Effect of Simultaneous Addition of Magnesium and Rare Earth Alloy on the Manufacturing of Nodular Graphite Cast Iron
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概要
- 論文の詳細を見る
The important point in manufacturing nodular graphite cast iron is that the property of molten iron before magnesium treatment is to be made constant, that is, the constant degree of desulphurization and deoxidation of molten iron is to be obtained, and the minimum magnesium amount is to be employed. Though the properties of molten irons in cupola are changeable respectively in the beginning, intermediate and finishing period of tapping, those in the batch system as an electric furnace can be made constant by the reducing slag refining of the certain formula. On the other hand, the use of cerium together with magnesium can not only decrease the amount of magnesium, but also make easy the selection of raw iron materials. On the above-mentioned stand point, the manufacturing method of nodular graphite cast iron was studied industrially, in which the molten irons desulphurized and deoxidized in the reducing melting of Heroult electric furnace were added magnesium and cerium. It has been made clear in detail that the nodular graphite cast iron of about 4〜25 mm thickness can be obtained by the residual contents of 0.007〜0.025 per cent magnesium, if two kinds of commercial nodularizing alloys, that is, magnesium alloy containing 16〜19 per cent magnesium and rare earth alloy containing 16 per cent cerium are used in the equivalent ratio.
- 東北大学の論文
著者
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Homma Masao
The Research Instite For Iron Steel And Other Metals
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Ichimura Hajime
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
- Considerations on Super-Heating of Molten Cast Iron
- Rate of Desulfurization of Ferroalloys in Vacuum Melting
- Effect of Simultaneous Addition of Magnesium and Rare Earth Alloy on the Manufacturing of Nodular Graphite Cast Iron