简介:Thehistoryofthedevelopmentofthetube&pipedivisionofBaosteelwasreviewedinthearticle,focusingontheprocessoftechnicalinnovationandtheproductcategoryenrichment.Thankstothetechnicalinnovation,theφ140productlinehasbecomethemostefficientoneintheworld.Withtheadvanceofconglomeracyandtheconstructionofthemostadvancedweldpipelineandtheφ460premiumqualityfinishing(PQF)line,thecatalogueofBaosteeltube&pipeproductshascoveredtheextensiverangefromthehotrolltocoldroll,theseamlesstothewelded,andalloftheproductdimensionscopefrom25.4mmto610mm.Tomeettherequirementsofrelevantindustriessuchasenergy,transportation,machinery,ammunitionandotherrelevantindustries,theproductvarietyisdivertingfromcarbonsteeltoalloysteel,stainlesssteelandspecialalloys.AstheBaosteelSteelTubingPlantincreaseditsnumberofproductionunits,expandeditsproductioncapacityanddevelopednewproducts,ithasgrownintoapipeandtubesupplierwithglobalcompetitiveness.
简介:Baosteel's5mheavyplateplantwassuccessfullytestedonMarch1,2005.Sincethen,theHeavyPlatePlantofBaosteel(hereinafterreferredtoas'theplant')hasbeenencouragingitsemployeestostudyandtracetheadvancedheavyplatetechnologies,tryingtofindouttherulesofheavyplateproductionanditsqualitycontrol.TheplanthasgraduallymasteredthismodernheavyplateplantandensuredthatBaosteel'sproductionofheavyplatesgrewyearbyyear,with1.41Mtproductputinstoragein2007.Theplanthasfocusedondevelopingnewtechnologiesandproducts,meanwhileenhancingitscapacity.Ithasproducedaseriesofplateproducts,whichcanbeusedinmanufacturingshiphulls,pipelines,bridges,buildings,boilersandpressurevessels.
简介:AseriesofimprovementsinprolongingtheAODrefractorylininglifeinBaosteelareintroducedandanalyzedinthispaper,includingmodificationoftheAODshellshape,adjustmentofthetopslagcomponentsandselectionoftheside-blowingtuyeres.Firstly,thelayoutofside-blowtuyereswasalteredwiththeanglebetweeneachtwotuyeresbeing22.5°insteadoftheoriginal18°,andtheconnectionoftheoutsidesteelshellintheside-blowareawasmodifiedfromtheformerplatformshapewithgreatstressconcentrationintoanewsmoothcircleshape.Secondly,theslagcomponentswerechangedfromtheformerCaO-FeO-SiO2systemtotheCaO-MgO-SiO2system.Besides,thebasicityofthetopslagwaskepthigherthan1.8,andtheMgOcontentintheslagwaskeptwithintherangeof8%-12%.Finally,tuyereswithaninnerdiameter13%smallerthanthatoftheoriginaltuyereswereused.Basedontheseresearchandoptimizationwork,thethermodynamicsandkineticsintheAODrefiningbathhasbeenimprovedmarkedly,andthecampaignoftheAODhasbeenprolongedfrom45heatsatthebeginningofitsstart-uptothecurrent185heats.Meanwhile,theyieldofchromiumalloyandthedecarburizationefficiencyhavealsobeenimproved.
简介:Inordertostabilisetheoperationoftheblastfurnaceandtoraiseitsoperationefficiency,researchworksfortheapplicationofmicrowaveandlaserscanningtechnologiestothemeasurementhavebeenintensivelycarriedoutatChinaSteelCorporation(CSC).Tomonitortheburdenprofileduringtheoperation,amicrowaveburdenprofilemeasuringsystemwasdeveloped.Thesystemconsistsofaradarunit,asignalprocessingsystem,andadrivingdevicewhichiscapableofrotatingtheradartoscantheburdensurfaceinaspecifieddirection.Anitrogencoolingsystemwasdesignedtoprotectthemeasurementsystem.AprototypeburdenprofilemeterwassuccessfullytestedinNo.1blastfurnacein2008,andapermanentonewasinstalledatNo.3blastfurnace.ThesystemhasprovidedusefulinformationforadjustingthechargingsequenceinNo.3blastfurnace.Foranotherapplication,3-Dlaserscanningtechnologyisemployedtomonitortheblastfurnaceliningcondition.Tothisend,adataregistrationmethodhasbeendeveloped,throughwhichtwomeasuredrangeimagessensedatdifferentperiodandlocationscanbefittedintothesamecoordinatesystem.Inpractice,theerosionoftheblastfurnaceliningcanbeestimatedwhenthecurrentinnerprofileiscomparedwiththattakenbeforetheblow-inoperation.ThistechnologyisalsoadoptedtoevaluatetheperformanceofgunningoperationintheblastfurnacesatCSC.