How soon must a blasted surface be primed after completion of blasting to prevent corrosion?

To effectively prevent corrosion after a surface has been blasted, it is crucial to apply a primer as soon as possible. Ideally, the timing for priming after blasting should not exceed one hour. This recommendation is based on the exposure of the blasted surface to environmental conditions such as moisture and contaminants, which can lead to rust formation if the surface is left unprotected for too long.

Priming within one hour maximizes the adhesion of the primer to the clean, rough surface created by blasting, ensuring optimal corrosion resistance. Surfaces that are primed too late may begin to develop flash rust, which can compromise the protective qualities of the primer, ultimately leading to premature failure of the coating system.

To maintain the integrity of the blasted surface and ensure long-lasting protection, industry best practices emphasize the importance of timely priming within this one-hour window following blasting. Therefore, the answer reflects the critical time frame needed to impede the onset of corrosion and ensure the best results in protecting the material.