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 8
Displaying 1-2 of 2 articles from this issue
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Technical Papers
  • Reclaiming Old Foundry Sand
    T. Yūki
    1940Volume 12Issue 8 Pages 1-10
    Published: August 10, 1940
    Released on J-STAGE: March 04, 2013
    DOIhttps://doi.org/10.11279/imono.12.8_1
    JOURNAL FREE ACCESS
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      Reclamation on a large scale of silica sand for steel founding which were until recently dumped after being used only once has met with success in actual practice. After ferrous materials have been magnetically removed from the discharged sand traveling on a belt conveyor, they are passed through a rotating sieve whereby excessively fine or coarse sand are eliminated. Clay is removed by washing the sand with water. The plan of the equipment is shown in an illustration.
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  • On The Pressure Of Gas Generating In Cores
    Y. Amari
    1940Volume 12Issue 8 Pages 11-19
    Published: August 10, 1940
    Released on J-STAGE: March 04, 2013
    DOIhttps://doi.org/10.11279/imono.12.8_11
    JOURNAL FREE ACCESS
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      Cases where the gas generating in cores is the cause of blow holes in castings are frequent. The pressure of the gas forming in cores during the casting process was therefore studied using the system illustrated in Fig. 1. The pressure becomes a maximum in one to two minutes after the cast. The maximum pressure is influenced much by the size of gas vents and by the permeability of the sand used. Application of a coating on the cores results in a higher pressure but serves to prevent porous castings by causing the gas to find outlets through the cores and not through the molten metal.
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