酸性溶滓処理した軸受鋼の非金属介在物について : 合成スラグによる溶鋼処理に関する研究 I

概要

論文の詳細を見る
It is interesting that when molten steel has been treated with various synthetic slags, the latter is presumed to have some effect on the nonmetallic inclusions and the steel quality. A bearing steel (C 1.0%, Cr 1.5%) treated with synthetic acidic slag (A) was compared with a non-treated similar steel (B) with respect to inclusions and steel qualities. The deoxidizers used are Al, Al+Ca-Si and Ca-Si. The steel (A) contained more oxygen than the other steel (B), but with respect to the chemical composition, cleanliness, results of sand mark test and macro-etch test, both (A) and (B) were almost equal. There were found elongated inclusions (A-type) in a bearing steel added with deoxidizer Ca-Si and treated with acidic slag. An examination of the inclusions by transmission electron diffraction showed that the inclusions consisted of α-tridymite or fayalite. Therefore, the elongated inclusions in steel (A) presumably consisted of FeO-SiO_2 system. Thus the aforementioned on the treatment of molten steel with synthetic slag evidenced that the slag treatment would control nonmetallic inclusions in steel.
社団法人日本鉄鋼協会の論文
1962-11-01