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1、萬方數(shù)據ABSTRACTAsselrollingmillwithhigh—precision，expandingitsproductrangeisthemainpurposeofdevelopmentit．ButAsselrollingmillonlyproductformiddleandlargesizethin-walledtube．Andwhenproductthin—walledtube，itiseasytooccuraseriesofproblems，suchas“tubetailtriangle”，“rollingcrackandstoppingst
2、eeltube”，lowerproductionefficiency．So，thispaperusesrollingprocesswithoutmandrel，basedonformerAsselrollingmill，forthepurposetoimprovetherollingprocess，andsatisfywiththesmallsizetubeproductionrequirements．Basedonthereasonablerollingprocessbyexperimenttest，it’Sgoingtodofurtherstudyontha
3、tfeedanglehowtoeffectproductionefficiencyandrollingforce，preliminaryexplorationwithoutmandrelskewrollingprocessrollingforcecalculationmodel，metalflow，stresschange，plasticdeformation，etc．Thissubjectmainlysetabouttothefollow：First，useMarcfiniteelementanalysissoftwaresimulationrollingpr
4、ocesswithoutmandrel，optimizerollingprocessparameter，meetlargerproductionsizerequirementstoreducediameter。Second，throughthefiniteelementsoftwarepreliminarilydeterminedexperimentalparameters，andthanusingtheexperimentresulttotestthesimulationresultandtheorycalculationresultwithrollingfo
5、rceandmoment．Finallyreallyfindtherollingforceandmomenttheorycalculationformulassuitableskewrolling，breakthroughthelimitationsoflongitudinalrollingformulahavebeenused．Three，throughthetest，regressiontoresearchthesimulatedanalysisresultsoffeedanglehowtoeffectrollingstress，circumferentia
6、landaxialrollingspeedandslidingcoefficient，rollingforceandrollingmoment．EspeciallyforincomparisonAsselrollingtubereducingmillcircumferentialandaxialslidingcoefficientcurvetobucketrollerslidingcoefficientcurve．BasedonTheexperimentalresults，theoryandsimulationanalysis，optimizingskewrol
7、lingprocess．11I萬方數(shù)據三輥軋管機無芯棒軋制工藝分析Keywords：Skewrolling；Withoutmandrel；Smal1dimensiontube；Thinwalledtube；Feedangle；Slidingcoefficient；Rollingforceandmornent．萬方數(shù)據目錄第一章緒論??????????????????．11．1本論文課題研究背景及意義??????????????11．1．1國#I'lL管機的發(fā)展??????????????．．11．1．2國內三輥軋機的發(fā)展?????????????．．51．1．3
8、阿塞爾軋管機的優(yōu)缺點??
