In order to investigate the mold reaction characteristics of Mn steel and Cr steel castings individually, the mold reaction products were examined by scanning electron microscopy, electron prove microanalyzer and X-ray diffractometer. From this exper...
In order to investigate the mold reaction characteristics of Mn steel and Cr steel castings individually, the mold reaction products were examined by scanning electron microscopy, electron prove microanalyzer and X-ray diffractometer. From this experiment, the results were summarized as follows: 1) The mold reaction depth increased with increase of Mn content, while it decreased with increase of Cr content. 2) Mold reaction depth decreased with Mn content at 1200℃. 3) Mn, among the reaction products, forms a low fusion silicate, MnO·SiO₂while Cr forms a stable oxide, CrO₃which hindering the reaction between FeO and SiO₂thus the formation of FeO·SiO₂was depressed.