Analysis of the Reasons for the Distortion of the Indicating Value of the Thickness Gauge

ultrasonic thickness in practice, especially in the monitoring of service equipment, if there is distortion of the display value, deviation from the actual thickness of the phenomenon, resulting in the existence of pipeline (equipment) hidden dangers, is based on the wrong data to replace the fittings, resulting in a large number of material wasteAccording to the tracking use of ultrasonic thickness measurement over the past few years, the distortion of the display and the reason syllable analysis is as follows:1, no display of the display or the cause of flickering of the display of the value of the analysis: this phenomenon in the field equipment and pipeline detection often appear, after a large number of phenomena and data analysis, the reasons are summarized as follows:(1) the surface of the workpiece rough through large, resulting in poor coupling effect between the probe and contact surface, low reflection echo, or even can not receive echo signalIn service equipment, pipes are mostly surface rust, coupling effect is very poor(2) the radius of curvature of the workpiece is too small, especially when the path tube is thicknessed, because the surface of the commonly used probe is flat, and contact with the surface is