ES413940A1 - Nitrogen control in argon oxygen refining of molten metal - Google Patents

Nitrogen control in argon oxygen refining of molten metal

Info

Publication number
ES413940A1
ES413940A1 ES413940A ES413940A ES413940A1 ES 413940 A1 ES413940 A1 ES 413940A1 ES 413940 A ES413940 A ES 413940A ES 413940 A ES413940 A ES 413940A ES 413940 A1 ES413940 A1 ES 413940A1
Authority
ES
Spain
Prior art keywords
nitrogen
melt
decarburization
oxygen
content
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
Application number
ES413940A
Other languages
Spanish (es)
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.)
Union Carbide Corp
Joslyn Manufacturing and Supply Co
Original Assignee
Union Carbide Corp
Joslyn Manufacturing and Supply Co
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 Union Carbide Corp, Joslyn Manufacturing and Supply Co filed Critical Union Carbide Corp
Publication of ES413940A1 publication Critical patent/ES413940A1/en
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
    • 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
    • C21C7/0685—Decarburising of stainless steel
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

A method of refining molten ferrous metals or alloys whereby the nitrogen content of the refined molten metal can be adjusted to any desired value from 10 ppm to 90% of the concentration at which nitrogen at ambient pressure is in equilibrium with the nitrogen dissolved in the melt, said process including a decarburization step whereby a gaseous mixture containing oxygen and a monatomic gas is injected below the surface of the metal bath, characterized by injecting in an initial period of time the decarburization a gaseous mixture consisting essentially of oxygen and nitrogen, where the percentage of nitrogen is maintained such that the partial pressure of nitrogen in the atmosphere in contact with the melt is greater than the partial pressure of nitrogen in equilibrium with the content of desired nitrogen to be obtained from the refined melt, thereby causing e The nitrogen content of the melt at the end of the first period of decarburization is greater than said desired nitrogen content; inject in the following period of decarburization a gaseous mixture consisting essentially of oxygen and a monoatomic gas, or oxygen, a monoatomic gas and nitrogen; and continue injection with a monoatomic gas and/or nitrogen until the nitrogen content of the melt is reduced to the desired value. (Machine-translation by Google Translate, not legally binding)
ES413940A 1972-04-20 1973-04-19 Nitrogen control in argon oxygen refining of molten metal Expired ES413940A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24573372A 1972-04-20 1972-04-20

Publications (1)

Publication Number Publication Date
ES413940A1 true ES413940A1 (en) 1976-02-01

Family

ID=22927861

Family Applications (1)

Application Number Title Priority Date Filing Date
ES413940A Expired ES413940A1 (en) 1972-04-20 1973-04-19 Nitrogen control in argon oxygen refining of molten metal

Country Status (19)

