１５％ＳｉＣ粒子強化２６１８アルミニウム合金のＴｉＮコーティング溝なしタップによる加工性能

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タイトル別名
  • Performance of TiN coated flute-less tap on 15% SiC particle reinforced 2618 aluminum alloy tapping
  • 15パーセント SiC リュウシ キョウカ 2618 アルミニウム ゴウキン ノ TiN コーティング ミゾ ナシ タップ ニ ヨル カコウ セイノウ

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抄録

Machining processes such as drilling and tapping are necessary before MMC can be used as a machine parts. However, since MMC contains ultra-hard particles and short fibers machining is difficult due to the severe tool wear in cutting operations. Therefore in this study, an efficient machining method of the female screw which is essential for fastening machine parts is examined by subjecting the work piece material to plastic deformation and an attempt is made to tap MMC with fluteless tap that forms the female screw. Tapping tests on Al–15%SiC alloy were carried out using two types of fluteless taps HSS and TiN coated fluteless taps. The following conclusion can be drawn after examining results of the processing characteristics. The friction coefficient of the TiN coated tap is less than that of the HSS tap, due to the excellent wear resistance of the TiN coated tap processing resistance is small resulting in a 3.8 fold increase in tool life. The plastic flow evident during the formation of threads is small. As a result, with TiN coated tap, the work hardening of the thread surface is 35% lower than with HSS tap. It is evident that thread formation is efficiently performed.

収録刊行物

  • 軽金属

    軽金属 56 (6), 301-306, 2006

    一般社団法人 軽金属学会

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