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1、外文資料翻譯HISTORYOFUNDERWATERWELDINGTECHNOLOGYUnderwaterweldingtechnologyisthedevelopmentofthemarine,offshoreoilexploitationaswellasassembly,maintenancesuchasoilplatforms,pipelinesandsubmarinepositionsinlargemarinestructuressuchasoneofthekeytechnologies,butalsoshipsemergencyrepair,salvage,constructiono
2、fbridgesandothernecessarytechnicallyworkmeans.Nuclearpowerdevelopmentisthetrendoftheworldinnuclearpowerplantswithinthereactorpressurevessel(RPV)forlong-termworkinthewater,susceptibletostresscorrosioncrackingofthedamage,structuralrepairofnuclearpower,willfacemanychallenges.Tooftenuseradiation-relate
3、dunderwaterweldingmethod,inordertoreducetheworkingstaff.Classificationofunderwaterweldingunderwaterweldinggenerallydividedintothreecategories:wet,dry,andlocaldry.Andthedrycanbedividedintohigh-pressuredryunderwaterweldingandcommon-pressureunderwaterweldingpressure.Locallaws,includingdrainagecoverdry
4、type,high-pressurecurtain-style,steelbrush,mobileairboxandplasmaarcMIGlocaldrymethod.Weldingmethodusedgenerallycoatedelectrodewelding,GTAW,GMWA,andFCAW.InadditiontoweldingunderwaterweldinginadditionthereisanexplosionweldingandFSW(frictionstitchweldingfrictionstitchwelding),thesetwomethodsareallconn
5、ectedbysolidphasetechnology.Followingthedevelopmentofunderwaterweldingcourse:1UnderwaterwetweldingtechnologyIn1802,ascholarnamedHumphreypointedoutthatacontinuousarccanburnunderwater,thatpointedoutthepossibilityofunderwaterwelding,butitspracticalapplicationismorethan100yearslater,cannotmovethestruct
6、ureonlandweldingwasdoneunderthecircumstances.Thefirstpublishedanarticleaboutunderwaterweldingresearchpapersin1933,wasjointlybyHibshrmanJensenandcomplete.1932,Khrenovinventedthethickskinofunderwatermedicinespecialelectrode,theelectrodesurfacetopcoatwithwaterprooflayer,sothatthestabilityofunderwaterw
7、eldingarchasbeenimprovedtosomeextent.TotheSecondWorldWar,underwaterweldingtechnologyhasbeeninthesalvageboat,etc.playanimportantrole.In1971,HumbleOilCompanyoftheGulfofMexicodrillingplatforms,underwaterweldin
