外文翻译热轧板带钢精品.docx

外文翻译热轧板带钢精品.docx

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外文翻译热轧板带钢精品

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英文原文

Hot-rolledplatesteel

1.1hot-rolledplatesteelproduction

Hot-rolledstripsteelisanimportantspecies,theentiresteelindustry'stechnologicalprogressandeconomicefficiencyhasanimportantimpact.Developedhot-rolledstripsteelhot-rolledsteelproductionaccountedforabout50percent,andintheinternationalmarketcompetitionintheleadingposition.China'sironandsteelindustrialoutputgrowingfasterinrecentyears,butthenumberofhighvalue-addedproductsandlowerquality.China'sgeneralhot-rolledstripsteelproductsistheminimumthicknessof1.8mm,butinfactonlyveryfewproductionislessthanthethicknessof2.0mmHotStrip,evenifthenarrowstrip,thethicknessofproductsgenerallylargerthan2.5mm.Therefore,aconsiderablepartwanttouselessthan2mmthickstripofrawmaterialsfortheuser,onlytheuseofcold-rolledstripsteel.Ifthedevelopmentofthethinhot-rolledstripsteelspecifications,canreplaceaconsiderableportionoftheuseofcold-rolledstripsteel,theproductioncostsgreatlyreduced.

1.1.1hot-rolledsteelproductionbroadband

Broadbandforeignhot-rolledsteelproductionoftechnologicalprogressinthefollowingareas:

①tropicalsteelwithoutaheadrollingtechnology[2].Withoutaheadrollingtechnologycanproducestabilityandthin-thinhot-rolledstripsteel,byitsgenerousthanthetraditionalhotrollinga000:

1to800:

1,andtousecompulsorycoolingandlubricationofrollingproductiontechnologyWithnewmaterialpropertiesofhigh-techproducts.②CSPtechnology.ItismainlyacompacttropicalsteelproductionprocessCSP（CompactStripProcess）,onlinetropicalsteelproductionprocessISP（In-LineStripProduction）,flexiblethinslab-rollingtechnologyFTSR（FlexibleThinSlabRolling）continuouscastingandrollingdirectlyCONROLLtechnology,suchasmorethan10types.GermanyhasdevelopedtheSMSCSPprocesshasbeensuccessfulinrollingoutthethicknessof0.8mmthinstripproducts,andhasbeenwidelyusedinhouseholdappliances,constructionindustryandotherareasoftheAustrian（VAI）CONROLLdevelopmentoftheproductionprocessalsosuccessfullyAthicknessof0.9mm~1.0mm,excellentsurfacequalityhot-rolledthinstrip,theexposedpartscanbeusedasthevehicle;UnitedStateshassofarputintooperationthethinslabcontinuouscastingandrollingproductionlineofmorethan100oftheproductioncapacityof5×107t/year[3].③ferriteDistrictrollingproductionprocess.Italsoknownasphasechangecontrolrolling,isfromBelgiumMetallurgicalResearchCenterin1994,arollingdevelopmentofnewtechnologies,themainpurposeistousetheoriginalspecificationsofhot-rolledthinstripreplacethethicknessof1.0mm~2.0mmcold-rolledscopeoftheProducts.FerriteDistrictrollingproductiontechnologydevelopmentgoalistoproducethin（thin）specificationsofqualitydeepdrawingboard.LTV'sIndianaplant40percentoftheHubbleUltra-lowcarbonsteelproductsusedferriterollingproductionarea,Arvediusingferriteareaofrollingproductionofitsultra-thinhot-rolledstripsteelproductionaccountsfor25%.④thinstripcastingtheCASTRIPprocess.ThisprocessbytheUnitedStatesNiukeIronandSteelCompany,theAustraliancompanyBHPandtheJapanesecompanyIHIjointdevelopmentandsuccessofthecompanyin2003forNiukebuildingtheworld'sfirstsetoffullcommercializationofthetwin-rollcastingthinstripproductionline,usedintheproductionofcarbonSteelandstainlesssteel.Andconventionalcontinuouscastingandrollingmilltechnology,comparedwithtechnologyinvestment,loweroperatingcosts,energyconservationandenvironmentalprotection,theadvantagesoflowemission[4].Atpresent,thiswholebusinessofthethinstriptwin-rollcastingmachinewithanannualoutputof2.0mmthefollowingspecificationsthinstrip500,000t.Thecastingmachineusedinladlecapacityof110t,twin-rollcastingofadiameterofΦ500mm,thehighestcontinuouscastingspeedof150m/min,commonlyusedforthecontinuouscastingspeedof80m/min,exportsstripthicknessof0.7mm~2.0mm,thewidthof1000mm~2000mm.

