Abstract��The purpose of this project is aimed to analyze systematically the causes of the lamination defects in Q690D medium plate , The lamination defects of Q690D medium plate was studied by means of scanning electron microscopy and energy spectrum analysis. The results show that the layered fracture is caused by niobium carbide, titanium carbide,sulfide, oxide inclusions, as well as banded structure. Through the observation on steelmaking and rolling process, the continuous casting and rolling technology were improved. The specific measures were put forward to eliminate the layered defect.
����;�ֿ���. Q690D�к��ֲ�ȱ���о�������[J]. �й������ڿ���, 2009, 27(4): 43-0.
ZHAO Peng;YUE Ke��xiang. Study and Analysis on Mechanism of Forming Lamination Defect for Q690D Medium Plate. Chinese Journal of Iron and Steel, 2009, 27(4): 43-0.