简介：BaosteelTechnicalResearch,aquarterlyjournal,whichisissueddomesticallyandabroad,isrunandsponsoredbyBaosteelGroupCorporation.BaosteelTechnicalResearchmainlyreportstheachievementsintechnologicalinnovation,academicresearch,newproductdevelopmentandindustrialequipmentimprovementbyBaosteel.Itwillcontinuetofollowuponhottopicsandservethecompany'stechnologicaldevelopmentand

简介：Owingtothedevelopmentofnewproductsandhigherrequirementofproductproperties,thecurrentexistinginductionheatingtechnologyofBaosteelcannolongersatisfythenewrequirementsoftheproductline.Controloftheinductionheatingtemperaturetoanappropriatevalueisakeyconsiderationininductionheatingtechnology.Toobtainacculturatedtemperatures,investigationswerefocusedontheparametersofaninductionheatingsystem,includingthoseofinductionheatingequipmentandheatingprocesses.Intheseinvestigations,computersimulationwasusedtomodeltheinductionheatingprocess,followedbyphysicalexperimentationtoverifyandimprovethesimulationmodel;finally,optimizedinductionheatingparametersweresuggested.Theuseofcomputersimulationsdramaticallydecreasedphysicalexperimentaltimes,andthecomputedheatingparameterswereusedtoguidethephysicalexperimentationanddesignoftheproductline;thisincreasedtheefficiencyofsubsequentinvestigations.ThisstudyfocusesonthedevelopmentofinductionheatingtechnologyinBaosteel,whichincludestheoverallinductionheatingtechnologyusedinmanufacturingbackuprollersandinthethermomechanicalcontrolprocess.

简介：BaosteelTechnicalResearch,aquarterlyjournal,whichisissueddomesticallyandabroad,isrunandsponsoredbyBaosteelGroupCorporation.BaosteelTechnicalResearchmainlyreportstheachievementsintechnologicalinnovation,academicresearch,newproductdevelopmentandindustrialequipmentimprovementbyBaosteel.

简介：BaosteelTechnicalResearch,aquarterlyjournal,whichisissueddomesticallyandabroad,isrunandsponsoredbyBaosteelGroupCorporation.BaosteelTechnicalResearchmainlyreportstheachievementsintechnologicalinnovation,academicresearch,newproductdevelopmentandindustrialequipmentimprovementbyBaosteel.Itwillcontinuetofollowup

简介：BaosteelTechnicalResearch,aquarterlyjournal,whichisissueddomesticallyandabroad,isrunandsponsoredbyBaosteelGroupCorporation.BaosteelTechnicalResearchmainlyreportstheachievementsintechnologicalinnovation,academicresearch,newproductdevelopmentandindustrialequipmentimprovementbyBaosteel.Itwillcontinuetofollowuponhottopicsandservethecompany'stechnologicaldevelopmentandprogress.Itsreadersincludeexpertsinsteelmetallurgyandrelatedfields,technicians,managementstaff,professorsandstudentsinuniversitiesandcolleges.It

简介：BaosteelTechnicalResearch,aquarterlyjournal,whichisissueddomesticallyandabroad,isrunandsponsoredbyBaosteelGroupCorporation.BaosteelTechnicalResearchmainlyreportstheachievementsintechnologicalinnovation,academicresearch,newproductdevelopmentandindustrialequipmentimprovementbyBaosteel.

简介：Drillpipeproductsarethemostcriticalservicerequirement,thehighestperformancerequirementandthehighestqualityreliabilityOCTGproducts.Throughthecontinuousresearchonsteelmaking,upset,hearttreatment,straighteningandfrictionwelding,Baosteelimprovesthekeytechnicalparameterswhichaffectthequalityofdrillpipe,suchasmaterialpurity,Miuofinternalupsettransitionarea,toughnessandstraightness.Baosteeldrillpipeproductshavemetthedemandingrequirementofdrillingoperations.ByBRPdephosphorizationandLFdesulfurization,theP,ScontentofBaosteeldrillpipeisverylow.TheScontentofS-135drillpipecanbecontrolledinlessthan10ppm.Baosteeldesignsanewclosed-loopcontrolsystemofupsetendinductionheatingsystem.Thesystemusetemperaturemeasurementinsidetheovenandclosed-loopcontrol.Thetemperatureaccuracyofthesystemcanbeguaranteedwithinthe±15℃togetastableupsetquality.TheupsettingprocessofthedrillpipeisoptimizedbyusingpatentedtechnologyandmadetheMiufrom100mmto140mm.Thismakeasubstantialincreaseinfatiguelifeofthedrillpipe.Toimprovetheimpacttoughnessofthedrillpipebody,thedrillpipebodymaterialischangedfromCr-Ni-MosystemtoCr-Mo-Vsystemandtheheattreatmentischangedfromoilquenchingtowaterquenching.Toimprovetheimpacttoughnessofthetooljoint,thetooljointfurnaceisupgradedtoimproveheatingcapacity.Toimprovetheimpacttoughnessoftheweldzone,anewfuzzycontrolsystemofweldzoneheattreatmentisdeveloped.Thetemperatureaccuracyofthesystemcanbeguaranteedwithinthe±5℃togetastableheattreatmentquality.Anewdrillpipestraightnessautomaticdetectiondevicesandself-learningmethodofstraighteningaredevelopedtoachieveautomatedstraightening.Aweldingprocesswithhighspeed,single-stagepressureandhighforgingforceisappliedtoinertiafrictionwelding.Aweldingprocesswithlowspeed,three-stagepressureandlowforgingforceisappli

