CN207057615U - A kind of continuous casting current stabilization mouth of a river - Google Patents
A kind of continuous casting current stabilization mouth of a river Download PDFInfo
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- CN207057615U CN207057615U CN201721036598.5U CN201721036598U CN207057615U CN 207057615 U CN207057615 U CN 207057615U CN 201721036598 U CN201721036598 U CN 201721036598U CN 207057615 U CN207057615 U CN 207057615U
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Abstract
A kind of continuous casting current stabilization mouth of a river, including the slag line section on mouth of a river body, the intrinsic center vertical runner in the mouth of a river, mouth of a river body, it is arranged at mouth of a river body tip liquid outlet, the vertical runner inner wall of mouth of a river body is embedded with least one concentric ceramic material ring, and ceramic material ring internal diameter and vertical runner internal diameter are basically identical.Simple in construction, low manufacture cost, effectively reduce molten steel runner inner wall is washed away, being intended for single use the life-span can be brought up to more than 12 hours by 7 ~ 8 hours.
Description
Technical field
It the utility model is related to steel-making continuous casting industrial water mouth field, more particularly to long nozzle, submersed nozzle.
Background technology
The long nozzle, the submersed nozzle that use in steel-making continuous casting production, belong to the often replacing of consumable accessory needs, it is usual because
Mouth of a river inwall is washed away by molten steel, and erosion is washed away to a certain extent in outside slag line part by molten steel, can not be continuing with, it is necessary to change
The whole mouth of a river, with avoid quality problems, production accident generation.
Need to be positioned to accurate with each accessory up and down when changing the mouth of a river, and speed is fast, otherwise will influence product quality,
The mouth of a river is so frequently changed, forms obstacle to improving yield, improving product quality, therefore, this area is generally with outside the overstriking mouth of a river
The method in footpath, service life is improved, but this method has wretched insufficiency：1. to change the associated components chi coordinated with it
It is very little；2. overstriking external diameter mouth of a river weight increases, production cost is substantially increased；3. increase execute-in-place difficulty, meanwhile, still it is difficult reduce because
Mouth of a river internal damage causes the frequency for changing the mouth of a river.
In the prior art, long nozzle for continuous casting, the submersed nozzle mouth of a river, including mouth of a river main body, slag line, described mouth of a river master
The vertical direction up and down of body has molten steel passage, and bottom is provided with what is be connected with molten steel passage, and it works as molten steel from molten steel passage
When flowing downwardly into lower section, the flow velocity of molten steel, intensity, shape, mouth of a river insertion depth etc. are gone to the floating of molten steel flow and field trash
Except having a major impact.
Because of the change of the flow control slide plate above the mouth of a river or flow control stopper open degree, cause molten steel when toward flowing underneath, steel
Stream is not vertically to rush in the center at the mouth of a river（Fig. 1）, certain angle flow direction is formed to mouth of a river inwall（Fig. 3）, impact water
Intraoral wall, inclined punching of the steel stream to the mouth of a river is often formed, even result in the expanding irregular even perforation in the mouth of a river（Fig. 4）If steel stream rushes
Hit and a little overlapped with outer wall slag line corrosion pitting, then mouth of a river service life greatly shortens, or even causes production accident.
China Patent Publication No. CN112909A discloses a kind of refractory for continuous casting and its submersed nozzle, and it is in water
Intraoral wall is provided with special refractories composite bed, effectively prevents that aluminium blocks in molten steel, increases the service life, but its composite bed institute
It is larger with the material porosity, to the not special effect of sherardizing steel, hole problem is punched through partially and is still existed.
China Patent Publication No. CN2339332Y discloses compound nozzle for continuous casting, and it uses different materials by top and the bottom
Matter improves service life, is the change to mouth of a river material realizing its corrosion-resistant and erosion, does not make from structure
Molten steel reduces impulsive force when flowing downward, so as to increase the service life.
Above-mentioned patent is the improvement to mouth of a river material itself, but more often cost is more expensive for the material of impact resistance and corrosion,
It can not be applicable, have much room for improvement in real production process.
Have in the prior art by being provided with projection and bulge loop in runner, by its realization to the flow-disturbing of molten steel, prevent
Large force is washed away, but easily causes blocking, causes service life and efficiency lower.
Utility model content
The utility model is directed to above-mentioned deficiency, there is provided a kind of simple in construction, low manufacture cost, that the life-span is intended for single use is reachable
More than 12 hours, effectively reduce molten steel to continuous casting current stabilization mouth of a river washed away of runner inner wall and preparation method thereof.
To realize the utility model purpose, there is provided following technical scheme：A kind of continuous casting current stabilization mouth of a river, including mouth of a river sheet
Body, the intrinsic center vertical runner in the mouth of a river, the slag line section on the body of the mouth of a river, mouth of a river body tip liquid outlet is arranged at, it is special
Sign is that the vertical runner inner wall of mouth of a river body is embedded with least one concentric ceramic material ring.
Preferably, ceramic material ring internal diameter is less than or equal to 2 ~ 3mm of vertical runner internal diameter.
