Research On Manufacturing Technology Of Heavy Duty Gas Turbine Compressor Blade

Compressor blades are the key components of gas turbines,which directly affect the working performance of compressors and the efficiency of gas turbines.Its unique structure and complex shape belong to the typical thin-walled parts,and high precision machining results in low processing efficiency,low yield.How to improve the processing accuracy and processing efficiency of compressor blades of heavy gas turbine has important engineering significance and academic research value.The main research work is as follows:(1)Inverse and modeling of compressor blade structure.A certain type of compressor blade was measured with a CMM to obtain the point cloud on the surface of the blade.The point cloud information was processed by noise reduction,curve and surface fitting,and calculation of the special parts such as the anterior and posterior edge of the blade to establish the three-dimensional model of the blade.(2)Blade machining process planning.In this paper,many kinds of cutting ways of blade milling were compared and studied,the way of spiral cutting with higher machining efficiency was determined,and the error factors of blade machining were analyzed,and the corresponding solutions were put forward.(3)Cutting force and blade deformation of titanium alloy.The cutting performance of titanium alloy is studied,the cutting force calculation model is set up,and different cutting parameters are simulated respectively to obtain the reasonable cutting force.The cutting force is applied to the blade model for the calculation of the blade deformation,and sum up the law of blade deformation.(4)Blade deformation compensation and simulation processing.Compensating the deformation of the blade by the principle of anti-compensation,and correcting the numerical control program to achieve the purpose of deformation compensation.Blade CNC simulation was processed,heavy gas turbine compressor blade processing was completed.