鋳鋼の流動性に関する研究

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This paper treats results of studying simple and acculate measuring method of fluidity for the purpose of establishing standard melting practice of electric cast steel and effect of oxygen content in molten steel for fluidity. Results obtained are summarized as follows : 1) Simple and acculate measuring method of fluidity of cast steel has established. 2) Casting temperature has distinct relation to fluidity of cast steel, but other factors have more clear relation. 3) Oxygen content in molten steel has no distinct relation to fluidity according to our investigation. 4) Fluidity of over-deoxidized or over-oxidized molten steel is poor, refering to relation between [O]FeO/[O] total, [O]FeO+[O]MnO and fluidity. 5) Fluidity increases as MnO content in molten steel increases. 6) Proper range of Al addition in ladle exists. 7) Silicate inclusion must be removed during steel making process, as silicate inclusion lowers fluidity of cast steel. 8) Inclusion such as SiO_2, Al_2O_3 has high melting point and disturbs super-cooling of molten steel by the action of nucleus, existence of such inclusion lowers fluidity of cast steel. 9) Al_2O_3 content in molten steel has no clear relation to fluidity.
社団法人日本鉄鋼協会の論文
1957-04-01