真空熔融法による鋼中酸化物の分別定量法の研究

概要

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The authors studied on the applicability of factional vacuum fusion for determination of the constituent oxides in steel. The experiments were carried out on steels which had contained only two oxides for instance ferrous oxide and alumina, ferrous oxide and silica, manganous oxide and alumina, and manganous oxide and silica respectively and which had been analysed iorine method for ferrous and manganous oxides and modified Dickenson's method for silica and alumina. A series of steels was made from an electrolytic-iron base deoxidised in different ways, with the object of producing constituent oxides of a specific type in each steel. The results obtained were as forrows ; i) The direct total oxygen determinations by the vacuum fusion method agrees closely with the sum of the oxygen fractions by the residue methods, but does not agree with the sum of oxygen fractions by the fractional method. ii) Each oxides content obtained by fractional vacuum fusion does not agree with that obtained by residue method, and fractional vacuum fusion method does not given a sharp separation between two oxides. iii) It is necessary for determination of the constituent oxides in steel that the analysis take up with two or more kind of residue methods which were suitable for each oxide respectively.
1958-12-01