颚式破碎机毕业设计翻译

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1、LinerwearinjawcrushersM.Lindqvist*,C.M.EvertssonAbstractWearinrockcrusherscausesgreatcostsintheminingandaggregatesindustry.Changeofthegeometryofthecrusherlinersisamajorreasonforthesecosts.Beingabletopredictthegeometryofaworncrusherwillhelpdesigningthecrusherlinersforimprovedperformance.Amode

2、lforpredictionofslidingwearwassuggestedbyArchardin1953.TestshavebeenconductedtodeterminethewearcoefficientinArchardsmodel.Usingasmalljawcrusher,thewearofthecrusherlinershasbeenstudiedfordifferentsettingsofthecrusher.Theexperimentshavebeencarriedoutusingquartzite,knownforbeingveryabrasive.Cru

3、shingforceshavebeenmeasured,andthemotionofthecrusherhasbeentrackedalongwiththewearonthecrusherliners.Thetestresultsshowthatthewearmechanismsaredifferentforthefixedandmovingliner.Iftherewerenorelativeslidingdistancebetweenrockandliner,Archardsmodelwouldyieldnowear.Thisisnottrueforrockcrushing

4、applicationswherewearisobservedeventhoughthereisnomacroscopicslidingbetweentherockmaterialandtheliners.Forthisreason,Archardsmodelhasbeenmodifiedtoaccountforthewearinducedbythelocalslidingofparticlesbeingcrushed.Thepredictedworngeometryissimilartotherealcrusher.Aconecrusherisamachinecommonly

5、usedintheminingandaggregatesindustry.Inaconecrusher,thegeometryofthecrushingchamberiscrucialforperformance.Theobjectiveofthiswork,wherewearwasstudiedinajawcrusher,istoimplementamodeltopredictthegeometryofawornconecrusher.1.IntroductionJawandconecrushersarecommonlyusedintheminingandaggregates

6、industry.Today,itispossibletopredicttheperformanceofaconecrusher,providedthegeometry,crushersettingsandthecharacteristicsofthematerialfedintothecrusherareknown(Evertsson,2000).Thegeometryofthecrusherwillchangebecauseofwear.Beingabletopredicttheworngeometrywillhelpoptimizingthedesignofthenewc

7、rusherforimprovedperformancethroughoutitslifetime.Currentresearchandknowledgeinthefieldofwearisveryextensive.However,muchofthisresearchisconductedfromamaterialscienceperspectiveonamicro-scopiclevel.Theobjectiveisoftentogainknowledgeinmaterialselect