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 35, Issue 8
Displaying 1-4 of 4 articles from this issue
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Research Article
  • Study on the Plastic Pattern Making
    Yōiti WAKABAYASHI, Testurō ONO
    1963Volume 35Issue 8 Pages 461-470
    Published: August 25, 1963
    Released on J-STAGE: October 22, 2012
    DOIhttps://doi.org/10.11279/imono.35.8_461
    JOURNAL FREE ACCESS
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      An investigation was done on various of epoxy and polyethylene resins to make plastic patterns for the foundry use.
      It was found that the epoxy A-R36 resin was most suitable for a pattern material, as it had lower shrinkage, high dimensional accuracy and excellent wear-resistance. The impact strength of the plastic pattern was improved by the control of curring technique and the cost was lower than that of metal or wooden patterns.
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  • Three Dimensional Observation of Graphite in Cast Iron by Deep Etching Method
    Takaji KUSAKAWA, Eiichi NAKATA
    1963Volume 35Issue 8 Pages 470-475
    Published: August 25, 1963
    Released on J-STAGE: October 22, 2012
    DOIhttps://doi.org/10.11279/imono.35.8_470
    JOURNAL FREE ACCESS
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      The deep etching method was developed to determine the shape and distribution of graphite in cast iron in three dimensions.
      This method involves three stages, that is (1) dissolve off the matrix in aqua regia, (2) cleaned by fluoric acid and (3) deposition of copper on the graphite surface to enable more distinct identification.
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  • On the Corrosion of Cast Iron by SO2 Gas at High Temperatures
    Hiroshi NAKAI
    1963Volume 35Issue 8 Pages 476-482
    Published: August 25, 1963
    Released on J-STAGE: October 22, 2012
    DOIhttps://doi.org/10.11279/imono.35.8_476
    JOURNAL FREE ACCESS
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      The corrosion of cast iron by SO2 gas at high temperatures was examined. And the following results were obtained :
      (1) The corrosion product of cast iron was composed of pyrrhotite Fe1-xS, wüstite FeO and magnetite Fe3O4. In the outer layer, C and P did not diffuse, on the contrary Mn diffused freely and Si did a little.
      (2) The corrosion rate was controlled by the parabolic rate law.
      (3) Between the corrosion rate and temperature, the exponential law was found.
      (4) C promoted the corrosion rate of cast iron, on the contrary Mn did not and Si affected it very little.
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  • Investigation on the Preparation of Samples for the Determination of Oxygen in Cast Iron
    Sizuya MAEKAWA, Yoshitaka NAKAGAWA, Satoru MATSUMI
    1963Volume 35Issue 8 Pages 482-488
    Published: August 25, 1963
    Released on J-STAGE: October 22, 2012
    DOIhttps://doi.org/10.11279/imono.35.8_482
    JOURNAL FREE ACCESS
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      Investigations were performed on the preparation of samples for the determination of oxygen in cast iron by vacuum fusion method.
      The results obtained were as follows :
      (1) Analysis values of oxygen in white iron and in nodular iron kept in atmosphere did not change if the surface scale on a specimen was removed.
      (2) Analysis values of oxygen in gray iron kept in atmosphere were high.
      (3) Analysis values of oxygen in white iron were not be influenced by the preparation method for analysis as in the case of steel.
      Oxygen content in other cast irons showed reasonable value when they were finished by files.
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