油浸漬処理による切削工具の改質及び改質機構の解析 (第1報)

—油浸漬処理超硬工具の摩耗低減効果の検証—

抄録

This study presents a surface treatment method that involves dipping sintered cutting tools into a high-pressure, high-temperature processing liquid. These treated tools have already been introduced in some industries, and it is obvious that tool life has improved by this treatment. Furthermore, this treatment rarely had an adverse influence on tool life. The treated carbide tools were worn by the turning experiments that involved turning a SUS304 stainless steel specimen. Results show that this treatment not only helped reduce tool wear but also required less cutting force. However, this limits the applications of treated carbide tools, e.g., they become unsuitable for heavy duty cutting. The existence of cutting oil on the tool surface was verified by FT-IR. Microscopic analysis indicated that the surface of the treated tools was rougher than that of the untreated tools, the reason for which was revealed by EPMA analysis.