CN109396410A - A kind of continuous casting current stabilization mouth of a river and preparation method thereof - Google Patents
A kind of continuous casting current stabilization mouth of a river and preparation method thereof Download PDFInfo
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- CN109396410A CN109396410A CN201710710794.4A CN201710710794A CN109396410A CN 109396410 A CN109396410 A CN 109396410A CN 201710710794 A CN201710710794 A CN 201710710794A CN 109396410 A CN109396410 A CN 109396410A
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- Prior art keywords
- mouth
- river
- continuous casting
- ceramic material
- current stabilization
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 25
- 230000006641 stabilisation Effects 0.000 title claims abstract description 18
- 238000011105 stabilization Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 15
- 238000005245 sintering Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 28
- 239000010959 steel Substances 0.000 abstract description 28
- 239000000919 ceramic Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000011819 refractory material Substances 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- WDEOTCWPXLWTRP-UHFFFAOYSA-N [C+4].[O-2].[Al+3] Chemical compound [C+4].[O-2].[Al+3] WDEOTCWPXLWTRP-UHFFFAOYSA-N 0.000 description 1
- WADXXUUJEXGHJE-UHFFFAOYSA-N [O-2].[Zr+4].[C+4].[O-2].[O-2].[O-2] Chemical compound [O-2].[Zr+4].[C+4].[O-2].[O-2].[O-2] WADXXUUJEXGHJE-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005479 sherardizing Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/52—Manufacturing or repairing thereof
- B22D41/54—Manufacturing or repairing thereof characterised by the materials used therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/505—Rings, inserts or other means preventing external nozzle erosion by the slag
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
A kind of continuous casting current stabilization mouth of a river and preparation method thereof, including on mouth of a river ontology, the intrinsic center vertical runner in the mouth of a river, mouth of a river ontology slag line section, be set to mouth of a river body tip liquid outlet, the vertical runner inner wall of mouth of a river ontology is embedded at least one concentric ceramic material ring, and ceramic material ring internal diameter and vertical runner internal diameter are almost the same.Structure is simple, low manufacture cost, molten steel is effectively reduced washes away to runner inner wall, is intended for single use the service life and can be increased to 12 hours or more by 7 ~ 8 hours.
Description
Technical field
The present invention relates to steel-making continuous casting industrial water mouth field more particularly to long nozzles, submersed nozzle.
Background technique
Steel-making continuous casting production used in long nozzle, submersed nozzle, belong to vulnerable part and need to be replaced frequently, it is usual because
Mouth of a river inner wall is washed away by molten steel, and erosion is washed away to a certain extent by molten steel in external slag line part, can not be continued to use, it is necessary to replace
The entire mouth of a river, to avoid quality problems, the generation of production accident.
It needs to be positioned to accurate with each accessory up and down when replacing the mouth of a river, and speed is fast, otherwise will affect product quality,
The mouth of a river is frequently replaced in this way, forms obstacle to improving yield, improving product quality, therefore, this field is usually used outside the overstriking mouth of a river
The method of diameter, improves service life, but there are wretched insufficiencies for this method: 1. will change associated components ruler engaged therewith
It is very little；2. overstriking outer 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 leads to the frequency for replacing 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, the mouth of a river master
The vertical direction up and down of body has molten steel channel, and lower part, which is provided with, to be connected with molten steel channel, when molten steel is from molten steel channel
When flowing downwardly into lower section, flow velocity, intensity, shape, mouth of a river insertion depth of molten steel etc. go the floating of molten steel flow and field trash
Except having a major impact.
Because of the variation of flow control slide plate or flow control stopper open degree above the mouth of a river, cause molten steel when toward flowing underneath, steel
Stream is not vertically to rush in the center (Fig. 1) at the mouth of a river, forms certain angle flow direction (Fig. 3) to mouth of a river inner wall, impacts water
Mouth inner wall often forms inclined punching of the steel stream to the mouth of a river, the expanding irregular even perforation (Fig. 4) in the mouth of a river is even resulted in, if the punching of steel stream
It hits and is 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, in water
Mouth inner wall is provided with special refractories composite layer, effectively prevent aluminium in molten steel to block, prolongs the service life, but its composite layer institute
Larger with the material porosity, to sherardizing steel, there is no special effects, punch through hole problem partially and still exist.
China Patent Publication No. CN2339332Y discloses compound nozzle for continuous casting, uses different materials by top and the bottom
Matter improves service life, and is the change to mouth of a river material to realize its corrosion-resistant and erosion, and do not make from structure
Molten steel reduces impact force when flowing downward, to prolong the service life.
