304不銹鋼管材擠壓過(guò)程的有限元模擬研究.pdf

1、（類別：全日制碩士研究生題目：304不銹鋼管材擠壓過(guò)程的有限元模擬研究類別：全日制碩士研究生題目：304不銹鋼管材擠壓過(guò)程的有限元模擬研究英文題目：英文題目：ResearchonFEMSimulationofextrusionprocessof304Stainlesssteeltube研究生：吳桂秀學(xué)科名稱：材料加工工程指導(dǎo)教師：郝新教授研究生：吳桂秀學(xué)科名稱：材料加工工程指導(dǎo)教師：郝新教授二○一○年六月二○一○年六月碩士學(xué)位論文碩士學(xué)

2、位論文分類號(hào):學(xué)校代碼:10128分類號(hào):學(xué)校代碼:10128UDC:學(xué)號(hào):20071242學(xué)號(hào):20071242AbstractTheapplicationrangeofthelargescaleseamlesssteeltubebecomeslargerlargersodoesthegapofmarketdem。FChina，themajityofthelargeseamlesssteeltubealmostdependonimpt

3、，withhighprice。InnerMongoliaNthHeavyIndustryCompanyhasalreadysuccessfuldevelopedthewldslargest360MNmetalverticalextrusionmachine，sowestudytheresearchonFEMsimulationofextrusionprocessof304Stainlesssteeltube。Accdingtotheac

4、teristicsof304stainlesssteel，wecanuseUGsoftwaretodesignbilletthethreedimensionalmodel，savethemasthefilefmatofSTPSTEP，changetheSTPSTEPfilesintofmatofSHLbyQFM3Dpreprocess，theninputSHLfilesintointerfacetogetthethreedimensio

5、nalsolidmodel。Settheprocessparametersofthesimulationbefesimulation，thenusetheQFM3Dsoftwaretomakefiniteelementsimulateonbilletlikeaircooling、upsetting、punching、perfationextrusion。Inthisresearchsubject，wedoexperimentson304

6、stainlesssteeltubematerialdifferenttechnicalparametersfthem，thenobtainsomereferencefactsfromthefmingprocesssuchasthedistributionoftemperaturefield，lawofmetalflow，fmingload—timecurvesoon。Astofurtherimprovetheprocesswemodi

7、fythemodelresettechniqueparametersaccdingtothereasonswhatleadthedefectsresimulatetillultimatelygetareasonableconsummatefmingprocess—thethirdprocess，thatistosay，thethirdprocessnamelytheunilateralclearancebetweenthecontain

8、ertheextrudingcushionis1.0mmPressureis100mmthefrictioncoefficientoftheglasslubricantis0.03。。Actualproductionverificationhasbeenmade，withdesigninghotextrusiondieswhichisbasedonthereasonableprocess。Theresultsshowthatwhenth

9、eextrusionpressureis358.86MNlargeseamlesstubewithexternaldiameterof580，insidediameterof350lengthof6506whichmeetstherequirementcanbeproduced.Itfurtherprovesthatthepracticalproductionsbasicallymatchtheresultsofthesimulatio