一、前言在当代的无损检测诸方法中,射线探伤是历史最为悠久、技术最为成熟的一种方法。射线探伤应用范围很广,对被探伤物体来说,其尺寸可从微小的电子元件到巨大的机械零部件及其结构件;其成分可从周期表中的低原子序到高原子序元素;制造方式可以是各种各样的铸件、焊接件和组合件。它不 I. Preface In the contemporary non-destructive testing methods, ray inspection is the oldest and most technologically mature method. Radiographic testing a wide range of applications, the object was detected, the size can be tiny electronic components to the huge mechanical parts and structural parts; its composition from the periodic table of low atomic to high atomic number elements; The manufacturing method can be a wide variety of castings, welds and assemblies. It does not