EP1951459A1 - Tauchausguss für flüssige metalle, insbesondere für stahlwerkstoffe - Google Patents
Tauchausguss für flüssige metalle, insbesondere für stahlwerkstoffeInfo
- Publication number
- EP1951459A1 EP1951459A1 EP06792032A EP06792032A EP1951459A1 EP 1951459 A1 EP1951459 A1 EP 1951459A1 EP 06792032 A EP06792032 A EP 06792032A EP 06792032 A EP06792032 A EP 06792032A EP 1951459 A1 EP1951459 A1 EP 1951459A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- mouth
- immersion nozzle
- channel
- inner channel
- 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.)
- Granted
Links
Classifications
-
- 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
Definitions
- the invention relates to a submersible nozzle for liquid metals, in particular steel materials, in continuous casting, such as slab continuous casting machines, which dips into the casting mold and the melt passes from an upstream distribution vessel under exclusion of air under the casting of the continuous casting mold, with a shaft whose uniform Inner channel opens into a running approximately perpendicular to the shaft axis transverse channel with two lateral outlet openings and opposite to the mouth forms a deflection in opposite, substantially horizontal directions.
- Such a diving nozzle is known (DE 37 09 188, JP 6262302, JP 8057584, JP 200 40 98 127, US 5,370,370).
- the disadvantage is associated that at high flow velocity and turbulence during the primary solidification of the melt, a turbulent G funnelspiegel occurs in the continuous casting mold, which leads to irregular training of pour marks on the cooled cast strand. This results in an increased number of surface defects and the result is an increased amount of grinding work.
- the object of the invention is to equalize the flow velocity at the time of primary solidification of the melt and to reduce the turbulence at the point of primary solidification to such an extent that surface defects are reduced or completely eliminated.
- the object is achieved according to the invention that when used PHg for liquid, alloyed steel (so-called. Stainless steel), the mouth of a horizontally extending distribution channel with an oval cross section and that opposite to the mouth of the oval cross section forms an aligned to the shaft axis Symmetri ceremoniess-calotte whose symmetrical bottom curvature merges in each case outward in a straight, upward course at angles between 45 ° to 30 ° to the horizontal.
- the advantage is a partial destruction of flow energy of the melt already in the immersion nozzle. As a result, less turbulence is generated in the melt, which results in a calmer casting level. The positive result is less surface defects and therefore less sanding.
- the compliance and / or selection (adjustment) of the angle can significantly contribute to the exact half division of the melt stream.
- oval cross section is formed from two vertically spaced semicircles with connecting tangents.
- the manufacturability is thereby simplified, although an elliptical design is also to be taken into consideration.
- the concrete means may be designed as guide ribs or as guide channels.
- FIG. 1 shows an axial section through a submersible nozzle for stainless steel
- Fig. 2 shows a side view against the lateral outlet opening
- Fig. 3 shows a section through the transverse channel in an enlarged scale.
- the immersion nozzle 1 (FIG. 1) is intended for liquid metals, in particular for alloyed steel materials, so-called stainless steels, in continuous casting devices, such as slab continuous casting machines.
- the immersion nozzle 1 immersed in the continuous casting mold to below the regulated casting level and forms between a continuous casting mold upstream distribution vessel and the continuous casting mold a melt introduction under exclusion of air.
- the immersion nozzle 1 has a shaft 2, the uniform inner channel 3 opens into an approximately perpendicular to the shaft axis 2a extending transverse channel 4.
- For the melt at least two lateral outlet openings 4a and 4b are provided in the transverse channel 4, so that opposite to the mouth 5, a deflection 6 is formed in opposite horizontal directions 7.
- the mouth 5 is placed on a horizontally extending distribution channel 8 with an oval cross-section 9 for the use of the immersion nozzle 1.
- the oval cross-section 9 forms a symmetry dome 10 aligned with the shaft axis 2a, the symmetrical bottom curvature 11 of which transitions to the outside in a straight, upward course 12 at angles ⁇ between 45 ° and 30 ° to the horizontal.
- the oval cross-section 9 ( Figure 2) is formed of two perpendicularly spaced semicircles 13 bounded laterally by connecting rods 13a.
