CN210450948U - Rotary centrifugal filtering tundish for clean steel continuous casting and rolling production - Google Patents
Rotary centrifugal filtering tundish for clean steel continuous casting and rolling production Download PDFInfo
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- CN210450948U CN210450948U CN201921110576.8U CN201921110576U CN210450948U CN 210450948 U CN210450948 U CN 210450948U CN 201921110576 U CN201921110576 U CN 201921110576U CN 210450948 U CN210450948 U CN 210450948U
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- molten steel
- steel barrel
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- tundish
- collecting groove
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 172
- 239000010959 steel Substances 0.000 title claims abstract description 172
- 238000005096 rolling process Methods 0.000 title claims abstract description 23
- 238000009749 continuous casting Methods 0.000 title claims abstract description 22
- 238000001914 filtration Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052786 argon Inorganic materials 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 39
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- 238000009825 accumulation Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000011819 refractory material Substances 0.000 claims description 4
- 238000009991 scouring Methods 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 230000003749 cleanliness Effects 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 241000294180 Osmunda japonica Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
A rotary centrifugal filtering tundish for the continuous casting and rolling of clean steel features that the inclusion content in molten steel can be obviously reduced and the cleanliness of steel can be improved. The device comprises a molten steel barrel, a molten steel barrel rotating support shaft, a molten steel barrel rotating bearing, a molten steel barrel rotating driving device, a filter, a high-pressure argon gas bag, a high-pressure air nozzle, an annular flow collecting groove support table and a heater; the bottom wall of the molten steel barrel is provided with a liquid outlet, and the molten steel barrel is in running fit with the molten steel barrel rotating support shaft through a molten steel barrel mounting platform and a rotating bearing; the molten steel barrel rotation driving device is provided with a driving motor and a transmission mechanism, the filter is arranged in a liquid outlet on the bottom wall of the molten steel barrel, the high-pressure argon bag is arranged outside the molten steel barrel, and the high-pressure argon bag sprays argon to the inner cavity of the molten steel barrel through a high-pressure air nozzle; the annular flow collecting groove is used for receiving molten steel flowing out of a liquid outlet of the molten steel barrel, the annular flow collecting groove is arranged on the supporting table of the annular flow collecting groove, and the heater is arranged on the outer side wall of the annular flow collecting groove and used for heating the annular flow collecting groove.
Description
Technical Field
The utility model belongs to the technical field of clean steel production continuous casting and rolling technology technique and specifically relates to a package in the middle of rotation type centrifugal filtration for clean steel continuous casting and rolling production is related to.
Background
With the development of science and technology, the requirements on the performance of steel are increasingly strict, the requirements on the quality of steel are continuously improved, and how to further reduce the content of impurities in steel and improve the cleanliness of steel is a development direction which is very important in the century.
Fracture mechanics vs. fracture toughness K1cThe research shows that when the inclusion is less than 5 mu m, the crack propagation rate of the steel is greatly reduced under the load condition[3]. In current industrial practice, some steels for high-end use have strict limits on the critical size of inclusions, such as the steel for shadow mask of kinescope, the maximum size of inclusions should not be more than 5 μm, the steel for bearing and bearing race, the maximum size of inclusions should not be more than 10 μm, the steel for ball bearing, the maximum size of inclusions should not be more than 15 μm[1]。
In the existing steel continuous casting and rolling production process, the final stage of molten steel purification is completed in a stationary and fixed tundish, and then the molten steel directly enters a steel rolling mill crystallizer through a submerged nozzle. The basic method for purifying molten steel in tundish is to add covering agent to the surface of molten steel in tundish to make fine inclusion float upwards and enter the covering agent, and to make inclusion float upwards smoothly, the structure of tundish is designed according to hydromechanics and heat transfer principle, for example, a dam or weir is arranged in the tundishAnd perforated plates or the like, which are made to have a reasonable turbulence to agglomerate the inclusion particles, and which have a suitable depth and wide cross-section to promote Stokes flotation of the inclusion particles[1]. In recent years, the argon blowing technology of the tundish is developed rapidly, and fine and dense argon bubbles are blown into molten steel to ensure that micro inclusions adhere to the surfaces of the bubbles and float upwards.
