CN209094541U - A kind of anti-wadding stream submersed nozzle - Google Patents
A kind of anti-wadding stream submersed nozzle Download PDFInfo
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- CN209094541U CN209094541U CN201821351117.4U CN201821351117U CN209094541U CN 209094541 U CN209094541 U CN 209094541U CN 201821351117 U CN201821351117 U CN 201821351117U CN 209094541 U CN209094541 U CN 209094541U
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- ontology
- slag line
- inner cavity
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Abstract
The utility model discloses a kind of anti-waddings to flow submersed nozzle, including bowl portion；Bowl portion and bulk transition layer；Ontology and slag line transition zone；Slag line and side opening, bowl subordinate portion is provided with bowl portion and bulk transition layer, the bowl portion and bulk transition layer lower part are provided with ontology, inner cavity is provided among the ontology, the lumen outer is surrounded by magnesium aluminate spinel matter liner layer, the magnesium aluminate spinel matter liner layer outer layer is surrounded by high-densit vitreous silica layer, the body lower part is provided with ontology and slag line transition zone, the ontology and slag line transition zone lower part are provided with slag line, side opening is provided on the downside of the slag line, the inner cavity is from the downside of bowl portion and bulk transition layer one through on the upside of side opening, the magnesium aluminate spinel matter liner layer and high-densit vitreous silica layer are identical as the height of inner cavity, the anti-wadding stream submersed nozzle can effectively prevent the problem of submersed nozzle inner cavity aperture becomes smaller in steel pouring process, making to pour rigid rhythm will not be affected, reduce the defect of slab quality.
Description
Technical field
The utility model relates to continuous casting functional technical field of refractory materials, specially a kind of anti-wadding flows submersed nozzle.
Background technique
Submersed nozzle continuous casting workshop section using when primarily serve the effect of water conservancy diversion, molten steel is drained into knot from tundish
In brilliant device, but three oxidations two when casting the easily wadding stream steel grade such as Aluminum steel, aluminum killed steel, mild steel, ultra-low-carbon steel and Ti-containing steel
Aluminium easily adheres on the internal chamber wall of the mouth of a river, and mouth of a river inner cavity aperture is caused to become smaller, and generally requires constant temperature permanent in normal steel pouring process
Pulling rate casting will cause the reduction of mouth of a river inner cavity steel -passing amount, in turn if submersed nozzle inner cavity aperture becomes smaller in steel pouring process
Cause pulling rate to reduce, and easily cause liquid level fluctuation of crystallizer, not only affects and normally pour steel rhythm and also add slab matter
Measure defect.
The measure for solving submersed nozzle wadding stream at present is mainly to add aluminum amount in the control converter of converter workshop section, remove in satisfaction
On the basis of oxygen demand, avoid aluminum amount remaining；It refines workshop section and increases refining time, improve liquid steel temperature, using soft blow argon, refining
Complete to be appropriately extended that ladle is quiet puts the time, it is ensured that the aluminum oxide in molten steel sufficiently floats；In refining workshop section's increase appropriate
Calcium line, silicon-calcium wire line feeding amount, make AL2O3The 12CaO.7AL to form low melting point is reacted with CaO2O3, improve the mobility of molten steel, no
Crossing the CaO in molten steel can also react with the AL2O3 in caput, water gap bowl portion material, form the 12CaO.7AL2O3 of low melting point, make
The case where washing away at the not anti-molten steel of caput and water gap bowl portion, cause not flow control；Baking of tundish temperature is improved in continuous casting workshop section,
It opens to pour to go to and is blown into argon gas inside tundish, exclude the air inside tundish sufficiently, avoid in the aluminium and air in molten steel
Oxygen contact, formed aluminum oxide；It is cast pouring steel whole process using whole process protection, molten steel is avoided to contact with air,
Argon gas-sealed is used between long nozzle and collector nozzle of ladle, submersed nozzle and middle water-coating port；It is used in middle water-coating port or caput
Argon technology, avoids aluminum oxide from adhering to inside the mouth of a river；Guarantee that liquid steel temperature is stablized in steel pouring process simultaneously, if molten steel
Temperature reduces, and using heating plasma mode, improves liquid steel temperature；One is wrapped up in submersed nozzle outer surface in steel pouring process
The thicker refractory fiber cotton of layer avoids causing when molten steel passes through submersed nozzle during pouring steel because liquid steel temperature scatters and disappears
Aluminum oxide upper attachment inside the mouth of a river, above method to a certain extent, also effectively slow down mouth of a river wadding stream, extend
Mouth of a river service life, but steel mill's production cost is both increased, all certain limit of anti-wadding stream effect, not from submersed nozzle
Mouth of a river inner cavity wadding flow problem itself is solved up.
