FR2635789B1 - Procede d'elaboration d'acier a faible teneur en azote dans un four poche - Google Patents

Procede d'elaboration d'acier a faible teneur en azote dans un four poche

Info

Publication number
FR2635789B1
FR2635789B1 FR8811313A FR8811313A FR2635789B1 FR 2635789 B1 FR2635789 B1 FR 2635789B1 FR 8811313 A FR8811313 A FR 8811313A FR 8811313 A FR8811313 A FR 8811313A FR 2635789 B1 FR2635789 B1 FR 2635789B1
Authority
FR
France
Prior art keywords
low nitrogen
producing low
nitrogen steel
pocket
oven
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 - Fee Related
Application number
FR8811313A
Other languages
English (en)
Other versions
FR2635789A1 (fr
Inventor
Jean Foulard
Sara Hornby Anderson
Noel Lutgen
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 SA
Liquid Air Corp
Air Liquide America Corp
Original Assignee
Air Liquide SA
Liquid Air Corp
Air Liquide America 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 Air Liquide SA, Liquid Air Corp, Air Liquide America Corp filed Critical Air Liquide SA
Priority to FR8811313A priority Critical patent/FR2635789B1/fr
Priority to US07/397,976 priority patent/US4990183A/en
Publication of FR2635789A1 publication Critical patent/FR2635789A1/fr
Application granted granted Critical
Publication of FR2635789B1 publication Critical patent/FR2635789B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
FR8811313A 1988-08-29 1988-08-29 Procede d'elaboration d'acier a faible teneur en azote dans un four poche Expired - Fee Related FR2635789B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8811313A FR2635789B1 (fr) 1988-08-29 1988-08-29 Procede d'elaboration d'acier a faible teneur en azote dans un four poche
US07/397,976 US4990183A (en) 1988-08-29 1989-08-24 Process for producing steel having a low content of nitrogen in a ladle furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8811313A FR2635789B1 (fr) 1988-08-29 1988-08-29 Procede d'elaboration d'acier a faible teneur en azote dans un four poche

Publications (2)

Publication Number Publication Date
FR2635789A1 FR2635789A1 (fr) 1990-03-02
FR2635789B1 true FR2635789B1 (fr) 1993-04-23

Family

ID=9369564

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8811313A Expired - Fee Related FR2635789B1 (fr) 1988-08-29 1988-08-29 Procede d'elaboration d'acier a faible teneur en azote dans un four poche

Country Status (2)

Country Link
US (1) US4990183A (fr)
FR (1) FR2635789B1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2076504T3 (es) * 1991-11-28 1995-11-01 Carbagas Procedimiento para suprimir el polvo y el humo durante la fabricacion.
US5344478A (en) * 1993-08-02 1994-09-06 Air Products And Chemicals, Inc. Vortex dispersing nozzle for liquefied cryogenic inert gases used in blanketing of molten metals exposed to ambient air and method
KR0179394B1 (ko) * 1994-06-06 1999-02-18 도자끼 시노부 함Cr용강의 탈탄 정련방법
US5518221A (en) * 1994-11-30 1996-05-21 Air Products And Chemicals, Inc. Method and apparatus for inert gas blanketing of a reactor or vessel used to process materials at elevated temperatures such as an induction furnace used to remelt metals for casting
US5674309A (en) * 1995-09-21 1997-10-07 Praxair Technology, Inc. Method and apparatus for controlled turbulent purging of open containers
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
US6398844B1 (en) * 2000-02-07 2002-06-04 Air Products And Chemicals, Inc. Blanketing molten nonferrous metals and alloys with gases having reduced global warming potential
US6521018B2 (en) 2000-02-07 2003-02-18 Air Products And Chemicals, Inc. Blanketing metals and alloys at elevated temperatures with gases having reduced global warming potential
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
US20080003127A1 (en) * 2006-07-03 2008-01-03 Honeywell International Inc. Non-Ferrous Metal Cover Gases
US20100242677A1 (en) * 2006-07-03 2010-09-30 Honeywell International Inc. Non-ferrous metal cover gases
US20080000647A1 (en) * 2006-07-03 2008-01-03 Honeywell International Inc. Non-Ferrous Metal Cover Gases
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
ES2366454T3 (es) * 2006-08-23 2011-10-20 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Volumen de gas de expansión reforzado con vapor para minimizar la contaminación de productos tratados en un horno de fusión.
CN100596309C (zh) * 2008-06-18 2010-03-31 中国科学院金属研究所 一种10～30吨底漏钢包炉外精炼方法
CN102560003A (zh) * 2012-01-29 2012-07-11 北京科技大学 一种顶吹氩气防止lf精炼过程钢水增氮的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971655A (en) * 1974-08-21 1976-07-27 Nippon Steel Corporation Method for treatment of molten steel in a ladle
FR2473064A1 (fr) * 1980-01-02 1981-07-10 Siderurgie Fse Inst Rech Procede de brassage pneumatique d'un bain de metal en fusion
JPS58130217A (ja) * 1982-01-27 1983-08-03 Daido Steel Co Ltd 取鍋精錬法
JPS59150009A (ja) * 1983-02-12 1984-08-28 Daido Steel Co Ltd 鋼の精錬方法
FR2545393B1 (fr) * 1983-05-04 1985-09-06 Air Liquide Procede de production de particules solides metalliques a partir d'un bain metallique
FR2607829A1 (fr) * 1986-12-09 1988-06-10 Cootec Deutschland Gmbh Procede de traitement d'acier en poche
DE3700701A1 (de) * 1987-01-13 1988-07-21 Rheinische Maschinenfabrik & E Verfahren und vorrichtung zum schutz einer fluessigkeit gegen umgebungssauerstoff

Also Published As

Publication number Publication date
US4990183A (en) 1991-02-05
FR2635789A1 (fr) 1990-03-02

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Legal Events

Date Code Title Description
ST Notification of lapse