Clarification of adhesion mechanism of oxide protective film (Belag) and development of active utilization method

• Project/Area Number: 23560124
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Shimane University
• Principal Investigator: USUKI Hiroshi 島根大学, 総合理工学研究科(研究院), 教授 (10176670)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 工作機械・生産工学 / Belag / 工具摩耗抑制 / 切削加工 / 摩耗抑制 / 酸化物 / ミスト / Belag生成 / MQL

Research Abstract

It has been investigated for Belag (oxide protective film) formation interface, and the utilization of the results has been considered. Major following results were obtained.
1. It was found that Belag adhere without the reaction layer on the worn surface selectively by thermoelectromotive force generated during cutting, and adhere directly to the Ti compounds. This is why it does not form on the carbide K grade. Then, FeO is concentrated at the interface when cutting time becomes longer, leading to wear by diffusion reaction. 2. When machined the Ca deoxidized steel, including MnS, CaS layer occurs in Belag bond interface. As the result, tool life prolongation will be possible by preventing the concentration of FeO. 3. Differences were observed in the adhesion by the mineral water mist machining and the crystal orientation of the coating film. Potential as a method for reducing adhesion of workpiece has been found, including non-ferrous materials that results in severe adhesion.

Research Products

• [Presentation] Behaviour of MnS on Belag Formation and Observation on Carbide Tool (2014)
  • Author(s): Teruyuki Matsui, Hiroshi Usuki, Masahiro Yoshinobu, Shogo Nakashima, Kana Morishita, Kenichi Inoue, Takashi Kano, Makoto Haritani, Masahiro Hagino, Yasuo Yamane
  • Organizer: International Conference on Machining, Materials and Mechanical Technology (JSPE)
  • Place of Presentation: NTUH International Convention Center(発表予定およびKey Engineering Materials誌へ投稿予定)
• [Presentation] Behaviour of MnS on Belag Formation and Observation on Carbide Tool (2014)
  • Author(s): Teruyuki Matsui, Hiroshi Usuki, Masahiro Yoshinobu, Shogo Nakashima, Kana Morishita, Kenichi Inoue, Takashi Kano, Makoto Haritani, Masahiro Hagino, Yasuo Yamane
  • Organizer: 1st International Conference on Machining, Materials and Mechanical Technology
  • Place of Presentation: NTUH International Convention Center(中華民国（台湾））
• [Presentation] Observation of Belag Formation on Coated Tools by TEM (2012)
  • Author(s): Ryoga SHIOTSU, Hiroshi USUKI, Syogo NAKASHIMA, Kazuyuki KUBOTA, Masakazu ISAKA, Takashi KANO, Makoto HARITANI, Yasuo YAMANE
  • Organizer: 10^<th> Int. Conf. on Progress of Machining Technology(JSPE)
  • Place of Presentation: Tsubame-Sanjo Regional Industries Promotional Center
  • Year and Date: 2012-09-25
• [Presentation] Formation of Belag on Coated Tool and Observation of Belag formation area by TEM (2012)
  • Author(s): Ryoga SHIOTSU, Hiroshi USUKI, Syogo NAKASHIMA,Kazuyuki KUBOTA, Masakazu ISAKA, Takashi KANO, Makoto HARITANI, Yasuo YAMANE
  • Organizer: 10th Int. Conf. on Progress of Machining Technology
  • Place of Presentation: 燕三条地場産業センター(新潟県）
• [Remarks]
  • URL: http://kenchiku-seisan.jp/publics/index/21/
• [Remarks] ベラーグ生成付着機構と摩耗機構に関する研究
  • URL: http://kenchiku-seisan.jp/publics/index/21/
• [Remarks] ミネラル水ミストを利用した快削化技術の開発
  • URL: http://kenchiku-seisan.jp/publics/index/21/