薄肉球状黒鉛鋳鉄のCO_2レーザビーム CO_2 Laser Beam Drilling of Thin-Walled Spheroidal Graphite Cast Iron

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  CO<sub>2</sub> laser beam was applied to the drilling of thin-walled spheroidal graphite cast iron. The average drilled diameter was investigated by changing the functions of laser power, irradiation time, gas pressure and the type of assist gases used. The smallest average drilled diameter obtained was 0.31mm under the conditions as the laser power of 400W, irradiation time of 0.5s, gas pressure of 0.5kPa and assist gas oxygen. A heat-affected zone was always generated. This heat-affected zone was then heat treated also with CO<sub>2</sub> laser beam. The martensitic structure (800HV0.1) of the heat affecetd zone completely transformed into pearlite. A hardness of 300HV0.1 could be obtained under the conditions ; 700W, 0.5s, and 0.5kPa of assist gas oxygen. These results show that CO<sub>2</sub> laser beam drilling and subsequent heat treatment should serve as a new drilling process of spheroidal graphite cast iron, which reduces physical labor and improves working conditions in foundry industries.

収録刊行物

  • 鋳造工学 = Journal of Japan Foundry Engineering Society  

    鋳造工学 = Journal of Japan Foundry Engineering Society 68(4), 319-325, 1996-04-25 

    Japan Foundry Engineering Society

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各種コード

  • NII論文ID(NAID)
    10002113272
  • NII書誌ID(NCID)
    AN10514770
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13420429
  • NDL 記事登録ID
    3976350
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-277
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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