- the shank 2 can be designed in its cross section on the inner channel 3 inside and / or outside cylindrical round or oval. In this case, an elliptical cross section is also to be considered.
- the mouth 5 is drawn larger to further illustrate the flow characteristics.
- the bottom curvature 11 is set exactly symmetrical to the shaft axis 2a.
- the bottom curvature 11 causes an absolutely same distribution channel 8 to the left and right.
- there is a deflection 6 on both sides of the melt flow which is made possible by the formation of the shaft 2 with turbulence-free flow.
- This effect essentially exerts the balancing dome 10, wherein the bottom curvature 11 consumes an existing further part of flow energy by a following straight course 12 at the angles ⁇ , so that the melt flow is released into the continuous casting mold without turbulence.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Continuous Casting (AREA)
- Extraction Or Liquid Replacement (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005047399A DE102005047399A1 (de) | 2005-10-04 | 2005-10-04 | Tauchausguss für flüssige Metalle, insbesondere für Stahlwerkstoffe |
| PCT/EP2006/008913 WO2007039052A1 (de) | 2005-10-04 | 2006-09-13 | Tauchausguss für flüssige metalle, insbesondere für stahlwerkstoffe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1951459A1 true EP1951459A1 (de) | 2008-08-06 |
| EP1951459B1 EP1951459B1 (de) | 2008-12-24 |
Family
ID=37674085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06792032A Active EP1951459B1 (de) | 2005-10-04 | 2006-09-13 | Tauchausguss für flüssige metalle, insbesondere für stahlwerkstoffe |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1951459B1 (de) |
| CN (1) | CN101282803B (de) |
| AT (1) | ATE418408T1 (de) |
| DE (2) | DE102005047399A1 (de) |
| WO (1) | WO2007039052A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2446165B2 (de) * | 1974-09-27 | 1977-03-10 | Didier-Werke Ag, 6200 Wiesbaden | Feuerfeste huelse fuer einen tauchausguss bei stahlstranggiessanlagen |
| JPS6352756A (ja) * | 1986-08-21 | 1988-03-05 | Nippon Steel Corp | 連続鋳造用浸漬ノズル |
| JPH05200507A (ja) * | 1992-01-28 | 1993-08-10 | Nisshin Steel Co Ltd | 連続鋳造用ロングノズル |
| US5370370A (en) * | 1993-02-19 | 1994-12-06 | Vesuvius Crucible Company | Liner for submerged entry nozzle |
| JP2868174B2 (ja) * | 1993-03-09 | 1999-03-10 | 川崎製鉄株式会社 | ステンレス鋼の連続鋳造方法 |
| JP2000280050A (ja) * | 1999-03-30 | 2000-10-10 | Furukawa Electric Co Ltd:The | 竪型連続鋳造用注湯ノズルおよび前記注湯ノズルを用いた竪型連続鋳造方法 |
| WO2001072454A1 (de) * | 2000-03-29 | 2001-10-04 | Sms Demag Aktiengesellschaft | VERFAHREN UND VORRICHTUNG ZUM STRANGGIESSEN VON Al-BERUHIGTEN STÄHLEN MIT EINER WASSERGEKÜHLTEN KOKILLE |
-
2005
- 2005-10-04 DE DE102005047399A patent/DE102005047399A1/de not_active Withdrawn
-
2006
- 2006-09-13 DE DE502006002463T patent/DE502006002463D1/de active Active
- 2006-09-13 EP EP06792032A patent/EP1951459B1/de active Active
- 2006-09-13 AT AT06792032T patent/ATE418408T1/de active
- 2006-09-13 CN CN200680036966.4A patent/CN101282803B/zh active Active
- 2006-09-13 WO PCT/EP2006/008913 patent/WO2007039052A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007039052A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE418408T1 (de) | 2009-01-15 |
| DE502006002463D1 (de) | 2009-02-05 |
| CN101282803A (zh) | 2008-10-08 |
| CN101282803B (zh) | 2015-04-29 |
| WO2007039052A1 (de) | 2007-04-12 |
| DE102005047399A1 (de) | 2007-04-05 |
| EP1951459B1 (de) | 2008-12-24 |
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