Although the above-mentioned technology can greatly reduce the inclusion in molten steel, its effect for removing the fine inclusion whose size is less than 200 micrometers and difficult to be gathered and floated is limited, and the size of the inclusion can be controlled within 50 micrometers[2]、[4]Therefore, it still cannot meet the requirements of some high-end steels.
In recent years, various ceramic filters are widely applied to purification of steel and high-temperature alloy liquid in the casting industry field, and most commonly used are a ceramic foam filter, a ball-packed granular filter and a grid or honeycomb ceramic filter, because the ceramic filters have special three-dimensional structures macroscopically and are made of porous materials, the ceramic filters have multiple effects of mechanical blocking, vortex capture and surface adsorption on inclusions in alloy liquid flow, the filtering efficiency on solid inclusions in the alloy liquid is high, and the inclusions in the alloy liquid can be controlled to be below 10 mu m under the condition that the porosity of the ceramic foam filter and the thickness of the filter are properly selected[5]The diameter of the filtering sphere of the granular filter and the thickness of the overall filter are properly selected, so that the inclusion in the alloy liquid can be controlled to be less than 5 mu m[6]. The honeycomb ceramic composition may also control the inclusions in the molten alloy to 30 μm or less.
Disclosure of Invention
The utility model aims at providing a can show the rotation type centrifugal filtration tundish that is used for clean steel continuous casting and rolling production that reduces molten steel inclusion content, improves steel cleanliness factor.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a rotary centrifugal filtering tundish for clean steel continuous casting and rolling production comprises a molten steel barrel, a molten steel barrel rotary supporting shaft, a molten steel barrel rotary bearing, a molten steel barrel rotary driving device, a filter, a high-pressure argon gas bag, a high-pressure air nozzle, an annular flow collecting groove supporting table and a heater;
the upper port of the molten steel barrel is provided with a heat-insulating cover, the bottom wall of the molten steel barrel is provided with a liquid outlet, and the bottom of the molten steel barrel is in running fit with the rotating support shaft of the molten steel barrel through a rotating bearing of the molten steel barrel; the molten steel barrel rotation driving device is provided with a driving motor and a transmission mechanism, and the driving motor drives the molten steel barrel to rotate through the transmission mechanism; the filter is arranged in a liquid outlet on the bottom wall of the molten steel barrel, the high-pressure argon bag is fixed on the outer wall of the molten steel barrel, the high-pressure air nozzle is arranged on the inner side wall of the molten steel barrel, the high-pressure argon bag sprays argon gas to the molten steel in the molten steel barrel through the high-pressure air nozzle, and a remotely-controllable gas flow and pressure adjusting device is arranged in the high-pressure argon bag; the annular flow collecting groove is arranged below the molten steel barrel and is used for receiving molten steel flowing out from a liquid outlet of the molten steel barrel, the annular flow collecting groove is arranged on the supporting table of the annular flow collecting groove, the heater is arranged on the outer side wall of the annular flow collecting groove and is used for heating the annular flow collecting groove and heating the molten steel flowing out from the liquid outlet of the molten steel barrel.
Further:
as the service life of the lining of the molten steel bucket of the tundish is generally 3-7 days, the molten steel bucket can be quickly arranged on an installation platform which is fixedly connected with a rotating part of a rotating bearing for supporting the molten steel bucket in order to facilitate the replacement operation of the molten steel bucket in a production line; the rotating bearing of the molten steel barrel can adopt an air bearing, a magnetic suspension bearing or a pressure bearing.
The motor of the molten steel barrel rotation driving device is arranged outside the side wall of the molten steel barrel and is a variable frequency motor. The transmission mechanism adopts a gear and gear ring transmission mechanism, a gear is connected with an output shaft of the motor, a gear ring is fixedly arranged on the outer wall of the molten steel barrel, and the gear is meshed with the gear ring. The motor drives the gear ring through the gear so as to drive the molten steel barrel to rotate.
The high-pressure argon bag is a high-pressure argon bag, and the high-pressure argon bag is installed outside the side wall of the molten steel barrel.
The liquid outlet that the ladle diapire established is 2 at least, and each liquid outlet is according to same circumference equipartition.
The circular collecting groove preferably has a shape of a lower rectangular shape with an upper funnel so as to receive and store a small amount of molten steel discharged from the centrifugal ladle. The collecting groove is built by refractory materials.
The core body of the filter is preferably made of high-temperature-resistant ceramic, and the filter can withstand the scouring of large-flow high-temperature molten steel for a long time (more than 2 hours). The high-temperature resistant ceramic core body can be any one of granular ceramics consisting of zirconia ball accumulation bodies, granular ceramics consisting of alumina ball accumulation bodies, high-strength zirconia foamed ceramic combinations, high-strength silicon carbide foamed ceramic combinations, high-strength alumina foamed ceramic combinations, honeycomb ceramic combinations and the like. The total length of the ceramic filter 3 is not less than 700mm, and the cross-sectional flow area of the filter is not less than 5 times of the sectional area of the water outlet of the tundish. Since the ceramic filter is disposable, it can be assembled separately and then laid in the refractory material at the water outlet. The ceramic filter can be preheated by using a special heating device before use.
The annular flow collecting groove supporting platform is preferably a liftable annular flow collecting groove supporting platform.
The heater is an electric heater;
compared with the prior art, the beneficial effects of the utility model are as follows:
the middle package of rotation type centrifugal filtration arrange the molten steel in the flow field of pivoting, then the inclusion granule that density is far less than iron element will receive strong centripetal force and to the gathering of flow field center except receiving Stokes buoyancy, the gathering granule is big more, then the come-up is easy more. The increased dynamic pressure of the steel melt, which can be obtained by centrifugal force, is more advantageous for passing through a high-density and long-length ceramic filter. The high-pressure argon gas bag is additionally arranged on the outer wall of the molten steel barrel, fine and dense argon bubbles are blown into molten steel through the refractory material lining in the tank, so that tiny impurities are attached to the surface of the bubbles to be gathered and float upwards more easily, the molten steel outlet is arranged at the position, far away from the center, of the bottom of the rotatable tundish and is filled with the high-density ceramic filter, the molten steel flows out of the rotatable molten steel barrel and then is collected in the fixed annular collecting groove below the molten steel barrel, the collecting groove corresponds to the track of the molten steel water outlet in the rotating process around the shaft, the molten steel flowing out of the molten steel barrel is received and stored in a small amount, and the heater is arranged on the side wall of the annular collecting groove so as to prevent the small amount. As mentioned above, under the combined action of the accumulation of the impurities in the centripetal force field, the argon cleaning and the high-strength filtration at the water outlet, the cleanliness of the molten steel can possibly reach the zero impurity level.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to the embodiment includes a molten steel tank 1, a molten steel tank mounting table 10, a molten steel tank support shaft 2, a molten steel tank rotating bearing 8, a molten steel tank rotation driving device, a filter 3, a high-pressure argon gas tank 41, a high-pressure gas nozzle 42, an annular collecting groove 5, a heater 7 and an annular collecting groove support table 6.
The upper port of the molten steel barrel 1 is provided with a heat preservation cover 11, the bottom wall of the molten steel barrel 1 is provided with a liquid outlet, and the bottom of the molten steel barrel is in running fit with the molten steel barrel rotating support shaft 2 through a molten steel barrel rotating bearing 8; the molten steel barrel rotation driving device is provided with a driving motor 91 and a transmission mechanism, and the driving motor 91 drives the molten steel barrel to rotate through the transmission mechanism; the filter 3 is arranged in a liquid outlet at the bottom wall of the molten steel barrel 1, the high-pressure argon bag 41 is fixed on the outer side wall of the molten steel barrel 1, the high-pressure air nozzle 42 is arranged on the side wall of the molten steel barrel 1, and the high-pressure argon bag 41 sprays argon to the inner cavity of the molten steel barrel 1 through the high-pressure air nozzle 42; the annular flow collecting groove 5 is arranged below the molten steel barrel 1, the annular flow collecting groove 5 is used for receiving molten steel flowing out from the liquid outlet of the molten steel barrel 1, the annular flow collecting groove 5 is arranged on the annular flow collecting groove supporting table 6, the heater 7 is arranged on the outer side wall of the annular flow collecting groove 5, and the heater 7 is used for heating the molten steel flowing out from the liquid outlet of the molten steel barrel 1.
