INFLUENCE OF ULTRASONIC ANTIFOULING AND LASER CLEANING ON PAINT COATING OF A SHIP

A comparative analysis of the effect of ultrasonic antifouling and laser cleaning on the paintwork of a ship hull is given. It is known that the state of the underwater part of the ship's hull always remains one of the biggest problems. After all, the marine flora and fauna are merciless in relation to the ship's hull below the waterline. In addition to the fact that the growth of flora on the underwater part of your ship's hull will cause damage to it, it will also lead to a loss of speed. Covered with shellfish and algae, the ship's hull will be heavier. It is proved that with a large sticking of marine flora on the ship's hull, the speed of the ship can be reduced by half and it will increase fuel consumption. The importance of combating biological overgrowth stems from the economic performance of the vessel, which is directly related to the cost of delivery of goods, as well as the duration of exploitation of marine hydro-technical structures and structures. It has been established that the treatment of antifouling paintwork in the streaming mode of the ultrasonic field in the modes used and the duration of the process does not cause disturbance of the coating. At the same time, the cleaning speed is at least not inferior to laser cleaning. The lacquer coating is partially destroyed by laser processing, the stability depends on the adhesion of the coating to the base material. Given that the corrosion of the body is caused by the presence of electrically active particles, the results should be considered when using the method of ultrasonic antifouling and laser cleaning. Excessive cleaning of the case in the presence of various modes of the ultrasonic field can lead to an increase in corrosion, that is, it is necessary to find the optimal antifouling modes: frequencies, amplitudes and duration of treatment.