本文關鍵詞：水潤滑軸承開發(fā)及關鍵技術(shù)研究　出處：《河南科技大學》2017年碩士論文　論文類型：學位論文

  更多相關文章： 水潤滑 向心球軸承 彈流潤滑 表面處理 耐磨損

【摘要】：水潤滑軸承以水為潤滑介質(zhì),在可持續(xù)發(fā)展、環(huán)保和節(jié)能等方面發(fā)展?jié)摿薮?尤其是水潤滑滑動軸承在船舶艉管、潛水泵等領域應用越來越廣泛。而水潤滑滾動軸承在新型高速電主軸、核電等工程領域亦具有潛在的應用前景。目前,針對水潤滑滾動軸承相關關鍵技術(shù)的研究鮮見報道,水潤滑軸承多為傳動系統(tǒng)關鍵重要部件,其運轉(zhuǎn)性能直接影響主機的工作狀態(tài),因此,對水潤滑軸承設計開發(fā)、潤滑特性等關鍵技術(shù)進行系統(tǒng)研究勢在必行。本課題以某水下送料機構(gòu)用支承軸承為研究對象,根據(jù)軸承的結(jié)構(gòu)特點、工況條件及使用要求,首先對水潤滑球軸承結(jié)構(gòu)進行了優(yōu)化設計及材料選定,在此基礎上,建立了水潤滑球軸承等溫橢圓接觸彈流潤滑理論分析模型。然后,通過數(shù)值計算對比分析了以水或油作為潤滑介質(zhì)時,軸承潤滑狀態(tài)的不同之處,并分析了軸承關鍵結(jié)構(gòu)參數(shù)游隙、軸承轉(zhuǎn)速及內(nèi)圈溝曲率半徑系數(shù)對水膜厚度的影響。再次,為提高水潤滑球軸承的耐腐蝕性能,制定了表面處理、去氫處理工藝方案,試驗表明,經(jīng)鈍化處理的不銹鋼套圈,其耐腐蝕性能顯著提高,同時有效防止氫脆現(xiàn)象的發(fā)生。最后,模擬使用工況,對所開發(fā)的水潤滑軸承進行了耐磨損性能臺架試驗,試驗驗證了磨損是水潤滑軸承的主要失效形式,試驗后軸承的磨損總量遠小于技術(shù)指標要求,滿足主機對水潤滑球軸承的耐磨損性能要求。通過對水潤滑軸承的設計開發(fā)及關鍵技術(shù)研究工作的開展,掌握了水潤滑軸承的設計方法,潤滑機理、表面處理等關鍵技術(shù),對滾動軸承在水潤滑領域的應用推廣,環(huán)保節(jié)能,打破國外技術(shù)壟斷等方面具有重要意義。
[Abstract]:Water lubricated bearing has great potential in sustainable development, environmental protection and energy saving, especially water lubricated sliding bearing in stern tube of ship. Submersible pumps and other fields are more and more widely used, and water lubricated rolling bearings in the new high-speed motorized spindle, nuclear power and other engineering fields also have a potential application prospects. There are few reports on the key technologies of water lubricated rolling bearings. Water lubricated bearings are the key parts of the transmission system, and their running performance directly affects the working state of the main engine. It is imperative to systematically study the key technologies such as the design and development of water lubricated bearings, lubrication characteristics and so on. In this paper, a bearing used for underwater feeding mechanism is taken as the research object, according to the structural characteristics of the bearing. Based on the optimal design and material selection of water lubricated ball bearing, the theoretical analysis model of isothermal elliptical contact elastohydrodynamic lubrication of water lubricated ball bearing is established. The difference of lubricating state of bearings with water or oil as lubricating medium is analyzed by numerical calculation, and the clearance of key structural parameters of bearings is analyzed. Thirdly, in order to improve the corrosion resistance of water lubricated ball bearings, the surface treatment and dehydrogen treatment technology were established. The test results show that the effect of bearing speed and radius coefficient of inner ring curvature on the thickness of water film. The corrosion resistance of the passivated stainless steel ring was improved significantly, and the hydrogen embrittlement phenomenon was effectively prevented. Finally, the wear resistance of the developed water-lubricated bearing was tested on the bench. The results show that wear is the main failure form of water lubricated bearing, and the total wear amount of bearing after test is much less than the requirement of technical index. Through the design and development of water lubricated bearing and the development of key technology research work, the design method and lubrication mechanism of water lubricated bearing are mastered. Surface treatment and other key technologies are of great significance to the application of rolling bearings in the field of water lubrication, environmental protection and energy saving, breaking the monopoly of foreign technology and so on.
【學位授予單位】：河南科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TH133.3

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