HDPE管道焊接方案(中英文版)

（图像高绝对值1.8com）(中文宋体，英文Arial，字号10)标书母版江苏江都建设集团有限公司Page1of10(中文宋体，英文Arial，字号10)，页边距：左右1.8com、上边3.2cm、下边2.2cm、装订线1cm，页眉0.8、页脚1.2cm)1.1.1HDPEPipingFusionWeldingPlanandRegulationsHDPE管道熔接方案及规程1.1.1.1HDPEpipingfusionweldingproceduresHDPE管道的熔接流程1.1.1.2WeldingOperation焊接操作Heatfusionbondingisacombinationoftemperatureandforceresultingintwomatingsurfacesflowingtogethertoproduceajoint.Fusionbondingoccurswhenthejointcoolsbelowthemelttemperatureofthematerial.Thereisatemperaturerangewithinwhichanyparticularmaterialmaybesatisfactorilyjoined.Thespecifiedtemperatureusedrequiresconsiderationofthepropertiesofthespecificmaterial,thefusionequipmentbeingusedandtheweldingenvironment.热熔焊接是在两个需连接的表面利用温度和用力挤压的方法将其粘接形成一个接缝。当接缝冷却并低于材料的熔化温度时就形成了热熔连接。对于特殊的材料，会在一个温度范围内产生热熔连接。一种材料的热熔温度应考虑该种材料的特性，使用的热熔及焊接环境。1.1.1.3Theoperationscanbesummarizedasfollows:操作步骤：Thealignmentofthepipe管道找正Theshavingofthesurfacesofthepipeends修整管端表面ColdmatchingoftheHDPEpipes将HDPE管对齐Cleaningofsurfaces清洁管道表面Heatingofsurfaces表面加热Fusionofsurfaces表面熔融QualificationauditAndinspection资质考核与审查Surfaceheating表面加热ProcesscardFabrication制定工艺卡Pipingfusionwelding管道熔融Repairandcleaningforjointport修整、清洁接口表面NDEtestingNDE检测SurfaceinspectionandRecording外表检查并记录Fusionweldingportcooling熔接口冷却（图像高绝对值1.8com）(中文宋体，英文Arial，字号10)标书母版江苏江都建设集团有限公司Page2of10(中文宋体，英文Arial，字号10)，页边距：左右1.8com、上边3.2cm、下边2.2cm、装订线1cm，页眉0.8、页脚1.2cm)Coolingofweldjoint焊接接口冷却1.1.1.4Theparametersusedduringweldingare:焊接所用到的参数：pressure(Pressureduringheating)inMpa,加热压力用MpaBead-upheightinmm,加热高度用mmHeatsoakingtime(Timeofheatingunderpressurereleasedcondition)inseconds,吸热时间(在降压条件下加热的时间)用秒Heatsoakingpressure(Pressureduringheatingunderpressurereleasedcondition)inMpa,吸热压力(在降压条件下的压力)用MpaTransfertime(SwitchingTime)inseconds,切换时间用秒Timeofreachingthefusionpressureinseconds,达到热熔压力的时间用秒FusionpressureinMpa,热熔压力用MpaCoolingtimeinminutes.冷却时间用分钟1.1.1.5WeldingPreparation焊接准备ThewelderandpipefitterworkingonHDPEpipeshallbetrainedbytheweldingmachinemanufacturer.TheworkingshallbedoneafterthePMCqualificationinspection.参加HDPE管道安装施工的焊工和管工都必须经管道生产厂或焊机生产厂的培训。经管理方考核合格后方可持证上岗。Thisistoensure,whethertheweldingmachineoperationconditionwillsatisfytheweldingrequirement.Forexample,checkwhetherthereisanyfastenerforholderismissingorloose.Checkwhethertheelectricalconnectioniscorrect/working,theoilinhydrauliccylinderisenough,thepowersupplyismatchingwiththemachinerequirement,theheatingplatematchthevisualinspectionrequirement(whetherthecoatingofplatedamaged)andperformtrialruntestingfortheshaverandoilpump.