Title: Fabrication of functionally graded grinding wheel by a centrifugal mixed-powder method for CFRP-drilling applications

Authors: Yoshimi Watanabe; Eri Miura-Fujiwara; Hisashi Sato; Kunio Takekoshi; Hideaki Tsuge; Tadashi Kaga; Naoyuki Bando; Shigemasa Yamagami; Kazumasa Kurachi; Hisanori Yokoyama

Addresses: Omohi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan. ' Omohi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan. ' Omohi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan. ' Gifu Economic and Industrial Promotion Center, 5-14-53 Yabuta Minami, Gifu 500-8505, Japan; Research Institute for Machinery and Materials, Gifu Prefectural Government, 1288 Oze, Seki 501-3265, Japan. ' Research Institute for Machinery and Materials, Gifu Prefectural Government, 1288 Oze, Seki 501-3265, Japan. ' Research Institute for Machinery and Materials, Gifu Prefectural Government, 1288 Oze, Seki 501-3265, Japan. ' Research Institute for Machinery and Materials, Gifu Prefectural Government, 1288 Oze, Seki 501-3265, Japan. ' Research Institute for Machinery and Materials, Gifu Prefectural Government, 1288 Oze, Seki 501-3265, Japan. ' Gifu Prefectural Ceramics Research Institute, 3-11 Hoshigaoka, Tajimi 507-0811, Japan. ' Gifu Prefectural Ceramics Research Institute, 3-11 Hoshigaoka, Tajimi 507-0811, Japan

Abstract: We are developing functionally graded grinding wheels fabricated by a centrifugal mixed-powder method. As a first step of this fabrication method, a powder mixture of abrasive particles and metal matrix particles is inserted into a spinning mould. After that, a metal matrix ingot is melted and then the molten metal matrix is poured into the spinning mould with the powder mixture. As a result, the molten metal matrix penetrates into the space between the particles due to the pressure exerted by the centrifugal force. At the same time, the metal matrix powder is melted by the heat from molten matrix poured from the crucible. Finally, a ring-shaped sample with abrasive particles distributed on its surface (functionally graded grinding wheel) can be obtained. In this study, functionally graded grinding wheel fabricated by the centrifugal mixed-powder method will be reported.

Keywords: FGM; functionally graded materials; centrifugal force; casting; diamond particles; functionally graded grinding wheels; CFRP; carbon fibre reinforced plastics; gyro; nanoparticles; composite particles; nanotechnology.

DOI: 10.1504/IJMPT.2011.044912

International Journal of Materials and Product Technology, 2011 Vol.42 No.1/2, pp.29 - 45

Published online: 07 Mar 2015 *

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