本文選題：油霧潤滑 + 油氣潤滑　； 參考：《南京航空航天大學》2013年博士論文

【摘要】：直升機減速器潤滑系統(tǒng)出現(xiàn)故障,齒輪軸承將處于無潤滑油工作狀態(tài),使減速器在短時間內(nèi)破壞,造成災難性的后果。為此,許多國家均對直升機有30?60 min不等的干運轉(zhuǎn)能力要求。油霧潤滑和油氣潤滑耗油量少,能減輕直升機的質(zhì)量。由于壓縮空氣能很好地散熱,故潤滑效果好。目前,極壓抗磨劑的研究僅局限于浸油等充分潤滑情況,油霧潤滑和油氣潤滑的抗磨劑研究一直未得到關注。本文采用油霧潤滑和油氣潤滑方式,對齒輪油的多種極壓抗磨添加劑硫磷酸復酯胺鹽(T307)、硫化異丁烯(T321)、二烷基二硫代磷酸鋅(ZDDP,T202)和磷酸復酯銨鹽(T391)進行摩擦學試驗,以尋找抗磨性能最好的添加劑和最好的微量潤滑方式。為降低試驗成本,以銷盤摩擦磨損試驗代替齒輪傳動。上、下試樣均是12Cr2Ni4A航空鋼。上試樣是Ф10mm×4mm的小圓柱、下試樣是Ф98mm×4mm的圓盤。上、下試樣的表面熱處理為:滲碳深度為0.8-1.0mm、表面硬度不低于HRC60。用UMT-Ⅱ試驗機做銷盤摩擦試驗,載荷是100N。上、下試樣線接觸,上、下試樣的相對滑動速度是2.62m/s。油霧潤滑裝置所用氣壓是0.1MPa、油氣潤滑裝置所用氣壓是0.4MPa。摩擦試驗過程中,摩擦系數(shù)急劇升高,就在試樣摩擦區(qū)域的入口中心處噴一次油霧或油氣,每次試驗的時間是45分鐘。研究結果顯示:(1)極壓抗磨劑對不同航空油有不同的適應性。如:2%的T307、T321、T202、T391添加劑分別加入到926和DOD-L-85734航空油中做12Cr2Ni4A鋼摩擦副45min油霧潤滑試驗,結果顯示抗磨效果最好的是2%T202加入到926航空油和2%T391加入到DOD-L-85734航空油。(2)含極壓抗磨劑的油氣潤滑的抗磨效果明顯優(yōu)于相應油霧潤滑的抗磨效果:用油量少、磨損量少且溫升低。(3)每種極壓抗磨劑均有最佳的抗磨含量。對DOD-L-85734航空油來說,T202和T391的最佳抗磨含量均為2%,而T307和T321的最佳抗磨含量均為1%。四種最佳的抗磨含量均比基礎油表現(xiàn)出極好的抗磨效果,抗磨效果最好的是2%T391。含極壓抗磨劑的油氣潤滑對提高直升機傳動系統(tǒng)干運轉(zhuǎn)能力是一條可行途徑。如進一步研究,需對直升機減速器嚙合齒輪進行含極壓抗磨劑的油氣潤滑試驗。
[Abstract]:If the lubrication system of the helicopter reducer fails, the gear bearing will be in the condition of no lubricating oil, and the reducer will be destroyed in a short period of time, resulting in disastrous consequences. For this reason, many countries have 30 or 60 min dry capacity requirements for helicopters. Oil mist lubrication and oil-gas lubrication less fuel consumption, can reduce the quality of helicopters. Because compressed air can dissipate heat very well, so the lubricating effect is good. At present, the research of extreme pressure antiwear agent is limited to the condition of sufficient lubrication, such as soaking oil, etc. The research on antiwear agent of oil mist lubrication and oil gas lubrication has not been paid attention to all the time. In this paper, the tribological tests of various extreme pressure antiwear additives, thiophosphate compound amine salt (T307), isobutene sulphide (T321N), zinc dialkyl dithiophosphate (ZDDPX) T202) and ammonium phosphate compound (T391), were carried out in gear oil by oil mist lubrication and oil / gas lubrication. In order to find the best antiwear additive and the best trace lubrication. In order to reduce the test cost, the friction and wear test of pin disk is used to replace the gear drive. The upper and lower specimens are all 12Cr2Ni4A aeronautical steels. The upper specimen is a small cylinder of 10mm 脳 4mm, and the lower sample is a disk of 98mm 脳 4mm. The surface heat treatment of the upper and lower samples is as follows: the Carburizing depth is 0.8-1.0mm, and the surface hardness is not lower than that of HRC60. Using UMT- 鈪，

本文編號：1955688