外文翻譯--熱連軋機.doc

ABSTRACTThereareprovidedanevennumberofpairedroll-shifttyperollingmills12a,12bandacontroller16forcontrollingtherollingmills12a,12b.Eachofupperandlowerworkrolls13ofeachoftheroll-shifttyperollingmillshasapredeterminedcrowncurveandhasarollshiftingmechanism14foraxiallyshiftingtheupperandthelowerworkrollsrelativetoeachother.Thecontroller16determinesashiftamountofeachrollingmillinordertoobtainapredeterminedcrosssectionshapeofasteelplate,shiftstheworkrollsoftherollingmillontheupstreamsidepairedeveryrollingcoiltotherebydispersewearontherollsurface,andmovestheworkrollsoftherollingmillonthedownstreamsideofthepairinapredetermineddirectionbythesamedistance,therebycancelingthechangeinthecrosssectionshapeoftheplatebytheshiftingoperationfortheweardispersion.摘要有一對軋輥軸向移動式軋機12a，12b以及控制軋機12a，12b的控制器16。每組軸向移動的軋輥機中的工作軋輥13的各自上邊緣與下邊緣都有預定的凸邊曲線，同時軋輥移位裝置14用以控制上下工作軋輥彼此間的軸向相對移動?？刂破?6控制每一個軋機的位移量為了獲得鋼板的預定截面形狀，它通過移動軋機每組成對的軋輥中上邊的工作軋輥上的每組成對的軋輥以此來使軋輥的上下表面的離差，同時使軋機成對工作的下方的軋輥在預定的方向上移動同樣的距離，以此通過改變磨軋的離差的過程來撤銷板的截面形狀的變化。1HOTTANDEMROLLINGMILLBACKGROUNDOFTHEINVENTION1.FieldOfTheInventionThepresentinventionrelatestoahottandemrollingmillwhichcanperformbothshapecontrolbyshiftingrollsandweardispersion.2.RelatedBackgroundArtAroll-shifttyperollingmillschematicallyshowninFIG.1(forexample,U.S.Pat.No.5,640,866,JanpanesePatentLaid-OpenNo.7-232202,andthelike)isknownasarollmillusedtoobtainaveryflatplateproduct.Accordingtotheroll-shifttyperollingmill,upperandlowerworkroll1havingconvexandconcavepartsasshowninU.S.Pat.No.5,640,866arealternatelyshiftedintheaxialdirectionoftherolls,androllaplatemember2,therebycontrollingtheshapeincrosssectionoftheplatemember.Ontheotherhand,inanordinaryhotfinishingrollingmill,arollingpartofthesurfaceofarolliswornasthenumberofplateswhicharerolledincreases.Especially,theendpartsoftherollarewornmornthanthecenterpart.Whenaplatetoberollednextiswide,thecrosssectionoftheplatehasashapeinwhichthebothendsarethicker(thosearecalledcatsears)asschematicallyinFIG.2andtherolledshapedeteriorates.1熱連軋機發(fā)明的背景1、發(fā)明的領域本發(fā)明與熱連軋機相關，它通過轉動軋輥以及磨軋離差來控制是板面的形狀。2、相關技術背景圖1所示的是軋輥滾動式軋機的原理簡圖（例如，U.S.Pat.No.5,640,866,JanpanesePatentLaid-OpenNo.7-232202等），它是用來獲取平鋼板產品的軋制設備。根據(jù)軋輥移動式軋機,工作輥1的上部和下部有如圖U.S.Pat.No.5,640,866凸、凹部分是在軸向尺寸交替變化的軋輥。軋制板面2可以控制整個板面的截面形狀。另一方面，一個普通的完備的熱軋機中，軋輥表面軋制部分的外形的磨損是隨著已被軋制鋼板的數(shù)目越來越厲害。特別是，軋輥末端磨損大于中間部分。當下一個待軋鋼板很寬時，鋼板的橫截面會形成兩端厚的形狀（那些被形象地稱為貓耳朵）如簡圖2所示，同時這個卷形會變形。