轨道客车转向架自动焊接技术应用现状及发展趋势_冀相朝

WeldingTechnologyVol．44No．12Dec.20150，，、、。、、，，———，。，、、。，，，，，。，［1-2］。，，，，、。1、、、［3］，：，，，。，4，。，，。，，，、。，T，Y＋。，，。，，，，、、，，。12mm，、50mm，1，2，1，1，1（1.，063035；2.，710129）：，、、、，、、。，：、、、、，、，。：；；；：TG47；U260.6：B：1002－025X(2015)12-0001-04：2014-11-19：（2014TCZ040）··1DOI:10.13846/j.cnki.cn12-1070/tg.2015.12.0014412201512，。，，，。（Q235，Q345）（S355），，，，，，。22．1，：、、。，。，，，，，。，，；，。，，。，，、，，。2．2，、、。，，，，［4-6］。，，、、。，，，，，，［7］、［8］、［9］。［10］、［11］、（1）。，，［12］、（2）。，、、、、、，。，。，30~40，，50%~60％，、。33．1、、，，，，，，。，12··2WeldingTechnologyVol．44No．12Dec.2015：，、、，，。，75％［5］。，，。、、。，。，。，，、、。：，，、、、；10，，。。，，，、、、、，。3．2，，、、，，，，、、。3．2．1，。。，，。，，（3），，。。，、，。、，，。3．2．2。，，、、，，。3．2．3，，。（1），，，3··34412201512。，，，，，，，，（4），。（Y、V），1~2mm，，。，，，。（2），，、、、、，。（5），，，。，，，，，。、、，。4（1）、、、，、、。（2），，，50%~60％。（3）、、、、，、，。：［1］，，．［J］．，2008，38（8）：8－12．［2］．［J］．，2009，17（5）：1－5．［3］，，，．［J］．，2012，41（7）：124－127．［4］．［J］．，2006，43（6）：20－21．［5］．［J］．，2004，34（4）：29－30．［6］，，，．［J］．，2011，40（8）：38－40．［7］，．：，201110343569．4［P］.2011－11－03．［8］，．［J］．，2006，43（6）：20－21．［9］，，，．：，201310606583．8［P］.2013－11－25．［10］．［C］//、．．2012．［11］，，．［J］．，2011，48（5）：18－20．［12］．［C］//2013．．2013．45：（1965—），，，：.··4WeldingTechnologyVol．44No．12Dec.2015Ⅰ·、·MAINTOPICS,ABSTRACTS＆KEYWORDSApplicationstatusquoanddevelopmentofautomaticweldingtechnologytobogieofrailwaypassengercarsJIXiang-chao1，YAOTian-yuan2，HUWen-hao1，LUFeng-hua1，CUIYan1（1．BogieFactory，TangshanRailwayVehiclesCo．，Ltd．，Tangshan063035，Hebeipro．，China；2．SchoolofMechanicalEngineering，NorthwesternPolytechnicalUniversity，Xi’an710129，Shaanxipro．，China）P1－4Abstract：Thecharacteristicofrelativesmallerdimension，complicatedstructure，moremediateandthickplateandaccessibilitywassummarizedthroughtheanalysisofbasicfeatureofbogieframeshellstructureofrailwaypassagesrcars，whichdefinitethegenericoperationstyleofmulti-positiontransform，startandstopthearcfrequentlyandallautomaticweldingfortheapplicationofautomaticweldingtechnology．Itwasconcludedthatapplicationofautomaticweldingtechnologywasdevelopedtothedirectionoftheequipmentscale，centralizedarrangement，leadingrole，therhythmofproductionandinformationizationmanagement．Aslongastheproblemcouldbesolvedindesigningofstructure，technologicalandoperationallevel，theapplicationandpromotionofautomaticweldingtechnologywouldfacewithlargerspace．Keywords：weldingrobot，bogieofrailwaypassengercar，frameshell，applicationstatusquoStudyonthehigh-temperatureoxidationperformanceofZrO2/CoNiCrAlYthermalbarriercoatinginterfacebysupersonicplasmasprayingZHANGGuang-wei1，2，ZHANGNan-nan1，LIDe-yuan1，ZHAOWei-yan2，DUANSi-hua2，LIChao2（1．SchoolofMaterialScienceandEngineering，ShenyangUniversityofTechnology，Shenyang110870，Liaoningpro．，China；2．DalianHuaruiHeavyIndustrialSpecialSpearPartsCo．，Ltd．，Dalian116052，Liaoningpro．，China．）P5－8Abstract：TheZrO2/CoNiCrAlYthermalbarriercoatingwaspreparedbySupersonicPlasmasprayingon35CrMosteelandthenitwasheatedataconstanttemperature1150℃．ThestructureandphasecompositionofthecoatingwasanalyzedbySEMandXRDmethods，andsomestudieswerealsofocusontheelementdiffusion．Theresultsshowedthatthecoatingwascompactwithwellcombinedinterfaceandhadnodesquamation．Alittlesharp-angledandhookedgrainsexistedonthesurfaceofthebondcoating．Afterheatedat1150℃，themicrostructureofcoatingpresentedsomethermallygrownoxide（TGO）withdeepcolour．ThethicknessofTGOlayerincreasedandbecamecontinuouswiththeincreaseofoxidationtime．ThroughscannedtheinterfaceofZrO2/CoNiCrAlY，itpresentedAlelementpeakwhichwasassembledatoxidezone，butthecontentofNi，Crelementwerereducedanddescendfrommetalfeltlayertooxidezone．TheAl2O3phasechangedfrommetastableθ-Al2O3tosteadyα-Al2O3inTGOlayer．Itcouldbeprovedthatthehigh-temepratureoxidationresistanceofcoatingcouldbeimprovedobviously．Keywords：supersonicplasmaspray，ZrO2/CoNiCrAlY，TBCs，thermallygrownoxide，high-temperatureoxidationNumericalsimulationofmulti-layerandmulti-passweldingofpressurevesselslugwithdifferentweldingsequencesZHANGHang1，LIYun-tao1，WANGQian1，CHULiang1，LIYao-rong2，LIJun-dong2（1．SchoolofMaterialsScienceEngineering，TianjinUniversityofTechnology，Tianjin300384，China；2．TianjinBaochengMachineryManufacturingCo．，Ltd．，Tianjin300350，China）P9－12Abstract：Usingfiniteelementsoftwaretosimulatetheweldfillingofthree-dimensionalmulti-passweldingundertwodifferentweldingsequenceforthepressurevesselweldinglug，withthetechnologyoflifeanddeathelement，theresultoftemperaturefield，residualstressfieldanddeformationfieldofweldedjointsunderdifferentweldingsequenceswereobtained．Analysisandcomparisonoftheresults，withtestthehardnessofthegoodperformance，theresultsshowthatweldingsequencehadagreatinfluenceontheresidualstressanddeformation，Subsequentweldingoftheweldhadthepreheatingeffect，andsomeoftheresidualstresswereeliminated．Thestresslevelofthewelddirectioninthecenterwasmorethantheyieldstrengthofthematerial，whichwaseasytofractureoftheweldedstructure．Thesinglesideturnhadthesmallresidualstress，hardnesstestandstrengthcalculationresultsshowedthattheschemecouldmeetthepracticalengineeringrequirementsandprovidereferencefortheactualwelding．Keywords：pressurevessellug，multi-layerandmultipasswelding，weldingsequence，fi