陶瓷刀具表面微织构的激光加工工艺基础及刀具磨损机理研究

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1、万方数据ABSTRACTThekeyissueistherapidwearofceramictoolthatrestrictshigh—speedmachiningdifficult-to-machinematerialssuchashardenedsteel，highcapabilitymicro—texturedsurfacehasgrindingwithgoodperformance，thistechniqueappliedtothesurfaceofceramictoolwillgreatlyi

2、mprovetheceramiccuttingtools．Therefore，thispaperaimsattheinfluenceoflaserparametersonthemicro—texturedsurfacepreparationofceramictoolandtheinfluenceofdifferentparametersofsurfacemicro—texturedonthecuttingcapabilityofceramictoolthesetwocoreissuestOcarryou

3、tresearch，detailsareasfoIlows(1)UsingANSYSforthesimulationstudyof355nmUVlaserprocessingceramictoolprocess，underdifferentlaserenergydensityandscanspeed，Analyzingtheinfluenceof355nmUVlaseronceramicmaterialtoolremoval，andcomparingtheresultsofexperimentalstu

4、dies，whileprovidinganappropriatechoiceofparametersfortheexperiments．(2)Experimentalstudieswithsingle-factor,analyzingtheeffectofdifferentlaserparametersonthemicro—textureprepared，theresultsshow：intheprocessof355nmUVlasermachiningmicrostructureonthecerami

5、ctoolsurface，Withtheincreaseofthelaserenergydensity,thewidthofmicrochannelincreasesgradually，eventuallytendsto25pm，thedepthofmicrochannelalsolinearlyincreases；Withtheincreaseofthescanningspeedofthelaser，thewidthofmicrochannelissubstantiallyconstant，thede

6、pthofthemicrochannelgraduallydecreases；Withtheincreaseofthenumberoflaserscanning，microchannelwidthfluctuations，theoveralltrendshowedagradualdecrease，microchanneldepthlinearlyincreases；Whenthefrequencyisbetween10kHz～30kHz，asthefrequencyincreases，thewidtho

7、fmicrochanneldecreases，thedepthofthemicrochannelgraduallyincreases．Whenthefrequencyisbetween30kHz～40kHz，thewidthanddepthofthemicrochannelrapidlydecreasesasfrequencyisincreasing．Whenthefrequencyisbetween40kHz-50kHz，thewidthanddepthofthemicrochannelgradual

8、lyincreasesasfrequencyincreases．Finally，selectingreasonablylaserprocessingllI万方数据广东工业大学硕士学住论文parametersofpreparationceramictoolmicro—texturedsurface(3)UsingtheABAQUSfiniteelementsimulationsoftwareforthesimulationstudyofcer