So how to design a kind of anti-wadding stream submersed nozzle, becoming us will currently be solved the problems, such as.
Utility model content
The purpose of this utility model is to provide a kind of anti-waddings to flow submersed nozzle, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the utility model provides the following technical solutions: bowl subordinate portion is provided with bowl portion and this
Body transition zone, the bowl portion and bulk transition layer lower part are provided with ontology, are provided with inner cavity among the ontology, outside the inner cavity
Portion is surrounded by magnesium aluminate spinel matter liner layer, and the magnesium aluminate spinel matter liner layer outer layer is surrounded by high-densit vitreous silica layer, described
Body lower part is provided with ontology and slag line transition zone, and the ontology and slag line transition zone lower part are provided with slag line, under the slag line
Side is provided with side opening, and the inner cavity is from the downside of bowl portion and bulk transition layer one through on the upside of side opening, the magnesium aluminate spinel matter
Liner layer and high-densit vitreous silica layer are identical as the height of inner cavity.
Further, the high-densit vitreous silica layer thickness requirement 2-5mm.
Further, the magnesium aluminate spinel matter liner layer and high-densit vitreous silica layer using separately formed technology or add
Sleeve integral shaping method.
Further, the magnesium aluminate spinel matter liner layer thickness requirement 2-7mm.
Further, the magnesium aluminate spinel matter liner layer and high-densit vitreous silica layer are separately formed using isostatic cool pressing
Technology, briquetting pressure 20MPa-60Mpa
Compared with prior art, the utility model has the beneficial effects that the anti-wadding stream submersed nozzle can effectively be prevented
The problem of only submersed nozzle inner cavity aperture becomes smaller in steel pouring process, making to pour rigid rhythm will not be affected, from submersed nozzle
Wadding flow problem is solved with this, it is ensured that flow phenomenon of wadding a quilt with cotton does not occur in casting easily wadding stream steel grade, it is ensured that company, which pours, to be normally carried out, and is reduced
Casting blank defect improves slab quality.
Detailed description of the invention
Fig. 1 is that the anti-wadding stream submersed nozzle of one kind of the present invention develops structural schematic diagram；
Fig. 2 is conventional submersion gate structure schematic diagram；
In figure: 1- bowl portion；2- bowl portion and bulk transition layer；3- magnesium aluminate spinel matter liner layer；4- ontology；5- is high-densit
Vitreous silica layer；The inner cavity 6-；7- ontology and slag line transition zone；8- slag line；9- side opening.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the utility model, it should be noted that term " center ", "lower", "left", "right", " is erected at "upper"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of anti-wadding stream submersed nozzle, including bowl portion
1；Bowl portion and bulk transition layer 2；Magnesium aluminate spinel matter liner layer 3；Ontology 4；High-densit vitreous silica layer 5；Inner cavity 6；Ontology with
Slag line transition zone 7；Slag line 8 and side opening 9,1 lower part of bowl portion are provided with bowl portion and bulk transition layer 2, the bowl portion and ontology
2 lower part of transition zone is provided with ontology 4, and inner cavity 6 is provided among the ontology 4, is surrounded by magnesium aluminate spinel matter outside the inner cavity 6
Liner layer 3,3 outer layer of magnesium aluminate spinel matter liner layer are surrounded by high-densit vitreous silica layer 5, and 4 lower part of ontology is provided with
Ontology and slag line transition zone 7, the ontology and 7 lower part of slag line transition zone are provided with slag line 8, are provided with side on the downside of the slag line 8
Hole 9, the inner cavity 6 is from bowl portion and the downside of bulk transition layer 2 one through to 9 upside of side opening, the magnesium aluminate spinel matter liner layer 3
Identical as the height of inner cavity 6 with high-densit vitreous silica layer 5, the high-densit vitreous silica layer 5 thickness requirement 2-5mm is described
Magnesium aluminate spinel matter liner layer 3 and high-densit vitreous silica layer 5 use separately formed technology or jacketed cylinder integral shaping method, institute
State 3 thickness requirement 2-7mm of magnesium aluminate spinel matter liner layer, the magnesium aluminate spinel matter liner layer 3 and high-densit vitreous silica layer 5
Using the separately formed technology of isostatic cool pressing, briquetting pressure 20MPa-60Mpa.
