Soundness of Round Bar Malleble Iron Castings

Malleable cast iron was melted in either vacuum or air and horizontaly cast into a round bar shape. The length of the sound zones in the castings produced by the riser and end effects were examined as a function of eutectic fraction and also numerically calculated basing on Darcy's law. The mat...

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Bibliographic Details
Published inImono Vol. 54; no. 4; pp. 233 - 238
Main Authors OKAMOTO, Taira, FUJIUCHI, Shinichi
Format Journal Article
LanguageJapanese
Published Japan Foundry Engineering Society 25.04.1982
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Summary:Malleable cast iron was melted in either vacuum or air and horizontaly cast into a round bar shape. The length of the sound zones in the castings produced by the riser and end effects were examined as a function of eutectic fraction and also numerically calculated basing on Darcy's law. The mathematical analysis suggests that an increase in eutectic fraction leads to widening the sound zones and that castings with low eutectic fraction are accompanied by shrinkage depression. These suggestions are in good agreement with the experiment. The experimental sound zone produced by the riser effect is, however, shorter than the calculated one for castings with eutectic fraction 0.5 or more. Such a disagreement is caused by the fact that the melt with higher eutectic fraction forms a solid skin within a shorter time after pouring into a mold.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0021-4396
2186-0335
DOI:10.11279/imono.54.4_233