换热器制造工艺指导流程

浮头式换热器制造工艺作业指导书Floatingheadheatexchangermanufacturingoperatinginstructions编制/日期：校对/日期：审核/日期：-1-筒节Tubesection1.材料确认：在材料管理员的指导下，对材料的标记确认。Confirmmaterial:undertheguidanceofmaterialsadministrator,recognizedthemarkofthematerial。2.根据工艺排版图将板料平铺于切割架上，号料划出切割线、刨边线、检查线。Accordingtoprocessdiagram,layoutingthematerialboardontheshelves,cuttinganddrawthecuttingline,planeedge,checkingline.3.坡口加工（见坡口工艺卡），完成后对坡口进行超声检测。Grooveprocessing(seegrooveprocesscard),Ultrasonictestingafterthecompletionofthegroove。4.卷板：将坡口加工完好的板料置于卷板机上、下辊轮间，板料周长方向与辊轮垂直，纵向与辊轮平行。Coil:placethegrooveprocessingintactsheetontherollingmachine,betweentheupperandlowerroller,thesheetperimeterdirectionisverticaltotheroller,andthelongitudinalisparalleltotherooler.5.纵缝组对：将纵缝口两端对齐，控制错边量，错边不大于1/4δ且不大于2mm，并点上引弧板。Combinethelongitudinalseam:Alignbothendsofthelongitudinalseam,controltheamountoftheStaggeredside,thestaggeredsideisnotgreaterthan1/4δandnotgreaterthan2mm,andpointthearcplate.6.纵缝焊接，见焊接工艺卡。Longitudinalseamwelding,seetheweldingprocesscard。7.校园：不园度控制在0.5%DN,且不大于5mm,DN≥1200,不大于7mm；棱角度，控制在δS/10+2，且不大于5mm。Regulatetomakesureitcircle:Park,controlthedegreeofof-roundnessat0.5%theDN,andnotmorethan5mm,theDN≥1200,notmorethan7mm;theangularity,shouldbecontrolledatδS/10+2,andnotmorethan5mm。筒体TubeBody1.将各筒节按排版图要求组对，各缝分布于0~180°，互错180°，环缝组对间隙0~2mm。Accordingtotherequirementsofeachtubesectionlayoutdiagram,combinethem,eachseamisdistributedinthe0to180°,Stagger180°,thecircumferentialseamcombinationgapis0~2mm.2.组对完毕后，从0°、90°、180°、270°四个方位检测，直线度10%，且不大于4.5mm。.Detectafterthecombinationofthe0°,90°,180°,270°fourorientation,10%straightness,andnolargerthan4.5mm.3.环缝棱角度控制在δS/10+2，且不大于5mm错边量。ControltheringslitangulardegreeatδS/10+2,nolargerthan5mmStaggerionofthevolume.4.环缝组对时不可强行组装，可用加减丝扣调节间隙，间隙在0~1.5mm最佳。WhencombinetheCircumferentialseam,wemustnotassembleforcibly,usetheavailablesubtractionthreadedtoadjustthegap,thegapisatbestinthe0~1.5mm.浮头式换热器制造工艺作业指导书Floatingheadheatexchangermanufacturingoperatinginstructions编制/日期：校对/日期：审核/日期：-2-5.确定错边值后，依次从最佳点入手，顺势而成，环缝错边量不得大于1/4δ板厚且不大于2mm。DeterminingthevalueoftheStagger，startfromthebestpointbyturn,homeopathytobeit,thecircumferentialseamshouldnotbethan1/4δplatethicknessandnotmorethan2mm.6.对组装后的筒体进行直线度检测，四点方位，其最大差值不得大于4.5mm。Testthestraightnessafterassemblingthecylinder,fourpiontposition,themaximumdifferenceisnotgreaterthan4.5mm。筒体与法兰组对TubeBodyAndLawOrchidGroupTo1.法兰必须是经过检验，贴有合格标签的，对应的流水号和产品编号的。Theflangemustbetested,labelledwithaqualifiedlabel,thecorrespondingserialnumberandproductnumber.2.