纳米氧化锆增韧氧化铝基陶瓷刀具及切削性能研究

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1、内蒙古科技大学本科生毕业论文_______________________________________________________________________________摘要:本文主要研究了纳米氧化锆增韧氧化铝基陶瓷刀具：A20Z(c+m)和A15Zc切削淬硬45#钢、淬硬T10A、灰铸铁的切削性能。在给定的条件下，低速和高速情况下，研究在切削深度分别为0.1mm、0.2mm、0.3mm、0.4mm时，A20Z(c+m)和A15Zc的切削性能，并探索最适合的切削深度。陶瓷刀具A20Z(c+m)和A15Zc在切削灰铸铁时，A15Z

2、c刀具材料在切削铸铁时比A20Z(c+m)有更好的耐磨性，随着切削深度的增大，A20Z(c+m)和A15Zc后刀面磨损量也增大。A20Z(c+m)和A15Zc切削灰铸铁时，切削速度v=84.5m/min的条件下，其后刀面磨损量受切削深度的影响不大。高速切削灰铸铁时，A20Z(c+m)的后刀面磨损量比A15Zc要大。陶瓷刀具A20Z(c+m)和A15Zc在切削淬硬T10A时，A20Z(c+m)在低速条件下切削T10A，对于进给量的改变，后刀面磨损量没有受多大影响。A15Zc在低速v=31m/min后刀面磨损量比A20Z(c+m)要大。A15Zc、

3、A20Z(c+m)在都不适合在高速下切削T10A，且只能给小的切削深度。陶瓷刀具A20Z(c+m)和A15Zc在切削淬硬45#钢时，A20Z(c+m)陶瓷刀具在低速下切削45#钢，只能在小的切削深度条件下合适切削。A15Zc的后刀面磨损量比A20Z(c+m)要小。低速下切削45#钢，A15Zc也只适合在小的切削深度下切削。关键词：纳米复合陶瓷刀具；切削性能；切削深度；磨损机理41内蒙古科技大学本科生毕业论文______________________________________________________________________

4、_________ABSTRACTThispaperhasresearchedthecuttingperformanceofnano-scaleZrO2tougheningAl2O3matrixceramicstoolmaterials,suchasA15ZcandA20Z(c+m),inmachiningthehardened45#steel,thehardenedT10AsteelandcastironHT200.Underthelowandhighspeedcondition,researchingthecuttingperformanc

5、eofA15ZcandA20Z(c+m)infourcuttingdepththat0.1mm、0.2mm、0.3mm、0.4mm.Andexploredthemostsuitablecuttingdepth.WhencuttingcastironHT200withtheceramictoolsA15ZcandA20Z(c+m),forwearresistance,theA15ZcisbetterthanA20Z(c+m).Withthecuttingdepthincreasing,thetoolwearrateonflankofA15Zcan

6、dA20Z(c+m)wouldbeincreased.WhencuttingcastironHT200undertheconditionthatcuttingspeedis84.5m/min,thetoolwearrateonflankofA15ZcandA20Z(c+m)haslittleeffectbycuttingdepth.Underhighcuttingspeedcondition,thetoolwearrateonflankofA20Z(c+m)islargerthanA15Zc.WhencuttinghardenedT10Aste

7、elwiththeceramictoolsA15ZcandA20Z(c+m),withthelowspeedcondition,thetoolwearrateonflankofA20Z(c+m)haslittleeffectbycuttingdepth.Andunderthelowspeedv=31m/mincondition,thetoolwearrateonflankofA15ZcislargerthanA20Z(c+m).CeramictoolsA15ZcandA20Z(c+m)arenotsuitableforcuttingharden

8、edT10Asteel,andjustonlittlecuttingdepth.Whencuttinghardened45#steelwiththec