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ID:36564433
大小:4.84 MB
页数:82页
时间:2019-05-12
《铝热连轧跑偏和最佳张力制度的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中南大学硕士学位论文铝热连轧跑偏和最佳张力制度的研究姓名:王晓崇申请学位级别:硕士专业:机械设计及理论指导教师:刘义伦20080122ABSTRACTThe“1+4’’HotTandemRollingLineadoptedproven,advancedaluminumsstriphotrollingtechniqueintheworldoftoday.Itisallonlynew—builthotmndemrollinglineamongtheworldaluminumsfabricationfieldsinrecent10years.Theconstructio
2、nofthislinehasfilledavacancythatthere’SnohottandemrollingtechnologyinChina’Saluminumsfabricationindustry.ItprovidestremendousmotivationtotheprogressofChina’Saluminumsfabricationfacilitiesandtechnology.Butrunningdeviationoftenoccursonthehotfinishingmill,especiallyrollingultra.thinstrip
3、whichisbelow5milimeters.Runningdeviationnotonlyresultsininstabilityofproductline,butalsodirectlyinfluencestheoutputofrollingprocess,qualityofproduct,lifeofequipmentandSOon.Anditalsoaffectsthenormalprocessofcoiling.Soitisimportanttostudytheproblemofrunningdeviation.Firstlyrunningdeviat
4、ionisstudiedbyusingvariationmethod.Takingrollingregionasresearchobject,thetransversedistributionoftheentryandexitthicknessissimulatedwiththeunsymmetricalfunction.Atthesametimerollingdeviationisused.ThefunctionofmentallateraldisplacementatexitiSderivedfromEulerdifferentialequationbythe
5、minimumpotentialenergyprinciple.Itisacaseofunsymmetricalness.Atlastthevalueofrunningdeviationiscalculated,andthevariationruleisprimarilydiscussed.Somefactorsaresimplifiedreasonablyforthevariationmethod.Butitwillnaturallyaffecttheprecisionoftheresult.Tosolvethisproblemanotherwayisusedb
6、yconsideringasmanyfactorsaspossible.Atthesametimethecombinedfrictiontheoryandplasticyieldcriterionarereferredto.FinallythenumericalsolutioniSobtainedbyusingPowellmethodwhichisbasedonminimumpotentialenergyprinciple..T11esimulationofthe“1“’’HotTandemRollingLineiscarriedoutbyusingthetheo
7、ryobtainedfromthispaper.Afteritsresults’comparisontosomerelateddocument.weCallconcludethecorrectnessofthetheoryinthisPaper.ThentherelationshipbetweentensionandmentallateralⅡdisplacementisstudied,whichmeansbychangingthefIorthtension,backtensionandthedifferenceoftensiontodiscusstheruleo
8、frunn
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