Preferably, ceramic material ring internal diameter is more than or equal to vertical runner internal diameter.
Preferably, liquid outlet is arranged to one coaxially penetrated with center vertical runner or is set on being located at mouth of a river sheet
The nearly bottom side wall of body penetrates multiple with center vertical runner.
Preferably, ceramic material ring is arranged at the nearly bottom of mouth of a river body and above liquid outlet.Most preferably, ceramic material
Material ring is located at below slag line section.
Preferably, thickness thickness degree≤3mm of ceramic material ring or not less than position mouth of a river body wall thickness 10%.
To realize the utility model purpose, there is provided a kind of preparation method at the continuous casting current stabilization mouth of a river, it is characterised in that including with
Lower step：
Ceramic material ring set is connected on die mandrel first；Then die mandrel is inserted in mould, in mould
Mouth of a river body pug is dosed, high-pressure molding base substrate, sintering furnace is finally putting into and carries out baking thermal sintering.
Preferably, the heat-conducting system of the heat-conducting system and expansion system of ceramic material ring and its position nozzle material
It is consistent or close with expansion system.
The utility model beneficial effect：The utility model first, increasing by the ceramic embedded rings of material of runner inner wall, making pottery
Restrictor ring is played a part of in corrosion-resistant and scour resistance at ceramic material ring, the presence that key focuses on ceramic material ring, former
Because in casting process due to flow control factor or ladle bag deformation etc. cause steel stream to be unable to normal upright down, in continuous casting
Initial stage forms the intense impact of certain angle to mouth of a river inwall, causes original nozzle material to be partially damaged, or in irregular expansion
Aperture, but when steel stream reaches ceramic material part, because steel stream washes away extremely small formation restrictor ring to ceramic material, steel stream by
The limitation of ceramic material ring, makes molten steel integrally fill in inlet flow channel, effectively reduces impact of the molten steel to mouth of a river inwall, and can
By controlling the position Lai Shi mouths of a river internal impact point of ceramic material ring to avoid outside slag line corrosion pitting, substantially prolongs the mouth of a river makes
With the life-span, production accident is reduced, improves product quality production yields.
Brief description of the drawings
Fig. 1 is mouth of a river bottom liquid outlet ideally flow regime of the molten steel in the mouth of a river.
Fig. 2 is the lateral liquid outlet in the mouth of a river ideally flow regime of the molten steel in the mouth of a river.
Fig. 3 is Fig. 1 steel liquid flow state figures in actual use.
Fig. 4 is Fig. 2 steel liquid flow state figures in actual use.
Fig. 5 washes away erosion state figure in the mouth of a river when Fig. 3 is in actual use.
Fig. 6 is that Fig. 4 washes away erosion state figure in the mouth of a river in actual use.
Fig. 7 is the schematic diagram of embodiment 1.
Fig. 8 is the schematic diagram of embodiment 2.
Fig. 9 is the schematic diagram of embodiment 3.
Figure 10 is a kind of structural representation of embodiment 4.
Figure 11 is another structural representation of embodiment 4.
Figure 12 is the structural representation of embodiment 5.
Embodiment
Embodiment 1：Ceramic ring position mouth of a river material ZrO2-C；Ceramic ring material ZrO2 ceramics, a kind of continuous casting current stabilization
The slag line section 3 on center vertical runner 2, mouth of a river body 1 in the mouth of a river, including mouth of a river body 1, mouth of a river body 1, it is arranged at the mouth of a river
End liquid outlet 4, liquid outlet 4 are arranged to one coaxially penetrated with center vertical runner 2, and the inwall of vertical runner 2 at the mouth of a river is embedding
Provided with a concentric ceramic material ring 5, the internal diameter of ceramic material ring 5 is consistent with the vertical internal diameter of runner 2, and ceramic material ring 5 is set
In the nearly bottom in the mouth of a river and it is located at liquid outlet 4, the thickness 4mm of ceramic material ring 5, height 30mm, it is small that mouth of a river actual use reaches 11
When 40 minutes.Without set ceramic ring the mouth of a river only used 7 hours 25 points.
Embodiment 2：With reference to embodiment 1, liquid outlet 4 is set on being located at the nearly bottom side wall of mouth of a river body 1 and center vertical
2 of the insertion of runner 2.The mouth of a river actually use 11 hours 33 points, without set ceramic ring the mouth of a river only used 7 hours 40 points.
Embodiment 3：Center vertical runner 2, water in a kind of continuous casting current stabilization mouth of a river, including mouth of a river body 1, mouth of a river body 1
Slag line section 3 on mouthful body 1, the end liquid outlet 4 of mouth of a river body 1 is arranged at, liquid outlet 4 is arranged to same with center vertical runner 2
One of axle insertion, the inwall of vertical runner 2 of mouth of a river body 1 is embedded with a concentric ceramic material ring 5, ceramic material ring 5
Internal diameter is consistent with the vertical internal diameter of runner 2, and the height of ceramic material ring 5 flushes from the end liquid outlet 4 of mouth of a river body 1 and extends to slag
The top of line segment 3.
