轨道车辆用6005A铝合金型材焊接裂纹研究

WeldingTechnologyVol．３7No．6Dec．２００8··6005A，，，，，（，063035）：Cloos6005AMIG。，、、、。T66005A，。，Al-Mg2Si，，。：6005A；；；：TG457.14：B：２００7-10-23：１００２－０２５X(2008)06-００49-036005A、，。6005A。6005A，，，，，，。，，。，6005A，6005A。11.16005A，T6，，175℃。（1），80mm，4mm。4V，70°，1mm。D40，。6005A1。1.2CloosMIG，ER5087（AlMg4.5MnZr），1.2mm。（φ（Ar）99.99％），25L/min。2。，，，，，。w（NaOH）15%，ESCHENBACH10；φ（HF）1％+φ（HCl）1.5%+φ（HNO3）2.5%，Zeiss2/A/V/（m·min-1）/（m·min-1）/Hz1#22019.516.01.32552#18023.510.51.321016005A（）（%）SiMnCrCuZnFeMgTiAl0.560.220.110.0140.0120.120.640.01316005A49３76２００812··Mxiovert40MAT。S570TN5502。210，，，，2。，、、。，，，、。，。，。，。，、，，。，，3。3，，。，，，。，。Al-Mg2SiMg2SiAl-Mg-Si。（4），Si，Mn，Fe，Al-Mg2Si［1］。，，Mg。Mg2Siw（Mg）w（Si）1.73∶1，Al-Mg-Siw（Mg）w（Si）1.73（w（Mg）w（Si）1.14），Si［2］，Si。Mg2Si，，。，，Mg2Si；，，，Mg2Si，，Mg。Al-Mg2Si，，，Mg2Si。［3］，6005A，，。，，。，X，，26005AMIG3250μm50μm（a）（b）：K（α）（L）（K）。4240210180150120906030010119876543210X/keVAl（K（α））XSi（Ka）Mn（Ka）Fe（Ka）50WeldingTechnologyVol．３7No．6Dec．２００8··，，。200，，，3b。，：。，，，，。，。，：，（24h），，。，，200℃，，，。，。EN1011-1，2，MIG：Q=10-3K（U1I1+U2I2）/v=10-3×0.8×（19.5×220+23.5×180）/1.3=5.2431kJ/mm。（1）3。3，MIG：Q′=10-3K（U1′I1'+U2′I2′）/v′=10-3×0.8×（22.6×230+24.7×200）/1.65=4.9154kJ/mm。（2），：ΔQ=Q-Q′=5.2431-4.9154=0.3277kJ/mm。（3）（1）（2），K，MIG0.8。，1.3m/min1.65m/min，0.33kJ/mm，，。，，。（10mm），，10~15℃，，，。MIG，，；，。3，6005A：（1）：，，。6005A。（2）：6005A，。（3）：，，。（4）：，。：［1］，，.6082ZL101［J］.，2005，26（10）：27-31.［2］，.［M］.：，2006.320.［3］，，.6005A［J］.，2003，31（1）：41-44.3MIG/A/V/（m·min-1）/（m·min-1）/Hz1#22021.615.01.652002#18023.712.01.65200：（1967—），，，，，IWE，，350km/hCRH3.51３76２００812AnalysisoftensileexperimentsoffrictionstirweldedspecimensbasedonARAMISWANGLei，XIELi-yang，ZHANGDan，etal．（１．SchoolofMechanicalEngineering＆Automation，NortheasternUniversity，Shenyang１１０００４，Liaoningpro．，China）P１５－１７Abstract：Straindistributionandcurvesofstrainatdifferentpointsduringthetensileexperimentsoffrictionstirweldedspecimenswereanalyzed．Theresultsindicatedthatthestrainchangeslowlyduringtheformer３００seconds，increasedfrom０to１０％，butwhentheneckinghappenedandthestrainwentupfrom１０％to３０％in１００secondsandfinallyfracturedat４００seconds．Thestrainchangedacutelyneartheweldinglineandthestraincurvesweregentlyawayfromtheweldingline，thebiggeststrainoccurredintheheataffectedzoneattheretractingside，whichreached３１％．Thestrainintheweldnutandtheadvancedsidewere２４％and１６％separately．Keywords：ARAMIS，opticaldeformationmeasurement，frictionstirwelding，strainFiniteelementanalysisofweldinginfrogpadofpassengerdedicatedraillineturnoffZHOUWen，LIUXue-yi，LINHong-song，etal．（SchoolofCivilEng．