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Development of crystallization controlled mold flux for continuous casting of steel

Research Project

Project/Area Number 25820376
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Metal making/Resorce production engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

WATANABE Takashi  東京工業大学, 物質理工学院, 助教 (70361780)

Project Period (FY) 2013-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords連続鋳造用フラックス / 結晶化 / カスピダイン / TTT図 / CCT図 / デンドライトアームスペーシング / 連続鋳造用モールドフラックス
Outline of Final Research Achievements

Crystallization behavior of mold fluxes for continuous casting of steel were examined using improved hot thermocouple technique preventing composition change of sample and effects of additive on cuspidine (3CaO.2SiO2.CaF2) crystallization were also examined.
Cuspidine precipitated as a dominant phase in a wide composition range in a quenched glass. while, crystallization from melt was occurred in accordance with phase diagram and the crystallization amount of cuspidine from melt was lower than that of precipitated. Appropriate amounts of additive promote cuspidine crystallization by lowering the melting point or viscosity of the slag, but excess addition causes reduction of cuspidine crystallization amount because of substitution reaction between fluorite (CaF2) and additive.

Report

(5 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (2 results)

All 2015 2013

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Effect of alkali oxide on cuspidine crystallization for CaO-SiO2-CaF2-R2O (R=Li, Na, K) slag2015

    • Author(s)
      Takashi WATANABE, Motoki KAKIZAKI, Miyuki HAYASHI
    • Organizer
      The International Congress on the Science and Technology of Steelmaking (ICS2015)
    • Place of Presentation
      中国,北京
    • Year and Date
      2015-05-11
    • Related Report
      2015 Research-status Report 2014 Research-status Report
    • Int'l Joint Research
  • [Presentation] CaO-SiO2-CaF2系スラグのカスピダイン結晶化におけるアルカリ金属酸化物同時添加の効果2013

    • Author(s)
      渡邊玄,柿崎元樹,林幸,永田和宏
    • Organizer
      一般社団法人日本鉄鋼協会第166回秋季講演大会
    • Place of Presentation
      金沢大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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