The bottom of the molten steel barrel is fixed on a mounting platform 10, and the mounting platform 10 is in running fit with the molten steel barrel rotating support shaft 2 through a molten steel barrel rotating bearing 8; the rotating bearing 8 of the molten steel barrel can adopt an air bearing, a magnetic suspension bearing or a pressure bearing. The motor 91 of the molten steel barrel rotation driving device is arranged outside the side wall of the molten steel barrel 1, the transmission mechanism adopts a gear and gear ring transmission mechanism, a gear 92 is connected with an output shaft of the motor 91, a gear ring 93 is fixedly arranged on the outer wall of the molten steel barrel 1, and the gear 92 is meshed with the gear ring 93. The motor 91 drives the ring gear 93 via the gear 92 to rotate the ladle 1. The high-pressure argon bag 41 is a high-pressure argon bag which is arranged outside the side wall of the molten steel barrel 1. The liquid outlet that 1 diapire of ladle was established is 2, and 2 liquid outlets are according to same circumference equipartition. The shape of the rotary section of the annular collecting groove 5 is an upper trapezoid and a lower rectangle. The heater 7 is an electric heater; the core body of the filter 3 is made of high-temperature-resistant ceramic, and the filter can withstand the scouring of large-flow high-temperature molten steel for a long time (more than 72 hours). The high-temperature resistant ceramic core body is made of granular ceramic composed of zirconia ball accumulation bodies, (or granular ceramic of alumina ball accumulation bodies, high-strength zirconia foamed ceramic combinations, high-strength silicon carbide foamed ceramic combinations, high-strength alumina foamed ceramic combinations, honeycomb ceramic combinations and the like). The total length of the ceramic filter 3 is not less than 700mm, and the cross-sectional flow area of the filter 3 is not less than 5 times of the cross-sectional area of the water outlet of the tundish. The annular flow collecting groove supporting platform 6 is a liftable annular flow collecting groove supporting platform. The motor 91 is a variable frequency motor.
The rotary centrifugal filtering tundish for the production of the clean steel by continuous casting and rolling has the working mode that molten steel from a steel ladle of a steel making furnace is poured into a molten steel barrel of the tundish rotating at a certain speed, highly purified molten steel flows into a collecting groove from the molten steel barrel of the tundish, the outside of a water outlet of the collecting groove is directly inserted into a crystallizer of a steel rolling mill through a connecting pipe, and the molten steel flowing out of the collecting groove enters the steel rolling mill through the connecting pipe.
Reference made to the attached drawings before filing date
[1] Tundish technical metallurgy industry publisher 2009 for [ Mei ] Yogiwarsawahai, [ Ri ] Toshihiko Emi clean steel production
[2] Xue Wenhui, Song Mantang clean steel production continuous casting process practice steel 2004.9
[3] New progress "materials and metallurgy bulletins" 2002.9 of Lizhengbang ultraclean Steel
[4] Continuous casting process research on producing automobile panel by Schwerwinkle Benzeng Steel
[5] Influence of royal osmunda japonica plum wave filtering and purifying on mechanical properties of K4169 alloy secondary return material (special casting and non-ferrous alloy 2016.12)
[6] Dongcheng, Quwensheng, Lougong, etc. influence of filtration and purification of novel ceramic filter on organization performance of K417 returning material [ J ] material report, 2008,8 (album XI)
[7] Chinese patent CN201010549472.4
[8] Chinese patent CN102069147A
[9] Chinese patent CN201110062221.8
Claims (10)
1. A rotary centrifugal filtering tundish for clean steel continuous casting and rolling production is characterized by comprising a molten steel barrel, a molten steel barrel rotary supporting shaft, a molten steel barrel rotary bearing, a molten steel barrel rotary driving device, a filter, a high-pressure argon bag, a high-pressure air nozzle, an annular flow collecting groove supporting table and a heater;
the upper port of the molten steel barrel is provided with a heat-insulating cover, the bottom wall of the molten steel barrel is provided with a liquid outlet, and the bottom of the molten steel barrel is in running fit with the rotating support shaft of the molten steel barrel through a rotating bearing of the molten steel barrel; the molten steel barrel rotation driving device is provided with a driving motor and a transmission mechanism, and the driving motor drives the molten steel barrel to rotate through the transmission mechanism; the filter is arranged in a liquid outlet on the bottom wall of the molten steel barrel, the high-pressure argon bag is fixed on the outer wall of the molten steel barrel, the high-pressure air nozzle is arranged on the inner side wall of the molten steel barrel, the high-pressure argon bag sprays argon gas to the molten steel in the molten steel barrel through the high-pressure air nozzle, and a remotely-controllable gas flow and pressure adjusting device is arranged in the high-pressure argon bag; the annular flow collecting groove is arranged below the molten steel barrel and used for receiving molten steel flowing out from a liquid outlet of the molten steel barrel, the annular flow collecting groove is arranged on the supporting table of the annular flow collecting groove, the heater is arranged on the outer side wall of the annular flow collecting groove and used for heating the annular flow collecting groove and heating the molten steel flowing out from the liquid outlet of the molten steel barrel.
