Abstract��Surface upwarp defects in the hot rolled steel plate products are investigated by means of optical microscope (OM) and scan electron microscope (SEM). It is concluded that under the surface upwarping defects are mainly iron oxide, second oxide particles, and slag that correspond to three different morphologies respectively. According to EDS results, it can be concluded that surface upwarp defects in hot rolled plates are attributed to rolled��in scale, gas cavity in casting blank, crack in casting blank, mis��adjusting of SP rolling mill, and dropped��in crystallizer fluxes. The causes of surface upwarping defects in hot rolled plates are discussed in detail.
������;��³��;������;������. �����ְ������Ƥȱ�ݷ���[J]. �й������ڿ���, 2009, 27(1): 46-0.
WANG Guo��dong;ZHU Lu��ling;ZHANG Zuo��gui;LIU Jun��liang. Analysis on Surface Upwarp Defects in Hot Rolled Steel Plate. Chinese Journal of Iron and Steel, 2009, 27(1): 46-0.
2009, Vol. 27 
