缸盖是汽车发动机零件中结构较为复杂的箱体零件,也是关键零件。该零件的加工工艺复杂,加工过程耗时较长,加工精度要求高,而其一次性成品合格下线率非常重要,将直接影响发动机的产量。文章通过对缸盖成品下线数据进行收集整理,分析了造成零件报废的主要原因,阐述了毛坯上料前的内部损伤探测方法并展望了其在缸盖检测上的未来发展趋势。 Cylinder head is a car engine parts more complex structure of the box parts, but also the key components. The parts of the complex processing technology, the processing time-consuming, high precision machining requirements, and its one-time qualified product off-line rate is very important, will directly affect the engine output. In this paper, the main reason for the scrapped parts is analyzed by collecting and sorting the data of the cylinder head finished product. The internal damage detection method before the blank material feeding is expounded and its future development trend in cylinder head inspection is also forecasted.