搜索
42120071IronandSteelVol.42,No.1January20071,2(1.,100081;2.,100711):,,,,:222,;;;23,:;;:TF777:A:04492749X(2007)0120001207DevelopmentCharacteristicandDirectionofThinSlabCasting2RollinginChinaYINRui2yu1,SUTian2sen2(1.CentralIronandSteelResearchInstitute,Beijing100081,China;2.TheChineseSocietyforMetals,Beijing100711,China)Abstract:Chinabecamethecountryoflargestcapacityandoutputofthinslabcasting2rollinglinesintheworld.Nowtheeffortsareputonvarietiesdevelopment,qualityimprovement,adoptionofnewtechnologiessuchassemi2endlessrolling,ferriterolling,costreductionwithdomesticsupplyofrefractoriesandmoldpowdersandotherauxil2iarymaterials.Inthecoming223years,therearefouraspectsforimprovementinthinslabcastingandrollinginChina:(1)productionofhighqualityproductsandfurtherprocessedproductsbywholelineofthinslabcasting2roll2ing,coldrollingandcoating;(2)reachingahigherproductivitylevelwithadvantagesofthingaugehotrolledprod2ucts;(3)leadingthetechnologyinnovationinthefieldofmoldmodification,dynamicsoftreduction,ferriterollingandsemi2endlessrollingetc.;(4)independentdevelopmentoftechnique,equipmentandrelevantmaterials.Itisex2pectedthatafter223years,Chinawillleadthetechnologyofthinslabcasting2rollingintheworldintermsofpro2ductivity,varietiesandquality.Keywords:thinslab;continuouscasting;continuousrolling:(19352),,,;E2mail:yuanwu@cisri.com.cn;:2006210212,,,()11.1,13,3000t/a,(13)13,,1/31,20051896t,328.9t17.3%,1567t,3399t46.1%,6649t23.6%2006129,1824.3t,20062500t,©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()()Table1Outputofthinslabcasting2rolling(hotrolledproduct)inChina104t/a19994.40.2---------4.6200038.579.2-0.1-------117.8200177.8101.54.581.2-------265.0200282.2112.2130.0162.8-------487.22003112.5153.2251.8220.955.8------794.22004163.7230.5249.8241.4192.6156.9124.7---1359.62005157.8259.8288.4238.8301.1222.8241.089.80.596.01896.02006(129)136.5207.0212.1211.0198.4174.9168.3161.242.093.636.01641.0:(1)2005,2006;(2)2ASP22006129Table2Reportofthinslabcasting2rollinginChinafromJanuarytoSeptemberin2006()/mm(12701600)858070(10701370)135(10201530)(5272)(9001600)(6570)(10001350)(5060)(9501560)(7085)()/mm(12701600)(2.311.5)(10501500)(36)(10201530)(210)(10001350)(1.212.7)(9501560)(0.812.7)2.0mm/t12524.1822758973400067234.5/t198.4193.6212.07174.94136.541.96/t86.181188.87121.945.23/(mmin-1)4.22.94.74.955/mm142413201375128711751391/mm3.944.45.773.442.544.45/13.2715.9219.212.747.778.38/min637.5820.37655.54510.52505470/218631221518(2)()/mm(9001600)(5570)(13571462)85(12101613)70(12501550)(5266)(9301530)135()/mm(9001600)(0.812.7)(9451720)(0.811.8)(12101613)(1.811.8)(12501550)(1.3511.7)(9001500)(1.811.5)2.0mm/t13734352163786371765.7518951300777/t168.27161.1920736394.41824.3/t57.373.9486.663102.1566.29/(mmin-1)63.674.25.53/mm12801389.41395.714001148/mm3.54.453.784.253.94/12.837.8417.69.715/min481.8393.1614688536.7/28162416223(2006)Table3StatisticsofthinslabcastingandrollingintheworldCSPISP(ASP)FTSR(UTSP)QSPCONROLL(ASP)TSP/t821213194611240213280123600733133187.5104313212829.52976372549083:2©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(UTSP),,,,,2004,2,31,86,,80%FTSR(UTSP)t2005300t2005t,288t4R1+F6,500t/a,1.2,,,,,,,,,,,CSP,1.6mm(Re720MPaRm770MPa)X522X601ZJ550L,5.5m,Ti,Ti,2550MPaTi,,30MPa,25MPa,,,280300MPa,CSP,200430%200575%,20060120915.0mmZJ550L[1]Fig.1MicrocosmicstructureofZJ550Llowcarbonhighstrengthsteelinlengthdirection(stripthickness5.0mm)2Ti(1.6mm)[2]Fig.2CoilsmechanicalpropertiesofTimicro2alloystripofanti2atmosphere2erosionhighstrengthsteelproducedbyZhujiangSteel3©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,80%,)2006,41%,1231%1/3,CSP,269m(7)0.78mmCSP,1.0mm0.8mm,,,,,,20052mm47.6%,0.780.97mm200601209,122mm129.9t7.1%,5318%,16%13%,,,,,,,,,(),,,TSCR,320nm4TiTiCTi4C2S2,20nmTiC,,,,,,1.33HSLCZJ330(a)(b)[3]Fig.3Highrevolvingpowerstriapicturecarbonprecipitateslessthan20nmobservedinZJ330electro2analysispowderofHSLCsteel(a),energyspectraunderelectronmicroscope(b)4©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[4]Fig.4ParticlesofTiCandTi4C2S2inTimicro2alloysteel,,,2005,FTSR(UTSP),,,(12h),5,,,,,,,,,2,,,2.1,,82005,,(a);(b):1500mm90mm;:5.0m/min;:150mm5[5]Fig.5SteeltemperaturedistributioninthemouldusingSENwitholdstyleandrenovatedone5©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(FTSR),2.3,,,,LF,,,LF,,2,LF,,RH(),,,2222,,,,,,,,,,,310,,,23,,,,23,3.12222,,,(),,,,,,,,,,,()6©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,22,ISP(ASP)65mm1.5mm60%,120t/a50%,200t/a(,50mm);,,,,,,,3.3,,,,,,3.4:(1)22;,(2)2222,(3)22222;,(4)222mm;,(5)RH2222,,,RH,(6),,,,,,:[1].CSP[D].:.2006.[2],,,.Ti[J].,2006,41():3432350.[3],,,.[J].,2005,17(8):81284.[4],,.Ti[J].,2005,17(8):85290.[5].[A].[C].2005.1562165.7©199