FR2021885B1 - - Google Patents

Info

Publication number
FR2021885B1
FR2021885B1 FR6936500A FR6936500A FR2021885B1 FR 2021885 B1 FR2021885 B1 FR 2021885B1 FR 6936500 A FR6936500 A FR 6936500A FR 6936500 A FR6936500 A FR 6936500A FR 2021885 B1 FR2021885 B1 FR 2021885B1
Authority
FR
France
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
Application number
FR6936500A
Other languages
French (fr)
Other versions
FR2021885A1 (cs
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.)
Allegheny Ludlum Steel Corp
Original Assignee
Allegheny Ludlum 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 Allegheny Ludlum Steel Corp filed Critical Allegheny Ludlum Steel Corp
Publication of FR2021885A1 publication Critical patent/FR2021885A1/fr
Application granted granted Critical
Publication of FR2021885B1 publication Critical patent/FR2021885B1/fr
Expired 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • 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
    • C21C7/068—Decarburising
FR6936500A 1968-10-30 1969-10-24 Expired FR2021885B1 (cs)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77175268A 1968-10-30 1968-10-30
US14008571A 1971-05-04 1971-05-04

Publications (2)

Publication Number Publication Date
FR2021885A1 FR2021885A1 (cs) 1970-07-24
FR2021885B1 true FR2021885B1 (cs) 1974-08-09

Family

ID=26837856

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6936500A Expired FR2021885B1 (cs) 1968-10-30 1969-10-24

Country Status (6)

Country Link
US (2) US3594155A (cs)
AT (1) AT315883B (cs)
BE (1) BE741027A (cs)
DE (1) DE1953888C3 (cs)
FR (1) FR2021885B1 (cs)
GB (1) GB1283086A (cs)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1916945C3 (de) * 1969-04-02 1980-04-17 Eisenwerk-Gesellschaft Maximilianshuette Mbh, 8458 Sulzbach-Rosenberg Anwendung des Mantelgas-Verfahrens zum Frischen von Roheisen zu Stahl
DE2007373B2 (de) * 1970-02-18 1973-05-03 Eisenwerk-Gesellschaft Maximilianshütte mbH, 8458 Sulzbach-Rosenberg Verfahren und konverter zum herstellen ferritischer chromstaehle
US3754895A (en) * 1971-01-27 1973-08-28 Allegheny Ludlum Ind Inc Process for decarburization of steels
US3847593A (en) * 1971-07-13 1974-11-12 Centro Speriment Metallurg Process for refining metals, in particular liquid pig iron, in oxygen converters with continuous control of the operative procedure
US3816720A (en) * 1971-11-01 1974-06-11 Union Carbide Corp Process for the decarburization of molten metal
US3798025A (en) * 1971-12-29 1974-03-19 Allegheny Ludlum Ind Inc Vacuum decarburization in rh and dh type degassing systems
US3920447A (en) * 1972-02-28 1975-11-18 Pennsylvania Engineering Corp Steel production method
DE2310240C2 (de) * 1973-03-01 1988-03-03 Fried. Krupp Gmbh, 4300 Essen Verfahren zur Überwachung und Regelung der Entkohlung beim Roheisen- Frischen und Vorrichtung zur Durchführung des Verfahrens
US4149877A (en) * 1974-06-27 1979-04-17 Centre De Recherches Metallurgiques, Centrum Voor Research In De Metallurgie Controlling pig iron refining
GB1559688A (en) * 1976-04-30 1980-01-23 British Steel Corp Refining molten metal
AT346877B (de) * 1976-08-04 1978-11-27 Voest Ag Verfahren zur steuerung eines stahlfrischpro- zesses fuer staehle mit einem c-gehalt im bereich von 0,1 bis 0,8 gew.-%
US4130419A (en) * 1977-03-11 1978-12-19 Linde Ag Process for the purification, modification and heating of a cast-iron melt
JPS5442324A (en) * 1977-09-10 1979-04-04 Nisshin Steel Co Ltd Control procedure of steel making process using mass spectrometer
JPS5442323A (en) * 1977-09-10 1979-04-04 Nisshin Steel Co Ltd Control procedure of steel making process using mass spectormeter
JPS569319A (en) * 1979-07-05 1981-01-30 Nippon Steel Corp Vacuum treatment controller for molten steel
FR2472615A1 (fr) 1979-11-28 1981-07-03 Merrien Pierre Procede et dispositif d'automatisation d'un cycle de degazage sous vide d'alliages d'aluminium
US4260415A (en) * 1979-12-12 1981-04-07 Allegheny Ludlum Steel Corporation Decarburizing molten metal
DE3601337A1 (de) * 1986-01-16 1987-07-23 Mannesmann Ag Verfahren zur herstellung hochlegierter staehle im sauerstoffblaskonverter
DE3706742A1 (de) * 1987-02-28 1988-09-08 Salzgitter Peine Stahlwerke Verfahren und vorrichtung zur entgasungsbehandlung einer stahlschmelze in einer vakuumanlage
US4961784A (en) * 1987-08-13 1990-10-09 Nkk Corporation Method of smelting reduction of chromium raw materials and a smelting reduction furnace thereof
EP0355163B1 (en) * 1987-09-10 1994-06-22 Nkk Corporation Process for producing molten stainless steel
US5417739A (en) * 1993-12-30 1995-05-23 Ltv Steel Company, Inc. Method of making high nitrogen content steel
US5865876A (en) * 1995-06-07 1999-02-02 Ltv Steel Company, Inc. Multipurpose lance
US5830259A (en) * 1996-06-25 1998-11-03 Ltv Steel Company, Inc. Preventing skull accumulation on a steelmaking lance
US5885323A (en) * 1997-04-25 1999-03-23 Ltv Steel Company, Inc. Foamy slag process using multi-circuit lance
ITRM20010146A1 (it) * 2001-03-21 2002-09-21 Acciai Speciali Terni Spa Metodo e sistema di controllo per convertitori aod.
US6923843B1 (en) 2001-11-13 2005-08-02 Nupro Corporation Method for oxygen injection in metallurgical process requiring variable oxygen feed rate

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252790A (en) * 1956-06-27 1966-05-24 Union Carbide Corp Preparation of metals and alloys
BE610265A (cs) * 1960-11-18
CA692788A (en) * 1960-11-18 1964-08-18 C. Nelson Edward Decarburization, deoxidation and alloy addition
FR1444050A (fr) * 1964-05-13 1966-07-01 Beteiligungs & Patentverw Gmbh Procédé de réglage automatique du processus de soufflage d'oxygène
FR1466041A (fr) * 1965-02-03 1967-01-13 Dynamit Nobel Ag Procédé de préparation d'acétals de copolymères renfermant des groupes polyhydroxyméthylène ou hydroxyméthylène
FR1486820A (fr) * 1966-07-15 1967-06-30 Leeds & Northrup Co Procédé et appareil pour la commande d'un four basique à oxygène pour la production de l'acier
LU52976A1 (cs) * 1967-02-13 1968-10-09

Also Published As

Publication number Publication date
US3748122A (en) 1973-07-24
US3594155A (en) 1971-07-20
AT315883B (de) 1974-06-10
GB1283086A (en) 1972-07-26
DE1953888A1 (de) 1970-05-06
DE1953888B2 (de) 1980-09-04
DE1953888C3 (de) 1981-04-16
FR2021885A1 (cs) 1970-07-24
BE741027A (cs) 1970-04-30

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Legal Events

Date Code Title Description
ST Notification of lapse