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JPS5662662A - Molten steel heat insulating method of less carburization - Google Patents

Molten steel heat insulating method of less carburization

Info

Publication number
JPS5662662A
JPS5662662A JP13791179A JP13791179A JPS5662662A JP S5662662 A JPS5662662 A JP S5662662A JP 13791179 A JP13791179 A JP 13791179A JP 13791179 A JP13791179 A JP 13791179A JP S5662662 A JPS5662662 A JP S5662662A
Authority
JP
Japan
Prior art keywords
molten steel
molten
heat insulating
low carbon
steel
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.)
Pending
Application number
JP13791179A
Other languages
Japanese (ja)
Inventor
Toshiaki Ohira
Akira Nobemoto
Hideki Yamauchi
Kishio Mochinaga
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 JP13791179A priority Critical patent/JPS5662662A/en
Publication of JPS5662662A publication Critical patent/JPS5662662A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE:To provide carburization preventing characteristic besides heat retaining characteristic and oxidation preventing characteristic of molten steel, in the production of a low carbon steel, by forming a molten shielding layer of low carbon between the molten steel heat insulating agent and molten steel surface in a ladle or tundish. CONSTITUTION:The molten low carbon steel 2 in a ladle 1 is poured from a lower nozzle 3 into a tundish 5, and the molten steel 6 therein is poured from an immersion nozzle 10 into a mold 11 to become an ingot 12. Here, the molten steel 6 is heat-insulated by a tundish cover 4, but since this is insufficient, a molten low carbon slag layer 9 is formed on the surface of the molten steel 6 by powder for oxidation prevension of molten steel (for example, 50% CaO, 45% SiO2, 3% Al2O3, 1% MgO, 0.5% C, and 0.5% others, m.p. 1,460 deg.C). A layer of a heat insulating material of low bulk density (for example, 40% SiO2, 15% Al2O3, 20% MgO, 5% Fe2O3, 10% H2O, and others 10% vermiculite) is formed thereon.
JP13791179A 1979-10-25 1979-10-25 Molten steel heat insulating method of less carburization Pending JPS5662662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13791179A JPS5662662A (en) 1979-10-25 1979-10-25 Molten steel heat insulating method of less carburization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13791179A JPS5662662A (en) 1979-10-25 1979-10-25 Molten steel heat insulating method of less carburization

Publications (1)

Publication Number Publication Date
JPS5662662A true JPS5662662A (en) 1981-05-28

Family

ID=15209555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13791179A Pending JPS5662662A (en) 1979-10-25 1979-10-25 Molten steel heat insulating method of less carburization

Country Status (1)

Country Link
JP (1) JPS5662662A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074036A1 (en) * 1981-08-28 1983-03-16 Nippon Steel Corporation Process for producing steel for an electrical steel sheet
FR2674156A1 (en) * 1991-03-22 1992-09-25 Daussan & Co Powdered, insulating and purifying coating for receiving the liquid metal from a metallurgical vessel, and method relating thereto
WO2003033746A1 (en) * 2001-10-12 2003-04-24 Thyssenkrupp Stahl Ag Method for the production of non-grain oriented electric sheets
KR100417692B1 (en) * 1999-12-29 2004-02-11 주식회사 포스코 Floating type closing device for oxidation free casting
KR100594682B1 (en) 2004-06-08 2006-06-30 호진산업(주) Ladle thermal insulation ultra low carbon insulation
KR100971362B1 (en) 2007-11-01 2010-07-20 주식회사 포스코 Sealing device for applying tundish water insulator for oxidation free casting
CN102581240A (en) * 2011-01-11 2012-07-18 宝山钢铁股份有限公司 Tundish covering flux
KR101239536B1 (en) * 2010-12-08 2013-03-06 주식회사 포스코 Adiabatic keeping warm stuff for ladle and method for keeping warm of molten steel using the same
JP2014031561A (en) * 2012-08-06 2014-02-20 Nippon Steel & Sumitomo Metal Heat insulator input method in ladle and heat insulator input device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074036A1 (en) * 1981-08-28 1983-03-16 Nippon Steel Corporation Process for producing steel for an electrical steel sheet
FR2674156A1 (en) * 1991-03-22 1992-09-25 Daussan & Co Powdered, insulating and purifying coating for receiving the liquid metal from a metallurgical vessel, and method relating thereto
US5332418A (en) * 1991-03-22 1994-07-26 Daussan Et Compagnie Covering for molten metal and process for producing the same
KR100417692B1 (en) * 1999-12-29 2004-02-11 주식회사 포스코 Floating type closing device for oxidation free casting
WO2003033746A1 (en) * 2001-10-12 2003-04-24 Thyssenkrupp Stahl Ag Method for the production of non-grain oriented electric sheets
KR100594682B1 (en) 2004-06-08 2006-06-30 호진산업(주) Ladle thermal insulation ultra low carbon insulation
KR100971362B1 (en) 2007-11-01 2010-07-20 주식회사 포스코 Sealing device for applying tundish water insulator for oxidation free casting
KR101239536B1 (en) * 2010-12-08 2013-03-06 주식회사 포스코 Adiabatic keeping warm stuff for ladle and method for keeping warm of molten steel using the same
CN102581240A (en) * 2011-01-11 2012-07-18 宝山钢铁股份有限公司 Tundish covering flux
JP2014031561A (en) * 2012-08-06 2014-02-20 Nippon Steel & Sumitomo Metal Heat insulator input method in ladle and heat insulator input device

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