GB/T 34626.2-2017 is a standard for surface cleaning and preparation of non-ferrous metals and their alloys. This standard specifies the operation method, process and technical requirements for surface cleaning and preparation of non-ferrous metals and their alloys before metal and Miscellaneous inorganic overlay treatment. It helps to ensure the good combination of the overlay and the non-ferrous metal and its alloy matrix, and guarantees the performance of the overlay. It is suitable for related production and scientific research scenarios, providing an important basis for improving the surface preparation mass of non-ferrous metals.