The Influence of Free Machining Additives-S, Pb, Te and Ca-on the Machinability in Gear Hobbing

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  • ホブ切り性におよぼす快削元素Ｓ，Ｐｂ，ＴｅおよびＣａの影響
  • ホブキリセイ ニ オヨボス カイサク ゲンソ S,Pb,Te オヨビ Ca ノ

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Abstract

The authors examined the influence of free machining additives in gear hobbing of chromium molybdenum steels with non-coated or TiN-coated HSS tools and obtained the following results.<br>(1) The free machining additives sulfur, lead and tellurium increase the hob tool life, and sulfur and tellurium are more effective for it than lead.<br>(2) Calcium is effective for only TiN-coated hob but it is not for non-coated hob.<br>(3) Surface roughness of machined gear teeth is improved by adding sulfur, lead, tellurium and calcium.

Journal

  • DENKI-SEIKO

    DENKI-SEIKO 55 (3), 155-161, 1984

    Daido Steel Co., Ltd.

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