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简介：Usingsteppatternmatchtechnologywithvariationalresolutioncanrecognizethepositionandorientationoftheweldseamintheimage.Accordingtousingtheimagesegmentationmethodbasedonpatternmatch,notonlyadvancedthespeedandanti-jammingcapability,butalsocapturedtheedgeinformationoftheweldseamandtheedgeoftheworkpiece,andtheimagecoordinateoftheinitialweldingpositioncanbeobtained.Thematrixforhand-eyerelationshipoftherobotcanbecalculatedbyadoptingtherapidcalculationmethod.Accordingtothedepthcalculatingprinciplewiththespecialpointmatchingusingbinocularstereovision,theinitialweldingpositioncanbeconfirmedbycalculatingthemiddlepointoftheperpendicularlineoftworadialsinthespace,andthefunctiontoguidetheweldingrobottotheinitialweldingpositioncanberealized.

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简介：InhighspeedMAGweldingprocess,someweldformationdefectsmaybeencountered.Togetgoodweldquality,thecriticalweldingspeedbeyondwhichhumpingorundercuttingweldbeadcanoccurmustbeknownfordifferentconditions.Inthisresearch,highspeedMAGweldingtestswerecarriedouttocheckouttheeffectsofdifferentfactorsonthecriticalweldingspeed.ThroughobservingtheweldbeadprofilesandthemacrographsofthetransversesectionsofMAGwelds,theoccurrencetendencyofhumpingweldwasanalyzed,andthevaluesofcriticalweldingspeedweredeterminedunderdifferentlevelsofweldingcurrentorvoltage,andtheeffectofshieldinggascompositionsonthecriticalweldingspeedwasalsoinvestigated.

简介：ＣｈｉｎｅｓｅＷｅｌｄｉｎｇＳｏｃｉｏｔｙ￥／／ＴｈｅＣｈｉｎｅｓｅＷｅｌｄｉｎｇＳｏｃｉｅｔｙ（ＣＷＳ），ｆｏｕｎｄｅｄｉｎ１９６２，ｉｓａｎａｔｉｏｎａｌｍａｓｓａｃａｄｅｍｉｃａｎｄｅｎｇｉｎｅｅｒｉｎｇｏｒｇａｎｉｚａｔｉｏｎｉｎｔｈｅｆｉｅ...

简介：由使用焊接电线的镍，焊接弧的以铁酸盐为主要成的可锻的铁的部分熔化地区(PFZ)和焊接金属的机械性质的寒心的趋势上的alloying的效果系统地被学习了。在这个基础上，为以铁酸盐为主要成的可锻的铁(QT400-17)的弧焊的一个新镍电极第一次被开发。它的焊接金属的机械性质能以铁酸盐为主要成的可锻的铁匹配那些。在PFZ的碳化物层(WCL)的宽度显著地被减少，焊接关节有优秀马赫无能，焊接金属有高热的抗碎裂性。(编辑作者摘要)3个裁判员。

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简介：Weldingtransformeriswidelyusedinindustrymanufacturing,depletingalargePortionofelectricityenergy.Basedonmoderncomputerandmathematicalprogramming,Optimundesignofelectro-magneticdevicesleadstohighlyefficientuseofenergrandmaterials.Arcweldingtransformerisoptimizedhere.Amathematicalmodel,consideringbothproductivecostandoperatinglosses,whichiscalledarEconomical-through-Lifetransformer,isestab-lished.Mixedfunctionmethod,mixeddispersingvariablemethodandimprovedorthogonalmethodhavebeenappliedtocarryouttheoptimizationcalculations.ResultshowsthatthepowerfactorisquiteimportantinanEconmi-cal-through-Lifetransformer,andthatsomeprinciplesmustbefollowedinthedesignwork.Alsodiscussedarethead-vantagesanddisadvantagesofthethreemethods.Intheend,theprospectofoptimumdesignofweldingtransformerisforecast.

简介：ＳｕｒｖｅｙｏｎＣｈｉｎｅｓｅｗｅｌｄｉｎｇｃｏｎｓｕｍａｂｌｅｓ￥ＺＨＡＯＬｉｓａｎ（ＨａｒｂｉｎＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＷｅｌｄｉｎｇ（１５００８０））Ａｂｓｔｒａｃｔ：ＩｎＣｈｉｎａ，ｔｈｅｍａｉｎｐｒｏｄｕｃｔｓｏｆｗｅｌｄｉｎ...

