激光选区熔化TC4闭式叶轮的成形仿真与支撑优化设计.docxVIP

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2024年第53卷第20期

Vol.53No.202024

热加工工艺

HotWorkingTechnology

ISSN1001-3814CN61-1133/TG

DOI:10.14158/j.cnki.1001-3814. rjggy@

激光选区熔化TC4闭式叶轮的成形仿真与支撑优化设计

张文玮1,李博海3,刘征1,2,赵猛1,张琦1,陈孟1

(1.中国航发贵州红林航空动力控制科技有限公司,贵州贵阳550000;2.南昌航空大学航空制造与机械工程学院,

江西南昌330063;3.中国人民解放军93147部队)

摘要院随着金属增材制造技术的快速发展袁激光选区熔化技术因具有成形自由度大尧精度高及表面粗糙度低的优势袁被广泛应用于钛合金闭式叶轮的生产遥在增材制造过程中袁闭式叶轮内部通常无法自成形袁需要添加支撑结构遥为了能够设计出最优的闭式叶轮内部支撑方案袁利用SimufactAdditive增材制造仿真模拟软件袁对闭式叶轮成形过程的变

形以及残余应力进行模拟仿真遥基于仿真结果袁调整支撑的类型尧尺寸尧分布以及成形参数来调控支撑本体的力学性能袁并使用微观CT等手段分析了支撑强度和孔隙率之间的关系遥结果表明院支撑优化后袁闭式叶轮内腔支撑去除后的表面粗糙度从原块体支撑的528滋m降到了13滋m袁疲劳强度提高了约84.8%遥

关键词院金属增材制造曰成形仿真曰闭式叶轮曰支撑优化

中图分类号院TG441.8曰TG456.7 文献标识码院A 文章编号院1001-3814(2024)20-0123-06

FormingSimulationandSupportOptimizationDesignofLaserSelectiveMeltingTC4ClosedImpeller

ZHANGWenwei1,LIBohai3,LIUZheng1,2,ZHAOMeng1,ZHANGQi1,CHENMeng1

(1.AirChinaGuizhouHonglinAviationPowerControlTechnologyCo.,Ltd.,Guiyang550000,China;2.CollegeofAviationManufacturingandMechanicalEngineering,NanchangHangkongUniversity,Nanchang330063,China;3.Unit93147ofthePeoplesLiberationArmy,China)

Abstract院Withtherapiddevelopmentofmetaladditivemanufacturingtechnology,laserselectivemeltingtechnology

(SLM)iswidelyusedintheproductionoftitaniumalloyclosedimpellerbecauseofitsadvantagesoflargeformingfreedom,highprecisionandlowsurfaceroughness.Intheadditivemanufacturingprocess,theinsideoftheclosedimpellerisusuallyunabletoself-form,andasupportstructureneedstobeadded.Inordertodesignoptimalinternalsupportstructureofaclosedimpeller,SimufactAdditivesoftwarewasusedtosimulatethedeformationandresidualstressduringtheformingprocessoftheclosedimpeller.Basedonthesimulationresults,themechanicalpropertiesofthesupportbodywereregulatedbyadjustingthetype,size,distribution