高速度鋼の窒化処理について

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タイトル別名
  • On the Nitriding Treatment of High Speed Steel
  • コウソクド コウ ノ チッカ ショリ ニ ツイテ

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抄録

In order to improve the cutting durability of high speed steel, specimens were nitrided in commercial liquid nitrizer NS350, and examined for the hardness distribution of nitrided case, the micro-structure, the toughness and the cutting durability. As the results, the proper nitriding temperature was found to range between 500∼570°C and in this case 30∼60 min is recommended for dipping time. The depth of nitrided case obtained by the above treatment were different by specification of the specimens, standing in the range of 0.03∼0.06 mm. Case hardness was over 1200 in Vickers-Hardness number at quenched and tempered conditions. The results of tool life tests showed that nitriding of high speed steel is very effective to improve the cutting durabilities of both drills and single point tools.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (7), 429-432, 1960

    公益社団法人 日本金属学会

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