本文選題：碳刷　切入點：數(shù)據(jù)處理　出處：《浙江大學》2015年碩士論文　論文類型：學位論文

【摘要】：碳刷是由銅和石墨為主要組分制成的一種銅／石墨復合材料,由于具有良好的導電性和耐磨性在諸多需要導電且耐磨的領域得到了極大的應用,結(jié)合碳刷的實際工作環(huán)境,本文研究了某一特定組分的碳刷在特定速度、水介質(zhì)和不同載荷等工作環(huán)境下的磨損特性及機理。第一,結(jié)合碳刷的結(jié)構(gòu)特點對復合材料的磨損特性做出了理論分析,描述了摩擦副接觸面的微觀接觸情況,預測了復合材料的磨損率與載荷的關(guān)系、材料的表面磨損情況和磨損機理,指出：載荷越大磨損率越大,但是兩者并非線性關(guān)系；材料的表面磨損是不均勻的,與運動形式和載荷等有關(guān)；磨損過程中存在有粘著磨損、磨粒磨損和疲勞磨損的綜合作用；第二,簡要闡述了自行研制的碳刷磨損試驗機總體方案及加載原理,針對試樣浸水后增重并膨脹的特點確定了線磨損量的測量方法,并采用自制碳刷磨損試驗機將試樣分為低載荷、中載荷和高載荷三組進行磨損試驗,分別對試樣表面五個點的線磨損量進行測量,得出試樣表面在一系列選定時刻的線磨損量；對實驗過程中可能出現(xiàn)的誤差進行分析,確定使用t檢驗準則對數(shù)據(jù)進行處理,得出線磨損量-時間、磨損率-時間、線磨損量-載荷以及表面形狀等各種變化曲線及結(jié)果；第三,綜合上述理論分析和試驗分析結(jié)果,結(jié)合具體試驗條件,并運用工具顯微鏡對多種試驗條件下的不同組分的碳刷試樣磨損后的表面進行觀察分析,首先從試驗的加載方式和試樣運動方式兩個方面對載荷的影響進行綜合分析,驗證了理論分析的結(jié)論；然后論述并驗證了磨損過程中的石墨潤滑膜的存在；最后對碳刷磨損試驗進程中不同磨損階段的磨損機理進行了總結(jié)。最后,總結(jié)了本文的研究內(nèi)容及結(jié)論,結(jié)合研究過程中出現(xiàn)的問題對后續(xù)工作進行了展望。
[Abstract]:Carbon brush is a kind of copper / graphite composite material made of copper and graphite. Because of its good electrical conductivity and wear resistance, it has been applied in many fields which need electric conduction and wear resistance, and combined with the actual working environment of carbon brush. In this paper, the wear characteristics and mechanism of a certain carbon brush under certain working conditions, such as specific velocity, water medium and different loads, are studied. Firstly, the wear characteristics of the composite are theoretically analyzed in combination with the structural characteristics of the carbon brush. The microcosmic contact of friction pair is described. The relationship between wear rate and load, surface wear and wear mechanism are predicted. It is pointed out that the greater the load is, the greater the wear rate is, but the relationship between them is not linear. The surface wear of the material is uneven, related to the form of movement and load, etc., there are adhesive wear, abrasive wear and fatigue wear in the wear process. The general scheme and loading principle of the self-developed carbon brush wear tester are briefly described. According to the characteristics of weight gain and expansion of the sample after immersion, the measuring method of the linear wear quantity is determined, and the specimen is divided into low loads by the self-made carbon brush wear tester. Three groups of moderate and high load wear tests were carried out to measure the linear wear amount of five points on the surface of the specimen, and the linear wear amount of the sample surface at a series of selected times was obtained, and the possible errors in the process of the experiment were analyzed. It is determined to use t test criterion to process the data and obtain various curves and results of line wear volume, wear rate and time, linear wear rate and load, and surface shape. Thirdly, the above theoretical analysis and experimental analysis results are synthesised. Combined with the specific test conditions and using the tool microscope to observe and analyze the worn surface of carbon brush samples with different components under various test conditions. The influence of loading mode and specimen movement on the load is analyzed synthetically, and the conclusion of theoretical analysis is verified, then the existence of graphite lubricating film in the process of wear is discussed and verified. Finally, the wear mechanism of different wear stages in the process of carbon brush wear test is summarized. Finally, the research contents and conclusions of this paper are summarized, and the future work is prospected in combination with the problems in the research process.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TH117.1

