Abstract：For the Ti micro-alloying high strength steel Q390 produced in a domestic steel mill with BOF-LF-RH-CC route， the cleanliness and non-metallic inclusions evolution during the smelting and continuous casting are studied. By means of OMS， SEM and EDS， and bulk sample electrolysis， the purity of steel and evolution behavior of inclusions is investigated. The results show that the production process is steady-going， and the cleanliness of Q390 produced by this route is high. The amount of large size inclusions is 1.4 mg/10 kg in the CC slab， moreover， the most non-inclusions are CaO-SiO2-Al2O3 system complex compounds with higher content of titanium appeared in some inclusions. Meanwhile， the mechanism of some typical non-metallic inclusions arisen during metallurgy process is analyzed.
收稿日期: 2016-01-13
出版日期: 2016-05-09
引用本文:
连明堂. 钛微合金化Q390钢的纯净度研究[J]. 中国钢铁期刊网, 2016, 35(1): 6-9.
LIAN Ming-tang. Study on cleanliness of Ti micro-alloying steel Q390. Chinese Journal of Iron and Steel, 2016, 35(1): 6-9.
2016, Vol. 35 
