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31 巻, 5 号
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研究論文
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本間 正雄1959 年 31 巻 5 号 p. 477-485
発行日: 1959/05/25
公開日: 2012/10/31
ジャーナル フリーThe heredity of cast iron, that is, the differences in the qualities of cast iron inspite of the percentage of C, Si, Mn, P and S, is explained by the oxygen content and the minute metallic elements.
The relationship between cast iron structures and the oxygen content is clarified, and the basic consideration of the manufacturer of high tensile cast iron, ductile cast iron and nodular graphite cast steel are described.抄録全体を表示PDF形式でダウンロード (1151K) -
沢村 宏1959 年 31 巻 5 号 p. 486-497
発行日: 1959/05/25
公開日: 2012/10/31
ジャーナル フリーThe present author invented a process by which titanium cast iron castings with eutectic graphite structure could be manufactured.
In this treatise, various characteristics and uses of the titanium cast iron with eutectic graphite structure manufactured by the above mentioned process are described, after this process in commercial scale is explained.
Then, the reason why eutectic graphite structure is produced in the titanium cast iron is discussed under the three facts found in the present author's experiment.抄録全体を表示PDF形式でダウンロード (1158K) -
久恒 中陽1959 年 31 巻 5 号 p. 498-508
発行日: 1959/05/25
公開日: 2012/10/31
ジャーナル フリーThe mechanical properties of grey cast iron were improved by the addition of CaCN2 to molten metals, of which the nitrogen content, especially insoluble nitrogen, was increased to about 100 ppm. The mechanism for modification of CaCN2 was discussed and some processing examples for these types of cast iron were described.抄録全体を表示PDF形式でダウンロード (1048K) -
草川 隆次1959 年 31 巻 5 号 p. 509-520
発行日: 1959/05/25
公開日: 2012/10/31
ジャーナル フリーSince cerium and magnesium treated spheroidal graphite cast iron were developed in England and in U. S. A., the studies were proceeded in the preparing process of spheroidal graphite cast iron with calcium which is found in abundance in Japan.
The comparative study has been made regarding the physical and chemical properties of calcium and the conventional adding elements such as cerium and magnesium in order to determine the characteristics of calcium as an additional metal. The typical features which have been found are:
(1) Both calcium and magnesium have little solubility in iron, but have particular vapour pressures, and which of latter is further more.
(2) Concerning physical properties, cerium has similar properties with calcium except the higher specific gravity. The potential problem will involve possible solubility of cerium in iron.
The characteristics of calcium as an additional metal, therefore, have been defined on the bases of solubility in iron and vapour pressure. The course of preparing process of calcium spheroidal graphite cast iron has been formulated simultaneously. For example, when the powdered calcium-silicon which is coated with the cerium compounds is applied, spheroidal graphite cast iron with the tensile properties of 40kg/mm2 or more can be obtained. This process has been developed in the industrial scale.抄録全体を表示PDF形式でダウンロード (1201K) -
米田 健三, 岡見 正一, 青木 雅美1959 年 31 巻 5 号 p. 521-526
発行日: 1959/05/25
公開日: 2012/10/31
ジャーナル フリーIn this paper, we report about the equipment that we designed to inject CaC2 or other powders into the molten iron; and the desulphurizing procedure by means of injection process and some precautions to be taken.
We tested the mechanical properties and chemical compositions of the iron treated by CaC2, CaCN2 and CaO, then studied the saving of the magnesium alloy which is used for producing a ductile iron.
This injection process is available as pre-treatment in producing a ductile iron and improvement of mechanical properties of the treated iron.抄録全体を表示PDF形式でダウンロード (709K)
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