CN1305602C - Nozzle for continuous casting of aluminum killed steel and continuous casting method - Google Patents
Nozzle for continuous casting of aluminum killed steel and continuous casting method Download PDFInfo
- Publication number
- CN1305602C CN1305602C CNB038096293A CN03809629A CN1305602C CN 1305602 C CN1305602 C CN 1305602C CN B038096293 A CNB038096293 A CN B038096293A CN 03809629 A CN03809629 A CN 03809629A CN 1305602 C CN1305602 C CN 1305602C
- Authority
- CN
- China
- Prior art keywords
- nozzle
- cao
- refractory material
- inner hole
- killed steel
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/52—Manufacturing or repairing thereof
- B22D41/54—Manufacturing or repairing thereof characterised by the materials used therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Continuous Casting (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention provides a technique of applying a CaO-containing material to a nozzle unit for casting of aluminum-killed steel, in such a manner that the amount of large-size alumina inclusions in slabs can be reduced irrespective of nozzle type, such as single-part type or multi-part type. The amount of large-size alumina inclusions in slabs obtained using a single-part type or multi-part type nozzle unit, which has an inner hole to be used for pouring molten steel from a tundish to a mold therethrough and CaO-containing refractories applied to a surface of the inner hole, has a strong correlation with the entire surface area of the inner hole of the nozzle unit and the amount of CaO contained in the employed refractories. According to the present invention, 50% or more of the entire surface area of the inner hole of the nozzle unit is formed of refractories containing 20 mass % or more of CaO to allow the amount of large-size alumina inclusions to be reduced.
Description
Technical field
The present invention relates to be used to cast continuously the nozzle and the occupation mode thereof of aluminum killed steel.
Background technology
When the casting aluminum killed steel, adhere to aluminium oxide in the inner hole surface that is used for the nozzle of this casting (to call nozzle in the following text), these aluminium oxide that adhere to are incorporated into and have just formed large-scale field trash together, and it enters in the casting sheet with the steel stream of fusion, cause casting sheet defective, quality is reduced.
In recent years especially for the aluminum killed steel of casting as high-grade steels such as thin plates, its steel quality requires very strict, follow in this, aspect continuous casting, a lot of effort have been done for the endoporus adhesion aluminium oxide of the nozzle that prevents from when tundish (to call " TD " in the following text) injects the steel stream of fusion to model, to use.
As one of its countermeasure, have in nozzle towards the steel stream of fusion and be blown into argon gas, prevent the physical method that aluminium oxide adheres to.But when implementing this method, if it is too much to be blown into the amount of argon gas, the steel stream that bubble just enters into fusion becomes the interior pore of casting sheet, causes defective, therefore being blown into this argon gas is being restricted aspect the amount that is blown into gas, as the means that prevent that aluminium oxide from adhering to, must consider sufficient countermeasure.
In addition, as one of above-mentioned countermeasure, have and make the refractory material itself that constitutes nozzle have the method that prevents the aluminium oxide adhesion function.This is to make to contain CaO in the brick, the aluminium oxide of CaO and adhesion is reacted generate lowly to melt thing, prevents to adhere to more aluminium oxide.For example, the use that disclosed of Japanese Patent Publication 61-44836 communique the casting nozzle of the raw material that makes up with raw material of other ceramic industries of graphite and sintering oxidation calcium, electricity being melted calcium oxide or containing the CaO composition as the refractory material of main component.
Usually when cast steel,, has the single type that Splittable that a plurality of nozzles that will separate as shown in Figure 1 make up and the nozzle by single as shown in Figure 2 constitute as the steel stream of fusion is injected into nozzle the model from TD.
The Splittable nozzle makes up and constitutes being installed in upper nozzle 2, slip nozzle 3, the lower nozzle 4 of the bottom opening of tundish 1 and being immersed in immersion nozzle 5 in the model 6, by the opening degree of adjustment slip nozzle 3 peristomes, and the flow of control in model 6.This Splittable nozzle has the function of better controlled flow, and liquid level stabilizing.Therefore not only under certain condition stable casting becomes possibility, and is also fine aspect security, is widely used.