Inaconventionalhotfinishingrollingmill,therefore,thewidthofaplatecannotbefreelychangedandrollingoperationisperformedaccordingtoapredeterminedoperationschedule(calledacoffinschedule)asshowninanexampleofFIG.3.AccordingtotheexampleofFIG.3,theaxisofabscissadenotesthenumberofrollingcoilsafterrollreplacementandtheaxisofordinateshowstherollingwidthofplates.Inordertoobtainanecessaryplatewidth,rollingoperationfornarrowplatesisrepeatedandtherollsarewarmed,andplatemembersarerolledinaccordancewiththeorderofthewiderplatemembers.Othervariousoperationschedulesareusedaccordingtohotfinishingrollinglines.在傳統(tǒng)的熱軋機，要求鋼板的寬度不可以隨意變動，根據(jù)預定的運行流程（所謂的密閉流程）軋制流程正如圖3的例圖所示。根據(jù)圖3的例圖，軸的橫坐標表示通過軋制的軋輥數(shù)目，縱坐標代表軋板的軋制寬度。為了獲取一個需要的軋板寬度，軋制系統(tǒng)將窄軋板重復軋制，軋輥在軋制前要預熱。鋼板的軋制要按照寬鋼板的軋制順序。其他的各種軋制過程依據(jù)熱軋相關規(guī)則。Intheconventionalhotfinishingrollingmill,asmentionedabove,sincetherollingoperationisperformedaccordingtoapredeterminedoperationschedule,thereisaproblemthatschedule-freerollingoperationwhichisperformedirrespectiveoftheplatewidthcannotbeexecuted.上面提到的傳統(tǒng)的熱軋機，由于軋制操作是根據(jù)預定的操作流程來執(zhí)行的，那么將導致一個問題，即不考慮鋼板寬度的自由規(guī)程軋制過程降無法執(zhí)行。Consequently,therehasbeenproposedthattheupperandlowerworkrollsareaxiallyshiftedrelativetoeachotherbyusingtheabove-mentionedroll-shifttyperollingmill,therebydispersinglocalwearofthesurfaceoftherollandachievingtheschedule-freerollingoperation.Inthiscase,however,sinceashiftingfunctionisusedtodispersethewearofthesurfaceoftheroll,thereisaproblemthataninherentcontrolofthecrosssectionshapecannotbeperformed.因此，由已經提出的，上下工作輥根據(jù)上述的滾扎軋輥移動式軋機的原理，通過彼此相對的軸向移動，從而分散軋輥表面的磨軋，而實現(xiàn)自由規(guī)程軋制。然而在這種情況下，由于移動的運行使軋輥的表面離差產生，將導致一個不可避免的問題，即截面形狀的控制無法保證。Thatis,hitherto,thefunctionofshiftingtheupperandlowerworkrollsoftheroll-shifttyperollingmillintheaxialdirectionisusedtocontrolthecrosssectionshapeofasteelplate.Theshiftingfunctionis,however,usedfordispersingthewearoftheroll,sothattheshapecannotbecontrolled.Thereisconsequentlyaproblemthattheweardispersionandthecrosssectionshapecontrolareincompatible.這是迄今為止，通過利用軋輥移動式軋機的上下工作軋輥在軸向的移動功能來控制鋼板的截面形狀。然而，這個移動的功能是使軋輥相互錯位，以致無法控制形狀。因此，表面的形狀的不平整性和截面形狀的控制仍存在不相容性問題。SUMMARYOFTHEINVENTIONThepresentinventionisprovidedinordertosolvetheproblems.Thereforeitisanobjectofthepresentinventiontoprovideahottandemrollingmillwhichcanrealizebothofschedule-freerollingoperationbydispersingwearofthesurfaceoftherollandacontrolofacrosssectionshapeofasteelplate.該發(fā)明的概括現(xiàn)今的發(fā)明是為了解決問題。因此本連軋機的發(fā)明，在實現(xiàn)分散軋輥表面的離差的同時，又控制鋼板截面的面積而完成自由規(guī)程軋制。Accordingtothepresentinvention,thereisprovidedahottandemrollingmillhavingroll-shifttyperollingmillsofanevennumberwhicharepairedandacontrollerforcontrollingtherollingmills.Eachofupperandlowerworkrollsofeachoftheroll-shifttyperollingmillshasapredeterminedcrowncurve.Thereisalsoprovidedarollshiftingmechanismforaxiallymovingtheupperandlowerworkrollsrelativetoeachother.Thecontrollerdeterminesashiftamountofeachrollingmillinordertoobtainapredeterminedcrosssectionshapeofasteelplate,shiftstheworkrollsoftherollingmillontheupstreamsideofapairbyapredeterminedamountbyusingtheshiftpositionasacenterforeveryrollingcoiltotherebydispersewearofthesurfaceoftheroll,andmovestheworkrollsoftherollingmillonthedownstreamsideofthepairinapredetermineddirectionbythesamedistance.therebycancelingthechangeinthecrosssectionshapeoftheplatecausedbytheshiftingoperationfortheweardispersion.本發(fā)明所提供的熱連軋機，有兩個成對的軸向移動式軋機和控制軋機的控制器。每個軸向移動式軋機的上下工作輥都有預定的凸度曲線。也提供了使上下工作軋輥在軸向相對彼此的轉移機械裝置。該控制器控制每個軋機的移量為了獲得鋼板的預定橫截面形狀，它通過轉移位置作為中心改變軋機中的一對工作軋輥的上游移量用以分散軋輥的表面離差。同時移動一對下游軋機在工作軋輥在預定方向相同的距離。從而撤銷由磨損離差在移位操作過程中引起的板的截面形狀的改變。Accordingtotheconstructionofthepresentinvention,sincerollingoperationisperformedbyaxiallyshiftingtheworkrollsoftheroll-shifttyperollingmillsofanevennumberwhicharepairedbyusingtheshiftpositiondeterminedtoobtainapredeterminedplatecrownforeveryrollingcoil,thewearofthesurfaceofeachrollcanbedispersed.Further,byperformingtherollingoperationoftherollingmillsontheupstreamanddownstreamsidesinapredetermineddirection(forexample,oppositedirectionorthesamedirection)bythesamedistance,thechangeinthecrosssectionshapeofthesteelplatecausedbytheshiftingoperationtodispersewearoccurringintherollingmillontheupstreamsidecanbecanceledbytherollingmillonthedownstream.Sincetheplatecrowniscontrolledbychangingthecenterpositionoftheschedule-freerollingoperationandthecontrolofthecrosssectionshapeofthesteelplate,thatis,theplatecrowncontrolbythedispersionofthelocalwearoftherollsurfacecanbecompatiblyperformed.根據(jù)本發(fā)明，軋制系統(tǒng)通過成對的軋機的工作軋輥的軸向移位，利用確定位置的轉變來獲得每個扎卷板預定的鋼板凸度，以及各個軋輥表面的離差可以被分離。此外，在軋機軋制系統(tǒng)預定方向（例如,相反的方向或同一方向）上的上、下游移動的同樣距離，由于發(fā)生在軋機在上游的移位操作的分散磨損所導致的鋼板截面的變化可以在軋機的下游所撤銷。由于板的凸度是由自由規(guī)程軋制系統(tǒng)的中心位置變動和鋼板截面形狀的控制的改變，即由軋輥表面的局部磨損離差所導致的板的凸度控制可以妥善地得到解決。Theotherobjectsandadvantageousfeatureofthepresentinventionwillbecomeapparentfromthefollowingdetaileddescriptionwithreferencetotheappendeddrawings.BRIEFDESCRIPTIONOFTHEDRAWINGSFIG.1isaschematicdiagramshowingaconventionalroll-shifttyperollingmill；FIG.2showsanexampleofacrosssectionshapeofaplateduetowearofrolls；FIG.3showsanexampleofoperatingscheduleinaconventionalhottandemrollingmill；FIG.4isadiagramshowingthewholeconstructionofahottandemrollingmillaccordingtothepresentinvention；FIG.5issdiagramexplainingtheprincipleofthepresentinvention；FIG.6Aisadiagramshowingarollshiftstateofanodd-number