Abstract��By using the optical emission spectrometer��OES���� the optical microscope ��OM�� and the tensile test machine��CM���� chemical composition analysis�� mechanical property testing�� processing the low times streamline and high times metallographic observation of defects of cartridge are carried out. Combined with the manufacturing process and working environment of cartridge�� the causes of the case base defects are analyzed. The results show that the cartridge base defect is surface crack formed by the metal deformation in the opposite direction in cold extrusion press process�� which is irrelevant to the raw materials. According to the case materials�� defect type and strong charge emission test conditions�� the theory of fracture mechanics is used to evaluate the failure probability caused by the defect extension of cartridge in place and use. According to the theoretical calculation�� for the cartridge in the normal charge case�� there is little possibility of extended defects induced fracture.
����������ȫ��. ҩͲ����ȱ�ݷ�����ʧЧ����������[J]. , 2018, 36(6): 41-45.
JIANG Hai-jun��ZHANG Quan-xin. Analysis of defects and the failure possibility evaluation of cartridge case base. , 2018, 36(6): 41-45.
2018, Vol. 36 
