CN201565601U - Tundish quick-change upper nozzle used for metal continuous cast blank plate - Google Patents
Tundish quick-change upper nozzle used for metal continuous cast blank plate Download PDFInfo
- Publication number
- CN201565601U CN201565601U CN2009202807058U CN200920280705U CN201565601U CN 201565601 U CN201565601 U CN 201565601U CN 2009202807058 U CN2009202807058 U CN 2009202807058U CN 200920280705 U CN200920280705 U CN 200920280705U CN 201565601 U CN201565601 U CN 201565601U
- Authority
- CN
- China
- Prior art keywords
- inner core
- upper nozzle
- tundish
- outer skin
- crust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 title claims abstract description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- 229910052786 argon Inorganic materials 0.000 claims abstract description 9
- 238000011049 filling Methods 0.000 claims description 27
- 238000009749 continuous casting Methods 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007664 blowing Methods 0.000 abstract description 2
- 239000011365 complex material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 22
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 description 7
- 239000010432 diamond Substances 0.000 description 7
- 229910003460 diamond Inorganic materials 0.000 description 7
- 239000010431 corundum Substances 0.000 description 6
- 229910052593 corundum Inorganic materials 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 239000004411 aluminium Substances 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
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000462 isostatic pressing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000011029 spinel Substances 0.000 description 2
- 229910052596 spinel Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- -1 magnesium aluminate Chemical class 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model provides a tundish quick-change air-permeable upper nozzle used for metal continuous cast blank plates. The tundish quick-change upper nozzle is characterized in that the nozzle comprises a bowl rim, an inner core, an outer skin and a plane mouthpiece, wherein the bowl rim and the plane mouthpiece are positioned at two ends of the upper nozzle; the inner core is positioned at the middle section of the inner wall of the upper nozzle; the outer skin is the outer wall of the upper nozzle and is combined with the bowl rim, the inner core and the plane mouthpiece; a slit is formed between the inner core and the outer skin; and an air-permeable slit is formed between the outer skin and the plane mouthpiece, is connected with an argon blowing graphite sleeve on the outer skin, and is communicated with the slit between the inner core and the outer skin. The tundish quick-change air-permeable upper nozzle solves the problems of multiple varieties of complex materials for moulding process of tundish air-permeable upper nozzle used for metal continuous cast blank plates, short service life of products, low mechanical strength and high production cost in the prior art.
Description
Technical field
The utility model is a kind of used for metal continuous casting plate blank tundish ventilating filling pipe end, belongs to metal casting fused mass transfer unit, particularly in the continuous casting of metal device, is installed in tundish bottom and immersion
The refractory material fused mass transfer unit that the mouth of a river is connected.
Background technology
Used for metal continuous casting plate blank tundish ventilating filling pipe end is to be used for the disposable refractory component of direct casting, and filling pipe end is installed on ladle and tundish bottom, is connected with submersed nozzle below.
In recent years, sequence casting, pour into a mould advanced casting technique at a high speed, prevent air suction and aluminium oxide for tundish upper nozzle stop up, aspects such as heat shock resistance fissility, erosion resisting, mar proof, high-intensity mechanical performance have all proposed high requirement, and product of the prior art is difficult to satisfy new casting technique requirement.In addition, the moulding process more complicated, manufacturing cost is higher.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of air that effectively prevents and sucks, prevents the obstruction of nonmetallic inclusion precipitation, motlten metal is flowed steadily, heat shock resistance is on good terms, anti-strip, anti-mobile molten steel and slag liquid corrode, resistance to wear, mechanical strength height, the continuous casting of metal that moulding process is simple, production cost is lower tundish slab ventilating filling pipe end.
The utility model used for metal continuous casting plate blank tundish ventilating filling pipe end, it is characterized in that forming by the rim of a bowl, inner core, crust and plane interface, the rim of a bowl and plane interface are positioned at the two ends of filling pipe end, inner core is positioned at the interlude of filling pipe end inwall, crust is that outer wall and the rim of a bowl, inner core and the plane interface of filling pipe end is compound, has slit between inner core and the crust, have ventilative seam between crust and the plane interface and be connected with Argon graphite bush on being located at crust, breathe freely seam and inner core communicate with slit between the crust.
The utility model inner core, the rim of a bowl and plane interface all adopt ventilative material when making, and crust adopts the top layer material, and the top layer material is made up of with the refractory material of different proportionings different component respectively with ventilative material.The utility model provides following a kind of prescription to form:
With component materials in parts by weight:
A. expect on the top layer:
Graphite 6-10
Alumine 24
#15-20
Alumine 36
#40-45
Palm fibre corundum 150
#20-25
Carborundum powder 2-4
Metallic silicon power 2-4;
B. ventilative material:
Graphite 6-10
Plate diamond spar 24
#25-30
Plate diamond spar 36
#20-30
Plate diamond spar 180
#20-25
Metallic silicon power 2-4
Metallic aluminium powder 1-2.
Alumina powder 7-10
Aluminum-spinel 5-8.
