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Ships operating in marine environments are frequently exposed to harsh conditions such as humidity and salt spray, which can readily lead to corrosion of steel surfaces. Typically, a protective coating is applied to the ship’s surface to prevent corrosion caused by seawater, oxygen, and other media, thereby extending the vessel’s service life. Additionally, during navigation, ships are subjected to natural factors such as wind and sunlight; long-term exposure to the external environment tends to cause discoloration and oxidation of the surface. Coating the surface effectively enhances the weather resistance of the steel and mitigates these adverse effects, maintaining a good exterior appearance. Moreover, marine environments host a wide variety of organisms such as algae, shells, and barnacles, which tend to adhere to the hull surface, forming fouling layers that increase hydrodynamic resistance and reduce sailing efficiency. Marine coatings can reduce biofouling, keep the hull surface clean, lower resistance, and improve fuel efficiency. In addition to protection, coatings enhance the vessel’s visual appeal, thereby increasing commercial attractiveness and market value. Painted surfaces are smoother and easier to clean and maintain, reducing maintenance costs and labor intensity. Therefore, the primary purposes of painting EH36 marine steel are to protect the steel surface, enhance weather resistance, reduce biofouling, improve appearance, and facilitate maintenance, all of which contribute to the safe operation and extended service life of the vessel. However, before performing further treatments such as spraying, plating, or welding, the paint layer must be removed to expose a clean steel surface. Moreover, during service, the paint layer may degrade due to aging, damage, or other factors, necessitating its regular removal and reapplication to prevent corrosion. This chapter explores in detail the application of nanosecond laser cleaning technology for paint removal from the surface of EH36 marine steel, as well as the influence of laser parameters on the post-cleaning surface morphology.

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Control of Substrate Surface Morphology During Laser Paint Removal from EH36 Steel Surface

  • 章节

  • 发表日期：

    2026年

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  • Sijie Wang

摘要

Ships operating in marine environments are frequently exposed to harsh conditions such as humidity and salt spray, which can readily lead to corrosion of steel surfaces. Typically, a protective coating is applied to the ship’s surface to prevent corrosion caused by seawater, oxygen, and other media, thereby extending the vessel’s service life. Additionally, during navigation, ships are subjected to natural factors such as wind and sunlight; long-term exposure to the external environment tends to cause discoloration and oxidation of the surface. Coating the surface effectively enhances the weather resistance of the steel and mitigates these adverse effects, maintaining a good exterior appearance. Moreover, marine environments host a wide variety of organisms such as algae, shells, and barnacles, which tend to adhere to the hull surface, forming fouling layers that increase hydrodynamic resistance and reduce sailing efficiency. Marine coatings can reduce biofouling, keep the hull surface clean, lower resistance, and improve fuel efficiency. In addition to protection, coatings enhance the vessel’s visual appeal, thereby increasing commercial attractiveness and market value. Painted surfaces are smoother and easier to clean and maintain, reducing maintenance costs and labor intensity. Therefore, the primary purposes of painting EH36 marine steel are to protect the steel surface, enhance weather resistance, reduce biofouling, improve appearance, and facilitate maintenance, all of which contribute to the safe operation and extended service life of the vessel. However, before performing further treatments such as spraying, plating, or welding, the paint layer must be removed to expose a clean steel surface. Moreover, during service, the paint layer may degrade due to aging, damage, or other factors, necessitating its regular removal and reapplication to prevent corrosion. This chapter explores in detail the application of nanosecond laser cleaning technology for paint removal from the surface of EH36 marine steel, as well as the influence of laser parameters on the post-cleaning surface morphology.