In the context of the “Dual carbon” strategy

green and low-carbon development has become a necessary route for the aerospace manufacturing industry development. Surface treatment process

as a key process of large aircraft parts processing

is characterized by multiple processing procedure

long processing flow

and multiple carbon emission sources

and there are problems of high energy consumption

low energy efficiency

and severe carbon emissions

which poses challenges to its green and low-carbon development. To this end

this study takes the surface treatment process of large aircraft parts as an object to define the carbon emission boundary of the surface treatment process

and analyze the carbon emission characteristics of this process. On this basis

a carbon emission accounting method for the surface treatment process of large aircraft parts based on the improved value stream mapping is proposed

and the carbon emission hotspot is obtained to elucidate the carbon reduction potential of the surface treatment process based on the sensitivity analysis. Finally

the boric-sulfuric acid anodic oxidation of the large aircraft aluminum alloy parts is performed to verify the effectiveness of the proposed method. This research can provide methodological support for the refined carbon emission modeling for surface treatment process

and also lays a theoretical foundation for the subsequent development of energysaving and carbon-reducing strategies.