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1、船用鑄鋼件與船用高強(qiáng)度鋼氣體保護(hù)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(rèn)可的焊工證2.焊接材料必須符合焊接工藝標(biāo)準(zhǔn)經(jīng)DNV認(rèn)可3.預(yù)先進(jìn)行焊接試驗(yàn)，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(jìn)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(rèn)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(bào)告4.焊接過程中船廠必須對溫
2、度（層間溫度）控制5.船廠必須對預(yù)熱及焊后熱處理進(jìn)行控制，焊接報(bào)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(rèn)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,andBer
3、tling(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(yīng)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Thistechnologyprocessisappliedforshipsteelcastingtosteelwelding1.
4、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(yù)加工邊的銹蝕，油污，灰塵，潮濕等。Weldingshouldbedoneafter
5、removingtherust,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(shè)，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。Electrodeshouldbedriedas
6、persection6.5andshouldnotbeusedwithout~6~drying.1.手工焊時(shí)焊條的擺動幅度應(yīng)小于所用焊條直徑的3倍。Wideofweavingtobelimitedtolessthanthreetimesofusedelectrodediameter.2.焊接采用退焊法，焊接應(yīng)用小電流多層多道焊，每道焊層不能過大，每層焊道應(yīng)用手錘錘擊焊縫以減少焊縫應(yīng)力，各焊道接頭應(yīng)錯開50mm。Carryoutbackwardandmulti-pass,multi-layerweldingwithlowcurrent
7、andthinlayer,harmingeachpasstoreduceconcentratedstrength,jointsofeachpassshallbe50mmoffset.3.每道焊縫應(yīng)連續(xù)施焊，以確保合適的層間溫度。Continueweldingeverypasstokeepproperlylayertemp.5．預(yù)熱Preheating1.焊縫預(yù)熱溫度為60~100℃（預(yù)熱范圍距焊縫中心為75mm），用電加熱器或火焰進(jìn)行加熱并覆蓋以絕緣毛毯，預(yù)熱時(shí)必須緩慢且均勻，以避免出現(xiàn)裂紋和變形（每小時(shí)約60~100℃）。Weld
8、jointtobepreheatedof60~100℃(measured75mmfromedgeofweldgroove),applyheatslowlyandevenlybyusingelectricalheatingequipme