Broadbanddomestichot-rolledsteelproductionprofileisasfollows:

①traditionalhotstripmill.Baosteelto2050mmHotStripMillasanexample,BaoshanIronandSteel2050mmhot-rolledplantintheAugust3,1989operation,hot-rolledunitdesignedannualoutputof4milliont.Bytheendof2000totalproductionof44.46milliontHotStrip.1999annualproductionreached5.1milliont,morethan25percentofproductiondesign,in2000to5.2milliont.ThemainproductsarePutanGang,high-qualitycarbonsteel,low-alloysteel,deepdrawingsteel,shipbuildingsteel,steel,suchasspiralweldedpipeandsteelcoil.2050mmhot-rolledunitis3/4continuousrollingmill.Allthemajorplantequipment:

fourroughmill,sevenfinishingmill,threefullhydrauliccoiler,andfivefinishinglineoperations.Equipmentweighing60915t.EquipmentfromGermanySMSJamaalconsortiumofcontractors,12,equipmentoperationandstability.Substantialincreaseinoutputatthesametime,thecompositeindicatorofproductionunitsandproductsarealsocontinuouslyimproveaccuracy,high-intensity,highlylimittheincreaseinproductspecifications,productspecificationsthinincreasetheproportionhasdoubled.Especiallythelast,2.00mmthinthefollowingspecificationsoftheproductsyieldof17percent,thaninMay1992amountedtoyield4.98percentandthedesignrequirementsofthe6percenthigherthreetimes[5].Thinspecificationsoftheproductsasamajorproductiontargets,theuseofbestcoilingtemperature,theheatingtemperature,rollingloaddistribution,rollingtooptimizethespeed,finishingontheracktargetcrownforreasonabledistributionofrollingoutthestandardthickness1.6mmcontainerwithatmosphericcorrosion-resistantplates,toresolvethelong-termdependenceonimportedsteelcontainerthesituation,tryrollingin2002and1.2mmthicksuccessofthehot-rolledthinstrip.②CSP.Since1992,LanzhouSteelandIronandSteelResearchInstitutetoestablishChina'sfirstsetofCSPthinslabcaster,themajordomesticsteelcompanieshavespenthugeamountsofmoneyorofthenewhotrollingplanttoexpandthescopeofvariety,improveproductQuality.Baosteel2050and1580isthehotlineofequipmentandautomatedcontrolofthehighleveloftwoproductionlines,canproducestability≥1.5mmthicknessofthehotrolledcoil,canalsoproduceasmallamountofthicknessof1.0mm~1.2mmultra-thinHotStrip.1999-CSPSteelintroducedthefirstoftheCSPline（1450mm）,havebeencompletedandputintoproductionaftertheHandanIronandSteel1450mm,BaotouSteel1700mm,PanzhihuaIronandSteel,TangshanIronandSteel1800mmFTSRUnitMagang1800mmCSPunit,Valin1800mmCSPaprojectAndasteelplantonthe1780hotrollingunit,BenxiIronandSteel1880mmCSPhotcontinuouscastingandrollingproductionlinedesignedproductioncapacity2.8milliontons,hotrollingunitLaiwuSteel1450designcapacity2milliontons,Shagang1700mmHotStripMillproductionlineDesignproductioncapacity4.5milliontons.Angang2150mmCSPunitdesignedproductioncapacity4.5milliontons.Accordingtostatistics,Chinain2007areexpectedtobe12hot-rolledproductionlineproduction,designoverallcapacityto37milliontons,ofwhichthedesigncapacityof300millionmetrictonsofhot-rolledlarge-scaleproductionlineshavefive,were380unitsofsteel178010,000tons,Magang2250Unit5milliontons,BaoshanIronandSteel1880unit3.7milliontons,iron-day1780units3.8milliontons,Taiwan's1780NorthUnit4milliontons;remainingsevenhot-linedesigncapacityaremorethan2million,TheyareRizhaoSteel1580Unit2milliontons,the1480TangshanStatesHSBCunit2milliontons,arollingplantQian'an1250Unit2milliontons,Wuhan1580Units2.8milliontons,ShanxiHaixin1,500units2.2milliontons,builtinNingboUnit1780-2.5milliontons.Itisestimatedthatbytheendof2007China'soverallcapacitywillreachHot140milliontons.③ferriteDistrictrollingproductionprocess.ZISCSPCSPproductionlineoperation,planstousetheproductionprocessfollowingultra-thin2.0mmHotStrip,thecurrentdomesticTangshanIronandSteelCo.,BenxiSteelandmanyoftheCSPthinslabproductionlineshavebeenrolledferriteDistrictSystemcapacity.

1.1.2hotrollednarrowstripsteelproduction

Atpresent,foreigndevelopmentofanarrowstripofstagnation,outputandqualityarenothigh,thenarrowstripofdemandwillbeusingbroadbandSlitterapproach,highcost.Atotalofmorethan50setsofdomestichot-rollednarrowstripsteelmill,continuous-mill-2,3/4setsofrollingmill14,15setsofsemi-rolling,therestistracking,bar-and-suchasplanets,thetotalproductioncapacityof9×106t.However,thelevelofproductiontechnologyandequipmentgenerallyless,ofwhich15state-ownedenterprisesstilluseold-fashionedlayoutofmostofthe3/4androllingproductionline.Thewidthoftheproductscanbedividedintotwocategoriesforthe145mm~240mm,useofafirebillettobecomeuseful,suchasventstripsteelmills;anotherforthe210mm~305mm,theuseoftwofireblanksrollingearlytobecomeuseful,SuchasBaotouSteel,LaiwuSteel,andotherband.LaterTangDynastyoptimizationofnarrowstripsteelproductionlinebyproductionfor165mm×165mm,165mm×225mm,165mm×280mmthreespecificationsofthebillet,toproducethemostKuanda355mm,thethinnest1.8mmforthenarrow-bandproducts.1996inWuxiCity,athinstripLimitedcompletedthefirsti