熔融狀態에서 크롬鋼의 脫炭反應 = Decarburization of Chrome Steel in Liquid Bath

다국어 초록 (Multilingual Abstract)

This study has been undertaken to clarify the decarburization phenomena of liquid chrome steel under reduced pressure. The study has been especially directed toward determining the rate-controlling steps of decarburization reaction.
Chrome melts containing 0.20∼0.30% carbon decarburized by blowing the different oxygen potential gases such as CO_2, Ar-O_2 gas mixture and pure O_2 gas at 1620℃ under 100∼400 Torr and also the change of C, Cr and O contents was observed.
The aspects of the mechanism of decarburization of molten chrome steel under the reduced atmosphere are summarized as follow;
The decarburization by CO_2 blowing that is low oxygen potential, is controlled by the mass transfer in gas site.
The decarburization by blowing Ar-O_2 gas mixture and O_2 are conceived to be carried on according to following reaction model.
C+1/2O_2(g)→CO(g)
xM+y/2O_2(g)→MxOy
MxOy→xM+yO
C+O→CO(g)

목차 (Table of Contents)

• Ⅰ. 緖論
• Ⅱ. 實驗方法
• Ⅲ. 實驗結果
• (1) 鎔鋼表面
• (2) 反應過程의 C 濃度變化
• (3) 反應過程의 C-Cr擧動
• (4) 脫炭過程의 C-O擧動
• Ⅳ. 考察
• Ⅴ. 結論