Method for preventing local cavitation of flow passage component of water turbine

The invention discloses a method for preventing local cavitation of a flow passage component of a water turbine. The method comprises the steps of (1) selecting a coating material, (2) carrying out surface treatment, (3) preparing a mixing agent, (4) coating, (5) curing and (6) polishing. The method carried out repair protection aiming at the problems of cavitation, corrosion, scouring and the like of a guide vane of the water turbine, is a beneficial attempt of new technology, and can quickly and efficiently solve a series of problems of cavitation, corrosion, scouring and the like of flow passage components of the water turbine; and the method is simple to operate and low in cost, can be widely used in the hydropower industry, perfects an enterprise equipment management system, and brings good economic benefits to enterprises. 本发明公开了一种防止水轮机过流部件局部汽蚀的方法，(1)选择涂抹材料，(2)表面处理，(3)配制混合剂，(4)涂敷，(5)固化，(6)抛光，本发明针对水轮机导叶的汽蚀、腐蚀、冲刷等问题，进行修复保护，是一项新技术的有益尝试，可以快速高效的解决水轮机过流部件的汽蚀、腐蚀、冲刷等系列问题；且操作简单、费用低廉，此修复方法可在水电行业得到广泛使用，完善企业设备管理体系、