect of prior art, the purpose of this utility model is the device providing a kind of continuous casting intermediate inlet sealed argon-blowing to protect.This device can solve the problem of basket pouring protected effect difference well, can form argon shield atmosphere by this device at tundish upper nozzle and tundish immersed nozzle cooperation place, and isolated air, stops air-breathing secondary oxidation, nitrogen pick-up.
To achieve these goals, the utility model have employed following technical scheme:
A device for continuous casting intermediate inlet sealed argon-blowing protection, comprising:
Protection casing, comprises box-like body portion and tight lock part; Described box-like body portion comprises the diapire that a centre has opening portion and the sidewall extended upward from bottom wall edge portion, described sidewall is fixed on outside tundish around tundish upper nozzle and wraps at the end, and make described tundish upper nozzle pass from described opening portion, the outside of described tight lock part from the edge of described opening portion to described box-like body portion extends to above the delivery port end of tundish upper nozzle;
Retaining ring, the outer surface being set in described tight lock part coordinates to make described retaining ring be connected with described tight lock part, and the position of described retaining ring on described tight lock part is adjustable, when being positioned at described tight lock part the latter half with the upper end of the described retaining ring of box lunch, the cooperation place of described tundish upper nozzle and submersed nozzle covers by described retaining ring completely, thus forms opposing seal space in the cooperation place of described tundish upper nozzle and described submersed nozzle; When the upper end of described retaining ring is positioned at described tight lock part the first half, the cooperation place of described tundish upper nozzle and described submersed nozzle is exposed completely, so that described submersed nozzle of seting out.
In said apparatus, as a kind of preferred embodiment, the free edge of described box-like body portion sidewall is fixed on outside described tundish by flange and wraps at the end.More preferably, wrap outside described flange and described tundish at the end and be provided with one deck asbestos fibre pad.
In said apparatus, as a kind of preferred embodiment, the sidewall in described box-like body portion is provided with argon blowing hole, more preferably, described argon blowing hole is symmetricly set on the sidewall in described box-like body portion, and described argon blowing hole is more preferably two.
In said apparatus, as a kind of preferred embodiment, described tight lock part is connected cooperation with described retaining ring by the mode be spirally connected.More preferably, the fit clearance between described tight lock part and described retaining ring is not less than 1mm.
In said apparatus, as a kind of preferred embodiment, described tight lock part is connected cooperation with described retaining ring by the mode of upper and lower push-and-pull, wherein, described tight lock part and described retaining ring are the pyramidal structure with hollow cavity, described retaining ring is set in described tight lock part outer surface, and described retaining ring is slidably on described tight lock part, and described retaining ring upper internal diameter size is less than described tight lock part end opening outside dimension.
In said apparatus, as a kind of preferred embodiment, described tight lock part length is 60-80mm, and described retaining ring length is 50-70mm.
A kind of method of continuous casting intermediate inlet sealed argon-blowing protection, the method adopts said apparatus, specific as follows: first retaining ring to be adjusted upward until come out completely in the position making tundish upper nozzle match with submersed nozzle, then described submersed nozzle is hung on described tundish upper nozzle, afterwards described retaining ring is adjusted downwards until make described retaining ring cover the cooperation place of described tundish upper nozzle and submersed nozzle completely, thus form opposing seal space in the cooperation place of described tundish upper nozzle and described submersed nozzle, then by the argon blowing hole on box-like body portion sidewall to Argon in described opposing seal space.Preferably, described argon pressure is 0.1-0.3Mpa, and argon flow amount is 3-5m
3/ h.
