论文部分内容阅读
在对有台阶的毛坯车轴进行纵向穿透性超声波探伤(以下简称超探)中,当探头处于端面边缘适当位置时,在超声波探伤仪荧光屏的 X 轴(以下简称 X 轴)上,可能出现用纵波计算的距离与台阶至探测面的距离不对应的台阶变形回波。我们在对应货车 RD_2型毛坯车轴和蒸汽机车煤水车毛坯车轴(以下简称 RD_2轴和煤水轴)进行超探时,部分车轴出现这种回波。由于台阶变形回波用纵波计算与台阶位置不相对应,波形类似缺陷
In longitudinal penetrating ultrasonic testing of stepped rough axles, when the probe is in the proper position on the edge of the end face, on the X-axis (hereinafter referred to as X-axis) of the screen of the ultrasonic flaw detector, Computation of the longitudinal wave distance and the step to the detection of the surface distance does not correspond to the step deformation echo. We echoed some of the axles in response to the ultra-exploration of the RD2-type rough axle of the truck and the rough axle of the coal-water truck for the steam locomotive (hereinafter referred to as the RD_2 shaft and the coal-water shaft). As the step deformation echo with the longitudinal wave calculation does not correspond to the position of the step, the waveform similar defects