简介：Sincetheexcessivecapacityinsteelmakingandcontinuouscastingatpresent,andthelimiteddevelopmentmarginofCCtechnologyandequipmentinscale,thefurtherdevelopmentmustbemadeinaprofoundanddetailizedway.ThispaperenumeratestheitemsofCCtechnologyandequipment,whichneedtobedetailizedfromseveralaspectssuchasrollarrangementdesign,equipmentdesignandproductionoperation,anditpointsoutthatdetailizationisthefuturedirectionofCCtechnologyandequipment.Theitemsinrollarrangementdesignincludeeliminatingperiodicmeniscusfluctuationbyadjustingspacebetweenrollsreasonably;takingspecialmeasurestoavoiddangerousregionsofcastingspeed,inordertoreducethecenterporosityandcenterlinecrackofslab;optimizingthemajorradiusandthelengthofouterarcofcasterbeforestraighteningpointtoavoiddangerousregionofcastingspeed.Theitemsinequipmentdesignincludechoosingasuitablestructureofsupportandguidingrollaccordingtotheconcreteconditionsofcaster;accordingtobulgingshapeofslab,thinkingmoreaboutrestrictionofshelltobulgingforce,discussingtheforceonrollers,optimizingsplitrolltosupportslab;safetyfactorshouldbeconsideredtogetherwithcalculationmethodofthebearingnominalstaticload.Theitemsinaspectsofcontinuouscastingoperationincludethedelicacydivisionandthefunction-positioningofoperationmodesforCCmachineduetotheconsiderationofdynamicsoftreduction;monitoringandcontrollingsystemofCCmachinemustbefurtherdetailizedtoimprovethestabilityofproductionoperationandslabquality.Inadditiontothethreeaspectsmentionedabove,thisarticlepointsoutmanyotheritemsalso,suchashomogenizationofsecondarycoolingofslab,qualitycontrolofsurfaceandinternalofslab,andsoon.Thisarticleemphasizes,somekeytechnologiesneedtoberesearchedalso,andalltheseresearcheswillneverstop.

简介：Basedonthecontinuoushot(aluminizing)galvanizinglinesandrelatednon-standardequipmentofMeishanSteel,thispaperpresentsthemaincontentsofsuchintegratedengineeringanddesigningofequipmentforthetwohot-dippedgalvanizinglines,aswellasinnovativetechniquesandtheirfeatures.LedbyColdRollingProjectDepartmentofMeishanSteel,BaosteelEngineeringandTechnologyGroupCo.,Ltd.,workingastheresponsibleunitofthisproject,developskeytechnologiesandintegratesthesystembycombiningtheequipmentdesignanddevelopmentcapacityofBaosteelEngineering,researchanddevelopmentcapacityofResearchInstituteofBaosteel,processproductionandequipmentmaintenanceexperienceofColdRollingPlant,EquipmentDepartmentandManufactureDepartmentofBaosteelCorporation.Coretechnologiesofthetwolinesaredevelopedanddesignedthroughoriginalandintegratedinnovationandinnovationafterdigestion,focusingoneightcoretechniquesinprocessequipment,annealingfurnace,fluidinstallationandEICsystem.Asaresultofintegrationinkeyprocessequipment,industrialfurnaceandEICcontrol,thecoldrollinghotdipped(aluminizing)galvanizinglinestakeonanewlookandreachanannualcapacityof200000tgalvanizedproductsand250000tgalvanizedaluminiumbasestripsrespectively.Thesetwoworldadvancedlinesareabletoproducehot-dippedgalvanizingproductswithhighqualitysurfaceandfineshape,suchashouseholdapplianceboardandseniorconstructionboard.Asaresult,theprocessandequipmenttechnologyofthelineshaveformeddomesticintellectualproperty.Thus,thetechnologyhasreferencevalueforself-integrationandequipmenttechnologyinnovationofsimilarlines.

简介：ThisstudysystematicallyreviewsandsummarizesrelocationandrevampingprojectofmediumandheavyplaterollingmillinBayiSteel.AfterdetailedanalysiswasmadeonthemaindeficiencyandproblemsoftheoriginalproductionlineofPudongSteel,systematicalintegrationandimprovementfortheprocessandequipmentwerecarriedoutaccordingly.Throughinnovativepracticeofintegration,BaosteelEngineeringhasgreatlyimprovedthetechnicalprocessandequipmentmake-up,aswellasthegradesandqualityoftheproducts.Theoriginalman-operatinglineisredesignedintoanautomaticsystemcontrolledbyLevel2computer,reachingtheadvancedtechnicallevelofhome-mademediumandheavyplateproductionlineinrecentyears.Theprojectisconstructedintwophases;TheoriginalproductmixofPudongSteelismaintainedasmuchaspossibleinPhaseI.After3500mmsinglestandfinishingmillisputintooperation,capacityofhot-rollingmediumandheavyplatereaches650000t/a,withthemaximumthicknessat40mm.Equipmentorfacilitiesarereservedforproductionofpipelinesteelandothergrades.Pipelinesteel,vesselplate,windpowerplateandotherTMCPandheattreatmentproductsareprojectedinPhaseⅡ.After4200mmroughingmillanditsmatchedfacilitiesareputintooperation,capacityofhot-rollingmediumandheavyplatewillreach120000t/a,withthemaximumthicknessat80mm.Throughtheoptimizationofprocessequipmentanditsfunction,therelocatedmediumandheavyplatemillproductionlinehasreachedadvancedlevelamongsimilardomesticmills.Theprominentachievementsoftheprojectaretherevampingofthicknesscontrolsystemofthefinishingmillandthenewlyinstalledshapecontrolsystem.Automationcontrolofthewholelineisrealized.