The technical solution of the utility model is by leaving the moulding production method of air-permeable layer in the middle of the composite bed, embed a kind of hot melt volatilization material (as wax) in the middle of the composite bed, produce and have the narrow air-permeable layer of meeting structure of blowing through drafting heating curve (as reaching the heating curve about 80 degree) through more than 20 hours, temperature, both so-called tundish slab ventilating filling pipe end, by being blown into argon gas, effectively anti-blocking.Make it in casting process; air-permeable layer (slit) in the middle of argon gas is blown into by Argon graphite bush ad hoc on the nozzle brick; see through the inwall of filling pipe end; molten steel is formed argon shield; make molten steel be difficult to the attached tundish upper nozzle inwall that is hung on; thereby avoid mouth of a river endoporus dross to stop up; the smooth stable needs that carry out the continuous pouring of many stoves have been guaranteed; thereby solved slab tundish life-span weak point, the refractory consumption rate height, it is surplus that each ladle all has molten steel to water; strand cutting head cutting tail and reclosing waste product molten steel waste are big; the shortcoming that recovery rate is low is stablized pulling rate simultaneously, guarantees slab quality; avoided bursting in the steel pouring process; not anti-wash away and accident such as bleed-out takes place; the disposable single bag that has increased substantially tundish wraps age, makes a ton steel refractory consumption, and labour's consumption etc. obviously reduces.Aspect material, adopt inside and outside composite molding mode, major ingredient in the material component of top layer alumine instead of part palm fibre corundum, it is the ventilative material of plate diamond spar that inner core, plane interface and the rim of a bowl all adopt major ingredient, both reduced cost, also because reduced the item number kind, moulding is more prone to, helps the raising of product quality.Thereby finished the utility model.
Continuous casting of metal of the present utility model tundish slab ventilating filling pipe end, product reaches following technical indicator:
Bulk density g/cm
3〉=2.3
Strength at normal temperature Mpa 〉=5.5
Normal pressure compressive resistance Mpa 〉=19
Apparent porosity %≤19
Thermal shock resistance 〉=5.
The preparation method of used for metal continuous casting plate blank tundish ventilating filling pipe end of the present utility model comprises the steps:
A. batch mixes:
According to drafting the accurate gauge table layered material of prescription, ventilative each component of material, drop into respectively in the high speed mixing roll separately, add jet printing type and add bond, high speed is mixing evenly, and is standby;
B. dry:
Drying equipment is dried and put into constant temperature and humidity material storehouse after the serviceable condition and deposit, and is standby;
C. moulding:
The dry good raw material for refractory of step b packed into takes to meet in the gum cover of technical requirement on design, with isostatic pressing machine at 125 MPa forming under the pressure;
D. oven dry:
With the semi-finished product oven dry of step c moulding, burn till fully;
F. burn till:
The burning kiln temperature is risen to 900 ℃, and insulation was burnt till under 900 ℃ in 50-60 hour, be equipped with Vehicle Processing;
G. Vehicle Processing:
Machine by technical requirement on design behind the kiln discharge;
H. whitewash, pack, the quality inspection warehousing after passing.
The technical solution of the utility model has outstanding substantive distinguishing features and obvious improvement compared to existing technology, produces following good effect:
1. provide a kind of air that effectively prevents to suck, prevent the obstruction of nonmetallic inclusion precipitation, motlten metal is flowed steadily, heat shock resistance is on good terms, anti-strip, anti-mobile molten steel and slag liquid corrode, resistance to wear, mechanical strength height, the used for metal continuous casting plate blank tundish ventilating filling pipe end that moulding process is simple, production cost is lower.Filling pipe end crust (top layer) materials are originally based on brown corundum, change into now based on the price alumine lower, reduced cost, because crust does not directly contact with molten steel than brown corundum, so by test, alumine replaces brown corundum no problem fully in the use.
2. solved that used for metal continuous casting plate blank tundish ventilating filling pipe end complex forming technology materials of the prior art are wide in variety, product is short service life, the problem that mechanical strength is low, production cost is high.
3. tundish ventilating filling pipe end product reaches following technical indicator: bulk density 3 〉=2.3g/cm
3, strength at normal temperature 〉=5.5Mpa, cold crushing strength 〉=19Mpa, apparent porosity≤19%, thermal shock resistance 〉=5 time.
Description of drawings
Fig. 1 is a used for metal continuous casting plate blank tundish ventilating filling pipe end section structure of refractory schematic diagram;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the B-B cutaway view among Fig. 2;
Fig. 4 is the A portion slot part enlarged diagram among Fig. 1.
Among the figure, 1-the rim of a bowl, 2-crust, 3-inner core, 4-plane interface, 5-slit, 6-Argon graphite bush, the ventilative seam of 7-
The specific embodiment
The utility model is described in further detail below in conjunction with embodiment:
As shown in the figure, used for metal continuous casting plate blank tundish ventilating filling pipe end of the present utility model is made up of inner core 3, crust 2, the rim of a bowl 1 and plane interface 4.The rim of a bowl 1 and plane interface 4 are positioned at the two ends of filling pipe end, inner core 3 is positioned at the interlude of filling pipe end inwall, crust 2 is that outer wall and the rim of a bowl, inner core and the plane interface of filling pipe end is compound, has slit 5 between inner core and the crust, have ventilative seam 7 between crust and the plane interface and is connected, breathe freely and stitch 7 and communicate with slit 5 between the crust with inner core with Argon graphite bush 6 on being located at crust.Inner core 3, the rim of a bowl 1 and plane interface 4 adopt ventilative material, and crust 2 adopts the top layer material.The about 2mm of slit 5 width.
