简介：Highperformancecontrolofaninteractiveprocesssuchasironandsteelplantreliesonabilitytohonorsafetyandoperationalconstraints;reducethestandarddeviationsofvariablesthatneedtobecontrolled(e.g.productquantity,quality);de-bottleneckingtheprocess;and,maximizeprofitabilityorlowercost(e.g.energysavings,improvehotmetalcontent).Theseobjectivesmaybeprioritizedinthisorder,butcanvaryandareverydifficulttoachieveoptimallythroughconventionalcontrol.Amultivariablepredictivecontrollersolution,alongwithitsextensiveinferentialsensorandbuilt-inoptimizer,providesonlineclosedloopcontrolandoptimizationformanyinteractivemetalandminingprocessestolowertheenergycost,increasethroughput,andoptimizeproductqualityandyield.Controlloopperformanceisalsoakeyfactortoimproveironandsteelplantautomationandoperationresult;HoneywellCPMoffersvender-independentproductwhichprovidesmonitoring,tuning,modelingofcontrolloopandsustainableloopperformanceanalysisandmaintenancesolutiontowardsoperationstabilityandenergysaving.

简介：Therecentrapiddevelopmentsintheautomobileindustryhavedemandedtheextensiveuseofgalvannealed(GA)steelsheets.Inparticular,thedevelopmentoflightweightautomobilesisputtingincreasinglyhigherrequirementsonthestrengthofGAsteelsheets.Thegalvannealfurnace,whichisusedforprocessinggalvannealedsteelsheets,istypicallycomposedoftheinductionheatingsection,holdingsectionandfogcoolingsection.Thispaperdescribedthestructuralcharacteristicsofeachcomponentofthegalvannealfurnace,andanalyzedtemperaturecontrolmethodsofthegalvannealfurnacethatareimportantforthesuccessfulproductionofhigh-strengthGAsteelsheetsforautomotiveapplications.

简介：ThispaperintroducesACvariable-speeddrivingcontroltechnologyapplicationinthecontinuousannealingline,includingthedrivesystemconfiguration,thedrivingcontrolcharacteristicsofCALandthemaincontrolfunctionsofthedrivesystem.Firstlyintroducesthemainprocessofthecontinuousannealingline,thefeaturesofthe6SE70seriescommonDCbusdrivesystemandtheG150seriesdrivesystem.Secondly,forthecontinuousannealingline,therearemorestrictrequirementsforthecontinuityofproductionandmorespecialrequirementsforthedrivecontrolcharacteristics.Wedoalotofimprovementandstandardizationforthedrivingcontrolfunctionsandtheinterfacesofthelineautomationcontrolsystem.Thispaperdiscussesthecommunicationinterfacespecificationsandthedimensiontransformationmethodsbetweenthedriveandthebasicautomationsystem.Thedetaildimensiontransformationmethodsandcalculationmethodaboutthelinespeedsettingandtheactualrollerdimensionsettingaregiven,anddetaildescriptionforthecalculationmethodofthereferencespeedinthedrive.Articlealsoemphasizedillustratesrealizingandtestingmethodsofinertiacompensationofequipmentinthedrives,andstandardizethevalueoflineaccelerateanddeceleraterate,andtheinertiatestmethodandinertiacompensationcoefficientcalculationmethodisintroducedinthispaper.Forthebridgerollersandfurnacehelprollersloadbalancecontrol,thispaperpresentstwodifferentloadbalancecontrolstrategies,theloadbalancecontrolprincipleforbridgerollerswhichdatacommunicatesfrommainstationtoslavestationsbySimolink,andtheloadbalancecontrolprincipleforfurnacehelprollerswhichusedroopcontrol.Thedifferentcharacteristicsofthosetwomethodsarestatedindetail.

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简介：Sometimesmaindrivermotors’torqueexceedsthemaximumlimitinBaosteel’s5mheavyplatemill.Experienceshowedthattorqueoverloadedoccurredincasesofsomespecialrollingsequenceandspecialrollingplatedimension.Mostoftheoverloadedoccurredonlyinstantaneousatsometimepointduringtherollingpass,whichespeciallyeasilyhappenedatthebiteandmotoraccelerationtimeafterthebite.Thispaperanalyzestheimpactfactorsformotortorqueoverloadandcarefullystudiesthekeydetailsofthemillrollingspeedcontrol.Thesolutiontoimprovethespeedcontrolwasgivenatthepreconditionofkeepingproductionyield.Theimplementationofthesolutionsignificantlyreducedtheoccurrenceoftorqueoverloadedtimes.

