Experimental research on microscopic failure mechanism of the throttling ring in a gun recoil brake

The failure mechanism of throttling rings in gun recoil brakes was experimentally researched from the micro level.In the experimental research, the scrapped throttling rings and recoil solutions from a repair facility were chosen as the research objects.The experimental research was carried out on the basis of metal corrosion abrasion theories and microscopic analysis technologies.The microscopic analysis technologies involved a metallurgical microscope, a scanning electron microscopy and an energy dispersive spectrometer, as well as micro-hardness measurement, inductively coupled plasma mass spectrometry and flame atomic absorption spectrometry.The above research shows that as one of vital components in a recoil brake, the failure of the throttling ring results from the combined action of impact wear, chemical corrosion and cavitation damage.