Super-hydrophobic surface water scraper for hard aluminum alloy semicontinuous casting

The utility model discloses a super-hydrophobic surface water scraper for hard aluminum alloy semicontinuous casting. The water scraper comprises a water scraping plate (8); the surface of the water scraper is coated with a super-hydrophobic coating (7). The surface of the super-hydrophobic coating (7) is provided with a nanometer-micron protrusion structure. By using the super-hydrophobic surface water scraper, the cooling water cannot wet the surface of the water scraper. The water drops on the surface of the water scraper are condensed in spherical shapes. By cooperatively using the water scraper having a certain inclination angle, the tumbling inclination of the cooling water on the water scraper is increased, thereby preventing the water from accumulating; meanwhile, the rate of the cooling water falling off from the contact surface between the water scraper and the cast ingot when the water scraper slides relative to the cast ingot is also reduced.