整辊内嵌式板形检测辊瞬态温度场与应力场分析.pdf

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1、第49卷第5期Vo1．49，No．5钢铁2O14年5月IronandStee1Mav2014整辊内嵌式板形检测辊瞬态温度场与应力场分析吴海淼，刘宏民，于丙强，杨利坡(1．燕山大学国家冷轧板带装备及工艺工程技术研究中心，河北秦皇岛066004；2．河北工程大学机电学院，河北邯郸056038)摘要：在冷轧可逆轧制的不同道次，与板形检测辊接触的带钢温度差异显著，使得检测辊的温度场和应力场不稳定。运用有限元软件ANSYS建立了板形检测辊的热力耦合模型，分析了轧制过程中板形检测辊的瞬态温度场和应力场。结果表明，轧制开始后接触带钢的热量由辊体外表面向内表面逐渐传递，传感器正上方的辊体外表面温度

2、上升最快，并在1940S达到温度最大值135℃；骨架顶部与辊体内孔面的接触热阻使传感器的温度上升较慢，骨架顶部在2280S达到温度最大值134℃；板形检测辊的最大应力发生在与骨架顶部接触的辊体内孔面上，其在940slg到最大值301MPa，满足材料强度的许用应力要求。通过模拟分析结果与现场实测数据对比，证明了有限元分析模型的正确性。关键词：可逆轧制；检测辊；温度场；应力场；有限元文献标志码：A文章编号：0449—749X(2014)05—0047—05TransientTemperatureFieldandStressFieldAnalysis0fEntireRoilerEmbed

3、dedShapemeterRollWUHai—miao，LIUHong—min，YUBing—qiang，YANGLi—po(1．NationalEngineeringResearchCenterforEquipmentandTechnologyofColdRollingStrip，YanshanUniversity，Qinhuangdao066004，Hebei，China；2．CollegeofMechanicalandElectricalEngineering，HebeiUniversityofEngineering，Handan056038，Hebei，China)Abst

4、ract：Thetemperatureofcold—rolledstripcontactingwiththeshapemeterrollisobviouslydifferentincoldre—versiblerolling’Sdifferentpasses．Therefore，thetemperaturefieldandstressfieldofshapemeterrollareveryinsta—ble．UsingfiniteelementsoftwareANSYS．thecoupledthermo—mechanicalmodelwasestablishedtOanalyzet

5、heshapemeterroll’Stransienttemperaturefieldandstressfieldincoldreversiblerollingprocess．Analysisresultsshowthatthecontactingstrip’Sheattransfersgraduallyfromrollbody’SoutsidesurfacetOinnerholesurfaceinrollingprocess，andthetemperatureofrollbody’Soutsidesurfacerightabovethesensorrisesfastestanda

6、ttainsmaximumvalueof135Cafter1940seconds’rolling．Becauseofthetherma1contactresistanceofsensorframework’Stopsurfaceandrollbody’Sinnerholesurface，thesensor’Stemperaturerisesslowly，andthetemperatureofframe—work’Stopsurfaceattainsmaximumvalueof134℃after2280seconds’rolling．Shapemeterrollbody’Smaxim

7、umstressoccursatthecontactareaofrollbody’Sinnerholesurfaceandsensorframework’Stopsurface．Themaxi—mumvalueof301MPaoccursafter940seconds’rolling，anditcanfulfillthematerialstrengthrequirement．Corn—parisonsofsimulationresultswithfieldtestda