Abstract：Centerline segregation is the common inner defect of continuous casting slab for heavy plate. Introduces the formation mechanism of centerline segregation. Effects of the technological parameters， including superheat of liquid steel in casting， secondary cooling intensity， optimization of soft reduction process， control of accuracy of the roll gap and status of secondary cooling equipment， on centerline segregation were analyzed through the production practice of continuous casting machine for heavy plate in Steel-Making Plant of Baosteel Zhanjiang Iron and Steel Co.， Ltd.. Puts forward the countermeasures such as control of low superheat of liquid steel in casting， increasement of secondary cooling intensity， increasement of interval and the amount of soft reduction， control of accuracy of the roller and openness and status of new type secondary cooling nozzles. So that the centerline segregation was reduced remarkably. Also makes a conclusion that increasement of interval and the amount of soft reduction and increasement of secondary cooling intensity are extremely effective to reduce the centerline segregation.
丁占元，冯长宝. 控制厚板连铸板坯中心偏析的实践[J]. , 2018, 37(2): 32-35.
DING Zhan-yuan，FENG Chang-bao. Practice in controlling centerline segregation of continuous casting slab for heavy plate. , 2018, 37(2): 32-35.
2018, Vol. 37 
