アルミニウム合金溶接管の揺動回転口広げ成形限界 Flaring limit of aluminum alloy welded tube by orbital rotary forming

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In order to improve the flaring limit of welded tubes, specimens of 5154 commercial aluminum alloy welded tube were flared to conical shapes with various half-apex angle by orbital rotary forming process, and these deformation phenomena were experimentally investigated. Experimental results showed that flaring limits are determined by the onset of cracking which propagates through the welded line from edge to root in flared tube-end. It is found that the flaring limit in orbital rotary forming is higher than that in press forming with conical dies, and that the formation of the crack can be avoided in the flaring operation by increasing inclined angle of tool and decreasing equivalent tool diameter. Improvements of the flaring limits are also observed in limiting the feed range, <i>f</i>≥<i>f</i><sub>c</sub>, in which the flaring limit increases with decreasing <i>f</i>, and has maxima at <i>f</i><sub>c</sub>; for <i>f</i> below <i>f</i><sub>c</sub>, decrease in the flaring limit is caused by the low-cycle fatigue effect.

収録刊行物

  • 軽金属

    軽金属 47(7), 391-395, 1997-07-30

    The Japan Institute of Light Metals

参考文献:  2件中 1-2件 を表示

  • <no title>

    北澤君義

    塑性と加工 29, 767, 1988

    被引用文献4件

  • <no title>

    北澤君義

    日本機械学会論文集C編 57, 2453, 1991

    被引用文献2件

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10003795706
  • 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
    4258126
  • 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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