，SouthwestJiaotongUniversity，Chengdu６１００３１，Sichuanpro．，China）P１８－２０Abstract：Thethree-dimensionalnumericalsimulationonweldinginfrogpadofpassengerdedicatedraillineturnoffwasperformedbythermal-elastic-plasticFEA．Thechangesofmaterialcharacteralongwithtemperaturewereconsidered．Theweldingtemperaturefield，residualstressesanddistortionwereanalyzed．Theresultsshowedthatlongitudinalresidualstressoffilletweldwastensilestress，transverseresidualstressoffilletweldwascompressivestressandthemaximumequivalentresidualstresswaslocatedatweldterminal．Theresidualdeformationincreaseswiththeincreaseofheatinputvalue．Theresidualdeformationobviouslydecreasedbyusingmethodofrigidityimmobility．Keywords：pad，welding，residualdeformation，residualstress，finiteelementanalysisCombinedplanningbetweenweldingposeandweldingparametersforarcweldingrobotWANGXiao-feng１，CHENHuan-ming２（１．QuanzhouBoiler＆PressureVesselInspectionInstitue，Quanzhou３６２０００，Fujianpro．，China；２．NanchangHangkongUniversity，Nanchang３３００６３，Jiangxipro．，China）P２９－３１Abstract：OpenedupMotomanUP２０robotsystemagain，theANNtechnologywasusedsuccefullytoresearchthecombinedplanningbetweenweldingposeandweldingparametersforarcweldingrobot．TrainedandsimulatedtheexperimentdatabyMATLABANNtoolbox．ThedatabaseofweldingposeandweldingparameterswereestablishedbyANNself-learntfunction．Theinfoofweldingposewaspicked-upandworkedouttherobotprogramfromthedatabasebyMATLABprogram．Thesaddle-shapeweldwaswelded，asaresult，thefinishedproductaccordedwiththeresultofANNsimulation．Keywords：weldingpose，weldingplanning，saddle-shapeweld，arcweldingrobot，MATLABResearchontheweldingcrackof６００５AaluminumalloyprofileusedforrailvehiclesZHOUJun-nian，HUWen-hao，WANGXiu-yi，etal．（TangshanRailwayVehicleCo．，Ltd，Tangshan０６３０３５，Hebeipro．，China）P４９－５１Abstract：PulsedMIGweldingexperimentswereconductedon６００５Aaluminumalloyprofilesviacloosdoublewireweldingrobot．Aimedattheproblemsofcrackinheataffectingzone（HAZ）afterwelding，comprehensiveanalysiswasperformedindifferentfacets，includingmaterialmicrostructurecharacteristic，weldingheatinput，profilestructure，heatconductandmachining．Asfaras６００５A－T６aluminumalloywasconcerned，higherheatinputproducedintheweldingprocesswasthemaincauseforthecrack；ThephaseAl－Mg２Siwithlowmeltingpointdistributingonthegrainboundary（GB）wasshockedintofragmentationbythetoolwasthedirectfactorcausingthecrack；andthehigherheatconductvelocityoftheprofileafterweldingleadtotheaccumulationofweldingthermalstressandweldingstressathightemperature，whichplacedapremiumontheariseofcrackafterwelding．Keywords：６００５Aaluminumalloy，crac