JPS569317A - Manufacture of low oxygen and low sulfur steel with controlled shape of sulfide - Google Patents

Manufacture of low oxygen and low sulfur steel with controlled shape of sulfide

Info

Publication number
JPS569317A
JPS569317A JP8393079A JP8393079A JPS569317A JP S569317 A JPS569317 A JP S569317A JP 8393079 A JP8393079 A JP 8393079A JP 8393079 A JP8393079 A JP 8393079A JP S569317 A JPS569317 A JP S569317A
Authority
JP
Japan
Prior art keywords
low
molten steel
steel
sulfide
blown
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
JP8393079A
Other languages
Japanese (ja)
Other versions
JPS5922765B2 (en
Inventor
Kaname Wada
Shigeaki Hagibayashi
Ryoji Tsujino
Shigeo Tsuruoka
Kensuke Shimomura
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
Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP8393079A priority Critical patent/JPS5922765B2/en
Publication of JPS569317A publication Critical patent/JPS569317A/en
Publication of JPS5922765B2 publication Critical patent/JPS5922765B2/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
    • C21C7/064—Dephosphorising; Desulfurising

Landscapes

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

Abstract

PURPOSE:To manufacture a low-oxygen and low-sulfur steel by a procedure in which a CaO-containing flux is blown into a deoxidized molten steel in a ladle for further deoxidization and desulfurization and then a Ca-alloy is blown into the molten steel to control the shape of sulfide present in the molten steel. CONSTITUTION:A molten steel from a steel-making furnace is deoxidized by means of Al, Fe-Si alloy, Fe-Mn alloy, etc., and then a CaO-containing flux is blown into the molten steel by means of an inert gas, e.g., Ar gas, etc., for further deoxidization and desulfurization. Then, a Ca alloy is blown into the molten steel to suppress the formation of MnS and also to form a spherical inclusion of calcium aluminate sulfide. thus, a low oxygen and low sulfur steel which is excellent in toughness and resistance to hydrogen fracture can be positively obtained.
JP8393079A 1979-07-04 1979-07-04 Manufacturing method for low-oxygen, low-sulfur steel that controls sulfide formation Expired JPS5922765B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8393079A JPS5922765B2 (en) 1979-07-04 1979-07-04 Manufacturing method for low-oxygen, low-sulfur steel that controls sulfide formation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8393079A JPS5922765B2 (en) 1979-07-04 1979-07-04 Manufacturing method for low-oxygen, low-sulfur steel that controls sulfide formation

Publications (2)

Publication Number Publication Date
JPS569317A true JPS569317A (en) 1981-01-30
JPS5922765B2 JPS5922765B2 (en) 1984-05-29

Family

ID=13816305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8393079A Expired JPS5922765B2 (en) 1979-07-04 1979-07-04 Manufacturing method for low-oxygen, low-sulfur steel that controls sulfide formation

Country Status (1)

Country Link
JP (1) JPS5922765B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583913A (en) * 1981-07-01 1983-01-10 Nippon Steel Corp Production of low hydrogen steel by which form of sulfide is controlled
JPS6184315A (en) * 1984-09-28 1986-04-28 Nippon Kokan Kk <Nkk> Molten steel ladle refining method
JPS6233741A (en) * 1985-08-05 1987-02-13 Kobe Steel Ltd Manufacture of ca-treated steel
KR101121105B1 (en) 2004-12-29 2012-03-19 주식회사 포스코 Refining method for preventing corner crack

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636096A4 (en) * 1992-04-17 1996-08-21 Imp Packaging Inc Carriers of multiples of flanged containers.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583913A (en) * 1981-07-01 1983-01-10 Nippon Steel Corp Production of low hydrogen steel by which form of sulfide is controlled
JPS6184315A (en) * 1984-09-28 1986-04-28 Nippon Kokan Kk <Nkk> Molten steel ladle refining method
JPS6233741A (en) * 1985-08-05 1987-02-13 Kobe Steel Ltd Manufacture of ca-treated steel
KR101121105B1 (en) 2004-12-29 2012-03-19 주식회사 포스코 Refining method for preventing corner crack

Also Published As

Publication number Publication date
JPS5922765B2 (en) 1984-05-29

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