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1、-------AbstractThemachincalexpandingisthekeylinkinthehighqualityheavy-caliberstraightseamsubmerged-arcweldingtubeproduction,themechanicalexpandingmilldesignandthemanufacturecraftarecomplex,atthesametimetheWesterncountrysenforcethetechnicalstrictblockad
2、etoourcountry,atpresentourcountrystillcan’tgraspsthetechniqueofmanufactureofthelarge-scalemechanicalexpandingmill,forthisviewItakethoroughresearchoftheexpandingmilldesigntechniqueofmanufacture,itwillhasapracticalsignificancetothehighqualityheavy-calibe
3、rpipelinesteelpipeproductionforourcountry.Thisarticlefirstcalculatesthestrengthandtravelingscheduleofthemodelφ×mmstraightseamweldedpipecompletely,whichellipticityis5%,the5084materialisX70,3%expandingrateofthediameter,fromtheoretically,andweredividedthe
4、travelingscheduleintofourstagetodistributecomputation,whichareexpandingspatialtravelingschedule、expandingentireroundtravelingschedule、expandingdistortiontravelingschedule、thecompensationexpandingsnappingbacktravelingschedule，thus,determinedthedesignvar
5、iableofthe-----------expandingpowerpart(pistoncylinder);Takethevaluesimulationasthemethod,andusethemonodromycyclicmethodtodeterminethevaluabledesignvariablescopeoftheexpandingexecutivecomponentmold(theheadoftheexpanding),taketheresidualstressandtheelli
6、pticityofexpandsthediametertheunfinishedpipingasthegoal,useingtheorthogonalexperimentmethodtoanalysisandobtainthemoldparameteroptimumcompositionextremely.Thisarticledesigntheassemblydrawingandthedetaildrawingoftheexperimentalequipment,completedthedesig
7、nofthehydraulicsystemwhichishighandlowpressuredoublepumpfeeded,fivespeedchange,the萬方數(shù)據(jù)-----------high-pressuredoverflowtokeeppress,completedthedesignoftheelectricitycontrolsystem.Usingthefiniteelementsoftware《I-DEAS》,《MARC》totwokindofexperimentalinstal
8、lationswhichdesignedcarryonanalysingtomodellingandvaluesimulation,andstudydistortionandtheequivalentstressstraindistributionconditionofthevariouskeycomponents,andcarryontheplancontrast.Theresultindicatedthat,usingtheTchute6°conethedesig
