摩擦化 学在线表面强化对齿轮表面强度影响的基础研究

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1、英文摘要ABSTRACTResearchersoftenfoCUSonraisingtheloadingcapacityofgearsurface．Thusthispaper,integratingmeshtheoryandin—situtrbochemicaltreatmeant，studiesanewmethod-·—---conductingthefollowingresearchworkbythetechniqueofon··linestrengthingthecomponents’surface．Tomakeitsimpler,a

2、pairofspurgearischosentobecarefullyanalyzedonitssurfaceconjugatemeshingbymeansofmeshtheory,thenamodelofequivalentmovementisbuiltup．Next，thefilmthicknessbetweenthegearsiscalculatedbyusingElasto-Hydrodynamic，anditslubricatingstateisevaluatedbyusingfilmparameter．Finally,thege

3、arpairloadingcapacityisworkedoutbasedon((GB3480-83Methodsforthecalculationofloadcapacityofinvolutecylindricalgears))．Usinginorganicborateastheanti··frictionaddictive,basedon((GBl1144··89Lubricatingfluids--Measurementofextremeprasureproperties--Timkenmethod))，wegettheOKvalu

4、eofthreegroupsoflubricationoil，amongwhich，No．3oil，thatis，ISOVG68minerallubficant+5％Na2840T+2％REnanometerpowder+1％BOA+1％T154isthehighest．222．4N．Self-designedandbuiltgearrigwithopenedpowercirculation，No．3oilischosenasthelubricationoilfortheexperirnenLancomparativeexperimenti

5、smadewithISOVG68mineral1ubricantasthe1ubricationoil．Theresultis：whenISOVG68minerallubricantusedasthelubricationoil’putin3000rpm，5．96Nm，thepitchlineofthegearsurfaceisfoundextensivelypittingandthegearsurfaceplasticallydeformed．WhenNo．3oilisused，putin3000rpm，8．59Nm，thegearsur

6、facehasanobviousplasticflow,allobviousgrooveisfoundonpitchlineofthedrivinggear(thesmallerone)，anobviousedgeisfoundonpitchlineofthedrivengear(thebiggerone)．Theoperatingsurfacesofbothdrivinggearandthedrivenoneishighinsmoothfinish，nopitting．Throughtheanalysisonthegearsurface(

7、onlybasedonthegearinexperimentwithNo．3oil)，itisfoundthat：borononthegearsurfacepermeatesthesurfaceintheprocessofconjugatemeshingandformsthemodifyinglayerstotallydifferentfromitsbasicstructureandfunction．Theroughnessofthegearsurfacereduceswhichiscausedbymuchfewertinyasperity

8、onthegearsurfaceduetorunning-in．Inaddition，microhardnessofthegearsurfacehasraisedduetOjoi