柴油機(jī)臺架磨合過程摩擦學(xué)特性的實驗室模擬研究.pdf

1、大連海事大學(xué)碩士學(xué)位論文柴油機(jī)臺架磨合過程摩擦學(xué)特性的實驗室模擬研究姓名：喬玉鵬申請學(xué)位級別：碩士專業(yè)：輪機(jī)工程指導(dǎo)教師：關(guān)德林李冰梅20040301AbstractRunningin。asalastprocessinmanufacturingofdieselengine，playsaveryimponalltr01eandhasaremarkableefI’ectonthereliabilityandthelifetimeofadie

2、selengineSothedesignofarationalrunning—inprogramwasconsideredaskeyprocessformnninginquality。Presentlymostofmanufacturerscarryoutmostlytheirrunning—inbywayoftheexperience，whatislackofguidancebasedonsystematictheoreticalan

3、dexperimentalstudyThroughsomeexperimentsinlaboratorytheprocessofdieselengine’srunning—inhavebeensimulatedandthetribologicalcharactersofcylinder／pistonringandshaftneck／bearinghavebeenstudiedbymeansofsurfaceroughhessanalys

4、is，spectrographicanalysisandferrographicanalysisoflubricant，surfacehardnessmeasureaswellasscanningelectronicmicroscopeobservationnlereforesomeconclusionsbasedontheresearchhavebeendrawnasfclllow：Thesurfaceroughnessofcylin

5、derreducedasloadwasincreasedinacertainrangeTheappropriateloadforcylinderwagconfirmedas30MPa35MPa；Thesurfacequalityofbearingafterrunninginhasbeenbetterimprovedwhentheinitialroughnessofsha最neckwaslowerthesuitable10adforbea

6、ringisabout5MPa6MPaAtthebeginningofrunningin，thedynamictransferandrecyclingofbearingalloybetweenbearingandshaftneckaresocomplicatedthattheseCallleadtoaresultoffluctuationoffrictionpair’ssurfacequalityThefrictionspeedhasa

7、considerableeffectontherunning‘inprocessofcylinder；increasingfrictionspeedisinfavoroftherunninginofcylinderBesides，itisshownthatthespectrographicanalysisandferrographicanalysisoflubricantcanbetakenasajudgingcriterionfort

8、herunninginprocess，synthesizingofbothmethodmakestheresultmoreaccurateandreliableComparedtocommonlubricant，Kangshengoilmakesthefrictionpairtoundertakealargerloadandmorerapidfrictionspeed，asresult，toacceleraterunninginproc