CN203695949U - Bake-free long nozzle provided with carbon-free lining - Google Patents
Bake-free long nozzle provided with carbon-free lining Download PDFInfo
- Publication number
- CN203695949U CN203695949U CN201320723921.1U CN201320723921U CN203695949U CN 203695949 U CN203695949 U CN 203695949U CN 201320723921 U CN201320723921 U CN 201320723921U CN 203695949 U CN203695949 U CN 203695949U
- Authority
- CN
- China
- Prior art keywords
- carbon
- free
- long nozzle
- bake
- nozzle
- 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
- 239000000463 material Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000007770 graphite material Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 23
- 239000010959 steel Substances 0.000 abstract description 23
- 230000035939 shock Effects 0.000 abstract description 7
- 239000002893 slag Substances 0.000 abstract description 5
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract 1
- 230000003064 anti-oxidating effect Effects 0.000 abstract 1
- 239000003575 carbonaceous material Substances 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 7
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The utility model discloses a bake-free long nozzle provided with a carbon-free lining, which comprises a nozzle body (1), wherein the nozzle body is made of alumina-carbon material; the bake-free long nozzle is characterized in that a carbon-free lining layer (2) with a thickness of 0.5-4 mm is arranged on the inner wall of the nozzle body (1); the nozzle body (1) and the carbon-free lining layer (2) are integrally formed. According to the utility model, the carbon-free lining layer (2) with a thickness of 0.5-4 mm is arranged on the inner wall of the nozzle body (1) and has sufficient strength and hardness, so that the long nozzle has excellent thermal shock resistance, mechanical property, shaking resistance, and molten steel and slag erosiveness resistance; the surface of the nozzle has excellent anti-oxidation property; the bake-free long nozzle is suitable for popularization and application.
Description
Technical field
The utility model relates to plate ultra-low-carbon steel casting technique field, and what specifically a kind of aggressivity oxidation proof properties good, that the mouth of a river is surperficial with excellent thermal shock resistance, good mechanical performance and anti-vibration ability, anti-molten steel and slag was good exempts to toast long nozzle with carbon-free liner.
Background technology
The ratio of the current iron and steel continuous casting of China is up to more than 98%, and except extremely indivedual steel grades, general steel grade is all converted into steel billet by continuous casting by molten steel.But for some high-performance steel grades, in casting process refractory material select higher standard, ultra-low-carbon steel waters this problem that cast.Ultra-low-carbon steel has adopted special technique in steel-making and refining process, has ensured that carbon content is less than 300ppm.This steel has fabulous deep drawability and ductility (as above the IF steel of th century America Amoca Corp exploitation is for car panel), high-strength tenacity can be (as ultra-low-carbon bainite steel, this steel grade can be used for Arctic heavy caliber high pressure oil-gas pipeline), improve (as super-purity ferrite stainless steels) such as the stainless pitting corrosion resistance of traditional ferrite, toughness and processing characteristicies etc.The production process of ultra-low-carbon steel is except doing a large amount of work aspect steel-making and external refining, and all refractory materials that contact with molten steel all will be walked towards the direction of carbon-free combination.Aspect refractory brick, middle guarantor's refractory material for working layer, people make an adjustment, and the long nozzle that connects ladle and tundish is the important step that in addition another prevents carburetting.
When molten steel is by ladle during to basket pouring, for fear of oxidation with splash, in the lower end of the slide gate nozzle of ladle bottom, long nozzle is installed, the Yu Xia mouth of a river, one end is connected, and the other end inserts in the molten steel of tundish and carries out seal protection cast.The Main Function of long nozzle be prevent secondary oxidation of steel play improve that thereby the quality of steel, the oxidation product that reduces oxidizable element in steel extend its service life in mouth of a river inwall deposition, steel time of watering of improving long nozzle reduces refractory consumption rate; The long nozzle of producing at present also has certain distance from the requirement of steel industry.
Summary of the invention
The purpose of this utility model is the problem existing for existing long nozzle, provide a kind of aggressivity oxidation proof properties good, that the mouth of a river is surperficial with excellent thermal shock resistance, good mechanical performance and anti-vibration ability, anti-molten steel and slag good exempt to toast long nozzle with carbon-free liner.
