WO1996011078A1 - Tauchgiessrohr - Google Patents
Tauchgiessrohr Download PDFInfo
- Publication number
- WO1996011078A1 WO1996011078A1 PCT/DE1995/001266 DE9501266W WO9611078A1 WO 1996011078 A1 WO1996011078 A1 WO 1996011078A1 DE 9501266 W DE9501266 W DE 9501266W WO 9611078 A1 WO9611078 A1 WO 9611078A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pouring tube
- immersion pouring
- mold
- immersion
- tube
- Prior art date
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 dip tube for supplying molten steel in a long and wide sides having continuous casting mold, in particular for casting thin slabs, which is connected at one end to a casting container and at the other end protrudes into the mold to such an extent that during the casting operation the mouth into the mold immersed steel melt immersed.
- Immersion pipes have a round, predominantly circular or elliptical shape when they are connected to the casting tank. This shape can continue up to the mouth area of the immersion pouring tube, but it can also change into another shape, for example a rectangular shape.
- an immersion pouring tube is known whose at least in its section immersed in the melt has an essentially rectangular outer and inner cross section. The longitudinal edges of this immersion pouring tube run parallel to the long sides of the continuous casting mold, so that an optimal space for the flow cross section is used, in particular in the case of rectangular strand cross sections.
- the immersion pouring tube known from this document influences the melt flowing through the immersion pouring tube, in particular the exit pulse of the pouring jet.
- turbulence and eddies occur particularly in the area of the corners in the area of the mold wide side as a result of the flow of the steel.
- wave peaks and valleys occur in the area of the long sides of the immersion pouring tube, with the disadvantageous consequence of an uneven supply of slag in the area of the free mold cross section in the shadow of the immersion pouring tube. This leads to uneven lubrication and a non-uniform heat transfer between the strand shell formed from the liquid steel and the mold wall, which also results in the drawing in of slag and casting powder under the bath surface.
- the invention has set itself the goal of creating an immersed pouring tube which, in a structurally simple construction, dissipates the kinetic energy of the liquid steel in the region between the section of the immersed pouring tube immersed in the melt and the long sides of the mold and can be predetermined for the flow formation of the part in the mold To influence liquid steel in the area of the bath surface.
- the invention achieves this aim by the characterizing features of claim 1.
- the subclaims show advantageous developments.
- the molten steel leaving the immersion pouring tube initially moves in the direction of conveyance of the strand.
- the melt moves away from the mouth of the immersion pouring tube to a point at which the direction of flow of the liquid steel reverses and then, divided into two separate streams, near the broad sides the molds flow against the strand withdrawal direction to the bath surface
- the two separate streams of the liquid steel move in the direction of the immersion pouring tube, they are deflected on the outer walls of the immersing pouring tube, which are inclined towards the broad sides, and are guided into the space between the long side of the mold and the longitudinal side of the immersing pouring tube .
- the immersion pouring tube according to the invention has, regardless of the configuration of the inner tube wall, a tube outer wall shape which, at any immersion depth of the immersion pouring tube in the continuous casting mold, has an almost constant distance from the longitudinal sides of the mold. Shaped elements are provided on the broad sides of the immersion pouring tube in the area immersed in the melt, which provide minimal resistance to the horizontal flow of the melt located in the mold and the casting powder floating on it.
- the outer wall of the area of the immersion pouring tube which is immersed in the melt is either directly designed in such a way that a minimal flow resistance to the horizontally flowing melt is achieved, or independent components are provided which are arranged in front of the broadside of the immersion pouring tube.
- the immersion pouring tube inner wall as well as the immersion pouring tube outer wall are given shapes which each allow optimal flow conditions both in the immersion pouring tube and around the immersion pouring tube. Wall thickness changes will occur with one-piece immersion pipes.
- immersion pouring tubes are used which have a uniform wall thickness, which essentially depends on the shape of the inner tube wall.
- the broad side of the inner tube wall of the immersion pouring tube with a conical widening, preferably with an inclination angle of 4 ° to 7 °.
- the flow in the area of the casting mirror is influenced in such a way that it flows smoothly in a special way.
- the special configuration of the broadside outer contour of the immersion pouring tube can then have an optimal influence on the flow in the space between the longitudinal sides of the immersion tube and the long sides of the mold.
- the show 1 shows a section through two designs of the mold and the immersion pouring tube horizontally and vertically with a view of broad sides
- Fig. 2 and Fig. 3 longitudinal sections and muzzle cross-sections of different configurations.
- an immersion pouring tube 10 is shown, the inner tube wall of which is 11 and the outer tube wall of which is 12, the area on the casting container side is designated by 13 and the mouth area is designated by 14.
- the region 13 of the casting container is tubular and is connected to a casting container, not shown.
- the mouth region has an essentially flattened shape, the region 16 of which the width of the mold is significantly shorter than that of the region 17 of the long side of the mold.