2. The rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to claim 1, wherein the molten steel barrel is mounted on a mounting table fixedly connected with a rotating part supporting the rotating bearing of the molten steel barrel.
3. The rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to claim 2, wherein the molten steel barrel rotary bearing is an air bearing, a magnetic suspension bearing or a pressure bearing.
4. The rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to claim 1, wherein the motor of the molten steel barrel rotation driving device is mounted on the outer side wall of the molten steel barrel and is a variable frequency motor; the transmission mechanism adopts a gear and gear ring transmission mechanism, a gear is connected with an output shaft of the motor, a gear ring is fixedly arranged on the outer wall of the molten steel barrel, and the gear is meshed with the gear ring.
5. The rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to claim 1, wherein the bottom wall of the molten steel barrel is provided with at least 2 liquid outlets, and the liquid outlets are uniformly distributed on the same circumference.
6. The rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to claim 1, wherein the rotary cross-section of the annular collecting trough is in the shape of an upper funnel and a lower rectangle, and the annular collecting trough is built by refractory materials.
7. The rotary centrifugal filtering tundish for the production of clean steel by continuous casting and rolling according to claim 1, wherein the core body of the filter is a high-temperature resistant ceramic core body, and the filter can withstand the scouring of high-flow high-temperature molten steel for more than 2 hours; the high-temperature resistant ceramic core body is made of any one of granular ceramics consisting of zirconia ball accumulation bodies, or granular ceramics consisting of alumina ball accumulation bodies, high-strength zirconia foamed ceramic combinations, high-strength silicon carbide foamed ceramic combinations, high-strength alumina foamed ceramic combinations, honeycomb ceramic combinations and the like.
8. The rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to claim 7, wherein the total length of the filter adopting the high-temperature resistant ceramic core is not less than 700mm, and the cross-sectional flow area of the filter is not less than 5 times of the cross-sectional area of the water outlet of the tundish.
9. The rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to claim 1, wherein the annular collecting tank support platform is a liftable annular collecting tank support platform.
10. The rotary centrifugal filter tundish for clean steel continuous casting and rolling production according to claim 1, wherein the heater is an electric heater; the driving motor is a variable frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110576.8U CN210450948U (en) | 2019-07-16 | 2019-07-16 | Rotary centrifugal filtering tundish for clean steel continuous casting and rolling production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110576.8U CN210450948U (en) | 2019-07-16 | 2019-07-16 | Rotary centrifugal filtering tundish for clean steel continuous casting and rolling production |
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| Publication Number | Publication Date |
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| CN210450948U true CN210450948U (en) | 2020-05-05 |
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| CN201921110576.8U Withdrawn - After Issue CN210450948U (en) | 2019-07-16 | 2019-07-16 | Rotary centrifugal filtering tundish for clean steel continuous casting and rolling production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110227814A (en) * | 2019-07-16 | 2019-09-13 | 航大(厦门)新材科技有限公司 | A kind of rotary and centrifugal filtering tundish for clean steel continuous casting and rolling production |
-
2019
- 2019-07-16 CN CN201921110576.8U patent/CN210450948U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110227814A (en) * | 2019-07-16 | 2019-09-13 | 航大(厦门)新材科技有限公司 | A kind of rotary and centrifugal filtering tundish for clean steel continuous casting and rolling production |
| CN110227814B (en) * | 2019-07-16 | 2024-04-02 | 航大(厦门)新材科技有限公司 | Rotary centrifugal filtering tundish for continuous casting and rolling production of clean steel |
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Inventor after: Wang Weiwei Inventor after: Liu Jianhua Inventor after: Yu Huan Inventor after: Zhao Guoqing Inventor before: Wang Weiwei Inventor before: Liu Jianhua Inventor before: Yu Huan Inventor before: He Mingliang Inventor before: Zhao Guoqing |
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