EP0293564B1 - Verfahren zu Einführen von Spülgas in eine einen Schiebeverschluss aufweisende Ausgussöffnung metallurgischer Gefässe - Google Patents

Verfahren zu Einführen von Spülgas in eine einen Schiebeverschluss aufweisende Ausgussöffnung metallurgischer Gefässe Download PDF

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Publication number
EP0293564B1
EP0293564B1 EP88104040A EP88104040A EP0293564B1 EP 0293564 B1 EP0293564 B1 EP 0293564B1 EP 88104040 A EP88104040 A EP 88104040A EP 88104040 A EP88104040 A EP 88104040A EP 0293564 B1 EP0293564 B1 EP 0293564B1
Authority
EP
European Patent Office
Prior art keywords
pressure
gas
flushing gas
line
nozzles
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 - Lifetime
Application number
EP88104040A
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German (de)
English (en)
French (fr)
Other versions
EP0293564A3 (en
EP0293564A2 (de
Inventor
Bruno MÜLLER
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.)
Stopinc AG
Original Assignee
Stopinc 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 Stopinc AG filed Critical Stopinc AG
Priority to AT88104040T priority Critical patent/ATE69186T1/de
Publication of EP0293564A2 publication Critical patent/EP0293564A2/de
Publication of EP0293564A3 publication Critical patent/EP0293564A3/de
Application granted granted Critical
Publication of EP0293564B1 publication Critical patent/EP0293564B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/42—Features relating to gas injection

Definitions

  • the invention relates to a method, in particular for introducing purge gas, into a pouring opening of metallurgical vessels having a sliding closure through nozzles arranged in the closing area of the closure plate via a controlled line originating from a gas source.
  • the object of the present invention is to improve the introduction of purge gas by means of closed closure plates to the effect that the melt can automatically flow out of the pouring opening after each opening of the sliding closure.
  • the object is achieved according to the invention in that when a predetermined flushing gas counterpressure is reached and / or immediately before the closing plate is opened, at least one pressure jet generated by a compressed gas source of at least 12 bar in the pouring opening clears. In this way, the 100 percent self-flow rate that is now required by the foundry companies after opening the sliding closure can be achieved with relatively little effort, thus avoiding expensive termination of the pouring operation.
  • the pressure jet is introduced over a very short adjustable period of time, preferably only over fractions of a second.
  • the procedure is appropriately such that three nozzle jets act symmetrically in the pouring opening and the switching of the pressure waves caused by the nozzle jets takes place with the aid of the flushing gas counterpressure with a consistency of the melt in the pouring opening which tends to solidify.
  • the pressure wave is preferably stored within a pressure train in a volumetrically coordinated pressure vessel, which is in the open There is a line connection to a compressed gas source and a closed line connection to the flushing gas line, the open connection to the compressed gas source being closed at the same time when the pressure wave is switched. This easily creates pressure waves with the same amount of gas, which can also be easily controlled.
  • a further proposal of the invention is that air, argon or a gas-solid mixture is injected into the pouring opening for the flowable preparation of the melt.
  • the additional blowing of the nozzle jet through the porous plug ensures the distribution of the purge gas over the entire cross section of the pouring opening.
  • the nozzles become blocked, they are blown free by introducing a nozzle jet when the closure is open. However, the condition is that the plug comes to lie outside the base plate.
  • 1 means the pouring opening of a metallurgical vessel (not shown in more detail), which begins on the inlet side at the perforated brick 2 and is otherwise formed by the inlet sleeve 3 and the fixed base plate 4.
  • a metallurgical vessel (not shown in more detail), which begins on the inlet side at the perforated brick 2 and is otherwise formed by the inlet sleeve 3 and the fixed base plate 4.
  • On the refractory base plate 4 is a refractory linearly adjustable in the arrow directions 5 Closure plate 6, whose flow opening 7 continues the pouring opening 1 when the closure is open.
  • flushing gas is introduced into the pouring opening 1 through nozzles 8 of a stopper 9 arranged in the closing region of the plate 6, which is made of gas-permeable porous or high-strength refractory material, in order to prevent the melt above the closure plate 6 from freezing.
  • the gas flows to the stopper nozzles 8 from a gas space 10 arranged in the closure plate 6 below the stopper 9, which in turn is connected to a gas channel 11 leading to the plate circumference, the stopper 9 and the gas space 10 being fixed to the gas channel 11 connected sheet metal shell 9 'are surrounded and thereby leakage losses can be largely avoided.
  • the shut-off valve 16 which is designed as a solenoid valve, is controlled by a processor 23, which in turn receives measured values from the pressure switch 20 and position values of the position meter 24 of the slide closure actuation.
  • the gas source 13 and the line 14 and an adjoining connecting line 25 serve to supply a constant gas flow via the gas connection 12 to the plug nozzles 8 in a desired amount of gas, which can be set manually on the throttle valve 17 and by the subsequent mass flow controller 18 to the set value is held at changing back pressure due to different flow conditions in the pouring opening 1.
  • a further gas introduction is provided to ensure self-leakage which by means of bullet-like nozzle jets generated by a pressure wave at the plug nozzles 8 outflow obstacles in the Spout 1 eliminated.
  • a pressure line 30 which starts from a compressed gas source 31 at approximately 200 bar and opens into the double check valve 22.
  • a pressure reducer 32 Arranged in between are a pressure reducer 32, a shut-off valve 33, a pressure vessel 34 and a further shut-off valve 35.
  • Both shut-off valves 33 and 35 which in turn are designed as solenoid valves, receive closing and opening commands from the processor 23.
  • the processor 23 has opened the shut-off valve 16 of the line 14 of the constant gas flow, so that flushing gas flows to the nozzle plug 9 with a gas pressure set on the pressure reducer 15, which, if no other operating modes of higher pressure are of priority, at least the nozzles 8 protects against penetration of the melt.
  • the pressure wave which passes on the way to the nozzles 8, the part of the common double check valve 22 located on the pressure line 35 and the common connection 25, is released from the pressure vessel 34, which has an open connection to the pressure gas source 31 during normal operation and with that on the pressure reducer 32 set pressure of about 15 to 30 bar, while its volume corresponds to a coordinated amount of compressed gas.
  • the shut-off valve 35 behind the pressure vessel 34 opens to release the pressure wave, the otherwise open shut-off valve 33 in front closes and shuts off the connection to the compressed gas source 31.
  • the part of the double check valve 22 belonging to the line 14 closes, but can also remain open if the valve is designed accordingly, so that the pressure wave overlaps the constant gas flow of the line 14.
  • a stopper 9 which has three nozzles 8 formed by bores, which are axially symmetrical with the mouths to the axis of the pouring opening 1, but as shown in FIG.
  • the diameter of the nozzles 8 can be between 2 and 7 mm.
  • a sheet metal casing 9 surrounds the stopper 9 and the gas space 10 underneath.
  • Plugs with 5 non-symmetrically arranged nozzles have also proven successful, the plugs being made of a porous gas-permeable refractory material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Toys (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Continuous Casting (AREA)
EP88104040A 1987-06-05 1988-03-15 Verfahren zu Einführen von Spülgas in eine einen Schiebeverschluss aufweisende Ausgussöffnung metallurgischer Gefässe Expired - Lifetime EP0293564B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88104040T ATE69186T1 (de) 1987-06-05 1988-03-15 Verfahren zu einfuehren von spuelgas in eine einen schiebeverschluss aufweisende ausgussoeffnung metallurgischer gefaesse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3718890 1987-06-05
DE3718890A DE3718890C1 (de) 1987-06-05 1987-06-05 Verfahren zum Einfuehren von Spuelgas in eine einen Schiebeverschluss aufweisende Ausgussoeffnung metallurgischer Gefaesse

Publications (3)

Publication Number Publication Date
EP0293564A2 EP0293564A2 (de) 1988-12-07
EP0293564A3 EP0293564A3 (en) 1989-10-11
EP0293564B1 true EP0293564B1 (de) 1991-11-06

Family

ID=6329148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104040A Expired - Lifetime EP0293564B1 (de) 1987-06-05 1988-03-15 Verfahren zu Einführen von Spülgas in eine einen Schiebeverschluss aufweisende Ausgussöffnung metallurgischer Gefässe

Country Status (11)

Country Link
US (1) US5119976A (zh)
EP (1) EP0293564B1 (zh)
JP (1) JPS63313655A (zh)
KR (1) KR890000187A (zh)
CN (1) CN1008331B (zh)
AT (1) ATE69186T1 (zh)
BR (1) BR8802713A (zh)
DE (1) DE3718890C1 (zh)
ES (1) ES2028156T3 (zh)
IN (1) IN169578B (zh)
ZA (1) ZA883087B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111545740A (zh) * 2020-05-18 2020-08-18 芜湖新兴铸管有限责任公司 钢包水口气封自动控制系统

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9316297D0 (en) * 1993-08-05 1993-09-22 Foseco Int Improvements in molten metal handling vessels
CH689447A5 (de) * 1994-12-16 1999-04-30 Concast Standard Ag Einrichtung zum Zufuehren einer Stahlschmelze in eine Stranggiesskokille.
US6660220B2 (en) 2001-12-21 2003-12-09 Isg Technologies Inc. Apparatus and method for delivering an inert gas to prevent plugging in a slide gate
PL1757386T3 (pl) * 2005-08-27 2009-01-30 Refractory Intellectual Property Gmbh & Co Kg Ogniotrwała rura wylewowa z wkładką porowatą
EP2140833A1 (en) * 2008-07-03 2010-01-06 Curozone USA Inc. Dental treatment apparatus
CN103240410B (zh) * 2013-05-17 2016-04-13 莱芜钢铁集团有限公司 通过分离回收引流砂提高钢水洁净度的滑动水口装置
CN103658629B (zh) * 2013-12-18 2016-05-04 宁夏维尔铸造有限责任公司 钢水吹氩浇注方法
DE112018002077A5 (de) * 2017-04-20 2020-01-02 Ksm Castings Group Gmbh Trennschiebersystem, Gießanlage und Gießverfahren
CN114719605A (zh) * 2020-06-09 2022-07-08 姜春辉 一种用于金属/合金熔炼过程中添加材料的智能喷射装置
CN114719604A (zh) * 2020-06-09 2022-07-08 姜春辉 一种用于金属/合金熔炼过程中添加材料的装置和方法
KR102542306B1 (ko) * 2021-07-21 2023-06-13 주식회사 에이텍에이피 매체 이송을 위한 샤프트 구조

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US3253307A (en) * 1964-03-19 1966-05-31 United States Steel Corp Method and apparatus for regulating molten metal teeming rates
US3502134A (en) * 1967-07-19 1970-03-24 United States Steel Corp Continuous casting method with inert gas puffs to prevent skulling
DE2012691B2 (de) * 1969-03-24 1977-08-04 The Steel Company of Canada Ltd, Hamilton, Ontario (Kanada) Anwendung eines verfahrens zum vergiessen von eisenmetallen auf das vergiessen aluminiumberuhigter staehle
US3581948A (en) * 1969-08-11 1971-06-01 Interstop Ag Sliding gate of a casting ladle for pouring liquid metals
AU2485271A (en) * 1970-06-23 1972-08-03 Japan Special Steel Co., Ltd A method for opening a nozzle hole ina sliding nozzle assembly fora molten metal ladle anda sliding assembly having nozzle hole opening means
US3809146A (en) * 1972-02-18 1974-05-07 Steel Corp Method of opening an intermediate vessel nozzle for continuous casting
GB1379236A (en) * 1972-07-27 1975-01-02 Singer A R E Nozzles for molten metals
GB1494477A (en) * 1973-11-16 1977-12-07 Stopinc Ag Slide gate nozzle
GB1492533A (en) * 1973-11-23 1977-11-23 Flogates Ltd Pouring of metals
DE2731113A1 (de) * 1977-07-09 1979-01-18 Didier Werke Ag Ausgussformstein und verfahren zu seiner herstellung
DE2836409C2 (de) * 1978-08-19 1982-07-22 Stopinc AG, Zug Vorrichtung zum Einführen von Behandlungsstoffen in die in einem metallurgischen Gefäß enthaltene Schmelze
GB8412101D0 (en) * 1984-05-11 1984-06-20 Flogates Ltd Metal teeming apparatus
IT1176428B (it) * 1984-07-18 1987-08-18 Radex Italiana Spa Manicotto di uscita in un dispositivo per controllare l'efflusso di acciaio fuso da una siviera o da una paniera
DE3506426C1 (de) * 1985-02-23 1985-11-28 Stopinc Ag, Baar Verfahren zum Abgiessen von Metallschmelze aus einem ein Absperrorgan aufweisenden Behaelter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111545740A (zh) * 2020-05-18 2020-08-18 芜湖新兴铸管有限责任公司 钢包水口气封自动控制系统

Also Published As

Publication number Publication date
EP0293564A3 (en) 1989-10-11
DE3718890C1 (de) 1988-03-31
ZA883087B (en) 1988-12-28
CN1008331B (zh) 1990-06-13
CN1030037A (zh) 1989-01-04
BR8802713A (pt) 1988-12-27
JPH0317588B2 (zh) 1991-03-08
IN169578B (zh) 1991-11-16
ES2028156T3 (es) 1992-07-01
ATE69186T1 (de) 1991-11-15
US5119976A (en) 1992-06-09
KR890000187A (ko) 1989-03-13
JPS63313655A (ja) 1988-12-21
EP0293564A2 (de) 1988-12-07

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