超高張力鋼板の熱間プレス成形における酸化防止 Prevention of Oxidation in Hot Stamping of Ultra High Strength Steel Sheets

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Oxidation in hot stamping of ultra high strength steel sheets was prevented by coating the sheets with an oxidation preventive oil. Solid films having oxidation barriers are generated on the surfaces of steel sheets by drying the coated sheets. For four types of oxidation preventive oil, the amount of oxide scale under natural cooling of each heated sheet without forming was first measured. The oil that forms a liquefied film at elevated temperatures exhibited high oxidation prevention during heating, and this oil was chosen for a hot bending experiment. Hot hat-shaped bending of the coated sheets was carried out to examine the properties of the products. For the bent products, the shape accuracy was very high, the surface roughness was similar to that of the sheet, and the hardness was 1.5 times larger than that of the sheet before the bending. In addition, the load required for hot bending decreases markedly. The film remaining on the surface of the formed product could be removed using phosphoric acid. It was found that the hot stamping operation using the oxidation preventive oil is effective in the precision forming of ultra high strength steel sheets.

収録刊行物

  • 塑性と加工 = JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY  

    塑性と加工 = JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY 48(555), 318-322, 2007-04-25 

    The Japan Society for Technology of Plasticity

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各種コード

  • NII論文ID(NAID)
    10018418033
  • NII書誌ID(NCID)
    AN00135062
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00381586
  • NDL 記事登録ID
    8802314
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-218
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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