一、前言影响超声波探伤能力的因素,主要有超声波发射功率、频率、晶片直径、缺陷大小及其在工件中埋芷深度和缺陷间的距离,简单地说,就是仪器和探头组合情况下的灵敏度,分辨力和盲区有关。本文主要讨论有关分辨力问题。为了提高分辨力,可通过装置声透镜或组合反射镜达到超声波束聚焦或直接把晶体片制成圆弧面或凹抛物面实现聚焦的方法来提高分辨力。此外,也可采用超声波准直仪 First, the foreword The factors that affect the ability of ultrasonic flaw detection, the main ultrasonic power, frequency, wafer diameter, defect size and its depth in the workpiece buried Zhizhi and the distance between defects, simply, is the instrument and the combination of the sensitivity of the probe , Resolution and blind area. This article focuses on the issue of resolution. In order to improve the resolving power, the resolution can be improved by installing the acoustic lens or the combination mirror to achieve the focus of the ultrasonic beam or directly form the crystal piece into a circular arc surface or a concave paraboloid surface. In addition, ultrasonic collimators can also be used