鑄物砂粘結部分の性質に關する研究 : 鑄物砂の研究第 3 報

概要

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Though it is a well-known fact that the bonding materials of molding sands play an important part in casting, there is usually no method to clarify this part. In this report, to investigate the properties of molding sands of Japan and Manchuria at high temperatures, a molding sand was separated into two part (sand material and bonding material), and to research the latter part alone several new methods were adopted, e.g. the dehydration, the expansion and the contraction of the bondiny materials were studied by thermobalance and dilatometer introduced by Prof. K. Honda respectively, and the thermal analysis of them also intended. The molding sands of Japan and Manchuria are Classified into 4 types according to the above-mentioned properties of the bonding materials, the important factor of which are kaolin and ferric hydrogel. The bonding power of "Hirado" type and "Fukuoka" type are chiefly founded on kaolin, that of "Kawaguchi" type mostly due to ferric hydrogel in addition to kaolin and "Kobe" type to both equally. As water constituent of kaolin is reversible after 400℃ heating and that of ferric hydrogel mostly irreversible after equal treatment, water constituents of "Fukuoka" and "Hirado" types are almost reversible after 400℃ heating, "Kawaguchi" type is markedly irreversible and "Kobe" type is middle in this property.
社団法人日本鉄鋼協会の論文
1934-02-25