简介：ThechallengingconditionstoChina’ssteelindustrycurrentlyare:insufficiencyofnaturalresources,namelyironoreandcokingcoal,overcapacityofexistingfacilities,overconsumptionofenergyandheavyimpactonglobalenvironment.ThehealthydevelopmentofChina’ssteelindustrydependsonhowwecoulddealwiththesechallenges.

简介：Thedirectrollingprocessforhotstripproduction,wherethethinslabcasterisconnecteddirectlytothemill,hasgainedmarketsharerapidlybecauseofitsremarkableadvantagesintermsofenergysavingsandinvestmentcostovertheconventionalhotstripmills.However,theunquestionableadvantagesofthefirst-generationapplicationsofthisplantconceptalsoentailsignificantlimitationsbothinproductivityandsteelgradesthatcanbeproduced.Sincehisfirstpioneeringapplications,Danieliconsideredstrategicthedevelopmentofnewtechnicalsolutionsspecificallyconceivedtoovercometheselimitationswiththegoalofincreasingplantproductionvolumesandenlargingsteelgradeproductmix,inordertocoverthegapbetween'Conventionalmill'and'Thinslabcastingandrolling'processroutes.Inordertoreachthisgoal,DanielihasdevelopedacompleteportfolioofplantlayoutsadoptingThinSlabCastingandRollingtechnologies,eachofthemconceivedtoguaranteetheoptimalCAPEXandOPEXparametersinfittingwithmarketrequirementsourCustomerintendtotarget.intermsofproductivity,steelgradesandcoildimensionproductmix.DanieliTSR(ThinSlabRolling)fTSR(flexibleThinsSlabRolling)QSP(QualityStripProduction)andETR(ExtraThinRolling)plantconfigurationsareanalyzedinthispaper.Withthisdiversifiedapproach,Danielisolutionsaremostappropriateanswerstothinslabcastingandrollingtoproducehotrolledcoilswithsuperiorqualityandanextremelydiversifiedrangeofsteelgrades.Already,thisapproachhasallowedDanieliplantsto:①exceedthethresholdproductionof3.0Mt/awith2castingstrandsinoperationasdoneinTangshanIronandSteelplantinP.R.Chinasince2005;②expandtheproductmixtoincludevirtuallyallthesteelgradesusedforflatproductapplications,includingthemostdemandingones,suchasperitectic(inEssarAlgomaCanadaandBenxiIronandSteel,China),micro-alloyed,andsiliconsteels,forthemostsophisticatedapplications,