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简介：Theelectronbeamwelding-brazingbeingusedtojoin5A06AlalloytoTC4Tialloydecreasestheformationofbrittleintermetalliccompound.Experimentswerecarriedouttostudytheinfluenceofelectronbeamweldingparametersonthetensilestrengthofwelds,basedonanorthogonaltestandanalysismethod.Theweldingparametersincludebeamcurrent,weldingspeed,scanningfigure,scanningfrequency,figuresize,beamoffsetandfocuscurrent.Theoptimumparametersfor3mm5A06Alalloyand2mmTC4alloywereasfollows:accelerationvoltagewas60kV,beamcurrentwas11mA,weldingspeedwas600mm/min,focuscurrentwas0mA,scanfigurewasO,scanningfrequencywas1000Hzandbeamoffsetwas0.5mm.Theresultsshowthatthejointswerewithgoodappearanceandqualityweldedbytheoptimumparameters.ThesuccessfuljointscouldbegainedandthemaximumtensilestrengthofAl/Tidissimilaralloyjointscouldbeupto222.61MPausingelectronbeamwelding-brazing.

简介：Thehigh-speedcamerasystemanddataacquisitionsystemofweldingparameterswerecreatedintandemMIGweldingofhighstrengthaluminumalloy.Theexperimentswerecarriedoutinordertoobtainthephotosofdroplettransferunderdifferentweldingparametersinpulsedmode.Thedroplettransfermodeof"onepulseonedroplet"becomesthepreferredselectionduringweldingprocessbecauseofitsstableprocedureandsoundweldform.Theparameterrangesforcorrespondingtransfermodewereexperimentallyachieved,amongwhichthestabledroplettransfermodeof"onepulseonedroplet"canberealized.Theseeffortsbravethewayforcontrolweldheatinputandweldformationinthefuture.

简介：Inthisessay,westudiedhowheatinputaffectedthemicrostructure,hardness,grainsizeandheat-affectedzone(HAZ)dimensionofWCX355ultra-finegrainsteelwhichwasweldedrespectivelybytheultranarrow-gapwelding(UNGW)processandtheoverlayingprocesswithCO2asprotectiveatmosphereandlaserweldingprocess.Theexperimentalresultsshowwhentheheatinputchangedfrom1.65kJ/cmto5.93kJ/cm,thewidthofitsHAZrangedfrom0.6mmto2.1mm.Theaveragegrainsizegrewupfrom2～5μmofbasemetalto20～70μmandfoundnoobvioussoftenphenomenoninoverheatedzone.Thewidthofnormalizedzonewasgenerallywideas2/3asthatofthewholeHAZ,andthegrainsizeinthiszoneissmallerthanthatinbasemetal.Underthecircumstanceofequalheatinput,theHAZwidthofUNGWisnarrowerthanthatofthelaserwelding.

简介：Inlasernon-penetrationdeeppenetrationweldingprocess,weldingmaterialwillvaporize,metalvaporandambientgaswillproduceahigherdegreeionization,whichformsplasmaofhighconcentration.Inthecaseofformingasmallhole,plasmawillejectfromthehole,andformacousticemission(AE)signals.BecauseAEinformationhasmanyadvantagessuchasnon-contactmeasuring,fastresponse,andhighratioofsignaltonoise,itcanbeusedasamonitorvariableforin-processcontrol.BystudyingAEinformation,informationofweldingpoolandsmallholecanbeobtained.AccordingtocharacteristicofAEinformation,thispaperrevealsthecorrelationbetweenweldingparametersandAEsignals,andprovidesagoodbaseforfurtherqualitycontrol.

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简介：TheAl-alloyarc-weldingshapingsystembasedonarc-weldingrobotisestablished,andtheAl-alloyshapingmanufactureisrealizedwiththeDC(directcurrent)gasmetalarcwelding(GMAW).TheresearchindicatesthatthemetaltransfertypeofDCGMAW,heatinputandtheinitialtemperatureoftheworkpiecegreatlyaffecttheAl-alloyshapingbasedonarcweldingrobot.Onthepenetration,theweldwidthandthereinforcement,theinfluenceofweldingparametersisanalyzedbygeneralizedregressionneuralnetwork(GRNN)fitting.

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