발간논문

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Vol.32, No.10, 1210 ~ 1219, 1994
Title
Deoxidation and Denitrogenization of 18% Cr - 8% Ni Stainless by Ti Addition
김동식Dong Sik Kim, 유병돈Byung Don You, 신영길Young Kil Shin, 이윤Youn Lee, 윤병하Byung Ha Youn
Abstract
The effect of titanium addition on the deoxidation and denitrogenization of stainless steel was studied by laboratory scale experiments using a 50㎏ induction furnace at 1600℃. The equilibrium dissolved oxygen content in 18%Cr-8%Ni steel containing titanium concentration between 0.1 and 0.35wt.% is in the ranges from 35 to 40 ppm in agreement with the measured values. The deoxidation products formed in liquid steel were identified as TiO and TiO₂ at the Ti concentration between 0.15 and 0.25wt.%. These oxides were found to have spherical shape of single phase with the size less than 3㎛. Titanium nitridue(TiN) of hexagonal shape was formed mainly as clusters. The top slag treatment of CaO-Al₂O₃ was found to be superior to the 100%CaO treatment in removing titanium oxides and nitrides out of the melt.
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