上海交通大学硕士学位论文涂层刀具切削性能评价及其实验研究姓名

上海交通大学硕士学位论文涂层刀具切削性能评价及其实验研究姓名：薛锴申请学位级别：硕士专业：航空宇航制造工程指导教师：陈明;许辉20080201IPVDCVD1.PVDAlTiNAlTiNAlTiN+Si3N42.PVDAlTiNWC/CAlTiN(Al:N=2:1)Al2O33.II4.CVD5.AbstractIIICUTTINGPERFORMANCEAPPRAISEMENTANDEXPERIMENTSTUDYOFCOATINGTOOLSABSTRACTCoatingtechnologyhasbeenusedwidelyincuttingtools,coatingswithexcellentpropertiescouldsignificantlyimprovethesurfacepropertiesoftools,likethehightemperaturehardness,heatinsulationproperty,thermalstability,impacttoughnessandsoon,thusthecuttingspeedandtoollifecouldbeenimprovedobviously.Becauseofmoreandmorenovelcoatingsandnewstructureswereusedincuttingtools,thecuttingperformanceappraisementofthesenewtoolswasnecessary.Determinationoftheapplicabilityandrecommendedcuttingparametersofnewtoolswouldshortendevelopmentperiod,cutcostofresearch,andincreasetechnicalvalueofproducts.Cuttingprocesswascomplicatedforitscharactersofhightemperature,largestrain,highstrainrate,highfrequencyvibration,high-speedfrictionandmaterialsfailure.Alotoffactorsinfluencedthecuttingprocess,likethekineticfeatureofmachinetools,machiningmethods,workmaterial,toolmaterial,cuttingtoolgeometryandsoon.Inthisthesis,aseriesofcuttingexperimentshadbeencompleted,concernedoftwokindsoftypicalcoatingprocessPVDandCVDcoating,threekindsofmachiningmethodmilling,drillingandturning,andtwokindsofdifficult-to-cutmaterialwheelsteelandhardeneddiesteel.Throughtheseexperiments,cuttingforce,cuttingtemperature,cuttingvibration,machinedsurfacequalityandchipformationwereresearched.Basedontheanalysisofexperimentaldata,thethesishadobtainedtheseconclusions:1.ThePVDcoatingAlTiNhadgoodperformanceindrymillinghardeneddiesteel.AmongthreeAlTiNcoatingswithdifferentcompositionandstructures,nano-compositedphasecoatingAlTiNwasthebestone.EndAbstractIVmillswiththiscoatingweresuitableforfinishmachiningofdiesteel.2.ThePVDself-lubricatingcoatingAlTiNWC/Chadperfectperformanceindrillinghardeneddiesteel,drillswiththiscompositedcoatinghadlowercuttingforceandmildwear.AlTiNaluminum-richcoatingwasalsosuitablefordrillingdiesteel,becauseoftheoxidationanddiffusionoccurredinhightemperatureatmosphere,astableanddenseAl2O3filmformed,andwouldpreventtheoxidationactiongoingfurther,thisfilmimprovedhightemperaturehardness,heatinsulationpropertyandthermalstabilityofcoating.3.Chiseledgeofdrillsinfluencedchipformationandchipremovalsignificantly,optimizationdesignofdrillscouldimprovechipremovalindrilling.4.RoundedgeCVDcompositedcoatinginsertwassuitableforheavydutyroughturning,andledtohighermaterialremovalrateandbetterchipbreaking;linearedgeinsertwassuitableforfinishturning,andledtobettersurfacequalitybuttoughchips.5.Cuttingspeedinfluencedchipdeformationsignificantly,lowerspeedledtosteadystatechips,andhigherspeedledtosaw-toothchips.KEYWORDS:CoatingTools,Diesteel,Wheelsteel,Cuttingparameters,Toolwear,Chipdeformation20082120082120082111.120023615134.5%198050%200290%[1]1/51/41/251/261/2026%49%38%48.5%[2]AMTAdvancedManufacturingTechnology30%40%12500[3]()21.21.2.1[4][5]1-1“”21[6][7][8][9]1-1[5]Table1-1Applicationofhigh-speedcuttingHighSpeedMachiningHSMHighSpeedCuttingHSCCarl.J.Salomon19241931[10]Salomon“”Valleyofdeath[11-12]3[4]:(1931-1971)(1972-1978)(1979-1989)(1990-)[13-14]10[10][15][16][17-19][20]Salomon“”[21]1.2.2(Drycutting)20901-1.Fig.1-1Cuttingtemperatureofhigh-speedcutting416cm3/min149cm3/minM4×0.7700050000[22]200m/min250%[23]200m/min,200420%(PCD)(PCBN)[24-25],[26]1.2.35(54HRC)[27](1/4)“”PCBNPCBN(=-5°)PCBN1.31.3.1[28-29]6GuehringRTS[30]--Kennametal[31]CIMT'2001,Gun-ther40%Emuge,OctacotSandvikRMF(PRPMPF,MRMMMF,KRKMKF)Iscar“”[32]1.3.2(HSS)WMoCrV[33](1215μm)[34]()1)20%W18Gr4V[35]2)(23μm)(6770HRC)(2.733.34GPa4454GPa)(6007M223HRC)35[36](WC,TiC,)510(10.5μm)(0.5μm)Co4.3GPa[37]0.05%5%GdPrYG6RYG8RYG11CRYW1RYW2RYT5RYT14RYT15RYS25RR[29](Al2O3)(Si3N4)FD03Al2O3/TiC(AT6)6.38Al2O3/ZrO288.2K10(YG6)78.3(CBN)1~21/1059GE1957(CBN)(CBN)NiFe()1.4(TiAlNTiCTiNAl2O3)[38]80%,CNC90%1.4.19[38]TiNTiCN(Ti,Al)NAl2O3CrNC3N4ZrN[39-42]MoS2WS2WC/C[43]1-11-2Table1-2PerformancesofsomehardcoatingsandsoftcoatingsμmHV0.0545TiN1-52100-2600450-600=0.4TiCN1-52800-3200350-4000.25-0.4TiAlN1-52600-3000700-9000.3-0.4TiAlCrYN1-52600-3000=9000.3-0.4WS21-4=1100=300=0.2MoS20.2-0.5=0.2TiNTiN50%70%90%TiN500[44]TiCNTiNCTiCN50TiNTiAlN[45]TiNTiNTiN/TiCN[46](Ti,Al)NTiN3-4[47](Ti,Al)N-10[41,48](Ti,Al)NTiNTiCNTiAlN/Al2O3PVD4000HV400[4](Ti,Al)N(Ti,Al)NC(Si)CrOAlCrNTiAlN10001-2400m/min[49](Al2O3)Al2O3TiCTiN[50]50GPa600900[44]CBN1000CBNCBNSi-Al[26,44]1-2AlCrNFig.1-2RedhardnessandantioxidationpropertycurveofAlCrN11(CNX)(CNX)-C3N4TiN/NbNTiN/VN5200kgf/mm25600kgf/mm2CrCCrNHf(ZrTiTa)Hf(ZrTiAlBe)[38,51]CrC(0.10.15)CrCCrNMoS2WS2WC/CTaS2/MoMOVICMolyGlideHV0.0520500.20.5μmMolyGlide0.050.10TiN1/4[52][53]TiAlN-MoS2/TiAlNTiAlN-MoS2/TiAlNFox[54-55]MoS2/Ti/CrCMoS2/TiAISI30412mm4mm25mmMoS2/TiTiCNTiCNYourongLiu[56]MoS2MoS212MoS21.4.2[57-58]PVD[59]PVDTiNTiCN+1-3TiN/Al2O3/TiCN/TiNTiAlCNTiAlCrNCBC21-3Fig.1-3SectionofcompositecoatingTiNAl2O3TiCNTiN13AlN+TiNTiAlN+TiN()40GPa(nc-Ti1-xAlxN)/(a-Si3N4)TiAlNSi3N4(1-4)TiAlN10nm50GPa900110030GPa1.4.3(ChemicalVaporDeposition,C