- FIG. 1 shows a section through a mold 20, the mold long sides 21 and
- the immersion pouring tube 10 is arranged in the center of the mold 20. In the right part of the upper illustration in FIG. 1, the immersion pouring tube 10 has a rectangular shape
- a shaped element 31 designed as a wedge 32 is arranged in front of the mold-wide area 16. The long sides of the mold run essentially parallel.
- the distance of the tube outer wall 12 to the inner mold long side 21 having the maximum mold width B is designated by d.
- the left side of the immersion pouring tube 10 of the horizontal section in FIG. 1 is designed like a boat body 35.
- the immersion pouring tube 10 has a wedge-shaped center
- the current is sketched in the left part.
- the liquid material rises in the area of the mold broadside to the bath surface, shown here by arrowheads. From there, the current moves in the direction of the immersion pouring tube, divided evenly by the tip of the broad hull side of the immersion pouring tube. In the middle of the long side of the immersion pouring tube (represented by the arrow ends), the liquid steel flow moves in the direction of the strand withdrawal.
- the lower area of FIG. 1 shows vertical sections through the mold and the dip tube, specifically the section CC through a cambered mold and EE through a mold with parallel side walls.
- the outer tube wall 12 is designed such that it has a constant distance d from the inner wall of the long side 21 of the mold when the depth of immersion into the mold or the melt is different.
- Figures 2 and 3 have a section through an immersion pouring tube 10 which has a conical extension 15 on the mouth side, in which a wedge-shaped base piece 18 is provided in the center.
- the angle of inclination is 4 ° to 20 °.
- the outer tube wall 12 of the immersion pouring tube in the area immersed in the melt is configured on the side of the immersion tube in such a way that the horizontal flow of the molten steel and the pouring powder floating on it are opposed to a minimal resistance.
- the outer tube wall 12 is formed in the shape of a boat body 35, ending in a tip, and on the right-hand side a Taylor bead 34, which is also known from shipping, is provided. Both form elements can be designed even with a constant wall thickness of the dip tube (dashed line).
- FIG. 3 shows an immersion pouring tube 10, in which the shaped elements 31 are designed as independent components which are fastened to the immersion pouring tube by holding devices 37 as on the left side or by a retaining web 38 as on the right side.
- the immersion pouring tube 10 has a constant wall thickness.
- the shaped elements 31 designed as independent components can have any cross-sectional shapes, a semicircular outer contour 31 is shown in the left part and the shape of a wedge 32 in the right part.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95930397A EP0784523B1 (de) | 1994-10-07 | 1995-09-07 | Tauchgiessrohr |
US08/817,320 US5775552A (en) | 1994-10-07 | 1995-09-07 | Pouring spout |
DE59508571T DE59508571D1 (de) | 1994-10-07 | 1995-09-07 | Tauchgiessrohr |
JP51224396A JP3188473B2 (ja) | 1994-10-07 | 1995-09-07 | 浸漬管 |
AT95930397T ATE194531T1 (de) | 1994-10-07 | 1995-09-07 | Tauchgiessrohr |
BR9509232A BR9509232A (pt) | 1994-10-07 | 1995-09-07 | Tubo de fundição por imersão |
AU33796/95A AU3379695A (en) | 1994-10-07 | 1995-09-07 | Immersed pouring spout |
RU97107331A RU2127171C1 (ru) | 1994-10-07 | 1995-09-07 | Погружная литейная труба |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4436990A DE4436990C1 (de) | 1994-10-07 | 1994-10-07 | Tauchgießrohr |
DEP4436990.5 | 1994-10-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996011078A1 true WO1996011078A1 (de) | 1996-04-18 |
Family
ID=6530933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/001266 WO1996011078A1 (de) | 1994-10-07 | 1995-09-07 | Tauchgiessrohr |
Country Status (11)
Country | Link |
---|---|
US (1) | US5775552A (de) |
EP (1) | EP0784523B1 (de) |
JP (1) | JP3188473B2 (de) |
KR (1) | KR100364687B1 (de) |
CN (1) | CN1068261C (de) |
AT (1) | ATE194531T1 (de) |
AU (1) | AU3379695A (de) |
BR (1) | BR9509232A (de) |
DE (2) | DE4436990C1 (de) |
RU (1) | RU2127171C1 (de) |
