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20062,2,,,(1.,710065;2.,710065):,,,,,,:;;;;:TGns.28:A:rool2206(2006)01006204,,,,:(LF)(LMA)LF,,LMA,,1Ll19,1906CMeCannRCdson(AC)[l],(1)AC,,,lllllllll}}}1tAC20,DCtll,1919R.L.SanfoW.B.KouvenhoVen[2J,(2),,,RWOeHMuner1937,,2(c),2(b)WOe70(3)(TotalFlux321:MnetieMethod)[],Magnoh,,,Rotescograph,Magnograph23,1987NDTH.R.Weisehedel,,(4)l,3J,,80NDTLMA2504,t19861996,,101995Magnographnl]1996,LFLMA,TCMA(,)90,E.Kalwa,NDT,LMA,,LMALMA,LF,1976A.Maillard1984J.L.TaylorN.F.Casey19871988()H.KuwnG.L.Burkhard1994H.Kuwn1.2,:,,,,,:,INTROS,(LMA)(20062),INTROS,,(),,UniversityOfMiningandMetalluMD,MD,MD20(822~),MD120BZawa-da30,,,,22.12060()70TGS80,[8,1],,,,,,MTC94,80,GDJY,1992GD11,,,,,,,80,GXT,,1986BecoritLMA250,GST113l4]LMALF,LMALF902.2,,MTCMTC-B[lM,,,,,,33.1,,,:3.LI(LF)1LF,321:,;,,,,3.L2,,,LMALF3.1.3,(kNm)APIRPgB(),,,,3.1.4,,,3.2(LBS),,,,,LMALF,,,,LMALF,,,,,,,:[1]WisehedelHR.Eleema,erietesting,areliablemethodfortheinspeetionOfwireropesinserviee.NDT.Intemational,1989,22(3):155161.[2]WelsehedelHR.EleetromagnetiewirereinspeetioninGermany.MaterEval,1988,46(5):734736.[3]WeisehedelHR.Methodandapparatusformagnetieinspeetion[J].UnitedStatesPatent,1987,4:659991.I4]LajltB,cellerK,uF,etal.Couterizederationaleontrolofanelectrolllaetiewireropetester.MaterEval,1995,53(9):10021006.[51,M]J:,2003.[6]MlenkoA,sukhonkovV.NondestrUctivetestingofsteel~rDPesinRussia.NonDestruetiveTestingandConditionMonitoring,1998(7):395397.[7l,,,.MD[J].,2000,(5):1518.[8],..:,1995[9],,..(A),1989,9:9931000110],,,..,1993,14(3):269273[11]GaoHB,YangSZgKC,et.Aneulnetworkbasedteehniqueforquantitativewireroveineetion.NDT&EInternation,1993,260):3133.12],..,1990(2):2933[l3],,.[J1,1994(6):3336.1,,..,1996:2225..MTCB.,2003,(7):47.:(1981),,,,:20050523liner15studiedinthisper.TIGweldingmethodwithonshieldingonthebaekofweldmetalandsuperlowearbonaustenitiestainlesssteelweldingwireTGS309Lareappliedtotheweldingproeessof20/OCr18Nigeladpipe.It5provedthattheweldedjointseanmeetthedemandsinpractiealservieethroughtheinvestigationsontheweldedjointsbymeansofoptiealmetallogralhie,SEM,EDSandelee-troehemiealanalysis.Keywords:eladpiPe;staiesssteel;weldedjoint;TIGwelding;eleetroehemiealanalysis(59)WengTechqueforSTFA26+ICr18NigHeterogeneouSSteelsLlJun(CNPCNo.6ConstruetionCoany,Guilin541004,China)Abstract:TheeharacteristieandproblemOfSA26steelandICr18NigTisteelweldingareana-lyzed.Throughtheweldingproeessrest,metallophieorsanizationanalysisandenneeringpractiee,it15ProvedthattheweldingofSTFA26andICr18NigTiheterogeneoussteels15feasibleintermsofthemeasuresinehidingGbaekingwithHICr26Ni21wire,SMAWfillingandeoveringwithA407rod,withoutpreheatingpriortoweldingandwithoutthermtreatmentafterwelding,usingweldingspeeifiea-tionsofsmalllinearenergyandstrieteontroloflayertemPeratureKeywords:refraetorysteel;staiesssteel;heterogeneoussteel;weldingteehnologyNONDESTRUCTIVETEST.(62)DeveloPmentofNondestrudiveTestirWireRoPesandItsCurrentStatusCEHui(CNPCThbularGoodsResearchCenter,Xian710065,China),WXinhu,FENGYaorong,et.Abstract:ThePaperreviewsthedeveloPmenthistoofnondestruetivetestingteehnologyforwireropesathomeandabroad,introdueestheeurrentstatusandexistingproblemsofthisteehnolo,andpointsoutitsdevelopmenttrend.Amongthosenondestruetivetestingmethodsforwireropes,theeleetro-magnetietestingmethod15reeognizedasthemosteredibleone.Keywords:reroPe;~destructivetesting;elem,letictestlng;~nistatus;develmenind(66)OPtnalSeleetionofAutomatieUtra50cTestProcessforWeldsthBothSidesSubmergedArcWelngHUANGLei(CNPCThbularGoodsResearchCenter,Xian710065,China)Absttaet:Theintemalqualityofweldswithbothsidessubmergedarcwelding15determinedmainlybyautomatieultrasonietest.Andtheveracityofthetest15assuredbytestproeess.Thispaperillus-tratestheautomatieultrasonietestnroeessinrespee*ssensorseleetion,eouPlingmodeandeo11diumseleetion,sensorloutandsensorspanseleetion,eontrastspeeimenfabrieation,testsensitivityaseertaining,seanningmode,and50forth.ItoffersarefereneetoteehniealPersonnel.Keywords:steelpipe:weld;ultrasonietest;ProeessPROJECTMANAGEMENT(70)UnbaiancedQuoteModslBasedonUnvariedExPectativeBenefitofContraetorUi~i(CollageOfhaoningPeheealUvety,Fushun1130()l,China),BAIMingAbstract:InPraetieeOfinvitibidding,thePrineiPleoflowestquotedprieeforwinner15usuallyadopted,50thateontractorhastodepressthepriee.Theunbalaneedquotemodelbasedonunvariedex-peetativebenefitofeontraetortakesaeeountoftheengineeringquantityvariationandeonstruetionse-queneeinflueneeundertheeonditionofengineeringquantitydetailedlist,andembodiesthetimevalueofeapital.Underthepreeonditionofunvariedexpeetativebenefitofeontractor,thequotedpriee15low-eredtoraisetheehaneeofwinningbiddingbymeansofadjustingunitPrieeofeaehsubprojeet.Theestablishedmode15easytouseandenablestotoptimaleomputationalsolutionasarefereneetoeon-traetor5bidding.Kwords:engineeringeontraet;unbalaneedquotedpriee;invitingandsubttingbidding:timevalueofeapital;linearprogramming7