超声检测是五大常规无损检测方法中比较常用的一种,随着数字超声检测技术的发展,目前数字超声检测仪已基本取代了模拟超声检测仪。但是,由于实际检测中仪器检测灵敏度没有正确调节可能会导致漏检现象。本文通过对超声检测过程中几种不同灵敏度的探讨,研究了灵敏度调节的方法,阐述了正确调节灵敏度的重要性。 Ultrasound testing is one of the five commonly used non-destructive testing methods. With the development of digital ultrasonic testing technology, the digital ultrasonic testing instrument has basically replaced the analogue ultrasonic testing instrument. However, the lack of proper adjustment of the instrument detection sensitivity in the actual test may result in missing test. In this paper, the sensitivity of the ultrasonic detection process to explore several different methods to adjust the sensitivity of the method described the importance of correct sensitivity adjustment.