简介：Sincethe21stcentury,greatattentionhasbeenpaidtoultrafastcooling（UFC）technologyinthewholeworld.Theindustriesandtheresearchinstitutionsbegantocarryoutinvestigationsonbasictheoriesandindustrialapplications.Since2003,theRALofNortheasternUniversityhasmadesomeprogressesonmicrostructurecontroltheories,understandingofstrengtheningmechanismsandtheirindustrialapplications.Inthispaper,theseachievementssincethelastBaosteelBACin2008willbereportedontheindustrializationofUFC,strengtheningmechanism,developmentofnewsteelgrades,andsoon.

简介：Vapordepositedcoatingsontostripsteelareapromisingalternativeasfunctionallayersforcorrosionprotectionorhighabrasionresistance.Conventionalcoatingsystemshavesomelimitsregardingenvironmentalcompatibility,therangeofcoatingmaterialsandapplicationproperties.Physicalvapordeposition(PVD)isanenvironment-friendlytechnologyandenablesnearlyunlimitedmaterialandprocessvariety.Electronbeamhigh-rateevaporationwithdepositionratesuptosomemicrometerspersecondisthemostproductivePVDtechnologyforlowcostcoating.Thecombinationofevaporationwithpowerfulplasmaisanefficientwaytoimprovethelayerproperties.Thedevelopedplasmasourcescanbeusedforspecialplasmaenhancedchemicalvapordeposition(PECVD)processestoo.Thepapergivesanoverviewaboutthelatestdevelopmentsinthesetechnologies.Furthermore,thepaperexplainssomeexamplesofnewlayerstacksontosteelstrips.Whileenhancedcorrosionprotectioncanbeobtainedbymagnesium,aluminiumorcoppercontainingcoatingsotherfunctionalsurfacepropertiescomemoreandmoreinthefocusofinterest.Forinstance,decorativegoldcoloredlayers,transparentscratchresistantlayers,hardcoatingsandphotocatalyticlayersweredepositedonrunningsteelstrips.Functionallayersandlayersystemsforenergysavingandsunenergyabsorptionbysolarthermaleffectsandphotovoltaicsareunderdevelopment.Thecoatingsarepreparedundertheconditionsofveryhighdepositionratesusingourin-linevacuumcoaterformetallicstripsandsheetswiththenameMAXI.Theinfluenceoftheprocessandplasmaparametersonthelayerpropertieswereinvestigatedandwillbedemonstratedforsomeapplications.

简介：Foritspoorfilmformingandwater-resistanceproperties,waterbomeepoxysystemisnotappliedfortheprotectionofsteel.Themainreasonfortheseproblemsisthattheemulsifieroftheemulsifyingefficiencyisnothighwhilecannotbeseparatedouteasily.Now,intermsoftheuseofnewlysynthesizedemulsifierstoimprovethesetwoshortcomings,anewsystemwasdeveloped.Comparedwithsolvent-basedcoatings,thisnewwaterbomeepoxysystem’scorrosionresistancewasfoundclosetothesolvent-basedones.Finally,theapplcationofthisnewwaterbomeepoxysystemfortheprotectionofsteelisdiscussedbriefly.

简介：Inrecentyears,despitetheglobaleconomicrecessionandsteeloversupply,thedemandforhighstrengthsteel(HSS)andadvancedhighstrengthsteel(AHSS)sheetshasrobustlyincreased.Tosupplythematerialsneededforautomotivemanufacturing,variousAHSSproductsandapplicationtechnologieshavebeendevelopedbyBaosteel,includingthelst,2nd,and3rdGen.AHSS,whichmakesBaosteeltheworld'sfirststeelmakertocommerciallyprovideallthreegenerationsofAHSS.Recently,thenewGen.(the2ndand3rdGen.combined)AHSSproducts,whichfeatureultra-highstrengthandenhancedductility,havedrawngreatattentionfrombothsteelmakersandtheautomotiveindustryastheseproductscanbeusedtoproduceautopartswithcomplicatedshapesbycoldformingandhavegreatpotentialformanufacturingcarbodiesthatarelighterinweightandhavehighercrashresistance.Inthisarticle,theconcepts,properties,andapplicationsofBaosteel'snewGen.AHSSproducts,includingquenchingandpartitioning(QP)steels,twinning-induced-plasticity(TWIP)steels,andMedium-Mn(Mn-TRIP)steels,aredescribedandreviewed.Moreover,theprogressoftheBaosteellight-weightsteelcarbody(BCB)wasreported.

