Abstract��The reason for the cracking of the hot rolled beam steel such as 510L, S610L, S750L produced by Shougang was discussed. The analysis of micro-structure was made on the cracked samples of steel grades 510L, S610L and S750L by optical microscope (OM) and scanning electron microscope (SEM). The results show that rolled-scale on the strip surface, serious central segregation band and the large size precipitates at the grain boundaries are the major reasons for cracking of the hot-rolled automobile beam steel during the stamping process.
�����ã� ��С�£� ����㣬 �� �ȣ� ��ҫ�壬 �� ��. ���������������ֳ�ѹ����ԭ�����[J]. �й������ڿ���, 2014, 32(6): 31-36.
MENG Xian-tang�� WANG Xiao-yong�� LI Rui-heng�� ZHOU Na�� MA Yao-feng�� YU Yang. Analysis on the Reasons of Stamping Cracks in Hot-rolled Automobile Beam Steel Produced by Shougang. Chinese Journal of Iron and Steel, 2014, 32(6): 31-36.
2014, Vol. 32 
