US3887171A - Apparatus for purifying in continuous casting silicon- and/or aluminium-killed steel - Google Patents

Apparatus for purifying in continuous casting silicon- and/or aluminium-killed steel Download PDF

Info

Publication number
US3887171A
US3887171A US419708A US41970873A US3887171A US 3887171 A US3887171 A US 3887171A US 419708 A US419708 A US 419708A US 41970873 A US41970873 A US 41970873A US 3887171 A US3887171 A US 3887171A
Authority
US
United States
Prior art keywords
tundish
purifying
trough
continuous casting
steel
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
US419708A
Other languages
English (en)
Inventor
Herbert Neuhaus
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.)
Kloeckner Werke AG
Original Assignee
Kloeckner Werke 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 Kloeckner Werke AG filed Critical Kloeckner Werke AG
Application granted granted Critical
Publication of US3887171A publication Critical patent/US3887171A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B22D11/11—Treating the molten metal
    • B22D11/116—Refining the metal
    • B22D11/118—Refining the metal by circulating the metal under, over or around weirs
    • 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
    • B22D41/003—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with impact pads

Definitions

  • ABSTRACT An apparatus for purifying siliconand/or aluminiumkilled steel in a continuous casting process utilizing a tundish disposed between the casting ladle and the continuous casting machine. a tube extends from the casting ladle into the tundish and terminates shortly above the bottom of the latter. A trough on the bottom of the tundish forms conjoint1y with the tube a guide for the steel directing same into soft contact with the purifying slag upon the steel bath.
  • the present invention relates to an apparatus for purifying in continuous casting siliconand/or aluminiumkilled steel, utilizing a tundish, which apparatus is arranged between the casting ladle and the continuous casting machine, wherein a tube is provided. which tube extends from the casting ladle into the tundish and terminates shortly above the bottom of the latter.
  • inclusions consisting of silicates or alumina occur in the quenching zone of the preliminary slabs or steel billets.
  • the latter have to be removed by scarfing or grinding, whereby losses of between 4% and 5% are considered tolerable
  • These inclusions are caused by deoxidation products which have not separated off during deoxidation with silicon and/or aluminium and also, however secondary, by inclusions which are produced during the casting process as a result of the steel coming into contact with the air. Conditions can be considerably improved by casting through a casting tube arranged under the casting ladle. This casting process, however, is not satisfactory for a high quality preliminary slab which allows no scarfing losses.
  • An apparatus is known providing a refractory tube inside the tundish, which extends nearly from the cover of the tundish into the trough arranged thereunder.
  • the tube and the trough effect the guidance of the steel.
  • the inner part of the tube there is a slag which has a purifying effect on the steel, flowing through the slag during continuous casting.
  • the steel stream travels through a pass of more than one meter between the casting ladle and tundish, coming into direct contact with the air; thus further oxidation impurities may occur. These impurities, too, must be removed. Thus it is more favourable to prevent, during casting, the formation of further impurities on account of the oxidation by air so that the steel has a lower content of inclusions.
  • the object of the invention is to provide an apparatus which does not suffer from the disadvantages mentioned above but which is constructed in such a way that a better purification of steel can be effected than has been possible up to now.
  • a slag having a composition which absorbs in particular alumina or silicates.
  • the outside diameter of the tube and the inside diameter of the trough are so dimensioned that the free flowsection between them is so much narrower that a higher flow-velocity is achieved in said section than the flow-velocity existing in one or more immersion tubes connected with the tundish.
  • the trough in the tundish extend into the slag, covering the steelbath in the tundish.
  • a refractory ring constructed like the trough, for the guidance of the steel.
  • a set of barriers is provided on the bottom of the tundish.
  • FIG. 1 shows a longitudinal section through the tundish and FIG. 2 shows a section along the line ll-ll of FIG. 1.
  • the tundish 2 having a trough 4 in its bottom 3, is arranged between the casting ladle l and the continuous casting machine, both not being shown in detail.
  • the tube 6 extends through the cover 5 of the tundish 2 into the interior of the tundish in such a way that the tube 6 forms a guidance together with the trough 4.
  • a set of barriers 7 is arranged on the bottom 3 of the tundish 2.
  • the tundish 2 has one or two immersion nozzles 8 through which the steel flows into the moulds, not shown in detail.
  • Apparatus for purifying molten siliconand/or aluminium-killed steel with the aid of a purifying slag upon the molten metal in a continuous casting process and disposed between the casting ladle and a continuous casting machine comprising:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
  • Silicon Compounds (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Compositions Of Oxide Ceramics (AREA)
US419708A 1973-03-12 1973-11-28 Apparatus for purifying in continuous casting silicon- and/or aluminium-killed steel Expired - Lifetime US3887171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2312137A DE2312137B2 (de) 1973-03-12 1973-03-12 Verfahren zum Abgießen von mit Silizium und/oder Aluminium beruhigten Stählen im Strang

Publications (1)

Publication Number Publication Date
US3887171A true US3887171A (en) 1975-06-03

Family

ID=5874499

Family Applications (1)

Application Number Title Priority Date Filing Date
US419708A Expired - Lifetime US3887171A (en) 1973-03-12 1973-11-28 Apparatus for purifying in continuous casting silicon- and/or aluminium-killed steel

Country Status (7)

Country Link
US (1) US3887171A (xx)
JP (1) JPS5047821A (xx)
AT (1) AT330973B (xx)
BE (1) BE807642A (xx)
DE (1) DE2312137B2 (xx)
FR (1) FR2323468A1 (xx)
GB (1) GB1467024A (xx)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042229A (en) * 1975-06-17 1977-08-16 Foseco Trading A.G. Tundish with weirs
US4043543A (en) * 1976-05-19 1977-08-23 Foseco Trading A.G. Tundish with weirs
US4323108A (en) * 1979-05-02 1982-04-06 Ozdi Kohaszati Uzemek Tundish and process for casting from charge to charge in continuous steel foundry
US4591135A (en) * 1984-08-15 1986-05-27 Inland Steel Company Fluid flow control structure for tundish
US4653733A (en) * 1984-10-03 1987-03-31 Inland Steel Company Tundish with fluid flow control structure
US4754800A (en) * 1985-12-13 1988-07-05 Inland Steel Company Preventing undissolved alloying ingredient from entering continuous casting mold
US4756749A (en) * 1985-12-06 1988-07-12 Centro Sviluppo Materiali S.P.A. Process for control of continuous casting conditions
US5072916A (en) * 1990-05-29 1991-12-17 Magneco/Metrel, Inc. Tundish impact pad
US5131635A (en) * 1990-05-29 1992-07-21 Magneco/Metrel, Inc. Impact pad with rising flow surface
US5133535A (en) * 1990-05-29 1992-07-28 Magneco/Metrel, Inc. Impact pad with horizontal flow guides
US5160480A (en) * 1991-06-03 1992-11-03 Usx Corporation Tundish turbulence suppressor pad
US5188796A (en) * 1990-05-29 1993-02-23 Magneco/Metrel, Inc. Tundish impact pad
US5358551A (en) * 1993-11-16 1994-10-25 Ccpi, Inc. Turbulence inhibiting tundish and impact pad and method of using
US5518153A (en) * 1994-11-09 1996-05-21 Foseco International Limited Tundish impact pad
US5551672A (en) * 1995-01-13 1996-09-03 Bethlehem Steel Corporation Apparatus for controlling molten metal flow in a tundish to enhance inclusion float out from a molten metal bath
USRE35685E (en) * 1992-02-07 1997-12-09 Bethlehem Steel Corporation Impact pad for a continuous caster tundish
US6102260A (en) * 1996-11-21 2000-08-15 Psc Technologies, Inc. Impact pad
US6156260A (en) * 1996-11-21 2000-12-05 Psc Technologies, Inc. Chamber for reception, lateral division and redirection of liquid metal flow
DE10202537C1 (de) * 2002-01-24 2003-01-23 Intocast Ag Feuerfestprodukte Pralltopf
DE10257395A1 (de) * 2002-12-06 2004-06-24 Weerulin Feuerfeste Produkte Gmbh & Co. Kg Einlegekörper für Zwischenbehälter
US6929775B2 (en) 2002-09-04 2005-08-16 Magneco/Metrel, Inc. Tundish impact pad
US20060162894A1 (en) * 2003-07-02 2006-07-27 Alfredo Poloni Feed device for feeding molten metal in to a crystallizer
CN101837449B (zh) * 2010-05-13 2012-02-29 西南铝业（集团）有限责任公司 一种铝合金锭铸造液位-液流分配漏斗
CN103990786A (zh) * 2014-05-16 2014-08-20 莱芜钢铁集团有限公司 一种用于去除双流板坯连铸机中间包内钢液夹杂物的装置及方法
CN103990772A (zh) * 2014-05-16 2014-08-20 莱芜钢铁集团有限公司 一种用于去除双流板坯连铸机中间包内钢液夹杂物的冶金装置
US9511419B2 (en) 2010-07-27 2016-12-06 Magnesita Refratarios S/A Impact pad for use in tundish of continuous casting steel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742592Y2 (xx) * 1976-02-13 1982-09-20
US4995592A (en) * 1988-12-22 1991-02-26 Foseco International Limited Purifying molten metal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302999A (en) * 1941-02-03 1942-11-24 William A O'brien Method of and apparatus for introducing addition ingredients into molten metals
US3343828A (en) * 1962-03-30 1967-09-26 Air Reduction High vacuum furnace
US3514519A (en) * 1968-02-08 1970-05-26 Lectromelt Corp Heated transfer vessel for molten metal casting apparatus and method
US3780788A (en) * 1971-09-07 1973-12-25 Bethlehem Steel Corp Method for continuously casting steel using a partially coated refactory nozzle
US3814167A (en) * 1971-06-04 1974-06-04 Es Alpine Montan Ag Process for separating non-metallic inclusions from hot liquid metal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE755850A (fr) * 1969-09-09 1971-02-15 Kloeckner Werke Ag Procede et dispositif de coulee en continu d'aciers calmes a l'aluminium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302999A (en) * 1941-02-03 1942-11-24 William A O'brien Method of and apparatus for introducing addition ingredients into molten metals
US3343828A (en) * 1962-03-30 1967-09-26 Air Reduction High vacuum furnace
US3514519A (en) * 1968-02-08 1970-05-26 Lectromelt Corp Heated transfer vessel for molten metal casting apparatus and method
US3814167A (en) * 1971-06-04 1974-06-04 Es Alpine Montan Ag Process for separating non-metallic inclusions from hot liquid metal
US3780788A (en) * 1971-09-07 1973-12-25 Bethlehem Steel Corp Method for continuously casting steel using a partially coated refactory nozzle

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042229A (en) * 1975-06-17 1977-08-16 Foseco Trading A.G. Tundish with weirs
US4043543A (en) * 1976-05-19 1977-08-23 Foseco Trading A.G. Tundish with weirs
US4323108A (en) * 1979-05-02 1982-04-06 Ozdi Kohaszati Uzemek Tundish and process for casting from charge to charge in continuous steel foundry
US4591135A (en) * 1984-08-15 1986-05-27 Inland Steel Company Fluid flow control structure for tundish
US4653733A (en) * 1984-10-03 1987-03-31 Inland Steel Company Tundish with fluid flow control structure
US4756749A (en) * 1985-12-06 1988-07-12 Centro Sviluppo Materiali S.P.A. Process for control of continuous casting conditions
US4754800A (en) * 1985-12-13 1988-07-05 Inland Steel Company Preventing undissolved alloying ingredient from entering continuous casting mold
US5072916A (en) * 1990-05-29 1991-12-17 Magneco/Metrel, Inc. Tundish impact pad
US5131635A (en) * 1990-05-29 1992-07-21 Magneco/Metrel, Inc. Impact pad with rising flow surface
US5133535A (en) * 1990-05-29 1992-07-28 Magneco/Metrel, Inc. Impact pad with horizontal flow guides
US5188796A (en) * 1990-05-29 1993-02-23 Magneco/Metrel, Inc. Tundish impact pad
US5160480A (en) * 1991-06-03 1992-11-03 Usx Corporation Tundish turbulence suppressor pad
EP0535792A1 (en) * 1991-09-30 1993-04-07 Magneco/Metrel, Inc. Impact pad for use in a tundish vessel; and tundish vessel comprising same
USRE35685E (en) * 1992-02-07 1997-12-09 Bethlehem Steel Corporation Impact pad for a continuous caster tundish
US5358551A (en) * 1993-11-16 1994-10-25 Ccpi, Inc. Turbulence inhibiting tundish and impact pad and method of using
US5518153A (en) * 1994-11-09 1996-05-21 Foseco International Limited Tundish impact pad
US5551672A (en) * 1995-01-13 1996-09-03 Bethlehem Steel Corporation Apparatus for controlling molten metal flow in a tundish to enhance inclusion float out from a molten metal bath
US6102260A (en) * 1996-11-21 2000-08-15 Psc Technologies, Inc. Impact pad
US6156260A (en) * 1996-11-21 2000-12-05 Psc Technologies, Inc. Chamber for reception, lateral division and redirection of liquid metal flow
DE10202537C1 (de) * 2002-01-24 2003-01-23 Intocast Ag Feuerfestprodukte Pralltopf
US6929775B2 (en) 2002-09-04 2005-08-16 Magneco/Metrel, Inc. Tundish impact pad
DE10257395A1 (de) * 2002-12-06 2004-06-24 Weerulin Feuerfeste Produkte Gmbh & Co. Kg Einlegekörper für Zwischenbehälter
US20060162894A1 (en) * 2003-07-02 2006-07-27 Alfredo Poloni Feed device for feeding molten metal in to a crystallizer
US7302996B2 (en) * 2003-07-02 2007-12-04 Danieli & C. Officine Meccaniche S.P.A. Feed device for feeding molten metal into a crystallizer
CN101837449B (zh) * 2010-05-13 2012-02-29 西南铝业（集团）有限责任公司 一种铝合金锭铸造液位-液流分配漏斗
US9511419B2 (en) 2010-07-27 2016-12-06 Magnesita Refratarios S/A Impact pad for use in tundish of continuous casting steel
CN103990786A (zh) * 2014-05-16 2014-08-20 莱芜钢铁集团有限公司 一种用于去除双流板坯连铸机中间包内钢液夹杂物的装置及方法
CN103990772A (zh) * 2014-05-16 2014-08-20 莱芜钢铁集团有限公司 一种用于去除双流板坯连铸机中间包内钢液夹杂物的冶金装置
CN103990786B (zh) * 2014-05-16 2016-05-25 莱芜钢铁集团有限公司 一种用于去除双流板坯连铸机中间包内钢液夹杂物的装置及方法

Also Published As

Publication number Publication date
DE2312137B2 (de) 1975-02-27
BE807642A (fr) 1974-03-15
GB1467024A (en) 1977-03-16
FR2323468B1 (xx) 1979-01-26
JPS5047821A (xx) 1975-04-28
FR2323468A1 (fr) 1977-04-08
ATA989173A (de) 1975-10-15
DE2312137A1 (de) 1974-10-03
AT330973B (de) 1976-07-26

Similar Documents

Publication Publication Date Title
US3887171A (en) Apparatus for purifying in continuous casting silicon- and/or aluminium-killed steel
US3954134A (en) Apparatus for treating metal melts with a purging gas during continuous casting
EP0095645B1 (en) Method and apparatus for melting and casting metal
US4632368A (en) Continuous casting tundish with post-refining treatment reactor functions
GB1400556A (en) Continuous casting
US3459537A (en) Continuously cast steel slabs and method of making same
ES456835A1 (es) Perfeccionamientos en instalaciones de colada continua.
US3888294A (en) Method of continuously casting steel
CA1096633A (en) Continuous stream treatment of ductile iron
US3871870A (en) Method of adding rare earth metals or their alloys into liquid steel
JP4023289B2 (ja) 連続鋳造による高清浄度鋼鋳片の製造方法
US3935895A (en) Continuous steel casting method
US4619443A (en) Gas distributing tundish barrier
GB1313736A (en) Process for the continuous casting of aluminium-killed steels
JP5712574B2 (ja) 高清浄度鋼の連続鋳造方法
JP2019214057A (ja) 連続鋳造方法
US4287933A (en) Continuous casting method with rotary melt movement
JPS5586662A (en) Molten slag removing device in tundish in continuous casting
JPS561252A (en) Tundish for continuous casting
US3703924A (en) Apparatus for introducing molten metal into a strand casting mold
US2928150A (en) Temperature control during metal casting
US3426833A (en) Process for the manufacture of steel ingots
CN214321800U (zh) 一种具有防溢出功能的连铸中间包
JPS5873713A (ja) 強脱酸元素添加鋼の製造方法
KR20180094235A (ko) 용강 처리 방법