The single type nozzle is the stream in forming from the bottom opening of tundish 1 to model 6 by a long immersion nozzle 8, and by being configured in the long stopper 7 in the tundish 1, the opening degree of the bottom opening of adjustment tundish 1 is controlled the flow in model 6.
If the material of the above-mentioned CaO of containing is used for the inner hole surface of above-mentioned two kinds of nozzles, under the situation of as shown in Figure 2 single type nozzle, can reduce the adhesion of aluminium oxide on the inner hole surface really, also reduced the field trash of large-scale alumina series.But in the time of on a part of individual nozzles that is used for Splittable as shown in Figure 1, compare with the situation that is used for the single type nozzle, the large-scale alumina series field trash in the casting sheet has the tendency that increases.
In the casting method of utilizing above-mentioned single type nozzle, contact with air hardly by the molten steel stream in the nozzle, but when using the Splittable nozzle, air flows into from the seam of nozzle, especially the nozzle (to call " SN " in the following text) that slides in use must slide, therefore the sealing between the contact-making surface is difficult to, and air is invaded between the contact-making surface.
Aluminum killed steel is dissolved aluminum in the steel stream of fusion, if contact with air, will oxidation generate aluminium oxide.The aluminium oxide of Sheng Chenging enters in the casting sheet like this can become the alumina series field trash.Under the situation of the Splittable nozzle that constitutes by a plurality of nozzles that separate, be used for specific nozzle even will contain the refractory material of CaO, aluminium oxide also can stick on the nozzle that does not have to use the refractory material contain CaO, the therefore synthetic aluminium oxide that maximizes and entering in the casting sheet.
Summary of the invention
The object of the present invention is to provide a kind of nozzle, when the material that will contain CaO is used to cast on the nozzle of aluminum killed steel,, the amount of alumina series field trash large-scale in the casting sheet is reduced no matter be all kinds such as single type or Splittable.
Another purpose is to provide a kind of casting method of aluminum killed steel, can reduce the amount of the medium-and-large-sized alumina series field trash of casting sheet significantly, reduction in the numbers of seconds.
The refractory material that will contain CaO respectively is used for injecting in model from tundish the endoporus separately of the various nozzles of molten steel stream, the result of the large-scale alumina series field trash amount in the casting sheet that inquiry agency gets, have very strong correlation between the amount of CaO in the gross area of this amount and nozzle inner hole surface and the refractory material of use, the present invention finishes according to the concrete value conditions that is suitable for above-mentioned quantity.
Be that the present invention utilizes the quality that contains CaO to form more than 50% of the inner hole surface gross area that injects the employed nozzle of molten steel stream from tundish to model at the refractory material more than 20%.
As the situation of the nozzle of above-mentioned Splittable shown in Figure 1 under, be used for inner hole surface partly even will contain the refractory material of CaO, aluminium oxide also can stick to not to be had to use on the nozzle of the refractory material that contains CaO, and the synthetic aluminium oxide that maximizes of the aluminium oxide of adhesion enters in the casting sheet.
Quality by will containing CaO is used for the inner hole surface of the gross area more than 50% of the nozzle inner hole surface that molten steel stream flows down at the refractory material more than 20%, utilization contains the effect of the adsorption and oxidation aluminium that refractory material had of CaO and CaO and aluminium oxide reaction and the low thing that melts that generates is in a liquid state and the effect of smooth bore face, and prevent to adhere to aluminium oxide, prevent the complementary effect of the effect of aluminium oxide zoarium that the amount of the large-scale field trash of alumina series in the casting sheet of gained reduces significantly.
For bringing into play its complementary effect, the refractory material that contains CaO must be used on the inner hole surface of the inner hole surface gross area more than 50% of nozzle.If not enough 50%, the effect that reduces the amount of aluminium oxide in the flow model just reduces, and the effect of improving that reduces the amount of the large-scale field trash of alumina series in the casting sheet just reduces.Be preferably in more than 60%, be more preferably the integral body of utilizing the refractory material that contains CaO to constitute whole nozzle inner hole surface, but containing the place that the refractory material generation melting loss of CaO, abrasion etc. produce the problem on using by use, it is very important corresponding to this former service conditions such as refractory material to select to be fit to use.
