JPS5690920A - Steel making method - Google Patents

Steel making method

Info

Publication number
JPS5690920A
JPS5690920A JP17013579A JP17013579A JPS5690920A JP S5690920 A JPS5690920 A JP S5690920A JP 17013579 A JP17013579 A JP 17013579A JP 17013579 A JP17013579 A JP 17013579A JP S5690920 A JPS5690920 A JP S5690920A
Authority
JP
Japan
Prior art keywords
blowing
under stirring
steel
converter
oxygen blowing
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
JP17013579A
Other languages
Japanese (ja)
Other versions
JPS5952921B2 (en
Inventor
Yujo Marukawa
Masaharu Anezaki
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 JP54170135A priority Critical patent/JPS5952921B2/en
Publication of JPS5690920A publication Critical patent/JPS5690920A/en
Publication of JPS5952921B2 publication Critical patent/JPS5952921B2/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

Landscapes

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

Abstract

PURPOSE:To make possible continuous casting of an ingot corresponding to rimmed steel by performing oxygen blowing in such a manner as to keep blowing-out carbon at less than predetermined amount and adding Al after refining under stirring thereby regulating O, Al, and Si contents. CONSTITUTION:Steel bath is put into such a converter into which gas can be introduced from below the bath surface and oxygen blowing is performed so that blowing-out carbon is kept at >=0.05%. At a proper time during oxygen blowing and after the oxygen blowing, an inert gas is introduced from below the steel bath surface, whereby refining under stirring is accomplished. After the refining under stirring, the molten steel is tapped from the converter into a ladle while the inclusion of the converter slag is being suppressed. During and/or after the tapping, Al is added and deoxidation is performed, whereby free oxygen is regulated to <=70ppm, total Al to <=0.020%, and Si to an unavoidable content. Thereby, an ingot which does not evolve CO and having no defects such as pinholes is stably and continuously cast.
JP54170135A 1979-12-25 1979-12-25 Steel manufacturing method Expired JPS5952921B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54170135A JPS5952921B2 (en) 1979-12-25 1979-12-25 Steel manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54170135A JPS5952921B2 (en) 1979-12-25 1979-12-25 Steel manufacturing method

Publications (2)

Publication Number Publication Date
JPS5690920A true JPS5690920A (en) 1981-07-23
JPS5952921B2 JPS5952921B2 (en) 1984-12-22

Family

ID=15899302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54170135A Expired JPS5952921B2 (en) 1979-12-25 1979-12-25 Steel manufacturing method

Country Status (1)

Country Link
JP (1) JPS5952921B2 (en)

Cited By (3)

* 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
JPS5834124A (en) * 1981-08-25 1983-02-28 Kawasaki Steel Corp Controlling method for content of nitrogen in killed steel
CN115011751A (en) * 2022-06-22 2022-09-06 包头钢铁（集团）有限责任公司 High manganese steel converter end point manganese alloying control method

Citations (2)

* 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
JPS5425209A (en) * 1977-07-27 1979-02-26 Sumitomo Metal Ind Ltd Method of producing super low carbon steel

Patent Citations (2)

* 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
JPS5425209A (en) * 1977-07-27 1979-02-26 Sumitomo Metal Ind Ltd Method of producing super low carbon steel

Cited By (4)

* 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
JPS5834124A (en) * 1981-08-25 1983-02-28 Kawasaki Steel Corp Controlling method for content of nitrogen in killed steel
CN115011751A (en) * 2022-06-22 2022-09-06 包头钢铁（集团）有限责任公司 High manganese steel converter end point manganese alloying control method
CN115011751B (en) * 2022-06-22 2023-08-25 包头钢铁（集团）有限责任公司 Endpoint manganese alloying control method for high manganese steel converter

Also Published As

Publication number Publication date
JPS5952921B2 (en) 1984-12-22

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