ABSTRACTThereareprovidedanevennumberofpairedroll-shifttyperollingmills12a,12bandacontroller16forcontrollingtherollingmills12a,12b.Eachofupperandlowerworkrolls13ofeachoftheroll-shifttyperollingmillshasapredeterminedcrowncurveandhasarollshiftingmechanism14foraxiallyshiftingtheupperandthelowerworkrollsrelativetoeachother.Thecontroller16determinesashiftamountofeachrollingmillinordertoobtainapredeterminedcrosssectionshapeofasteelplate,shiftstheworkrollsoftherollingmillontheupstreamsidepairedeveryrollingcoiltotherebydispersewearontherollsurface,andmovestheworkrollsoftherollingmillonthedownstreamsideofthepairinapredetermineddirectionbythesamedistance,therebycancelingthechangeinthecrosssectionshapeoftheplatebytheshiftingoperationfortheweardispersion.摘要有一對(duì)軋輥軸向移動(dòng)式軋機(jī)12a，12b以及控制軋機(jī)12a，12b的控制器16。每組軸向移動(dòng)的軋輥機(jī)中的工作軋輥13的各自上邊緣與下邊緣都有預(yù)定的凸邊曲線，同時(shí)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(duì)移動(dòng)?？刂破?6控制每一個(gè)軋機(jī)的位移量為了獲得鋼板的預(yù)定截面形狀，它通過(guò)移動(dòng)軋機(jī)每組成對(duì)的軋輥中上邊的工作軋輥上的每組成對(duì)的軋輥以此來(lái)使軋輥的上下表面的離差，同時(shí)使軋機(jī)成對(duì)工作的下方的軋輥在預(yù)定的方向上移動(dòng)同樣的距離，以此通過(guò)改變磨軋的離差的過(guò)程來(lái)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(jī)發(fā)明的背景1、發(fā)明的領(lǐng)域本發(fā)明與熱連軋機(jī)相關(guān)，它通過(guò)轉(zhuǎn)動(dòng)軋輥以及磨軋離差來(lái)控制是板面的形狀。2、相關(guān)技術(shù)背景圖1所示的是軋輥滾動(dòng)式軋機(jī)的原理簡(jiǎn)圖（例如，U.S.Pat.No.5,640,866,JanpanesePatentLaid-OpenNo.7-232202等），它是用來(lái)獲取平鋼板產(chǎn)品的軋制設(shè)備。根據(jù)軋輥移動(dòng)式軋機(jī),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(gè)板面的截面形狀。另一方面，一個(gè)普通的完備的熱軋機(jī)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(lái)越厲害。特別是，軋輥末端磨損大于中間部分。當(dāng)下一個(gè)待軋鋼板很寬時(shí)，鋼板的橫截面會(huì)形成兩端厚的形狀（那些被形象地稱為貓耳朵）如簡(jiǎn)圖2所示，同時(shí)這個(gè)卷形會(huì)變形。Inaconventionalhotfinishingrollingmill,therefore,thewidthofaplatecannotbefreelychangedandrollingoperationisperformedaccordingtoapredeterminedoperationschedule(calledacoffinschedule)asshowninanexampleofFIG.3.AccordingtotheexampleofFIG.3,theaxisofabscissadenotesthenumberofrollingcoilsafterrollreplacementandtheaxisofordinateshowstherollingwidthofplates.Inordertoobtainanecessaryplatewidth,rollingoperationfornarrowplatesisrepeatedandtherollsarewarmed,andplatemembersarerolledinaccordancewiththeorderofthewiderplatemembers.Othervariousoperationschedulesareusedaccordingtohotfinishingrollinglines.在傳統(tǒng)的熱軋機(jī)，要求鋼板的寬度不可以隨意變動(dòng)，根據(jù)預(yù)定的運(yùn)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(biāo)表示通過(guò)軋制的軋輥數(shù)目，縱坐標(biāo)代表軋板的軋制寬度。為了獲取一個(gè)需要的軋板寬度，軋制系統(tǒng)將窄軋板重復(fù)軋制，軋輥在軋制前要預(yù)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(guò)程依據(jù)熱軋相關(guān)規(guī)則。