焊接准备工作是确保焊机的工作条件满足焊接要求。检查事项包括：检查是否有卡具未紧固。检查电气连接是否正确，液压筒里的油够不够，电源供电是否符合焊机要求，加热板是否符合外观检查的要求(加热板的涂层是否有损坏)，对铣刀和油泵进行试运行。Aftercheckingtheweldingmachineoperationcondition,fixthecorrectsizeholderonthemachinetomatchwiththeouterdiameterofthepipetobewelded.Setthetemperatureoftheheatingplateonthermostat.Usesoftpaperorclothanddiponalcoholtocleantheheatingplatesurface.PayattentiontoavoiddamageofPTFEadhesivepreventionlayer.检查完焊机的操作条件后，在焊机上固定和需焊接的管道外径相匹配的夹具。在温度调节器上设定加热板的温度。用柔软的纸或布浸泡酒精后清洗加热板表面。注意不能损坏PTFE防粘接层。1.1.1.6管道焊接ASettingofHDPEPipingComponentforWelding放置HDPE管Thepipesmustbealignedwhentheyareclampedintotheweldingmachineinsuch（图像高绝对值1.8com）(中文宋体，英文Arial，字号10)标书母版江苏江都建设集团有限公司Page3of10(中文宋体，英文Arial，字号10)，页边距：左右1.8com、上边3.2cm、下边2.2cm、装订线1cm，页眉0.8、页脚1.2cm)awaythatthesurfacesareinthesameplane(parallel)toeachother.TheHDPEpipescanbepositioneddirectlyintotheweldingmachine.Installcorrectadapterinsertforthesizeofpipediametertobeusedandtightenthemtothemachine.当管道放入焊机固定时必须进行找正以使其表面都在同一平面上(平行)。HDPE管可直接入焊机。装入和管道尺寸相匹配的适配器并固定。Positionthepipeinawaythatapprox.20~50mmisprotrudingbehindthelastclamp.Bydoingthis,wewillhaveapprox.5to15mmtoshavefrom,andtheremaining15to35mmshouldbesufficientforwelding.固定管道时，管子应伸出最后一个卡具约20~50mm，这样，有约5~15mm可以铣削，剩余的15~35mm用于焊接。Oncethepipehasbeenplacedinposition,thetopclampscanbeclosed.Itisimportanttotightenthetopclampnutsevenlyinordertogetatotallycircularpipe.Then,makethefirstcoldmatching(pressthetwopipestoeachother)andchecktheamountofshavingthatwillberequired.管子就位后，顶端的卡具就可以固定了。重要的是将顶部卡具的螺栓均匀地上紧以保证管子不变形。然后，进行第一次冷对口(将两段管子合拢并加以适当的压力)并检查需铣削的厚度。BShavingofSurface铣削管子表面Afterthecoldmatchingiscompleted,openupthepipesandintroducetheshaver.Turntheshaveronandadjusttosuitablespeed.冷对口结束后，放开管子，置入铣刀，打开铣刀电源形状并调节到适当的速度。Pressthetwopipestogether,andshaveuntilacontinuousstripofHDPEispeelingoffonbothsidesoftheshaver.再合拢管材两端，并加以适当的压力，直到两端均有连续的切屑出现。Thethicknessofthecut-offmaterialshallbe0.5~1.0mm.Thethicknesscanbeadjustedbyadjustingtheheightofthecutterandhydraulicjig.切屑厚度应为0.5mm左右。切屑厚度可通过调节铣刀片和液压夹具的高度来进行调整。Onceconstantpeelingoffisobserved,releasethepressureonthepipesandseparatethepipes.Donotturnofftheshaveruntilthepipesareapart.Iftheshaverisstoppedduringshaving,theshaverwillcreateanendcut-markandtheshavingoperationwillhavetoberepeated.出现连续切屑后，撤掉压力并分开管子。管子分开后才能关闭铣刀电源。如果在铣削过程中关闭铣刀，管端上会出现切痕，并且该管段需重新铣削。Removetheshaver,matchthepipesagain,andcheckthepipeforproperalignment.取出铣刀，再次合拢两管，检查两端的对齐情况。Sometimes,evenwhencontinuouspeelingoffisachievedoneachsideoftheshaver,thepipesdonotmatchproperly.Thisisnormallyduetot