连续热镀锌工艺对IF钢力学性能的影响

IF,,(,201900):IF,,IF:;IF;;:TG113125:B:1008-0716(2001)02-0009-05InfluenceofContinuousHotDipGalvanizingProcessonPropertyofIFSteelCHENGGuo2pingYUANMing2shengZHANGHong(BaosteelTechnicalCenter,Shanghai201900,China)Abstract:TheinvestigationaboutthemaintechnologicalparameterswhichaffectthepropertyofIFsteelismadeinthepaper,includingannealingtemperatureofeverysection,speedofstrip,tensionofan2nealingandtemperingrate.Theresultshowsthattemperature,tensionofannealing,andtemperingratearethemainfactors.KeyWords:Continuoushotdipgalvanizing;IFsteel;Annealing;Tempering1,2090,:36%33%16.5%;:42%31%25%[1],(),,[25],(IF)197319982664710890IF,:ST06ZST07Z,,1t[6],,,IF2,121Table1Chemicalcompositionofteststeel%CSiMnPST.AlNTi0.0030.0120.150.010.0050.0580.00160.0829200122Table2Technicalparemetersforpreprocedureofsamplemmmm%12209206603.50.8784.51.0785.71.574220mm70mm,CCT-AWY1,F1,F2,F3,,,35mm220mm,JIS5#,1Fig.1AnnealingprocessofhotdipgalvanizingGleeble1500JIS5#,14mm8mm0750N,33.1F1F2IF80m/min,F1F22(a),720800,F2,,rn;F2800,r,800,F1IF,rn800,F1,800,IF840,F1IF2(b),500800,F1IF3.2F3IFF1=650,F2=840,80m/min,F3IF3,F33.3IFF1=700,F2=840,IF41.5mm,60m/min150m/min,1.5mm,,,,nr,,nr,01200122F1F2IFFig.2InfluenceofF1andF2temperatureonpropertiesofhotdipgalvanizingIFsteelsheet3F3IFFig.3InfluenceofF3temperatureonpropertiesofhotdipgalvanizingIFsteelsheet3.4IF0750N,5,,n0,n0.3148%;750N,n0.2641%n100650N,n,,0750N,6MPa,3.5IF,IF,6,,n,11IF4IFFig.4InfluenceoflinespeedonpropertiesofhotdipgalvanizingIFsteelsheet5IFFig.5InflusenceofconstantloadonpropertiesofIFsteelafterannealing6IFFig.6InfluenceoftemperingrateonthepropertiesofIFsteelsheet4,(7),60s,650,780,,,870,10s;,,F2800(840),,F1F2800,,,F1,,F1750,F2,,(F1=700,F2=840),,2120012,,nr,,,,7(1.0mm)Fig.7InfluenceofcontinuousannealingconditionontheprocessofrecrystallizationIF84030MPa,,,nIF,,,,,n,5(1)IF(2),,;,,(3),(4),1111999,:,1999:13182,11,1998;(3):38423,,11,1998;33(10):68724,11,1997;32(11):72765Pradhan.R.Coldrolledinterstitialfreesteels:Adiscussionofsomemetallurgicaltopics.InternationalforumofphysicalmetallurgyofIFsteels,IF-IFS-94,Tokyo,May10-11,1994;165178611,1999;34():902905(:2000-11-09)31IF