2022 Fiscal Year Final Research Report
Establishment of machinability improvable technique for ultra-precision diamond turning of steel by surface modification and heat treatment
| Project/Area Number |
18K03887
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 18020:Manufacturing and production engineering-related
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| Research Institution | Kansai University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
山口 智実 関西大学, システム理工学部, 教授 (10268310)
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| Project Period (FY) |
2018-04-01 – 2023-03-31
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| Keywords | 超精密切削 / ダイヤモンド工具 / 摩耗抑制 / 鋼 / 表面改質 / 熱処理 / ショットピーニング |
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| Outline of Final Research Achievements |
In ultra-precision cutting of ferrous materials, diamond tools are subject to severe wear. The purpose of this study is to obtain a guideline for practical machining by clarifying the mechanism of tool wear suppression. Based on the microstructure with better machinability, cutting experiments were conducted by varying the heat treatment conditions before carburizing and nitriding. In this study, we focused on stainless steels, which are highly effective in suppressing tool wear by nitriding. The following was found:
Shot peening before gas nitriding destroys the passive layer on the steel surface and increases the depth of the nitride layer that can be machined.
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| Free Research Field |
超精密加工
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| Academic Significance and Societal Importance of the Research Achievements |
本研究成果の学術的意義は，ダイヤモンド工具が著しく摩耗する鉄系材料の超精密切削において，実用的加工への展開の可能性を示せたところにある．一方，社会的意義としては，従来，鉄系材料の超精密切削に用いられてきた超音波振動切削が抱えてきた，切削速度と工具軌跡の制約を克服できる点にある．
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