小方坯連鑄機拉速自動調節(jié)及二冷水系統(tǒng)的優(yōu)化.pdf

1、東北大學碩士學位論文小方坯連鑄機拉速自動調節(jié)及二冷水系統(tǒng)的優(yōu)化姓名：孫曉艷申請學位級別：碩士專業(yè)：檢測技術及自動化裝置指導教師：謝植2002.1.1東北大學碩士學位論文ABsTRACTABSTRACTThecontinuouscastingtundish，temperatureisoneoftheimportantvariablesofthecastingproductionSincethemoltensteeltemperaturei

2、nthetundishcan’tbemeasuredcontinuouslycastingtemperaturehaslongnotparticipatedinthecontinuouscastingautomationsystemBasedontheapplicationoftheblackbodycavitytemperatureinstrument，castingspeedcallberegulatedtotheoptimumva

3、lueaccordingtothetemperature，andsuperheatCallalsobeaddedtothesecondarycoolingsystemtocompensatethesuperheatinfluenceoftheshellthicknessandbilletsurfacetemperatureInthepaperaonedimensionalmathematicalrealtimeheatchansferm

4、odelispresentedbasedontheliRlebilletcontinuouscastingmachineofNanjinIronandSteelcompanyUsingtherealcastingvariables，themodelsimulatesthesolidificationprocessofstrandduringcontinuouscasting，thestrandtemperatureandsolidshe

5、llthicknessprofilealongthemachineworkingindifferentsuperheatandcastingspeedarecalculatedBymathematicalanalyzing，therelationshipbetweenthesuperheatandcastingspeedandsuperheatfeed—forwardforsecondcoolingcoefficientareconfi

6、rmedAfterstudiedthecontinuouscastingautomationsystemdesignedbyDANIELIinNanjanIronandSteelcompanybasedontheresultsofthemodelcalculating，combinedwiththeproductingpractice，thereasonablecastingspeedregulationandsecondarycool

7、ingautomationoptimumprojectareestablishedBecausethemoltensteelprovidedbytheelectricalfumacehasafluctuatingtemperatureandtherehavenotheatingmachinefortundish，castingspeedcanberegulatedtotheoptimumvalueaccordingtothesuperh

8、eatwhenmouldleveliscontrolledbyelectricstopperandcorrelativeinfluencefactorshavebeentreatedspeciallytoensurethesystemttlnstablyandreliablySecondarycoolingsystemaddssuperheattotheformalserialautomationsystemasafeedforward