炭素鋼の合成粉末スラグ処理の効果について

合成スラグによる溶鋼処理に関する研究-II

抄録

Molten carbon steels were treated with a small quantity of synthetic powdered slag consisting of CaO, Al₂O₃ and so on at pouring period in order to accelerate the desulfurization or deoxidation, and to change the shapes and qualities of inclusions and improve the steel qualities.
It was found that (1) the desulfurization of molten steel advances rapidly and (2) mainly the sulfide inclusions decrease and the stringer-type inclusions do in the case-hardening steels and (3) larger inclusions turn into smaller inclusions and (4) the toughness of steels, particularly, its impact value, is improved remarkably.
Thus, it was evidenced that the treatment of molten steel with synthetic powdered slag would be useful for the rapid refining of steels.