等离子热喷涂层沉积过程数值模拟分析.pdfVIP

2024年第53卷第21期热加工工艺ISSN1001-3814

Vol.53No.212024HotWorkingTechnologyCN61-1133/TG

引用格式：王贺权，鲍万辉.等离子热喷涂层沉积过程数值模拟分析[J].热加工工艺，2024,53(21)：154-157.

DOl:10.14158/ki.1001-3814

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等离子热喷涂层沉积过程数值模拟分析

王贺权，鲍万辉

(沈阳航空航天大学机电工程学院，辽宁沈阳110136)

摘要：应用ANSYS有限元分析软件建立了等离子热喷涂单道多层涂层的三维有限元模型，对等离子喷涂

NiCrFeMo涂层沉积过程的温度场和应力场进行模拟。结果表明：在喷涂过程中，涂层系统温度随沉积层的增多而升

高，喷涂至最外层时温度最高；涂层厚度方向的温度梯度大；涂层颗粒的温度随时间的延长而大幅周期波动，涂层颗粒

的应力也随时间而大幅周期波动。涂层与基体结合面处为残余应力集中处，其残余应力为拉应力。

关键词：等离子喷涂；数值模拟；热喷涂层；温度场；残余应力

中图分类号：TG174.44文献标识码：A文章编号：1001-3814(2024)21-0154-04

NumericalSimulationAnalysisonDepositionProcessofPlasmaThermalSpray

WANGHequan,BAOWanhui

(SchoolofMechanicalandElectricalEngineering,ShenyangAerospaceUniversity,Shenyang110136,China)

Abstract:Thethree-dimensionalfiniteelementmodelofplasmathermalsprayingsingle-passmulti-layercoatingwas

establishedbyANSYSfiniteelementanalysissoftware.ThetemperaturefieldandstressfieldofplasmasprayedNiCrFeMo

coatingweresimulated.Theresultsshowthatduringthesprayingprocess,thetemperatureofthecoatingsystemincreases

withtheincreaseofthedepositionlayer,thetemperatureishighestwhensprayingtotheoutermostlayer;thetemperature

gradientofthecoatinginthicknessdirectionislarge;thetemperatureofthecoatingparticlesfluctuatesperiodicallywithtime

increasing.Thestressofthecoatedparticlesalsofluctuatesgreatlywithtimeincreasing.Thebondinginterfacebetweenthe

coatingandthesubstrateisthepositionofresidualstressconcentration,andtheresidual