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精铸涡轮叶片蜡模模具型面优化设计方法(英文) Title:OptimizationDesignMethodofWaxMoldforPrecisionCastingTurbineBlade Abstract:Theoptimizationdesignofwaxmoldisvitalfortheprecisioncastingprocess,whichdirectlyaffectsthequalityoftheturbineblades.Inthispaper,anoptimizationdesignmethodforthewaxmoldofprecisioncastingturbinebladesisproposed.First,thekeyfactorsaffectingthewaxmolddesignareanalyzed,andthentheidealizedmodelisestablished.TheoptimizationprocessiscarriedoutbyusingtheKrigingsurrogatemodelandtheadaptivegeneticalgorithm.Finally,theexperimentalresultsshowthattheproposedmethodeffectivelyimprovestheaccuracyandefficiencyoftheturbinebladeprecisioncastingprocess. Keywords:PrecisionCasting,TurbineBlade,WaxMold,OptimizationDesign,KrigingSurrogateModel,AdaptiveGeneticAlgorithm 1.Introduction Precisioncastingtechnologyhasbeenwidelyusedinthefieldofindustrialmanufacturingduetoitshighprecision,excellentsurfacequality,andlowcost.Turbinebladesareoneofthemostcriticalcomponentsinmodernturbineengines,whichdeterminetheefficiencyandperformanceoftheengine.Therefore,thequalityofturbinebladesdirectlyaffectstheoverallperformanceoftheengine.Thewaxmoldisoneoftheessentialprocessesintheprecisioncastingmanufacturingofturbineblades.Theoptimizeddesignofthewaxmoldcansignificantlyimprovetheaccuracy,efficiency,andqualityoftheturbineblades. Inrecentyears,manyscholarshavestudiedtheoptimizationdesignmethodsofwaxmoldsfortheprecisioncastingofturbineblades.Zhaoetal.(2018)proposedamethodbasedonthegeneticalgorithmtooptimizethewaxmoldmodel,whicheffectivelyimprovedtheprecisionandefficiencyoftheprecisioncastingprocess.Liuetal.(2020)proposedanoptimizationmethodbasedonthesupportvectormachineandimprovedthedimensionalaccuracyoftheturbinebladeby0.03mm.However,thesemethodsallhavethedisadvantagesofhighcomputationalcomplexity,lowefficiency,anddifficultyinpracticalapplication. 2.KeyFactorsAffectingtheWaxMoldDesign Thewaxmolddesigniscloselyrelatedtothedimensionalaccuracy,surfacequality,andinternalstructureoftheturbineblades.Thefollowingfourfac