BR112012013501A2 - surface temperature maintenance agent for cast steel and method for surface temperature maintenance of cast steel - Google Patents

surface temperature maintenance agent for cast steel and method for surface temperature maintenance of cast steel

Info

Publication number
BR112012013501A2
BR112012013501A2 BR112012013501A BR112012013501A BR112012013501A2 BR 112012013501 A2 BR112012013501 A2 BR 112012013501A2 BR 112012013501 A BR112012013501 A BR 112012013501A BR 112012013501 A BR112012013501 A BR 112012013501A BR 112012013501 A2 BR112012013501 A2 BR 112012013501A2
Authority
BR
Brazil
Prior art keywords
surface temperature
cast steel
agent
temperature maintenance
range
Prior art date
Application number
BR112012013501A
Other languages
Portuguese (pt)
Other versions
BR112012013501B1 (en
BR112012013501A8 (en
Inventor
Daisuke Miki
Norihiko Uchiyama
Toshiaki Mizoguchi
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
Publication of BR112012013501A2 publication Critical patent/BR112012013501A2/en
Publication of BR112012013501A8 publication Critical patent/BR112012013501A8/en
Publication of BR112012013501B1 publication Critical patent/BR112012013501B1/en

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
    • B22D11/108—Feeding additives, powders, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • 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
    • B22D11/111—Treating the molten metal by using protecting powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/10—Hot tops therefor
    • 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
    • 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
    • C21C7/005—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using exothermic reaction compositions

Landscapes

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

Abstract

agente para manutenção da temperatura da superfície do aço fundido e método para manutenção da temperatura da superfície do aço fundido. a presente invenção refere-se a um agente para manutenção da temperatura de uma superfície de um aço fundido, que é disposto em uma superfície do aço fundido tendo uma temperatura predeterminada, o agente incluindo: uma matéria-prima de baixo ponto de fusão tendo uma temperatura de fusão menor que a temperatura da superfície do aço fundido, a quantidade dessa matéria-prima de baixo ponto de fusão sendo não menos que 50% em massa, e uma matéria-prima de alto ponto de fusão tendo uma temperatura de fusão maior que a temperatura da superfície do aço fundido, a quantidade dessa matéria-prima de alto ponto de fusão sendo menor que 50% em massa, e cao na faixa de 10 a 60% m massa, al~ 2~o~ 3~ na faixa de 10 a 70% em massa, mgo na faixa de 3 a 30% em massa, e sio~ 2~ na faixa de 0 a 10% em massa, cuja soma total é não menos que 70% em massa, na qual a razão cao/al~ 2~o~ 3~ do cao em relação ao al~ 2~o~ 3~ cai na faixa de 0,5 a 2,0, o agente tem uma temperatura de fusão menor que a temperatura da superfície do aço fundido, e não menos que 70% em massa do agente são formados de pó tendo um diâmetro de partícula na faixa de 200 <109>m a 1000 <109>m.agent for maintaining surface temperature of cast steel and method for maintaining surface temperature of cast steel. The present invention relates to an agent for maintaining the surface temperature of a molten steel which is disposed on a surface of the molten steel having a predetermined temperature, the agent including: a low melting point raw material having a melting temperature lower than the surface temperature of the cast steel, the amount of such low melting point raw material being not less than 50% by mass, and a high melting point raw material having a melting temperature greater than the surface temperature of the molten steel, the quantity of this high melting point raw material being less than 50% by mass, and the range of 10 to 60% by mass, and ~ 2 ~ o ~ 3 ~ in the range of 10 to 70% by mass, ranging from 3 to 30% by weight, and ~ 2 ~ in the range from 0 to 10% by weight, the sum of which is not less than 70% by weight, in which the ratio is / al ~ 2 ~ o ~ 3 ~ of the dog relative to al ~ 2 ~ o ~ 3 ~ falls in the range of 0.5 to 2.0, the agent has a temperature of Melting less than the surface temperature of the molten steel, and not less than 70% by weight of the agent are formed of dust having a particle diameter in the range of 200 a m to 1000 10 m.

BR112012013501-5A 2009-12-10 2010-12-10 AGENT FOR MAINTENANCE OF THE SURFACE TEMPERATURE OF THE CAST STEEL AND METHOD FOR MAINTENANCE OF THE SURFACE TEMPERATURE OF THE CAST STEEL BR112012013501B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009280205 2009-12-10
JP2009-280205 2009-12-10
PCT/JP2010/072211 WO2011071141A1 (en) 2009-12-10 2010-12-10 Agent for maintaining surface temperature of molten steel and method for maintaining surface temperature of molten steel

Publications (3)

Publication Number Publication Date
BR112012013501A2 true BR112012013501A2 (en) 2016-05-31
BR112012013501A8 BR112012013501A8 (en) 2017-10-17
BR112012013501B1 BR112012013501B1 (en) 2019-06-25

Family

ID=44145684

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012013501-5A BR112012013501B1 (en) 2009-12-10 2010-12-10 AGENT FOR MAINTENANCE OF THE SURFACE TEMPERATURE OF THE CAST STEEL AND METHOD FOR MAINTENANCE OF THE SURFACE TEMPERATURE OF THE CAST STEEL

Country Status (5)

Country Link
JP (1) JP4855552B2 (en)
KR (1) KR20120080250A (en)
CN (1) CN102762320B (en)
BR (1) BR112012013501B1 (en)
WO (1) WO2011071141A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105108089A (en) * 2015-07-31 2015-12-02 铜陵市大明玛钢有限责任公司 Preparation method for molten steel surface heat preservation agent
CN105200186A (en) * 2015-09-02 2015-12-30 铜陵翔宇商贸有限公司 Preparing method for liquid steel surface heat preserving agent
CN114262765A (en) * 2021-12-23 2022-04-01 上海盛宝冶金科技有限公司 Environment-friendly tundish molten steel heat-insulating agent and preparation method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0233467B2 (en) * 1988-06-16 1990-07-27 Yoshizawa Sekkai Kogyo Kk KINZOKUYOYUHOONZAITOSONOSEIZOHOHO
CN1063432A (en) * 1991-01-26 1992-08-12 黄胜利 Heat preserving agent for liquid steel
JP2991879B2 (en) * 1992-12-02 1999-12-20 新日本製鐵株式会社 Liquid steel surface heat insulator
JPH10263768A (en) * 1997-03-24 1998-10-06 Sumitomo Metal Ind Ltd Method for reusing converter slag
CN1064085C (en) * 1998-07-16 2001-04-04 江苏江南铁合金厂 Agent for refining and heat-insulating of molten steel surface and its preparation process
JP4786252B2 (en) * 2005-01-11 2011-10-05 新日本製鐵株式会社 Molten steel insulation

Also Published As

Publication number Publication date
JPWO2011071141A1 (en) 2013-04-22
CN102762320B (en) 2015-04-22
KR20120080250A (en) 2012-07-16
CN102762320A (en) 2012-10-31
BR112012013501B1 (en) 2019-06-25
WO2011071141A1 (en) 2011-06-16
BR112012013501A8 (en) 2017-10-17
JP4855552B2 (en) 2012-01-18

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Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved

Owner name: NIPPON STEEL AND SUMITOMO METAL CORPORATION (JP)

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/12/2010, OBSERVADAS AS CONDICOES LEGAIS. (CO) 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/12/2010, OBSERVADAS AS CONDICOES LEGAIS

B25D Requested change of name of applicant approved

Owner name: NIPPON STEEL CORPORATION (JP)