硬线钢中非金属夹杂物控制

315200510Vol131No15SteelWireProductsOctober2005(100083)(100041),,,,Al2O37%,wAl(25)10-6,5mm,,O,,;;;;TF111.18ControloftheNon2MetallicInclusionsinHardWireSteelsWangXinhua(UniversityofScienceandTechnologyBeijing100083)WangLifeng(ShougangTechnologyResearchInstituteBeijing100041)AbstractTherequestsforthenon2metallicinclusioncontrolaredifferentofhardwiresteelswhichproductsareindiffer2entdiameters.ForTyrecordsteels,lowerbasicityslagshouldbeusedinthesecondaryrefiningandtheAl2O3contentoftheslagshouldbelessthan7%.The[Al]intheliquidsteelshouldbecontrolledwithintherangeof(25)10-6soastoformdeformableinclusionsinthesteels.Forsteelsofhighstrengthprestressedwireandstrandedwirewhichdiametersareusuallylargerthan5mm,methodofaluminumdeoxidationinsteelmakingcanbeusedtolowerthe[O]content.Inaddi2tion,slagofhighbasicityandlowFetOcontentshouldbemadeinthesecondaryrefining,throughwhichsmallsizedspheri2calnon2metallicinclusionsofCaO2SiO22Al2O3systemareformed.Keywordshardwiresteels;steelcord;strandedwire;non2metallicinclusions;secondaryrefining,:(1),-,;(2),;(3),,1,T.MalkiewiczS.Rudnik[1]:=is=23lnlnh=23lglgh(1)i=ln=lnBA(2)s=32lnh=32lnA0A1(3)(1)(3):B,m;A,m;A0,m2;A1,m2=0,©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=1,,S.Ruddnik[2],=0.51.0,;=0.030.5,;=0,T.Gladman[3](Fe,Mn)OAl2O3,,MnS-801260G.Bernard[4]CaO2Al2O32SiO2MnO2Al2O32SiO2MnO2Al2O32SiO2,(3MnOAl2O33SiO2)(1a)CaO2Al2O32SiO2,(CaOAl2O32SiO2)(CaOSiO2)(1b),2510mm,0.150.38mm,,,5.5mm0.150.38mm,2000r/min,,,[5],2%,,,0.150.38mm,37.6m,,,,,37.6m2,3m01©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[Mn]+[O]=(MnO)(4)[Si]+2[O]=(SiO2)(5)Al(10-6),Al,2[Al]+3[O]=(Al2O3)(6)lgaAl2O3f2[Al]wAl2wO3=78110T-24.81[6](7)Mn,Al,AlSi,4[Al]+3(SiO2)=3[Si]+2(Al2O3)(8)lgf3[Si]wSia2Al2O3f4[Al]w4Ala3SiO2=159140T-30.51[6](9)(9)lgwAl=lgf3/4[Si]wSi3/4a1/2Al2O3f[Al]a3/4SiO2-39785T+7.628(10)0.7%0.25%0.6%,[6-10]CaO2SiO22Al2O3Al2O3SiO2,(10)(8)AlAl(7),CaO2SiO22Al2O3O31873K(8)CaO2SiO22Al2O3Ala[O],3,,,Al(25)10-6,a[O]0.0030.0053b,CaO2SiO22Al2O3,Al2O310%25%,wCaO/wSiO20.350.5Al2O3wCaO/wSiO2[11]1873K,4AlAl2O34,AlAl2O3,Al(26)10-65Al2O3Al,11©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(26)10-6,Al2O37%,Al2O3,Al2O3,Al2O37%4AlAl2O35Al2O3AlwCaO/wSiO2,,,SiO2Al2O3,SiO2Al2O3(10),SiO2Al2O3,Al6(10)AlAl2O3,AlAl2O310%,1,Al410-6;2,Al1810-6,,,Al,PC6Al,(wAl=0.005%0.02%),,7Gaye[12]Al,Si,Mn16007Fe2Al2Si2Mo2O7,wAl=0.005%0.02%,Al2O3Al2O3(8a,b)Al2O3,,,Al2O3,,-,CaO21©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(8b),,99,9,,,wAl(26)10-6,a[O],0.00250.00505mm,9,,wAla[O](1570)10-60.00100.00255mm,9,wAl(70200)10-6,a[O]0.00040.0010,,,O,,4(1),,,,(2)-,Al,Ca,O,Al,Ca,O(3),,wAl(25)10-6,Al2O37%(4)5mm,,O,,91T.Malkiewicz,S.Rudnik.DeformationofNon2metallicIn2clusiononthePropertiesofSteel[M].JISI,1963,201(1):33382S.Rudnik.DiscontinuitiesinHot2rolledSteelCausedbyNon2metallicInclusion[M],JISI,1966,204(4):374-376.3T.Gladman.DevelopmentsinInclusionsControlandTheirEffectsonSteelProperties[J].IronmakingandSteelmaking,1992,19(6):4574634G.Bernard,P.V.Ribound,G.Urbain.OxideInclusionsPlasticity[M].LaRevuedeMetallurgie2CIT,1981,78(5):4214335D.L.Runner,S.Maeda.Start2upofTireCordThroughUSS/KOBE’sBilletCaster[M],1998SteelmakingConferenceProceeding,Toronto,1998,81:1291366E.T.Turkdogan.FundamentalsofSteelmaking[J],TheIn2stituteofMaterials,TheUniversityPress,Cambridge,UK,1996719,()[J],1984(10):2558C.E.Sims.TheNonmetallicConstituentsofseel[J].Trans2actionsoftheMetallurgicalSocietyofAIME,1959,215:367393(20)31©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1)(2),(3)(4),,(:2005-08-26)1963,,,(13)9HirokiOhtaandHideakiSuito.ActivitiesinMnO2SiO22Al2O3SlagsandDeoxidationEquilibriaofMnandSi[J].MetallurgicalandMaterialsTransactionsB,1996,27B(4):26327010.[M].:,1998.8611,,,.CaO2Al2O32SiO2[J].,2004,39(1):212312HenriRGaye.TheMaking,ShapingandTreatingofSteel(Chapter3ofCastingVolume),TheAISESteelFounda2tion,Pittsburgh,2003(:2005-09-15)19513,,19748,02©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.