简介：Inthispaper,therecentstateandproblemsofthesinkrollinCGLaredescribed.Severalmethodsofincreasingitsoperationallifespanareintroduced,suchassurfacecoatingtechnologyandsleevematerialtechnology.Fundamentallytheycannotsolvetheproblemsofsurfacequalitycausedbythecontactbetweenstripandroll.Onthisbasis,thenewlydevelopedprincipleandsolutionsforhotdipgalvanizingtechnologywithoutsinkrollarehighlyemphasized,theyareFloatTechnology,Electromagneticpumptechnology,Electromagneticenclosedslotbyhigh-frequencyAC,Electromagneticenclosedslotbyhigh-frequencyDC.Acomparisonamongtheirfunctionsandcharacteristicsismadeandthepossibilityofitsapplicationisalsodiscussed.Finallyitcomestoaconclusionthatelectromagneticenclosedslotrepresentsthedirectionofacontinuoushot-dipgalvanizingsteelstripinthethe21stcentury.Ithasaverybroadapplicationprospects.BaosteelTechnologyCenterisfocusedontheresearchanddevelopmentofthistechnology.Astechnologyadvances,industrialapplicationsispossible.

简介：Thecoolingandlubricationprocessisoneofthekeyprocessesincoldrolling,asitnotonlydeterminessurfacequalityandstripshape,butalsoreducestherollingpowerconsumptionandextendsthelifeoftherollevenduringhigh-speedoperation.Inthisstudy,aninnovativemethodcombiningemulsionlubricationandneatoillubricationwasusedtosolvesomeproblemsassociatedwithindividualpasses.Laboratorytestsonstainlesssteelstripsshowedthatthisnewlubricationmethodcouldimprovethesurfacequalityofthestrip,controltherollingfrictioninthedeformationzone,andhasthepotentialofmakinglubricationsystemssimplerandeasiertooperate,allwhilereducingthenegativeenvironmentalimpactfromemulsionprocessing.

简介：Thisstudysummarizessomeseriousdisharmoniousproblemsthatubiquitouslyexistinthecastingresiduerecyclingofsteelplants,suchaslargelandoccupation,lowoperationalefficiency,hiddenhazards,hugeresourceandenergyconsumption,seriousenvironmentalpollutionandsoon.Itanalyzesthenecessityoftheon-lineinnovationandrecyclingbasedonthepresentsituationofBaosteel.ItstatestheinnovationofthenewgridtechnologyandtheachievementsofitsintegratedapplicationatBaosteel.ItalsosummarizesandelaboratessomegreentechnologyfeaturesofthetreatmentandtheutilizationoftheBaosteelcastingresidueandthenewgridtechnology,suchassafety,energy-savingandenvironmentalprotection.Inaddition,itlaysouttheprospectsforthedevelopmentandapplicationofthetechnology.

简介：TheCOREXprocessisauniqueindustrializedsmeltingreductiontechnologyforiron-makingpresentlyintheworld.Oneofitsstrikingcharacteristicsisitsabilitytodirectlyutilizelumpcoalasitsmainfuel.Therefore,theCOREXprocessuseslittle,ornocokeatall.TherequirementsonlumpcoalfortheCOREXprocessweregiveninthispaper.Inordertoreducethecokeconsumptionandgiveplaytotheadvantagesofdirectlyusinglumpcoal,theappropriateratioofcoketolumpcoalneedstobedetermined.Thispaperalsosummerizedseveraladvancedmethodsofusingpowderedcoalgeneratedbythetransporting,loadingandunloadingoflumpcoal.InordertosolvethelackofcoaltypesforCOREXandobservethecrackinganddevolatilizationactionoflumpcoalinthemelter-gasifier,anexperimentaldeviceandanewmethodwereproposedtotestthecrackinganddevolatilizationcharacteristicsoflumpcoal.Bymeansofthenewmethod,thedevolatilizationandcrackingbehaviorsoflumpcoalcanbeinvestigated,whichishelpfultotheselectionoflumpcoalfortheCOREXprocess.