EP0187924A1 - Procédé et poche pour balayage à l'aide de gaz des bains de métal en fusion - Google Patents

Procédé et poche pour balayage à l'aide de gaz des bains de métal en fusion Download PDF

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Publication number
EP0187924A1
EP0187924A1 EP85114854A EP85114854A EP0187924A1 EP 0187924 A1 EP0187924 A1 EP 0187924A1 EP 85114854 A EP85114854 A EP 85114854A EP 85114854 A EP85114854 A EP 85114854A EP 0187924 A1 EP0187924 A1 EP 0187924A1
Authority
EP
European Patent Office
Prior art keywords
pan
pouring
gas
purging
sink
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Withdrawn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
EP85114854A
Other languages
German (de)
English (en)
Inventor
K. Heinz Dipl.-Ing. Fh Busch
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.)
Cometus AG
Original Assignee
Cometus 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 Cometus AG filed Critical Cometus AG
Publication of EP0187924A1 publication Critical patent/EP0187924A1/fr
Withdrawn legal-status Critical Current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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/58—Pouring-nozzles with gas injecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D27/00—Stirring devices for molten material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge

Definitions

  • the present invention relates to a method for purging molten metal in a pan, the pouring opening of which can be closed by a slide or stopper, with a gas passed through a purging plug.
  • the gas stream is entrained by the molten metal flowing out of the ladle, surrounds it and thereby bundles the free pouring stream; if, furthermore, the flushing gas is divided into a plurality of partial gas flows and is blown into the pan via inflow channels which concentrically surround a pouring stone serving as a flushing stone; if the purge gas is simultaneously used as a protective gas for the closure system of the pan and if a protective screen is formed from the purge gas by the suction of the pouring jet flowing out of the pan, thereby preventing the access of atmospheric outside air to the pouring jet.
  • the molten metal is intermittently cleaned after it has been rinsed with a filter which is connected to the pouring spout or a subsequent pouring system and can be activated by a closure member.
  • the present invention relates to a pan with a sink for performing the method, which according to the invention is characterized in that the sink is designed as an annular rotating body and forms the pouring opening of the pan.
  • the purging plug is enclosed by a coaxial gas-tight jacket body which, together with the peripheral surface of the purging plug, forms inflow channels for the purging gas; and that the inflow channels are arranged concentrically to the sink on its periphery; if, furthermore, the casing body is formed by a sleeve stone which has guide lamellae on its inner wall which abut the peripheral surface of the sink, an inflow channel being arranged between each two adjacent guide lamellae and if the casing body is also formed by a sheet metal jacket which is formed by spacer elements arranged on its inner wall is distanced from the peripheral surface of the flushing block, an inflow channel being arranged between each two adjacent spacer elements.
  • Such a pan according to the invention enables the rinsing of the molten metal, the protection of the refractory pouring and rinsing system, the protection of the pouring jet from the reverse atmosphere and the enrichment of the pan with a noble gas can now be combined with one another in a simple manner, which significantly reduces the equipment and operational outlay previously required for this.
  • Fig. 1 in the bottom part of a pan 1 is an annular sleeve stone 2 forming a perforated stone set, which encloses a coaxial, serving as a pouring stone for the molten metal designated here 11 with sink 3.
  • the sink 3 is also designed as an annular rotating body, wherein it forms the pouring opening of the pan 1, which is designated 4 and coaxial with it.
  • a pouring funnel 5 with a subsequent coaxial pouring tube 6 for the molten metal 11 is arranged coaxially therewith.
  • a vertically movable, essentially cylindrical stopper 7 serves to close the pouring opening 4 and is in its open position in FIG. 1.
  • the purging gas is fed through a pipeline 8 to an annular distribution channel 9 formed by the purging stone 3, with which a gas stream of annular cross section is formed from the purging gas and is guided coaxially to the pouring opening 4 of the pan 1.
  • the purging gas is blown into the pan 1 via inflow channels 10 which concentrically surround the purging stone 3 and subdivide the purging gas into a plurality of partial gas flows (cf. also FIG. 3).
  • the plug 7 is in its closed position, i.e. here is the outlet of the molten metal 11 through the pouring stone 3, here it is e.g. the ladle pouring stone, closed.
  • the pan pouring stone 3 which is at the same time designed as an annular purging stone, takes over the purging process thanks to the rib-like guide fins 14 arranged on its circumference (cf. at the same time, corrosive gases and non-metallic particles are transported upwards into the slag.
  • the system of the gas inflow channels 10 is designed such that it produces a homogeneous flushing gas stream of annular cross section arranged concentrically around the pouring opening 4.
  • gaseous protective screen 12a bundles the pouring stream 13, thereby largely avoiding the undesirable scattering and spraying of liquid metal particles, which are only indicated in FIG.
  • the purge gas preferably a noble gas, e.g. Argon, or the like via the pouring funnel 5 and the pouring tube 6 into the pan. and thereby partially displaces the atmospheric air inside. This avoids the formation of oxides, which results in better flow properties for the liquid metal. In addition, corrosion of the ceramic casting system by oxide attack is prevented.
  • a noble gas e.g. Argon
  • the purge 3 is enclosed by a coaxial sheet metal jacket 15, which is spaced from the peripheral surface U3 of the purge 3 by web-like spacer elements 16 arranged on its inner wall, an inflow channel 10 for the purge gas being formed between two adjacent spacer elements.
  • the two design variants for the formation of the gas inflow channels 10 shown in FIGS. 3 and 4 have in common that the sink 3 is enclosed by a coaxial gas-tight casing body (2 in FIG. 3 and 15 in FIG. 4), which together with the peripheral surface U3 of the sink 3 forms the inflow channels 10, these channels being arranged concentrically with the sink 3.
  • the sink 3 designed as an annular rotating body simultaneously as a pouring stone for the Me tallschmelze 11 is used, with all parts essential to the process, ie the sink or pouring stone 3 together with its pouring opening 4, the sleeve stone 2 (or the sheet metal jacket 15 in FIG. 4), the stopper 7 together with stopper rod 7a and the pouring funnel 5 together with the pouring tube 6 are arranged coaxially to one another, an optimally uniform purging and protective action is ensured around the pouring jet 13, to which last but not least the inflow channels 10 arranged concentrically to the purging stone 3 also make a significant contribution to the purging and protective gas.
  • filtering can be carried out as required during the casting of the molten metal for its subsequent cleaning.
  • the filter system is followed by a filter system which is arranged in connection with the pouring or subsequent pouring system in such a way that a discontinuous, i.e. intermittent use of the filter during casting is possible.
  • a closure member e.g. a slide or a turret closure to be provided, with which an alternating bypass circuit for the flow path of the melt is made possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP85114854A 1984-11-26 1985-11-22 Procédé et poche pour balayage à l'aide de gaz des bains de métal en fusion Withdrawn EP0187924A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5620/84 1984-11-26
CH562084A CH657075A5 (de) 1984-11-26 1984-11-26 Verfahren zum spuelen von metallschmelzen, mit einem durch einen spuelstein gefuehrten gas, und spuelstein zur ausfuehrung des verfahrens.

Publications (1)

Publication Number Publication Date
EP0187924A1 true EP0187924A1 (fr) 1986-07-23

Family

ID=4296653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114854A Withdrawn EP0187924A1 (fr) 1984-11-26 1985-11-22 Procédé et poche pour balayage à l'aide de gaz des bains de métal en fusion

Country Status (2)

Country Link
EP (1) EP0187924A1 (fr)
CH (1) CH657075A5 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004330A1 (fr) * 1986-12-13 1988-06-16 Burbach & Bender Ohg Brique de rinçage aux gaz pour recipients metallurgiques
EP0304551A1 (fr) * 1987-08-21 1989-03-01 Didier-Werke Ag Brique de barbotage à gaz et son procédé de fabrication
EP0576212A3 (fr) * 1992-06-18 1994-11-23 Foseco Int Purification de métal fondu.
FR2732628A1 (fr) * 1995-04-05 1996-10-11 Seva Installation et procede de fabrication de ruban ou de fibre metallique amorphe par hypertrempe
EP0745445A1 (fr) * 1995-06-01 1996-12-04 MANNESMANN Aktiengesellschaft Canal distributeur pour la coulée continue
EP1329271A1 (fr) * 2002-01-14 2003-07-23 Michael F. Harasym Dispositif pour faciliter l'ouverture d'un récipient de coulée de métal liquide
CN114040823A (zh) * 2019-09-26 2022-02-11 黑崎播磨株式会社 浇口盘上喷嘴结构体及连续铸造方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH341949A (de) * 1955-09-19 1959-10-31 Patentverwertung Ag Verfahren und Vorrichtung zur Herstellung von Gussstücken
DE1758693B1 (de) * 1967-07-26 1971-07-15 Ct Nat De Rech S Metallurg Ass Verfahren und Vorrichtung zum Behandeln fluessigen Metalls in einer Pfanne durch Hindurchblasen von Gas durch das Metallbad
AT321480B (de) * 1971-12-29 1975-04-10 Stoecker & Kunz Gmbh Ausguß für Gießpfannen, insbesondere für Zwischenbehälter bei Stranggußanlagen, zum Vergießen von Stahlschmelzen, vornehmlich aluminiumberuhigten Stahlschmelzen
DE2607070A1 (de) * 1975-02-25 1976-09-02 Voest Ag Verfahren und einrichtung zur behandlung von metallschmelzen waehrend des stranggiessens mit spuelgas
DE2655912A1 (de) * 1976-12-09 1978-06-15 Linde Ag Giessanlage
EP0059805A1 (fr) * 1981-03-11 1982-09-15 Junichi Ato Busette poreuse pour récipient contenant un métal fondu
DE3204389A1 (de) * 1981-02-12 1982-10-21 USS Engineers and Consultants, Inc., 15230 Pittsburgh, Pa. Vorrichtung und verfahren zum abgiessen von metallschmelzen
DE3241923A1 (de) * 1981-11-13 1983-05-26 Daussan et Cie., 57140 Woippy Vorrichtung zur beseitigung der in den fluessigen metallen enthaltenen einschluesse

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH341949A (de) * 1955-09-19 1959-10-31 Patentverwertung Ag Verfahren und Vorrichtung zur Herstellung von Gussstücken
DE1758693B1 (de) * 1967-07-26 1971-07-15 Ct Nat De Rech S Metallurg Ass Verfahren und Vorrichtung zum Behandeln fluessigen Metalls in einer Pfanne durch Hindurchblasen von Gas durch das Metallbad
AT321480B (de) * 1971-12-29 1975-04-10 Stoecker & Kunz Gmbh Ausguß für Gießpfannen, insbesondere für Zwischenbehälter bei Stranggußanlagen, zum Vergießen von Stahlschmelzen, vornehmlich aluminiumberuhigten Stahlschmelzen
DE2607070A1 (de) * 1975-02-25 1976-09-02 Voest Ag Verfahren und einrichtung zur behandlung von metallschmelzen waehrend des stranggiessens mit spuelgas
DE2655912A1 (de) * 1976-12-09 1978-06-15 Linde Ag Giessanlage
DE3204389A1 (de) * 1981-02-12 1982-10-21 USS Engineers and Consultants, Inc., 15230 Pittsburgh, Pa. Vorrichtung und verfahren zum abgiessen von metallschmelzen
EP0059805A1 (fr) * 1981-03-11 1982-09-15 Junichi Ato Busette poreuse pour récipient contenant un métal fondu
DE3241923A1 (de) * 1981-11-13 1983-05-26 Daussan et Cie., 57140 Woippy Vorrichtung zur beseitigung der in den fluessigen metallen enthaltenen einschluesse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TRANSACTIONS ISIJ, Band 23, 1983, Seite B-247; H. ICHIHASHI et al.: "Design and Material of Filter" *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004330A1 (fr) * 1986-12-13 1988-06-16 Burbach & Bender Ohg Brique de rinçage aux gaz pour recipients metallurgiques
EP0273855A1 (fr) * 1986-12-13 1988-07-06 Burbach & Bender oHG ESB Schweissbetrieb Brique de rinçage pour récipients métallurgiques
EP0304551A1 (fr) * 1987-08-21 1989-03-01 Didier-Werke Ag Brique de barbotage à gaz et son procédé de fabrication
EP0576212A3 (fr) * 1992-06-18 1994-11-23 Foseco Int Purification de métal fondu.
GB2267855B (en) * 1992-06-18 1995-09-20 Foseco Int Purifying molten metal
FR2732628A1 (fr) * 1995-04-05 1996-10-11 Seva Installation et procede de fabrication de ruban ou de fibre metallique amorphe par hypertrempe
EP0745445A1 (fr) * 1995-06-01 1996-12-04 MANNESMANN Aktiengesellschaft Canal distributeur pour la coulée continue
EP1329271A1 (fr) * 2002-01-14 2003-07-23 Michael F. Harasym Dispositif pour faciliter l'ouverture d'un récipient de coulée de métal liquide
CN114040823A (zh) * 2019-09-26 2022-02-11 黑崎播磨株式会社 浇口盘上喷嘴结构体及连续铸造方法
EP4035795A4 (fr) * 2019-09-26 2023-02-08 Krosakiharima Corporation Structure de buse de panier de coulée et procédé de coulée en continu

Also Published As

Publication number Publication date
CH657075A5 (de) 1986-08-15

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Inventor name: BUSCH, K. HEINZ, DIPL.-ING. FH