中厚板控制冷却技术

145200210JOURNALOFIRONANDSTEELRESEARCHVol.14,No.5Oct.2002:(50104004):(19772),,;:2002202201;:2002204206,,,,(,110004):,:;;;:TF125.4:A:100120963(2002)0520067206ControlledCoolingTechnologyforMediumPlateWEIShi2zheng,WANGZhao2dong,ZHAODe2wen,LIUXiang2hua,WANGGuo2dong(NortheasternUniversity,Shenyang110004,China)Abstract:Thedevelopment,actualityandsignificanceofcontrolledcoolingtechnologywereexpounded,andvariousfactors,whichaffecthomogeneouscoolingofplate,anditscontrolmethodsindetailwerealsoexpatiated.AlltheseofferedmethodsandapproachestoamelioratecontrolledcoolingsystemofmediumplateinChina.Keywords:mediumplate;controlledcooling;coolingmode;homogeneouscooling,,,,,,,,,,,11.1601432mm[1],,80,16mm[2,3]1980,1,,,,[13],,11.280761Table1TypicalacceleratedcoolinginstallationsofplatesinJapanandEuropeömöm4.815.54.719.879.84.544U265.3540194.727254.744U5351216.62.812124.7263.630U14.3,1985,()1,,,,,199590,()+,()()(),,()(),,()(),,,()2050mm()1580mm(),,;()1700mm80,,,()()()[4]22[5]:(1):,;:,,;:,,,;:,,(2),,,(3),,3:2Table2TypicalacceleratedcoolinginstallationsofplatesinChina862002142,3[6],44,,,,,,[7],,4.1,,,,,,,,,,,,,,,,,,3Table3Characteristicofseveralcoolingmodes,,,;;,,;,,,,;,;,;,,,,,,1230s-1,80s-1;,,,,,;;,,,,,30s-12,,(600MPa)ö,,,10mm,30mm(600MPa)965:104Table4Comparisonofwater-curtaincooling,laminarcoolingandvaporcoolingsystemö%50100,1010030100,,,,,,,,,,,,,,,2530m,;,,14.2++,,,,,,,(+)4.3t0,tf;L;$t1(a)(b)Fig.1Schematicofcontinuouscoolingmode(a),simultaneouscoolingmode(b)anditstemperaturedropcurve,,+;+,,,,+,,4.4,,:,;;,;,,,;07200214,,,,;,,,5,,,,,5.1,,,,,,,,,:,,;,,;,,;,;,25.2:,;,;,,:(a);(b)2Fig.2Temperaturedifferencebetweenheadandtailofplatefordifferentcontrolmodes,;,,,;,,;,5.3:;,,,,,,,:,,,,,(1.52.5),175:106,,,,:[1],.“´ÆŸ—¿Å̗ÈÓ[J].,1989,21(3):1952201.[2],.[J].,1989,75(7):86293.[3].[M].,1980.[4].[J].,2000,17(3):44247.[5].[J].,1999,11:9214.[6].[D].:,2000.[7].[J].,2000,6(1):126.FWP-14GH536FWP214,ËFWP214198611,,118GH536,606410,198641030076216067FWP214GH536,::Rb758MPa,R0.2310MPa,D30%;ASTMNo.5:Rb758MPa,R0.2310MPa,D30%;ASTMNo.4:Rb758MPa,R0.2310MPa,D30%();ASTMNo.4GH536HastelloyX,HastelloyX,HastelloyX,GH44,GH44(GH5368.28göcm3,GH448.89göcm3)GH536,GH536GH536,FWP214,1996,FWP21425,2400h,GH536FWP214,Ë,27200214