白銑の形態別酸素量におよぼす溶解条件の影響

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タイトル別名
  • Influence of the Melting Condition on the Oxygen Content of White Iron
  • ハクセン ノ ケイタイ ベツ サンソリョウ ニ オヨボス ヨウカイ ジョウケン ノ エイキョウ

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抄録

The determination of oxygen in white iron was performed using a modified apparatus used in chlorine method. This method gives results in good agreement with those of vacuum-fusion method. Ferro-silicon was added to the iron-carbon (3%) melt for the purpose of preparing iron containing 3% carbon and 1% silicon. The oxygen content as FeO was independent from the holding temperature when the holding time of the melt after addition of ferro-silicon was shorter than 15 min, and the content approached the value caluculated from thermodynamic data on the equilibrium of iron-carbon (3%)-silicon (1%)-oxygen melt. When the holding time was longer than 20 min, the FeO content increased to supersaturated values and the SiO2 content increased with prolongation of the time. This phenomenon was not observed when the melt was held at high temperatures.

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