The metallurgical structure and fracture morphology on gear transmission shaft of 45 steel were analyzed by means of optical microscope and scanning electron microscope.
采用光学显微镜、扫描电镜等分析手段，对45钢大齿轮传动轴断裂表面的金相组织、断口形貌进行了分析和检测。
Experimental techniques such as optical microscopy and scanning electron microscopy were used to study fracture of press eccentric gear main shaft.
采用扫描电镜及光学显微镜对压力机偏心齿轮主轴断口进行了系统的分析。
By means of optical-microscopy, scanning election microscopy (SEM), and election diffraction spectrometer (EDS) etc., the crack of gear was analyzed, the reason of the failure is found.
采用光学显微镜、扫描电子显微镜和电子能谱仪等方法对开裂齿轮进行了分析。
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