用直尺划出法兰螺栓孔跨中线,与筒体纵缝线平行组装。Drawtheflangeboltholesacrossthecenterlinewitharuler,assembleandmakesureitparalleltothecylinderlongitudinalsuture.3.将装一端法兰的筒体,纵缝方向转至90°和270°方位(即水平方向左、右两侧),均分法兰孔,四等分。Turntheoneendinstalledflangeofthecylinder,longitudinalseamdirectiontothe90°and270°azimuth(horizontalleftandrightsidesdirection),dividedequallyflangeholes,quartered。4.用铅垂线或水平尺将有一端法兰的筒体调节好，要求0°~180°跨中线与铅垂线重合。Adjusttheoneendflangeofthecylinderbytheplumblineorlevelruler,requirethe0°to180°crossingcenterlineandplumblinetocoincidewitheachother.5.组对另一端法兰，即管箱法兰铅垂线与跨中等分线要求与上法兰相同条件（即螺栓孔跨中）。Assembletheotherendoftheflange,thusthetubeboxflangeplumblinesharesthesameconditionwiththemiddle-pointline(thustheboltholeisatthemiddle).6.装配间隙0~1.5mm，错边量0~2mm。Theassemblygapis0~1.5mm,thestaggrmountis0~2mm.7.检测两端法兰面水平度，用卷尺在0°、90°、180°、270°四个方位，测得壳体长，长度偏差2mm。筒体总长控制在（）±3mm。Detectetheleveldegreesofbothendsoftheflange,usethetapemeasureat0°,90°,180°,270°fourcardinalposition,measuretheshelllength,thedeviationis2mm.Thebarrellengthiscontledat()±3mm。8.检测、焊接完毕后，对筒体环缝内打磨平，送探伤检测，要求RT≥（）%，Ⅲ级合格。Afterdetectionandwelding,polishedflatwithintheseamofthecylinderring,sendingtheflawtodetect,requsttheRT≥()class,IIIqualified.浮头式换热器制造工艺作业指导书Floatingheadheatexchangermanufacturingoperatinginstructions编制/日期：校对/日期：审核/日期：-3-接管与法兰Nozzleandtheflange将坡口加工好的接口与相对应法兰进行组装，要求：间隙3~4mm，错边在1.5mm以下，氩弧焊打底，全熔透结构。焊接完成后送无损检测，检验标准RT≥（）%，Ⅲ级合格。Assemblethegroovemachinednozzlewiththecorrespondingflange，requirements:thegapis3~4mm,thestaggeredsideislessthan1.5mm,argonarcbottoming,fullpenetrationstructure.Afterwelding,havinganon-destructivetesting,theinspectionstandardsisRT≥()class,IIIqualified.支座点焊Supportswelding1.按图对支座的底板、筋板、立板进行组装前的检查。Inaccordancewithdrawings,inspectthesupportsbackplane,ribs,riserbeforeassembling.2.组装各部件，点固，加支撑件等，焊接。Assembleeverycomponent,solidpoint,supportpieces,andwelding.接管支座与壳体组装Nozzlesupportsandshellassembling1.按先前标出的0°、90°、180°、270°方位点,延长在壳体上。Baseonthepreviouslymarked0°,90°,180°,270compasspoints°,extendingtothehcase.2.画出接管、支座，预开孔，安装位置，即坐标点。Drawthenozzle,supports,pre-openings,theinstallationlocation,thatis,thecoordinatesofpoints3.检验合格后，开孔，然后打上坡口，角度为外坡口30°AfterInspection,opening,thengrooving,theangleoftheoutergrooveis30°4.组对接管与壳体，组装前，接管必须将补强圈带上固定好，一起装配。Connectnozzletoshell,beforeassembling,thenozzlemustfixthereinforcementring,alongwiththeequipment.5.接管与壳体组对间隙为2~3mm，且间隙均匀。Thegapofthenozzleandshellis2~3mm,andthegapisuniform6.焊接完毕后，内接管须清根封底，焊缝打磨与母材齐，并倒2×45°圆角。Afterwelding,tonozzlerequirestocleartherootofthebackcover,weldandpolisetoensurethebasem