铜扁线连续挤压缺陷分析及工模具的优化

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Casting·Forging·Welding《》20103923,,(,244000):,DEFORM。,、,,、,,;,,,。:;;DEFORM:TG376.3:A:1001-3814(2010)23-0213-03DefectAnalysisonCopperFlatWireinContinuousExtrusionandItsOptimizingDesignofDieZHANGHongyun,ZHANGJinbiao,XIEBo(Dept.ofMechanicalEngineering,TonglingUniversity,Tongling244000,China)Abstract:Inviewofcommondefectsofcopperflatwireincoppermaterialfactory,thecontinuousextrusionwassimulatedusingfiniteelementanalysissoftwareDEFORM.Thedefectsincontinuousextrusion,suchasbackwardshift,difficultbiting,heavingandoverflowingofbillet,wereanalyzedbynumericalsimulation,thenfeasiblesolvingmeasureswerefoundout,forinstance,theimprovementofwheelgrooveandplugstructure,optimizationofprocessparameters.Alltheimprovementschemescutdowntestingperiod,greatlyreduceexperimentcost;usingtheoptimalprocess,thedefectsareresolved,thequalifiedproductsareproduced,theexcellenteconomicbenefitisreceived.Keywords:continuousextrusion;copperflatwire;DEFORM,1。,。,[1-4]。,,,20℃400~600℃。,,。:①;②;③,。,。1,,。1.11.1.1,,,2(a)(b)。,,,,、,,。DEFORM,1Fig.1Workprincipleofcontinuousextrusionofcopperflatwire:2010-10-06:(2009tlxy26):(1975-),,,,,:;:13856253420;E-mail:hongyunzh@163.com213Casting·Forging·Welding201012HotWorkingTechnology2010,Vol.39,No.232(b),。,,,,,。1.1.2,。,,3(a)。,,,。,,,,;,,,,,。,,,,3(b)。1.21.2.1,,,,,4。DEFORM,,,,“”。“”,,,。,。,,,5,。,、,,。1.2.2,、,,-[5],6。,,。,(a)(b)2Fig.2Thedifficultbitingofbilletindownextrudingcourse(a)(b)3Fig.3Thedifficultbittingofbilletindownextrudingcourse4Fig.4Theheavingofbillet5Fig.5Nofullfillingofbillet6Fig.6Overflowingofbilletatlaterperiodofextruding214Casting·Forging·Welding《》20103923;,,,。22.1,7(b),,,[3]。7(a)(b),(b),。,8,,。2.2,。,,,,。,,,,,,。2.3,,2(b);,,,3(a)。,4~6mm。,“”,,,。,。,,,5,。,、,,。,。3,DEFORM。,、,,、,,;,。:[1],,,.[J].,2010,(3):73-76.[2],,,.DEFORM[J].,2008,37(8):88-91.[3].[J].,2008,(1):48-50.[4].3D[D].:,2001.[5].[D].:,2006.(a)(b)7Fig.7Theshapesoftwokindsofplugs(a)(b)8Fig.8Theoverflowingundertwokindsofplugss215

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