材料制备机械设计理论中的新趋势和新问题------英文翻译.docx

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1、英文原文NewTrendsandProblemsinMaterialProcessingMachineDesignTheoryAbstract:Basedonreviewingthehistoricalbackground,prospectingforthedevelopmenttrend,analyzingthecomplicacyandmechanismandsummingupsomeachievementsandexperiencesinscientificresearch,severalnewproblemsandthepossibledirectionofdevelopmentinm

2、aterialprocessingtechnologyandmachineareproposed,suchas,producingnewconceptmaterialspossessingsomespecificandextraovdinarypropertiesbymeansofintegratingandcoalescingConelativefrontierscienceandtechnology;andthereafterabriefdiscussionisgiven.Keywords:interface;extraordinaryphysicalfield;processionmac

3、hine;functionmaterial1 TheTimeBackgroundofMaterialProcessingMachineInthelongspanofhistoryofhumanprogress,manytools,machinesandmethodswerecreatedandavarietyofmaterialswithdifferentpropertieswereprocessed.Materialsanditsprocessinghavebecomeoneofpillaranddrivingforceofmankindprogress.Inpacewithmulti-po

4、larcompetitionincurrentworldandpeople,sstrivingperseveringlyforhappierlife,materialfunctiongoesbeyondunceasinglymen,sknowledgeandimagination,forexample,crypticfunctionmaterial,semiconductormaterial,energymaterial,vibration-absorptivematerial,super-strengthaluminumalloyaccountingfor70percentofapplica

5、tionofaeronauticsandspace,metalfoilof454m,deepdrawingplatewithanisotropybelow1percent,electronicaluminumfoilwithmicro-orientationupto95percent,heatresistingaluminumalloywithsuperstrongspecificstrengthusedinaeronautics,spaceanddeepsea,etc.(1,2Thusseveralimportantdevelopmenttrendswithdistincttimefeatu

6、resinmaterialprocessingdomainareshapedupasfollows:(1) Creatingmaterialprocessingmachinewithextraordinaryphysicalfieldforprocessingmaterialwithspecialtexturestructuresandfunctions.Forexample,applicationsofthermalenergyandmechanicalenergyarebreakingthroughunceasinglytechnologylimit,andsomenon-traditio

7、nenergy,suchasmicrowave,chemicalenergy,bioenergy,etc.,areintroducedintomaterialprocessingprocedureoneafteranother,sothatsomematerialprocessingmachineswithextraordinaryenergycircumstanceareproduced.(2) Breakingthroughtraditionalphysicallimitsandintegratingmelting,solidifying,plasticdeformationandheat

8、treatmenttoobtainspecialfunctionofmaterialandcutdownexpenses131.Forexample,near-netshapingmaterialprocessingtechnology,suchasfastrolling,sprayingdeposition,over-plasticmolding,injectionmolding,highenergybeam,etc,isapplied.(3) Materialprocessingprocessisforgedaheadinthedirectionofhighspeed,heavy-duty

9、andhighaccuracyonlinecontrol,fbrinstance,therollingspeedgoesupto130ms-1,thedeformationpressurerisesupto300MPa,accuracyofdimensionupto0.1m,accuracyofshapeupto0.1I,strengthaccuracycomesupto0.1MPa.Forthesereasons,itisnecessaryformaterialprocessingmachinedesigntheorytointegrateandcoalesceingeniouslycorr

10、elativefrontierscienceandtechnologytocreateandproducesomenewconceptmaterialprocessingmachinewithfollowingfunctions.2 DueFunctionsofNewConceptMaterialProcessingMachine(1) Tohavetheabilitytoproduceandbearextraordinaryphysicalfieldandtransmitextraordinaryenergyflowwiththeaimofprovidingextraordinaryphys

11、icalcircumstancesnecessaryfornewconceptmaterialprocessing.Forexample,highgradienttemperaturefieldwiththespeedofcool-downofworkinterfacewhichexceeds104106K-s1,linewaveandpulsecomplexexertedinsolidifying-deformingarea,super-strengthcontactstressfieldofmaterialforminginterface,turbulentflowfieldofmolte

12、nmetalwithverybigflakinessratio,lowfrequencymagneticfieldwithrandomfrequency,microwavefieldforpowdermetalheating,ultrasonicfieldforlargevolumesolidifying,etc.,areapplied.(2) Tohavetheabilitytoworkincriticalstatesothathighstabilityandidealperformanceofprocessingmachineisensuredunderthecircumstanceofr

13、einforcedtechnologicalconditionandmulti-fieldcouplingoperation.Forexample,chattersuppressingcapabilityoffastultra-thinrollingundertheconditionofboundarylubricatingstatef51,thecapabilityofself-excitedvibrationsuppressingundertheconditionofspecialfrictionstate,synergismstabilityanddisturbancestability

14、offlexibleconnectingparallelshaftwithmulti-drivingsystem,etc.141,areensured.(3) Tohavetheabilitytoaccuratelycontrolthematerialprocessinginordertoobtainlowloss,highefficiencyandhighqualityofmaterialprocessing.Forexample,super-highaccuracyon-linemonitorofproductsform,on-linemonitorandon-lineadjustment

15、ofproductstextureandproperties,precisioncoordinationcontrolofmulti-procedure,on-linemonitorofmicro-orientationofmetalplasticdeformation,etc.41,areensured.Someproductsaccuracyindexmaybeenumeratedasfollows:dimensionalaccuracycomingto0.1m,microstructureuniformitytocrystallattice,strengtherrorto0.1MPa,e

16、tc.H】Inshort,onlybynewconceptmaterialprocessingmachinewithextraordinaryfunctionbeingdesignedandmade,canspecialfunctionmaterialbeprocessed.3 ScienceProblemsandStudyContentsofMetalMaterialProcessingMachineUndertheCircumstanceofExtraordinaryPhysicalFieldInviewofthesefactsandbackgroundmentionedabove,severalnewresearchtopicscanbeadvancedasfollows.3.1 CouplingHeatTransferMechanismofMulti-PhaseInterfaceTemperature-StressFieldAbrand-newmicrostructurecanbeob