The present invention accounts for nozzle-integrated more than 50% of endoporus area if contain the refractory material of CaO, just goes for following any occasion: upper nozzle and immersion nozzle; Perhaps SN and immersion nozzle; Perhaps upper nozzle and SN and immersion nozzle; It further no matter is the situation of the so-called Splittable that is made up by upper nozzle and SN and immersion nozzle as shown in Figure 1; Or situation about being made of the immersion nozzle monomer as shown in Figure 2 can be used.Even the situation of above-mentioned Splittable further, comprise upper nozzle and SN or SN and lower nozzle make the occasion of the nozzle that is integral also can be suitable equally.And under the situation of above-mentioned single type,, just can obtain to cast the effect that tablet quality improves significantly if reach nozzle-integrated being used more than 50% of the inner hole surface gross area even contain the refractory material of CaO in the part use of nozzle inner hole surface.
Do not reach 20 quality % if be used for the CaO amount of the refractory material of nozzle inner hole surface, the adsorption capacity of aluminium oxide and prevent that the ability that aluminium oxide adheres to from just reducing, the improvement degree of the amount of the large-scale field trash of alumina series in the casting sheet just reduces, and therefore must reach more than the 20 quality %.
If from reducing the effect of the large-scale alumina series field trash existence in the casting sheet, the CaO amount that contains in the refractory material does not have the upper limit, if many but CaO becomes, just have melting loss and strengthens, the easy situation of digestion, therefore adapting to service condition, to carry out suitable adjustment be very important.Under general casting condition, if the amount of CaO is just enough about 60%.
The example of refractory material can be enumerated as MgO-CaO series refractory material, MgO-CaO-C series refractory material, ZrO preferably
2-CaO series refractory material, ZrO
2-CaO-C series refractory materials etc., particularly MgO-CaO series refractory material, MgO-CaO-C series refractory material alumina adsorption ability are fine and more welcome.
The inner surface that contact with steel stream that the refractory material that contains CaO is used for nozzle at least is very important, and inner hole surface position in addition also can be used and the inner hole surface identical materials, also can be used as it is the refractory material that is used for general nozzle.
In addition, the continuous casing of aluminum killed steel of the present invention, make by having used the nozzle that contains the CaO refractory material that the large-scale alumina series field trash more than the 50 μ m in the steel stream of the fusion casting sheet when tundish is injected into the model is reduced on the inner hole surface, it is characterized in that, using on the inner hole surface of the nozzle that contains the CaO refractory material on the described inner hole surface, the ratio that contains CaO refractory material area occupied and the nozzle endoporus gross area is more than 50%; And the described CaO of containing refractory material is MgO-CaO series refractory material or MgO-CaO-C series refractory material, and the content of CaO is more than the 20 quality %, below the 60 quality %.According to the present invention, can prevent effectively that the aluminate of 50 μ m diameters from flowing into steel billet.
Description of drawings
Shown in Figure 1 is example as the operable nozzle of the present invention, and the structural map of the Splittable nozzle that a plurality of nozzles of SN constitute is installed.
Shown in Figure 2 is example as the operable nozzle of the present invention, the structural map of single type nozzle.
Shown in Figure 3 is the relation that contains the large-scale alumina series field trash that exists in whole area ratio of the shared nozzle inner hole surface of refractory material of CaO and the gained casting sheet.
Shown in Figure 4 is the relation that forms the large-scale alumina series field trash that exists in the casting sheet of the average CaO amount of refractory material of nozzle inner hole surface and gained.
The specific embodiment
The embodiment that the present invention is used for Splittable nozzle shown in Figure 1 is shown.
Table 1
| Material | A | B | C | D | |
| Form quality % | | 40 | 50 | -- | -- |
| MgO | 30 | 46 | -- | -- | |
| AL 2O 3 | -- | -- | 70 | 96 | |
| C | 30 | 4 | 30 | 4 | |
Table 1 utilizes A-D to represent to be used to constitute the composition of the material of each nozzle of cutting apart nozzle shown in Figure 1.With materials A and the B shown in the table is the material that contains CaO related to the present invention, and material C and D are the materials that does not contain CaO that is used for comparison.
