DE3070959D1 - Improved method of decarburizing molten metal - Google Patents

Improved method of decarburizing molten metal

Info

Publication number
DE3070959D1
DE3070959D1 DE8080304360T DE3070959T DE3070959D1 DE 3070959 D1 DE3070959 D1 DE 3070959D1 DE 8080304360 T DE8080304360 T DE 8080304360T DE 3070959 T DE3070959 T DE 3070959T DE 3070959 D1 DE3070959 D1 DE 3070959D1
Authority
DE
Germany
Prior art keywords
molten metal
inert gas
oxygen
gaseous mixture
remainder
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
DE8080304360T
Other languages
German (de)
English (en)
Inventor
Richard Paul Simmons
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22290722&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3070959(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Allegheny Ludlum Steel Corp filed Critical Allegheny Ludlum Steel Corp
Application granted granted Critical
Publication of DE3070959D1 publication Critical patent/DE3070959D1/de
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
    • C21C5/34—Blowing through the bath
    • 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
    • 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

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)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat Treatment Of Articles (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
DE8080304360T 1979-12-12 1980-12-03 Improved method of decarburizing molten metal Expired DE3070959D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/102,607 US4260415A (en) 1979-12-12 1979-12-12 Decarburizing molten metal

Publications (1)

Publication Number Publication Date
DE3070959D1 true DE3070959D1 (en) 1985-09-12

Family

ID=22290722

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080304360T Expired DE3070959D1 (en) 1979-12-12 1980-12-03 Improved method of decarburizing molten metal

Country Status (10)

Country Link
US (1) US4260415A (enExample)
EP (1) EP0030818B1 (enExample)
JP (1) JPS5693835A (enExample)
KR (1) KR850000874B1 (enExample)
AT (1) ATE14750T1 (enExample)
CA (1) CA1152336A (enExample)
DE (1) DE3070959D1 (enExample)
ES (1) ES8301505A1 (enExample)
NO (1) NO155938C (enExample)
ZA (1) ZA807331B (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6063307A (ja) * 1983-09-14 1985-04-11 Kawasaki Steel Corp 極低炭素鋼の転炉製鋼法
FR2560891B1 (fr) * 1984-03-09 1989-10-20 Air Liquide Procede d'affinage de la fonte
US4514220A (en) * 1984-04-26 1985-04-30 Allegheny Ludlum Steel Corporation Method for producing steel in a top-blown vessel
US4529443A (en) * 1984-04-26 1985-07-16 Allegheny Ludlum Steel Corporation System and method for producing steel in a top-blown vessel
US4615730A (en) * 1985-04-30 1986-10-07 Allegheny Ludlum Steel Corporation Method for refining molten metal bath to control nitrogen
DE10135597B4 (de) * 2001-07-20 2008-01-10 Wieland Electric Gmbh Klemmfeder
CN100439538C (zh) * 2007-02-15 2008-12-03 刘巍 低微碳锰铁合金的生产工艺

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941487C (de) * 1941-12-13 1956-04-12 Hoerder Huettenunion Ag Herstellung eines stickstoff- und phosphorarmen Thomasstahls
US3252790A (en) * 1956-06-27 1966-05-24 Union Carbide Corp Preparation of metals and alloys
BE610265A (enExample) * 1960-11-18
US3594155A (en) * 1968-10-30 1971-07-20 Allegheny Ludlum Steel Method for dynamically controlling decarburization of steel
US3832160A (en) * 1969-09-30 1974-08-27 Allegheny Ludlum Ind Inc Decarburizing molten steel
US3850617A (en) * 1970-04-14 1974-11-26 J Umowski Refining of stainless steel
US3741557A (en) * 1970-08-13 1973-06-26 Allegheny Ludlum Steel Apparatus for control of carbon content in steel produced in basic oxygen furnace process
BE789083A (fr) * 1971-10-06 1973-01-15 Uddeholms Ab Procede de reduction de la teneur de carbone dans des produits metallurgiques
US3798025A (en) * 1971-12-29 1974-03-19 Allegheny Ludlum Ind Inc Vacuum decarburization in rh and dh type degassing systems
US3754894A (en) * 1972-04-20 1973-08-28 Joslyn Mfg & Supply Co Nitrogen control in argon oxygen refining of molten metal
US3861888A (en) * 1973-06-28 1975-01-21 Union Carbide Corp Use of CO{HD 2 {B in argon-oxygen refining of molten metal
US3930843A (en) * 1974-08-30 1976-01-06 United States Steel Corporation Method for increasing metallic yield in bottom blown processes
FR2364975A1 (fr) * 1976-09-20 1978-04-14 Siderurgie Fse Inst Rech Procede d'elaboration, au convertisseur, d'acier inoxydable
US4139368A (en) * 1977-10-11 1979-02-13 Pennsylvania Engineering Corporation Metallurgical method

Also Published As

Publication number Publication date
EP0030818A3 (en) 1981-12-30
ES497629A0 (es) 1982-12-01
EP0030818B1 (en) 1985-08-07
JPS5693835A (en) 1981-07-29
JPS6325049B2 (enExample) 1988-05-24
NO155938B (no) 1987-03-16
US4260415A (en) 1981-04-07
NO803739L (no) 1981-06-15
KR830004436A (ko) 1983-07-13
ZA807331B (en) 1982-02-24
KR850000874B1 (ko) 1985-06-22
EP0030818A2 (en) 1981-06-24
ES8301505A1 (es) 1982-12-01
ATE14750T1 (de) 1985-08-15
NO155938C (no) 1987-06-24
CA1152336A (en) 1983-08-23

Similar Documents

Publication Publication Date Title
ES8107323A1 (es) Metodo de reducir y recuperar metal volatil de oxidos meta- licos
DE3070959D1 (en) Improved method of decarburizing molten metal
CA2072572A1 (en) Continuous production of iron-carbon alloy using iron carbide
US4830666A (en) Removal of nitrogen from iron
JPS56142815A (en) Refining method of stainless steel
US4521246A (en) Operating a blast furnace with the injection of hot reducing gases
EP0360954A3 (en) Method of melting cold material including iron
Simmons Decarburizing Molten Metal
US4436553A (en) Process to produce low hydrogen steel
Gupta et al. Process for Decarburizing Alloy Melts
Jiang et al. Study on the Dephosphorization of High-Manganese Steel(Mn 13) Under Reducing Atmosphere by Injection Process
JPS57169009A (en) Pretreatment of hot metal
JPS5644705A (en) Direct reducing method of ore in converter
Schwalm Method of Controlling Furnace Atmospheres
Luzgin Kinetic Laws Governing the Processes of Carbon Oxidation in Steelmaking Units
Mchlman Rapid Decarburization Steelmaking Process
Mantel et al. Method of Gas Carburizing
GB989993A (en) Method for the control of the refining by a stream of oxygen of carbon-containing metal melts
GB1471105A (en) Method and apparatus for producing iron from iron ore
Schleimer Process for Producing High Quality Steel
JPS56146805A (en) Operating method for blast furnace

Legal Events

Date Code Title Description
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee