关键词: 磨料流抛光, 喷嘴环, 表面质量, 工艺因素, 汽轮机

Abstract: To solve the process technology problem of turbine static blade ring's abrasive flow polishing,the polishing process and the influence of polishing factors on surface quality were analyzed.According to the features of static blade ring,a special fixture for static blade ring abrasive flow polishing was designed by combining with the loss law of the polishing pressure.The static analysis of pressure loads for blade was made by using ANSYS finite element software,and a reasonable range of abrasive flow polishing pressure was determined.By using signal-to-noise experimental design method to analyze process parameters,the influence of process parameters to the surface roughness and the optimal polishing process parameters were obtained.The experimental results showed that the surface quality of static blade ring was significantly improved,and abrasive flow polishing could satisfy the drawing requirements in polishing stainless steel static blade ring,which was less than 0.4 μm in surface roughness and less than 0.1 mm in deformation.

Key words: abrasive flow polishing, static blade ring, surface quality, process parameter, turbine