The forming materials sintering of A-D is processed into the cover tubular of 10 centimetres of thickness, makes the formed refractory body, insert the nozzle endoporus, become nozzle shown in Figure 1 with the mud bonding.Materials A and C are used for immersion nozzle, B and D are used for upper nozzle and slip nozzle (SN) and lower nozzle.
Table 2 will use the area of inner hole surface of each nozzle of the refractory material that contains CaO to amass as bore area to be represented.
Table 2
| Bore area amasss (square centimeter) | |
| Upper nozzle | 393 |
| The slip nozzle | 438 |
| Lower nozzle | 368 |
| Immersion nozzle | 915 |
Investigation is used for the material of this nozzle to the influence that the casting tablet quality brings, and investigates the result of use of the refractory material that contains CaO.Investigation is according to the combination that changes nozzle, at the pot capacity is that 250 tons, TD capacity are that 45 tons, the drawing speed of casting sheet are under the casting condition that divides of 1.0-1.3m/, carry out the casting of aluminum killed steel, contain the above large-scale alumina series field trash of 50 μ m in the casting sheet that obtains, in the number of per unit area, investigate its effect.
Table 3
| | Embodiment | |||||||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | |||||||||
| The endoporus material therefor | Upper nozzle | D | B | D | D | D | B | D | B | D | D | B | B | B | B | |||||||
| The slip nozzle | D | D | B | D | D | B | B | D | B | B | B | B | D | B | ||||||||
| Lower nozzle | D | D | D | B | D | D | B | D | D | B | B | D | B | B | ||||||||
| Immersion nozzle | C | C | C | C | A | C | C | A | A | A | C | A | A | A | ||||||||
| CaO endoporus area % *1 | 0 | 19 | 21 | 17 | 43 | 39 | 38 | 62 | 64 | 61 | 57 | 83 | 79 | 100 | ||||||||
| The | 100 | 90 | 87 | 92 | 75 | 80 | 82 | 15 | 13 | 16 | 22 | 6 | 7 | 3 | ||||||||
*1 endoporus portion contain the Ca material area ratio shared with respect to the endoporus gross area
*The number of 2 large-scale alumina series field trashes (index is as 100 with comparative example 1)
This investigation result of table 3 expression.In table, with the number of utilizing the large-scale alumina series field trash in the casting sheet that the Splittable nozzle obtained of comparative example 1 as 100, with other each routine numbers of this exponential representation.Thereby the expression index is more little to be exactly the good casting sheet of the few more quality of large-scale alumina series field trash.
Fig. 3 is the pictorialization as a result with table 3, contains the relation of the number of all area ratios of the shared nozzle inner hole surface of refractory material of CaO and large-scale alumina series field trash.
Reach more than 50% if contain all area ratios of the shared nozzle inner hole surface of the refractory material of CaO as can be seen from the figure, the number of field trash reduces significantly, and the quality of casting sheet improves.And the quality of casting sheet increases along with the area ratio of the refractory material that contains CaO and becomes better, and the refractory material that preferably will contain CaO is used for the whole of nozzle inner hole surface.
Investigation is under the situation of nozzle shown in Figure 1 structure below, contains the influence that the amount of CaO in the refractory material of CaO brings the casting tablet quality.
Table 4
| Material | A | B | E | F | G | H | I | J | K | L | |
| Form quality % | | 40 | 50 | 10 | 15 | 20 | 30 | 10 | 15 | 20 | 30 |
| MgO | 30 | 46 | 60 | 55 | 50 | 40 | 76 | 71 | 66 | 56 | |
| C | 30 | 4 | 30 | 30 | 30 | 30 | 4 | 4 | 4 | 4 | |
Be shown in the table 4 on the basis that the A shown in the table 1, B form, the example of the refractory material that contains CaO that expression E-L forms.It is the same with the situation of the material shown in the table 1 to contain the refractory material of CaO with these, forming and sintering is processed into the cover tubular, make the formed refractory body, insert the nozzle of making test usefulness in the nozzle with the mud bonding, in Fig. 1, A, E, F, G, H are used for immersion nozzle 5, B, I, J, K, L are used for upper nozzle 2, SN3 and lower nozzle 4.
