1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Steelmaking Plant, Tianjin Pipe Company Ltd., Tianjin 300301, China
Abstract：In order to study the cleanliness of pressure vessel steel 12Cr1MoVG produced by EAFLF/VDCC route at Tianjin Pipe Company Ltd., the change of total oxygen (w(T［O］)), microinclusion and macroinclusion content in the liquid steel through the process was measured systematically,with tracers and comprehensive analysis of samples. The results showed that in experimental heats the w(T［O］) was 15×10-6 after LF/VD refining and 17×10-6 in tundish, and (1824)×10-6 in billet in average. The number of microinclusions less than 10 μm in size was 353/mm2, which were mainly spherical calcium aluminate, aluminosilicate and compound inclusion of aluminate and sulphide. The macroinclusions were mainly ferrumaluminum silicate, magnesiumcalcium silicate, et al, which are formed during reoxidation, refractory erosion and slag entrainment in ladle and mold.
唐海燕;李京社;杨树峰;孙开明;温德松;. EAFLF/VDCC工艺生产压力容器钢的洁净度研究[J]. 钢铁, 2008, 43(1): 30-0.
TANG Haiyan;LI Jingshe;YANG Shufeng;SUN Kaiming;WEN Desong;. Research on Cleanliness of Pressure Vessel Steel Produced by EAFLF/VDCC Route. Iron and Steel, 2008, 43(1): 30-0.
2008, Vol. 43 
