克令吊筒体安装焊接工艺

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1、克令吊筒体安装焊接工艺共5页第5页克令吊筒体安装焊接工艺共5页第5页克令吊筒体安装焊接工艺(WELDINGPROCEDUREOFCRANEPEDESTAL)1.安装前测量(MEASUREMENTBEFOREWELDING)克令吊筒体在安装焊接前必须对厂家提供的筒体法兰平面度进行测量，来确保厂家供货部分是满足精度要求的。测量由专业人员，采用专用的仪器进行，并留有测量报告。法兰平面度的公差要求为0.2mm.测量合格后方可进行安装焊接。如精度要求超出范围，要及时与服务商进行联系。Beforewelding,theflangeflatness

2、shouldbemeasuredbyshipyard,insuregoodtoleranceisprovidedfrommaker.Measurementiscompeletedbyprofessionalstaff,andthespecialtoolsisusedandmeasurementreportwillbecompeletedbyshipyard.Toleranceofflangeflatnessisnotmorethan0.2mm.Itcanbeinstalledbygoodtalerance,otherwiseitsho

3、uldbeconnectedwithmakerontime.2.焊接材料的选用(WELDINGCOMSUMABLESELECTION)焊接材料根据等级高的母材进行选取。船厂制作的筒体材料为DH36级30mm，坡口形式参见图纸，焊脚高度参见焊接规格表。Weldingcomsumableisselectedaccordwithhighergradeparentmaterial.Thematerialoffoundationisgrade“E”and50mmthickness，Thegroovetypeseeworkingdrawingan

4、dweldingthroatseeweldingscheduletable.克令吊筒体安装焊接工艺共5页第5页1.安装及焊接（INSTALLATIONANDWELDING）1.1检查克令吊底座的标识，确认是否与基座筒体相符合。并核对底座的方向性是否正确。Toinspectthemarkofthepedestalandconfirmthenumberisaccordwithfoundation.Checkthedirection1.2为防止装配时出现问题，应在焊接前检验基座的尺寸，对筒体和基座进行冷装配，禁止挤压基座来配合筒体的尺寸。T

5、oavoidanyproblemhappened,thesizeoffoundationshouldbemeasured.Toassemblewithoutanyhotworking,toprohibitanyextrusionforfitting1.3焊接时由2名焊接人员同时进行。2weldersareworkingatthesametime.1.4焊丝的选用正确，焊条妥善保管防止受潮。Weldingcomsumableiscerrectseletion,itshouldbegoodstorageandkeepingdry.1.5焊

6、接前筒体与基座不得有间隙。Thereshouldbenoanydistancebetweenfoundationandpedestal。3.6基座与筒体的定位点焊，焊缝长约70mm，相互间距约300mm。Spotweldingisusedforfixingofpedestal,weldingseamis70mmisused,and300mmdistanceisbetweenspotweldingseam.3.7焊缝必须全熔透，依据船级社要求在焊接完成48小时后做100%U.T和M.T无损探伤测试。Fullpennetractionwe

7、ldingisusedand100%U.TandM.Tshouldbecompeletedafter48houraccordwithClassrequirements.克令吊筒体安装焊接工艺共5页第5页3.8焊接顺序按照如图所示的进行。Toweldinsequenceasfllow:A,B表示2位电焊人员。(“A”and“B”mean2welders)3.9整个焊接过程中对法兰面平整度进行监控。Tosupervisorycontroltheflatnessoftheflangeofpedestalthroughouttheweldin

8、g.4焊接后对基座的检验(INSPECTIONAFTERWELDING)基座平面度的公差对回转齿圈的装配至关重要，若上表面的平整度超差，将会影响回转齿圈的寿命。由于设备商队吊机有质量保证,因此基座法兰面平整度必须在公差范