シリコン-マンガン脱酸における介在物の凝集について

概要

論文の詳細を見る
It is well known that coagulation of inclusions plays an important role in removal of them in deoxidation of steel with silicon-manganese. The influence of chemical composition of inclusions on the coagulation in static iron melt was investigated. The results obtained are as follows ; 1) The compositions of the primary inclusions in the initial period of deoxidation deviated from those in equilibrium with iron melt. 2) The inclusions tended to be enriched in MnO when manganese had been added prior to silicon-manganese. 3) The floating velocity of inclusions was expressed by Stokes' one or 3/2 of it. 4) The coagulation of inclusions on the way of floating in iron melt took place actively at a ratio [Mn]/[Si]=4 in which liquid inclusions only precipitated in the initial period. 5) Solid silica in inclusions seems to suppress the coalescence of the inclusion particles touched each other and to reduce the coagulation.
社団法人日本鉄鋼協会の論文
1972-05-01