Stady on Quality Improvement of Large Blade with Weak Rigid Fir-tree Blade Roots of A Steam Turbine
When the weakly rigid fir-tree blade with large root is assembled in the rotor,the assembly gap of the girth and boss ofen occurs.Due to the long size,large weight and weak rigidity of the final stage blade,large deformation will occur during blade processing,and ensuring the final assembly quality is a very big challenge.This paper mainly takes a weakly rigid fir-tree blade designed by Dongfang turbine as the research object,and adopts lean melthod to explore a more reasonable and reliable processing method for the type of blade,so as to improve product quality.
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