爆炸焊英文介绍(Explosionwelding)

ExplosionweldingFromWikipedia,thefreeencyclopediaExplosionwelding(EXW)isasolidstate(solid-phase)processwhereweldingisaccomplishedbyacceleratingoneofthecomponentsatextremelyhighvelocitythroughtheuseofchemicalexplosives.Thisprocessismostcommonlyutilizedtocladcarbonsteelplatewithathinlayerofcorrosionresistantmaterial(e.g.,stainlesssteel,nickelalloy,titanium,orzirconium).Duetothenatureofthisprocess,produciblegeometriesareverylimited.Theymustbesimple.Typicalgeometriesproducedincludeplates,tubingandtubesheets.[1]DevelopmentUnlikeotherformsofweldingsuchasarcwelding(whichwasdevelopedinthelate19thcentury),explosionweldingwasdevelopedrelativelyrecently,inthedecadesafterWorldWarII.Itsorigins,however,gobacktoWorldWarI,whenitwasobservedthatpiecesofshrapnelstickingtoarmorplatingwerenotonlyembeddingthemselves,butwereactuallybeingweldedtothemetal.Sincetheextremeheatinvolvedinotherformsofweldingdidnotplayarole,itwasconcludedthatthephenomenonwascausedbytheexplosiveforcesactingontheshrapnel.Theseresultswerelaterduplicatedinlaboratorytestsand,notlongafterwards,theprocesswaspatentedandputtouse.In1962,DuPontappliedforapatentontheexplosionweldingprocess,whichwasgrantedonJune23,1964underUSPatent3,137,937[2]andresultedintheuseoftheDetacladtrademarktodescribetheprocess.OnJuly22,1996,DynamicMaterialsCorporationcompletedtheacquisitionofDuPont'sDetacladoperationsforapurchasepriceof$5,321,850.Recently,theresponseofinhomogeneousplatesundergoingexplosiveweldingwasanalyticallymodeled.[3]Advantagesanddisadvantages[edit]Explosionweldingcanproduceabondbetweentwometalsthatcannotnecessarilybeweldedbyconventionalmeans.Theprocessdoesnotmelteithermetal,insteaditplasticizesthesurfacesofbothmetals,causingthemtocomeintointimatecontactsufficienttocreateaweld.Thisisasimilarprincipletoothernon-fusionweldingtechniques,suchasfrictionwelding.Largeareascanbebondedextremelyquicklyandthewelditselfisveryclean,duetothefactthatthesurfacematerialofbothmetalsisviolentlyexpelledduringthereaction.Adisadvantageofthismethodisthatextensiveknowledgeofexplosivesisneededbeforetheproceduremaybeattemptedsafely.Regulationsfortheuseofhighexplosivesmayrequirespeciallicensing.[4]References[edit]1.Jumpup^Lancaster,J.F.(1999).Metallurgyofwelding(6thed.).Abington,Cambridge:AbingtonPub.ISBN1-85573-428-1.2.Jumpup^Explosivebonding-UnitedStatesPatent3137937.FPO.Retrieved12December2011.3.Jumpup^Bisadi,H.,KhaleghiMeybodi,M.,^Healthandsafetyexecutive.ExplosivelicencecostsintheUK.