Above-mentioned patent is the improvement to mouth of a river material itself, but often cost is more expensive for the material of more impact resistance and corrosion,
It can not be applicable in, have much room for improvement in real production process.
Have in the prior art by being provided with convex block and bulge loop in runner, by its realization to the flow-disturbing of molten steel, prevents
Large force is washed away, but be easy to cause blocking, causes service life and efficiency lower.
Summary of the invention
Simple, low manufacture cost that in view of the above problems, the present invention provides a kind of structures, single use service life are small up to 12
When more than, molten steel is effectively reduced to continuous casting current stabilization mouth of a river of runner inner wall washed away and preparation method thereof.
Purpose to realize the present invention provides following technical scheme: a kind of continuous casting current stabilization mouth of a river, including mouth of a river ontology, water
Mouth intrinsic center vertical runner, is set to mouth of a river body tip liquid outlet at the slag line section on the ontology of the mouth of a river, it is characterised in that
The vertical runner inner wall of mouth of a river ontology is embedded at 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 set as coaxially penetrate through with center vertical runner one or is set on set on mouth of a river sheet
The nearly bottom end side wall of body penetrates through multiple with center vertical runner.
Preferably, ceramic material ring is set to the nearly bottom end of mouth of a river ontology and is located 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 the 10% of position mouth of a river ontology wall thickness.
Purpose to realize the present invention provides a kind of production method at continuous casting current stabilization mouth of a river, it is characterised in that including following step
It is rapid:
Ceramic material ring set is connected on die mandrel first；Then die mandrel is inserted in mold, is dosed in mold
Mouth of a river ontology pug, high-pressure molding green body are finally putting into sintering furnace and carry 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 and swollen
Swollen systems compliant is close.
The invention has the advantages that: the present invention by the ceramic embedded rings of material of runner inner wall, first is that increasing ceramic material ring
Restrictor ring is played the role of in the corrosion-resistant and scour resistance at place, the presence that key focuses on ceramic material ring, and reason is
Steel stream is caused to be unable to normal upright down due to wrapping deformation etc. in flow control factor or ladle in continuous casting process, at continuous casting initial stage to water
Mouth inner wall forms the intense impact of certain angle, causes original nozzle material to be partially damaged, or irregularly expand internal orifice dimension, still
When steel stream reaches ceramic material part, because steel stream washes away extremely small formation restrictor ring to ceramic material, steel stream is by ceramic material
The limitation of ring, fills molten steel integrally in inlet flow channel, impact of the molten steel to mouth of a river inner wall is effectively reduced, and can pass through control
The position mouth of a river the Lai Shi internal impact point of ceramic material ring avoids external slag line corrosion pitting, substantially prolongs mouth of a river service life,
Production accident is reduced, product quality production yields is improved.
Detailed description of the invention
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 figure in actual use.
Fig. 4 is Fig. 2 steel liquid flow state figure in actual use.
In Fig. 3, erosion state figure is washed away at the mouth of a river to Fig. 5 in actual use.
Fig. 6 is that erosion state figure is washed away at the mouth of a river to Fig. 4 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 schematic diagram of embodiment 4.
Figure 11 is another structural schematic diagram of embodiment 4.
Figure 12 is the structural schematic diagram of embodiment 5.
Specific 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 mouth of a river including the center vertical runner 2 in mouth of a river ontology 1, mouth of a river ontology 1, the slag line section 3 on mouth of a river ontology 1, is set to the mouth of a river
End liquid outlet 4, liquid outlet 4 are set as coaxially penetrate through with center vertical runner 2 one, and 2 inner wall of vertical runner at the mouth of a river is embedding
Equipped with a concentric ceramic material ring 5,5 internal diameter of ceramic material ring is consistent with vertical 2 internal diameter of runner, and ceramic material ring 5 is arranged
In the nearly bottom end 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 be arranged ceramic ring the mouth of a river only used 7 hours 25 points.
