CN202667641U - Anti-flocculation upper water nozzle of tundish of air curtain - Google Patents
Anti-flocculation upper water nozzle of tundish of air curtain Download PDFInfo
- Publication number
- CN202667641U CN202667641U CN 201220279315 CN201220279315U CN202667641U CN 202667641 U CN202667641 U CN 202667641U CN 201220279315 CN201220279315 CN 201220279315 CN 201220279315 U CN201220279315 U CN 201220279315U CN 202667641 U CN202667641 U CN 202667641U
- Authority
- CN
- China
- Prior art keywords
- water nozzle
- tundish
- air curtain
- pipe end
- filling pipe
- 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 - Fee Related
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- Continuous Casting (AREA)
Abstract
The utility model provides an anti- flocculation upper water nozzle of a tundish of an air curtain. An air dispersion material layer with a height of 60-80 millimeters is filled below a siliceous glaze layer on the inner wall of the top of an upper water nozzle body, the air dispersion material layer is communicated with an air channel so that argon penetrates through the air dispersion material layer 8 to enter into a water nozzle through the air channel 5, and then a uniform air curtain is formed along the inner wall. The anti-flocculation upper water nozzle of the tundish of the air curtain is capable of achieving quantitative control of flow of the argon on the water nozzle of a crystallizer, preventing oxidizing material in molten steel from being mixed and adhering on the surface of the inner wall of the upper water nozzle, effectively preventing the water nozzle from flocculating and blocking, stabilizing fluctuation of a steel slag interface in the tundish and the crystallizer, reducing probability of rolling slag of the molten steel and steel breaking, prolonging service life of the water nozzle, and improving quality of a casting blank.
Description
Technical field
The utility model belongs to the continuous casting technology field, particularly the anti-wadding stream of a kind of air curtain for continuous casting tundish filling pipe end.
Background technology
Production practices show, one of greatest problem that affects strand and steel final mass and production capacity in the continuous casting production process is that mold gap wadding stream stops up.The nozzle blocking phenomenon that mouth of a river during cast wadding stream, dross cause can't satisfy the pouring practice of normal pulling rate, and mouth of a river wadding is dead when serious, causing disconnectedly waters, molten steel recovery accident; Mouth of a river wadding stream obstruction can cause that also the flow velocity of molten steel inflow crystallizer in the tundish is unstable, the turbulent flow aggravation, makes the molten steel in mold liquid fluctuating excessive, increase molten steel slag probability, thus cause the casting blank foreign matter defective, affect strand and end product quality.Can say, mouth of a river wadding stream stops up the rhythm of production that has a strong impact on product quality and whole steel making working procedure.Therefore, each steel plant generally adopts the method that is blown into argon gas from tundish upper nozzle, to alleviate and anti-waterstop port wadding stream clogging, prolongs the duration of pouring.But, the Argon filling pipe end that generally uses at present, major part belongs to diffusion-type, and namely whole filling pipe end material all has certain dispersivity, and the gas that is blown into by Argon all can be passed through by the inside and outside wall surface of filling pipe end.In the long-time casting process of molten steel, along with constantly being attached to the filling pipe end inner wall surface, passes through the waddings such as oxide inclusions in molten steel stream thing, to make more wadding stream thing be attached to the filling pipe end inwall, the ventilative dispersivity of its inwall continues to worsen, cause most of argon gas to be overflowed by the outer wall surface of easily passing through, thereby make Argon not have the effect of anti-mouth of a river wadding stream.
Summary of the invention
The utility model aims to provide a kind of can effectively alleviate and anti-waterstop port wadding stream stops up, and the stabilized steel slag interface fluctuation reduces molten steel slag probability, prolongs mouth of a river service life, improves the anti-wadding stream of the air curtain tundish filling pipe end of slab quality.
For this reason, the utility model has been taked following technology solution:
The anti-wadding stream of a kind of air curtain tundish filling pipe end, comprise body, aluminium carbonaceous density fireproof layer, siliceous glaze layer and base, it is characterized in that, be filled with one section ventilative disperse bed of material below the siliceous glaze layer of filling pipe end bodies top inwall, the ventilative disperse bed of material is communicated with gas passage.
The described ventilative disperse bed of material is the ventilative disperse material of aluminium carbonaceous.
Described ventilative disperse bed depth is 60-80mm.
Design feature of the present utility model and beneficial effect are:
The body inside and outside wall has the faint ventilative dispersivity of uniformity, inwall middle and upper part area filling has the ventilative disperse material of the aluminium carbonaceous of larger gas permeability, this bed of material fill area directly links to each other with gas passage, escape in the mouth of a river after making argon gas directly see through the ventilative disperse material fill area of inwall by gas passage, form even air curtain along inwall.
For preventing that the gas in the gas passage from being overflowed by lower surface, mouth of a river base lower surface adds the fine and close aluminum-carbon refractory material of one deck, after base outer wall scribbles one deck high-alumina chamotte, makes outermost layer surround between the box hat of base body and body bonding more firm, air-tightness is better, prevents base shell gas leakage.
Base is provided with two Argon pores, and one of them argon blowing hole communicates with the base lower surface annular groove, by be blown into argon gas to produce air-breathing between the buttcover plate that prevents filling pipe end and crystallizer submersed nozzle the oxidation molten steel.Another argon blowing hole links to each other with gas passage between the inside and outside wall of filling pipe end body, directly form even air curtain through escaping into mouth of a river inwall behind the ventilative disperse material fill area behind the argon gas admission passage that is blown into, thereby effectively stop oxide inclusions flocculation in the molten steel at mouth of a river inwall, alleviate mouth of a river wadding flow process degree.
