US3809146A - Method of opening an intermediate vessel nozzle for continuous casting - Google Patents

Method of opening an intermediate vessel nozzle for continuous casting Download PDF

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Publication number
US3809146A
US3809146A US00227476A US22747672A US3809146A US 3809146 A US3809146 A US 3809146A US 00227476 A US00227476 A US 00227476A US 22747672 A US22747672 A US 22747672A US 3809146 A US3809146 A US 3809146A
Authority
US
United States
Prior art keywords
steel
vessel
teeming
oxygen
outlet
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
US00227476A
Other languages
English (en)
Inventor
S Andrzajak
R Szumilas
M Orehoski
J Shapland
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.)
United States Steel Corp
Original Assignee
Steel Corp
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 Steel Corp filed Critical Steel Corp
Priority to US00227476A priority Critical patent/US3809146A/en
Priority to ZA722239A priority patent/ZA722239B/xx
Priority to AU40959/72A priority patent/AU464015B2/en
Priority to IE466/72A priority patent/IE36273B1/xx
Priority to BE781901A priority patent/BE781901A/xx
Priority to AR241415A priority patent/AR192926A1/es
Priority to FR7212720A priority patent/FR2172057B1/fr
Priority to NLAANVRAGE7204984,A priority patent/NL172837C/xx
Priority to DE19722218155 priority patent/DE2218155C3/de
Priority to GB1768272A priority patent/GB1391984A/en
Priority to BR2269/72A priority patent/BR7202269D0/pt
Priority to IT68197/72A priority patent/IT958752B/it
Priority to DK189372AA priority patent/DK129771B/da
Priority to CA140,036,A priority patent/CA951488A/en
Priority to PL1972154824A priority patent/PL70040B1/pl
Priority to NO1355/72A priority patent/NO134036C/no
Priority to ES401949A priority patent/ES401949A1/es
Priority to SU1775752A priority patent/SU504462A3/ru
Priority to YU01059/72A priority patent/YU36456B/xx
Priority to JP47040008A priority patent/JPS5145536B2/ja
Priority to RO70625A priority patent/RO59235A/ro
Priority to AT347072A priority patent/AT322126B/de
Priority to DD168912A priority patent/DD101581A5/xx
Priority to HU73UE00000032A priority patent/HU172909B/hu
Priority to CS731182A priority patent/CS193021B2/cs
Application granted granted Critical
Publication of US3809146A publication Critical patent/US3809146A/en
Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
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
    • 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
    • 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
    • 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

  • molten metal in the recess above the nozzle cools more rapidly than the metal above it because it has a larger surface area in contact with the surrounding refractory, that is, it has a higher surface-to-volume ratio.
  • the cooling action of the refractory can result in the formation of frozen steel or"skull in the nozzle region and prevent stream flow when the nozzle is reopened;
  • the present invention affords a methodof preventing a re' cess from blocking, either before pouring begins or when pouring is interrupted.
  • inert gases can be introduced to molten metal to provide various treatments. For example,
  • an oxygenflow rate of from 8 to 10 cubic feet per minute for a period of 7 to 10 seconds.
  • argon which is a coolant to the steel
  • pure oxygen for just 10 seconds at 8 cubic feetper minute and obtained gas may be insufflated through a porous plugin a sliding gate to stir molten metal within a vessel.
  • FIGURE is a partly diagrammatic cross section through the nozzle of a bottom-pour intermediate vessel equipped with a sliding gate which employs a permeable refractory block in the gas passageway beneath the vessel nozzle and includes our gas-injection apparatus.
  • Vessel 10 has a refractory lining 11 for receiving molten metal.
  • the bottom wall of the vessel has a well or recess 12 and an outlet opening 13 and carries a refractory nozzle plate 14 fixed to its underside aligned with the opening.
  • a sliding gate closure member 15 is mounted beneath the nozzle plate.
  • the gate can be supported and operated in any desired manner, hence, we have not shown the supporting and operatingmecha nism.
  • the gate includes a solid refractory block 16, a surrounding steel jacket 17, and a gas-permeable refractory plug 18 centered in the upper portion of block 16.
  • a pipe 19 is affixed at its upper end to jacket 17 whichforms withplug 18 a cylindrical gas distribution chamber 20. Pipe 19 extendsto sources Zland 22 of inert gas and oxygen rich gas respectively, either of which can be admitted thereto through a three-way a' free-flowing stream'having good stream characteristics.
  • a flow rate of oxygen of less than 5 cubic feet per minute or for a time of less than 5 seconds does not insure that a nozzle will open.
  • a flow rate greaterthan 15 cubic feet per minute of oxygen or for a time greater than 15 seconds overheats the steel, and upon teeming the metalinto the mold, the steel may melt the chill pins in the mold stool on contact.
  • the mold stool will separate from the casting andthe entire heatmay be lost.
  • excessive oxygen oxidizes the carbon in the steel to carbon dioxide, ca'usinghit to leave the steel as a gas.
  • the solidification rate isreducedand breakouts below the mold are not only common, but-arealmostcertain.
  • plate 14 is made of zirconia, which is only efiectiveto about 3,000F, above whichtemperature it willbecome eroded. Oxygen flow throughthe molten metal inthis region will burn out the zirconia insert if theuppermost diameter of the porousplugisequal to or greater than that of the opening of the zirconiainsert.
  • oxygen is c. injecting inert gas to the steel in the vessel through injected at a rate of 8 to 10 scfm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Drilling Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Furnace Details (AREA)
US00227476A 1972-02-18 1972-02-18 Method of opening an intermediate vessel nozzle for continuous casting Expired - Lifetime US3809146A (en)

Priority Applications (25)

Application Number Priority Date Filing Date Title
US00227476A US3809146A (en) 1972-02-18 1972-02-18 Method of opening an intermediate vessel nozzle for continuous casting
ZA722239A ZA722239B (en) 1972-02-18 1972-04-04 Method of and apparatus for opening a nozzle on a hot metal containing vessel
IE466/72A IE36273B1 (en) 1972-02-18 1972-04-10 Method of opening a nozzle on a molten metal containing vessel
BE781901A BE781901A (fr) 1972-02-18 1972-04-10 Procede et appareil pour ouvrir une buse prevue sur un recipient contenant du metal chaud
AU40959/72A AU464015B2 (en) 1972-02-18 1972-04-10 Method of and apparatus for opening a nozzle ona hot metal containing vessel
AR241415A AR192926A1 (es) 1972-02-18 1972-04-12 Metodo y aparatos para el manipuleo del acero liquido contenido en una tolva de colada
FR7212720A FR2172057B1 (hu) 1972-02-18 1972-04-12
NLAANVRAGE7204984,A NL172837C (nl) 1972-02-18 1972-04-13 Werkwijze voor het gieten van vloeibaar staal uit een gietpan, waarbij wordt voorkomen dat het metaal bij de uitstroomopening stolt.
DE19722218155 DE2218155C3 (de) 1972-02-18 1972-04-14 Verfahren zur Behandlung von flüssigem Stahl
BR2269/72A BR7202269D0 (pt) 1972-02-18 1972-04-17 Processo e aparelho para lidar com aco liquido em um deposito intermediario
IT68197/72A IT958752B (it) 1972-02-18 1972-04-17 Procedimento e dispositivo per la colata dei metalli attraverso un ugello di fondo di una siviera o simile
GB1768272A GB1391984A (en) 1972-02-18 1972-04-17 Method of and apparatus for opening a zozzle on a molten metal containing vessel
DK189372AA DK129771B (da) 1972-02-18 1972-04-18 Fremgangsmåde til behandling af flydende stål i en stobetragt som forberedelse til udstøbning af stålet i en strengstøbeform.
PL1972154824A PL70040B1 (hu) 1972-02-18 1972-04-19
NO1355/72A NO134036C (hu) 1972-02-18 1972-04-19
CA140,036,A CA951488A (en) 1972-02-18 1972-04-19 Molten metal vessel nozzle opening method and apparatus
AT347072A AT322126B (de) 1972-02-18 1972-04-20 Verfahren zur behandlung von flüssigem stahl in einem giessgefäss
YU01059/72A YU36456B (en) 1972-02-18 1972-04-20 Method of pre-treating a liquid steel at continuous casting
JP47040008A JPS5145536B2 (hu) 1972-02-18 1972-04-20
RO70625A RO59235A (hu) 1972-02-18 1972-04-20
ES401949A ES401949A1 (es) 1972-02-18 1972-04-20 Procedimiento y aparato para manejar acero liquido en una artesa refractaria.
SU1775752A SU504462A3 (ru) 1972-02-18 1972-04-20 Способ нагрева металла в выпуском отверстии промежуточной емкости при непрерывной разливке
DD168912A DD101581A5 (hu) 1972-02-18 1973-02-16
HU73UE00000032A HU172909B (hu) 1972-02-18 1973-02-16 Sposob nepreryvnoj obrabotki zhidkoj stali v litejnom sosude pered otlivkoj
CS731182A CS193021B2 (en) 1972-02-18 1973-02-19 Method of preparation of the liquid steel in the intermediate ladle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00227476A US3809146A (en) 1972-02-18 1972-02-18 Method of opening an intermediate vessel nozzle for continuous casting

Publications (1)

Publication Number Publication Date
US3809146A true US3809146A (en) 1974-05-07

Family

ID=22853255

Family Applications (1)

Application Number Title Priority Date Filing Date
US00227476A Expired - Lifetime US3809146A (en) 1972-02-18 1972-02-18 Method of opening an intermediate vessel nozzle for continuous casting

Country Status (24)

Country Link
US (1) US3809146A (hu)
JP (1) JPS5145536B2 (hu)
AR (1) AR192926A1 (hu)
AT (1) AT322126B (hu)
AU (1) AU464015B2 (hu)
BE (1) BE781901A (hu)
BR (1) BR7202269D0 (hu)
CA (1) CA951488A (hu)
CS (1) CS193021B2 (hu)
DD (1) DD101581A5 (hu)
DK (1) DK129771B (hu)
ES (1) ES401949A1 (hu)
FR (1) FR2172057B1 (hu)
GB (1) GB1391984A (hu)
HU (1) HU172909B (hu)
IE (1) IE36273B1 (hu)
IT (1) IT958752B (hu)
NL (1) NL172837C (hu)
NO (1) NO134036C (hu)
PL (1) PL70040B1 (hu)
RO (1) RO59235A (hu)
SU (1) SU504462A3 (hu)
YU (1) YU36456B (hu)
ZA (1) ZA722239B (hu)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982582A (en) * 1973-12-08 1976-09-28 Concast Ag Method and apparatus for casting metals into a continuous casting mold
US4003561A (en) * 1973-11-23 1977-01-18 United States Steel Corporation Pouring of metals
US4202533A (en) * 1978-08-24 1980-05-13 Daussan Et Compagnie Method and a device for unchoking the casting outlet of a metallurgical vessel
US4219188A (en) * 1978-08-19 1980-08-26 Stopinc Aktiengesellschaft Slide valve for the injection of material for use in the outlet of a metallurgical vessel
FR2513909A1 (fr) * 1981-10-05 1983-04-08 Korf Technologies Inc Procede et appareil pour le traitement d'un metal liquide dans un recipient
EP0080997A1 (de) * 1981-11-27 1983-06-08 Manfred Dipl.-Ing. Haissig Vorrichtung zum Stranggiessen von Metallen
US4520860A (en) * 1983-02-28 1985-06-04 Manfred Haissig Horizontal continuous casting apparatus
US4602729A (en) * 1983-03-24 1986-07-29 Flo-Con Systems, Inc. Stationary plate and well nozzle for use in a sliding gate valve
US4641768A (en) * 1984-05-11 1987-02-10 Uss Engineers And Consultants, Inc. Teeming apparatus and method
US4697632A (en) * 1982-06-11 1987-10-06 Howmet Turbine Components Corporation Ceramic porous bodies suitable for use with superalloys
US4789140A (en) * 1982-06-11 1988-12-06 Howmet Turbine Components Corporation Ceramic porous bodies suitable for use with superalloys
US5004131A (en) * 1990-04-16 1991-04-02 Bethlehem Steel Corporation Molten metal slide gate valve
US5119976A (en) * 1987-06-05 1992-06-09 Stopinc Aktiengsellschaft Process and apparatus for injecting gas into a discharge opening of a metallurgical vessel
US5945063A (en) * 1997-02-25 1999-08-31 Tokyo Yogyo Kabushiki Kaisha Bottom blown gas blowing apparatus for molten metal ladle

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1575601A (en) * 1976-01-22 1980-09-24 Didier Werke Ag Refractory structures for outlet valves for metallurgical vessels
JPS53115617A (en) * 1977-03-22 1978-10-09 Sumitomo Metal Ind Reducing of large impurities of continuous casted segment
CA1141174A (en) * 1979-10-31 1983-02-15 Guy Savard Homogenization of metal using gas
FR2533473A1 (fr) * 1982-09-28 1984-03-30 Detalle Richard Mode de controle et d'ouverture des orifices de coulee des recipients conteneurs de metaux liquides et autres, et dispositif de mise en oeuvre
CN113365759B (zh) * 2019-01-30 2023-07-25 杰富意钢铁株式会社 滑动水口装置的控制方法及铸片的制造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320053A (en) * 1964-09-25 1967-05-16 Bethlehem Steel Corp Method of injecting gases into steel melts
US3581948A (en) * 1969-08-11 1971-06-01 Interstop Ag Sliding gate of a casting ladle for pouring liquid metals
US3684267A (en) * 1970-01-12 1972-08-15 United States Steel Corp Apparatus for introducing gas to hot metal in a bottom-pour vessel
US3773226A (en) * 1970-04-23 1973-11-20 Didier Werke Ag Container with sliding shutter for a liquid melt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320053A (en) * 1964-09-25 1967-05-16 Bethlehem Steel Corp Method of injecting gases into steel melts
US3581948A (en) * 1969-08-11 1971-06-01 Interstop Ag Sliding gate of a casting ladle for pouring liquid metals
US3684267A (en) * 1970-01-12 1972-08-15 United States Steel Corp Apparatus for introducing gas to hot metal in a bottom-pour vessel
US3773226A (en) * 1970-04-23 1973-11-20 Didier Werke Ag Container with sliding shutter for a liquid melt

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003561A (en) * 1973-11-23 1977-01-18 United States Steel Corporation Pouring of metals
US3982582A (en) * 1973-12-08 1976-09-28 Concast Ag Method and apparatus for casting metals into a continuous casting mold
US4219188A (en) * 1978-08-19 1980-08-26 Stopinc Aktiengesellschaft Slide valve for the injection of material for use in the outlet of a metallurgical vessel
US4202533A (en) * 1978-08-24 1980-05-13 Daussan Et Compagnie Method and a device for unchoking the casting outlet of a metallurgical vessel
FR2513909A1 (fr) * 1981-10-05 1983-04-08 Korf Technologies Inc Procede et appareil pour le traitement d'un metal liquide dans un recipient
EP0080997A1 (de) * 1981-11-27 1983-06-08 Manfred Dipl.-Ing. Haissig Vorrichtung zum Stranggiessen von Metallen
US4697632A (en) * 1982-06-11 1987-10-06 Howmet Turbine Components Corporation Ceramic porous bodies suitable for use with superalloys
US4789140A (en) * 1982-06-11 1988-12-06 Howmet Turbine Components Corporation Ceramic porous bodies suitable for use with superalloys
US4520860A (en) * 1983-02-28 1985-06-04 Manfred Haissig Horizontal continuous casting apparatus
US4602729A (en) * 1983-03-24 1986-07-29 Flo-Con Systems, Inc. Stationary plate and well nozzle for use in a sliding gate valve
US4641768A (en) * 1984-05-11 1987-02-10 Uss Engineers And Consultants, Inc. Teeming apparatus and method
US5119976A (en) * 1987-06-05 1992-06-09 Stopinc Aktiengsellschaft Process and apparatus for injecting gas into a discharge opening of a metallurgical vessel
US5004131A (en) * 1990-04-16 1991-04-02 Bethlehem Steel Corporation Molten metal slide gate valve
US5945063A (en) * 1997-02-25 1999-08-31 Tokyo Yogyo Kabushiki Kaisha Bottom blown gas blowing apparatus for molten metal ladle

Also Published As

Publication number Publication date
JPS5145536B2 (hu) 1976-12-04
DE2218155B2 (de) 1977-06-23
BR7202269D0 (pt) 1973-09-25
DE2218155A1 (de) 1973-08-23
DK129771B (da) 1974-11-18
BE781901A (fr) 1972-10-11
JPS4893530A (hu) 1973-12-04
GB1391984A (en) 1975-04-23
ES401949A1 (es) 1975-10-16
AR192926A1 (es) 1973-03-21
FR2172057B1 (hu) 1978-02-10
DK129771C (hu) 1975-04-28
ZA722239B (en) 1972-12-27
CA951488A (en) 1974-07-23
FR2172057A1 (hu) 1973-09-28
AU4095972A (en) 1973-10-18
NL7204984A (hu) 1973-08-21
YU105972A (en) 1982-02-25
AU464015B2 (en) 1975-07-24
IE36273B1 (en) 1976-09-29
CS193021B2 (en) 1979-09-17
IE36273L (en) 1973-08-18
DD101581A5 (hu) 1973-11-12
RO59235A (hu) 1976-02-15
YU36456B (en) 1984-02-29
HU172909B (hu) 1978-12-28
IT958752B (it) 1973-10-30
NL172837C (nl) 1983-11-01
SU504462A3 (ru) 1976-02-25
NO134036B (hu) 1976-05-03
NL172837B (nl) 1983-06-01
AT322126B (de) 1975-05-12
NO134036C (hu) 1976-08-11
PL70040B1 (hu) 1973-12-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960

Effective date: 19880112