CN201565598U - Tundish quick-change lower nozzle used for metal continuous cast blank plate - Google Patents
Tundish quick-change lower nozzle used for metal continuous cast blank plate Download PDFInfo
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- CN201565598U CN201565598U CN2009202807062U CN200920280706U CN201565598U CN 201565598 U CN201565598 U CN 201565598U CN 2009202807062 U CN2009202807062 U CN 2009202807062U CN 200920280706 U CN200920280706 U CN 200920280706U CN 201565598 U CN201565598 U CN 201565598U
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- slag line
- lower nozzle
- metal continuous
- tundish quick
- utility
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Abstract
The utility model provides a tundish quick-change lower nozzle used for metal continuous cast blank plates. The tundish quick-change lower nozzle comprises a main body and a slag line, and is characterized in that the slag line is formed through composition of an inner slag line and an outer slag line, and a side hole is formed on the side surface at the bottom of the slag line. The main body, the inner slag line and the outer slag line are respectively constituted by refractory materials with different components and different mixing proportions. The utility model solves the problems of short service life of the lower nozzle products, low mechanical strength and high production cost in the prior.
Description
Technical field
The utility model is a kind of used for metal continuous casting plate blank tundish quick-replaceable sewage outlet, belongs to metal casting fused mass transfer unit, particularly in the metal continuous casting plate blank device, is installed in the following mouth of a river pouring nozzle between tundish and the crystallizer.
Background technology
Used for metal continuous casting plate blank tundish quick-replaceable sewage outlet is to be used for the disposable refractory component of direct casting, is one of functional part of most critical in the casting process.It is installed between tundish and the crystallizer; it is molten steel is transported to crystallizer from tundish passage; its function is that the protection molten steel is not oxidized; prevent that nitrogen from dissolving in or covering slag is sneaked into molten steel and prevent that molten steel from splashing, guarantee that molten steel has a rational flow field and temperature field distribution in crystallizer. under the slab quality quality at the mouth of a river be directly connected to whether continuous casting process can normally carry out, length and the slab quality of continuous casting time.Particularly slag line is most important position, the mouth of a river under the slab, is the position of easy generation quality accident, is again the following mouth of a river of the decision key position in service life.The conventional way of metal continuous casting plate blank tundish quick-replaceable sewage outlet of the prior art is that body material and slag line material are a kind of material, because the composition and the component of the refractory material that adopts are unreasonable, cause product high temperature resistant, thermal shock resistance is good inadequately, anti-erosion, thermal shock strength are not high enough, antistrip performance is not good, cause down mouth of a river product short service life, mechanical strength is low, production cost is high.
Summary of the invention
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and provide a kind of high temperature resistant thermal shock resistance to get well, the anti-erosion thermal shock strength is good, anti-strip excellence, long service life, mechanical strength height, used for metal continuous casting plate blank tundish quick-replaceable sewage outlet that production cost is low.
The purpose of this utility model can reach by following measure:
Used for metal continuous casting plate blank tundish quick-replaceable sewage outlet of the present utility model comprises body and slag line, it is characterized in that described slag line is composited by interior slag line and outer slag line, and the slag line bottom sides is provided with side opening.
Body of the present invention, interior slag line, outer slag line are made up of with the refractory material of different proportionings different component respectively, comprise following with component materials in parts by weight:
A. body material
Graphite 18-25
Alumine 24
#10-15
Alumine 36
#10-15
Alumine 150
#20-25
Quartzy 10-20
Metallic silicon 3-5
Carborundum 2-4
Boron glass powder 1-3;
B. interior slag line material
Graphite 18-33
White fused alumina 55-70
Metallic silicon power 2-4
Carborundum powder 2-4
Alumina powder 3-5;
C. outer slag line material
Graphite 6-20
Electric smelting stabilizing zirconia 75-90
Metallic silicon 1-3
Carborundum 1-3.
Slag line is most important position, the mouth of a river under the slab, it is the position of easy generation quality accident, it is again the decision mouth of a river key in service life, the ZrO2-C material is general slag line material, and the key that improves the mouth of a river down service life is exactly to improve the corrosion resistance of ZrO2-C material, the quality of the key element electric-melting zirconia raw material of major control, zirconic addition, zirconic granularmetric composition, the quality of crystalline flake graphite, suitable additive etc. inventor of the present utility model has taken into full account slag line inner anti-washing away in the mouth of a river under the slab, the outside anti-erosion of slag line, refractory material component and the proportioning of taking specification requirement with it to be complementary, adopt the technical scheme of inside and outside composite slag line, the anti-electric smelting stabilizing zirconia that washes away of outer employing is main material, and internal layer adopt anti-erosion effect preferably white fused alumina be main material, operation meticulously, and optimize, significantly reduced cost, also improved product quality.In addition, the design of the refractory material of mouth of a river body part has adopted alumine and quartz to replace normally used brown corundum and white fused alumina in the past, has reduced cost in the prerequisite that does not influence quality.
Used for metal continuous casting plate blank tundish quick-replaceable sewage outlet of the present utility model, its described body, interior slag line, outer slag line are made up of with the refractory material of different proportionings different component respectively, preferably consist of: comprise following with component materials in parts by weight:
A. body material
Graphite 20
Alumine 24
#15
Alumine 26
#13
Alumine 150
#25
Quartzy 20
Boron glass powder 2;
B. interior slag line material
Graphite 25
White fused alumina 65
Alumina powder 5;
C. outer slag line material
Graphite 10
Electric smelting stabilizing zirconia 85
Said components and proportioning are the disclosed optimized technical scheme of inventor.
