Guo Yuming, Xu Zhongbo, Wang Haitao. Research on Inclusions in Al-killed Steel during LF Refining[J]. IRON STEEL VANADIUM TITANIUM, 2007, 28(3): 14-18.
Citation:
Guo Yuming, Xu Zhongbo, Wang Haitao. Research on Inclusions in Al-killed Steel during LF Refining[J]. IRON STEEL VANADIUM TITANIUM, 2007, 28(3): 14-18.
Guo Yuming, Xu Zhongbo, Wang Haitao. Research on Inclusions in Al-killed Steel during LF Refining[J]. IRON STEEL VANADIUM TITANIUM, 2007, 28(3): 14-18.
Citation:
Guo Yuming, Xu Zhongbo, Wang Haitao. Research on Inclusions in Al-killed Steel during LF Refining[J]. IRON STEEL VANADIUM TITANIUM, 2007, 28(3): 14-18.
To analyze the behaviour of inclusions in Al-killed steel during LF refining and the effect of Ca -treatment, samples were taken at 3 different periods which were 3 minutes after refining, after white slag formation and after Ca-treatment. The number, shape and composition of the non-metallic inclusions were analyzed and contrasted. The results showed that Ca-treatment was effective in improving the cleanliness of steel and modifying the inclusions. Spheroidizing ratio of inclusions increased obviously after white slag formation and increased more after Ca-treatment. Most of inclusions were Al2O3-SiO2-MnO and Al2O3 after 3 minutes refining. After white slag formation the inclusions transformed to Al2O3-CaO(CaS)-SiO2, then transformed to Al2O3-CaO after Ca-treatment.