强迫宽展孔型在热轧窄带钢中的应用

(,063300):650,,:;;:TG332:B:1006-5008(2005)01-0044-02APPLICATIONOFINDUCEDSPREADPASSINHOT-ROLLEDNARROWSTRIPXIAORui-ping(No.4SteelRollingMill,TangshanGuofengIronandSteelCo.,Ltd.,Tangshan,Hebei,063300)Abstract:Itisintroducedthatwithutilizationofinducedspreadpassthelarge-sizenarrowstripissuccessfullyrolledwithsmallbillet,thedistinguishedeconomicandsocialprofitgot.KeyWords:inducedspreadpassdesign;hot-rollednarrowstrip;rollingmill1650,200355mm,650mm2,,,800,,,,,,650mm2,,,,9919%,9913%,,2211150mm150mm165mm220mm150mm280mm273mm,,165mm220mm,150mm150mm,,,;150mm280mm,,,,165mm220mm355mm,150mm280mm212650mm:650mm2550mm1500mm1550mm1480mm1480mm1480mm1480mm1480mm1,650mm2,,2228mm,,,273mm,295301mm;355mm,377383mm,4414520051HEBEIMETALLURGYTotal1452005,Number1:2004-09-2420mm,202mm242mm255mm,1115113,,,1122,N=lg/lgm(1)=F-Fnm=1122,F0,Fn,N650mm2(1),650mm2,,7,61213273mm355mm,75100mm,,35mm,:(1),,,,,,,1=016018=0181101,=016018,=018110(2),22(3),33,,,,,,,,,,,214273mm,80mm,650mm2,145mm,016,87mm,,,,,,44273mm355mm,100mm,130mm,018,96mm,,,,55355mm(28))5420051,111()400MPa,73()365400MPa,,9()335364MPa,,22()3(),143,22HRB3352,,,500160%0180%630150%0159%,300140%0149%,,,,,,,[2]GB1499-1998HRB335,0125%0180%1160%,,0117%0140%1120%,,HRB335:0120%0122%,,1120%0140%,,,,5,600t50tR10m55,HRB335,:[1].[M].:,2000,1-10.[2],,.[M].:,1981,314.(45)320024273mm355mm,,,900t,9919%,9913%,,,,,,,20038000,200482145HEBEIYEJIN