关键词: 表面处理, 抗冲蚀, 汽轮机, 叶片

Abstract: According to test requirements of hot-state erosion test of mall saturation steam turbine blades, through many schemas of thermodynamics calculation and analysis, hot-state test equipments and system fit for turbine’s anti-erosion performance test is established. Contrast tests of anti-erosion performance of sample blades employing the better programs selected from cold-state contrast tests are processed. Two evaluation methods-weightlessness method and apposition element method are employed to weigh the erosion mass and value the erosion performance of each program. In addition, delicate analyses of samples’ micro-organization and micro- appearance are processed through scaning electron microscope- (SEM), metallographic analysis and chemical corrosion tests. It indicates that the anti-erosion performance of laser phase- change quenching technology is the best.

Key words: Anti-erosion, Bade, Steam turbine, Surface treat