球状黒鉛鋳鉄の流動性に及ぼすけい素量の影響

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書誌事項

タイトル別名
  • Effects of Silicon Content on Fluidity of Spheroidal Graphite Cast Iron
  • キュウジョウ コクエン チュウテツ ノ リュウドウセイ ニ オヨボス ケイソリ

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抄録

  The fluidity of spheroidal graphite cast iron was measured using a vacuum fluidity test equipment. The movement of flowing molten iron was dynamically recorded by means of a high speed camera. A linear relationship was obtained between fluidty length and tube diameter or the square root suction pressure. Fluidity length increased with increasing Si content up to 3.2 %, near the eutectic point, whereas over 3.5 % Si, it decreased with increasing Si content. From a dynamic observation of metal flow, flow life was changed by Si content. It was the longest near the eutectic point because superheat increased. Critical pressure necessary for initiating flow increased with increasing Si content. Microstructures within the fluidity specimens have been classified into three regions ; ledeburite, mottle and spheroidal graphite. Each region length changed by Si content. The ledeburite region decreased with increasing Si content.

収録刊行物

  • 鋳物

    鋳物 67 (5), 312-317, 1995

    公益社団法人 日本鋳造工学会

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