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我国援外工程刚果布昂扎水电站水轮机的导叶是由30号铸钢制成的。检修中发现2号机8号导叶在进水边止水面上60毫米宽的全长范围内汽蚀深度达5毫米,5号和7号导叶的同样部位也受到汽蚀破坏(见
China’s foreign aid project Congo Bujanza hydroelectric turbine guide vane is made of 30 cast steel. Overhaul of No.8 vane No.2 of No. 2 was found to have a cavitation depth of 5 mm over the full length of 60 mm wide on the water stop and the same sites of vanes 5 and 7 were also subject to cavitation damage