简介：Thecenterlinesegregationincontinuouscastingsteelisknowntobeformedbytheinterdendriticenrichedliquidflowatthesolidificationendinstrand.Atpresent,severalmethods,suchasthermalsoftreduction,electromagneticstirringanddynamicsoftreduction,areavailabletoreducethecentersegregationandtoimprovetheinternalquality.Althoughsomemethodscouldalleviatecentersegregationtosomeextent,theycanalsogiverisetonewproblems.Forinstance,thermalsoftreductioncanleadtosurfacecrackingduringcastingofsomesteelsandelectromagneticstirringcanresultinwhiteband.Dynamicsoftreductionisaneffectivetechnologyfortheimprovementofstrandqualityincontinuousslabcasting.Inthispaper,thekeyparametersofdynamicsoftreductiontechnology,suchassoftreductionregion,thetotalreductionamount,forlowcarbonsteelhavebeenstudiedbasedonexperimentalandtheoreticalanalysis.Thesoftreductionregionwasrelatedtothesegregationofchemicalcomposition,slabbulgingofnarrowsideandavoidinginternalcrackofslab.Thetotalreductionamountwascomposedofnaturalthermalshrinkageandactualreductionamountdependingoncriticalstrain.Forlowcarbonsteelwithslabdimensionof(950-1950)mm×170mm,thesolidfractionrangeinsoftreductionregionwasrecommendedfrom0.4to0.8,thetotalreductionamountwas2.0-2.8mm,andtheoptimizedreductionratewas0.4-1.2mm/min,respectively.Furthermore,adynamicsoftreductionsystemincontinuousslabcasting,VisualCast-Dynamic,hasbeendevelopedbymultithreadingmethod.Itdemonstratedthatthedynamicsoftreductionmodelinthisstudywascorrectwiththeabilityofonlinecontrol.

简介：Inthispaper,theflatnesscontroltechnologyAnShaperTMforcold-rollingmillandindustryapplicationareintroduced.AnShaperTMincludes;partitioningpiezomagneticshapemeterforflatnessmeasurementforcold-rollingstrip;flatnessmeasuredsignalsprocessingsystembasedondigitalsignalprocessing（DSP）;flatnessfeedbackcontrolmodelsystembasedonthecontrolefficiencyofflatnesscontrolactuatorsandmodeladaptivefunction.TheapplicationverifiesthatstripflatnesscanmeettheneedofhighqualityproductbyusingAnShaperTM.Theaverageflatnessqualityisabout5Ⅰ-unitandthe0.18mmultrathinthicknessstripflatnessis10Ⅰ-unit.

简介：针对鞍钢5号中薄板坯连铸机技术改造工艺布局所遇的种种障碍，阐述在老厂保产条件下快速、高效完成机电安装。同时，应用了在线设备专家诊断系统、二次冷却、漏钢预报等新技术。

简介：Someofthemaincoolingprocessesandequipmentthatarecurrentlybeingusedinthecontinuousannealingprocessline(CAPL)atBaosteelareintroduced,aswellastheircoolingcontrolmodeltechniques,themodelingprincipiumandtheirapplicationresults.Withchartsindicatingthecontroltrendsinrealprocesses,thepowerfuladjustingabilityofthecontrolmodelswithprocessvariabledifferencesandtheirexcellentcontrolprecisionareshowninthisstudy.

