简介:DuetofastdevelopmentofChinesesteelindustry,continuousadjustmentofproduct,improvementofquality,researchofvalue-addedproduct,RHtechnologyissignificantlydeveloped.MoreandmoresteelplantsarecoveredwithRHfacilities.RHratioisgrowingrapidlyaswell.Overpastdecade,throughassimilatingadvancedforeigntechnologiesandfurtherrefiningthem,ChineselargescalesteelplantsmasterthetechnologyofRHproduction,operation,maintenanceandmakeitmorewidespread.RHfunctionsarewellappliedandimproved.RHismorewidelyeffectivelyputintouse.Throughindependentinnovation,RHcoredevicesandtechnology,suchasRHvacuumpump,oxygentoplance,vacuumvesselpreheatinglance,ladleliftingdeviceetc.haverealizedlocalization.Thedevelopmentofequipmentdesign,softwaredesign,equipmentmanufacturingtechnology,equipmentmounting,testtechnologyandEPCmanagementmakesequipmentconfigurationmoreflexible,equipmentmorefunctionalandstable,easiertooperateandmaintain.Italsoguaranteeshighlyeffectiveandlowenergyconsumptionproductionandqualityofsteel,reachesinternationaladvancedlevel,lowersthecostofRHconstructionandoperation,makesafter-sakeservicemoreconvenient.HowtocontinuouslyoptimizeanddevelopRHprocess,equipmentandcontroltechnology,inordertomeettheneedsofproductwithmorereasonableandeconomicprocess,exploitpotentialities,buildmoreeffective,lowercost,lowerenergyconsumption,protectingenvironmentRHfacilitieswillbethekeypointoffutureRHtechnologydevelopmentinChina.
简介:Themajorapplicationsofelectricalsteel(ES)sheetsaremotors,transformers,etc.Inrecentyears,theraiseofcrudeoilpriceandincreasingenvironmentalconsciousnesstriggerthedemandsforsavingenergyandreducingCO2emissions,whichgreatlyacceleratethedevelopmentofhighqualityESsheets.Tomeetthequalityrequirementsofhighefficiencymotorsandtransformers,highgradeESsheetswithhighfluxdensityarecontinuouslydevelopedandintroducedtothemarket.Meanwhile,thepricecompetitionandqualityimprovementofgeneralgradesareimportantforthelowerendapplication.Theironlossof50CS1300(50A1300)issignificantlyreducedbycontrollingsomekeyparameters.Otherthanthenormalgrade,thehighestgradesofnonoriented(NO)ESaresuccessfullydevelopedrecently.Andallspecificationsof0.50and0.35mmamongJISC2552specificationcouldbeprovidedbyCSC.Astotheinsulationcoatingdevelopment,theCr-freeinsulationcoatinghasbeenintroducedtothemarketduetotheenvironmentalconcern,andhasbeenenormouslyadoptedinTaiwanmarket.Furthermore,thethickerinsulationcoatingtechnologyhasbeensuccessfullydevelopedforspecificwindpowergeneratorapplication.ThenewlydevelopedproductsandqualityimprovementsofelectricalsteelsheetsinChinaSteelareintroducedinthispaper.
简介:ThechallengingconditionstoChina’ssteelindustrycurrentlyare:insufficiencyofnaturalresources,namelyironoreandcokingcoal,overcapacityofexistingfacilities,overconsumptionofenergyandheavyimpactonglobalenvironment.ThehealthydevelopmentofChina’ssteelindustrydependsonhowwecoulddealwiththesechallenges.
简介:Suggestionshavebeenputforwardspeedingupthedevelopmentofhigh-leveltoolsteelandmoldsteelinChinabasedontheanalysisofproductsanddevelopmentstatusofspecialsteelhomeandabroad.Feasibilityandnecessitytoproducehigh-leveltoolsteelandmoldsteelbyapplyingthesprayformingmethodinfuturehavebeenputforward.
简介:ToimprovethemechanicalpropertiesofWC-Al2O3composites,theeffectsoftraceamountofCeO2additivesonthemicrostructureandmechanicalpropertiesoftheWC-Al2O3compositespreparedbyhotpressingwereinvestigated.TheresultsrevealedthattheWC-Al2O3compositesdopedwith0.1%CeO2possessedrefinedmicrostructureandenhancedmechanicalpropertiescomparedwiththatoftheundopedWC-Al2O3composites.TraceCeO2suppressedthedecarburizationofWC,promotedthemicrostructuralrefinement,andimprovedtheinterfacecoherenceoftheWCmatrixandAl2O3.When0.1%CeO2wasaddedtotheWC-Al2O3composites,theeffectofCeO2resultedintheachievementofarelativedensityof98.82%withanexcellentVickershardnessof16.89GPa,combiningafracturetoughnessof9.85MPa·m1/2withanacceptableflexuralstrengthof1024.05MPa.
简介:Overthepast10years,China'ssteelindustryhasmadeasubstantialdevelopmentintermsofscale,andhasfinallybecomeasteelgiantintheworld.Intheupcoming10years,fundamentalchangeswillbemadewiththeeconomicgrowthinChina.Againstthisbackground,China'ssteelindustrywillshiftfromarapiddevelopmenttoaslowbutsounddevelopment.InordertofulfillthesecondleapofChina'ssteelindustry,basedonitscurrentdevelopingstatusandcharacteristics,andfromtheperspectiveofbothnationalandcorporatedevelopment,mergersandacquisitionarebotheffectivewaystoraisethequalityoftheexistingstockofassetinthesteelindustry,whiletechnologicalinnovationisthesolidfoundationforitssecondleap.
简介:Steelmakingisenergyandmaterialintensive.Thatiswhysteelisalwaysdemonizedandconfrontedwithincriminationsandrequirementsforreductionofitsenvironmentalimpact.Thosepuredemands-likeforemissiontradingareshort-sightedastheydonotbaseonanintegratedapproach.InsteadtheymerelyconsiderCO2emissionsduringtheproductionprocess.Aforward-looking,globalclimateandenvironmentalpolicyneedsasustainablelifecycleapproach.Thereforeitmustforexamplealsotakeintoaccountthecontributionofsteeltowardscuttingemissionsinitsapplication-intheenergy.automotiveandhouseholdsectors.Steelwillplayakeyroleinclimateprotection.One-thirdoftheremainingCO2reductiontargetplannedinGermanyby2020canonlybeachievedwiththehelpofinnovativesteelproductsandtheirapplications.ThisistheconclusionofanindependentstudybyTheBostonConsultingGroup(BCG)onbehalfofSteelInstituteVDEh,andGermanSteelFederation.ThestudycomparesCO2savingsfromimportantinnovativesteelapplications(suchasmoreefficientpowerstations,windturbines,orlightervehicles)withCO2emissionscausedbysteelproduction.Byadoptingthiscomprehensiveperspective,thestudyforthefirsttimeprovidesaCO2balanceforthematerialsteelbycomparingtheCO2reductionsmadepossiblethroughinnovativesteelapplicationswiththeCO2emissionsresultingfromsteelproduction.ThebalancewascalculatedonthebasisofeightselectedinnovativesteelapplicationsinGermanyfortheperiod2007to2020,wherebytheCO2emissionscausedbysteelproductionwereconsideredthroughouttheentirelifecycleoftheparticularsteeluse.Fortheselectedexamples,theuseofinnovativesteelsresultedinatotalsavingspotentialof74MtofCO2in2020.Thecalculationsarebasedonconservativeassumptions;forexamplewithoutcountingofpotentialsbyexportedsteelorbycomparisonwithcompetitivematerials.TheproductionofsteelinGermany,includingtheextractiono