Which statement accurately describes blasting methods used to strip coatings?

• A. Abrasive blasting, wet blasting, and CO2 blasting
• B. Abrasive blasting only
• C. Wet blasting only
• D. CO2 blasting only

Answer: (A)

Different blasting methods for stripping coatings include abrasive blasting, wet blasting, and CO2 blasting. Abrasive blasting uses a solid media propelled at the surface to physically remove coatings; it’s effective for thick or stubborn layers but creates dust and can roughen or heat the substrate if not controlled. Wet blasting adds water to the abrasive stream, which helps suppress dust, cools the surface, and makes cleanup easier—useful when dust control or thermal effects are concerns. CO2 blasting, or dry ice blasting, uses frozen CO2 pellets that sublimate on impact, lifting the coating away with little residue and minimal heat transfer, making it suitable for heat-sensitive substrates and delicate surfaces. Because coating removal often benefits from choosing among multiple methods based on coating type, substrate, and environmental factors, a statement that includes all three methods accurately describes the blasting options available for stripping coatings.