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1、Weldingistoensurethattheshipoftheshipandthestrengthofthekey.Thispaperdescribestheshipintheweldingofseveralcommonreasonsfortheshortcomingsandproposepreventivemeasures.Weldingistoensurethattheshipoftheshipandthestrengthofthekeyistoensurethatthekeytothequalityoftheship,istoensurethesafety
2、ofshipsnavigatingandoperatinganimportantconditionfor.Ifthereisaweldingdefect,itmaycausestructuralfaults,leakage,orevencausetheshipsank.Accordingtotheshipbrittlefractureaccidentinvestigationshowedthat40percentofbrittlefracturefromtheaccidentwasthebeginningofthewelddefects.Shipsinthetown
3、shipinshipbuilding,shiptheweldingqualityisparticularlyprominent.Intheinspectionofshipsintheprocessofweldingthetestisparticularlyimportant.Therefore,shouldtheearlydetectionofdefects,theweldingdefectsrestrictedtoacertainextent,toensurenavigationalsafety.Manytypesofshipweldingdefects,acco
4、rdingtotheirdifferentpositions,thedefectscanbedividedintoexternalandinternaldefects.Defectshavepores,slag,weldingcracks,lackofpenetration,notfusion,weldandshapeofDimensionarenotmet,thebitingedge,ofwelding,suchasarcpit.firststomatalporestomatalporemeansthatthewelding,bubblebathinthesoli
5、dificationofthefailedescapetheholeformed.Themainreasontherehavestomata:grooveedgeofdirty,water,oilandXiuji;electrodeornotprovisionsofcuringflux,solderorrust-coreskindegeneration,suchasspalling.Inaddition,low-hydrogenweldingelectrode,thearcistoolong,weldingtoofast;submergedarcweldingvol
6、tagetoohigh,areeasilygeneratedintheprocessofweldingstomata.Becausethepresenceofporositysothattheseamofeffectivecross-sectiondecreased,toolargeporeswillreducethestrengthofwelds,thedestructionoftheweldmetaldensity.Preventionistohaveastoma:choosetherightweldingcurrentAndweldingspeedandgro
7、oveedgetocleanupwater,oilandXiuji.Strictlyinaccordancewiththeregulationscustody,clearingandcuringweldingmaterials.Nottousedegenerateelectrode,whentheskindegenerationdrugdiscoveryelectrode,spallingorweldingcorecorrosion,shouldstrictlycontroltheuseof.SAW,shouldusetheappropriateweldingp
