錐形雙螺桿擠出機(jī)固體輸送過程研究.pdf

1、北京化工大學(xué)碩士學(xué)位論文錐形雙螺桿擠出機(jī)固體輸送過程研究姓名：苑煒申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械設(shè)計(jì)及理論指導(dǎo)教師：馮連勛2000.5.1北京化工大學(xué)碩【j論文ABSTRACTBecauseoftheparticulargeometrystructureoftheconicaltwinscrewextruder，ithasbeenwidelyusedintheplasticindustryespeciallyintheprocessing

2、oftheUPVC，whichisoneofthemostimportantplasticmaterialsButtherewerelittlepaperissuedinthisareaSoitissignificanttoinvestigateitsbasictheoryFirstwemadesomevisualimprovementonthebasisofourDresentmachineWemadeexperimentsofext

3、rudingunderdifferentcollditionsobservedthemovementofthematerialintheextruderwiththetransparentbarrel，andinterpreteditinmacroscopicviewsBecauseinthesolidtransportationpartoftheconicaltwin—screwextrudermaterialsprocessedar

4、eintheformsofincompactgrainSoourfirststudyistoconfirmitsphysicalcharacterWefoundandanalyzedthedatesandtheirchangingtendencyofitsspecificheat，densityandthecoefficientofheattransferetcSecondly，westudythetemperaturefieldofs

5、olidtransportationwiththehelpoftheANSYSsoftwareWebuiltthefinite—elementmodelandmadeprogramstogetthemodelstoobtainthetemperaturefieldofthesolidtransportationpartoftheconictwin—screwextruderExperimentsareusedtoconfirmthere