:100622777(2000)0220010202X(,338013):,,,,:;;:TG335171:BBroadeningtheAngleofEntryofthePiercingMillandIncreasingtheEfficiencyofPiercingZHOUDao2zhi(XinyuIron&SteelCo.,Ltd.,JiangxiXinyu338013,China)Abstract:Quitegoodeffectisgainedfrombroadeningtheangleofentryofthepiercingmillandnarrowingtheangleofdepartureoftheroller,bywhichtheefficiencyofpiercingisincreasedandperunitenergyconsumptionisreduced.KeyWords:theangleofentryofthepiercingmill;theangleofdeparture;efficiencyofpiercing2,16.436m1.85m19.22m3.086m,76mm90mm,,34,,,,,,,,1,,,8,,2810,,20220004JIANGXIMETALLURGYVol.20,No.2April2000X:2000202202:(1949),,,,©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[13],8,621kW;10,658kW,5.95%21000kW,,8102810,,11,,,,,,215,,;3,,,3215,,3,,1999,232811622t,46181t,7188t,20124%,,,199919985kWh,12kWh,,,4,,,,[1],.()[M].:,19891136137.[2]1[M]1:,19801398.[3]1[M]1:,198113814081()11202:©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.