Cutting characteristics of difficult-to-machine materials by TiCN-Coated end mills deposited by UBMS method

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  • UBMS法によるTiCNコーティング工具の難削材切削特性
  • UBMS法によるTiCNコーティング工具の難削材切削特性 : カーボン添加方法の影響
  • UBMSホウ ニ ヨル TiCN コーティング コウグ ノ ナンサクザイ セッサク トクセイ : カーボン テンカ ホウホウ ノ エイキョウ
  • —Examination of the carbon addition method—
  • —カーボン添加方法の影響—

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Abstract

The UBMS (UnBalanced Magnetron Sputtering) method is applied to coated end mills, and various types of such tools are used in high-speed milling of SUS304. This coating film was designed to improve lubrication ability rather than heat resistance. In this paper, the influence of carbon addition method (graphite sputtering, CH4 gas, and C2H2 gas) on the mechanical properties and structure of the coating film was clarified. TiCN film deposited by the UBMS method using CH4 gas has a smooth surface and low coefficient of friction, and this structure acts as a lubricant as well as other films. Low cutting force and long tool life are obtained with CH4-type TiCN-coated end mills compared to standard commercially available coated end mills in high-speed side milling without coolant.

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