On Various Properties of Nodular Graphite Cast Steel
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概要
- 論文の詳細を見る
This paper describes at first the outline of the theory of high grade cast iron manufacturing that has been clarified by one of the authors through a fundamental study of the relation between cast iron and its oxygen contents. In place of the relation between the oxygen content of cast iron and its qualities, the relation between tensile strength in cast state and variation of structure was examined. A little difference in the degree of deoxidation of cast iron was indistinguishable by analysed oxygen content. To grade the qualities according to the variation of structure is the most accurate and simplest method. When nodular graphite hyper-eutectoid cast steel containing less than 1.7 per cent carbon is produced the theoretical foundation for determining carbon and silicon contents is to choose the reciprocal relation between the points on the line Eγ or in the lower areas under the line Eγ in the basic projection diagram of the Fe-C-Si system. According to this theory, an investigation of the various properties of nodular graphite hyper-eutectoid cast steel was carried out. The results obtained can be summarized as follows : (1) This cast steel does not call for so careful selection of materials, and is of higher value in mechanical properties than those of DCI, malleable iron and cast steel. (2) Since this metal has far better castability than cast steel and DCI, it is possible to manufacture castings of thin section and complicated shape. (3) Compared with gray cast iron and malleable cast iron, this cast steel is very useful for electric and magnetic material. (4) Wear resistivity of the pearlitic type of this metal is far superior to any of the ordinary cast iron, pearlitic cast iron and DCI. Wear resistivity of the ferrite type is the same as that of DCI, but it is far superior to the black heart malleable cast iron. (5) This cast steel is material that has excellent property for induction surface hardening, even in the case of ferrite type, and after heat.treatment it has the about 40〜50 R_c in the surface hardness. The Jominy hardness curves of nodular graphite cast steel were measured. Compared with the pearlite type, cast steel of ferrite type has low quench-hardness bccause of its carbon concentration in austenite.
- 東北大学の論文
著者
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Meguro Hiroshi
The Research Institute For Iron Steel And Other Metals
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Abe Yoshihiko
Toyota Central Research And Development Laboratories. Inc.
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Abe Yoshihiko
The Research Institute For Iron Steel And Other Metals
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HOMMA Masao
The Research Institute for Iron, Steel and Other Metals
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MINATO Akira
The Research Institute for Iron, Steel and Other Metals
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Homma Masao
The Research Instite For Iron Steel And Other Metals
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Minato Akira
The Research Institute For Iron Steel And Other Metals
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Homma M.
The Research Institute For Iron Steel And Other Metals
関連論文
- Studies of the Manufacturing and Mechanical Properties of Vanadium High Grade Cast Iron
- Studies on the Wear Resisting Properties of the Spheroidal Graphite Cast Steel
- Malleable Cast Iron Specially Controlled on the Mutual Relations among Silicon, Manganese and Sulfur
- Some Investigations on the Cerium-treated Cast Iron
- On Various Properties of Nodular Graphite Cast Steel
- Study of Magnesium Treated Nodular Cast Iron by Reducing in the Electric-Arc Furnace
- Refining Method for Refining Cast Iron by the Electrolysis of Slag
- Research on the Structural Changes of Cast Iron by Contact Meltlng with Various Oxides
- Study On Wear Resisting Properties of Deoxidized High Grade Cast Iron. I : On Wear of Flake Graphite Cast Iron
- Studies of the Quality, Relaxation and Wear Resisting Properties of Vanadium High Grade Cast Iron
- Wear Properties of Various Cast Irons Having Different Graphite Shapes
- Research on the Relation between Cast Iron and Oxygen. I : The Mechanism of the Formation of White Cast Iron under the Influence of Oxygen
- Abnormal Steel and its Structure
- Experimental Research on Super-Heating of Molten Cast Iron
- Research on the Relation between Cast Iron and Oxygen. II : On the Mechanism of the Formation of White Cast Iron in the Presence of Carbide Forming Elements
- Deoxidation of Fe-C and Fe-Si Alloys under Reduced Pressures
- Behaviours of the Precipitates of 17-4 PH Stainless Steel by the Arc Welding Heat
- Welding by Single Bead Test, and Rapid Heating and Cooling Structures of 13% Chromium Stainless Steel
- On the Behaviour of Graphite in Graphitic Cast Steel
- Research on the High Silicon Malleable Cast Iron by the Addition of Bismuth
- Welding of Cast Iron and Nodular Graphite Cast Steel. II : Arc-Welding of Nodular Graphite Cast Steel
- Welding of Cast Iron and Nodular Graphite Cast Steel. I : Properties of the Heat Affected Zone of Cast Iron
- Changes in the Graphite Structures of Flake Graphite and Spheroidal Graphite Cast Irons by the Fusion in a Short Time
- Effect of Oxygen, Sulfur and Trace Elements on Cast Iron
- Considerations on Super-Heating of Molten Cast Iron
- Rate of Desulfurization of Ferroalloys in Vacuum Melting
- The Effects of Manganese and Sulphur on the Graphitization and Mechanical Properties of High Grade Cast Iron Annealed at Low Temperatures
- Effect of Simultaneous Addition of Magnesium and Rare Earth Alloy on the Manufacturing of Nodular Graphite Cast Iron
- The Effects of the Degree of Carbon Saturation and Sulphur on the Graphitization and Mechanical Properties of High Grade Cast Iron Annealed at Low Temperatures