The Quantitative Measurement of Forces Acting on a Powder Bed during a Specific Mechanical Process for Preparation of Composite Particles [Translated]†

• Main Authors: Hiroyuki Yoshino, Yoshihiro Taya, Hisashi Kaga, Ken-ichi Mukaida
• Format: Article
• Language: English
• Published: Hosokawa Powder Technology Foundation 2014-05-01
• Series: KONA Powder and Particle Journal
• Online Access: https://www.jstage.jst.go.jp/article/kona/15/0/15_1997022/_pdf/-char/en
• ISSN: 0288-4534; 2187-5537

Using the mechanical processing method called mechanofusion to prepare composite particles, the authors conducted a study on the preparation of metal-ceramic composite particles in a vacuum. The major principle in forming composite particles is the application of mechanical forces to a mixed powder in the apparatus used. The measurement of those forces, however, has seldom been attempted. Here we used strain gauges in an attempt to quantitatively measure the forces acting on a powder bed. An experiment using glass beads as the raw material showed that (1) if the drum's rotational speed is high and the powder charge is large, great compressive and frictional forces are generated, and (2) compressive force is several times larger than frictional force. These forces were measured during the preparation of composite particles using Cu-Al2O3 mixed powder under reduced pressures, and both forces appeared to be higher when atmospheric pressure was reduced. † This report was originally printed in J. Soc. Powder Technology, Japan. 32(12), 866-873 (1995) in Japanese, before being translated into English by KONA Editorial Committee with the permission of the editorial committee of the Soc. Powder Technology, Japan.