EP2429743A1 - Procédé pour faire fonctionner une busette de coulée de fond de cuve destinée à être utilisée dans une cuve pour métaux en fusion - Google Patents

Procédé pour faire fonctionner une busette de coulée de fond de cuve destinée à être utilisée dans une cuve pour métaux en fusion

Info

Publication number
EP2429743A1
EP2429743A1 EP10719993A EP10719993A EP2429743A1 EP 2429743 A1 EP2429743 A1 EP 2429743A1 EP 10719993 A EP10719993 A EP 10719993A EP 10719993 A EP10719993 A EP 10719993A EP 2429743 A1 EP2429743 A1 EP 2429743A1
Authority
EP
European Patent Office
Prior art keywords
mbar
pressure
spout
floor
wall
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.)
Withdrawn
Application number
EP10719993A
Other languages
German (de)
English (en)
Inventor
Francis Dams
Martin Kendall
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.)
RHI AG
Original Assignee
Heraeus Electro Nite International NV
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 Heraeus Electro Nite International NV filed Critical Heraeus Electro Nite International NV
Publication of EP2429743A1 publication Critical patent/EP2429743A1/fr
Withdrawn legal-status Critical Current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
    • B22D41/502—Connection arrangements; Sealing means therefor
    • 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 floor spout for use in a container for molten metal, with an inner wall surrounding a flow opening for molten metal and an outer housing.
  • the invention further relates to a method for operating the floor spout and a casting device for molten metal.
  • Such a floor spout is well known in the art.
  • KR 2003-0054769 the construction and operation of such a floor spout are described.
  • the pressure within the material of the floor spout should be slightly lowered.
  • Such reductions in pressure of minus 1000 to minus 1300 mm H 2 O are in fact also found in the usual floor spouts of pouring equipment in the steel industry. They correspond to an absolute pressure of about 885 to 915 mbar.
  • a pressure of at most 500 mbar is preferably at most 400 mbar, in particular at most 300 mbar.
  • the pressure is 100 to 400 mbar, in particular 250 to 300 mbar.
  • gas access to the flow opening of the floor spout is prevented so effectively that virtually no material adheres to the wall of the flow opening during flow.
  • the casting speed is not reduced, turbulence in the melt is reduced.
  • the required negative pressure can preferably be generated with conventional pumps.
  • a casting device with a container for molten metal is further equipped with a bottom nozzle arranged in a wall, in particular in the bottom, of the container.
  • the bottom spout can be equipped with an upper and a lower nozzle.
  • the upper nozzle may be disposed directly in the wall of a casting apparatus while the lower nozzle is disposed below.
  • a slide valve known in principle can be arranged, with the aid of which the flow opening can be opened or closed to regulate the flow of molten metal.
  • a slide valve and a stopper rod can be used in a known manner.
  • Under the operation of the floor spout its operating state is understood, that is, the state that exists during the flow of the molten metal.
  • the floor outlet is preferably used for molten steel.
  • Figure 1 shows a detail of a pouring device with an inventive
  • FIG. 1 shows a detail of a conventional pouring device with floor spout.
  • the pouring device 1 shown in Figure 1 for example, a distributor for molten steel, in the bottom of a bottom spout 2 is arranged.
  • the floor spout 2 is inserted with its upper part 3 in a perforated brick 4, which is arranged in the lining 5 of the distributor.
  • a so-called slide valve 6 is arranged, with which the flow opening 7 of the bottom spout 2 can be closed or opened.
  • the slide valve 6 can be configured in a known manner. It is provided with a push rod 8 which controls the closure and which is sealed by the outer housing 9 of the floor spout 2 passed.
  • the outer housing 9 surrounds the slide valve 8 and is located at its lower part close to the lower part 10 of the floor spout 2.
  • the housing 9 extends around the upper part 3 of the floor spout 2, lies close to the outside and is surrounded on the outside by the perforated brick 4. Below the spool valve 6, the lower part 10 of the bottom spout 2 is arranged. This protrudes into a mold 11. To a controllable pump valve 12, a vacuum pump is connected, with which the pressure between the outer housing 9 and the flow opening 7 bounding inner wall 13 is lowered to a value of about 250 mbar. The pressure is measured in the pumping section.
  • FIG. 2 shows a pouring device without significant pressure reduction, which is generally similar to the arrangement shown in FIG. 1, but in which there are no pressure-reducing measures, in particular no housing and no vacuum pump. This system is operated at atmospheric pressure, ie at a pressure of about 1000 mbar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

