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1、船用鑄鋼件與船用高強度鋼氣體保護焊/手工電弧焊焊接工藝規(guī)程WPSofShipCastingSteeltoHighStrengthSteelGasShieldedWelding/SMAW船檢意見:1.焊工必須持經(jīng)過船級社認可的焊工證2.焊接材料必須符合焊接工藝標準經(jīng)DNV認可3.預先進行焊接試驗,樣板須經(jīng)過NDT檢測并合格再上船安裝之前4.焊接過程和焊接參數(shù)進行控制并記錄5.船上焊接焊縫需經(jīng)過NDT檢測合格船東意見1.焊工名單人員須經(jīng)DNV認可資質(zhì)2.焊接材料需提供證書3.焊接結(jié)束需通過UT和MT檢測提供報告4.焊接過程中船廠必須對
2、溫度(層間溫度)控制5.船廠必須對預熱及焊后熱處理進行控制,焊接報告必須提交至DNV及船東辦公室。編制AUTHORIZE校對APPROVE審核CHECK船檢CLASS船東OWNER注:此工藝文件經(jīng)船東船檢認可簽字后下發(fā)生產(chǎn)部,后期博特寧(ZC3001/ZC3002/ZC3009/ZC3010)所有船只艉部節(jié)能罩均按照此工藝規(guī)程施工,原件由品質(zhì)部存檔。Notice:Thistechnologyprocesstobedeliveredtoproductiondept.afterapprovingbyownerandclass,andB
3、ertling(ZC3001/ZC3002/ZC3009/ZC3010)vesselsternductweldingtobecarriedoutaccordingtoit,thetechnologyprocesstobekeptbyQCdept.1.范圍:Scope:1.1焊接方法Weldingprocess手工電弧焊SMAW1.2應用范圍Appliedrange~6~本工藝規(guī)程適用于船用鑄鋼件與船用鋼板焊接Thistechnologyprocessisappliedforshipsteelcastingtosteelweldin
4、g1.母材MotherPlate鑄鋼件材質(zhì)為DNV410W,船用鋼為DNVA36Steel-castingclassDNV410W,steelgradeisDNVA363.焊接接頭方式及坡口形式WeldingjointandbevelDNV410W30mm0-3mm45?CDNV410W30mm30mmDNVA3663-5mm(1)(2))0-3mm45?C30mmDNVA3660-3mm4.焊接要求WeldingRequirement1.焊接之前必須除去預加工邊的銹蝕,油污,灰塵,潮濕等。Weldingshouldbedonea
5、fterremovingtherust,oil,dust,moistureetc.2.每道焊層必須用鋼絲刷清理打磨干凈。Eachlayershouldberemovedslagbywirebrushandgrinding.3.如果坡口用碳弧氣刨開設,坡口處的碳跡必須打磨干凈。Ifgrooveisair-arcgouged,grindsurfaceofgroovetosmoothandtoremovealltraceofcarbon.4.電焊條須經(jīng)烘干處理(詳見8.3),未經(jīng)烘干的焊條不得使用。Electrodeshouldbedr
6、iedaspersection6.5andshouldnotbeusedwithout~6~drying.1.手工焊時焊條的擺動幅度應小于所用焊條直徑的3倍。Wideofweavingtobelimitedtolessthanthreetimesofusedelectrodediameter.2.焊接采用退焊法,焊接應用小電流多層多道焊,每道焊層不能過大,每層焊道應用手錘錘擊焊縫以減少焊縫應力,各焊道接頭應錯開50mm。Carryoutbackwardandmulti-pass,multi-layerweldingwithlowc
7、urrentandthinlayer,harmingeachpasstoreduceconcentratedstrength,jointsofeachpassshallbe50mmoffset.3.每道焊縫應連續(xù)施焊,以確保合適的層間溫度。Continueweldingeverypasstokeepproperlylayertemp.5.預熱Preheating1.焊縫預熱溫度為60~100℃(預熱范圍距焊縫中心為75mm),用電加熱器或火焰進行加熱并覆蓋以絕緣毛毯,預熱時必須緩慢且均勻,以避免出現(xiàn)裂紋和變形(每小時約60~100
8、℃)。Weldjointtobepreheatedof60~100℃(measured75mmfromedgeofweldgroove),applyheatslowlyandevenlybyusingelectricalheatingequipme