特薄壁高頻焊管機(jī)組焊接工藝及質(zhì)量控制技術(shù)研究.pdf

1、西安石油大學(xué)碩士學(xué)位論文特薄壁高頻焊管機(jī)組焊接工藝及質(zhì)量控制技術(shù)研究姓名：賀繼有申請學(xué)位級別：碩士專業(yè)：材料加工工程指導(dǎo)教師：周好斌李志強(qiáng)20090520Subject：StudyonweldingProcessandqualitycontroltechnologyofthemillusedtoweldextrathinwalledtubewithhighfrequencyweldingExtraity：MaterialProcessi

2、ngEngineeringName：HeJiYou(signature)Instructor：ZhouHaoBin(siABSTRACT，p，、Nonferrousmetals(heremainlyreferstoaluminumandaluminumalloy，copperandcopperalloy)thinwalledtubesiswidelyusedinequipmentswithcombustionengine。powered

3、astheheatexchangersofmotorvehicles，airconditionermotorcycle，engineeringmachinery，shipsandSOon(forexample，radiators，heaters，cooler，evaporator，condenseroilcooler)，asallindispensablecomponentsofheatexchangers，itsperformance

4、directlyaffectstheperformanceoftheheatexchangers，butalsoinfluencestheperformanceofthemainengineoneofthemostimportantfactorsthataffectstheservicelifeofaluminumradiatorsistheweldingqualityofextrathinwalledcomplexaluminumtu

5、bes，oncethetubesleaked，theradiator、)~的uldbefailure，InordertoensuretheservicelifeoftheradiatorusedincartheweldingprocessandqualitycontroltechnologyoftheextrathinwalledcomplexaluminumpipeisparticularlyimportantComparedwith

6、thetraditionalweldingtechnologies，highfrequencyweldingtechnologyhasanimportantpositionintheferrousmetalsindustrybecauseitshigh—efficiencyhighqualitylowcostandotherfeatures，andgraduallywidespreadinthenonferrousindustryand

7、heatexchangerindustryinthispaperbasiconthemechanismofthehighfrequencyinductionwelding，thehighfrequencyweldingtechnologyandqualityofextrathin’walledcomplexaluminumtubesusedinautoradiatorarestudiedthoroughlyunderthehelptha

8、tfromthehighfrequencyinductionweldingtheoryofferrousmetals，throughthestudyonhowthemainfactorssuchastheVee，theedgesofmaterialtobewelded，squeezing，weldpressure，weldingcoils，frequencyofcurrent，powerofinput，andweldingprocess

9、parametersaffecttheweldingquality，thepapergavethebestweldingparametersofthethinwalledcomplexaluminumtubesinhighfrequencyinductionwelding，aswellastechnicalparameters，thegapsbetweenformingrollersandthemethodhowtoselectweld

10、coils；besides，italsocertainedthekindofthewelddefectsandthereasonscausedweldqualityproblems，andthroughtheresearchonthemethodsofhighfrequencyinductionweldingtechnologyofextrathin‘walledcomplexaluminumrobes，atlast，givethema