L'invention concerne une busette de coulée de fond de cuve destinée à être utilisée dans une cuve pour métaux en fusion. La busette de coulée selon l'invention comprend une paroi interne entourant un orifice d'écoulement pour métaux en fusion, ainsi qu'une enveloppe externe. Selon l'invention, une pression de 500 millibars au plus règne entre la paroi interne et l'enveloppe externe lors de l'utilisation de la busette de coulée de fond de cuve.
EP10719993A 2009-05-12 2010-04-21 Procédé pour faire fonctionner une busette de coulée de fond de cuve destinée à être utilisée dans une cuve pour métaux en fusion Withdrawn EP2429743A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009020990A DE102009020990A1 (de) 2009-05-12 2009-05-12 Bodenausguss zum Einsatz in einen Behälter für Metallschmelzen
PCT/EP2010/002443 WO2010130330A1 (fr) 2009-05-12 2010-04-21 Procédé pour faire fonctionner une busette de coulée de fond de cuve destinée à être utilisée dans une cuve pour métaux en fusion

Publications (1)

Publication Number Publication Date
EP2429743A1 true EP2429743A1 (fr) 2012-03-21

Family

ID=42556918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10719993A Withdrawn EP2429743A1 (fr) 2009-05-12 2010-04-21 Procédé pour faire fonctionner une busette de coulée de fond de cuve destinée à être utilisée dans une cuve pour métaux en fusion

Country Status (11)

Country Link
US (1) US20120055958A1 (fr)
EP (1) EP2429743A1 (fr)
JP (1) JP2012526659A (fr)
KR (1) KR20120027323A (fr)
CN (1) CN102421552A (fr)
BR (1) BRPI1013506A2 (fr)
DE (1) DE102009020990A1 (fr)
MX (1) MX2011011987A (fr)
RU (1) RU2011150270A (fr)
WO (1) WO2010130330A1 (fr)
ZA (1) ZA201108253B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010050936A1 (de) * 2010-11-11 2012-05-16 Heraeus Electro-Nite International N.V. Bodenausgussdüse für die Anordnung im Boden eines metallurgischen Gefäßes
CN114619006A (zh) * 2022-02-14 2022-06-14 包头钢铁（集团）有限责任公司 一种换包时管线钢中夹杂物控制方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS613653A (ja) * 1984-06-15 1986-01-09 Kawasaki Steel Corp シ−ル機構を有するスライデイングノズル装置
JPH03281045A (ja) * 1990-03-29 1991-12-11 Kurosaki Refract Co Ltd シール機構を有するスライディングノズル装置
JP2551941Y2 (ja) * 1991-01-11 1997-10-27 住友金属工業株式会社 密閉式スライディングノズル
JPH05138335A (ja) * 1991-07-12 1993-06-01 Shinagawa Refract Co Ltd カートリツジ式スライドバルブ装置におけるシール機構及び／又はガス吹込又は真空吸引機構
JPH05185191A (ja) * 1992-01-10 1993-07-27 Kobe Steel Ltd タンディッシュから鋳型への注湯方法および注湯ノズル構造
JP3484820B2 (ja) * 1995-04-20 2004-01-06 大同特殊鋼株式会社 快削鋼の連続鋳造方法
DE19847271C1 (de) 1998-10-07 2000-05-04 Mannesmann Ag Verfahren zur Erzeugung von Stahl mit einem Kohlenstoffgehalt gleich/kleiner 0,9 Gewichtsprozent und einem Si-Gehalt von 0,15 - 1,0 Gewichtsprozent
KR20030054769A (ko) 2001-12-26 2003-07-02 주식회사 포스코 주편 내의 공기 흡입이 감소되는 연속주조방법
DE102004057381A1 (de) 2004-11-26 2006-06-01 Heraeus Electro-Nite International N.V. Verfahren zur Regelung des Durchflusses sowie Bodenausguss für ein metallurgisches Gefäß

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010130330A1 *

Also Published As

Publication number Publication date
DE102009020990A1 (de) 2010-11-18
US20120055958A1 (en) 2012-03-08
WO2010130330A1 (fr) 2010-11-18
ZA201108253B (en) 2012-07-25
RU2011150270A (ru) 2013-06-20
BRPI1013506A2 (pt) 2016-04-05
CN102421552A (zh) 2012-04-18
JP2012526659A (ja) 2012-11-01
MX2011011987A (es) 2011-12-08
KR20120027323A (ko) 2012-03-21

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