大型儲油罐多目標控制高效自動焊接設備與工藝研究.pdf

1、天津大學碩士學位論文大型儲油罐多目標控制高效自動焊接設備與工藝研究姓名：楊國棟申請學位級別：碩士專業(yè)：材料工程指導教師：李桓梁君直20090201AbstractThedevelopmentofthehigh—effectiveautomaticweldingequipmentwithmultiobjectivecontrolfunctionforweldinglargescaleoiltankistoadapttheenergydev

2、elopmentalstrategyofourcountryThepetroleumstrategyreservoirswith150，000cubicmeterslargescaleoiltankwillbebuiltinnextseveralyears，simultaneouslytheconstructiontechnologiesforbuilding150，000cubicmeterslargescalestoragetank

3、hasbeenbroughtforwardin“EleventhFiveYearPlan’’forscientificandtechnologicalprogressofChineseNaturalPetroleumCorporation(hereinshortedasCNPC)Thereforetheresearchofthisprojectwillbeunifiedwiththeengineeringpractice，andwill

4、havegoodpracticalapplicationprospectInthisproject，themultiobjectivecontroltheorywillbeappliedforthefirsttime，thelarge—scaleoiltankautomaticmachineforweldinghorizontal，vertical，filletjointwilltakeadvantageofuniformmultiob

5、jectiveandmodularcontrolsystem，threekindofdifferentautomaticweldingmachinesabovecanusesamemaincontrolelectrichardware，thecontrolsystemupgradeveryconveniently，SOthecontrolwaywillbesimplifiedandhighpublic，theperformanceofc

6、ontrolsystemcanpromoteobviouslyandthemaintenanceonsitewillbesimplerandmoreconvenient，anditwillbeeasytealizethestriationofproductsInthisproject，thestructureofthehorizontalweldingmachineandtheweldingprocesshasbeenimprovedT

7、heautomaticsubmerged—arcprocesshasbeenusedforweldinghorizontaljoint，andthetraditionalonesideweldingprocesshasbeenchangedtotwo—sideweldingsimultaneouslythewelddregfromrootpasshasbeenturnedovertheoutsideofbackjointbymolten

8、pool，thusthesquarecornerprocedurehasbeenavoided，SOastoimprovetheweldingproductivityandassuretheweldingjointqualityThefluxcoredwireplusshieldedgascompulsionshapingprocesshasbeenappliedfortheverticaljointweld，andwaterwasto