Ship painting Surface preparation (most critical step)
Cleaning: high pressure fresh water rinse to remove salt, sludge, grease and loose old coating. rust removal: use sandblasting (shot blasting/sanding), power tools, chemical cleaning and other methods to treat the steel to the specified cleanliness standard (such as sa2.5, st3 grade), and form a certain roughness to enhance the coating adhesion. environmental control: monitor and control the temperature, humidity and dew point of steel plate in the construction environment to ensure that it meets the requirements of paint technical specifications.