Reorganize and outfit the bake process thermal-flame to the oxidation of the anti-material of filling pipe end aluminium carbonaceous for preventing tundish, all scribble certain thickness inoxidzable coating in filling pipe end top body inside with filling pipe end body outer wall, this coating is watered the steel temperature range and can naturally do not come off being lower than molten steel, can oxidation come off at the high-temperature molten steel casting process, coating both can be prevented the waterstop port oxidation, not affecting again the casting process argon gas is overflowed by mouth of a river inwall, the coating of filling pipe end outer wall also can play air tight effect, so that argon gas fully by mouth of a river inwall escape into the cast passage dirty with molten steel, thereby stop wadding stream thing to be bonded to mouth of a river inwall, alleviate mouth of a river wadding stream chocking-up degree, improve mouth of a river service life.
The utility model can be realized the quantification control of mold gap argon flow amount, prevent that oxide inclusions is attached to filling pipe end and submersed nozzle inner wall surface in a large number in the molten steel, effectively alleviate and the obstruction of anti-waterstop port wadding stream, stablize slag interface fluctuation in tundish and the crystallizer, reduce molten steel slag and bleed-out probability, prolong mouth of a river service life, thereby improve slab quality, steady production rhythm and reduce cost.
Description of drawings
Accompanying drawing is the anti-wadding stream of air curtain tundish filling pipe end structural representation.
Among the figure: aluminium carbonaceous density fireproof layer 1, box hat 2, base 3, siliceous glaze layer 4, gas passage 5, body 6, pouring channel 7, the ventilative disperse bed of material 8, Argon pore 9, annular groove 10.
The specific embodiment
By accompanying drawing as seen, the utility model is comprised of aluminium carbonaceous density fireproof layer 1, box hat 2, base 3, siliceous glaze layer 4 and body 6.Be pouring channel 7 in the middle of the body 6, the bottom is with base 3.Leave gas passage 5 between the inside and outside wall of filling pipe end body 6, scribble the thick siliceous glaze layer 4 of one deck 1mm at outer wall and the inwall top of body 6.The lower surface of filling pipe end base 3 is provided with the thick aluminium carbonaceous of one deck 20mm density fireproof layer 1, lower surface at aluminium carbonaceous density fireproof layer 1 is provided with annular groove 10 as ar gas passage, base 3 sidewalls are provided with two Argon pores 9, and the outer wall of base 3 scribbles chamotte, and the chamotte skin is surrounded by box hat 2.
The utility model is at under-filled one section ventilative disperse bed of material 8 that height is 75mm of the siliceous glaze layer 4 of filling pipe end body 6 top inner wall, the ventilative disperse bed of material 8 adopts the ventilative disperse material cast of aluminium carbonaceous to form, and the ventilative disperse bed of material 8 is communicated with gas passage 5, escape in the mouth of a river after making argon gas directly see through the ventilative disperse bed of material 8 of inwall by gas passage 5, form even air curtain along inwall.
Claims (3)
1. the anti-wadding of air curtain tundish flows filling pipe end, comprise body, aluminium carbonaceous density fireproof layer, siliceous glaze layer and base, it is characterized in that, be filled with one section ventilative disperse bed of material below the siliceous glaze layer of filling pipe end bodies top inwall, the ventilative disperse bed of material is communicated with gas passage.
2. the anti-wadding stream of air curtain tundish according to claim 1 filling pipe end is characterized in that, the described ventilative disperse bed of material is the ventilative disperse material of aluminium carbonaceous.
3. the anti-wadding stream of air curtain tundish according to claim 1 filling pipe end is characterized in that, described ventilative disperse bed depth is 60-80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220279315 CN202667641U (en) | 2012-06-14 | 2012-06-14 | Anti-flocculation upper water nozzle of tundish of air curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220279315 CN202667641U (en) | 2012-06-14 | 2012-06-14 | Anti-flocculation upper water nozzle of tundish of air curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202667641U true CN202667641U (en) | 2013-01-16 |
Family
ID=47488574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220279315 Expired - Fee Related CN202667641U (en) | 2012-06-14 | 2012-06-14 | Anti-flocculation upper water nozzle of tundish of air curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202667641U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475692A (en) * | 2015-01-09 | 2015-04-01 | 苏州诺瑞达新材料科技有限公司 | Molten aluminum flowing groove and manufacturing process |
| CN110997183A (en) * | 2017-08-08 | 2020-04-10 | 株式会社Posco | Nozzle with a nozzle body |
-
2012
- 2012-06-14 CN CN 201220279315 patent/CN202667641U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475692A (en) * | 2015-01-09 | 2015-04-01 | 苏州诺瑞达新材料科技有限公司 | Molten aluminum flowing groove and manufacturing process |
| CN104475692B (en) * | 2015-01-09 | 2017-02-22 | 苏州诺瑞达新材料科技有限公司 | Molten aluminum flowing groove and manufacturing process |
| CN110997183A (en) * | 2017-08-08 | 2020-04-10 | 株式会社Posco | Nozzle with a nozzle body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20180614 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |