EP0255450A3 - Device for gas-shielding a molten metal jet - Google Patents

Device for gas-shielding a molten metal jet Download PDF

Info

Publication number
EP0255450A3
EP0255450A3 EP87401801A EP87401801A EP0255450A3 EP 0255450 A3 EP0255450 A3 EP 0255450A3 EP 87401801 A EP87401801 A EP 87401801A EP 87401801 A EP87401801 A EP 87401801A EP 0255450 A3 EP0255450 A3 EP 0255450A3
Authority
EP
European Patent Office
Prior art keywords
carbon dioxide
steel
vapor
atmosphere
vessel
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.)
Granted
Application number
EP87401801A
Other languages
French (fr)
Other versions
EP0255450A2 (en
EP0255450B1 (en
Inventor
Guy Savard
Robert Gum Hong Lee
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.)
Air Liquide Canada Inc
Original Assignee
Air Liquide Canada Inc
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 Air Liquide Canada Inc filed Critical Air Liquide Canada Inc
Priority to AT87401801T priority Critical patent/ATE51352T1/en
Publication of EP0255450A2 publication Critical patent/EP0255450A2/en
Publication of EP0255450A3 publication Critical patent/EP0255450A3/en
Application granted granted Critical
Publication of EP0255450B1 publication Critical patent/EP0255450B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/003—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using inert gases
    • 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
    • B22D11/106—Shielding the molten jet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Laminated Bodies (AREA)
  • Air Bags (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Coating With Molten Metal (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Glass Compositions (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Ink Jet (AREA)

Abstract

Molten steel, normally exposed to an atmosphere of air, is protected against pick-up of impurities by placing carbon dioxide gas in such quantities and in such proximity to the surface to cause dissociation of the carbon dioxide at a rate which furnishes an atmosphere of carbon monoxide and gives off a negligible amount of oxygen to the steel, thus providing a gas barrier or shroud isolating the steel from the surrounding atmosphere and preventing pick-up therefrom of oxygen, nitrogen or hydrogen. This method may be applied to protecting steel being transferred from a ladle to a mold, or from a ladle to a tundish and from the tundish to a mold in continuous casting. In a method where a number of shrouding operations are carried out in series, carbon dioxide vapor, under pressure, is bled, in increments, from a storage vessel containing a body of liquid carbon dioxide in overlying ullage space containing vapor. Each increment is superheated, after it leaves the vessel, and is ultimately expanded and dispersed at ambient temperature to form the shroud. As each increment of vapor is removed from the vessel, it is replaced by withdrawing liquid carbon dioxide, vaporizing it and returning it to the ullage space.
EP87401801A 1984-02-24 1985-02-22 Device for gas-shielding a molten metal jet Expired - Lifetime EP0255450B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401801T ATE51352T1 (en) 1984-02-24 1985-02-22 DEVICE FOR GAS PROTECTION OF A LIQUID METAL CASTING JET.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA448241 1984-02-24
CA448241 1984-02-24

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP85400326.6 Division 1985-02-22
EP85400326A Division EP0154585A3 (en) 1984-02-24 1985-02-22 Method for casting a liquid metal

Publications (3)

Publication Number Publication Date
EP0255450A2 EP0255450A2 (en) 1988-02-03
EP0255450A3 true EP0255450A3 (en) 1988-05-18
EP0255450B1 EP0255450B1 (en) 1990-03-28

Family

ID=4127268

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87401801A Expired - Lifetime EP0255450B1 (en) 1984-02-24 1985-02-22 Device for gas-shielding a molten metal jet
EP85400326A Withdrawn EP0154585A3 (en) 1984-02-24 1985-02-22 Method for casting a liquid metal

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP85400326A Withdrawn EP0154585A3 (en) 1984-02-24 1985-02-22 Method for casting a liquid metal

Country Status (8)

Country Link
US (1) US4614216A (en)
EP (2) EP0255450B1 (en)
JP (1) JPS60203338A (en)
AT (1) ATE51352T1 (en)
AU (1) AU573779B2 (en)
DE (1) DE3576792D1 (en)
ES (1) ES8602460A1 (en)
ZA (1) ZA85911B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657587A (en) * 1985-02-21 1987-04-14 Canadian Liquid Air Ltd./Air Liquide Canada Ltee Molten metal casting
FR2607039B1 (en) * 1986-11-26 1989-03-31 Air Liquide STEEL CASTING PROCESS INCLUDING INERING OF THE STEEL BATH WITH CARBONIC ANHYDRIDE IN THE FORM OF SNOW
US4723997A (en) * 1987-04-20 1988-02-09 L'air Liquide Method and apparatus for shielding a stream of liquid metal
FR2623890B1 (en) * 1987-11-26 1990-03-30 Air Liquide CARBON SNOW LAUNCH FOR METALLURGY
DE3904415C1 (en) * 1989-02-14 1990-04-26 Intracon Handelsgesellschaft Fuer Industriebedarf M.B.H., 6200 Wiesbaden, De
EP0544967B1 (en) * 1991-11-28 1995-06-14 Carbagas Process for suppression of dust and fumes during electric steel production
US5487005A (en) 1994-02-07 1996-01-23 Eaton Corporation Method/system for determination of gross combined weight of vehicles equipped with electronic data links
US6228187B1 (en) 1998-08-19 2001-05-08 Air Liquide America Corp. Apparatus and methods for generating an artificial atmosphere for the heat treating of materials
US6491863B2 (en) 2000-12-12 2002-12-10 L'air Liquide-Societe' Anonyme A' Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes George Claude Method and apparatus for efficient utilization of a cryogen for inert cover in metals melting furnaces
US20090064821A1 (en) * 2006-08-23 2009-03-12 Air Liquide Industrial U.S. Lp Vapor-Reinforced Expanding Volume of Gas to Minimize the Contamination of Products Treated in a Melting Furnace
US20080184848A1 (en) * 2006-08-23 2008-08-07 La Sorda Terence D Vapor-Reinforced Expanding Volume of Gas to Minimize the Contamination of Products Treated in a Melting Furnace
US8403187B2 (en) * 2006-09-27 2013-03-26 Air Liquide Industrial U.S. Lp Production of an inert blanket in a furnace
US8932385B2 (en) 2011-10-26 2015-01-13 Air Liquide Industrial U.S. Lp Apparatus and method for metal surface inertion by backfilling
WO2013075092A1 (en) 2011-11-17 2013-05-23 Nucor Corporation Method of continuous casting thin steel strip
CN112387948B (en) * 2020-11-25 2022-06-14 宝钢德盛不锈钢有限公司 Production method for reducing mountain scale at edge of hot-rolled 200-series stainless steel coil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1920421A1 (en) * 1969-04-22 1970-11-12 Ural Zd Tjazelogo Masinostroje Gas supply to the sealed upper ingot mould - chamber in continuous metal casting plant
DE2040504A1 (en) * 1970-08-14 1972-02-17 Basf Ag Ingot casting - with addition of metal carbonyl - contg reducing or inert gases before solidification
LU70560A1 (en) * 1973-07-24 1974-11-28
EP0005820A1 (en) * 1978-06-01 1979-12-12 Concast Holding Ag Process and device for the continuous casting of metals by one or several lines

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR434070A (en) * 1910-11-14 1912-01-24 Marcellin Reymondier New casting and molding process to obtain healthy and homogeneous steels, cast irons, metals or alloys
US1227573A (en) * 1917-04-12 1917-05-29 William A Bole Method of making castings.
US1978222A (en) * 1932-09-24 1934-10-23 Allegheny Steel Co Method of and apparatus for treating metallic materials
US2343842A (en) * 1942-09-05 1944-03-07 Mahoning Paint And Oil Company Method of coating ingots
DE1137531B (en) * 1957-12-03 1962-10-04 U C P M I Union De Consommateu Process for treating steel during casting
US3174200A (en) * 1961-06-15 1965-03-23 Union Carbide Corp Method of purging mold and pouring metal therein
US3392009A (en) * 1965-10-23 1968-07-09 Union Carbide Corp Method of producing low carbon, non-aging, deep drawing steel
BE677958A (en) * 1966-03-16 1966-09-16
US3451594A (en) * 1966-05-17 1969-06-24 Sigmund W Stewart Tundish nozzle construction
FR2396920A1 (en) * 1977-07-05 1979-02-02 Air Liquide CONTROLLED CRYOGENIC FLUID INJECTION DEVICE
JPS54134033A (en) * 1978-04-10 1979-10-18 Kawasaki Steel Co Oxidation prevention of molten steel in bottom poured casting
JPS5736046A (en) * 1980-08-15 1982-02-26 Kikai Syst Shinko Kyokai Continuous casting method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1920421A1 (en) * 1969-04-22 1970-11-12 Ural Zd Tjazelogo Masinostroje Gas supply to the sealed upper ingot mould - chamber in continuous metal casting plant
DE2040504A1 (en) * 1970-08-14 1972-02-17 Basf Ag Ingot casting - with addition of metal carbonyl - contg reducing or inert gases before solidification
LU70560A1 (en) * 1973-07-24 1974-11-28
EP0005820A1 (en) * 1978-06-01 1979-12-12 Concast Holding Ag Process and device for the continuous casting of metals by one or several lines

Also Published As

Publication number Publication date
ATE51352T1 (en) 1990-04-15
EP0154585A2 (en) 1985-09-11
AU3904285A (en) 1985-09-05
EP0255450A2 (en) 1988-02-03
ES540622A0 (en) 1985-12-01
US4614216A (en) 1986-09-30
EP0154585A3 (en) 1986-02-26
EP0255450B1 (en) 1990-03-28
AU573779B2 (en) 1988-06-23
DE3576792D1 (en) 1990-05-03
ES8602460A1 (en) 1985-12-01
JPS60203338A (en) 1985-10-14
ZA85911B (en) 1985-09-25

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