WO (1) | WO1996011078A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1284035B1 (it) * | 1996-06-19 | 1998-05-08 | Giovanni Arvedi | Tuffante per la colata continua di bramme sottili |
US6125916A (en) * | 1996-11-12 | 2000-10-03 | Giovanni Arvedi | Apparatus for the high-speed continuous casting of good quality thin steel slabs |
IT1287156B1 (it) * | 1996-11-12 | 1998-08-04 | Giovanni Arvedi | Insieme perfezionato di apparecchiature per la colata continua a velocita' elevata di bramme d'acciaio sottili di buona qualita' |
IT1290931B1 (it) * | 1997-02-14 | 1998-12-14 | Acciai Speciali Terni Spa | Alimentatore di metallo fuso per lingottiera di macchine di colata continua. |
DE10009073A1 (de) * | 1999-11-10 | 2001-05-17 | Sms Demag Ag | Kokille zum Stranggießen von Metall mit einem gekühlte Breitseitenwände und Schmalseitenwände aufweisenden, trichterförmig verjüngten Eingießbereich |
DE10113026C2 (de) * | 2001-03-17 | 2003-03-27 | Thyssenkrupp Stahl Ag | Tauchrohr für das Vergießen von Metallschmelze, insbesondere von Stahlschmelze |
BRPI0408340A (pt) * | 2003-03-17 | 2006-03-21 | Vesuvius Crucible Co | tubo da vazamento, e, método para lingotar uma corrente de metal em fusão |
DE102009012985A1 (de) * | 2009-03-12 | 2010-09-23 | Salzgitter Flachstahl Gmbh | Gießdüse für eine horizontale Bandgießanlage |
JP7169300B2 (ja) * | 2017-05-15 | 2022-11-10 | ベスビウス ユーエスエー コーポレイション | 非対称スラブノズル及びそれを含む金属を鋳造するための冶金用アセンブリ |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1959097B1 (de) * | 1969-11-20 | 1970-11-26 | Mannesmann Ag | Vorrichtung beim Stranggiessen zum Verteilen einer Stahlschmelze |
WO1989012519A1 (en) * | 1988-06-16 | 1989-12-28 | Davy (Distington) Limited | Refractory feed tube |
EP0482423A1 (de) * | 1990-10-15 | 1992-04-29 | Sms Schloemann-Siemag Aktiengesellschaft | Tauchgiessrohr zum Einleiten von Stahlschmelze in eine Stranggiesskokille |
DE4142447A1 (de) * | 1991-06-21 | 1992-12-24 | Mannesmann Ag | Tauchgiessrohr - duennbramme |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2442187A1 (de) * | 1974-09-02 | 1976-03-11 | Mannesmann Ag | Tauchausguss zur verwendung in stranggiessanlagen |
AT400935B (de) * | 1994-07-25 | 1996-04-25 | Voest Alpine Ind Anlagen | Tauchgiessrohr |
-
1994
- 1994-10-07 DE DE4436990A patent/DE4436990C1/de not_active Expired - Fee Related
-
1995
- 1995-09-07 WO PCT/DE1995/001266 patent/WO1996011078A1/de active IP Right Grant
- 1995-09-07 EP EP95930397A patent/EP0784523B1/de not_active Expired - Lifetime
- 1995-09-07 RU RU97107331A patent/RU2127171C1/ru not_active IP Right Cessation
- 1995-09-07 KR KR1019970701985A patent/KR100364687B1/ko not_active IP Right Cessation
- 1995-09-07 US US08/817,320 patent/US5775552A/en not_active Expired - Fee Related
- 1995-09-07 DE DE59508571T patent/DE59508571D1/de not_active Expired - Fee Related
- 1995-09-07 BR BR9509232A patent/BR9509232A/pt not_active IP Right Cessation
- 1995-09-07 CN CN95195539A patent/CN1068261C/zh not_active Expired - Fee Related
- 1995-09-07 AT AT95930397T patent/ATE194531T1/de not_active IP Right Cessation
- 1995-09-07 JP JP51224396A patent/JP3188473B2/ja not_active Expired - Fee Related
- 1995-09-07 AU AU33796/95A patent/AU3379695A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1959097B1 (de) * | 1969-11-20 | 1970-11-26 | Mannesmann Ag | Vorrichtung beim Stranggiessen zum Verteilen einer Stahlschmelze |
WO1989012519A1 (en) * | 1988-06-16 | 1989-12-28 | Davy (Distington) Limited | Refractory feed tube |
EP0482423A1 (de) * | 1990-10-15 | 1992-04-29 | Sms Schloemann-Siemag Aktiengesellschaft | Tauchgiessrohr zum Einleiten von Stahlschmelze in eine Stranggiesskokille |
DE4142447A1 (de) * | 1991-06-21 | 1992-12-24 | Mannesmann Ag | Tauchgiessrohr - duennbramme |
Also Published As
Publication number | Publication date |
---|---|
KR100364687B1 (ko) | 2003-02-05 |
CN1068261C (zh) | 2001-07-11 |
JP3188473B2 (ja) | 2001-07-16 |
ATE194531T1 (de) | 2000-07-15 |
BR9509232A (pt) | 1998-01-27 |
EP0784523A1 (de) | 1997-07-23 |
DE59508571D1 (de) | 2000-08-17 |
JPH10506847A (ja) | 1998-07-07 |
EP0784523B1 (de) | 2000-07-12 |
AU3379695A (en) | 1996-05-02 |
RU2127171C1 (ru) | 1999-03-10 |
CN1160369A (zh) | 1997-09-24 |
US5775552A (en) | 1998-07-07 |
DE4436990C1 (de) | 1995-12-07 |
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