暗室处理在射线探伤中有举足轻重的作用。特别对手工洗片者来说 ,要有很强的责任心 ,裁片、装片、洗片和安全灯下观片都非常重要。一个微小环节的疏忽都可能造成底片判废 ,如划痕、静电感光及指纹等伪缺陷。暗室处理基本操作程序是要判别胶片在显影过程中焊道和母材黑度变化。 Darkroom handling plays a decisive role in radiofrequency detection. Especially for hand-washing those who have a strong sense of responsibility, cut pieces, loading film, film and safety lights under the film is very important. A negligence may result in the death of a film, such as scratches, static electricity and fingerprints and other fake defects. Darkroom processing basic operating procedures to determine the film in the development process of weld bead and base blackness changes.