The purpose of this utility model solves by the following technical programs:
With carbon-free liner exempt to toast a long nozzle, comprise the mouth of a river body that adopts alumina graphite material to make, it is characterized in that the inwall of described mouth of a river body is provided with the carbon-free inner liner that thickness is 0.5～4mm.
Described mouth of a river body is identical with the material that carbon-free inner liner adopts.
Described mouth of a river body is different with the material that carbon-free inner liner adopts.
Described mouth of a river body and carbon-free inner liner are one-body molded.
The utility model has the following advantages compared to existing technology:
The utility model is by arranging the carbon-free inner liner that thickness is 0.5～4mm on the inwall at mouth of a river body, because carbon-free inner liner has enough intensity and hardness, make this kind of long nozzle there is the aggressivity oxidation proof properties good, that the mouth of a river is surperficial of excellent thermal shock resistance, good mechanical performance and anti-vibration ability and anti-molten steel and slag good, suitable promoting the use of.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
Wherein: 1-mouth of a river body; 2-anti-oxidation glaze layer.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
As shown in Figure 1: a kind ofly exempt to toast long nozzle with carbon-free liner, comprise the mouth of a river body 1 that adopts alumina graphite material to make, on the inwall of mouth of a river body 1, be provided with and cover uniform carbon-free inner liner 2, the thickness of carbon-free inner liner 2 is the thermal shock resistance of 0.5～4mm to guarantee that long nozzle is good; Through inspection, the thickness of carbon-free inner liner 2 has a direct impact the performance of long nozzle, in the time that the thickness of carbon-free inner liner 2 is in 4mm, there is enough intensity and hardness, and there is good thermal shock resistance, but the thickness of carbon-free inner liner 2 exceedes after 4mm, can cause reduce the service life of whole long nozzle; Mouth of a river body 1 and carbon-free inner liner 2 one sinter moldings.Mouth of a river body 1 and carbon-free inner liner 2 can adopt identical material, also can adopt different materials.
The utility model is by arranging the carbon-free inner liner 2 that thickness is 0.5～4mm on the inwall at mouth of a river body 1, because carbon-free inner liner 2 has enough intensity and hardness, make this kind of long nozzle there is the aggressivity oxidation proof properties good, that the mouth of a river is surperficial of excellent thermal shock resistance, good mechanical performance and anti-vibration ability and anti-molten steel and slag good, suitable promoting the use of.
Above embodiment is only explanation technological thought of the present utility model, can not limit protection domain of the present utility model with this, every technological thought according to the utility model proposes, any change of doing on technical scheme basis, within all falling into the utility model protection domain; The technology that the utility model does not relate to all can be realized by prior art.
Claims (2)
- With carbon-free liner exempt to toast a long nozzle, comprise the mouth of a river body (1) that adopts alumina graphite material to make, it is characterized in that the inwall of described mouth of a river body (1) is provided with the carbon-free inner liner (2) that thickness is 0.5～4mm; Described mouth of a river body (1) is identical with the material that carbon-free inner liner (2) adopts; Described mouth of a river body (1) is different with the material that carbon-free inner liner (2) adopts.
- According to claim 1 arbitrary described with carbon-free liner exempt to toast long nozzle, it is characterized in that described mouth of a river body (1) and carbon-free inner liner (2) are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723921.1U CN203695949U (en) | 2013-11-18 | 2013-11-18 | Bake-free long nozzle provided with carbon-free lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723921.1U CN203695949U (en) | 2013-11-18 | 2013-11-18 | Bake-free long nozzle provided with carbon-free lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203695949U true CN203695949U (en) | 2014-07-09 |
Family
ID=51046448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320723921.1U Expired - Lifetime CN203695949U (en) | 2013-11-18 | 2013-11-18 | Bake-free long nozzle provided with carbon-free lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203695949U (en) |
-
2013
- 2013-11-18 CN CN201320723921.1U patent/CN203695949U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |