浮遊帯溶融法による純鉄の精製

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  • 中村 衛
    大阪府立工業奨励館金属部熱処理課

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タイトル別名
  • On the Floating Zone Refining of Pure Iron
  • フユウタイ ヨウユウホウ ニ ヨル ジュンテツ ノ セイセイ

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抄録

Samples of vacuum-melted re-electrolysed iron were zone-refined by the floating-zone melting method in hydrogen gas, with the zone passed seven times at the velocity of 1.1 mm/min. Low-temperature resistivity measurements, quantovac analysis, and gas analysis were performed for estimating the refining effect and impurity distribution. The highest purity was found in the middle portion. This floating-zone refining method was effective for C, P and S, but we did not observe the refining effect for Mn and Si. O, N and H were eliminated effectively. The growth rate of the re-crystallized grains was markedly greater in the highest-purity part, and the ratio of the mean grain sizes of the pure and impure parts was 9:1.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 26 (6), 391-394, 1962

    公益社団法人 日本金属学会

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