フェライト系快削ステンレス鋼ＳＵＳ４３０Ｆの各種特性に及ぼすＭｎ／Ｓ比の影響とＨＤＤ用ステンレス鋼の開発

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タイトル別名
  • Influence of Mn/S on the Outgas Property and the Machinability of Type 430F and Development of a New Free-machining Ferritic Stainless Steel for HDD Components.
  • フェライトケイカイサクステンレス コウ SUS430F ノ カクシュ トクセイ ニ オヨボス Mn Sヒ ノ エイキョウ ト HDDヨウ ステンレス コウ ノ カイハツ

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説明

The influence of Mn/S on the outgas property and the machinability of type 430F has been investigated and the following results were obtained. 1) The degree of outgas decreased with Mn/S because of enhancement of the chemical stability of sulfide by substitution of Cr for Mn in sulfide. 2) The machinability in turning and drilling decreased with Mn/S. The reasons have been suggested that the aspect ratio of sulfide got larger and also the hardness of sulfide increased with Cr contents in sulfide. On the basis of the above results, a new free-machining ferritic stainless steel, DHS1 has been developed for hard disk drives, which has 19Cr-0.35Mn-0.26S+Pb, Te ;mass%. This advanced steel is superior in machinability and corrosion resistance to type 430F and also has low outgas emissivity.

収録刊行物

  • 電気製鋼

    電気製鋼 70 (3), 197-203, 1999

    大同特殊鋼株式会社

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