简介：有色金属的分类很多，大约有80多种，大致按其比重、价格、在地壳中的储量及分布情况和被人们发现与使用情况的早晚等分为五大类。（1）重有色金属；指比重大于4．5的有色金属。包括铜，镍，锢，铅，锌，锑，汞，镉和铋。（2）轻有色金属；指比重小于4．5的有色金属。包括铝，镁，钙、钾、锶和钡。（3）贵金属；指在地壳中含量少，开采和提取都比较困难，对氧和其它试剂稳定，价格比一般金属贵的有色金属。包括金、银。和铂族元素。一般比重都较大，熔点较高在916—3000度，有很好的化学稳定性、优良的抗氧化性及耐腐蚀性。（4）半金属；一般指硅、硒、碲、砷和硼五种元素。其物理化学性质介于金属和非金属之间。如砷是非金属，但它能传热和导电。

简介：Toimprovetheprecisionofthecoilingtemperatureandtheperformanceofthefeedbackcontrolsystemwithlongpuretimedelayonhotstripmills,weanalyzedthedesignprocessoftheDahlinalgorithmindetail.ThecoilingtemperaturecurvescontrolledbythePIDalgorithmandDahlinalgorithmweresimulatedandcompared,whichshowedthatthecontrolprecisionwiththeDahlinalgorithmwashigherthanthatwiththePIDalgorithm.Thatwasfurtherverifiedbytheproductionpractice.

简介：DynamicmodelcontroltechnologiesofsecondarycoolingandsoftreductionofBaosteelareintroduced.Modelprincipleandcontrolsystemarchitecturearesummarized,aswellasfunctionsandfeatures.Finally,applicationsofmodeltechnologiesarediscussed.Theself-developeddynamicsecondarycoolingmodelandthedynamicsoftreductionmodelhavebeenappliedonseveralcastingmachinesinsideandoutsideBaosteel,desiredcontroleffectswereachievedwithgoodstabilityandreliability.Temperaturemeasurementresultsverifiedthecorrectnessofmodel.

简介：Inthepresentstudy,sampleswereextensivelycollectedthroughoutthestainlesssteelmanufacturingprocess.Thethree-dimensionalmorphologyofinclusionswasrevealedbynon-aqueoussolutionelectrolysis.Thehighconcentrationofaluminuminferrosiliconcausedtheincrementof[Al]sinsteelandAl2O3ininclusions,whichledtothehighermeltingtemperatureofinclusions.ItwasconcludedthattheapplicationoflowAlferrosiliconandcalciumtreatmentcouldpreventtheformationofAl2O3-richinclusions.

简介：本文介绍了ABControlLogix5000系统在矿山充填的应用。主要介绍了ControlLogix5000控制系统结构，硬件构成，所含软件，控制系统所实现的功能及效果。

简介：BasedonthepracticeofBaosteel's60000m3/hairseparationunit(ASU),whichisthefirstdomestically-integratedunitofsuchascale,thispaperstudiestheprinciplesoftypeselectionofthedistributioncontrolsystem(DCS).Itdiscussesthedesignoftheunit'scontrolsystem,whichinvolvesacompressorsystem,apurificationsystem(molecularsieving),aturboexpansionsystemandanairseparationsystem.ThefinalpartofthepaperdiscussesthemaintenanceandfuturedevelopmentoftheASUcontrolsystematBaosteel.

简介：从离子型稀土矿床的地质特征与原地浸析采矿的工艺特点及其应用条件出发，首次时我国南方的离子型稀土矿进行具体分类．阐述了分类的原则、各类别特征及在原地浸析采矿工艺中特点，最终提出了分类总表。

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简介：Thecoilingtemperatureofthehotstriprollingprocessplaysanimportantroleinstripqualitycontrol.Thenewly-builtlaminarflowcoolingcontrolsystemwasindependentlydevelopedbyBaosteel.L2conductstotallydynamiccontrol(L1onlyexecutestheresultfromL2,anddoesnotconductanydynamiccontrol).Thesystemhasmanyadvantages,suchasquickreal-timecontrol,accuratemodelcalculation,quickresponseafterself-adaptation,etc.Comparedwiththe2050mmhotstriprollingline,thenewsystemcansatisfythestrictcoolingrequirementsofhighstrengthsteel,siliconsteelandheavyplatesbecauseofitsnewly-developedtechnologiesofcoolingratecontrol,stripcoolingbysectionsandproportion-integral-differentialcoefficient(PID)feedbackfuzzycontrol.

简介：受原燃料市场以及销售市场影响,鄂钢面临前所未有的压力,因此降低生铁成本成为高炉生产的主要任务。6号高炉通过采用降低矿石成本、降低高炉燃料比等措施,不断探寻低成本冶炼的方法。