Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
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Volume 6, Issue 2
Displaying 1-3 of 3 articles from this issue
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  • Properties of Thin Films
    Akira KINBARA
    1963 Volume 6 Issue 2 Pages 42-48
    Published: February 20, 1963
    Released on J-STAGE: April 23, 2010
    DOIhttps://doi.org/10.3131/jvsj.6.42
    JOURNAL FREE ACCESS
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  • Direct Heating Type Vacuum Sintering Furnarce
    Takeshi IKEDA
    1963 Volume 6 Issue 2 Pages 49-55
    Published: February 20, 1963
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.6.49
    JOURNAL FREE ACCESS
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    In this paper, many trouble points to design of Ta sintering furnace is discussed. Then the performance of manufactured furnace as a result of discussion, of sintered specimen decided by experiment is described.
    Discussing points are as follow,
    1 Selection of electrical heating source and arrengement of electrode.
    2 Chacking mechanism for pressed body of Ta powder.
    3 Compensating mechanism for thermal expansion and contraction of specinen.
    4 Heat insulating method. etc.
    Although it does not describe a final conclusion for correlation between a loss of sintered specimen, insulator, chack, electric source, it may be concluded Jhat heat insulation gave influence for elements described above is somewhat necessary.
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  • The Large Vacuum Drying Systems for Electric Cables
    Ryuji KANEKO
    1963 Volume 6 Issue 2 Pages 56-61
    Published: February 20, 1963
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.6.56
    JOURNAL FREE ACCESS
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    Recently the demand for electrical energy has been increasing rapidly, hence the EHV underground cables as well as the EHV transmission lines are repuired.
    As the insulation of these EHV cables, roil impregnated papers are generally in use. The electrical characteristics of this material is influenced very much by the degree of vacuum drying.
    This paper describes the large vacuum drying systems for electric cables set recently in our company which has the newest vacuum pump systems. It consists of a vacuum tank and pumping system as follows :
    (a) [vacuum drying tank] of internal diameter 5000mm, internal depth 3500mm and volume 60m3.
    (b) pumping system consisting of a main pump and its fore pumps, i. e.Mechanical booster pump (3450 M3/hr) as a main pump and mechanical booster (1030 M3/hr) Oil Rotary pump (3000 l/min) and Nash pump (4700 l/min) as fore pumps.
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