Improvement in Cleanness of Continuously Cast Slab by Decreasing Slag Carry Over
WANG Qian1,HE Shengping1,HE Yuming2,CHEN Wenman2,LI Jiachun2
1. College of materials science and engineering, Chongqing University, Chongqing 400044, China; 2. Steelmaking Plant, Chongqing Iron and Steel Company, Chongqing 400000, China
Abstract：According to the mass balance based on the difference and change of Al2O3 contents in ladle slag and tundish covering slag, the amount of slag carried over from ladle to tundish was 74.5 kg per ladle.Under such a slag carry over, the w(T［O］) in cast slab was 23×10－6. The amount of macro inclusions (≥50 μm), was averaged to 34.85 mg/(10 kg).By controlling the slag carry over the average w(T［O］) was reduced to 15×10－6, the total amount of macro inclusions was reduced to average 6.2 mg/(10 kg).Reducing the slag carry over plays an important role to improve the quality of cast strands, especially when small tundish is used.
王谦;何生平;何宇明;陈文满;李家春. 减少钢包下渣提高铸坯洁净度[J]. 钢铁, 2007, 42(10): 0-0.
WANG Qian;HE Shengping;HE Yuming;CHEN Wenman;LI Jiachun. Improvement in Cleanness of Continuously Cast Slab by Decreasing Slag Carry Over. Iron and Steel, 2007, 42(10): 0-0.
2007, Vol. 42 