外文翻译包钢环形炉管坯加热温度测试和研究.docx

外文翻译包钢环形炉管坯加热温度测试和研究.docx

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外文翻译包钢环形炉管坯加热温度测试和研究

附录

附录A（英文文献）

HeatingTemperatureMeasurementofSlabRotaryFurnaceinBTCO

XuZhanhai.LiuGuangting

（BaotouIronandSteel（Group）CorporationSeamlessSteelTubePlant,Baotou014010,China）

    Abstract:

theringofcontinuouscastingbilletheatingfurnaceactualtemperaturewithinthetestequipmentandmethodstotheCCSapplication,forexample,analyzedtheeffectoffurnaceheatingcurrent,thecorrespondingimprovements,andtoexplorethemathematicalmodelcontrolandthedelaystrategy.

    Keywords:

AnnularHeating:

Temperaturetest:

mathematicalmodels:

delaystrategy;blackbox

    Keywords:

TC307Documentcode:

AArticleID:

1001-6988（2009）03-0007-02

HeatingTemperatureMeasurementofSlabRotaryFurnaceinBTCO

XUZhan-hai,LIUGuang-ting

（SeamlessStellTubePlan,t（Group）Corporation.,Baotou014010,Chin,a）

    Abstract:

Thehightemperaturemeasurementequipmentandmethodfortheheatingofcontinuouscastingslabintheannularfurnaceareintroduced.BasedontheexamplesofapplicationsinBTCO,theheatingeffectisanalyzed,theadvancedmeansaregiven,andthemathematicalmodelanddelaystrategyarediscussed.

Keywords:

annularfurnace;temperaturemeasurement;mathematicalmodel;delaystrategy;blackbox

    Railsteelfurnaceoperationoptimizationgoalistomeettherequirementsofrollingprocessandthebilletcross-sectionbilletheatingtemperatureunderconditionsoftemperatureofthefurnacefuelconsumptionatleast.Unabletoaccuratelygraspthebilletheatingfurnacecurve.Commonlyusedmethodisbymeasuringthesurfacetemperatureontheslabafterthereleaseintothevalueorbilletrollingmillbilletheatingconditionstoestimatethesituation.Happenstoberollinginthefurnace,peoplewillhavebigoperatingblindness,inordertotimeoutofsteel,oftenleavingalargesurplusamountoftemperaturewillnotonlyresultinwasteoffuel,andburningbyoxidation,suchasbilletdamage,sometimesresultinginsteels.

    Billetheatingfurnacethroughtheprocessoftestingandresultsanalysis,quantitativeresearchbilletgastemperaturedistributionandvariationoftemperatureinthefurnaceandbilletcross-sectioncorrespondingrelationshipbetweentemperaturevariation,theinfluenceofdifferenttypesoffactorsandthequalityofbilletheatingfurnacestructureproblems,asthefurnaceyield,lowcost,high-quality,lessoxidationtoprovidediagnosticmethodsandimprovements.

Inthispaper,hightemperaturetemperaturetester（blackbox）,SteelPlantofBaotouSteelbilletheatingfurnaceringdynamictemperaturetesting,analysisbilletinthefurnacetemperatureprofilethroughouttheheatingprocesstoidentifytheexistingproblemsandsolutions.

Anexperimentaltestequipmentandmethods

1.1Experimentalequipment

    HightemperaturetestequipmentbytheSMTboxrecorderandinsulationcomponents,alsocalled"blackbox."TemperatureRecorderTemperaturerange:

K-typetemperaturerange-100-1290℃,resolutionof0.5℃,measurementerror0.5%:

S-typetemperaturerangeof0~1450℃;resolutionof1.0℃,measurementerror0.5%;Channels14channel;memory,64kB;temperaturedata43000:

samplingcycle25/sltimes/8h;dataloggersworkingconditions,thetemperature1300℃for6h.

1.2ExperimentalMethods

    Experimentsselectedingredients,sizeandrepresentativeastheexperimentalbilletbillet.Livinginthebilletsofdifferenttemperaturesettingsanddifferentdepthholestoplay,whilemeasurementoftheintegratedsteelbilletfurnacegastemperatureatthetop.UsingK-typethermocouple,orS-typethermocouple,dualwireletterl.0mm,insulatedporcelainjacket.Recorderthroughthecomputerprogram,setthesampleperiodis1/20s.

    Couplethehotendofthebillettemperaturefirmlyintothehole.Thecoldsideofthepositiveandnegativewiththerecordercorrespondstothepositiveandnegativeconnections.Atthesametimerecordertorecordthenumberofchannelsrepresentedbytheinterfacebillettemperatureholelocations.Incubatorplacedinthebilletends.Cabinetsfilledwithfire-resistantfiberfelt.

Blankexperiment,afterthereleaseandthroughtherollercraneislocatedintheexperimentalblankspacetomove,standingforsometimeafterthetemperaturedropbox,removetherecorder.Withthecomputerconnectedtotherecordertosavedatatoacomputer,cometobilletheatingcurveandthetemperaturechangeinthedirectionalongthecurveofthefurnace.

2Experimentalresultsandanalysis

    Diameterringfurnace35m,withhighcokemixedgasfuel.ExperimentalbilletsizeQ270mmx3300mm,madeofXCQ-16,rollingspecificationsfortheWest219mmx5700mm.Billetinthefurnaceexperimenttime200min.Bakedslabtemperature1280℃,bakedinthetemperaturedifferenceontheslab5℃.

