Journal of the Society of Powder Technology, Japan
Online ISSN : 1883-7239
Print ISSN : 0386-6157
ISSN-L : 0386-6157
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Volume 30, Issue 1
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    Yasuo KOHSAKA
    1993 Volume 30 Issue 1 Pages 3
    Published: January 10, 1993
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.4164/sptj.30.3
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    1993 Volume 30 Issue 1 Pages 4-12
    Published: January 10, 1993
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.4164/sptj.30.4
    JOURNAL FREE ACCESS
    Download PDF (8666K)
  • [title in Japanese]
    [in Japanese]
    1993 Volume 30 Issue 1 Pages 13-16
    Published: January 10, 1993
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.4164/sptj.30.13
    JOURNAL FREE ACCESS
    Download PDF (547K)
  • [title in Japanese]
    1993 Volume 30 Issue 1 Pages 17-23
    Published: January 10, 1993
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.4164/sptj.30.17
    JOURNAL FREE ACCESS
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  • The Removal of Deposited Particles Using a High-speed Air Jet
    Hiroaki MASUDA, Kuniaki GOTOH, Hiroshi FUKADA, Yoshiji BANBA
    1993 Volume 30 Issue 1 Pages 24-31
    Published: January 10, 1993
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.4164/sptj.30.24
    JOURNAL FREE ACCESS
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    The removal of fine particles adhering to a wall has been studied using a high speed two-dimensional air jet and paying particular attention to the geometric constitutions of the removal equipment and the duration of air-jet blowing. The experimental results showed that the stable high efficiency region was confined to the vicinity of the impinging point of the air-jet depending on the impinging angle. The high efficiency region was well estimated by a new model where the impinging region was introduced based on the two-dimensional free jet theory. The effect of the nozzle-wall distance and the particle diameter were also estimated.
    The change in the removal efficiency with time was also well represented by a model assuming that the efficiency was proportional to the number of removable adhered particles. In addition, the removal characteristics of the sequential pulse jet were the same as those obtained by the one-pulse jet as long as the total duration of the air-jet was kept constant. The change in the efficiency with pulse number was also represented by the same model.
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  • The Effect of the Operational Condition and Core Particle Size on the Powder Composite Process by a Mechanical Method
    Makio Naito, Akira KONDO, Masahiro YOSHIKAWA, Toyokazu YOKOYAMA
    1993 Volume 30 Issue 1 Pages 32-37
    Published: January 10, 1993
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.4164/sptj.30.32
    JOURNAL FREE ACCESS
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    In this paper, a mechanical processing method called MECHANOFUSION was used to investigate the effect of the chamber revolution and core particle size on the composite process. Glass beads were used as core particles, and titanium dioxide was selected as fine particles. The weight fraction of the fine particles fixed onto the core particles surface was measured to characterize the composite process.
    As a result, the composite process was described by the following two patterns related to the chamber revolution: Under a critical revolution, fine particles gradually adhered to core particles during the processing time, and at a higher revolution, some portions of the fine particles were detached from the core particles surface after a certain time. Furthermore, the critical revolution was inversely proportional to the core particle size.
    These results were explained qualitatively from the analysis of the BET surface area and the SEM pictures of the processed particles.
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  • Roles of Fine Grinding Operation for Ceramic Processing
    Yoshitaka KUWAHARA
    1993 Volume 30 Issue 1 Pages 38-46
    Published: January 10, 1993
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.4164/sptj.30.38
    JOURNAL FREE ACCESS
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