The surface area of the endoporus of each nozzle is identical with table 2.
Be that investigation utilizes the synthetic Splittable nozzle as shown in Figure 1 of these nozzle sets, the result who casts the casting tablet quality that is obtained under above-mentioned similarity condition shown in the table 5.Quality evaluating method is the same with the situation of table 3.
Table 5
| | Embodiment | ||||||||
| 8 | 9 | 8 | 9 | 10 | |||||
| The endoporus material therefor | Upper nozzle | I | J | K | L | B | |||
| The slip nozzle | I | J | K | L | B | ||||
| Lower nozzle | I | J | K | L | B | ||||
| Immersion nozzle | E | F | G | H | A | ||||
| Large-scale alumina | 80 | 65 | 20 | 14 | 3 | ||||
*The number of 1 field trash is to utilize comparative example 1 is represented as 100 index.
The result of table 5 is organized among Fig. 4 the relation of the amount of the average CaO of the endoporus refractory material of expression nozzle and the number of large-scale alumina series field trash.As shown in the drawing, if more than 20 quality %, casting the quality of sheet, can be improved significantly the average amount that shows the CaO in the endoporus refractory material.
The possibility of industrially utilizing
The present invention goes for when cast aluminum-molykote composite material killed steel, be used for significantly reducing slab large-scale alumina series field trash amount no matter be the various nozzles of Splittable or single type.
Claims (4)
1. the continuous casing of an aluminum killed steel, the method for continuous production of described aluminum killed steel, make by having used the nozzle that contains the CaO refractory material that the large-scale alumina series field trash more than the 50 μ m in the steel stream of the fusion casting sheet when tundish is injected into the model is reduced on the inner hole surface, it is characterized in that:
Using on the inner hole surface of the nozzle that contains the CaO refractory material on the described inner hole surface, the ratio that contains CaO refractory material area occupied and the nozzle endoporus gross area is more than 50%;
And the described CaO of containing refractory material is MgO-CaO series refractory material or MgO-CaO-C series refractory material, and the content of CaO is more than the 20 quality %, below the 60 quality %.
2. the continuous casing of killed steel as claimed in claim 1, it is characterized in that: the described CaO of containing refractory material is the MgO-CaO-C series refractory material, in this MgO-CaO-C series refractory material the content of carbon be 4 quality % above, below the 30 quality %.
3. the continuous casing of killed steel as claimed in claim 1 or 2 is characterized in that: the described CaO of containing refractory material is shaped as the cover tubular.
4. the continuous casing of killed steel as claimed in claim 1, it is characterized in that: described nozzle is the nozzle of Splittable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002128337A JP4249940B2 (en) | 2002-04-30 | 2002-04-30 | Aluminum killed steel casting method |
| JP128337/2002 | 2002-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1649684A CN1649684A (en) | 2005-08-03 |
| CN1305602C true CN1305602C (en) | 2007-03-21 |
Family
ID=29397265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038096293A Expired - Fee Related CN1305602C (en) | 2002-04-30 | 2003-04-30 | Nozzle for continuous casting of aluminum killed steel and continuous casting method |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20050200057A1 (en) |
| EP (1) | EP1504831B1 (en) |
| JP (1) | JP4249940B2 (en) |
| KR (1) | KR100835398B1 (en) |
| CN (1) | CN1305602C (en) |
