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Development of ultra-fine-grain binderless cBN tool for precision cutting of ferrous materials
| Title: | Development of ultra-fine-grain binderless cBN tool for precision cutting of ferrous materials |
| Authors: | Fujisaki, Kazuhiro Browse this author →KAKEN DB | | Yokota, Hideo Browse this author | | Furushiro, Naomichi Browse this author | | Yamagata, Yutaka Browse this author | | Taniguchi, Takashi Browse this author | | Himeno, Ryutaro Browse this author | | Makinouchi, Akitake Browse this author | | Higuchi, Toshiro Browse this author |
| Keywords: | High-precision machining | | Cubic boron nitride | | Single-crystal diamond tool | | Mirror-like surface | | Ferrous material |
| Issue Date: | 1-Aug-2009 |
| Publisher: | Elsevier B.V. |
| Journal Title: | Journal of Materials Processing Technology |
| Volume: | 209 |
| Issue: | 15-16 |
| Start Page: | 5646 |
| End Page: | 5652 |
| Publisher DOI: | 10.1016/j.jmatprotec.2009.05.023 |
| Abstract: | A new cutting tool was developed from ultra-fine-grain (<100 nm), binderless cubic boron nitride (cBN) material fabricated by transforming hexagonal boron nitride to cBN by means of sintering under an ultra-high pressure of 10 GPa at 1800℃. The cutting edges of the newly developed cBN tool can be made as sharp as those of single-crystal diamond tools. In this experiment, cBN and single-crystal diamond tools of the same shape were compared by precision cutting tests using stainless steel specimens and steel specimens coated with an electroless Ni-P layer. The surface roughness (Rz) of specimen surfaces cut with the cBN tool by means of planing was approximately 100 nm for both the Ni-P-coated steel and stainless steel specimens. Though similar Rz values were obtained for Ni-P layers cut by the cBN and diamond tools, an Rz value exceeding 2000 nm was obtained for stainless steel cut by the diamond tool. High-precision surfaces with Rz values of 50-100 nm were obtained for stainless steel specimens cut with the cBN tool under high-speed milling (942 m/min) conditions. These results indicate that the newly developed cBN tool is useful for the ultra-precision or precision cutting of ferrous materials. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/39399 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 藤﨑 和弘
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