造塊作業の研究(V) : 熔鋼の空気による酸化が鋼中非金属介在物におよぼす影響 No.3 : 各種成分の酸化速度および各種成分の相互作用について

概要

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Oxidation of molten steel during pit-practice is influenced with oxidizing velocities of various elements in it. The authors made experiments on oxidizing velocities of various elements in molten steel by air and the effect of the third element on oxidation and its velocity. The rate of the various elements removed by oxygen in air was measured and the velocity constants were determined. The results obtained were as follows. 1. At all range of experimental temperature the oxidation rate of aluminium was most rapid as compared with those of other elements. The amount of the residual oxides in molten steel that were SiO_2, MnO and FeO were decreased by reason of existence of aluminium. 2. The oxidation of carbon was next rapid, but its velocity varied slightly with temperature and the carbon in molten steel behaved similarly with aluminium. 3. The oxidation of high-carbon molten steel by air during its pourong did not act as the principal origin of non-metallic inclusions in steel. On the other hand, in the case of high aluminium content, the oxidation by air was expected to be the origin. They also mentioned of the relation between oxidation of molten steel by air during pit-practice and non-metallic inclusions in practical process.
社団法人日本鉄鋼協会の論文
1957-11-01