简介：Baosteel'ssteelmakinghasdevelopedgreatlyoverthelast30yearsintheareasofhotmetalpretreatment,converter,electricarcfurnace(EAF),secondaryrefining,continuouscasting,stainlesssteelandthecomprehensiveutilizationofresources.Thedevelopmentoftechnologies,suchascleansteelproduction,ruhrstahlheraeus(RH)vacuumrefining,abreakoutpredictionsystemforslabcontinuouscastingandrotarycylinderslagtreatmenthascreatedagoodenvironmentforthedevelopmentofvalue-addedproductsandthecomprehensiveutilizationofresourcesatBaosteel.ThispaperdescribesthedirectionofdevelopmentofBaosteel'ssteelmakinginthefuture.

简介：OxidemetallurgytechnologyhasbeendevelopedatBaosteelforimprovingtheheataffectedzonetoughnessofsteelplatesforhighheatinputwelding.AfterdeoxidationwithstrongdeoxidizersofMgalloy,thecomplexinclusionscontainingpartsofcompoundsofMgO,Ti2O3,MnO,Al2O3,MnS,CaSandTiNareformed.Thesekindsofinclusionsarebeneficialforpromotingtheformationofintragranularferrite.Aftertwo-electrodevibratoryelectrogasarcweldingwiththeV-typegrooveandahighheatinputof395kJ/cminasinglepass,theformeraustenitegrainisveryfineinsize,withanaveragegrainsizeofonly85μm.Excellentheataffectedzonetoughnessisobtainedforthedevelopedsteelplateswithathicknessupto68mm.

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简介：BaosteelTechnicalResearch,aquarterlyjournal,whichisissueddomesticallyandabroad,isrunandsponsoredbyBaosteelGroupCorporation.BaosteelTechnicalResearchmainlyreportstheachievementsintechnologicalinnovation,academicresearch,newproductdevelopmentandindustrialequipmentimprovementbyBaosteel.Itwillcontinuetofollowuponhottopicsandservethecompany’stechnologicaldevelopmentandprogress.Itsreadersincludeexpertsin

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简介：Baosteel’shigh-frequencyelectricresistancewelded(HFW)610longitudinalseammill(85/8″-24″,theyearlyoutput300000t)andUOE1422longitudinalsubmergedarcwelding(SAW)mill(20'-56',theyearlyoutput500000t)areestablishedin2005and2008,respectively.ProductspecificationcoverswholeofAPI5CTstandardandmostofAPI5Lstandard,terminatingthehistoryofmanufacturingthemediumandlargesizepipesatBaosteel.Theyearlyoutputincreasedfrom1,200000ttonearly2000000t.HFW610millisorientedatmidsizepipes,whicharemainlylinepipeandweldedcasing.ThedesignedyearlyoutputofHFWmillis300000t,includingcasingof90000t,linepipeof180000t,roundstructuralpipeof15000tandrectanglestructuralpipeof15000t.Theyearlyoutputofoilcasinglinesupportingtheweldinglineis120000t,amongwhichincludingweldedcasingandseamlesscasingof30000t.Baosteel’sHFW610longitudinalseammillwasestablishedonOctober27,2005.AftertheequipmenttrialrunInOctober,2005-March,2006andequipmentfunctionexaminationInApril,2006-June,2006,massproductionstartedinJuly2006.AndinDecember2006,monthlydesignedcapacitywasachieved,reachingto30496.644tinweldingpipeand28349.939tinfinishedpipe.Theoutputof2006,2007,2008and2009was117067t,223554t,255791t,and204424t,withthecomprehensiveyieldratio79.4%,87.8%,90.80%and91.92%respectively.ThisstudyintroducesBaosteelHFW610Millwhichistheworldclass,energyconservationandenvironmentalprotectionenterprise,includingproductorientation,processandnewproductdevelopment.