Used for metal continuous casting plate blank tundish quick-replaceable sewage outlet of the present utility model, manufacturing a product reaches following technical indicator:
Bulk density g/cm
3〉=2.3
Strength at normal temperature Mpa 〉=5.5
Cold crushing strength Mpa 〉=19
Apparent porosity %≤19
Thermal shock resistance 〉=5.
The preparation method of used for metal continuous casting plate blank tundish quick-replaceable sewage outlet of the present utility model comprises the steps:
A. batch mixing:
According to drafting prescription accurately metering body material, interior lines material, each component of outside line 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:
Through more than 50 hours 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.
The manufacture method of used for metal continuous casting plate blank tundish quick-replaceable sewage outlet of the present utility model is applicable to the manufacturing at the mouth of a river under the metal continuous cast slab immersion of all size model.
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 high temperature resistant thermal shock resistance to get well, the anti-erosion thermal shock strength is good, anti-strip excellence, long service life, mechanical strength height, used for metal continuous casting plate blank tundish quick-replaceable sewage outlet and manufacture method thereof that production cost is low.
2. it is short service life to have solved mouth of a river product down of the prior art, the problem that mechanical strength is low, production cost is high.
3. descend mouth of a river product to reach following technical indicator: rupture strength＞4Mpa, compressive resistance＞16Mpa, compressive resistance＞16Mpa, apparent porosity＜20%, number of times＞5 are stablized in thermal shock.
4. the manufacture method of used for metal continuous casting plate blank tundish quick-replaceable sewage outlet of the present utility model is applicable to the manufacturing at the mouth of a river under the metal continuous cast slab immersion of all size model.
Description of drawings
Fig. 1 is a used for metal continuous casting plate blank tundish quick-replaceable sewage outlet structure of refractory schematic diagram;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Among the figure, 1-body, the outer slag line of 2-, slag line in the 3-, 4-side opening.
The specific embodiment
The utility model is described in further detail below in conjunction with embodiment:
As figure, used for metal continuous casting plate blank tundish quick-replaceable sewage outlet comprises body 1 and slag line, and described slag line is composited by interior slag line 3 and outer slag line 2, and slag line bottom side opening 4 is the molten steel outflow end.。
Embodiment:
A. batch mixing:
Body material: accurately measure graphite 20 weight portions, alumine 24
#15 weight portions, alumine 36
#13 weight portions, alumine 150
#25 weight portions, quartzy 20 weight portions, metallic silicon 3 weight portions, boron glass powder 2 weight portions drop in the body material high speed mixing roll, add jet printing type and add bond, and high speed is mixing evenly, and is standby;
Interior slag line material: accurately measure graphite 25 weight portions, white fused alumina 65 weight portions, metallic silicon power 3 weight portions, carborundum powder 2 weight portions, alumina powder 5 weight portions drop in the material high speed mixing roll of interior lines, add jet printing type and add bond, and high speed is mixing evenly, and is standby;
Outer slag line material: accurately measure graphite 10 weight portions, electric smelting stabilizing zirconia 85 weight portions, metallic silicon 3 weight portions in the slag line material high speed mixing roll, add jet printing type and add bond in carborundum 2 weight portions drop into, and high speed is mixing evenly, and is standby;
B. dry:
With the body material of step a preparation, interior slag line material, outer slag line material respectively drying equipment dry and put into constant temperature and humidity material storehouse after the serviceable condition and deposit, standby;
C. moulding:
Dry good body material, interior slag line material, the three kinds of raw material for refractory of outer slag line material of step b are packed into take 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:
Through more than 50 hours 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.
Product reaches following technical indicator:
Bulk density g/cm
32.35
Strength at normal temperature Mpa 6.3
Cold crushing strength Mpa 20.4
Apparent porosity % 16.9
Thermal shock resistance inferior 5.
Claims (1)
1. a used for metal continuous casting plate blank tundish quick-replaceable sewage outlet comprises body and slag line, it is characterized in that described slag line is composited by interior slag line and outer slag line, and the slag line bottom sides is provided with side opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202807062U CN201565598U (en) | 2009-12-09 | 2009-12-09 | Tundish quick-change lower nozzle used for metal continuous cast blank plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202807062U CN201565598U (en) | 2009-12-09 | 2009-12-09 | Tundish quick-change lower nozzle used for metal continuous cast blank plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201565598U true CN201565598U (en) | 2010-09-01 |
Family
ID=42657880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202807062U Expired - Lifetime CN201565598U (en) | 2009-12-09 | 2009-12-09 | Tundish quick-change lower nozzle used for metal continuous cast blank plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201565598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394442A (en) * | 2019-07-22 | 2019-11-01 | 浙江龙成耐火材料有限公司 | A kind of resistance to erosion corrosion resistance mouth of a river and preparation method thereof |
| CN113999008A (en) * | 2021-12-31 | 2022-02-01 | 北京利尔高温材料股份有限公司 | Low-carbon submersed nozzle lining and preparation method thereof |
-
2009
- 2009-12-09 CN CN2009202807062U patent/CN201565598U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394442A (en) * | 2019-07-22 | 2019-11-01 | 浙江龙成耐火材料有限公司 | A kind of resistance to erosion corrosion resistance mouth of a river and preparation method thereof |
| CN113999008A (en) * | 2021-12-31 | 2022-02-01 | 北京利尔高温材料股份有限公司 | Low-carbon submersed nozzle lining and preparation method thereof |
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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 |
Granted publication date: 20100901 |
|
| CX01 | Expiry of patent term |