Embodiment 2: referring to embodiment 1, liquid outlet 4 is set on set on the nearly bottom end side wall of mouth of a river ontology 1 and center vertical
2 of the perforation of runner 2.The mouth of a river actually use 11 hours 33 points, without be arranged ceramic ring the mouth of a river only used 7 hours 40 points of
Embodiment 3: a kind of continuous casting current stabilization mouth of a river, including the center vertical runner 2 in mouth of a river ontology 1, mouth of a river ontology 1, mouth of a river sheet
Slag line section 3 on body 1 is set to 1 end liquid outlet 4 of mouth of a river ontology, and liquid outlet 4 is set as coaxially passing through with center vertical runner 2
Logical one, 2 inner wall of vertical runner of mouth of a river ontology 1 are embedded with a concentric ceramic material ring 5,5 internal diameter of ceramic material ring
Consistent with vertical 2 internal diameter of runner, 5 height of ceramic material ring flushes from 1 end liquid outlet 4 of mouth of a river ontology and extends to slag line section
3 tops.
The mouth of a river actually use 11 hours 42 points, without be arranged ceramic ring the mouth of a river only used 7 hours 38 points of
Embodiment 4: referring to embodiment 1 or 2, ceramic material ring 5 is 3 three areas of upper, middle and lower for being placed in 1 inner wall of mouth of a river ontology
Domain.
The mouth of a river actually use 12 hours 12 points, without be arranged ceramic ring the mouth of a river only used 7 hours 33 points of
Embodiment 5: referring to embodiment 1, ceramic material ring 5 covers 2 inner wall of entire vertical runner.
A kind of embodiment 6: the production method at continuous casting current stabilization mouth of a river, it is characterised in that the following steps are included:
Ceramic material ring set is connected on die mandrel first；Then die mandrel is inserted in mold, is dosed in mold
Mouth of a river pug, high-pressure molding green body are finally putting into sintering furnace and carry out baking thermal sintering.
Mouth of a river ontology 1 and 5 fission of ceramic material ring can be formed 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 ontology 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 aluminium 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, aluminium oxide-
The materials such as carbonaceous, the material of ceramic material ring can for be added in ceramic raw material zirconium oxide, magnesia, spinel,
One of materials such as aluminum oxide, silicon nitride, boron nitride, silicon carbide, boron carbide or multiple combination.
Known in this professional domain, as Figure 12 belongs to same scope.
Or manufacture single part respectively, be combined with each other with chamotte, then toast as an entirety, final overall package and
At.
The internal diameter of ceramic material ring, which is slightly below or slightly larger than vertical flow diameter, can be achieved technical solution of the present invention, 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 (9)
1. a kind of continuous casting current stabilization mouth of a river, including the slag line on mouth of a river ontology, the intrinsic center vertical runner in the mouth of a river, mouth of a river ontology
Section is set to mouth of a river body tip liquid outlet, it is characterised in that it is same that the vertical runner inner wall of mouth of a river ontology is embedded at least one
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 set as and center vertical stream
Coaxially penetrate through one of road or be set on set on the nearly bottom end side wall of mouth of a river ontology penetrates through multiple 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 set to mouth of a river ontology
Nearly bottom end and it is located above liquid outlet.
6. a kind of 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.
7. a kind of 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
Lower than the 10% of position thickness of SEN.
8. a kind of production method at the continuous casting current stabilization mouth of a river as described in one of claim 1 ~ 7, it is characterised in that including following step
It is rapid:
Ceramic material ring set is connected on die mandrel first；Then die mandrel is inserted in mold, is dosed in mold
Mouth of a river ontology pug, high-pressure molding green body are finally putting into sintering furnace and carry out baking thermal sintering.
9. a kind of production method at continuous casting current stabilization mouth of a river according to claim 8, it is characterised in that ceramic material ring is led
Hot coefficient and the coefficient of expansion are consistent or close with the thermal coefficient of its position nozzle material and the coefficient of expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710794.4A CN109396410A (en) | 2017-08-18 | 2017-08-18 | A kind of continuous casting current stabilization mouth of a river and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710794.4A CN109396410A (en) | 2017-08-18 | 2017-08-18 | A kind of continuous casting current stabilization mouth of a river and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109396410A true CN109396410A (en) | 2019-03-01 |
Family
ID=65455205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710710794.4A Pending CN109396410A (en) | 2017-08-18 | 2017-08-18 | A kind of continuous casting current stabilization mouth of a river and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109396410A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170641A (en) * | 2019-06-04 | 2019-08-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of square billet hyperbolic-type submersed nozzle and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170641A (en) * | 2019-06-04 | 2019-08-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of square billet hyperbolic-type submersed nozzle and preparation method thereof |
| CN110170641B (en) * | 2019-06-04 | 2021-05-11 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Square billet hyperbolic submerged nozzle and manufacturing method thereof |
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