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 12, Issue 5
Displaying 1-3 of 3 articles from this issue
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Technical Papers
  • On the fundamental theory of mouldifig sand for steel casting (third report)
    Masao Yosida
    1940Volume 12Issue 5 Pages 1-11
    Published: May 10, 1940
    Released on J-STAGE: March 04, 2013
    DOIhttps://doi.org/10.11279/imono.12.5_1
    JOURNAL FREE ACCESS
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      In the second report, author studied effect of grain size distribution on bonding strength of moulding sand.
      In third report, it is theoreticaly studied as follows.
    (1) determination of fundamental arrangment of grain.
    (2) determination of space occuppied by sand grain.
    (3) determination of position of fracture.
    (4) determination of maximum improvable quantity of bonding strength by clay addition and distribution of grain size.
      and concluded as follows;
    (1) most effective quantity of clay for improving bonding strength is 21%.
    (2) maximum improvable quantity of bonding strength by distribution of grain size is 22%.
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  • Method of cast for long sleeves being used on propeller shafting
    Eikiti Nakazima
    1940Volume 12Issue 5 Pages 12-16
    Published: May 10, 1940
    Released on J-STAGE: March 04, 2013
    DOIhttps://doi.org/10.11279/imono.12.5_12
    JOURNAL FREE ACCESS
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      Primary attention to every foundryman is production of sound castings. Sleeves being used on propeller shafting are machined all over and have to pass a hydraulic test. Mostly, sleeves are cast in vertical and sometimes inclined or horizontal moulds.
      But this time we could obtain the better results by the special method of horizontal cast after many researches and experimental works.
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  • Centrifugal Casting of Dry Cylinders
    K. Kubota, I. Akiyama
    1940Volume 12Issue 5 Pages 17-25
    Published: May 10, 1940
    Released on J-STAGE: March 04, 2013
    DOIhttps://doi.org/10.11279/imono.12.5_17
    JOURNAL FREE ACCESS
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      Superior dry cylinder liners were obtained as a result of tests on centrifugally cast austenite cast iron and nitride cast iron. Features of the method are low percentage of defective castings and superiority of products. The structure and the mechanical properties of the casting are best in the central part within the thickness. The best periphery speed is about 500-600 meters per minute. Generous machining allowance should be taken in the outer diameter.
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