Which repair method uses thin sheets of corrosion-resistant material welded to a corroded surface to restore corrosion resistance?

Which repair method uses thin sheets of corrosion-resistant material welded to a corroded surface to restore corrosion resistance?

• A. Sheet lining
• B. Cladding
• C. Overlay
• D. Laminate patch

Answer: (A)

Sheet lining involves attaching thin sheets of corrosion-resistant material to the damaged area and welding them in place to restore corrosion resistance. This approach is ideal when the corrosion is localized and the remaining base metal is still sound, because it adds a protective barrier with minimal material, thickness, and heat input compared to other methods. It differs from cladding, which bonds a thicker corrosion-resistant layer to a large surface, often over the entire area; from overlay, which builds up material by depositing weld metal on the surface rather than using preformed sheets; and from laminate patch, which relies on patches rather than continuous sheets.

Sheet lining involves attaching thin sheets of corrosion-resistant material to the damaged area and welding them in place to restore corrosion resistance. This approach is ideal when the corrosion is localized and the remaining base metal is still sound, because it adds a protective barrier with minimal material, thickness, and heat input compared to other methods. It differs from cladding, which bonds a thicker corrosion-resistant layer to a large surface, often over the entire area; from overlay, which builds up material by depositing weld metal on the surface rather than using preformed sheets; and from laminate patch, which relies on patches rather than continuous sheets.