五孔式氧槍噴頭底座成形工藝及模具失效研究.pdf

1、圖書分類號UDg31TG3762密級韭蜜碩士學位論文五孔式氧槍噴頭底座成形工藝及模具失效研究張麗霞指導教師(姓名、職稱)壺墼f副熬援2申請學位級別王堂亟專業(yè)名稱撾塾地王工猩論文提交日期墊QZ年!月12日論文答辯日期2盟Z年璺月Z日學位授予日期——年——月——日論文評閱人漁盛皇麴援奎堡盛塾攫答辯委員會主席奎丞堂熬攮2007年4月5日中北大學學位論文TheStudyonExtrusionFormingTechnologyanddieFail

2、ureofthepedestalof5holespraynozzleofoxygenlanceAbstractTaketheextrusionofthepedestalof5holespraynozzleofoxygenlanceastheresearchobjectthenumericalsimulationofformingprocessandworkingconditionofdiealestudiedinthispaperThe

3、technologyoftheextrudedparthasbeenstipulated，andthefailureanalysishasbeenstudiedThoseareinfavorofincreasingthepartandtheservicelifeofdieFirstlythegeometricmodelofdieandrigid—plasticfiniteelementmodelofsimulationarebuilta

4、ccordingtothedemandofsimulationanalysis，Thedefinitionofinterfaceconditionbetweendieandworkpieee，theaddingofmaterialparameters，formingvelocityofmachineandmesh，isalsodoneitisthebaseofthefollowingcomputersimulationThroughnu

5、mericalsimulationoffiniteelementmethod(FEM)thecourseofextrusionofthespraynozzleofoxygenlanceissimulatedTheformingoftheblank，deformationtemperature，deformationrateandfrictionarediscussedwhichimpactequivalentstrain，equival

6、entstressandextrusionforce。Theanalysisshowedthatitisbeneficialtoformingwhenthediameterofblankis340ram，theextrusiontemperatureis850“C，andtheextrusionspeedis5mm／sBasedontheresultoftheFEMsimulation，theextrudedformingtechnol

7、ogyofthespraynozzleofoxygenlancehasbeenstipulated，andthephysicalexperimentisachievedTheresultshowsthatitisfeasibletoproducethespraynozzleofoxygenlancewithextrusioninplaceofthetraditionaltechnologywhichimprovedtheutilizat