TC4Titanium Alloy Stator Blade Forging And Forming Process Simulation

The blade plays the key role of energy conversion. The blade is a special part in thecomposition of the engine, which shape is complex, the number is numerous. They aredifficult to process, and it is prone to failure. At present research on precision forging ofblade has not yet been system and perfect. So it is necessary to study thoroughly theprecision forging laws of the blade, and to grasp the influence laws that technicalparameters act on precision forging. In this thesis, the precision forging process rule andmicrostructure evolution of TC4titanium alloy blade in an engine are analyzed andstudied through3D finite element numerical simulation. The research results have sometheoretical significance and practical values for the development of the formingtechnology of the blade. The main contents of this paper are listed as follows:The effects of different annealing processes on TC4titanium alloy microstructureand hardness are discussed by the heat treatment experiments, which are prepared forthe material softening of thermal simulation compression test; The impact of differentprocess parameters (deformation temperature, strain rate deformation degree) on theflow stress of TC4titanium is analyzed by the thermal simulation compression tests.Based on the experimental results. The thermal deformation relationship model of TC4titanium alloy is established; Each step die forgings and their moulds were establishedby three-dimensional molding Pro/E software. Using the finite element simulationsoftware to simulate the forming process of the forgings. Through repeated testing, theforgings are formed in the cavity filled with no flash while less evenly distributed andobtain a better field quantities simulation results; Using the thermal coupling numericalsimulation method to analyze different process parameters (initial forging temperature,pressure velocity, friction factor) of blades forming process simulation results. Theeffect of different process parameters on the blades precision forging forming process isobtained. The optimal process parameters of the blades forming process is obtainedthough comparative analysis and the optimal process parameters applied to practical.