2.1billetheatingcurve

Billetplacedintherealseabed.Billetcentertemperatureandsurfacetemperatureunderbasicallythesame.Billetsheatedto750℃,billetsolidtransformationendothermicphasechangebecausetheheatingratebecomessmaller.Billettappingtemperature1280℃,thetemperaturedifferenceontheslabreleased5℃,theupperandlowertemperature3℃.170mmbilletheatingtemperatureafterthe1280℃,thentheupperandlowertemperature30℃.Billetheatingtemperatureistoolargeistoproducerollingstress.Perforatedwallthicknessuniformityofthemainreasons.Heatingtemperatureistoohighbecausetheroofisinstalledorthethermocoupleprobeintothefurnacedepthisinappropriate,notatruereflectionofthefurnacetemperature,thepositionadjustmentofthethermocouple,themeasuredactualfurnacetemperature.BillettemperaturecurveshowninFigure1.

Figure1billetheatingcurve

2.2Thetemperaturedifferencebetweenthecross-sectionbillet

    Billetduringthephasetransitiontemperaturebecauseoflowerthermalconductivity,themaximumtemperature,maximumtemperaturedifferencedownto250℃.110minheating,thetemperatureonthemaximum184.7℃.Afterthebilletheatingtemperaturereached168minl300℃,thentheupperandlowertemperature31℃.200minheatingbaked,thetemperaturedifferencebetweenupperandmiddlesectionsonly4.2℃,theupperandlowertemperature3.7℃,thetemperatureunder10℃.Billetreleasedafter5min,thelower,upperandlowertemperaturetodecrease,thelowertemperaturedecreases6.4℃.Surfacetemperaturedropofabout12℃,thecentraltemperaturedropofabout3℃.Releasedtotheopenrollingneedfromthe50sorso,bakedsurfaceandcentertemperatureat30℃isfeasible.

Cross-sectionbillettemperaturecurveshowninFigure2.

Figure2cross-sectionbillettemperaturecurve

2.3Furnacetemperature

    Experimentalmethodisthelengthoftheslab,installedathermocouple,canmeasurethewholefurnacetemperaturedistribution,thefurnacestructure,arrangementofnozzles,heatregulation,inspectionpointbasisforimprovementoflayoutandoperations.

    Thetesttubealongthedirectionofuniformlengthof3testpoints,thetestfoundthatsoakingSecbilletfurnacetemperatureislowerthanthetemperature,whichwillhelpfurtherreducethetubecross-sectiontemperaturedifferenceofage.Helptoimprovetheheatingquality.Thetraditionalsystemisstillrequiredthermaldischargeonthenearsideofthesegmentarehottubesurfacetemperatureishigherthanthetemperaturecontrol.Experimentsshowthatthisdoesnothelptoreducethecross-sectionwhenthetemperaturedifferencebetweentubebaked,notconducivetoimprovingthequalityofrolling.Withthecontrolrequirementstoberolledinalongtime,wemustreversethebottom,soasfaraspossibleawayfromthetubedoorhandle,andslightlypositivefurnacepressurecontrolshouldbeadoptedtoavoidtobereleasedafterrollingafewpiecesofsteelbilletsteelbillettemperatureistoolowphenomenon.Experimentsshowthatthewidthdirectionalongthefurnacetemperaturedistributiondifferences,mainlyairandheatingsystemisnotreasonabledisturbancecaused.FurnacetemperaturecurveshowninFigure3.

Figure3gastemperaturecurve

2.4Thetemperaturedistributioninbilletlength

Billetlengthalsoaffectsthetemperatureuniformityofproductquality,especiallyforlongmaterial,showninFigure4.Theshortexpected,thelengthofbillettemperaturedifference,butintheenhancedheatingoftheheatingsection,becausetheuseofcross-fabric,hightemperatureisthetemperatureatbothendsofthemiddletemperatureislow.

3Conclusion

    Theforegoinganalysis,ahigherflametemperatureoxygencombustion.Canimprovetheheattransferefficiencyandenergyefficiency:

Youcangetabetterignitioncharacteristics,improvedflamestability:

theflamespeedincreases,youcanexpandthefireloadratio,improvedflamecharacteristicsandflameshapecontrol;smokereduction,canincreasetheproductionflexibility.

    Inadditiontooxygen-enrichedcombustioncanbeappliedtometalheatingandmelting,glassmeltingandroastinghigh-temperatureheatingofmineralindustries,heattransferefficiencyislowinthosewhoaffectproductivity,increaseheattransferbutdoesnotaffectproductqualityandnotduetorestrictedexhaustsystemtoincreaseproductivityandsotheheatingarea,thepotentialapplicationofoxygen-enrichedcombustionwillincrease.

References:

[1]MuzhuSheng,ZhaoYanrecorded,ChenFu.Oxy-Fuelfloatglassfurnacetechnicalandeconomicanalysisandcomparison[J].Glass,2008（6）:

13-16.

[2]Zhaistate.OxygenburningstoveEconomicAnalysis【J].Industrialfurnace,2008,30（3）:

30-33.

[3]JOSHISV,BECKERJS,LYTLE