QPQ鹽浴和激光沖擊復合處理技術提高鋼材性能的研究.pdf

1、江蘇大學碩士學位論文QPQ鹽浴和激光沖擊復合處理技術提高鋼材性能的研究姓名：陳衛(wèi)剛申請學位級別：碩士專業(yè)：機械制造及其自動化指導教師：張永康20071201江蘇大學碩士學位論文ABSTRACTEverykindofloaderusedintheprojectofroadandbridgeismainlyfoundintheworkofblockstonebitumensconcretenlix眥pavementandclayboundm

2、acadamLoaderworksinadverseenvironmentwhichisinopenairandfunofcorrosionBecauseof銜ctionandcorrosion，buckettoothofloaderisalwaysfailureSobuckettootharechangedeverymonthMeanwhile，therealelotsofvehiclesontheroadwhichgreatlylo

3、weredtheworkinge伍ciencyofloaderItalsohasinfluenceonconstructionprogressSotheresearchoninfluenceandeffectofprocessingtechnologyforQPQonweal“resistanceandcorrosionresistancehassignificantmeaningtoimprovingtheperformanceofl

4、oaderⅢspaperftrstlyintroducesthedevelopment，technicalcharacteristicsandappliedscopeoflasershockprocessingSecondlyitshowsprocessofQPQsaltbath骶atmemtechnologyanditspropertyofthematerialwhichwastreatedSOwecanseefindtheadvan

5、tageofitAttheendofthispaperaftertheanalysisofcompoundtreatedmaterial血croStnlcture，weannouncethemechanismoftransformationhardeningBasedoncompositionofhardenedlayerthispaperanalysesonchemicalcompoundlayerdiffusedlayeroxide

6、scaleandporouslayerbyQPQtreatmentItalsoanalysestechnologicalconditionsoflasershockedprocessMeanwhileitshowscharacteristicofhardenedlayerbylasershockedprocessEventuallyexperimentdataaregiventOdemonstrateinfluencesonwearre

7、sistanceofmaterials，corrosionresistance。fatigueresistance，andstrengthandtoughnessItalsodemonstrateseffectsondimensionsofworkpieceanditssurfaceroughness111eapplicationindicatesthatbuckettoothisimprovedbyQPQandcompoundlase

8、rtreatment111e∞treatmentsextendtheaverageworkinglifeofitfrom300hoursto400hourswhichgainnotableeconomicbenefitandintegratedbenefitKeywords：Lasershockprocessing(LSP)，QPQsalt—bathcompoundtreatmentNitriding，Wearresistance，Co