Tundish upper nozzle and submersed nozzle cooperation place cover into wherein by device of the present utility model; solve this difficult problem of the tight suck secondary oxidation of steel of tundish upper nozzle and submersed nozzle fitted seal in continuous casting production well; achieve non-oxidation molding casting; be mainly used in continuous casting production molding casting; to improve slab quality; which greatly reduce molten steel suck situation in basket pouring process; reduce molten steel O, N gas content; improve the degree of purity of molten steel; improve slab quality, improve stocking end properties.In addition, device of the present utility model installs simple, use, workable, can make specific design, meet field requirement as far as possible, conveniently adjust maintenance according to the tundish of different structure, tundish upper nozzle and submersed nozzle.
The essenceization that the utility model method achieves basket pouring protection is improved, and basket pouring protected effect is excellent, nitrogen increased amount≤3ppm, oxygenation amount≤5ppm.
Accompanying drawing explanation
Fig. 1 is the protection casing figure of the utility model one embodiment.
Fig. 2 is the retaining ring figure of the utility model one embodiment.
Schematic diagram when Fig. 3 is the use of the utility model device.
Fig. 4 is the protection casing of another embodiment of the utility model and the structure chart of retaining ring.
Wherein, description of reference numerals is as follows: 1, protect casing; 11, box-like body portion; 12, tight lock part; 111, diapire; 112, sidewall; 113, opening portion; 121, external screw thread; 3, argon blowing hole; 4, flange; 2, retaining ring; 21, internal thread; 6, screw; 7, tundish upper nozzle; 8, at the bottom of middle handbag; 9, asbestos fibre pad; 10, submersed nozzle; 2 ', retaining ring; 12 ', tight lock part.
Detailed description of the invention
In order to make technical characteristic of the present utility model, advantage embodied better, is described in detail to the utility model by following detailed description of the invention.
The device of continuous casting intermediate inlet sealed argon-blowing that the utility model provides protection comprises: protection casing 1 and with protection casing 1 with the use of retaining ring 2, see Fig. 1,2 and 4.The cooperation place of tundish upper nozzle and submersed nozzle can cover to form opposing seal space by this device, is described one by one below by each parts of this device.
See Fig. 1 and Fig. 3, protection casing 1, be made up of box-like body portion 11 and tight lock part 12, wherein, box-like body portion 11 comprises the diapire 111 that a centre has opening portion 113 and the sidewall 112 extended upward from diapire 111 edge part, the described sidewall 112 in described box-like body portion 11 is fixed on outside tundish around tundish upper nozzle 7 and wraps at the end 8, and the size of opening portion 113 ensures to make tundish upper nozzle 7 extend there through, tight lock part 12 extends to the top, delivery port end (i.e. tundish upper nozzle 7 match with submersed nozzle 10 position) of tundish upper nozzle 7 outside box-like body portion 11 from the edge of opening portion 113, the sidewall 112 in box-like body portion 11 is provided with argon blowing hole 3.In order to strengthen fixed effect, the free end of described sidewall 112 is fixed on outside tundish by flange 4 and wraps at the end 8.In addition, in order to ensure the sealing effectiveness of whole device, wrapping outside flange 4 and tundish at the end 8 and one deck asbestos fibre pad 9 is preferably set.Preferably, argon blowing hole 3 is symmetricly set on the sidewall 112 in box-like body portion 11, can ensure the uniformity of Argon like this.
