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1、附录A外文翻译原文：PuttingCeramicTooltoRationalUse——W.C.Ye,F.Zhou,HuaiyinInstituteofIndustrialEngineeringAbstract:Ceramictoolisoneofmaincuttingtoolsforprocessingprecisely.Becauseofitsexcellentperformanceandhighratioofpropertytoprice,itisinuscr^sgoodgrace.Thispaperintroducesthetypesofdo
2、mesticcuttingtoolmaterial,thechoiceofnameandthemethodsofmakingrationaluse.Keywords:Ceramictool;Durationofcutter;UseCeramictoolisoneofmaincuttingtoolsforprocessingprecisely.Owingtothehighhardnessofccramic(91-95HRA)andgoodwcar-rcsistanccthatisfourtimeshigherthanthatofcementedcar
3、bides,thedurationofceramictoolisseveraltotenstimesaslongascementedcarbidetooPs.Ceramiccanmaintainhigherhardness(80HRA)attemperaturesashighas1200Jandthereforecanbeusedatmuchhightemperatures.Inhassmallaffinity,lowfrictioncoefficient,highbondingresistance,proliferatingresistancea
4、ndlesstendencytoformabuilt-upedge,allofthesemakeitpossibletogetgoodmachinedsurfacequality,whileitspriceisfarlessthandiamondtoolsandCBNcuttingtoolswhosemachinabilityissimilartoit.Besidesofgeneralcastironsandsteels,itcanalsomachineoflowmachinabilitysteelssuchashardened-steel,hig
5、hstrengthsteel,chilledironandnickel-basealloy.Inaddition,itcanalsobeusedwithturningandmillinginsteadofgrindingtopromoteproduceefficiency・However,ceramictoolhasthedisadvantagesoflowerstrengthandhigherbrittleness^soithasbeenmainlyusedinpreciseprocessingforalongtime.Inallsortsofc
6、uttingtoolmaterial,itoccupiedlessproportion・Inrecentyears,duetosuccessfulcontrolofrawmaterialpurenessandgraindimension,addingcarbideandmetal,adoptinghotpressproccss(HP)andhotisostaticprocess(HIP),notonlybendingstrengthisimprovedto0.9to1GPa(evenupto1.3to1.5GPa,equivalenttocemen
7、tedcarbidet),butalsoitsfracturetoughnessandshockresistancearequiteimproved,soitsuserangeisexpandeddaybyday.Besidesofgeneralfinishingandsemi-finishing,itcanbeusedinroughing.Tnaddition,itisavailableinturning,millingandplanning,soceramictoolisconsideredasoneofmosthopefulcuttingto
8、olsbytheinternationalinpresentage.Nowitiswidelyusedinhundreds
