アルミニウム押出ビレット表層の変形挙動に及ぼす押出方法およびダイス形状の影響 Effect of extrusion mode and die shape on billet skin behavior in aluminum extrusion

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抄録

Study on metal flow in extrusion billet is fundamental and useful to understand extrusion technology. In particular, knowing the behavior of skin of extrusion billet is indispensable to maintain qualities of extrusions. In order to investigate its behavior, extrusion experiments of clad billet and the FE analysis by DEFORM-2D<sup>TM</sup> were performed. The calculated behavior of billet skin was similar to that in experiment. It was considered that the results of FE analysis were acceptable to estimate the actual behavior of metal flow in extrusion. The billet skin penetrated the core in indirect extrusion and it was piled up at the back end of billet in direct extrusion. Slight dead metal zone appeared on the outer side of die face in indirect extrusion. Shear zone appeared between dead metal zone and flow zone in direct extrusion. Moreover, die semi-angle affected the behavior of billet skin in direct extrusion. 70 degree semi-angle die restrained billet skin from entering extruded product compared with 90 or 110 degree semi-angle die.

収録刊行物

  • 軽金属  

    軽金属 58(5), 183-188, 2008-05-30 

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10021989165
  • 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
    9536060
  • 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  CJP引用  NDL  J-STAGE 
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