Particularly, box-like body portion 11 can be cuboid, also can be tubular, tight lock part 12 is generally has the cylindrical of hollow cavity, in embodiment of the present utility model, box-like body portion 11 is the cuboid box of cuboid without upper bottom surface and uncovered, and the bottom surface of this cuboid has a circular open portion 113, the diameter in this circular open portion 113 is slightly larger than the diameter of tundish upper nozzle 7, can pass from this opening portion 113 to make tundish upper nozzle 7, this bottom surface extends to above the delivery port end of tundish upper nozzle 7 from the edge (namely immediately below box-like body portion 11) outside box-like body portion 11 of circular opening portion 113, to form the hollow cylindrical tight lock part 12 of this embodiment, above the delivery port the end why bottom of tight lock part 12 is designed to be positioned at tundish upper nozzle 7 and near the delivery port end of tundish upper nozzle 7, that is, the sidewalls flex of tundish upper nozzle 7 does not cover by tight lock part 12 completely, object is for the ease of dislodging submersed nozzle 10.Tight lock part 12 outer surface being provided with external screw thread 121, for matching with the internal thread 21 of retaining ring 2, rotation can being carried out and up-down adjustment on tight lock part 12 to make retaining ring 2.Two argon blowing holes 3 are symmetricly set on the sidewall 112 in box-like body portion 11, and argon blowing hole 3 is connected with argon gas pipeline flexible pipe, to pass into argon gas in the utility model device.In addition, in this embodiment, in order to ensure the sealing effectiveness of whole device, when the utility model device is fixed on the outside of at the bottom of middle handbag 8 by flange 4, at the bottom of flange 4 and middle handbag outside 8 between be provided with one deck asbestos fibre pad 9, and flange 4 to be fixed at the bottom of middle handbag outside 8 by screw 6.
Retaining ring 2, the outer surface being set in described tight lock part coordinates to make described retaining ring be connected with tight lock part 12, the position of retaining ring 2 on tight lock part 12 is adjustable, when being positioned at tight lock part 12 the latter half with the upper end of convenient retaining ring 2, the cooperation place of tundish upper nozzle 7 and submersed nozzle 10 covers by retaining ring 2 completely, forms opposing seal space to make the cooperation place of tundish upper nozzle 7 and submersed nozzle 10; When the upper end of retaining ring 2 is positioned at tight lock part 12 the first half, the cooperation place of tundish upper nozzle 7 and submersed nozzle 10 is exposed completely, so that dislodging submersed nozzle 10.Preferably, tight lock part 12 is connected cooperation with retaining ring 2 by the mode be spirally connected, in addition, in order to prevent tight lock part 12 and retaining ring 2 expanded by heating in use procedure and cannot rotate, fit clearance between tight lock part 12 and retaining ring 2 is preferably not less than 1mm, can be such as 1mm, 1.5mm or 2mm etc.In order to realize the adjustment of wide region, tight lock part length can be set to 60-80mm, and the length of retaining ring can be set to 50-70mm.
Particularly, in embodiment of the present utility model, the inner surface of retaining ring 2 with the internal thread matched with tight lock part 2, see Fig. 2.In order to make whole device play sealing function better, the bottom of retaining ring 2 extend horizontally away one section of flange, to stop the space between retaining ring 2 lower port and submersed nozzle 10 to the inner side of retaining ring 2.Fit clearance between tight lock part 12 and retaining ring 2 is 1mm.When retaining ring 2 rotates a high position (i.e. the first half of tight lock part 12) to tight lock part 12, can so that dislodging submersed nozzle 10.When tundish is normally poured into a mould, retaining ring 2 rotates the low level (i.e. the latter half of tight lock part 12) to tight lock part 12, covers or protect tundish upper nozzle 7 and tundish immersed nozzle 10 cooperation place.
In another embodiment of the present utility model; except the structure of tight lock part and retaining ring and fit system; the miscellaneous part of continuous casting intermediate inlet sealed argon-blowing protective device is described above; this is no longer going to repeat them, is only described in detail to the tight lock part 12 ' of the present embodiment and the structure of retaining ring 2 ' and fit system below.
Particularly, in the present embodiment, tight lock part 12 ' is connected cooperation, see Fig. 4 with retaining ring 2 ' by the mode of upper and lower push-and-pull.Tight lock part 12 ' is for having the pyramidal structure of hollow cavity, its edge from circular opening portion 113 (namely immediately below box-like body portion 11) outside box-like body portion 11 extends to above the delivery port end of tundish upper nozzle 7, the part of this pyramidal structure near the delivery port end of tundish upper nozzle 7 and tight lock part 12 ' lower internal diameter size are greater than part near circular open portion 113 and tight lock part upper internal diameter size, that is, this tapered portion is upright taper.Retaining ring 2 ' is for being set in the conical part with hollow cavity of tight lock part 12 ' outer surface, this retaining ring 2 ' can by the mode of upper and lower push-and-pull in the upper slip of tight lock part 12 ', and this retaining ring 2 ' upper internal diameter is less than tight lock part 12 ' end opening outside dimension, thus ensure when retaining ring 2 ' is suitable for reading slide to tight lock part 12 ' end opening position time and do not come off from tight lock part 12 '.In this embodiment, the tapering of retaining ring 2 ' will match with the tapering of tight lock part 12 ', thus coordinating of tight lock part and retaining ring can be ensured by the deadweight of retaining ring 2 ', therefore, by suitable for reading for retaining ring 2 ' be pushed into tight lock part 12 ' top time, can to set out easily submersed nozzle 10, by suitable for reading for retaining ring 2 ' be pulled to tight lock part 12 ' bottom time can ensure that again the cooperation place of tundish upper nozzle 7 and submersed nozzle 10 covers by retaining ring 2 ' completely, with make tundish upper nozzle 7 and submersed nozzle 10 cooperation place formed opposing seal space.Tight lock part and the retaining ring of processing this structure are convenient.
Protection casing 1 can adopt the steel plate of 3-5mm thickness to make, and retaining ring can adopt the thick steel pipe of 6-8mm to make.
Below the method for continuous casting intermediate inlet sealed argon-blowing protection and the using method of the utility model device are described, specific as follows:
Open before watering, first retaining ring 2 will be adjusted to a high position and the first half of tight lock part 12, come out completely in the position that tundish upper nozzle 7 is matched with submersed nozzle 10, then submersed nozzle 7 is hung on tundish upper nozzle 7, afterwards retaining ring 2 is adjusted to low level and the latter half of tight lock part 12 downwards, retaining ring 2 is made to cover the cooperation place of tundish upper nozzle 7 and submersed nozzle 10 completely, thus form opposing seal space in the cooperation place of tundish upper nozzle 7 and submersed nozzle 10, then by the argon blowing hole on box-like body portion sidewall to Argon in this opposing seal space i.e. this device, adjust suitable argon gas amount, preferred argon pressure is 0.1-0.3Mpa, argon flow amount is 3-5m
3/ h.The utility model overcomes the defect that existing argon gas amount hour does not have argon shield effect, and the utility model only adopts less argon gas amount can realize good basket pouring protected effect, nitrogen increased amount≤3ppm, oxygenation amount≤5ppm.
Comprehensive above description; the utility model is the problem solving basket pouring protected effect difference; device of the present utility model is provided with at beam tundish bottom; thus argon shield atmosphere can be formed at tundish upper nozzle and tundish immersed nozzle cooperation place; isolated air; stop air-breathing secondary oxidation, nitrogen pick-up; achieve non-oxidation molding casting; greatly reduce molten steel suck situation in basket pouring process; reduce molten steel O, N gas content; improve the degree of purity of molten steel, improve slab quality, improve stocking end properties.
Although be enumerated above example to be described the utility model device; but it does not limit the utility model protection domain; the utility model device can make specific design according to the tundish of different structure, tundish upper nozzle and submersed nozzle; meet field requirement as far as possible, conveniently adjust maintenance.
Should be appreciated that above-described embodiment is only not intended to for illustration of the utility model limit protection domain of the present utility model.In addition; also should understand; after having read technology contents of the present utility model, those skilled in the art can make various change, amendment and/or modification to the utility model, and these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.
