間欠型交流磁場中に置かれた液体金属表面の外乱減衰挙動

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タイトル別名
  • Damping Behavior of Disturbance on Liquid Metal Surface Submerged in an Intermittent Alternating Magnetic Field
  • カンケツガタ コウリュウ ジバ チュウ ニ オカレタ エキタイ キンゾク ヒョウメン ノ ガイラン ゲンスイ キョドウ

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抄録

In several material processes, stability of the free surface of a molten metal is important for producing high quality materials. The imposition of magnetic field on a molten metal was introduced as a efficacious mean controlling the free surface of a molten metal. Several investigators have verified that static and high frequency magnetic fields enable the suppression of the disturbance given on the free surface of a molten metal. However, it is not clear whether an intermittent alternating magnetic field has the suppression function as well as the static and high frequency magnetic fields.<BR>In this work, the possibility of the suppression of the disturbance on free surface through the periodical wave motion excited by the intermittent alternating magnetic field has been explored in an experiment. The surface behavior of the molten gallium disturbed by the impact of a steel ball has been observed under the continuous or the intermittent alternating magnetic field. It has been found that the damping period of the disturbance under the imposition of the intermittent alternating magnetic field is shorter than those under the continuous alternating magnetic field and no magnetic field.

収録刊行物

  • 鉄と鋼

    鉄と鋼 85 (6), 427-431, 1999

    一般社団法人 日本鉄鋼協会

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