| AU (1) | AU2003235985A1 (en) |
| BR (1) | BR0309646B1 (en) |
| DE (1) | DE60326948D1 (en) |
| MX (1) | MXPA04010796A (en) |
| WO (1) | WO2003092929A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356052A (en) * | 2010-05-07 | 2012-02-15 | 黑崎播磨株式会社 | Refractory, continuous casting nozzle comprising the refractory, process for production of a continuous casting nozzle, and continuous casting method using the continuous casting nozzle |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005018851A1 (en) * | 2003-08-22 | 2005-03-03 | Krosakiharima Corporation | Immersion nozzle for continuous casting of steel and meethod for continuous casting of steel using the immersion nozzle |
| WO2005087406A1 (en) * | 2004-03-15 | 2005-09-22 | Krosakiharima Corporation | Nozzle for use in continuous casting |
| JP4926819B2 (en) * | 2006-05-26 | 2012-05-09 | 新日本製鐵株式会社 | Steel continuous casting method |
| CN102164695B (en) | 2008-07-28 | 2014-03-12 | 新日铁住金株式会社 | Refractory for nozzle used in continuous casting and nozzle for continuous casting |
| JP6228524B2 (en) * | 2013-09-27 | 2017-11-08 | 日新製鋼株式会社 | Continuous casting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0494851A (en) * | 1990-08-09 | 1992-03-26 | Akechi Ceramics Kk | Nozzle for continuous casting |
| JPH04158963A (en) * | 1990-10-19 | 1992-06-02 | Nippon Steel Corp | Nozzle for continuous casting |
| JPH0532456A (en) * | 1991-07-29 | 1993-02-09 | Tokyo Yogyo Co Ltd | Refractory material |
| JPH05154627A (en) * | 1991-08-19 | 1993-06-22 | Shinagawa Refract Co Ltd | Refractory composition for preventing stickness and deposition of non-metallic inclusions |
| JPH05285612A (en) * | 1992-04-13 | 1993-11-02 | Kurosaki Refract Co Ltd | Nozzle inner hole body for continuous casting |
| JPH0839214A (en) * | 1994-07-30 | 1996-02-13 | Kurosaki Refract Co Ltd | Nozzle for continuous casting |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4568007A (en) * | 1984-01-23 | 1986-02-04 | Vesuvius Crucible Company | Refractory shroud for continuous casting |
| JP2542585B2 (en) * | 1986-08-08 | 1996-10-09 | 東芝セラミツクス株式会社 | Immersion nozzle for continuous casting |
| US5151201A (en) * | 1988-07-01 | 1992-09-29 | Vesuvius Crucible Company | Prevention of erosion and alumina build-up in casting elements |
| US5100035A (en) * | 1989-05-01 | 1992-03-31 | Ferro Corporation | Permeable MgO nozzle |
| JPH07214259A (en) * | 1994-01-25 | 1995-08-15 | Akechi Ceramics Kk | Nozzle for continuous casting of molten steel |
| JP2003040672A (en) * | 2001-05-21 | 2003-02-13 | Shinagawa Refract Co Ltd | Refractory used for fireproof member for continuous steel casting |
-
2002
- 2002-04-30 JP JP2002128337A patent/JP4249940B2/en not_active Expired - Fee Related
-
2003
- 2003-04-30 EP EP03721000A patent/EP1504831B1/en not_active Expired - Lifetime
- 2003-04-30 KR KR1020047017476A patent/KR100835398B1/en not_active IP Right Cessation
- 2003-04-30 CN CNB038096293A patent/CN1305602C/en not_active Expired - Fee Related
- 2003-04-30 US US10/513,186 patent/US20050200057A1/en not_active Abandoned
- 2003-04-30 DE DE60326948T patent/DE60326948D1/en not_active Expired - Lifetime
- 2003-04-30 AU AU2003235985A patent/AU2003235985A1/en not_active Abandoned
- 2003-04-30 BR BRPI0309646-7A patent/BR0309646B1/en not_active IP Right Cessation
- 2003-04-30 WO PCT/JP2003/005558 patent/WO2003092929A1/en active Application Filing
- 2003-04-30 MX MXPA04010796A patent/MXPA04010796A/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0494851A (en) * | 1990-08-09 | 1992-03-26 | Akechi Ceramics Kk | Nozzle for continuous casting |
| JPH04158963A (en) * | 1990-10-19 | 1992-06-02 | Nippon Steel Corp | Nozzle for continuous casting |
| JPH0532456A (en) * | 1991-07-29 | 1993-02-09 | Tokyo Yogyo Co Ltd | Refractory material |
| JPH05154627A (en) * | 1991-08-19 | 1993-06-22 | Shinagawa Refract Co Ltd | Refractory composition for preventing stickness and deposition of non-metallic inclusions |
| JPH05285612A (en) * | 1992-04-13 | 1993-11-02 | Kurosaki Refract Co Ltd | Nozzle inner hole body for continuous casting |
| JPH0839214A (en) * | 1994-07-30 | 1996-02-13 | Kurosaki Refract Co Ltd | Nozzle for continuous casting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356052A (en) * | 2010-05-07 | 2012-02-15 | 黑崎播磨株式会社 | Refractory, continuous casting nozzle comprising the refractory, process for production of a continuous casting nozzle, and continuous casting method using the continuous casting nozzle |
| CN102356052B (en) * | 2010-05-07 | 2014-03-05 | 黑崎播磨株式会社 | Refractory, continuous casting nozzle comprising refractory, process for production of continuous casting nozzle, and continuous casting method using continuous casting nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| BR0309646A (en) | 2005-03-01 |
| WO2003092929A1 (en) | 2003-11-13 |
| DE60326948D1 (en) | 2009-05-14 |
| BR0309646B1 (en) | 2012-11-27 |
| MXPA04010796A (en) | 2005-07-05 |
| EP1504831A4 (en) | 2005-08-17 |
| AU2003235985A1 (en) | 2003-11-17 |
| JP2003320444A (en) | 2003-11-11 |
| KR100835398B1 (en) | 2008-06-04 |
| US20050200057A1 (en) | 2005-09-15 |
| KR20050006214A (en) | 2005-01-15 |
| EP1504831A1 (en) | 2005-02-09 |
| JP4249940B2 (en) | 2009-04-08 |
| CN1649684A (en) | 2005-08-03 |
| EP1504831B1 (en) | 2009-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1305602C (en) | Nozzle for continuous casting of aluminum killed steel and continuous casting method | |
| KR100971260B1 (en) | Nozzle for use in continuous casting | |
| US7275584B2 (en) | Immersion nozzle for continuous casting of steel and continuous steel casting method using same | |
| WO2003064079A1 (en) | Immersion nozzle for continuous casting of steel and continuous casting method of steel | |
| CN111940715B (en) | Anti-blocking submerged nozzle | |
| EP2441740A1 (en) | Refractory, continuous casting nozzle comprising the refractory, process for production of continuous casting nozzle, and continuous casting method using the continuous casting nozzle | |
| CN1319676C (en) | Method for continuous casting of molten steel for thin sheet | |
| US5858261A (en) | Continuous casting nozzle for casting molten steel | |
| US6637629B2 (en) | Immersion nozzle | |
| JP2004074242A (en) | Refractory for continuous casting and continuous casting method using this refractory | |
| JPWO2004082868A1 (en) | Continuous casting nozzle | |
| KR101333431B1 (en) | Method for continuously casting steel, and refractory used in continuous casting of steel | |
| EP0856369B1 (en) | Nozzle for continuous casting of steel | |
| JP4456443B2 (en) | Pitch-containing difficult adhesion continuous casting nozzle | |
| JPH07195161A (en) | Method for removing inclusion in continuous casting of steel | |
| US20010040322A1 (en) | Immersion nozzle | |
| EP1101549B1 (en) | Continuous casting nozzle | |
| KR101062953B1 (en) | Immersion nozzle | |
| EP0970768B1 (en) | A continuous casting nozzle for molten steel | |
| EP1097763B1 (en) | Continuous casting nozzle | |
| JP4437101B2 (en) | Immersion nozzle for continuous casting | |
| JP2006068805A (en) | Hardly adhesive continuous casting nozzle containing zirconia | |
| JP2006239756A (en) | Continuous casting nozzle and continuous casting method | |
| JP2004249292A (en) | Immersion nozzle for continuously casting steel | |
| JP2006068799A (en) | Hardly adhesive continuous casting nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20140430 |