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1、时光荏苒，岁月如白驹过隙，不经意间，我们即将从多彩的大学毕业，完成一个从大学生到社会人的转变。四年的大学生涯，让我明白了许许多多的科学知识和人生哲理，以及数不尽的感悟和成长。然只有将所学的理论知识付诸于社会的实践，才能检验和实现理论自身的价值，也只有将理论付诸于实践才能使理论得以检验。同样，一个人的价值也是通过实践活动来实现的，也只有通过实践才能锻炼人的品质，彰显人的时代风貌。而毕业实习作为大学的最后一课，也是最后一刻，我倍加珍惜，从而可以较深层次的理解社会，以便为将来能更好的胜任工作打下坚实的基础。附录A外文翻译原文：P
2、uttingCeramicTooltoRationalUse----W.C.Ye,F.Zhou,HuaiyinInstituteofIndustrialEngineeringAbstract:Ceramictoolisoneofmaincuttingtoolsforprocessingprecisely.Becauseofitsexcellentperformanceandhighratioofpropertytoprice,itisinuser’sgoodgrace.Thispaperintroducesthetypes
3、ofdomesticcuttingtoolmaterial,thechoiceofnameandthemethodsofmakingrationaluse.Keywords:Ceramictool;Durationofcutter;UseCeramictoolisoneofmaincuttingtoolsforprocessingprecisely.Owingtothehighhardnessofceramic(91-95HRA)andgoodwear-resistancethatisfourtimeshigherthan
4、thatofcementedcarbides,thedurationofceramictoolisseveraltotenstimesaslongascementedcarbidetool’s.Ceramiccanmaintainhigherhardness(80HRA)attemperaturesashighas1200Jandthereforecanbeusedatmuchhightemperatures.Inhassmallaffinity,lowfrictioncoefficient,highbondingresi
5、stance,proliferatingresistanceandlesstendencytoformabuilt-upedge,allofthesemakeitpossibletogetgoodmachinedsurfacequality,whileitspriceisfarlessthandiamondtoolsandCBNcuttingtoolswhosemachinabilityissimilartoit.Besidesofgeneralcastironsandsteels,itcanalsomachineoflo
6、wmachinabilitysteelssuchashardened-steel,highstrengthsteel,chilledironandnickel-basealloy.Inaddition,itcanalsobeusedwithturningandmillinginsteadofgrindingtopromoteproduceefficiency.However,ceramictoolhasthedisadvantagesoflowerstrengthandhigherbrittleness,soithasbe
7、enmainlyusedinpreciseprocessingforalongtime.Inallsortsofcuttingtoolmaterial,itoccupiedlessproportion.Inrecentyears,duetosuccessfulcontrolofrawmaterialpurenessandgraindimension,addingcarbideandmetal,adoptinghotpressprocess(HP)andhotisostaticprocess(HIP),notonlybend
8、ingstrengthisimprovedto0.9to1GPa(evenupto1.3to1.5GPa,equivalenttocementedcarbide’s),butalsoitsfracturetoughnessandshockresistancearequite时光荏苒，岁月如白驹过隙，不经