Embodiment:
A. batch mixes:
Top layer material batch mixes:
Accurately take by weighing graphite 6 weight portions, alumine 24
#20 weight portions, alumine 36
#45 weight portions, brown corundum 150
#25 weight portions, carborundum powder 2 weight portions, metallic silicon power 2 weight portions in the input table layered material high speed mixing roll, add jet printing type and add bond, and high speed is mixing evenly, and is standby;
Ventilative material batch mixes:
Accurately take by weighing graphite 6 weight portions, plate diamond spar 24
#25 weight portions, plate diamond spar 36
#30 weight portions, plate diamond spar 180
#21 weight portions, metallic silicon power 3 weight portions, metallic aluminium powder 2 weight portions, alumina powder 8 weight portions in the ventilative material of the magnesium aluminate spinel 5 weight portion inputs high speed mixing roll, add jet printing type and add bond, and high speed is mixing evenly, and is standby;
B. dry:
Drying equipment is dried and put into constant temperature and humidity material storehouse after the serviceable condition and deposit, and is standby;
C. moulding:
The dry good raw material for refractory of step b packed into takes to meet in the gum cover of technical requirement on design, with isostatic pressing machine at 125 MPa forming under the pressure;
D. oven dry:
With the semi-finished product oven dry of step c moulding, burn till fully;
F. burn till:
The burning kiln temperature is risen to 1020 ℃, and insulation was burnt till under 1020 ℃ in 50-60 hour, be equipped with Vehicle Processing;
G. Vehicle Processing:
Machine by technical requirement on design behind the kiln discharge;
H. whitewash, pack, the quality inspection warehousing after passing.
Make continuous casting of metal and reach following technical indicator with tundish slab ventilating filling pipe end product:
Bulk density g/cm
32.35
Strength at normal temperature Mpa 6.0
Normal pressure compressive resistance Mpa 19.8
Apparent porosity % 17.8
Thermal shock resistance inferior 5.
Claims (1)
1. used for metal continuous casting plate blank tundish ventilating filling pipe end, it is characterized in that by the rim of a bowl (1), inner core (3), crust (2) and plane interface (4) are formed, the rim of a bowl (1) and plane interface (4) are positioned at the two ends of filling pipe end, inner core (3) is positioned at the interlude of filling pipe end inwall, crust (2) is outer wall and the rim of a bowl of filling pipe end, inner core and plane interface are compound, has slit (5) between inner core and the crust, have ventilative seam (7) between crust and the plane interface and is connected, breathe freely and stitch (7) and inner core and communicate with slit (5) between the crust with Argon graphite bush (6) on being located at crust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202807058U CN201565601U (en) | 2009-12-09 | 2009-12-09 | Tundish quick-change upper nozzle used for metal continuous cast blank plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202807058U CN201565601U (en) | 2009-12-09 | 2009-12-09 | Tundish quick-change upper nozzle used for metal continuous cast blank plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201565601U true CN201565601U (en) | 2010-09-01 |
Family
ID=42657883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202807058U Expired - Lifetime CN201565601U (en) | 2009-12-09 | 2009-12-09 | Tundish quick-change upper nozzle used for metal continuous cast blank plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201565601U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166647A (en) * | 2011-03-01 | 2011-08-31 | 胜威高温陶瓷(鞍山)有限公司 | Argon blowing sealed upper water gap |
| CN105965004A (en) * | 2016-07-07 | 2016-09-28 | 宜兴市耐火材料有限公司 | Composite lower nozzle brick |
| CN108285351A (en) * | 2018-02-01 | 2018-07-17 | 马鞍山市益江高温陶瓷制造有限公司 | A kind of tundish upper nozzle spinel material and its application |
-
2009
- 2009-12-09 CN CN2009202807058U patent/CN201565601U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166647A (en) * | 2011-03-01 | 2011-08-31 | 胜威高温陶瓷(鞍山)有限公司 | Argon blowing sealed upper water gap |
| CN105965004A (en) * | 2016-07-07 | 2016-09-28 | 宜兴市耐火材料有限公司 | Composite lower nozzle brick |
| CN108285351A (en) * | 2018-02-01 | 2018-07-17 | 马鞍山市益江高温陶瓷制造有限公司 | A kind of tundish upper nozzle spinel material and its application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 255130 west end, Zichuan Economic Development Zone, Zibo, Shandong Patentee after: Shandong Dongnai High Temperature Material Co., Ltd. Address before: 255100 Shandong Zibo East high temperature resistant material Co., Ltd., Shandong District, Zichuan Economic Development Zone, China Patentee before: Shandong Dongnai High Temperature Material Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |