由于渗透检测中的渗透剂具有较强的渗透性，需考虑残留的渗透剂与产品的相容性问题，且渗透剂喷灌中的氟利昂对环境有污染，开展了铝合金熔焊缝涡流阵列检测技术的研究工作。结果表明，铝合金熔焊缝表面缺陷涡流阵列检测工艺可替代原有的着色渗透检测工艺。

Dye-penetrant testing method is used to detect the surface defects of the aluminum alloy welding seam. The penetrant has a strong penetrating ability, and hence the compatibility of the residual penetrant and rocket fuel is needed to be considered. The Freon in penetrant sprinkler irrigation has pollution to the environment. The detection speed of PT is slow,and the detection results are affected by human factors.Aiming at to solve the above problems, the eddy current array testing technology of aluminum alloy welding seam is carried out, and the results showing that eddy current array testing technology of the aluminum alloy welding seam can replace the Dye-penetrant testing method.