简介：Ferriticstainlesssteel(FSS)forvariousapplicationswasdevelopedonthebasisofThermo-calcsimulation.Alloydesign,precipitateanalysisandprocessingparametersoptimizationwerecarriedoutonthebasisofthesimulationresultsaccordingtothetechnicalrequirementsoftheapplications.Thesedevelopedproductshaveoutstandingproperties,suchasmechanicalstrength,ductility,formability,weldabilityandcorrosionresistance.BaosteelhasformedaseriesofFSSproductswhichwillincreasetheprofitofthecompanyandenhancetheproductvarietyofstainlesssteel.

简介：Baosteelstartedtheproductionofpipelinesteelintheearly1990s.Thecompanyhassofarproducedmorethan4MtofAPIX42-X80andhydrogensulfideresistantX52-X65steel.In2006,itsucceededinproducingX100andX120pipelinesteels,whichhavebeenusedinmanyimportantprojects,suchastheoiltransportingprojectintheTarimBasin,thepipelineprojectinSudan,theWesttoEastgaspipelineproject,theSino-Russianoiltransportingproject,etc.Baosteelhasmadegreatprogressinthepuritycontrolofpipelinesteel,thehomogeneitycontrolofslabcompositionandsurfacequalityoverthelasttenyears.Thecompanyhasachievedthisbyimprovingitssteelmakingequipmentandoperationmanagementtechnology,andbyintegratingitsprocesstechnology.Thephosphorusandsulfurlevelsofthepipelinesteelhavebeendecreasedto50ppmand12ppmrespectively(1ppm=10-6).

简介：Throughout30yearsofimportation,adoptionandinnovation,theColdRollingPlantofBaosteelhasadheredtoamarket-orientedstrategy,andgraduallyexpandeditsoutputandraiseditstechnicallevelthroughtheexpansionofproductionscale,theoptimizationofproductionlines,thedevelopmentofhighaddedvalueproducts,theimprovementofproductquality,environmentallyfriendlymanufacturingandtechnologicalinnovation.Inthisway,theplanthasdevelopedintoaworldclasscoldrollingplantthatproducescutting-edgeeconomicandtechnicalindices.

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简介：Optimizationofscraputilization,throughmaintainingareasonableheavyscrapratio,determinationofscrapyield,developmentofsubstitutesforscrap,recyclingofhigh-alloyscrapandoptimizationofscraputilizationtechnology,wasinvestigatedinthispaper,intermsofthesupplyofmetalmaterials,productioncost,productionqualityandenvironmentprotection.Then,recyclingofsolidwasteresourceswasdiscussed,andtheutilizationconditionsandmethodsofslag-steel,slag-iron,steel-slag,etc.weredetermined.Finally,themanagementsystemforcomprehensiveresourceutilizationwasintroduced.

简介：Baosteel's60000m3/hairseparationunit(ASU)isthelargestoxygengeneratingsysteminChina.Theoperationalcostofsuchagiantsystemisveryhigh.Howtoreducetheoperationalcostisacriticalissue.Thispaperdiscussesthesystem'scharacteristics,thecurrentoperationalstatusandthedifficultiesinreducingthecost,andanalyzesrelevantindicators,suchasthetechnicalandeconomicalindicatorsofindividualunitsandsystemsaswellastheindicatorsconcerningthecosts.Therelationshipbetweenthecostandeacheconomicalindicatorandmeasurestooptimizeaneconomicaloperationoftheoxygengeneratingsystemarealsodiscussedinthispaper.

简介：Toconstructworld-classironandsteelenterprises,Baosteelhasadoptedastrategyofenvironmentalmanagementthatemphasizesenvironmentalprotectioninthelow-carbonandecologicalmanufacturingofsteelproducts.Inrecentyears,Baosteelhasdevelopedaseriesofadvancedgreenrefractorytechnologies(includingcompositerefractoryprecastblockswithauniqueceramicglaze,andhigh-thermal-conductivity/high-densitysilicabrick)foruseinBaosteelcokeovens.Theresultsoftheseapplicationsnotonlyreduceproductioncostsandincreaseproductionefficiency,butalsofacilitatecleanproductionbycokeovens.Baosteel'scokeovenhasbecomeChina'sleadingexampleoftheapplicationofgreenrefractories.