论文部分内容阅读
检查机车车辆零件有否缺陷主要是用超声波和磁粉探伤法。用超声波法能够查明形状比较简单的零件的内部缺陷,而不用分解部件。用磁粉探伤法可检查单个零件和部件中的外露部分以探测其表面裂纹。磁粉探伤法灵敏度高,且能查明零件的整个表面,但是此法只能用于铁磁材料制成的零件,而且必须与诸如煤油、专用油以及水这类液体并用。铁路机车车辆上有许多零件,其状态的
Check whether the defects of locomotive and vehicle parts are mainly used ultrasonic and magnetic particle inspection. Ultrasonic method can be used to identify the internal defects of relatively simple shape parts without disassembling the parts. Magnetic particle inspection can inspect exposed parts of individual parts and components to detect surface cracks. Magnetic particle inspection is highly sensitive and can detect the entire surface of a part, but this method can only be used with parts made of ferromagnetic material and must be used in combination with liquids such as kerosene, specialty oils and water. There are many parts on the railway rolling stock, its state