研究論文
ねずみ鋳鉄の黒鉛化及び非金属介在物に及ぼす窒素の影響
1976 年 48 巻 6 号 p. 363-369
詳細
1976 年 48 巻 6 号 p. 363-369
The present investigation was carried out in order to obtain further information on the influence of nitrogen on the graphitization, chill depth and formation of nonmetallic inclusion in gray cast iron. Nitrogen retards graphitization during solidification and increases chill depth in gray cast iron. Addition of titanium increased nonmetallic inclusions such as TiN and TiC. No influence on the graphite and matrix structures were observed by the increase of any type of nonmetallic inclusions. Nonmetallic inclusions such as MnS, VN, TiN, Al2O3, CaO, TiC and AlN were observed with microscopic and EPMA analysis in gray cast iron melted by various type of furnaces such as cupola, low frequency induction furnace and Tammann resistance furnace.
