Knowledge Base

TItle Title

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Hull Steel Plates

Pain Points:
Scale and rust form on the surface during rolling, transportation, and storage.
Anti-rust primer or oil contamination from the manufacturing process affects subsequent coating adhesion.

Value of Shot Blasting:
Removes scale and rust, providing a clean metal surface.
Creates surface roughness (Ra 50–100 µm), significantly improving anti-corrosion coating adhesion.
Eliminates localized stress concentrations, reducing the risk of stress corrosion cracking.
Extends dry-dock intervals and reduces lifecycle maintenance costs.

Marine Castings

Pain Points:
Residual molding sand, scale, and burrs remain on casting surfaces.
Surface micro-cracks and porosity may develop during casting, affecting sealing integrity and fatigue strength.

Value of Shot Blasting:
Thoroughly removes molding sand and scale, delivering a clean and dense casting surface.
Eliminates burrs, improving appearance and assembly precision.
Relieves tensile stresses on casting surfaces, reducing the likelihood of fatigue crack initiation.
Enhances coating/plating adhesion and improves resistance to seawater corrosion.