JPS5696012A - Steel making method - Google Patents

Steel making method

Info

Publication number
JPS5696012A
JPS5696012A JP17090479A JP17090479A JPS5696012A JP S5696012 A JPS5696012 A JP S5696012A JP 17090479 A JP17090479 A JP 17090479A JP 17090479 A JP17090479 A JP 17090479A JP S5696012 A JPS5696012 A JP S5696012A
Authority
JP
Japan
Prior art keywords
steel
molten
disoxidation
thence
converter
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
JP17090479A
Other languages
Japanese (ja)
Other versions
JPS5952922B2 (en
Inventor
Yujo Marukawa
Yoshiyasu Shirota
Tsutomu Kajimoto
Akinori Yoshida
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP54170904A priority Critical patent/JPS5952922B2/en
Publication of JPS5696012A publication Critical patent/JPS5696012A/en
Publication of JPS5952922B2 publication Critical patent/JPS5952922B2/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To produce a steel corresponding to a rimmed steel without producing any bubble in a continuous casting process by desilicating molten iron, charging the same into a converter, and carrying out oxygen blowing and refining under stirring while adding a slagging agent then subjecting the same to disoxidation through Al addition. CONSTITUTION:Molten steel is desilicated, if necessary, in a manner that Si is kept at <=0.3%, and this is charged into a converter. Thence, oxygen blowing is carried out, and at a suitable time, refining under stirring is carried out while a slagging agent is being added. Thence, steel is tapped, to which Al is added and this steel is subjected to disoxidation, whereby the molten steel of <=70ppm free [O], <=0.020% T[Al], and un unavoidable content Si is made. If this molten steel is continuously cast, the ingot corresponding to a rimmed steel having no defects like pinholes is obtained at a high yield and high performance.
JP54170904A 1979-12-28 1979-12-28 Steel manufacturing method Expired JPS5952922B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54170904A JPS5952922B2 (en) 1979-12-28 1979-12-28 Steel manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54170904A JPS5952922B2 (en) 1979-12-28 1979-12-28 Steel manufacturing method

Publications (2)

Publication Number Publication Date
JPS5696012A true JPS5696012A (en) 1981-08-03
JPS5952922B2 JPS5952922B2 (en) 1984-12-22

Family

ID=15913482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54170904A Expired JPS5952922B2 (en) 1979-12-28 1979-12-28 Steel manufacturing method

Country Status (1)

Country Link
JP (1) JPS5952922B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5763619A (en) * 1980-10-06 1982-04-17 Nippon Kokan Kk <Nkk> Production of continuous cast steel
JP2007277669A (en) * 2006-04-10 2007-10-25 Nippon Steel Corp Method for desulfurizing molten iron

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1284155A (en) * 1961-02-15 1962-02-09 Ct Nat De Rech S Metallurg A S Method and installation for controlling the effervescence and calming of steel in continuous casting and steel in accordance with that obtained by said process or similar process
JPS52127421A (en) * 1976-04-19 1977-10-26 Nisshin Steel Co Ltd Primary treatment of molten pig iron for converter process
JPS5425209A (en) * 1977-07-27 1979-02-26 Sumitomo Metal Ind Ltd Method of producing super low carbon steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1284155A (en) * 1961-02-15 1962-02-09 Ct Nat De Rech S Metallurg A S Method and installation for controlling the effervescence and calming of steel in continuous casting and steel in accordance with that obtained by said process or similar process
JPS52127421A (en) * 1976-04-19 1977-10-26 Nisshin Steel Co Ltd Primary treatment of molten pig iron for converter process
JPS5425209A (en) * 1977-07-27 1979-02-26 Sumitomo Metal Ind Ltd Method of producing super low carbon steel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5763619A (en) * 1980-10-06 1982-04-17 Nippon Kokan Kk <Nkk> Production of continuous cast steel
JP2007277669A (en) * 2006-04-10 2007-10-25 Nippon Steel Corp Method for desulfurizing molten iron

Also Published As

Publication number Publication date
JPS5952922B2 (en) 1984-12-22

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