Intheconventionalhotfinishingrollingmill,asmentionedabove,sincetherollingoperationisperformedaccordingtoapredeterminedoperationschedule,thereisaproblemthatschedule-freerollingoperationwhichisperformedirrespectiveoftheplatewidthcannotbeexecuted.上面提到的傳統(tǒng)的熱軋機(jī)，由于軋制操作是根據(jù)預(yù)定的操作流程來(lái)執(zhí)行的，那么將導(dǎo)致一個(gè)問(wèn)題，即不考慮鋼板寬度的自由規(guī)程軋制過(guò)程降無(wú)法執(zhí)行。Consequently,therehasbeenproposedthattheupperandlowerworkrollsareaxiallyshiftedrelativetoeachotherbyusingtheabove-mentionedroll-shifttyperollingmill,therebydispersinglocalwearofthesurfaceoftherollandachievingtheschedule-freerollingoperation.Inthiscase,however,sinceashiftingfunctionisusedtodispersethewearofthesurfaceoftheroll,thereisaproblemthataninherentcontrolofthecrosssectionshapecannotbeperformed.因此，由已經(jīng)提出的，上下工作輥根據(jù)上述的滾扎軋輥移動(dòng)式軋機(jī)的原理，通過(guò)彼此相對(duì)的軸向移動(dòng)，從而分散軋輥表面的磨軋，而實(shí)現(xiàn)自由規(guī)程軋制。然而在這種情況下，由于移動(dòng)的運(yùn)行使軋輥的表面離差產(chǎn)生，將導(dǎo)致一個(gè)不可避免的問(wèn)題，即截面形狀的控制無(wú)法保證。Thatis,hitherto,thefunctionofshiftingtheupperandlowerworkrollsoftheroll-shifttyperollingmillintheaxialdirectionisusedtocontrolthecrosssectionshapeofasteelplate.Theshiftingfunctionis,however,usedfordispersingthewearoftheroll,sothattheshapecannotbecontrolled.Thereisconsequentlyaproblemthattheweardispersionandthecrosssectionshapecontrolareincompatible.這是迄今為止，通過(guò)利用軋輥移動(dòng)式軋機(jī)的上下工作軋輥在軸向的移動(dòng)功能來(lái)控制鋼板的截面形狀。然而，這個(gè)移動(dòng)的功能是使軋輥相互錯(cuò)位，以致無(wú)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(wèn)題。SUMMARYOFTHEINVENTIONThepresentinventionisprovidedinordertosolvetheproblems.Thereforeitisanobjectofthepresentinventiontoprovideahottandemrollingmillwhichcanrealizebothofschedule-freerollingoperationbydispersingwearofthesurfaceoftherollandacontrolofacrosssectionshapeofasteelplate.該發(fā)明的概括現(xiàn)今的發(fā)明是為了解決問(wèn)題。因此本連軋機(jī)的發(fā)明，在實(shí)現(xiàn)分散軋輥表面的離差的同時(shí)，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(jī)，有兩個(gè)成對(duì)的軸向移動(dòng)式軋機(jī)和控制軋機(jī)的控制器。每個(gè)軸向移動(dòng)式軋機(jī)的上下工作輥都有預(yù)定的凸度曲線。也提供了使上下工作軋輥在軸向相對(duì)彼此的轉(zhuǎn)移機(jī)械裝置。該控制器控制每個(gè)軋機(jī)的移量為了獲得鋼板的預(yù)定橫截面形狀，它通過(guò)轉(zhuǎn)移位置作為中心改變軋機(jī)中的一對(duì)工作軋輥的上游移量用以分散軋輥的表面離差。同時(shí)移動(dòng)一對(duì)下游軋機(jī)在工作軋輥在預(yù)定方向相同的距離。從而撤銷由磨損離差在移位操作過(guò)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(guò)成對(duì)的軋機(jī)的工作軋輥的軸向移位，利用確定位置的轉(zhuǎn)變來(lái)獲得每個(gè)扎卷板預(yù)定的鋼板凸度，以及各個(gè)軋輥表面的離差可以被分離。此外，在軋機(jī)軋制系統(tǒng)預(yù)定方向（例如,相反的方向或同一方向）上的上、下游移動(dòng)的同樣距離，由于發(fā)生在軋機(jī)在上游的移位操作的分散磨損所導(dǎo)致的鋼板截面的變化可以在軋機(jī)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(dòng)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(dǎo)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