The mouth of a river actually use 11 hours 42 points, without set ceramic ring the mouth of a river only used 7 hours 38 points.
Embodiment 4：With reference to embodiment 1 or 2, ceramic material ring 5 is 3 upper, middle and lowers three for being positioned over the inwall of mouth of a river body 1
Individual region.
The mouth of a river actually use 12 hours 12 points, without set ceramic ring the mouth of a river only used 7 hours 33 points.
Embodiment 5：With reference to embodiment 1, ceramic material ring 5 covers the whole vertical inwall of runner 2.
Embodiment 6：A kind of preparation method at the continuous casting current stabilization mouth of a river, it is characterised in that comprise the following steps：
Ceramic material ring set is connected on die mandrel first；Then die mandrel is inserted in mould, in mould
Mouth of a river pug is dosed, high-pressure molding base substrate, sintering furnace is finally putting into and carries out baking thermal sintering.
Mouth of a river body 1 and the split of ceramic material ring 5 can be molded when being made to embodiment 5, then overall package
Together.
The heat-conducting system and expansion system of ceramic material ring and the heat-conducting system and expansion system of mouth of a river body refractory material
It is consistent or close.
1. refractory material is zirconium oxide-carbon material, ceramic material ring is zirconia ceramics；
2. refractory material is aluminum oxide-carbon material, ceramic material ring is aluminium oxide ceramics；
Known in this professional domain, refractory material can be zirconium oxide-carbonaceous, magnesia-carbonaceous, spinelle-carbonaceous, oxidation
The materials such as aluminium-carbonaceous, the material of ceramic material ring can be that zirconium oxide, magnesia, spinelle are added in ceramic raw material
One kind or multiple combination in the materials such as matter, aluminum oxide, silicon nitride, boron nitride, carborundum, boron carbide.
Known in this professional domain, as Figure 12 belongs to same category.
Or manufacture single part respectively, be combined with each other with chamotte, then toast as an entirety, final overall package and
Into.
The internal diameter of ceramic material ring is slightly below or slightly larger than vertical flow diameter and technical side of the present utility model can be achieved
Case, but the internal diameter of ceramic material ring at most can only be less than vertical flow diameter 3mm.Otherwise influential effect is larger.
Claims (7)
- A kind of 1. slag line on continuous casting current stabilization mouth of a river, including mouth of a river body, the intrinsic center vertical runner in the mouth of a river, mouth of a river body Section, it is arranged at mouth of a river body tip liquid outlet, it is characterised in that the vertical runner inner wall of mouth of a river body is embedded with least one same The ceramic material ring of the heart.
- 2. a kind of continuous casting current stabilization mouth of a river according to claim 1, it is characterised in that ceramic material ring internal diameter is less than or equal to perpendicular 2 ~ 3mm of straight channel internal diameter.
- 3. a kind of continuous casting current stabilization mouth of a river according to claim 1, it is characterised in that ceramic material ring internal diameter is more than or equal to perpendicular Straight channel internal diameter.
- 4. a kind of continuous casting current stabilization mouth of a river according to claim 1, it is characterised in that liquid outlet is arranged to and center vertical stream Coaxially penetrate one of road or be set on penetrates multiple located at the nearly bottom side wall of mouth of a river body with center vertical runner.
- 5. a kind of continuous casting current stabilization mouth of a river according to claim 1, it is characterised in that ceramic material ring is arranged at mouth of a river body Nearly bottom and above liquid outlet.
- A kind of 6. continuous casting current stabilization mouth of a river according to claim 5, it is characterised in that ceramic material ring at least one be located at Below slag line section.
- A kind of 7. continuous casting current stabilization mouth of a river according to claim 1, it is characterised in that Hou Du≤3mm of ceramic material ring or not Less than the 10% of position thickness of SEN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721036598.5U CN207057615U (en) | 2017-08-18 | 2017-08-18 | A kind of continuous casting current stabilization mouth of a river |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721036598.5U CN207057615U (en) | 2017-08-18 | 2017-08-18 | A kind of continuous casting current stabilization mouth of a river |
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| Publication Number | Publication Date |
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| CN207057615U true CN207057615U (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721036598.5U Active CN207057615U (en) | 2017-08-18 | 2017-08-18 | A kind of continuous casting current stabilization mouth of a river |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396410A (en) * | 2017-08-18 | 2019-03-01 | 江苏奥能耐火材料有限公司 | A kind of continuous casting current stabilization mouth of a river and preparation method thereof |
| CN115673306A (en) * | 2022-11-14 | 2023-02-03 | 青岛正望新材料股份有限公司 | Plug rod for producing high-phosphorus amorphous alloy and manufacturing method thereof |
-
2017
- 2017-08-18 CN CN201721036598.5U patent/CN207057615U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396410A (en) * | 2017-08-18 | 2019-03-01 | 江苏奥能耐火材料有限公司 | A kind of continuous casting current stabilization mouth of a river and preparation method thereof |
| CN115673306A (en) * | 2022-11-14 | 2023-02-03 | 青岛正望新材料股份有限公司 | Plug rod for producing high-phosphorus amorphous alloy and manufacturing method thereof |
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