THE JOURNAL OF THE JAPAN FOUNDRYMEN'S SOCIETY
Online ISSN : 2186-0335
Print ISSN : 0021-4396
ISSN-L : 0021-4396
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Volume 11, Issue 9
Displaying 1-2 of 2 articles from this issue
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Technical Papers
  • On the Casting Method of a certain extra big Aluminium Alloy Sand Casting
    I. Maruyama, T. Tanabe
    1939Volume 11Issue 9 Pages 1-8
    Published: September 10, 1939
    Released on J-STAGE: March 05, 2013
    DOIhttps://doi.org/10.11279/imono.11.9_1
    JOURNAL FREE ACCESS
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      The authors mention their experiences obtained in making a certain giant Al alloy sand casting, v. z., air screw for wind tunnel. For this purpose, the alloy “SA2-A” (7～8% Mg-Al) is very suitable; adequate methods for its melting & pouring are in some details shown. The static and vibratory test results carried on the finished products are proved to be very satisfactory.
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  • Anti-Friction and Abrasion Resisting Qualities of Cast Iron (Part I)
    M. Tasaki
    1939Volume 11Issue 9 Pages 9-17
    Published: September 10, 1939
    Released on J-STAGE: March 05, 2013
    DOIhttps://doi.org/10.11279/imono.11.9_9
    JOURNAL FREE ACCESS
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      Firstly, the applicability of the Coulomb's Law to the friction between metals is discussed. In steel to steel, the couple obeys the above law up to a load of 7kg/cm2 and the coefficient of friction (repose) is independent of the load: but increasing above this load limit, the coefficient becomes large and variable with accompanying roughening of the friction surface. However, in cast iron to cast iron or steel to copper-lead alloy the couples follow the law up to a load of 280kg/cm2, and the friction surfaces remain smooth. On the other hand, the sliding coefficient of friction varies with the speed and does not obey the Coulomb's Law.
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