Country Link
US (1) US3754894A (en)
JP (1) JPS5213493B2 (en)
AT (1) AT340453B (en)
AU (1) AU472272B2 (en)
BE (1) BE798482A (en)
BR (1) BR7302813D0 (en)
CA (1) CA980127A (en)
CS (1) CS256352B2 (en)
DD (1) DD103264A5 (en)
ES (1) ES413940A1 (en)
FI (1) FI73740C (en)
FR (1) FR2180999B1 (en)
GB (1) GB1420179A (en)
HU (1) HU166874B (en)
IL (1) IL42068A (en)
IT (1) IT980292B (en)
NO (1) NO134527C (en)
PL (1) PL85660B1 (en)
SE (1) SE426175B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998666A (en) * 1975-07-30 1976-12-21 United States Steel Corporation Subscale reaction strengthening of low carbon ferrous metal stock
US4081270A (en) * 1977-04-11 1978-03-28 Union Carbide Corporation Renitrogenation of basic-oxygen steels during decarburization
US4260415A (en) * 1979-12-12 1981-04-07 Allegheny Ludlum Steel Corporation Decarburizing molten metal
JPS57155314A (en) * 1981-02-25 1982-09-25 Sumitomo Metal Ind Ltd Refining of high-cr steel
US4436553A (en) 1982-01-22 1984-03-13 Union Carbide Corporation Process to produce low hydrogen steel
JPS5955972U (en) * 1982-10-05 1984-04-12 三洋電機株式会社 Storage case for electric razor
DE3347718C2 (en) * 1983-09-02 1986-05-28 Ulrich Dipl.-Ing. 5905 Freudenberg Glasmeyer Process for the production of steels with a high degree of purity and low gas content in steelworks and steel foundries
US4699654A (en) * 1986-04-08 1987-10-13 Union Carbide Corporation Melting furnace and method for melting metal
JPH08928B2 (en) * 1988-09-29 1996-01-10 川崎製鉄株式会社 Refining method for high N stainless steel
US5327357A (en) * 1991-12-03 1994-07-05 Praxair Technology, Inc. Method of decarburizing molten metal in the refining of steel using neural networks
US6572792B1 (en) * 1999-10-13 2003-06-03 Atomic Ordered Materials, L.L.C. Composition of matter tailoring: system 1
US6921497B2 (en) * 1999-10-13 2005-07-26 Electromagnetics Corporation Composition of matter tailoring: system I
DE10012837C1 (en) * 2000-03-16 2001-07-26 Vsg En & Schmiedetechnik Gmbh Production of steel alloy with a precisely defined nitrogen content comprises adding gaseous alloying component and inert gas to atmosphere in vessel with adjustment of pressure and concentration of the inert gas and the alloying component
US7655160B2 (en) * 2005-02-23 2010-02-02 Electromagnetics Corporation Compositions of matter: system II
KR100922061B1 (en) * 2007-12-12 2009-10-16 주식회사 포스코 Method of manufacturing ultra low carbon ferritic stainless steel
CN102021272B (en) * 2009-09-17 2012-07-18 宝山钢铁股份有限公司 Method for controlling content of nitrogen for stainless steel smelting
NZ610276A (en) 2010-11-22 2015-02-27 Electromagnetics Corp Tailoring a metal or modifying an electronic structure thereof
CN106950932A (en) * 2017-04-14 2017-07-14 长江大学 With grey systems GM（1, N）The natural gas decarbonization device effect analysis method of model
CN111592205A (en) * 2020-06-01 2020-08-28 江苏科技大学 Boats and ships kitchen garbage and domestic sewage recovery processing marsh gas utilization system
CN115125366B (en) * 2021-03-25 2024-05-10 上海梅山钢铁股份有限公司 Intelligent production control method for argon blowing station

Also Published As

Publication number Publication date
HU166874B (en) 1975-06-28
BE798482A (en) 1973-10-19
DD103264A5 (en) 1974-01-12
BR7302813D0 (en) 1974-06-27
ATA351373A (en) 1977-04-15
GB1420179A (en) 1976-01-07
PL85660B1 (en) 1976-04-30
FI73740B (en) 1987-07-31
CS256352B2 (en) 1988-04-15
AT340453B (en) 1977-12-12
AU5430573A (en) 1974-10-10
US3754894A (en) 1973-08-28
JPS5213493B2 (en) 1977-04-14
AU472272B2 (en) 1976-05-20
DE2320165A1 (en) 1973-10-31
CA980127A (en) 1975-12-23
FR2180999A1 (en) 1973-11-30
SE426175B (en) 1982-12-13
JPS4921317A (en) 1974-02-25
CS283873A2 (en) 1987-09-17
DE2320165B2 (en) 1976-02-26
IL42068A (en) 1975-11-25
IL42068A0 (en) 1973-06-29
FI73740C (en) 1988-11-22
FR2180999B1 (en) 1976-05-28
NO134527C (en) 1976-10-27
IT980292B (en) 1974-09-30
NO134527B (en) 1976-07-19

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