【相似文獻】

相關(guān)期刊論文 前10條

1 顏鐘得;謝致薇;;動態(tài)磨損試驗數(shù)據(jù)的數(shù)理統(tǒng)計分析[J];廣東工業(yè)大學學報;2006年04期

2 楊明忠;聶明;;微量磨損試驗儀及其實驗研究[J];武漢工學院學報;1984年01期

3 龐佑霞;朱宗銘;梁亮;劉厚才;余江成;;多種材料的沖蝕與空蝕交互磨損試驗裝置的研制及應用[J];機械科學與技術(shù);2012年01期

4 賈瑞清;夏志新;;流體污染磨損試驗方法[J];材料保護;1991年08期

5 紀衛(wèi)東,李克天;汽缸磨損試驗方案的優(yōu)化方法[J];南方鋼鐵;1997年03期

6 宮禎榮;;在液體介質(zhì)中進行橡膠磨損試驗的儀器[J];橡膠參考資料;1972年07期

7 顏鐘得;謝致薇;;靜態(tài)磨損試驗數(shù)據(jù)的數(shù)理統(tǒng)計分析[J];廣東工業(yè)大學學報;2007年01期

8 王琥;機床導軌試樣的磨損試驗[J];機床;1983年02期

9 顏鐘得;磨損試驗數(shù)據(jù)的數(shù)理統(tǒng)計處理方法[J];理化檢驗(物理分冊);1995年01期

10 沈際春,王飛,陳星;磨損試驗中的切入法數(shù)據(jù)處理[J];湖北汽車工業(yè)學院學報;1998年01期

相關(guān)會議論文 前7條

1 徐久軍;林炳鳳;嚴立;;內(nèi)孔磨損試驗方法研究[A];2006全國摩擦學學術(shù)會議論文集（三）[C];2006年

2 孫志波;;缸套—活塞環(huán)副模擬磨損試驗方法初探[A];第一屆全國青年摩擦學學術(shù)會議論文集[C];1991年

3 胡在■;薛晉東;;油性劑磨損試驗研究[A];摩擦學第三屆全國學術(shù)交流會論文集潤滑材料部分[C];1982年

4 沈際春;呂靖;;基于切入法磨損試驗的數(shù)據(jù)處理方法及應用[A];2003年11省區(qū)市機械工程學會學術(shù)會議論文集[C];2003年

5 邱海波;金元生;;重載條件下U71Mn軌鋼的磨損試驗研究[A];第五屆全國摩擦學學術(shù)會議論文集（上冊）[C];1992年

6 陳卓君;張祖立;;65Mn激光硬化表面土壤磨損試驗[A];紀念中國農(nóng)業(yè)工程學會成立30周年暨中國農(nóng)業(yè)工程學會2009年學術(shù)年會（CSAE 2009）論文集[C];2009年

7 王丹膺;趙勇;;關(guān)于在制動器臺架上進行磨損試驗的方法探討[A];第十一屆中國摩擦密封材料技術(shù)交流暨產(chǎn)品展示會論文集（摩擦卷）[C];2009年

相關(guān)碩士學位論文 前2條

1 宋曼;碳刷磨損試驗及機理研究[D];浙江大學;2015年

2 孟海洋;C/Cu復合材料磨損試驗研究[D];浙江大學;2014年

，

本文編號：1598987