鋳鉄溶湯性状とチル臨界冷却速度の関係

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タイトル別名
  • Relation between Molten Cast Iron and Critical Cooling Rate for Chilling Tendency
  • チュウテツ ヨウトウ セイジョウ ト チル リンカイ レイキャク ソクド ノ カンケイ

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抄録

  One main raw material in cast iron melting is steel scrap. The source is chiefly the automotive steel sheet. Because the use rate of high tensile strength steel sheet and surface heated steel sheet increases, a small amount of elements which may affect the mechanical properties of cast iron will be contained as molten cast iron. Consequently, the melting properties of the molten cast iron may have changed considerably. In this study, the relations between molten cast iron and different contents of small amounts of graphitizer (∑G) and stabilizer (∑R) elements newly defined in this research were investigated.<br>  The results clarified that there is excellent correlation between the undercooling degree of eutectic solidification (Δα) and the critical cooling rate for the chilling tendency (Rc). In high purity molten cast iron containing a small amount of ∑G and ∑R, numerous findings were obtained, such as the Rc increase with the marked decrease in undercooling with inoculation.<br>  Rc is therefore considered to be a potential parameter for evaluating the molten cast iron by comparing ∑G and ∑R.

収録刊行物

  • 鋳造工学

    鋳造工学 73 (4), 237-241, 2001

    公益社団法人 日本鋳造工学会

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