斜辊钢管矫正机矫正时管轴反弯曲线的研究

,,,AbstractApplyingplastoelastictheory,theauthorsmakeanalysisandquantita2tivecalculatioeofthevariedcurvatureofthebendingstraighteningprocessforsteelpipe.Basedontheanalysis,themethodofdeterminingcurvatureoftheinversedbend2ingcurveoftheaxisofthestraightenedpipeisputforward,withwhichstraighteningqualityisguaranteedinthefirstplace.Descriptorsstraightenerforpipe,plastoelastic,rollprofile,inversedbendingcurve122222,,,,,,,,,,,,,[2],;[3],,[4],,,,,,:,,,(114002),[5]35%,Cd=115,[6]Cd=215,,,,,,,,,,2,,,,,,(,),,,,,441998No14211,Rr,,1121111(rRtR)M=Mt11-A44P56-F23(1-F2)12+arcisnF2F-A4FM=11-A44P56-F23(1-F2)12+arcisnF2F-A4F(1)AA=rRRtFF=RtRMtMt=P4R3(1-A4)RsMM=MMt21112(0Rtr)M=Mt4P(1-A4)56-F23(1-F2)12+arcisnF2F-56A2-F23(A2-F2)12-arcsin(FöA)2FA4M=4P(1-A4)56-F23(1-F2)12-56A2-F23(A2-F2)12+arcisnF-A4arcsin(FöA)2F(2)F0,Mmax=1171-A31-A4212MF2a015,016,017,018,019M-F2M-F21322222,13,2(),2,,1,3,3MdLdLtLepL2541998No14214:Ls=L-Ld2,MdLs=MtLtLt=MtMdLs=LsMdLep=L-2Lt=L-2LsMd=L-L-LdMdS=2PRtgA0,,,i=2LepS215Cd,[1],F=RrR=RsERCd=CtCd=1Cd,(1)(2)Md,(3)i(:)k,L(k)=Lt+k3sö2,L(k)[Lt,Ls],,M(k)=L(k)öL(t);L(k)[Ls,Ls+Ld],,M(k)=Md;L(k)[Ls+Ld,L-Lt],,M(k)=(L-Lt)öLt,M(k),F,:M(r)M(k)1,Fi+1=2arcsinFi-PA4PM(k)(1-A4)-456-F2i3(1-F2i)12MmaxM(k)M(r),Fi+1=12arcsinFi-A4arcsinFiAPM(k)(1-A4)4-56-F2i3(1-F2i)12+56A4-F2i3(A2-F2i)12M(r)Rt=r[1]P50(:,Ct,Ct=MtöEI),i,Cd,,Cd,r,R,E,Rt,A0CoCdMd,Lep,S,ik=1toiL(k),M(k),FCw(k)Ce(k)M(k)Cf(k)=M(k)Cc(k)=Cw(k)-Cf(k)Co(k+1)=Cc(k)k=iYNk=k+1Cc(i)?YNCdend4322222168,50168,L=1640mm,Ld=260mm,R=25mm,r=20mm,Co=50m-1,Ct=641998No1411555E-4ömm,215725,1m-1,0105145,Co=215725Co=-215725CWCoCeCfCcCWCoCeCfCc1110663215725316388113819013156110663215725010000010000-2157252111990013156018834111990013156111990215725317715113834-0118443113924013156117080112977-010947113924011844112080111650-01227441158000109471167471129300128701158000122741180741130990127015115800012870118670113162-012638115800012701118501113145-01266561158000126381184381131390126611158000126551184551131400126607115800012661118461113141-012659115800012660118460113141-01265981158000126591184591131410126591158000126591184591131410126599115800012659118459113141-012659115800012659118459113141-01265910115071012659117730113060012012115071012659117730113060-01201211112734012012114746112567-010167112734012012114746112567-01016712111151010167111318111167-0100165111151010167111318111167-0100165131102240100165110207110214-9172E-41102240100165110207110214-9172E-4R=800MPa,A0=28,Cd=1158,(:),:(2k-1),2k(k=1,2,i,i),,,1,,,,,,,4(1),()(2)Cd:,Cd1,Cdmin=1,2,Mmax=113116(a=015019),,Cfmax=113116CdCfmax,,;CdCfmax,Cd=2Cfmax3,,CcCd-Cfmax,,Cdmax=3Cd[1,3],,1121158119,55,Cd=112,,;Cd=1158Cd=119,,,Cd=119,Cc0155;Cd=1158,Cc0127(6),Cd,,,Cd,,,,Cd,,Cd=1158,[5]115,(3)Ld:,,,,741998No14,S,LdSS5Cci,Ld;,;,5(1)6Co=215725Cci,,,,(2),,(3)11,:,1994121,,1989,24(5):35391311,1996,19(5):45474A1M111,:,197915MunekatsuFukugen111,198516RalfFangmeier.GrundlagenfuõõrdasRichtenvonFlachmaterialProfilenRundstaõõbenundRohren.ArchEisenhuõõttenwes.55(1984)Nr.6juni.(:1998201224)841998No14