Working principle: in conjunction with the development of the anti-wadding stream submersed nozzle of Fig. 1 one kind provided by the utility model, submersed nozzle
The compound one layer of magnesium aluminate spinel matter liner layer 3 of most inner side, compound one layer high-densit vitreous silica layer 5, magnalium point are brilliant again for middle
After 3 material of stone matter liner layer and dense sintering quartz material can be formed by separately formed mode, then it is set on die for blank, with
Blank forms together, can also be by way of jacketed cylinder by magnesium aluminate spinel material and high-densit sintered molten quartz material and this
Body 4,8 material of slag line are mounted in mold together while forming.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of anti-wadding flows submersed nozzle, including bowl portion (1)；Bowl portion and bulk transition layer (2)；Magnesium aluminate spinel matter liner layer
(3)；Ontology (4)；High-densit vitreous silica layer (5)；Inner cavity (6)；Ontology and slag line transition zone (7)；Slag line (8) and side opening (9),
It is characterized by: bowl portion (1) lower part is provided with bowl portion and bulk transition layer (2), under the bowl portion and bulk transition layer (2)
Portion is provided with ontology (4), is provided with inner cavity (6) among the ontology (4), is surrounded by magnesium aluminate spinel matter outside the inner cavity (6)
Liner layer (3), magnesium aluminate spinel matter liner layer (3) outer layer are surrounded by high-densit vitreous silica layer (5), under the ontology (4)
Portion is provided with ontology and slag line transition zone (7), and the ontology and slag line transition zone (7) lower part are provided with slag line (8), the slag line
(8) downside is provided with side opening (9), the inner cavity (6) from the downside of bowl portion and bulk transition layer (2) one through on the upside of side opening (9),
The magnesium aluminate spinel matter liner layer (3) and high-densit vitreous silica layer (5) are identical as the height of inner cavity (6).
2. the anti-wadding of one kind according to claim 1 flows submersed nozzle, it is characterised in that: the high-densit vitreous silica layer
(5) thickness requirement 2-5mm.
3. the anti-wadding of one kind according to claim 1 flows submersed nozzle, it is characterised in that: the magnesium aluminate spinel matter liner
Layer (3) and high-densit vitreous silica layer (5) use separately formed technology or jacketed cylinder integral shaping method.
4. the anti-wadding of one kind according to claim 1 flows submersed nozzle, it is characterised in that: the magnesium aluminate spinel matter liner
Layer (3) thickness requirement 2-7mm.
5. the anti-wadding of one kind according to claim 1 flows submersed nozzle, it is characterised in that: the magnesium aluminate spinel matter liner
Layer (3) and high-densit vitreous silica layer (5) use the separately formed technology of isostatic cool pressing, briquetting pressure 20MPa-60Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351117.4U CN209094541U (en) | 2018-08-21 | 2018-08-21 | A kind of anti-wadding stream submersed nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351117.4U CN209094541U (en) | 2018-08-21 | 2018-08-21 | A kind of anti-wadding stream submersed nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209094541U true CN209094541U (en) | 2019-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821351117.4U Active CN209094541U (en) | 2018-08-21 | 2018-08-21 | A kind of anti-wadding stream submersed nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209094541U (en) |
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2018
- 2018-08-21 CN CN201821351117.4U patent/CN209094541U/en active Active
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