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 2
Displaying 1-2 of 2 articles from this issue
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Technical Papers
  • Ageing and Restoration of Molding Sand
    S. Kawabata
    1939Volume 11Issue 2 Pages 1-8
    Published: February 10, 1939
    Released on J-STAGE: March 05, 2013
    DOIhttps://doi.org/10.11279/imono.11.2_1
    JOURNAL FREE ACCESS
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      Molding sand after becoming old loses its bond or cohesion through the burning of the clay contained in it and its uniformity is destroyed through splitting of the grains. From these two causes, the molding sand becomes “rotten” or deteriorated. The crumbling of the grains can be known from the loss of porosity while the burning of the clay can be known from the decrease in strength. Of the two causes the latter has a greater influence upon the ageing of molding sand.
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  • The Influence of Some Elements Upon the Mechanical Properties of High Manganese Steel
    K. Tomita
    1939Volume 11Issue 2 Pages 9-31
    Published: February 10, 1939
    Released on J-STAGE: March 05, 2013
    DOIhttps://doi.org/10.11279/imono.11.2_9
    JOURNAL FREE ACCESS
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      The mechanical properties of high manganese steels whose chemical composition has been altered in various manners are shown graphically. The larger the amount of manganese, the better becomes the property; the tensile strength being at a maximum at 1.3～1.4% C. However, as concerns elongation and impact resilience about 1.2% C is desirable. Addition of 0.2～0.4% Si has little influence. The smaller the % P, the better; however, in contrast to ordinary steels, the material is not as sensitive to this addition and 0.1% P is allowable.
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