钢管张力减径孔型椭圆度的设计

(,067002):89mm:;;:TG33318:B:1003-9996(2001)01-0056-02ThedesignofellipticityoftensionreducepassforsteelpipeYUJun-chun(ChengdeWanliSteelPipeCo.,Ltd.,Chengde067002,China)Abstract:Thepaperintroducedtheellipticitydesignmethodoftensionreducepassof89mmweldedsteeltubeunitwhichimportedfromGermanbyChengdeWanliSteelPipeCo.,Ltd.Thedesignbasedonellipticitycalculationmethodsofthetraditionalcircularandellipsepass.Thepracticeshowsthatthedefects,suchasinnerpolygonalofthicktubeandfoldingearofthintube,areeliminated.Keywords:steelpipe;tensionreducepass;ellipticity:2000-01-12:(1966-),(),,,,,,,;,,2,199389mm,,,,1(1),1i(2)ii=1i(1-i)(1)(3)ai=iDi1+ibi=Di1+i(2),aibi,mm;Di=ai+bi,,mm;i12,,,,,:65STEELROLLING20012181Feb.2001Vol118No11©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1),;(2),;;(3),3,R=ni=41+(i-1-i)2(3)389mm,::92mm315mm40m;:1619mm118312mm(1),,11101024901077170107720104710010771801077301070110107719010774010771201077200107750107713010772101077601077140107722010627010771501077230103580107716010772401009(2)1,2321110349111001711100211062101110018111003110901111100191110041110012111002011099511100131110021110996111001411100221108171110015111002311047811100161110024110003111050911060171105521105910110001811000311068111106019110554110001211000201100051106513110602111055611000141100022110007110651511055231102581100016110002411000(3),4411105091106217110542110591011061181105431106811110601911052411067121105920110515110661311058211105061106514110572211049711064151105623110188110631611055241100032231-;2-;3-,1619mm,23,,,25mm,:[1]1[J]1,1994,29(4):24-28175181:©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.