宝钢高速区孔型优化

(,201900):,,2000,C,,5%;,,,,:;C;;:TG332+121:B:1008-0716(2004)06-0035-04ResearchonOptimizingBaosteelsWire2RodMillsPassscheduleinHigh2speedZoneYANGXiao(BaosteelLongProductsMill,Shanghai201900,China)Abstract:WhenBaosteelhigh2speedwire2rodmillwentintooperation,itsmostproductssizeaccu2racycouldnotcomeuptothedesignedvalueforsomefaultsinthepassscheduledesign.Since2000,re2searchworkonoptimizationofthepassscheduleinhigh2speedzonehasstarted.AstheshootingrateofclassCaccuracyhasbeenimproved,andtheproductsovalityhasbeencontrolled,thetotalyieldhasrisenby5%.TheuseofpartproductsfinishedonNTMhasreducedtheshutdowntimeforchangingofthepassscheduleseries,abatedtheloadofRSM,andloweredthefailurerateandconsumption.Allthesehavebeenasetofrecipes.KeyWords:High2speedwire2rodmill;ClassCaccuracy;Yield;Passoptimization1,,,,,,,,(:),,,,,1973199426648516,,,22.1,,C(),,,,12,,,22,,(1),(1)53200461Fig.1IllustrationofthecontinuousrollingprocessV1F1=V2F2==VnFn(1),V1,V2,,Vn1,2,,n,m/s;F1,F2,,Fn1,2,,n,mm2D,N(1),F1D1N1(1+S1)=F2D2N2(1+S2)==FnDnNn(1+Sn)(2),D1,D2,,Dn1,2,,n,mm;S1,S2,,Sn1,2,,n[1];N1,N2,,Nn1,2,,n,r/min(2),F,D,NS,,,,,,,2.2(1)20,,C40%,60%,199975.5mmC2C,,,,(2),,,,(:),,,2515mmCFig.2ShootingRateof515mmforClassC,199991.95%,,5(3)AB11Table1ClassificationofBaosteelhigh2speedwire2rodmillspassschedulesABC/mm5.05.520.024.025.021.023.0B,,1hBA(5.0mm),,3h,18.0mm,,C(4),,,,,,632004633.1,,,,,,,,,,,,,(3)B/B=Lc/(B0+0.5H0)FH/F0(3),B/B;Lc,mm;FH,mm2;H0,mm;B0,mm;F0,mm2;,,22Table2Experimentalcoefficient0.970.830.95,,,,,,,;,,;,,,,3.2(3),11.013.0mmC80%,C,90%32000CFig.3ShootingrateforclassCin2000,,,,,,,,,,,4,14,,,200297.12%734Fig.4Passoptimizationofacertainstand4,:(1)C90%,C40%80%,C90%,(2)AB,1,ABCBA5.0mm,,3hA5.0mmB5.5mm0.5mm,5.0mm155.5mm,16AB,,,B,AAB,152612224,112,5.0mm5.5mm3h1h,5.0mmB2h,,A,12,(3),,,,2,,,,,,,;,(4),,5519992002Fig.5Comparisonofwire2rodyieldinsizesbetween1999and20025,1000,,,,,1,..2,:,2000:1012,201208(:2004-09-10)8320046