Claims (10)
1. the device protected with sealed argon-blowing of continuous casting intermediate inlet, is characterized in that, comprising:
Protection casing, comprises box-like body portion and tight lock part; Described box-like body portion comprises the diapire that a centre has opening portion and the sidewall extended upward from bottom wall edge portion, described sidewall is fixed on outside tundish around tundish upper nozzle and wraps at the end, and make described tundish upper nozzle pass from described opening portion, the outside of described tight lock part from the edge of described opening portion to described box-like body portion extends to above the delivery port end of tundish upper nozzle;
Retaining ring, the outer surface being set in described tight lock part coordinates to make described retaining ring be connected with described tight lock part, and the position of described retaining ring on described tight lock part is adjustable, when being positioned at described tight lock part the latter half with the upper end of the described retaining ring of box lunch, the cooperation place of described tundish upper nozzle and submersed nozzle covers by described retaining ring completely, thus forms opposing seal space in the cooperation place of described tundish upper nozzle and described submersed nozzle; When the upper end of described retaining ring is positioned at described tight lock part the first half, the cooperation place of described tundish upper nozzle and described submersed nozzle is exposed completely, so that described submersed nozzle of seting out.
2. device according to claim 1, is characterized in that, the free edge of described box-like body portion sidewall is fixed on outside described tundish by flange and wraps at the end.
3. device according to claim 2, is characterized in that, wraps at the be end provided with one deck asbestos fibre pad outside described flange and described tundish.
4. device according to claim 1, is characterized in that, the sidewall in described box-like body portion is provided with argon blowing hole.
5. device according to claim 4, is characterized in that, described argon blowing hole is symmetricly set on the sidewall in described box-like body portion.
6. the device according to claim 4 or 5, is characterized in that, described argon blowing hole is two.
7. device according to claim 1, is characterized in that, described tight lock part is connected cooperation with described retaining ring by the mode be spirally connected.
8. device according to claim 7, is characterized in that, the fit clearance between described tight lock part and described retaining ring is not less than 1mm.
9. device according to claim 1, it is characterized in that, described tight lock part is connected cooperation with described retaining ring by the mode of upper and lower push-and-pull, wherein, described tight lock part and described retaining ring are the pyramidal structure with hollow cavity, described retaining ring is set in described tight lock part outer surface, and described retaining ring is slidably on described tight lock part, and described retaining ring upper internal diameter size is less than described tight lock part end opening outside dimension.
10. device according to claim 1, is characterized in that, described tight lock part length is 60-80mm, and described retaining ring length is 50-70mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420432902.8U CN204035550U (en) | 2014-08-01 | 2014-08-01 | The device that continuous casting intermediate inlet is protected with sealed argon-blowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420432902.8U CN204035550U (en) | 2014-08-01 | 2014-08-01 | The device that continuous casting intermediate inlet is protected with sealed argon-blowing |
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| Publication Number | Publication Date |
|---|---|
| CN204035550U true CN204035550U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420432902.8U Expired - Fee Related CN204035550U (en) | 2014-08-01 | 2014-08-01 | The device that continuous casting intermediate inlet is protected with sealed argon-blowing |
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| CN (1) | CN204035550U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117667A (en) * | 2014-08-01 | 2014-10-29 | 莱芜钢铁集团有限公司 | Sealing argon blowing protection device and method for nozzles of tundish for continuous casting |
| 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 |
| CN112024866A (en) * | 2020-09-04 | 2020-12-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Full-sealed die casting pouring protection device |
-
2014
- 2014-08-01 CN CN201420432902.8U patent/CN204035550U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117667A (en) * | 2014-08-01 | 2014-10-29 | 莱芜钢铁集团有限公司 | Sealing argon blowing protection device and method for nozzles of tundish for continuous casting |
| CN104117667B (en) * | 2014-08-01 | 2016-01-20 | 莱芜钢铁集团有限公司 | The device and method that continuous casting intermediate inlet is protected with sealed argon-blowing |
| 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 |
| CN112024866A (en) * | 2020-09-04 | 2020-12-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Full-sealed die casting pouring protection device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20160801 |
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| CF01 | Termination of patent right due to non-payment of annual fee |