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WO2007039052A1 - Busette de coulee immergee pour metaux liquides, en particulier pour aciers - Google Patents

Busette de coulee immergee pour metaux liquides, en particulier pour aciers Download PDF

Info

Publication number
WO2007039052A1
WO2007039052A1 PCT/EP2006/008913 EP2006008913W WO2007039052A1 WO 2007039052 A1 WO2007039052 A1 WO 2007039052A1 EP 2006008913 W EP2006008913 W EP 2006008913W WO 2007039052 A1 WO2007039052 A1 WO 2007039052A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
mouth
immersion nozzle
opposite
continuous casting
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.)
Ceased
Application number
PCT/EP2006/008913
Other languages
German (de)
English (en)
Inventor
Lothar Parschat
Wolfgang Mossner
Rolf-Peter Heidemann
Norbert Vogl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Priority to CN200680036966.4A priority Critical patent/CN101282803B/zh
Priority to EP06792032A priority patent/EP1951459B1/fr
Priority to DE502006002463T priority patent/DE502006002463D1/de
Publication of WO2007039052A1 publication Critical patent/WO2007039052A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

L'invention concerne une busette de coulée immergée (1) pour des métaux liquides, en particulier des aciers, dans des dispositifs de coulée continue, tels que des machines pour la coulée continue de brames. Cette busette de coulée immergée (1) présente une tige (2) comportant un canal intérieur (3) qui débouche dans un canal transversal (4) et présente deux ouvertures de sortie (4a ; 4b) pour des déviations (6) dans des directions horizontales opposées (7). La busette de coulée immergée (1) selon l'invention provoque moins de turbulences et présente une énergie d'écoulement réduite du fait que, en cas d'utilisation pour de l'acier liquide allié (acier spécial), un canal distributeur (8) présentant une section ovale (9) forme en vis-à-vis de l'embouchure (5) une calotte d'équilibrage (10) alignée sur l'axe (2a) de la tige (2).
PCT/EP2006/008913 2005-10-04 2006-09-13 Busette de coulee immergee pour metaux liquides, en particulier pour aciers Ceased WO2007039052A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200680036966.4A CN101282803B (zh) 2005-10-04 2006-09-13 浸入式浇注装置
EP06792032A EP1951459B1 (fr) 2005-10-04 2006-09-13 Busette de coulee immergee pour metaux liquides, en particulier pour aciers
DE502006002463T DE502006002463D1 (de) 2005-10-04 2006-09-13 Tauchausguss für flüssige metalle, insbesondere für stahlwerkstoffe

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
DE102005047399.7 2005-10-04

Publications (1)

Publication Number Publication Date
WO2007039052A1 true WO2007039052A1 (fr) 2007-04-12

Family

ID=37674085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/008913 Ceased WO2007039052A1 (fr) 2005-10-04 2006-09-13 Busette de coulee immergee pour metaux liquides, en particulier pour aciers

Country Status (5)

Country Link
EP (1) EP1951459B1 (fr)
CN (1) CN101282803B (fr)
AT (1) ATE418408T1 (fr)
DE (2) DE102005047399A1 (fr)
WO (1) WO2007039052A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2446165A1 (de) * 1974-09-27 1976-04-08 Didier Werke Ag Eintauch-ausguss fuer 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
JPH06262302A (ja) * 1993-03-09 1994-09-20 Kawasaki Steel Corp ステンレス鋼の連続鋳造方法
US5370370A (en) * 1993-02-19 1994-12-06 Vesuvius Crucible Company Liner for submerged entry nozzle
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 (fr) * 2000-03-29 2001-10-04 Sms Demag Aktiengesellschaft Procede et dispositif de coulee continue d'aciers calmes a l'aluminium au moyen d'une coquille refroidie par eau

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2446165A1 (de) * 1974-09-27 1976-04-08 Didier Werke Ag Eintauch-ausguss fuer stahlstranggiessanlagen
FR2285946A1 (fr) * 1974-09-27 1976-04-23 Didier Werke Ag Ensemble plongeant de sortie de coulee pour installations de coulee continue d'acier
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
JPH06262302A (ja) * 1993-03-09 1994-09-20 Kawasaki Steel Corp 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 (fr) * 2000-03-29 2001-10-04 Sms Demag Aktiengesellschaft Procede et dispositif de coulee continue d'aciers calmes a l'aluminium au moyen d'une coquille refroidie par eau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GUPTA D ET AL: "A WATER MODEL STUDY OF THE FLOW ASYMMETRY INSIDE A CONTINUOUS SLAB CASTING MOLD", METALLURGICAL AND MATERIALS TRANSACTIONS B: PROCESS METALLURGY & MATERIALS PROCESSING SCIENCE, TMS, WARRENDALE, PA, US, vol. 27B, no. 5, 1 October 1996 (1996-10-01), pages 757 - 764, XP000632262, ISSN: 1073-5623 *

Also Published As

Publication number Publication date
CN101282803B (zh) 2015-04-29
DE102005047399A1 (de) 2007-04-05
ATE418408T1 (de) 2009-01-15
EP1951459B1 (fr) 2008-12-24
EP1951459A1 (fr) 2008-08-06
DE502006002463D1 (de) 2009-02-05
CN101282803A (zh) 2008-10-08

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