ヘッダを用いる電磁鋳造法によるアルミニウム合金鋳塊の表面品質の改良 Surface quality of aluminum ingot fabricated by electromagnetic casting by use of a header

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In order to improve the surface quality of ingots fabricated by an electromagnetic casting, a header which restrains the growth and the movement of oxide films was set on the side free surface of a molten metal constrained by an electromagnetic force. The shapes and the materials of the header were examined under aluminum alloy castings. It is noticed that an electrically conducting graphite header provided the better surface qualities regarding the roughness and the thickness of oxide films than an electrically insulating refractory header did. The electromagnetic force and the velocity distribution in a molten metal are numerically calculated and the surface qualities obtained in the experiment are discussed in relation with the numerical results. It is found that a contacting pressure between a molten metal and the header is larger in graphite header than that in the refractory one and the molten metal just below the side free surface flows upward in the graphite header and downward in the refractory one.

収録刊行物

  • 軽金属

    軽金属 47(3), 164-169, 1997-03-30

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10003795151
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    4172738
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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