Optimization of anti-corrosion process for steel wire armor layer of shallow sea cable

As the core infrastructure for marine energy transmission and communication, the corrosion failure of the steel wire armor layer of shallow sea cables directly affects their service life and operational safety. To address the problems of easy rusting of existing hot-dip galvanized armor layers and insufficient shielding of traditional anti-corrosion coatings, this paper focuses on process optimization to propose a solution:based on replacing traditional hot-dip galvanizing with zinc-aluminum-magnesium alloy coating and traditional coatings with graphene composite coatings, the key process parameters of hot-dip coating and spraying are optimized. The effect is verified through comparative tests of multiple process schemes combined with electrochemical testing, salt spray testing,and microscopic morphology analysis. The results show that the optimized armor layer reduces the corrosion rate by 38.5% in the simulated shallow sea environment, the corrosion resistance time of the salt spray test is increased to more than 1200 hours, the adhesion between the coating and the substrate is increased by 56%, and the adhesion between the coating and the coating is increased by 37.5%. This optimization scheme can provide technical support for the anti-corrosion design of the armor layer of shallow sea cables and assist in the long-term service of marine engineering equipment.