建模与优化为20 H的冷连轧.doc

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1、附录-外文翻译曦劲奖薤肯苡美揲固鲇叻靖Modelingandoptimizationfora20-hcoldrollingmill媒蒺艳鞲柿恭狮搽殉寒淘环QUALITYanditsreproducibilityaredominantcriteriaforcoldrolledproducts.Inparticular,highstripsurfacequalitycanbeachievedwithspecialmillarrangementssuchasthe20-hmill.Thistypeofmillusessmallworkrollsinc

2、ontactwiththestrip,thatarekeptinplacewithavarietyofintermediateandbackuprolls.Theuseofdifferentactuatorswhich,inpart,onlyactindirectlytoaffecttherollbitegeometry,makesthepresettingofthemillwithregardtostripthicknessandflatnessacomplextask.诽重瘀睿榻钠噬蝻河吝城泾Thisarticledescribesamod

3、eltheobjectiveofwhichisoptimizingtheentirerollingprocessina20-hmill.Resultsobtainedfromseveralon-lineapplicationsarediscussed.狒笸哎於绽溯残仅溷膜虏衣Aclosedsendzimirmillarrangement,showninFig.1,illustratesthemainactuatorsthataffectrollbitegeometrywithregardtostripthicknessandglatness.S

4、ideeccentricslocatedatthebackuprollsareusedtoadjusttheoverallpositionofthecorrespondingrollaxisoverawiderangewhich,indirectly,adjuststherollgapgeometrywithregardtothemillpasslineandstripthickness.Sideeccentricsmaybemechanicallyorelectricallycoupled.Crowneccentricsareavailabl

5、eatseverallocationsoverthebarrellength.Those,typicallyonupperbackuprolls,arecapableofprovidingspecialrollgapcontours.Theymatchthegaptotheprofileofthestripenteringthemill.Crowneccentricsarethemajoractuatorsforachievingstripflatness.Shiftable,firstintermediaterollsarealsoshape

6、actuators;theymainlyserveformodificationsinthestripedgeareausingataperedrollprofile.蜞握刃瑚貔莼襦昙榈鹪孤檫Measurementofmillgeometryisavailableonlyindirectlythroughtherotationofthesideandcrowneccentricsandthroughthepositionofthefirstintermediaterolls.朗狠踢矫氨汕宅是舱剡慢凉Considerationofmillspri

7、ngandelasticdeformationeffectsinthestackleadstotherollgapgeometry.Accountingformillspringandelasticdeformationrequiresknowledgeoftherollseparatingforcewhich,inaclosed20-hmill,ismeasuredindirectlythroughtheadjustmentpressureneededforthemainsideeccentrics.Apartfromhysteresisef

8、fects,theeffectsofthevariablegeometrymakethisindirectmeasurementcritical.峤朐